Pier column mounting method and lifting device

Abstract

The invention discloses a pier stud mounting method and a lifting device, and belongs to the technical field of bridge construction engineering.The pier stud mounting method comprises the steps that the lifting device is mounted, so that the output end of the lifting device is located above a bearing platform; the pier column structure is moved to the initial position of the bearing platform; the output end of the lifting device is connected to the pier column structure, and the pier column structure is lifted by a preset distance value through the lifting device; the lifting device is driven to drive the pier column structure to move in the horizontal direction, so that the pier column structure moves to the position above the target position of the bearing platform; and the pier column structure is lowered and installed at the target position of the bearing platform through the lifting device. The lifting device is applied to the pier column mounting method. According to the pier column installation method, the problem that large machines are insufficient in occupied space due to space limitation is effectively avoided, the operability of pier column installation in the narrow space is improved, the construction difficulty is lowered, the safety risk is reduced, the construction efficiency is improved, and the project progress is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge construction engineering, and in particular to a pier column installation method and lifting device. BACKGROUND

[0002] In the current urban construction process, urban viaduct reconstruction and expansion projects are constantly advancing, showing a trend of increasing number of layers and increasingly complex three-dimensional intersections. This development trend significantly increases the difficulty of construction, with severely limited construction space being a major problem. As the scale and complexity of the project increase, the required space for large machinery in the construction site is difficult to meet.

[0003] In particular, for the case where the precast pier column is located in the middle of an existing bridge, the limited working width is insufficient. This narrow working space results in a serious lack of space for large mechanical equipment due to space constraints. Under such construction conditions, the construction space is extremely limited, and the construction unit not only has to deal with the inconvenience caused by the narrow space, but also faces higher safety risks. Conventional pier column installation methods rely on large mechanical equipment for lifting, installation, and other operations. However, in the current limited space construction environment, these methods are difficult to implement, severely affecting construction efficiency and project progress. SUMMARY

[0004] The purpose of the present application is to provide a pier column installation method and lifting device to solve the technical problem of the existing technology that the pier column installation process is not easy to operate in a narrow space due to space constraints of large mechanical equipment.

[0005] As conceived above, the technical solution adopted by the present application is:

[0006] On the one hand, the present application provides a pier column installation method, comprising:

[0007] installing a lifting device so that the output end of the lifting device is located above the pile cap;

[0008] moving the pier column structure to the initial position of the pile cap;

[0009] connecting the output end of the lifting device to the pier column structure and lifting the pier column structure by the lifting device by a preset distance value;

[0010] driving the lifting device to move the pier column structure in the horizontal direction, so that the pier column structure moves above the target position of the pile cap;

[0011] lowering and installing the pier column structure on the target position of the pile cap by the lifting device.

[0012] As a preferred embodiment, the pier column structure is provided with at least two;

[0013] After the first pier column structure is lowered and installed at the target position of the bearing platform, the lifting device moves the next pier column structure above the top of the installed pier column structure, lowers the next pier column structure, and installs it in abutment with the installed pier column structure.

[0014] As a preferred, the abutment installation of the two adjacent pier column structures comprises:

[0015] A preset connector on the top of the installed pier column structure;

[0016] The bottom of the next pier column structure is aligned and lowered to the connector, and the connector is embedded in the abutment slot of the next pier column structure.

[0017] As a preferred, after the abutment installation of the two adjacent pier column structures, the outer periphery of the connection between the two pier column structures is fixed by a hoop.

[0018] As a preferred, the lifting device lifts the pier column structure by a preset distance of 10-50 cm, so as to form a clearance space between the pier column structure and the upper part of the bearing platform.

[0019] As a preferred, during the lowering of the pier column structure by the lifting device, the verticality of the pier column structure is monitored in real time, and when the verticality deviation exceeds a threshold value, the lowering process is paused and a leveling mechanism is started.

[0020] As a preferred, the speed of the lifting device driving the pier column structure to move in the horizontal direction is 0.5-2 m / min.

[0021] As a preferred, the lifting speed and the lowering speed of the pier column structure are 0.1-0.5 m / min.

[0022] On the other hand, the application also provides a lifting device applied to the pier column installation method, comprising:

[0023] A portal frame erected above the bearing platform, the portal frame is provided with a guide rail extending in the horizontal direction;

[0024] A walking driving assembly slidingly connected to the guide rail, the walking driving assembly comprises a power source and a transmission wheel matched with the guide rail;

[0025] A lifting mechanism fixedly connected below the walking driving assembly, the lifting mechanism comprises a winch, a traction rope, and a hoisting connector, the hoisting connector is used for hoisting and connecting the pier column structure, the output end of the winch is connected with the hoisting connector through the traction rope, and the winch controls the hoisting connector to rise and fall by winding and unwinding the traction rope.

[0026] As a preference, the lifting connector is one of a hook, a self-locking claw, or a hydraulic pin.

[0027] Advantages of the present application:

[0028] The pier column installation method provided by the present application first installs the lifting device to make the output end of the lifting device above the bearing platform, thereby providing a foundation support for subsequent operations. Then, the pier column structure is moved to the initial position of the bearing platform, and then the lifting device is used to connect and lift the pier column structure by a preset distance, so that the pier column structure is vertically lifted to a preset height, thereby creating space for subsequent operations and moving away from the initial position, thereby creating conditions for horizontal movement. The lifting device drives the pier column structure to move in the horizontal direction to above the target position of the bearing platform, thereby solving the problem that it is difficult to realize horizontal displacement by using large mechanical equipment in a small space. Finally, the pier column structure is lowered and installed at the target position of the bearing platform, and the entire process does not require large mechanical equipment to perform complex lifting and installation operations, thereby effectively avoiding the problem of insufficient space occupation of large mechanical equipment due to space limitations, improving the operability of pier column installation in a small space, reducing the construction difficulty, reducing the safety risk, improving the construction efficiency, and ensuring the project progress. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is the first front view of the pier column installation process provided by the first embodiment of the present application;

[0030] Figure 2 is the first side view of the pier column installation process provided by the first embodiment of the present application;

[0031] Figure 3 is the second front view of the pier column installation process provided by the first embodiment of the present application;

[0032] Figure 4 is the second side view of the pier column installation process provided by the first embodiment of the present application;

[0033] Figure 5 is the third front view of the pier column installation process provided by the first embodiment of the present application;

[0034] Figure 6 is the third side view of the pier column installation process provided by the first embodiment of the present application;

[0035] Figure 7 is the fourth front view of the pier column installation process provided by the first embodiment of the present application;

[0036] Figure 8 is the fourth side view of the pier column installation process provided by the first embodiment of the present application;

[0037] Figure 9 is the fifth front view of the pier column installation process provided by the first embodiment of the present application;

[0038] Figure 10 is the fifth side view of the pier installation process provided by the embodiment one of the present application;

[0039] Figure 11 is the sixth front view of the pier installation process provided by the embodiment one of the present application;

[0040] Figure 12 is the sixth side view of the pier installation process provided by the embodiment one of the present application;

[0041] Figure 13 is the seventh front view of the pier installation process provided by the embodiment one of the present application;

[0042] Figure 14 is the seventh side view of the pier installation process provided by the embodiment one of the present application;

[0043] Figure 15 is the eighth front view of the pier installation process provided by the embodiment one of the present application;

[0044] Figure 16 is the eighth side view of the pier installation process provided by the embodiment one of the present application.

[0045] In the drawings:

[0046] 100, pier structure; 200, pile cap;

[0047] 1, portal frame; 2, walking driving assembly; 21, guide rail; 22, transmission wheel; 3, lifting mechanism; 31, winch; 32, traction rope; 33, hoisting connector. DETAILED DESCRIPTION

[0048] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0049] In the description of the present application, unless explicitly defined and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.

[0051] The technical solutions of the present application will be further illustrated below in conjunction with the drawings and through specific embodiments.

[0052] Embodiment one

[0053] Referring to Figures 1 to 16 , the pier mounting method provided by the embodiment of the present application comprises the following steps: installing a lifting device so that the output end of the lifting device is located above the bearing platform 200; moving the pier structure 100 to an initial position of the bearing platform 200; connecting the output end of the lifting device to the pier structure 100 and lifting the pier structure 100 by a preset distance value through the lifting device; driving the lifting device to drive the pier structure 100 to move in the horizontal direction, so that the pier structure 100 is moved to above the target position of the bearing platform 200; and lowering and installing the pier structure 100 on the target position of the bearing platform 200 through the lifting device.

[0054] The pier mounting method provided by the present application first installs the lifting device so that the output end of the lifting device is located above the bearing platform 200, thereby providing a foundation support for subsequent operations. Then the pier structure 100 is moved to the initial position of the bearing platform 200, and then the lifting device is used to connect and lift the pier structure 100 by a preset distance value, so that the pier structure 100 is lifted vertically to a preset height, thereby creating space for subsequent operations, moving away from the initial position and creating conditions for horizontal movement. The lifting device is driven to drive the pier structure 100 to move in the horizontal direction to above the target position of the bearing platform 200, thereby solving the problem that it is difficult to realize horizontal displacement through large mechanical equipment in a small space. Finally, the pier structure 100 is lowered and installed on the target position of the bearing platform 200, and the entire process does not require large mechanical equipment to perform complex lifting and installation operations, effectively avoiding the problem of insufficient space occupation of large mechanical equipment due to space limitation, improving the operability of pier installation in a small space, reducing construction difficulty, reducing safety risk, improving construction efficiency and ensuring project progress.

[0055] The specific steps of the pier mounting method will be described in detail below.

[0056] Before the installation of the pier structure 100, the installation and positioning of the lifting device should be completed first. Specifically, the lifting device is stably arranged at the available construction area around the bearing platform 200, and the output end of the lifting device is accurately hovered at the predetermined working height above the bearing platform 200 by adjusting the position and attitude of the main structure of the lifting device.

[0057] During the installation process, the layout of the lifting device needs to be adjusted according to the space conditions on site, and the reliable fixation of the lifting device is usually achieved by means of adjustable supports or anchoring mechanisms to ensure that the output end of the lifting device maintains a set working distance from the installation surface of the bearing platform 200 in the vertical direction. At the same time, the horizontal position reference of the output end needs to be calibrated so that its subsequent motion trajectory can cover the horizontal movement path of the pier structure 100 from the initial position to the target position.

[0058] After that, the pier structure 100 is moved to the initial position of the bearing platform 200; the initial position is located at the edge or adjacent area of the designated operation plane of the bearing platform 200, and is usually selected to be directly below the output end of the lifting device or adjacent to the connectable area. The transfer process uses miniaturized moving equipment suitable for narrow spaces, such as low-height transfer trolleys or rail sliding systems, to enable the pier structure 100 to move smoothly along the preset path within the limited working width. When the pier structure 100 is guided to the initial position, the adjustable support mechanism or temporary fixing device is used to maintain its vertical state, providing stable docking conditions for the subsequent reliable connection with the output end of the lifting device.

[0059] After that, the output end of the lifting device is connected to the pier structure 100, and the pier structure 100 is lifted by the lifting device by a preset distance value;

[0060] Preferably, the lifting device lifts the pier structure 100 by a preset distance value of 10-50 cm, so as to form a clearance space between the pier structure 100 and the upper part of the bearing platform 200. This distance range not only ensures that the pier structure 100 has enough space to move horizontally away from the initial position of the bearing platform 200, but also does not increase the construction difficulty and safety risk due to excessive lifting. By means of appropriate clearance space, the pier structure 100 can avoid collision with obstacles around the bearing platform 200 during horizontal movement, ensuring the smooth progress of the movement. At the same time, this distance range helps to accurately control the lifting height, reduces the high requirements on the performance of the lifting device, improves the construction efficiency and reduces resource waste on the premise of meeting the construction needs.

[0061] The driving of the lifting device drives the pier structure 100 to move in the horizontal direction, so that the pier structure 100 moves above the target position of the bearing platform 200.

[0062] The speed of the lifting device driving the pier structure 100 to move in the horizontal direction is 0.5-2 m / min. This speed range can ensure the stability of the pier structure 100 during horizontal movement, and the speed is not too fast to cause the pier structure 100 to shake greatly, reduce the risk of collision with the surrounding obstacles or falling due to shaking, and ensure construction safety. At the same time, this speed is not too slow, avoiding the extension of the construction time due to low speed, affecting the construction efficiency, and ensuring that the pier structure 100 is safely and efficiently moved to the target position above the pile cap 200 in the limited construction space.

[0063] After the pier structure 100 is moved to the target position above the pile cap 200, the pier structure 100 is lowered and installed on the target position of the pile cap 200 by the lifting device.

[0064] The lifting speed and lowering speed of the pier structure 100 are 0.1-0.5 m / min. This speed range can ensure that the pier structure 100 is precisely controlled during lifting and lowering, and the speed is not too fast to be difficult to control, avoiding damage to the pier structure 100 and surrounding structures due to improper operation, improving construction safety. Slow lifting and lowering also facilitate real-time observation and adjustment of the position and state of the pier structure 100 by the construction personnel, ensuring that the pier structure 100 can be accurately aligned during installation, improving installation accuracy, and thus improving the stability and quality of the entire bridge structure, while also helping the construction personnel to better cooperate with the operation of the lifting device and improving construction efficiency.

[0065] In addition, during the lowering of the pier structure 100 by the lifting device, the perpendicularity of the pier structure 100 is monitored in real time, and when the perpendicularity deviation exceeds the threshold value, the lowering process is paused and the leveling mechanism is started.

[0066] In this embodiment, the pier structure 100 is provided with at least two; after the first pier structure 100 is lowered and installed on the target position of the pile cap 200, the lifting device moves the next pier structure 100 to the top of the installed pier structure 100, lowers the next pier structure 100, and installs it with the installed pier structure 100.

[0067] Specifically, the butt joint installation of the two adjacent pier column structures 100 comprises: presetting a connecting piece at the top of the installed pier column structure 100; aligning the bottom of the next pier column structure 100 to the connecting piece and lowering, so that the connecting piece is embedded into the butt joint groove of the next pier column structure 100. By presetting the connecting piece at the top of the installed pier column structure 100, a positioning and connecting basis is provided for the butt joint of the adjacent pier column structures 100, so that the subsequent butt joint operation is more directional and stable. The bottom of the next pier column structure 100 is aligned to the connecting piece and lowered, and the connecting piece is embedded into the butt joint groove, so that the accurate and reliable connection between the adjacent pier column structures 100 is realized, the accuracy of the butt joint of the pier column structure 100 is ensured, the verticality and integrity of the entire pier column structure 100 system are improved, and thus the stability and carrying capacity of the bridge structure are improved. Moreover, the operation of this mode is relatively simple, the difficulty of complex connection operation in a narrow space is reduced, and the construction efficiency is improved.

[0068] Preferably, after the butt joint installation of the two adjacent pier column structures 100, the outer periphery of the connecting position of the two pier column structures 100 is fixed by a hoop. The hoop can further enhance the integrity and stability of the connecting position of the adjacent pier column structures 100, so that the two pier column structures 100 can work better in coordination when subjected to stress, effectively disperse stress, avoid structural damage due to weak connecting position, and improve the carrying capacity of the entire pier column system and even the bridge structure. Moreover, the hoop installation is relatively convenient in the limited construction space, without the need for large and complex equipment, thereby reducing the construction difficulty and safety risk.

[0069] Embodiment two

[0070] The embodiment of the application also provides a lifting device applied to the pier column installation method provided in the embodiment one, for the sake of simplicity, wherein the same or corresponding parts as those in the embodiment one are denoted by the corresponding reference numerals in the embodiment one.

[0071] The lifting device comprises a portal frame 1, a walking driving assembly 2 and a lifting mechanism 3. The portal frame 1 is erected above the bearing platform 200, and the portal frame 1 is provided with a guide rail 21 extending in the horizontal direction. The walking driving assembly 2 is slidingly connected to the guide rail 21, and the walking driving assembly 2 comprises a power source and a transmission wheel 22 matched with the guide rail 21. The lifting mechanism 3 is fixedly connected below the walking driving assembly 2, and the lifting mechanism 3 comprises a winch 31, a traction rope 32 and a hoisting connector 33. The hoisting connector 33 is used for hoisting and connecting the pier column structure 100. The output end of the winch 31 is connected to the hoisting connector 33 through the traction rope 32. The winch 31 controls the lifting of the hoisting connector 33 by winding and unwinding the traction rope 32.

[0072] In use, first, the portal frame 1 is erected above the bearing platform 200, so that the guide rail 21 horizontally covers the moving path of the pier structure 100 from the initial position to the target position, ensuring its stability and accurate position, and providing a support framework for the entire lifting device.

[0073] Then, the walking driving assembly 2 is slidably connected with the guide rail 21 horizontally extending on the portal frame 1 through the transmission wheel 22, and is driven to accurately translate along the rail by the power source through the cooperation of the transmission wheel 22 and the guide rail 21. The lifting mechanism 3 retracts and releases the traction rope 32 through the winch 31, and controls the lifting connector 33 to ascend and descend to connect the pier structure 100.

[0074] During operation, the lifting connector 33 is first connected with the top of the pier structure 100 in the initial position, and the winch 31 lifts the pier structure 100 to a safe height.

[0075] Subsequently, the walking driving assembly 2 drives the lifting mechanism 3 to horizontally move along the rail, so that the pier structure 100 accurately reaches above the target position of the bearing platform 200; finally, the winch 31 lowers the pier to complete the installation. For multi-layer pier splicing, the operation can be repeated to realize accurate positioning section by section.

[0076] The design of the portal frame 1 erected above the bearing platform 200 reduces the occupied space on the construction site compared with large mechanical equipment, can adapt to the demand of multi-layer overhead construction in limited space, and solves the problem of insufficient space occupation of large mechanical equipment due to space limitation. The walking driving assembly 2 moves in the horizontal direction under the drive of the power source through the cooperation of the transmission wheel 22 and the guide rail 21, so that the lifting device can flexibly move the pier structure 100 above the bearing platform 200 to the target position, without the need for complex steering and displacement operation of large mechanical equipment, thereby improving the flexibility and efficiency of construction. The lifting mechanism 3 accurately controls the ascent and descent of the lifting connector 33 by retracting and releasing the traction rope 32 through the winch 31, so as to accurately control the lifting and lowering height of the pier structure 100, ensure that the pier structure 100 can be accurately positioned during installation, improve the installation precision, and further improve the stability and quality of the entire bridge structure. The overall device structure is relatively simple, convenient to operate, reduces the operation difficulty of the construction personnel, reduces the safety risk that may be caused by complex operation, and is also convenient for the construction personnel to maintain and manage.

[0077] Optionally, the lifting connector 33 is one of a hook, a self-locking claw, or a hydraulic pin shaft.

[0078] The hook structure is simple, convenient to use, easy to install and disassemble, can be quickly connected with the pier structure 100, improves the construction efficiency, and has low cost, and is suitable for use in some scenes with relatively low connection precision requirements.

[0079] The self-locking clamping jaw has an automatic locking function, can ensure firm connection and is not easy to fall off once connected with the pier structure 100, has high safety, and is especially suitable for a construction environment with strict requirements on connection stability, and effectively avoids the risk of accidental falling of the pier structure 100 in the lifting process.

[0080] The hydraulic pin shaft is driven by hydraulic pressure, is tightly and accurately connected, can bear a large load, can meet the lifting requirements of pier structures 100 of different weights, and is relatively easy to operate in the connection and separation process, and can be accurately controlled by controlling the hydraulic system, thereby improving the accuracy and reliability of construction.

[0081] It can be understood that the specific use form of the lifting connector 33 can be adaptively adjusted according to the actual requirements of the site working condition, and details are not described herein.

[0082] The above embodiments only illustrate the basic principles and characteristics of the present application, and the present application is not limited to the above embodiments. Various changes and modifications can be made without departing from the spirit and scope of the present application, and these changes and modifications all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A method for installing a pier column, characterized in that, include: Install a lifting device so that the output end of the lifting device is located above the support platform (200); Move the pier structure (100) to the initial position of the pier cap (200); The output end of the lifting device is connected to the pier structure (100), and the pier structure (100) is lifted up by a preset distance value through the lifting device. The lifting device is driven to move the pier structure (100) in the horizontal direction, so that the pier structure (100) moves to the target position above the pier (200); The pier structure (100) is lowered and installed at the target position of the pier cap (200) using the lifting device.

2. The pier installation method according to claim 1, characterized in that, The pier structure (100) is provided in at least two forms; After the first pier structure (100) is lowered and installed at the target position of the pier cap (200), the lifting device moves the next pier structure (100) to the top of the installed pier structure (100), lowers the next pier structure (100) and connects it with the installed pier structure (100) for installation.

3. The pier installation method according to claim 2, characterized in that, The docking installation of two adjacent pier structures (100) includes: A pre-installed connector is provided on the top of the installed pier structure (100); The bottom of the next pier structure (100) is aligned with the connector and lowered so that the connector is embedded in the mating groove of the next pier structure (100).

4. The pier installation method according to claim 2, characterized in that, After two adjacent pier structures (100) are installed together, they are fixed at the outer periphery of the connection point of the two pier structures (100) by clamps.

5. The pier installation method according to claim 1, characterized in that, The lifting device sets the preset distance value of the lifting on the pier structure (100) to 10-50cm, so that a clearance space is formed between the pier structure (100) and the top of the pier platform (200).

6. The pier installation method according to claim 1, characterized in that, During the process of lowering the pier structure (100) by the lifting device, the verticality of the pier structure (100) is monitored in real time. When the verticality deviation exceeds the threshold, the lowering process is paused and the leveling mechanism is activated.

7. The pier installation method according to claim 1, characterized in that, The lifting device drives the pier structure (100) to move horizontally at a speed of 0.5 to 2 m / min.

8. The pier installation method according to claim 1, characterized in that, The lifting and lowering speeds of the pier structure (100) are 0.1 to 0.5 m / min.

9. A lifting device, applied to the pier installation method according to any one of claims 1-8, characterized in that, include: A portal frame (1) is erected above a pier (200), and the portal frame (1) is provided with a guide rail (21) extending in the horizontal direction; The walking drive assembly (2) is slidably connected to the guide rail (21). The walking drive assembly (2) includes a power source and a transmission wheel (22) that cooperates with the guide rail (21). The lifting mechanism (3) is fixedly connected below the walking drive assembly (2). The lifting mechanism (3) includes a winch (31), a traction rope (32), and a hoisting connector (33). The hoisting connector (33) is used to hoist and connect the pier structure (100). The output end of the winch (31) is connected to the hoisting connector (33) through the traction rope (32). The winch (31) controls the lifting of the hoisting connector (33) by winding and unwinding the traction rope (32).

10. The lifting device according to claim 9, characterized in that, The lifting connector (33) is one of a hook, a self-locking claw, or a hydraulic pin.

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