A mounting and positioning device for precast cylindrical bridge piers

Abstract

This invention discloses an installation and positioning device for precast cylindrical bridge piers, comprising four positioning parts assembled together to form a positioning cavity for the precast cylindrical bridge pier. Each positioning part consists of a positioning device, an adjustment device, and a lifting device. The positioning device is mounted on the lifting device and consists of a base plate, a first telescopic device, a second telescopic device, a sleeve, and a laser positioning system. The first and second telescopic devices are mounted on the base plate to drive the sleeve to move radially along the precast cylindrical bridge pier. The laser positioning system is mounted on the side wall of the sleeve. The adjustment device consists of an electric track mechanism and a miniature camera. The electric track mechanism and the miniature camera are mounted on the inner wall of the sleeve, with the miniature camera mounted below the electric track mechanism.

Description

Technical Field

[0001] This invention relates to the field of assembly technology for prefabricated bridge building components, and in particular to a positioning device for installing prefabricated cylindrical bridge piers. Background Technology

[0002] With the rapid development of industrialized construction, road and bridge engineering has also entered a period of rapid assembly and industrialization. Precast bridge structure assembly refers to the process where the main components of a bridge structure, including beams, piers, and cap beams, are all precast. These precast components are assembled into a complete structure through specific connection methods. During the installation of precast piers, precise positioning is required to accurately install the superstructure components, such as cap beams.

[0003] As road and bridge engineering continues to develop, the types and structures of bridge piers used have diversified for different projects. Considering the actual construction conditions, cylindrical piers have more obvious advantages in terms of isotropy and avoiding stress concentration, and can adapt to various complex stress states. From a fluid mechanics perspective, cylindrical piers have significant advantages under both wind and water loads. From a construction perspective, cylindrical piers are easier to control in terms of quality at every stage of construction, from reinforcement to formwork to concrete, compared to square piers. Although the use of cylindrical piers in road and bridge engineering is becoming increasingly widespread, there is still a significant gap in research and development regarding the installation and positioning of precast cylindrical piers.

[0004] The key indicator for the installation and positioning of precast piers is verticality, while for precast cylindrical piers, accuracy is an additional key indicator. In practical applications, the installation accuracy of precast cylindrical piers generally depends on the degree of matching between the position of the reserved reinforcing bars and the position of the reserved corrugated pipes in the upper components of the pier (such as cap beams).

[0005] In the positioning and installation of precast piers, the common practice is to use large lifting equipment to hoist the precast piers and install them at the predetermined positions on the top surface of the pier cap. During the installation and positioning process, the large lifting equipment needs to operate continuously until the precast pier is in place and precisely positioned. However, directly applying this traditional construction method to the positioning and installation of precast cylindrical piers presents several problems. Firstly, the installation accuracy cannot be well controlled and guaranteed, requiring additional manpower and resources for adjustment, supervision, and control during installation. Furthermore, adjustments after installation are difficult. Secondly, the traditional method is highly dependent on large lifting equipment and construction personnel, resulting in low construction efficiency and slow construction speed. Finally, using this traditional method for the positioning and installation of precast cylindrical piers necessitates the addition of positioning devices for the precast cylindrical piers and the exploration of suitable verification methods to confirm whether the precast cylindrical piers are accurately installed in the designed position and whether they can be smoothly assembled with superstructure components (such as cap beams).

[0006] In summary, a precast cylindrical bridge pier installation and positioning device is needed in actual construction to solve the problems of verticality and accuracy in the installation and positioning of precast cylindrical bridge piers. Summary of the Invention

[0007] Based on the above research status, the purpose of this invention is to provide an installation and positioning device for prefabricated cylindrical bridge piers, mainly for prefabricated components, and is applicable to prefabricated cylindrical bridge piers.

[0008] The present invention adopts the following technical solution:

[0009] This invention proposes an installation and positioning device for precast cylindrical bridge piers, comprising four positioning parts assembled together to form a positioning cavity for the precast cylindrical bridge pier. Each positioning part consists of a positioning device, an adjustment device, and a lifting device. The positioning device is mounted on the lifting device and comprises a base plate, a first telescopic device, a second telescopic device, a sleeve, and a laser positioning system. The first and second telescopic devices, mounted on the base plate, drive the sleeve to move radially along the precast cylindrical bridge pier. The laser positioning system is mounted on the side wall of the sleeve. The adjustment device comprises an electric track mechanism and a miniature camera. The electric track mechanism and the miniature camera are mounted on the inner wall of the sleeve, with the miniature camera mounted below the electric track mechanism.

[0010] As a further technical solution, the electric track mechanism includes a drive wheel, a support frame, and a track. The drive wheel is installed on both sides of the support frame in a vertical direction, and the track wraps around the outside of the drive wheel.

[0011] As a further technical solution, the track is made of synthetic anti-slip rubber.

[0012] As a further technical solution, anti-slip patterns are set on the track surface and silicone rubber suction cups are embedded inside.

[0013] As a further technical solution, the side of the support frame that contacts the track is coated with polytetrafluoroethylene.

[0014] As a further technical solution, the laser positioning system includes a laser signal transmitter and a laser signal receiver. The laser signal transmitter is installed on the lower side of the connection between the first telescopic device and the sleeve, and the laser signal receiver is installed at the corresponding position on the upper side of the base plate.

[0015] As a further technical solution, the sleeve has a 1 / 4 arc structure, and the four sleeves are combined together to form a cylindrical cavity.

[0016] As a further technical solution, the first telescopic device is connected to the upper part of the outer side of the sleeve, and the second telescopic device is connected to the lower part of the outer side of the sleeve.

[0017] As a further technical solution, the lifting device includes a third telescopic device and a base, wherein the third hydraulic telescopic device is installed on the base and drives the base plate to move.

[0018] As a further technical solution, the four base plates are inserted together and connected by connectors.

[0019] Specifically, the working principle of this invention is as follows:

[0020] After assembling the device around the target location, open the positioning device outwards and raise the lifting device upwards. Use lifting equipment to hoist the precast cylindrical pier vertically into the device. When the miniature camera on the device shows the bottom of the precast component is close to the pre-reserved reinforcing bars on the top surface of the foundation, close the positioning device inwards to grip the precast pier and release the lifting equipment. Adjust the lateral hydraulic telescopic device in the positioning device to ensure the laser signal receiver receives the laser signal. Due to the rectilinear propagation of light, when the laser receiver receives the signal, the precast pier has reached a vertical position. Then, rotate the precast pier to align the pre-embedded reinforcing bars in the designed position. Slowly lower the lifting device to the bottom of the precast component and install it onto the top surface of the foundation. Reconfirm the verticality and accuracy of the installation positioning using the laser positioning system and miniature camera.

[0021] The beneficial effects of this invention are:

[0022] This invention provides a precast cylindrical bridge pier installation and positioning device, which enables rapid positioning and installation of precast cylindrical bridge piers, reduces the construction difficulty of positioning and installation of precast cylindrical bridge piers, and improves the construction quality and accuracy of precast cylindrical bridge piers.

[0023] This invention utilizes a lifting device to adjust the position of precast cylindrical bridge piers while simultaneously lifting the bottom of the precast components away from the top surface of the foundation, thereby protecting both the precast components and the top surface of the foundation.

[0024] This invention adopts a modular design, which can effectively reduce equipment maintenance and replacement costs, and also makes it easier to upgrade or replace equipment according to different uses.

[0025] This invention enables temporary lifting operations of precast components, reduces the operating time of large lifting equipment in the positioning and installation of precast cylindrical bridge piers, lowers equipment requirements, reduces construction costs, and improves construction efficiency.

[0026] This invention benefits from the design of the lifting device, which can adapt to different pier installation methods, such as socket type, butt type, cast-in-place foundation, etc. By replacing the base of the lifting device, it can adapt to a variety of working environments.

[0027] This invention utilizes a laser positioning system and a miniature camera to assist construction workers in quickly positioning and adjusting precast cylindrical bridge piers, thereby increasing the speed of positioning and installation and reducing labor costs.

[0028] The invention can be remotely and electrically controlled throughout its operation, which can significantly improve the working environment of on-site construction personnel, enhance on-site construction safety, and take a further step towards realizing the modernization and intelligence of on-site construction. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0030] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0031] Figure 2 This is a side view of the overall structure of Embodiment 1 of the present invention;

[0032] Figure 3 This is a top view of the overall structure of Embodiment 1 of the present invention;

[0033] Figure 4 , 5 This is a schematic diagram of some of the component structures in Embodiment 1 of the present invention;

[0034] Figure 6 , 7 Figures 8 and 9 are schematic diagrams of the actual assembly application of Embodiment 1 of the present invention;

[0035] In the diagram: 1. Positioning device, 101. Base plate, 102. First hydraulic telescopic device, 103. Second hydraulic telescopic device, 104. Sleeve, 105. Laser positioning system, 2. Adjustment device, 201. Electric track mechanism, 2011. Track, 2012. Drive wheel, 2013. Support frame, 202. Miniature camera, 3. Lifting device, 301. Third hydraulic telescopic device, 302. Base. Detailed Implementation

[0036] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] For ease of description, the words "upper" and "lower" appearing in this invention only indicate that they are consistent with the upper and lower directions of the accompanying drawings and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] In this invention, "inner side" refers to the side closer to the precast cylindrical pier, and "outer side" refers to the side farther away from the precast cylindrical pier.

[0040] As described in the background section, current methods for positioning and installing precast cylindrical bridge piers suffer from drawbacks such as difficulty in controlling installation accuracy, high adjustment difficulty during installation, high dependence on large lifting equipment and construction personnel, and the need for significant investment in construction equipment. To address these issues, this embodiment provides a precast cylindrical bridge pier installation and positioning device, combined with attached... Figures 1-7 The present invention will be described in detail below, specifically, the structure is as follows:

[0041] The present invention proposes an installation and positioning device for precast cylindrical bridge piers, which mainly consists of four parts, such as... Figure 5As shown, the four parts are combined to form the installation and positioning device for the prefabricated cylindrical pier. After the four positioning devices are combined, they form a cylindrical cavity with an adjustable radius. This cylindrical cavity is used to fix the prefabricated cylindrical pier. The structure of each part is exactly the same. The following is a detailed description of one part as an example.

[0042] like Figure 1 As shown, each part consists of a positioning device 1, an adjusting device 2, and a lifting device 3. The adjusting device 2 is installed inside the positioning device 1, and the positioning device 1 is installed above the lifting device 3.

[0043] Among them, such as Figure 6 As shown, each positioning device 1 is as follows Figure 2 As shown, the device consists of a base plate 101, a first hydraulic telescopic device 102, a second hydraulic telescopic device 103, a sleeve 104, and a laser positioning system 105. The four base plates are connected by slots and bolts. Furthermore, the positioning device 1 has a base plate 101 at its bottom, which is mounted on the upper side of the third hydraulic telescopic device 301. The first hydraulic telescopic device 102 and the second hydraulic telescopic device 103 are fixedly mounted on the top of the base plate 101 and connected to the outer side of the sleeve 104, driving the sleeve to move radially along the precast cylindrical pier. The sleeve 104 has a 1 / 4 arc structure, and the four sleeves 104 are combined to form a cylindrical cavity.

[0044] As a further technical solution, the first hydraulic telescopic device 102 is connected to the upper part of the outer side of the sleeve, and the second hydraulic telescopic device 103 is connected to the lower part of the outer side of the sleeve. The two hydraulic telescopic devices simultaneously drive the sleeve to move inward, ensuring the stability of the sleeve movement.

[0045] Furthermore, the laser positioning system 105 includes a laser signal transmitter and a laser signal receiver. The laser signal transmitter is installed on the lower side of the connection between the first hydraulic telescopic device 102 and the sleeve 104, and the laser signal receiver is installed at the corresponding position on the upper side of the base plate 101. A hole is provided at the connection between the second hydraulic telescopic device 103 and the sleeve 104 to allow the laser signal of the laser positioning system 105 to pass through normally. The laser positioning system 105 is mainly used to detect the verticality of the precast pier and whether it meets the design value. The specific detection principle is that the laser signal transmitter emits a laser. If the laser signal receiver receives the laser, it means that the verticality of the precast pier meets the requirements. If the laser signal receiver cannot receive the laser, it means that the verticality of the precast pier does not meet the requirements.

[0046] Furthermore, the adjustment device 2 consists of an electric track mechanism 201, a miniature camera 202, etc. The electric track mechanism 201 is fixedly installed on the inner side of the sleeve 104, and includes a drive wheel 2012, a support frame 2013, and a track 2011. The track 2011 has anti-slip patterns and a suction cup structure on its surface. The entire track is made of synthetic anti-slip rubber material, while the suction cup structure is made of silicone rubber. Furthermore, the drive wheel 2012 is installed on both sides of the support frame 2013, and the track 2011 covers the outer sides of the drive wheel 2012 and the support frame 2013. To ensure smooth operation of the electric track mechanism 201, a polytetrafluoroethylene coating is applied to the contact area between the support frame 2013 and the track 2011 to reduce friction.

[0047] Furthermore, the inner side of the sleeve 104 that contacts the track 2011 is also coated with polytetrafluoroethylene.

[0048] Furthermore, a miniature camera 202 is installed on the underside of the electric track mechanism 201 to facilitate operators in viewing the location of the precast cylindrical bridge pier reinforcement bars inside the device.

[0049] Furthermore, the track 2011 uses synthetic anti-slip rubber tracks with anti-slip textures on the surface and embedded silicone rubber suction cups. After the suction cups adhere to the precast pier, the track 2011 is controlled to rotate, thereby driving the precast pier to rotate and bringing the precast pier's embedded steel bars to the design position.

[0050] Furthermore, such as Figure 2 As shown, the lifting device 3 mainly consists of an electro-hydraulic telescopic device 301 and a base 302. The electro-hydraulic telescopic device 301 is installed at the bottom of the base plate, and a complete device includes four lifting devices. See details. Figure 6 .

[0051] The specific work process is as follows:

[0052] During on-site construction, after the device is assembled, it is placed in the designed installation position of the precast cylindrical pier. The positioning device 1 of the device is controlled to open outward, and the lifting device 3 of the device is controlled to rise upward, thus completing the preparation work for positioning and installation construction.

[0053] Using lifting equipment, the precast cylindrical pier is vertically hoisted into the sleeve 104 of this device. Real-time monitoring is conducted via the device's miniature camera 202. When the bottom surface of the precast cylindrical pier approaches the bottom of the adjusting device 2, the positioning device 1 is controlled to grip the precast pier inwards, and the lifting equipment is released. The first hydraulic telescopic device 102 and the second hydraulic telescopic device 103 are adjusted to ensure the precast pier reaches a vertical position. The laser positioning system 105 ensures the verticality of the precast pier meets the design value. Then, the adjusting device 2 rotates the precast pier to position its embedded reinforcing bars. The lifting device 3 is controlled to slowly lower the precast component to install its bottom onto the top surface of the foundation. After confirming the verticality and accuracy of the installation and positioning meet the design values ​​again using the laser positioning system 105 and the miniature camera 202, the device is dismantled, cleaned, inspected, and then recycled for future use.

[0054] When the ground at the construction site is not hardened or the construction area is relatively narrow, the support capacity of the device can be improved by replacing the base 302 to prevent uneven stress on the device.

[0055] This invention proposes a positioning and installation device for precast cylindrical bridge piers based on the actual construction site conditions of prefabricated road and bridge engineering. It can adapt to precast cylindrical bridge piers of different sizes and can effectively improve the construction quality and speed of positioning and installation of precast cylindrical bridge piers.

[0056] This device solves the problem that traditional construction methods for positioning and installing precast piers are difficult to adjust during installation and sometimes require adjustment after installation by integrating the positioning and adjustment devices into one unit. This allows the installation and adjustment work to be completed simultaneously.

[0057] The device is equipped with a variety of electronic instruments and an intelligent operating system, enabling construction technicians to independently monitor and complete the positioning and installation work remotely, eliminating the need for multiple construction technicians to be on-site simultaneously to observe and direct the positioning and installation work.

[0058] The device is easy to install, requiring no pre-embedded components in prefabricated structures. It features simple and efficient assembly processing and construction, easy disassembly, and reusability.

[0059] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A method for installation positioning of a precast cylindrical pier, characterized by, This method employs an installation positioning device, which comprises four positioning parts assembled together to form a positioning cavity for a prefabricated cylindrical pier. Each positioning part consists of a positioning device, an adjustment device, and a lifting device. The positioning device is mounted on the lifting device and comprises a base plate, a first hydraulic telescopic device, a second hydraulic compression device, a sleeve, and a laser positioning system. The first and second hydraulic telescopic devices, mounted on the base plate, drive the sleeve to move radially along the prefabricated cylindrical pier. The sleeve has a 1 / 4 arc structure, and the four sleeves are combined to form a cylindrical cavity. The laser positioning system is mounted on the side wall of the sleeve. The adjustment device comprises an electric track mechanism and a miniature camera. The electric track mechanism and the miniature camera are mounted on the inner wall of the sleeve, with the miniature camera mounted below the electric track mechanism. The electric track mechanism includes a drive wheel, a support frame, and a track. The drive wheel is mounted vertically on both sides of the support frame, and the track is wound around the drive wheel. The laser positioning system includes a laser signal transmitter and a laser signal receiver. The laser signal transmitter is installed on the lower side of the connection between the first hydraulic telescopic device and the sleeve, and the laser signal receiver is installed at the corresponding position on the upper side of the base plate. After assembling the installation and positioning device around the target location, the device is opened outwards, and the lifting device is raised. The precast cylindrical pier is then lifted vertically into the installation and positioning device using the lifting equipment. When the miniature camera on the installation and positioning device shows that the bottom of the precast cylindrical pier is close to the pre-reserved reinforcing steel on the top surface of the foundation, the positioning device is tightened inwards around the pier, and the lifting equipment is released. The first and second hydraulic telescopic devices in the positioning device are adjusted to ensure the laser signal receiver receives the laser signal. Once the laser receiver receives the signal, the precast cylindrical pier is in a vertical position. The precast cylindrical pier is then rotated using the adjustment device to bring the pre-embedded reinforcing steel to the designed position. The lifting device is then slowly lowered to the bottom of the precast cylindrical pier and installed on the top surface of the foundation. The verticality and accuracy of the installation and positioning are then confirmed again using the laser positioning system and the miniature camera.

2. A method for positioning a precast cylindrical pier installation as defined in claim 1, wherein, The tracks are made of synthetic anti-slip rubber.

3. A method for positioning a precast cylindrical pier installation as defined in claim 2, wherein, The track surface is equipped with anti-slip texture and has embedded silicone rubber suction cups.

4. The method for positioning the installation of precast cylindrical piers according to claim 1, wherein, The side of the support frame that contacts the track is coated with polytetrafluoroethylene.

5. The installation and positioning method for prefabricated cylindrical bridge piers as described in claim 1, characterized in that, The first hydraulic telescopic device is connected to the upper part of the outer side of the sleeve, and the second hydraulic telescopic device is connected to the lower part of the outer side of the sleeve.

6. The installation and positioning method for prefabricated cylindrical bridge piers as described in claim 1, characterized in that, The lifting device includes a third hydraulic telescopic device and a base. The third hydraulic telescopic device is installed on the base and drives the base plate to move.

7. The installation and positioning method for precast cylindrical bridge piers as described in claim 1, characterized in that, The four base plates are inserted together and connected by connectors.

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