Adjusting platform for mounting large embedded parts of steel dam gate and mounting construction method of adjusting platform

Abstract

The invention relates to an adjusting platform for mounting large embedded parts of a steel dam gate and a mounting construction method of the adjusting platform. An adjusting platform for installing a large embedded part of a steel dam gate comprises two supporting units. Each supporting unit comprises at least two longitudinal supporting rods, adjusting mechanisms corresponding to the longitudinal supporting rods in number, limiting supporting plates corresponding to the longitudinal supporting rods in number, a transverse supporting rod, a plurality of cushion blocks and a plurality of lateral supporting pieces. The longitudinal supporting rod comprises a lifting part and a fixed part which are not connected with each other; the adjusting mechanism comprises a sliding sleeve, a force exerting plate and a hydraulic jack. By means of the design of the adjustable adjusting platform, a firm, stable and reliable supporting frame can be provided for the large embedded part, the initial position plane and flatness of the large embedded part are guaranteed, after the large embedded part suspension is arranged on the adjusting platform, accurate position adjustment can be conducted through the adjusting platform, and the adjustment precision is improved. Therefore, a traditional hoisting adjustment mode is avoided, and the safety risk is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of embedded part installation, in particular to an adjustment platform for installing large embedded parts of a steel dam gate and an installation construction method thereof. Background Art

[0002] Some large embedded components, such as control gates in comprehensive river management projects, have metal structures including the main gate, regulating gate, and hoist. These gates can measure up to 50 by 7.5 meters, so the embedded components serving as bottom supports are also very large and heavy, weighing tens of tons. The bottom of the embedded component cannot contact the concrete surface below, requiring a certain adjustable suspension clearance to connect the anchor bolts at the bottom of the embedded component. This requires the embedded component to be suspended once in place. The installation of these large embedded components differs from that of conventional small embedded components. In existing technology, small embedded components are typically installed by hoisting them with a crane. However, hoisting large embedded components is difficult due to their immense weight, making them difficult to move into place and precisely adjust. Furthermore, their heavy weight creates a risk of tipping during hoisting and adjustment, which can easily lead to personal injury and quality accidents. Current technology also uses support frames for large embedded parts, but the existing support frames are generally welded steel frames. The embedded parts are first placed on the support frames by hoisting, and then manually adjusted in place. However, such support frames can only support the suspended embedded parts. To subsequently adjust the position and elevation of the large embedded parts, the embedded parts must be hoisted by a crane, and then spacers are placed between the support frame and the embedded parts, or a layer is removed to accurately adjust the position. During the hoisting process, manual intervention makes it difficult to control the swing and posture adjustment of the embedded parts, making precise positioning difficult. This is not only time-consuming and labor-intensive, but also poses safety risks during the hoisting and adjustment process. Summary of the Invention

[0003] Based on this, it is necessary to provide an adjustment platform for the installation of large embedded parts of steel dam gates and its installation and construction method in view of the problems that the existing technology has great safety hazards and is time-consuming and labor-intensive for the installation of large embedded parts.

[0004] In a first aspect, the present invention provides an adjustment platform for installing large embedded parts of a steel dam gate, which includes two support units: each support unit includes:

[0005] at least two longitudinal support rods including a lifting portion and a fixed portion that are not connected to each other;

[0006] The adjustment mechanism corresponds to the number of longitudinal support rods and includes: a sliding sleeve, a force plate, and a hydraulic jack; one end of the sliding sleeve is fixedly connected to the lower half of the lifting part; the other end is slidably connected to the upper half of the fixed part; the force plate is fixedly connected to the fixed part; the hydraulic jack is connected to the force plate, and its piston abuts against the bottom of the sliding sleeve to adjust the height of the lifting part;

[0007] A transverse support rod, which is movably arranged on the top of the multiple lifting parts and is used to place embedded parts;

[0008] A plurality of pads are arranged between the lifting part and the fixed part, and are used to support the lifting part after the height is adjusted by the adjusting mechanism.

[0009] In a second aspect, the present invention further provides a method for installing and constructing large embedded parts of a steel dam gate, which is applied to the adjustment platform for installing large embedded parts of a steel dam gate in the first aspect, and comprises the following steps:

[0010] S1. Pour the first layer of concrete and set the dowel bars during pouring;

[0011] S2. After the first layer of concrete solidifies, make an adjustment platform on it;

[0012] After the adjustment platform is completed, the horizontal support rods are calibrated in plane position and elevation position;

[0013] After the correction is completed, the bottom of the fixed part of the longitudinal support rod is welded to the dowel;

[0014] S3. Hoist the embedded parts and place them on the transverse support rods, and measure the plane position and elevation position of the embedded parts;

[0015] Adjust embedded parts that do not meet the plane position and elevation position accuracy requirements; elevation position adjustment includes: using hydraulic jacks to act on the sliding sleeve to adjust the height of the lifting part, and then adjusting the lifting and lowering of both sides of the adjustment platform, while assisting with measuring tools, until the elevation position of the embedded parts meets the accuracy requirements;

[0016] S4. Weld and fix the transverse support rods to the plurality of limit support plates;

[0017] Weld and fix the embedded parts and transverse support rods;

[0018] Insert the pad between the lifting part and the fixed part and weld it in place. After the pad is welded and fixed, remove the hydraulic jack.

[0019] After the bottom anchor bolts of the embedded parts are connected, the second layer of concrete is poured until the elevation of the embedded parts; after the second layer of concrete solidifies, the installation of the large embedded parts is completed.

[0020] The beneficial effects of the present invention are:

[0021] 1. The present invention provides a strong, stable and reliable support frame for large embedded parts through the design of an adjustable adjustment platform, ensuring the initial position plane and flatness of the large embedded parts. It can also enable the large embedded parts to be suspended on the adjustment platform and then accurately adjusted in position through the adjustment platform itself, thereby avoiding the traditional hoisting adjustment method, greatly reducing safety risks, and using hydraulic jacks for elevation adjustment, saving time and effort.

[0022] 2. The present invention welds and fixes the large embedded parts to the adjustment platform after the accuracy requirements are met, which not only ensures the accuracy requirements of the adjustment, but also ensures that the large embedded parts will not be deviated or deformed during the subsequent concrete pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a structural diagram of the adjustment platform for installing large embedded parts of the steel dam gate;

[0025] Figure 2 is a structural schematic diagram of one of the support units;

[0026] Figure 3 This is a schematic diagram of the position when the heights of the two sides of the horizontal support rod are different.

[0027] In the figure: longitudinal support rod 1, lifting part 11, fixed part 12, adjustment mechanism 2, sliding sleeve 21, force plate 22, transverse support rod 3, lateral support member 4, sleeve 41, connecting rod 42, limit support plate 5. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component. When a component is considered to be "fixed to" another component, it may be directly fixed to the other component or there may be a central component.

[0030] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] Example 1

[0033] Please refer to Figure 1 and Figure 2 This embodiment provides an adjustment platform for installing large embedded parts of a steel dam gate, which includes two support units. The two support units are arranged in parallel to jointly support the large embedded parts. Each support unit includes: at least two longitudinal support rods 1, adjustment mechanisms 2 corresponding to the number of longitudinal support rods 1, limit support plates 5 corresponding to the number of longitudinal support rods 1, transverse support rods 3, several pads, and several lateral support members 4 ( Figure 1 and Figure 2 (The middle pad and hydraulic jack are not shown.) Specifically, taking one longitudinal support rod 1 as an example, it includes a lifting portion 11 and a fixed portion 12. These two portions are collinear but not connected to each other, equivalent to a single rod being broken into two parts. The fixed portion 12 is fixed to the ground (for ease of description, the ground is poured concrete). The lifting portion 11 is located above the fixed portion 12.

[0034] Each longitudinal support rod 1 is equipped with an adjustment mechanism 2. This adjustment mechanism 2 comprises a sleeve 21, a force plate 22, and a hydraulic jack. One end of the sleeve 21 is fixedly connected to the lower half of the lifting portion 11, while the other end is slidably connected to the upper half of the fixed portion 12. The specific form of the sleeve 21 is not limited, but it must have sufficient structural strength to withstand the weight of the large embedded parts. In this embodiment, the sleeve 21 is configured as a three-dimensional frame structure, comprising two collars and multiple rods fixed between the two collars. One collar is fixedly connected to the lifting portion 11 and welded together, ensuring sufficient contact area to ensure sufficient connection strength. The other collar is slidably connected to the fixed portion 12, supporting both collars through the strength of the multiple rods. The force plate 22 is welded to the fixed portion 12 of the longitudinal support rod 1 and serves to accommodate the hydraulic jack and provide a force point for the hydraulic jack. On the one hand, there may be no space for the hydraulic jack due to the possibility of tied or inserted rebar on the ground. On the other hand, the suitable height welding force plate 22 can be selected according to the piston length of the hydraulic jack to improve the adaptability of the hydraulic jack. The hydraulic jack can be selected from suitable models on the market according to the thrust range.

[0035] A limiting support plate 5 is fixed on the top of each lifting part 11. The limiting support plate 5 is set to be U-shaped, and when fixed on the lifting part 11, the openings of the multiple limiting support plates 5 are all set upward. The transverse support rod 3 is placed in the multiple limiting support plates 5. The multiple limiting support plates 5 jointly support and limit the transverse support rod 3 to prevent it from falling. At the same time, the advantage of such a setting is that it can also avoid interference between the two longitudinal support rods 1 and the transverse support rod 3 when they are lifted and lowered separately, and the horizontal angle of the transverse support rod 3 can be adjusted conveniently and quickly. Moreover, since the transverse support rod 3 is directly stacked on the limiting support plate 5, its bearing capacity is also relatively large. Furthermore, the opening depth of the limiting support plate 5 is preferably less than the height of the transverse support rod 3 to prevent affecting the embedded parts. The pad can be a metal pad. After the longitudinal support rod 1 is adjusted to the right position, the pad is filled between the lifting part 11 and the fixed part 12, and then welded and fixed to support the lifting part 11.

[0036] Furthermore, in order to prevent the longitudinal support rod 1 from tipping over. In this embodiment, four lateral support members 4 are provided in a support unit for symmetrical installation: two lateral support members 4 are provided on both sides of one of the longitudinal support rods 1, and the other two lateral support members 4 are provided on both sides of the other longitudinal support member. Specifically, the lateral support member 4 includes a sleeve 41 and an L-shaped connecting rod 42. The bottom of the sleeve 41 is fixed to the ground, and the length direction of the sleeve 41 is consistent with the length direction of the longitudinal support rod 1. One end of the connecting rod 42 extends into the sleeve 41 and is slidably connected, and the other end is welded and fixed to the side wall of the lifting part 11. As the lifting part 11 rises and falls, the connecting rod 42 is driven to slide in the sleeve 41, and the sleeve 41 provides support force, and the longitudinal support rod 1 is supported by the connecting rod 42 to prevent it from tipping over.

[0037] To fully ensure the rigidity, strength, and stability of the adjustment platform and effectively guarantee safety during construction and installation, the components of the adjustment platform can be made of I-beams or angle steel. The cross-section of an I-beam is shaped like an I-shape, which gives it high bending and tensile strength when subjected to external forces. Angle steel is made from cold-bent or hot-rolled steel plates, and its strength is much higher than that of ordinary steel. It can withstand large loads, thereby enhancing the stability of the structure. In addition, angle steel and I-beams are easy to cut and weld, and their length can be adjusted as needed to meet different project requirements. They also facilitate on-site production of the adjustment platform, helping to shorten the construction period.

[0038] The working principle of the present invention is: the piston movement of the hydraulic jack pushes the sliding sleeve 21 up and down. Since one end of the sliding sleeve 21 is fixed to the lifting part 11 and the other end slides with the fixed part 12, the sliding sleeve 21 can drive the lifting part 11 to move up and down. The lifting part 11 moves up and down and drives the limit support plate 5 located thereon to move up and down. The lifting and lowering of the limit support plate 5 drives the transverse support rod 3 thereon to move up and down. The lifting degree of both sides of the transverse support rod 3 is used to control the elevation position and inclination angle of the embedded parts located thereon. Figure 3 As shown, if the lifting and lowering degrees on both sides of the transverse support rod 3 are inconsistent, since the transverse support rod 3 is directly placed on the limiting support plate 5, relative rotation will occur between the two, so that no interference will occur. Finally, the transverse support rod 3 and the limiting support plate 5 are welded and fixed to further ensure the support stability.

[0039] Example 2

[0040] This embodiment provides a method for installing large embedded parts for a steel dam gate, which is applied to the adjustment platform for installing large embedded parts for a steel dam gate described in Example 1. Taking the embedded parts for installing a hydraulic hoist support as an example, the weight of a single piece can reach 25 tons. The installation method includes the following steps:

[0041] S1. Pour the first layer of concrete at the pre-embedded location and install the dowels for fixing during pouring. The dowels can be 28mm diameter steel bars, and should be exposed 20 to 30cm above the concrete surface.

[0042] S2. After the first layer of concrete solidifies and reaches the required strength, the adjustment platform is constructed by loading and unloading materials at this location. The hydraulic gate hoist support is located at a high position and is heavy, making it difficult to adjust the embedded parts into position. The height of the adjustment platform reaches approximately 4m. After the adjustment platform is constructed according to the structure of Example 1, the horizontal support rod 3 is calibrated in both plane and elevation. After the calibration is complete, the bottom of the fixed portion 12 of the longitudinal support rod 1 is welded to the dowel rod.

[0043] S3. Hoist the embedded parts and place them on the transverse support rods 3. During this process, the workers can stay away from the work site and only need to place the embedded parts on the transverse support rods 3, which does not pose a safety hazard. During the hoisting process of the embedded parts, the position of the embedded parts is controlled by a guy rope. The plane position and elevation position of the embedded parts are then measured. The method for measuring and adjusting the plane position of the embedded parts includes the following steps: first, the center point of the embedded part is determined using the cross direction line method. Then, the degree of offset between the center point of the embedded part and the design center point is determined. According to the degree of offset, the embedded part is moved until the center point of the embedded part coincides with the design center point. The embedded parts can be moved by pushing the embedded parts using other engineering machinery. In addition, in order to ensure the accuracy of the plane position of individual embedded parts and the entire embedded parts, for example, the bottom shaft side span and mid-span embedded parts of the same batch as the hydraulic gate hoist support embedded parts are calibrated as a whole using steel wire. The plane position can be measured using a commercially available DT402L theodolite. The elevation position can be measured using a commercially available DSZ2 automatic level. Elevation adjustment involves using a 50t hydraulic jack to apply pressure to the sliding sleeve 21 to adjust the height of the lifting section 11. This adjustment is then performed on both sides of the adjustment platform, while using auxiliary measuring tools, until the elevation position of the embedded component meets the required accuracy. Furthermore, when adjusting the plane and elevation positions, the embedded components of the hydraulic hoist support, located 50m apart, must be calibrated simultaneously until the required accuracy is achieved before proceeding to the next step.

[0044] S4. After the embedded parts are positioned to the required accuracy, first weld the transverse support rods 3 to the multiple limit plates 5. Then, weld the transverse support rods 3 to the multiple limit plates 5. Finally, insert the spacer between the lifting part 11 and the fixed part 12 and weld it in place. After the spacer is welded and secured, remove the hydraulic jack. This hydraulic jack can be reused on other equipment or machinery.

[0045] After the embedded parts and adjustment platform are secured, secure the anchor bolts at the bottom of the embedded parts and reinforce them with multiple layers of longitudinal and transverse steel bars. Then, pour the second layer of concrete to the level of the embedded parts and wait for it to solidify. Once the second layer of concrete solidifies, complete the installation of the hydraulic hoist support embedded parts.

[0046] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. An adjustment platform for installing large embedded parts of steel dam gates, characterized in that: It includes two support units: each support unit includes: At least two longitudinal support rods (1), which include a lifting portion (11) and a fixed portion (12) that are not connected to each other; An adjusting mechanism (2) having a number corresponding to that of the longitudinal support rods (1) comprises: a sliding sleeve (21), a force plate (22), and a hydraulic jack; one end of the sliding sleeve (21) is fixedly connected to the lower half of the lifting part (11); the other end is slidably connected to the upper half of the fixed part (12); the force plate (22) is fixedly connected to the fixed part (12); the hydraulic jack is connected to the force plate (22), and its piston abuts against the bottom of the sliding sleeve (21) to adjust the height of the lifting part (11); A transverse support rod (3) is movably arranged on the top of the plurality of lifting parts (11) and is used for placing embedded parts; A plurality of pads are arranged between the lifting part (11) and the fixed part (12) and are used to support the lifting part (11) after the height is adjusted by the adjusting mechanism (2).

2. The adjustment platform for installing large embedded parts of steel dam gate according to claim 1, characterized in that: A U-shaped limiting support plate (5) is fixedly connected to the top of each lifting part (11); The openings of the position-limiting supporting plates (5) are arranged upward; and the transverse supporting rods (3) are arranged in the plurality of position-limiting supporting plates (5).

3. The adjustment platform for installing large embedded parts of steel dam gate according to claim 1, characterized in that: The adjustment platform for installing large embedded parts of a steel dam gate further comprises a plurality of lateral support members (4) connected to a lifting portion (11); the plurality of lateral support members (4) are distributed on both sides of a longitudinal support rod (1); each lateral support member (4) comprises a sleeve (41) and an L-shaped connecting rod (42); the length direction of the sleeve (41) is consistent with the length direction of the longitudinal support rod (1); one end of the connecting rod (42) is slidably connected to the sleeve (41), and the other end is connected to the lifting portion (11).

4. The adjustment platform for installing large embedded parts of steel dam gate according to claim 1, characterized in that: The longitudinal support rod (1) and the transverse support rod (3) are made of angle steel or I-steel.

5. A method for installing and constructing large embedded parts of a steel dam gate, characterized in that: The device is applied to the adjustment platform for installing large embedded parts of steel dam gates as claimed in any one of claims 1 to 4, and comprises the following steps: S1. Pour the first layer of concrete and set the dowel bars during pouring; S2. After the first layer of concrete solidifies, make an adjustment platform on it; After the adjustment platform is completed, the horizontal support rod (3) is calibrated in plane position and elevation position; After the calibration is completed, the bottom of the fixed portion (12) of the longitudinal support rod (1) is welded and fixed to the dowel; S3, hoisting the embedded parts and placing them on the transverse support rod (3), and measuring the plane position and elevation position of the embedded parts; Adjust the embedded parts that do not meet the requirements for plane position and elevation position accuracy; the elevation position adjustment includes: using a hydraulic jack to act on the sliding sleeve (21) to adjust the height of the lifting part (11), and then adjusting the lifting and lowering of both sides of the adjustment platform, while assisting the measuring tool until the elevation position of the embedded parts meets the accuracy requirements; S4, welding and fixing the transverse support rod (3) and the plurality of position limiting support plates (5); Welding and fixing the embedded parts and the transverse support rod (3); Insert the pad between the lifting part (11) and the fixed part (12) and weld them in place; after the pad is welded and fixed, remove the hydraulic jack; After the bottom anchor bolts of the embedded parts are connected, the second layer of concrete is poured until the elevation of the embedded parts; after the second layer of concrete solidifies, the installation of the large embedded parts is completed.

6. The installation and construction method of large embedded parts of steel dam gate according to claim 5, characterized in that: The length of the inserted reinforcement exposed from the first layer of concrete is greater than 20 cm.

7. The installation and construction method of large embedded parts of steel dam gate according to claim 5, characterized in that: In S3, the method for measuring and adjusting the plane position of the embedded part includes the following steps: first, using the cross direction line method to determine the center point of the embedded part; then, determining the degree of offset between the center point of the embedded part and the design center point; and moving the embedded part according to the degree of offset until the center point of the embedded part coincides with the design center point.

8. The installation and construction method of large embedded parts of steel dam gate according to claim 5, characterized in that: In S3, for multiple embedded parts in the same batch, the relative plane positions between the multiple embedded parts need to be calibrated.

9. The installation and construction method of large embedded parts of steel dam gate according to claim 5, characterized in that: In S3, during the hoisting process of the embedded parts, the position of the embedded parts is controlled by the guy rope; when the embedded parts are placed on the adjustment platform, the plane position and elevation position of multiple embedded parts in the same batch are calibrated simultaneously.

10. The installation and construction method of large embedded parts of steel dam gate according to claim 5, characterized in that: In S4, after the embedded parts are welded and fixed to the adjustment platform, multiple layers of longitudinal and transverse steel bars are inserted and reinforced at the bottom of the embedded parts.

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