Floating steel gate support with thin shell structure

Abstract

The invention discloses a floating steel gate support with a thin shell structure, which belongs to the technical field of water conservancy and hydropower engineering and is characterized in that a floating steel gate is formed by splicing a plurality of floating steel gate sections, and a panel, a web of a main cross beam and a longitudinal beam of each floating steel gate section are in transition with variable cross sections and sizes. The multiple supports are placed on the lower sides of the variable cross sections of the panels, the main cross beam webs and the longitudinal beams of the floating steel gate segments in a lifting mode correspondingly and used for guaranteeing stable transition of the variable cross sections and the sizes of the floating steel gate segments in the butt-assembling process. According to the floating steel gate with the thin shell structure, the floating steel gate with the thin shell structure is adopted for supporting, accurate transition of the size of the variable cross-section of the gate panel is guaranteed, the flatness of the variable cross-section panel is guaranteed, and therefore when the floating steel gate with the thin shell structure is filled with water, pressure borne by the floating steel gate with the thin shell structure is more uniform, and the buoyancy stability of the gate is higher.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy and hydropower engineering, and particularly relates to a floating steel gate support with a thin shell structure. Background Art

[0002] In the existing technology, many water transport engineering lock maintenance gates use thin-shell floating steel gates that use the buoyancy of water and their own gravity to adjust the height for lock maintenance. The gate panels, main crossbeam webs, and longitudinal beams all have variable cross-sections and dimensional transitions. The gates have many parts and numerous assembly processes, which are time-consuming and prone to errors. As a result, the overall structure has dimensional deviations, affecting the stability of the overall structure. Summary of the Invention

[0003] In order to solve the above problems, the present invention adopts the following technical solutions:

[0004] A floating steel gate support with a thin shell structure. The floating steel gate is composed of multiple floating steel gate segments spliced together. The panel, main crossbeam web, and longitudinal beam of each floating steel gate segment have variable cross-sections and dimensional transitions. Multiple supports are respectively placed on the lower side of the variable cross-sections of the panel, main crossbeam web, and longitudinal beam of the floating steel gate segment in a liftable manner to ensure stable transitions of variable cross-sections and dimensions of the floating steel gate segments during the assembly process.

[0005] Furthermore, the support includes:

[0006] a steel base, wherein the steel base is installed on the ground;

[0007] A screw lift fixing seat, wherein the screw lift fixing seat is arranged at the upper end of the steel base, and the end of the first end of the screw lift fixing seat abuts against the steel base, and the second end is arranged as a threaded rod;

[0008] The spiral lifter rotating sleeve has a first end at least partially sleeved on the outside of the threaded rod, an internal thread cooperated with the threaded rod is provided inside the spiral lifter rotating sleeve, and the second end of the spiral lifter rotating sleeve abuts against the panel of the floating steel gate segment, the web of the main crossbeam, and the variable cross-section of the longitudinal beam.

[0009] Furthermore, a through hole is provided on the second end side wall of the rotating sleeve of the spiral lifter, and a handle of the adjusting bolt lifter is detachably disposed in the through hole.

[0010] Furthermore, a drainage assembly is provided inside the floating steel gate, and the drainage assembly includes:

[0011] a water pipe, wherein a first end of the water pipe is connected to an external water source, and a second end of the water pipe extends to the bottom end of the interior of the floating steel gate;

[0012] a water pump, the water pump being arranged inside the floating steel gate, and the water inlet end of the water pump being in communication with the second end of the water pipe;

[0013] A drainage pipe, one end of which is arranged inside the floating steel gate and the other end is connected to the outside world.

[0014] Furthermore, water-stop structures are provided on both sides and the bottom surface of the floating steel gate.

[0015] Furthermore, guide structures are provided on both sides and the bottom surface of the floating steel gate.

[0016] Furthermore, the floating steel gate is welded into a main frame by multiple main cross beams, longitudinal beams and side columns, and the panels and arc-shaped guard plates are welded to the periphery of the frame to form a shell. The water-stop structure is arranged on the rear wing plate of the side column and the web of the cross beam at the bottom of the gate. The guide structure is a side wheel and a door bottom guide wheel. The side wheel is fixed to the web of the gate side column with bolts, and the door bottom guide wheel is welded to the front wing plate of the side column.

[0017] Furthermore, a pressure equalizing valve and a drain valve are provided inside the floating steel gate for filling and draining water inside the floating steel gate to adjust the deadweight of the floating steel gate. The drain valve is provided on the drain pipe.

[0018] Beneficial effects:

[0019] The present invention adopts a thin shell structure floating steel gate support to ensure the precise transition of the variable cross-section size of the gate panel and the flatness of the variable cross-section panel, thereby making the pressure on the thin shell structure floating steel gate more uniform when filled with water, and making the buoyancy stability of the gate higher.

[0020] The present invention is more cost-effective and has a shorter construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a floating steel gate support with a thin shell structure according to the present invention;

[0022] Figure 2 Schematic diagram of the support structure of the present invention;

[0023] Figure 3 This is a schematic plan view of the floating steel gate of the present invention;

[0024] Figure 4 This is a schematic elevation view of the floating steel gate of the present invention;

[0025] Figure 5 For the present invention Figure 4 Schematic diagram of the BB cross section;

[0026] Figure 6 This is a schematic diagram of the final assembly state during segmented manufacturing of the present invention;

[0027] Figure 7 This is a schematic diagram of the dispersed state during segmented manufacturing of the present invention;

[0028] Figure 8 This is a schematic diagram of the manufacturing process flow chart of the thin shell structure floating steel gate of the present invention;

[0029] Figure 9 This is a schematic diagram of the infield segmented manufacturing process of the present invention;

[0030] Figure 10 This is a schematic diagram of the manufacturing flow chart during field assembly of the present invention;

[0031] Among them, 1. Steel base; 2. Screw lift fixing seat; 3. Screw lift rotating sleeve; 4. Adjustment bolt lift handle; 5. Main beam; 6. Longitudinal beam; 7. Panel; 8. Guide structure; 9. Drainage assembly; 10. Side column. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention 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. Therefore, they cannot be understood as limitations on the present invention.

[0035] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Example 1

[0038] refer to Figures 1-10 A thin shell structure floating steel gate support. The floating steel gate is composed of multiple sections of floating steel gate segments. The panel 7, main crossbeam 5 web, and longitudinal beam 6 of each floating steel gate segment have variable cross-section and size transitions. Multiple supports can be placed on the lower side of the variable cross-section of the panel 7, main crossbeam 5 web, and longitudinal beam 6 of the floating steel gate segment in a liftable manner to ensure the stable transition of the variable cross-section and size of the floating steel gate segment during the assembly process.

[0039] In specific implementation, the thin-shell floating steel gate uses the buoyancy of water and its own gravity to adjust the height for ship lock maintenance. The panel, main crossbeam web and longitudinal beam of the floating steel gate have variable cross-sections and dimensional transitions. The stability of the variable cross-sections and dimensional transitions is ensured by support, thereby solving the errors that may occur due to various reasons during the installation of the gate.

[0040] During the specific implementation, since the gate has many parts and the assembly procedures are complicated and time-consuming, many errors will occur, which will cause dimensional deviations in the overall structure and affect the stability of the overall structure. This support is used as a frame as the base elevation for the manufacture of floating steel gates to solve the problem of multiple elevations of this floating steel gate. The panels, main crossbeam webs, and longitudinal beams all have variable cross-sections and sizes. This is more cost-effective and time-consuming than the traditional original process of assembling the bottom structure, middle trusses, and top structures separately before performing overall vertical assembly.

[0041] During specific implementation, multiple supports are provided, which can be lifted and lowered on the panels 7 of the floating steel gate segments, the webs of the main cross beams 5 and the lower sides of the variable cross-sections of the longitudinal beams 6.

[0042] In this embodiment, the support includes:

[0043] The steel base 1 is installed on the ground;

[0044] The screw lifter fixing seat 2 is arranged on the upper end of the steel base 1, and the first end of the screw lifter fixing seat 2 is in contact with the steel base 1, and the second end is set as a threaded rod;

[0045] The spiral lifter rotating sleeve 3, the first end of the spiral lifter rotating sleeve 3 is at least partially sleeved on the outside of the threaded rod, the interior of the spiral lifter rotating sleeve 3 is provided with an internal thread that cooperates with the threaded rod, and the second end of the spiral lifter rotating sleeve 3 is in contact with the panel of the floating steel gate segment, the web of the main beam or the variable cross-section of the longitudinal beam.

[0046] In this embodiment, a through hole is provided on the second end side wall of the spiral lifter rotating sleeve 3, and a detachable adjusting bolt lifter handle 4 is disposed in the through hole.

[0047] In specific implementation, by turning the screw lifter handle, the screw lifter rotating sleeve 3 is adjusted to rise relative to the screw lifter fixing seat 2 to achieve height adjustment, so that the support structure ensures the transition of the cross-section and size of the floating steel gate with a thin shell structure.

[0048] In this embodiment, a drainage assembly 9 is provided inside the floating steel gate, and the drainage assembly 9 includes:

[0049] A water pipe, wherein a first end of the water pipe is connected to an external water source, and a second end of the water pipe extends to the bottom end of the interior of the floating steel gate;

[0050] A water pump is arranged inside the floating steel gate, and a water inlet end of the water pump is connected to the second end of the water pipe;

[0051] Drain pipe, one end of the drain pipe is set inside the floating steel gate, and the other end is connected to the outside world.

[0052] In this embodiment, water-stop structures are provided on both sides and the bottom surface of the floating steel gate.

[0053] In this embodiment, guide structures 8 are provided on both sides and the bottom surface of the floating steel gate.

[0054] In this embodiment, the floating steel gate is welded into a main frame by multiple main crossbeams 5 and longitudinal beams 6 and side columns 10. The panel 7 and the arc-shaped guard plate are welded to the periphery of the frame to form a shell. The water-stop structure is arranged on the rear wing plate of the side column 10 and the web of the crossbeam at the bottom of the gate. The guide structure 8 consists of side wheels and door bottom guide wheels. The side wheels are fixed to the web of the gate side column 10 with bolts, and the door bottom guide wheels are welded to the front wing plate of the side column 10.

[0055] In this embodiment, a pressure equalizing valve and a drain valve are provided inside the floating steel gate for filling and draining water inside the floating steel gate to adjust the deadweight of the floating steel gate. The drain valve is provided on the drain pipe.

[0056] Directions:

[0057] Floating access door operation

[0058] Closing conditions: float the floating steel gate from the berthing area to the gate slot of the floating steel gate at the gate head, insert it obliquely into the gate, open the positioning pin on the top of the gate, insert the positioning pin on the top of the gate into the guide slot to position the floating steel gate; equip with a manual hoist, first install it on the gate slot hanging beam, then lower it and fasten it with the side column lifting ear, one person stands on the top of the gate at each end, responsible for making the surface of the water-stop rubber close to the stainless steel plate of the gate slot. As water is poured into the gate body, the hoist begins to bear force, and the person in charge of the hand hoist slowly loosens the chain to keep the two ends of the floating steel gate parallel and evenly sink until the floating steel gate is fully closed.

[0059] Turn on the power of the submersible pump outside the cabin to fill water into the floating steel gate cabin. As the water volume in the cabin increases, the gate slowly descends. When the gate is completely closed, cut off the power of the submersible pump outside the cabin.

[0060] Opening conditions: Close the upstream miter gate, open the downstream miter gate, and open the upper and lower gatehead working valves. Open the upper floating gate pressure-equalizing valve and pump water between the miter gate and the floating gate to the upstream maintenance water level. At this point, the water level in front of the upstream miter gate is at the upstream maintenance water level, and there is no water behind the gate. Wait until the water level on both sides of the upper floating gate gradually equalizes, then close the pressure-equalizing valve. Use a submersible pump to pump out the ballast water from the floating maintenance gate compartment. Open the gate top locating pins. Pull the upper floating gate out of the gateway and tow it to the mooring area. Connect the floating gate to the mooring post with a wire rope and moor it to the mooring post. After towing the upper floating gate to the mooring area, remove the wire rope, tie one end to the floating mooring eye on the mooring post, and pass the other end through the mooring eye on the floating gate. Slowly tighten the floating gate to bring it closer to the mooring post, and tighten the wire rope.

[0061] In specific implementation, the main technical requirements for the manufacture of thin shell structure floating steel gates are:

[0062] Allowance for door body shrinkage is reserved, and allowance is left for welding shrinkage in the door leaf and horizontal direction to ensure the correct door leaf dimensions after welding. Allowance is left on both sides of the panel. When the door leaf is welded and assembled as a whole, the edges of the panel are trimmed with a semi-automatic cutter to ensure the width of each door leaf is consistent.

[0063] Assembly welding requirements

[0064] To control welding deformation of the gate, the internal components are constructed as large units as possible before assembly to reduce welding workload during door assembly. The welds of the various components on the panel avoid crossing the same section. The floating access door, with its interior being a large, sealed container, requires a complex manufacturing process. To control welding deformation and ensure structural dimensional stability, an integral welding technique is employed. Even-numbered welders work symmetrically in shifts and at different times. Internal ventilation is maintained, and precautions against electric shock are implemented.

[0065] Taking the center line of the door leaf as the reference, mark the width dimension line of the door leaf panel, use a semi-automatic cutting machine to cut the side edge of the panel, mark the center line of the side water seal seat plate, and weld the water seal seat plate (reserve 3-5mm processing allowance) tightly to the door leaf. After passing the comprehensive inspection, the door leaf processing can be carried out.

[0066] Manufacturing technology of floating steel gate with thin shell structure

[0067] (1) Cutting control measures

[0068] ① Carry out computer modeling according to the structural design drawing, and automatically generate part drawings, nesting drawings and cutting procedures.

[0069] ②Use CNC flame cutting or CNC plasma cutting, and use sawing machine to cut the steel sections.

[0070] ③ After cutting, remove burrs and iron oxide from the edges and use a leveling machine to level the material in accordance with GB / T14173.

[0071] ④Dimension inspection to ensure it complies with the requirements of the cutting drawing.

[0072] ⑤ Ensure that the weld groove and chamfer line of the parts comply with the construction drawings and GB / T14173 regulations, and the roughness is ≤25μm;

[0073] ⑥ Mark the product drawing number and part number on each part to avoid confusion with other products during construction.

[0074] (2) Component manufacturing, door assembly and water-stop installation process

[0075] Component manufacturing: Based on the structural characteristics of this product, component manufacturing is divided into bottom plate component manufacturing, longitudinal bulkhead component manufacturing, transverse bulkhead component manufacturing, platform deck unit manufacturing, bottom waterstop seat manufacturing, guide roller manufacturing, railing manufacturing, and piping. Component manufacturing is completed in the workshop, including cutting, marking, assembly, welding, and after passing inspection, each section is manufactured. Section manufacturing: overall assembly

[0076] (3) Welding

[0077] Welding uses submerged arc automatic welding and CO2 gas shielded welding, and assembly positioning welding uses manual arc welding.

[0078] The welds on the door body welding structure are arranged according to the puzzle diagram. When drawing the puzzle diagram, pay attention to avoiding stress concentration areas and excessive concentration.

[0079] Parallel welds in the door structure should maintain a certain distance, the parallel distance between the butt joints should not be less than 80mm, and the vertical distance should not be less than 50mm.

[0080] After welding, the welding slag, spatter, and weld nodules shall be removed and the weld shall be polished clean and smooth. The appearance inspection of the weld shall be carried out according to the procedures of self-inspection, mutual inspection and special inspection. After the weld passes the appearance inspection, the internal quality inspection shall be carried out.

[0081] (4) Door manufacturing requirements

[0082] Each section is assembled as a whole (including inter-section connection devices and other components) and inspected in the factory. The dimensional deviations of each section, the dimensional deviations of the assembled whole, and the misalignment of the inter-section joints are in compliance with the construction drawings and the above-mentioned specifications.

[0083] In specific implementation, the manufacturing process flow chart of thin shell structure floating steel gate is shown in Figure 8 ;

[0084] In specific implementation, the manufacturing accuracy requirements for thin shell structure floating steel gates are as follows:

[0085] Serial number project Tolerance (mm) 1 Door thickness (b=4000mm) ±5.0 2 Door body height (H=7000mm) ±8.0 3 Door length (B=24200mm) ±15.0 4 Door horizontal straightness 2.0 5 Door longitudinal straightness 4.0 6 Local flatness of panel 4.0 7 Misalignment of diaphragm 3.0 8 Flatness of internode water stop 2.0 9 Side water stop plate flatness ≤2.0 10 Height of bottom water seal seat plate ±2.0

[0086] The portal structure is primarily welded together from beams, planar trusses, longitudinal beams, side columns, and panels, forming a thin shell. Due to transportation constraints, the portal is manufactured in sections. After completion, it is transported to a contracted facility for final assembly. After final assembly, it is launched and transported to the construction site by tugboat.

[0087] like Figure 6-Figure 7 , the infield is manufactured in sections, using a horizontal posture, positioning the panel on the frame, splicing the panels, marking the structural lines, the flow chart is as follows Figure 9 .

[0088] Field production process, field assembly, adopt the horizontal installation posture, segment one and segment two are positioned on the ground sample line, the middle truss is adapted and patched, the flow chart is as follows Figure 10 .

[0089] The positioning of Section 1 and Section 2 includes the main cross beam, longitudinal beam, side column, panel, water stop structure, and supporting positioning structure; the middle column is embedded in the truss structure.

[0090] Watertightness test of gate

[0091] The inspection gate is in a floating state during operation. In addition to the routine water tightness test before leaving the factory, it must undergo a water pressure test. During the test, the water pressure test is strictly carried out according to the pressure test steps and pressure stabilization time, and the test form is filled in in detail. During the test, observe and inspect for water seepage, any visible abnormal deformation, and any abnormal noise. Detailed records of water leakage and abnormal deformation locations are also kept.

[0092] (1) Self-floating test: Check whether the gate can float freely in water.

[0093] (2) Air tightness test: Pressurize the sealed chamber to 0.05 MPa through the pressure reducing valve and maintain the pressure for 24 hours. After checking that there is no significant pressure drop in the chamber, reduce the pressure to 0.02 MPa. Apply soapy water and observe for bubbling. Perform a leak test. No leakage is allowed in the sealed chamber. After the test, seal the test hole.

[0094] (3) The floating gate of the ship lock is equipped with a submersible pump for irrigation and drainage to adjust the deadweight of the gate.

[0095] When not in maintenance operation, the floating steel gate is stored in the gate warehouse. The floating mooring ring adopts a closed ring structure, which is placed on the floating mooring column and can float up and down with the water level changes.

[0096] In specific implementation, the thin-shell floating steel gate area is more flexible than the conventional fixed maintenance gate. When the floating steel gate is not in use, it can be stored in the gate warehouse at the shore. When the ship lock is repaired, it can be towed to the gate slot by a boat. A water tank is set inside the thin-shell floating steel gate, and the water filling (pumping) and drainage system is used to adjust the water volume inside the thin-shell floating maintenance gate, that is, (adjusting the gate's own weight) to ensure the floating height of the gate. When draining, the drainage pump is used to drain the water to float the device. The entire floating and sinking and posture control are automatically completed by the control device, which facilitates the inspection of the ship lock. Since the gate can be towed by a boat, multiple ship locks and nearby waterways can be shared, thereby improving labor productivity and the interchangeability and convenience of on-site use and maintenance.

[0097] The use of a thin shell structure floating steel gate support ensures that the variable cross-section of the gate panel is precisely transitioned and the variable cross-section panel is flat, so that the pressure on the thin shell structure floating steel gate when filled with water is more uniform, making the buoyancy stability of the gate higher.

[0098] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A thin shell structure floating steel gate support, wherein the floating steel gate is formed by splicing multiple floating steel gate sections, and the panels, main crossbeam webs, and longitudinal beams of each floating steel gate section have variable cross-sections and size transitions, characterized in that: The multiple supports are respectively placed on the lower side of the variable cross-section of the panel, main crossbeam web and longitudinal beam of the floating steel gate segment in a liftable manner to ensure the stable transition of the variable cross-section and size of the floating steel gate segment during the installation process.

2. A thin shell structure floating steel gate support according to claim 1, characterized in that: The support includes: a steel base, wherein the steel base is installed on the ground; A screw lift fixing seat, wherein the screw lift fixing seat is arranged at the upper end of the steel base, and the end of the first end of the screw lift fixing seat abuts against the steel base, and the second end is arranged as a threaded rod; The spiral lifter rotating sleeve has a first end at least partially sleeved on the outside of the threaded rod, an internal thread cooperated with the threaded rod is provided inside the spiral lifter rotating sleeve, and the second end of the spiral lifter rotating sleeve abuts against the panel of the floating steel gate segment, the web of the main crossbeam, and the variable cross-section of the longitudinal beam.

3. The thin shell structure floating steel gate support according to claim 2, characterized in that: A through hole is provided on the second end side wall of the spiral lifter rotating sleeve, and a detachable adjusting bolt lifter handle is disposed in the through hole.

4. The thin shell structure floating steel gate support according to claim 1, characterized in that: A drainage assembly is provided inside the floating steel gate, and the drainage assembly includes: a water pipe, wherein a first end of the water pipe is connected to an external water source, and a second end of the water pipe extends to the bottom end of the interior of the floating steel gate; a water pump, the water pump being arranged inside the floating steel gate, and the water inlet end of the water pump being in communication with the second end of the water pipe; A drainage pipe, one end of which is arranged inside the floating steel gate and the other end is connected to the outside world.

5. The thin shell structure floating steel gate support according to claim 1, characterized in that: Water-stop structures are provided on both sides and the bottom surface of the floating steel gate.

6. The thin shell structure floating steel gate support according to claim 5, characterized in that: Both sides and the bottom surface of the floating steel gate are provided with guide structures.

7. The thin shell structure floating steel gate support according to claim 6, characterized in that: The floating steel gate is welded into a main frame by multiple main crossbeams, longitudinal beams and side columns. The panels and arc-shaped guard plates are welded to the periphery of the frame to form a shell. The water-stop structure is arranged on the rear wing plate of the side column and the web of the crossbeam at the bottom of the gate. The guide structure is a side wheel and a door bottom guide wheel. The side wheel is fixed to the web of the gate side column with bolts, and the door bottom guide wheel is welded to the front wing plate of the side column.

8. The thin shell structure floating steel gate support according to claim 4, characterized in that: The floating steel gate is provided with a pressure equalizing valve and a drain valve inside for realizing water filling and drainage inside the floating steel gate to adjust the deadweight of the floating steel gate. The drain valve is provided on the drain pipe.

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