Dumping type dock gate mounting structure and mounting method

Abstract

The invention relates to the field of dock gate mounting equipment, and particularly discloses a dumping type dock gate mounting structure and a mounting method.The mounting structure is characterized in that wall sealing structures are arranged at black ridges of a dock gate, winches, first pulley blocks and winches are arranged on shores on the left side and the right side, and the dumping type dock gate is pulled to be subjected to posture adjustment on the sea surface; a trunnion at the bottom of the dumping type dock gate is connected into the hinged support bearing seat, so that the sealing performance of the dock gate is checked after the dock gate is installed. The horizontal precast block and the vertical precast block are installed and adjusted correspondingly, and the precision of the embedded part is improved; meanwhile, the dumping type dock gate is transported from the sea surface, the posture of the dumping type dock gate is adjusted through a winch, a first pulley block and a winch, the dock gate is smoothly installed on a hinged support bearing seat, and overall installation is completed; the device is not limited by the size of the toppling dock gate, the installation precision is high, and the construction efficiency is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of marine engineering equipment installation, and in particular to a dumping type dock door installation structure and an installation method. Background Art

[0002] As a basic equipment of modern shipyard docks, dock gates fully guarantee the quality and progress of shipbuilding. Dock gates mainly play the role of water blocking in dry docks, providing a land-like working environment for shipbuilding in docks, and facilitating the entry of built ships into the water. According to the type, they can be divided into pontoon dock gates, horizontal pull dock gates, plug-in dock gates, and lying dock gates.

[0003] The installation of dock doors mainly includes two aspects: embedded parts installation and door body installation. According to the traditional conventional methods, it is difficult to implement the embedded parts installation accuracy and door body transfer and placement method of super large dock doors. Now the sub-items are explained: The installation of embedded parts of dock doors is the premise and basic condition for the installation of dock doors, and its installation accuracy directly affects the installation and operation of dock doors. In the traditional installation and construction of embedded parts of dumping dock doors, the installation of embedded parts is often installed and quality controlled according to the allowable tolerance of the design drawing size. However, since the dock door is an ultra-large steel structure product, its manufacturing error control is difficult, and the measurement under a large span is also affected by the thermal expansion and contraction caused by temperature changes. As a result, after the dock door is transported to the site for installation, the sealing surface of the embedded parts and the dock door is poorly matched or does not meet the matching requirements, resulting in major quality problems such as water leakage of the dock door or abnormal opening and closing of the dock door.

[0004] In addition, in the traditional installation and construction of the dumping dock door, due to its small size and light weight, the traditional transportation and installation method usually adopts land transportation to the installation location and uses a crane or floating crane to lift it into place for installation. The traditional transportation and installation method can be implemented for small and light dumping dock doors, but large dumping dock doors are huge in size and often weigh thousands of tons, which exceeds the lifting weight of conventional cranes and floating cranes and the carrying weight of the dock. The traditional installation and construction method is difficult to implement and has poor economic performance. Summary of the invention

[0005] The purpose of the present invention is to provide a tilting dock door installation structure and installation method to solve the problem that during the installation of a large tilting dock door, the installation accuracy of embedded parts is poor, causing the dock door to leak or open and close abnormally, and the tilting dock door is too large to be applied by traditional lifting methods.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a dumping type dock door installation structure, including a left installation structure and a right installation structure; The left installation structure includes a wall sealing structure, a hinged bearing seat, a winch, a first pulley block and a plurality of winches; the wall sealing structure is installed on the left side of the dock door; the hinged bearing seat is arranged at the bottom of the wall sealing structure, the first pulley block is arranged at the upper part of the wall sealing structure, the winch is arranged on the left side of the first pulley block, and drives the first pulley block to rotate; the winch is arranged on the side bank of the dock; The right installation structure is the same as the left installation structure and is arranged on the right side of the dock door; The top of the dumping dock door is connected to the first pulley block, the middle is provided with a lifting lug matching the winch, and the bottom ear shaft is hinged to the hinge bearing seat.

[0007] As a further technical solution of the above scheme, the wall sealing structure includes horizontal precast blocks, vertical precast blocks, first-phase concrete, horizontal embedded parts, and second-phase concrete; the first-phase concrete is L-shaped and arranged on the left side of the dock door; the horizontal embedded parts include steel piers, wedge plates, shrinkage-free concrete piers and anchor bolts; the bottom of the steel pier is connected to the upper part of the first-phase concrete, and the top supports the bottom of the horizontal precast block through the wedge plate; the shrinkage-free concrete pier is arranged between the horizontal precast block and the first-phase concrete; the anchor bolts pass through the anchor bolt holes on the horizontal precast block and are anchored to the first-phase concrete; the second-phase concrete is L-shaped and arranged on the inner side of the first-phase concrete; the horizontal precast block is arranged on the upper part of the horizontal edge of the second-phase concrete, and the vertical precast block is arranged on the right part of the vertical edge of the second-phase concrete.

[0008] As a further technical solution of the above scheme, the vertical prefabricated block includes multiple vertical prefabricated units, and expansion joint epoxy grouting materials are provided between adjacent vertical prefabricated units; the expansion joint epoxy grouting materials are arranged horizontally, and chemical anchor bars are provided on the left and right sides for fixing.

[0009] As a further technical solution of the above solution, the horizontal prefabricated block includes a plurality of horizontal prefabricated units, and expansion joint epoxy grouting material is provided between adjacent horizontal prefabricated units.

[0010] As a further technical solution of the above solution, a second pulley block is provided on the top of the dumping dock door, and the second pulley block is connected to the first pulley block through a steel wire rope.

[0011] A method for installing a dumping dock door, using the dumping dock door installation structure, comprises the following steps: Step S1, setting a wall sealing structure at the dock door, and setting a winch, a first pulley block and a hoist on the shore; filling the dock with water and excavating a cofferdam in front of the dock entrance, so that the water level in the dock is consistent with the sea level; Step S2, using a tugboat or other power traction equipment to tow and float the dumping dock door from the temporary berthing position to the ocean side in front of the dock entrance; Step S3, adjusting the winches and the hauling ropes of the left and right mounting structures according to the position of the dumping dock door, the winches are respectively connected to the lifting ears at the left and right ends of the dumping dock door, and auxiliary traction movement and position adjustment are performed; Step S4, starting different winches to adjust the position of the dumping dock door lying flat and floating on the sea surface, so that the trunnions at both ends of its bottom face the hinged bearing seat at the dock sill position on the seabed; Step S5, arranging a water injection pump and a water injection pipe to inject water into the water tanks of each compartment of the dumping dock door to make its posture gradually change from lying flat to tilted upright, and the ear shafts on the left and right sides gradually sink and slide into the hinge bearing seat to connect; Step S6, connect the first pulley block to the top of the dumping dock door through a wire rope, start the winch to drive the first pulley block to rotate the dumping dock door to complete the opening and closing, drain the water in the dock and check the sealing performance of the dumping dock door.

[0012] As a further technical solution of the above solution, it also includes horizontal prefabricated blocks, vertical prefabricated blocks, first-phase concrete, horizontal embedded parts, second-phase concrete, steel piers, wedge plates, and non-shrinkage concrete piers. In step S1, the wall sealing structure is provided including the following steps: Step S11, pre-embedding stainless steel anchor bolts in the first phase of concrete according to the anchor bolt holes reserved on the horizontal prefabricated blocks and the vertical prefabricated blocks; Step S12, arranging the steel buttresses and wedge plates according to the length of a single prefabricated unit, and adjusting them so that one prefabricated unit supports two groups of steel buttresses and wedge plates; Step S13, based on the sealing surface axis, a reference bracket and a reference line for measurement and adjustment are arranged at a position offset from the sealing surface by a certain distance, and the reference line adopts a piano line with good toughness and strength; Step S14, hoisting and placing the horizontal prefabricated unit on the wedge plate, adjusting the axis position of the sealing surface with the reference line, and adjusting the elevation of the horizontal prefabricated unit with the center point of the sealing surface; Step S15, fixing the horizontal prefabricated units with the adjusted sealing surface axis and elevation using anchor bolts, and adjusting and fixing each block until the sealing adjustment of all horizontal prefabricated blocks is completed; Step S16, pouring non-shrinkage concrete piers at the bottom of each horizontal prefabricated unit, arranging two piers for support in each horizontal prefabricated unit, taking out the steel piers and wedge plates, and then pouring the prefabricated block cushion concrete, and then horizontally grouting the gaps between the prefabricated units with epoxy grouting materials, and finally pouring the second phase of concrete; Step S17, after the horizontal prefabricated blocks are installed and concrete is poured, the supporting steel bars of the vertical prefabricated blocks are supported by the embedding method at the connection positions of the horizontal prefabricated blocks and the vertical prefabricated blocks on both sides; Step S18, hoist the vertical prefabricated block and place it on the supporting steel bars, bind it with iron wire and tie bolts to prevent it from falling, align the sealing surface of the vertical prefabricated block with the sealing surface of the horizontal prefabricated block, weld and fix them with stainless steel plates, and then use the plumb bob method to measure and adjust the verticality of the sealing surface; Step S19, after the verticality of the vertical prefabricated block is adjusted, epoxy grouting is firstly poured in the gap between the vertical prefabricated units, and then the second phase of concrete pouring is performed; after the pouring is completed, the same method is used to install, adjust and pour the next vertical prefabricated unit.

[0013] Compared with the prior art, the present invention has the following advantages and beneficial effects: the present invention installs and adjusts the horizontal prefabricated blocks and the vertical prefabricated blocks respectively, thereby improving the accuracy of the embedded parts; at the same time, the tipping dock door is transported from the sea surface, and the posture of the tipping dock door is adjusted by the winch, the first pulley block and the hoist, so that the dock door can be smoothly installed on the hinged bearing seat to complete the overall installation; the device is not limited by the size of the tipping dock door, and has high installation accuracy, thereby ensuring construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the layout of the left installation structure and the right installation structure.

[0015] Figure 2 This is a schematic diagram of the installation of the winch and the first pulley block.

[0016] Figure 3 It is a schematic diagram of the connection relationship between the dock door and the hinged bearing seat.

[0017] Figure 4 Schematic diagram of the connection between the horizontal precast blocks and the first phase of concrete.

[0018] Figure 5 Schematic diagram of the baseline layout of horizontal precast blocks.

[0019] Figure 6 A top view diagram of the baseline layout of the horizontal precast blocks.

[0020] Figure 7 This is a schematic diagram of the front connection between the horizontal prefabricated block and the vertical prefabricated block.

[0021] Figure 8 It is a schematic diagram of the side connection relationship between the horizontal prefabricated block and the vertical prefabricated block.

[0022] Fig. 9 This is an enlarged schematic diagram of the connection between the horizontal prefabricated block and the vertical prefabricated block.

[0023] Fig.10 Schematic diagram of the opening and closing of the dumping dock door.

[0024] Fig.11 It is in the floating state when the inverted dock door is floating and there is no water in each compartment.

[0025] Fig.12 Procedure 1 for installing the dumping dock door: Floating state when the S and T compartments are filled with water.

[0026] Fig.13 Procedure 2 for installation of dump dock door: floating state when E1 and E2 compartments are filled with water.

[0027] Fig.14 Procedure 3 for installing the dumping dock door: Floating state when the K, L and R compartments are filled with water.

[0028] Fig.15 Procedure 4 for installation of the dumping dock door: Floating state when the U compartment is filled with water.

[0029] Fig.16 Procedure 5 for installing the tilting dock door: Use cable traction to adjust the movement state of the dock door.

[0030] Fig.17 Installation procedure 6 for the dumping dock door: U-compartment continues to be filled with water and the trunnion is in place.

[0031] Fig.18 Procedure 7 for installation of the dumping dock door: Wire rope installation and dock door closed status diagram.

[0032] Fig.19 This is a schematic diagram of the overall layout of auxiliary equipment and site during the installation of the dumping dock door.

[0033] Fig. 20 This is a side structural diagram of the installation process of the dumping dock door.

[0034] Fig.21 Schematic diagram of the height of the vertical pulley and inclined pulley base plate of the first pulley group.

[0035] Fig. 22 This is a schematic diagram of the projection method position of the inclined pulley base plate of the first pulley group.

[0036] The meanings of the numbers in the figure are as follows: left installation structure-1; wall sealing structure-11; horizontal precast block-111; vertical precast block-112; first phase concrete-113; anchor bolt-114; second phase concrete-115; steel pier-116; wedge plate-117; non-shrinkage concrete pier-118; hinged bearing seat-12; winch-13; first pulley block-14; hoist-15; right installation structure-2; tilting dock door-3; lifting ear-31; ear shaft-32; second pulley block-33; expansion joint epoxy grouting material-4; chemical anchoring-5; reference bracket-6; reference line-7; tugboat-8; depth gauge-9; sealing plate-10; floating crane-101. DETAILED DESCRIPTION

[0037] The technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention, so as to have a further understanding of the concept of the present invention, the technical problems solved, the technical features constituting the technical scheme and the technical effects brought about.

[0038] like Figure 1-Figure 20 As shown, a dumping type installation structure and installation method, the specific operation is as follows: 1) Prepare the prefabrication platform and the tooling to ensure the flatness of the sealing surface at the prefabrication site, prepare the stainless steel bars and bend them into shape, prepare the square stones and cement that meets the standard requirements. Prepare the stainless steel plate and weld the stainless steel bars as anchor bars on the back of the sealing surface.

[0039] 2) Arrange the stainless steel plate on the prefabricated platform, tie the stainless steel bars to form a steel mesh, then support the formwork and cast the square stone concrete, and wait for the prefabricated blocks to reach the curing period before being transported to the dock installation site.

[0040] 3) After the horizontal and vertical prefabricated blocks are transported to the site, the horizontal prefabricated blocks are installed first. Before installation, two sets of steel piers are arranged for each section of the horizontal prefabricated blocks according to the length of the horizontal prefabricated blocks, and wedge plates for adjusting the elevation and level are arranged on the steel piers.

[0041] 4) Use the total station to measure and locate the axis of the horizontal prefabricated block sealing surface, and arrange the fixing frame of the reference piano wire at a certain distance outside the axis of the horizontal prefabricated block sealing surface. After the fixing frame is fixed firmly, use the total station to measure the distance from the axis of the prefabricated block sealing surface on the crossbeam of the fixing frame, and mark the notch with a sample punch or saw blade. Then tie the reference piano wire to the notch position of the crossbeam of the fixing frame. The fixing frame is fixed at both ends of the entire horizontal sealing surface arrangement position. If the span is too large, several fixing frames can be added in the middle position, and the reference piano wire is taut between the two fixing frames.

[0042] 5) Use lifting equipment to insert the horizontal prefabricated blocks into the anchor bolts and hoist them onto the wedge plate. Mark the center line of the width on the stainless steel plate. Align the bottom of the depth gauge with the center line and measure the height with a precision level. Use the wedge plate to adjust the height of the horizontal prefabricated blocks to make them consistent, including the height of both ends of a single horizontal prefabricated block and the height of each horizontal prefabricated block.

[0043] 6) After the height of the horizontal precast blocks is adjusted to be consistent and meets the design elevation, adjust the gap between adjacent horizontal precast blocks to meet the requirements.

[0044] 7) Measure the distance between the sealing surface of each horizontal sealing prefabricated block and the reference piano line based on the reference piano line, and adjust the distances between the two ends of each horizontal prefabricated block and the upper and lower measuring points to be consistent.

[0045] 8) Check again that the center height of the sealing surface of the horizontal prefabricated blocks is consistent, the gap between adjacent horizontal prefabricated blocks meets the requirements, and the distance from the reference piano line is consistent, then tighten the nuts of the anchor bolts to fix them.

[0046] 9) Pour shrinkage-free concrete piers at the bottom of the adjusted and fixed horizontal precast blocks. Each horizontal precast block is equipped with a shrinkage-free concrete pier at both ends to firmly support the horizontal precast blocks. Then take out the wedge plate and steel piers, and pour shrinkage-free concrete on the bottom of the horizontal precast blocks as a whole. After the shrinkage-free concrete reaches the curing period, the gaps between the horizontal precast blocks are filled with expansion joint epoxy grouting material. Finally, pour concrete on the back of the horizontal precast blocks. The second phase concrete is L-shaped as a whole, but it should be poured in layers. First, pour the horizontal part of the bottom of the horizontal precast sealing surface, and then pour the vertical part of its side to make it a whole with the first phase concrete.

[0047] 10) After the second phase of concrete pouring of the horizontal prefabricated sealing surface is completed, select an appropriate temperature value time period to use a total station to measure the overall flatness of the sealing surface, calculate the average value of the horizontal coordinates of the measured values, and calculate and determine the distance L between the center of the embedded hinged bearing seat and the horizontal prefabricated sealing surface based on the average value of the measured flatness of the dock door's ear axis from the sealing structure surface. Determine the horizontal coordinate position of the hinged bearing seat based on the measured average value of the horizontal prefabricated sealing surface; determine the longitudinal coordinate position of the hinged bearing seat based on the measured value S2 of the center span of the ear axis at both ends of the dock door; determine the height difference between the dock door's ear axis and the sealing structure surface. The height difference is calculated, and then the installation elevation of the hinged bearing seat is calculated according to the center elevation of the horizontal prefabricated sealing surface that has been installed and poured on site; then the total station is used to measure and adjust the various parameters of the hinged bearing seat; after the span S2, the distance L from the horizontal prefabricated sealing surface and the elevation are adjusted and meet the deviation requirements of the calculated values, the vertical part of the second phase concrete is poured, and the pouring sequence is: first, grouting and pouring of the reserved holes for the anchor bolts, then tightening the nuts of the anchor bolts, and finally installing the guide plate on the side of the hinged bearing seat and pouring of the overall second phase; the pouring bearing is monitored throughout the grouting and pouring process.

[0048] 11) After the hinged bearing seat is installed and the second phase of concrete pouring and fixing is completed, the installation of the vertical prefabricated sealing surface of the dock is started. First, according to the center span of the sealing surface of the vertical prefabricated blocks at both ends, the total station is used to locate its position on the horizontal prefabricated block, and then holes are drilled at this position to adjust the chemical anchor bars for the vertical expansion joint support. The anchor bar height is consistent with the expansion joint gap. Then the vertical prefabricated block is hoisted onto the vertical expansion joint support and adjusted chemical anchor bars. During hoisting, the stainless steel sealing plate is aligned with the stainless steel sealing plate on the horizontal prefabricated block. After checking that there is no misalignment or offset with tools such as a ruler, prepare to adjust the verticality of the stainless steel sealing plate.

[0049] 12) Before adjusting the verticality, use the scaffolding support rods and tensioning screws to fix the vertical prefabricated blocks. Figure 6 As shown, the scaffolding support rod thread is rotated to support and tighten the screw rod in conjunction with the sling to pull the vertical prefabricated block. The support and pulling are arranged at right angles, so that the vertical prefabricated block can be well fixed.

[0050] 13) Start to adjust the verticality, hang a plumb line from the top of the vertical prefabricated block to the bottom, measure the distance b between the top stainless steel sealing plate and the plumb line, and the distance a between the bottom stainless steel sealing plate and the plumb line, check the deviation of the two measured distances, if the top distance is greater than the bottom distance, it means that the top of the vertical prefabricated block is leaning forward, then slowly loosen the scaffolding support rod, and tighten the tensioning screw at the same time, until the distance between the stainless steel sealing plate and the plumb line is consistent, if the top distance is less than the bottom distance, it means that the top of the vertical prefabricated block is leaning back, then continue to tighten the scaffolding support rod and loosen the tensioning screw at the same time, until the distance between the stainless steel sealing plate and the plumb line is consistent, thus completing the verticality adjustment of the front and rear directions of the sealing surface. Figure 7 shown.

[0051] 14) Next, adjust the lateral verticality of the sealing surface. At this time, use the side of the stainless steel sealing plate as the measuring point and adjust the lateral verticality of the sealing surface according to the measurement and adjustment method in the front and rear directions.

[0052] 15) After the front-to-back direction and lateral verticality are adjusted, check again the misalignment and offset of the stainless steel sealing plates of the horizontal and vertical prefabricated blocks. If misalignment or offset occurs, use a jack to make fine adjustments until there is no misalignment or offset, and then use stainless steel ribs to weld them together.

[0053] 16) Measure the front-to-back and lateral verticality of the vertical precast blocks again. If there is a slight deviation, continue to make fine adjustments. If the verticality meets the requirements, do not turn the scaffolding support rods or tighten the screws. At this time, use the U-shaped clips to adjust the steel bars buried in the first phase of concrete and the stainless steel bars of the vertical precast blocks and tighten the U-shaped clip bolts. The number of U-shaped clips to be installed depends on the site conditions to ensure that there are steel bars connected at the top, middle and bottom.

[0054] 17) After ensuring that the vertical precast blocks are firmly fixed and will not move, start pouring epoxy grouting material into the gaps between the precast blocks. Make sure that the gaps are filled with epoxy grouting material for expansion joints.

[0055] 18) After the epoxy grouting material of the expansion joint reaches the curing period, start pouring concrete. At this time, be careful not to pour the concrete to the top where the scaffolding struts and tensioning screws are arranged, and leave a small height section to ensure the removal of the scaffolding struts and tensioning screws; wait for the concrete to reach the curing period, then remove the scaffolding struts and tensioning screws, and use a handheld cutting machine to cut off the stainless steel rib plate. Be careful not to cut into the stainless steel sealing plate base material when cutting. After cutting, grind the welding points to make them smooth and flat, and then prepare for the installation and adjustment of the next section of vertical prefabricated blocks.

[0056] 19) The installation and adjustment of the vertical precast blocks, the concrete pouring method and steps in the next section are the same as in the previous section until all the vertical precast blocks are installed and concrete poured.

[0057] 20) If Fig.21 and Fig. 22 As shown in the figure, after the vertical prefabricated sealing surface is installed and poured, the vertical pulley and the inclined pulley on the shore are installed. Before the installation, the height of the pulley groove through which the wire rope passes is used as the reference. First, the distance L1 from the center of the vertical pulley to the center of the inclined pulley base plate is determined by projection method on drawing software such as AutoCAD, and the height H1 and H2 from the top and bottom ends of the inclined surface of the inclined pulley base plate to the reference pulley groove are determined to ensure the accuracy of the inclination and height of the inclined pulley base plate during installation. The height H3 of the vertical pulley base plate from the reference pulley groove is determined; then, according to the span of the pulleys at both ends of the dock door, the height of the vertical pulley base plate from the reference pulley groove is determined. Determine the span S3 of the pulleys on both sides of the shore based on the measured value S3; after all values ​​are determined, start installing the foundation plates of the vertical pulley and the inclined pulley on the shore; use the total station to locate the coordinate position and measure and adjust the relative heights, adjust the height and position coordinate points of the top and bottom ends of the inclined pulley foundation plate from the reference pulley groove elevation point, adjust the height and position coordinate points of the vertical pulley foundation plate from the reference pulley groove elevation point, and after all measured values ​​meet the deviation requirements, install and fix the anchor bolts in the screw holes of the foundation plate and fix them firmly, then start pouring the second phase of concrete, and monitor the entire pouring process.

[0058] 21) After the installation and pouring of the vertical pulley and inclined pulley foundation plate and anchor bolts on the shore are completed, the vertical pulley and inclined pulley on the shore are fixed to the foundation plate with anchor bolts, thus completing the installation of all embedded parts of the dock door.

[0059] 22) Check and remove garbage and debris in the dry dock, check the flatness of the sealing surface of the dock door at the dock entrance, as well as the installation span, height and distance relative to the sealing surface of the embedded hinge bearing seat. After meeting the requirements for the installation of the dock door, start using a large water injection pump to inject water into the dock. The amount of water injected must ensure that its horizontal surface is consistent with the sea level outside the cofferdam.

[0060] 23) After the dry dock is filled with water and aligned with the sea level, the cofferdam excavation begins. The excavation width and depth of the cofferdam shall be determined based on the floating state of the dock gate when no water is injected into the cabin, and shall meet the conditions for floating entry of the dock gate. The cofferdam excavation shall be carried out by a suction dredger, which can suck sand and gravel into the cabin and transport them away during excavation, ensuring that no silt and impurities will accumulate at the cofferdam position and the dock sill position, which may affect the installation of the dock gate.

[0061] 24) After the cofferdam is excavated, two tugboats are used to tie and connect the dock gate in front and behind at the temporary berthing point. The dock gate is towed through the gap in the cofferdam by the power of the tugboats and transported to the installation position at the dry dock. The tugboat and the dock gate should be tied at the top of the dock gate to facilitate the initial adjustment of the position of the dock gate bottom trunnion relative to the underwater hinge bearing seat after the dock gate enters the cofferdam.

[0062] 25) While the dock gate is floating, winches and traction cables are arranged on both sides of the dry dock, with at least 4 winches arranged to meet the requirements of all-round precise position adjustment of the dock gate at both ends and up and down. After the dock gate enters the cofferdam, a floating crane with a cable winder is arranged on the ocean side as a brake tension cable for dock gate adjustment, providing braking and adjustment of the dock gate during the traction process; the floating crane is fixed by inserting fixed piles and anchors on the seabed, and a winch can also be arranged on the cofferdam as the power of the brake cable; after the winch and floating crane are arranged, the traction cable and brake cable are tied to the upper and lower lifting ears on both sides of the dock gate.

[0063] 26) After the preparation work is completed, check the working conditions of the multiple water injection pumps arranged on the floating crane, connect the pumps to the water injection ports of each compartment on the tilting dock door with water injection pipes, and prepare for water injection and ballast work; valves should be installed at the water injection ports of each compartment to facilitate closing the water injection ports at any time; the blocking plates of the exhaust pipes of each compartment should be removed to facilitate timely discharge of air in each compartment during water injection, and the exhaust pipe outlet is set at the top of the tilting dock door to prevent seawater from submerging the exhaust pipe outlet during water injection and ballast.

[0064] 27) A gravity angle indicator is installed and fixed on the top of the dock side panel of the dock gate. The base of the gravity angle indicator is close to or parallel to the panel surface, so as to accurately determine the inclination angle of the dock gate during water filling and ballasting, and determine and adjust the water filling conditions of each compartment according to the inclination angle.

[0065] 28) After everything is ready, the water filling and installation procedure of the dock door can be started; Fig.11 As shown, at this time, there is no water in the compartments of the dock door, the top of the dock door sinks, and the bottom trunnion end rises, with an angle of about 11°. At this time, the tidal openings of the E1 and E2 compartments on the ocean side are sealed with a plugging plate.

[0066] 29) Installation procedure 1: Fig.12 As shown in FIG. 1 , 100% seawater is injected into the compartments S and T of the dumping dock door using a water injection pump. Fig.14 As shown, since the compartments S and T are located at the two ends of the bottom of the dock door, after being filled with water, the weight of the bottom of the dumping dock door becomes larger, and the dock door is affected by gravity, causing the bottom ear shaft end to sink and the top to rise; the angle is about 5°.

[0067] 30) Installation procedure 2: Fig.13As shown in Figure 2, 40% of seawater needs to be injected into the compartments E1 and E2. Fig.14 As shown, since compartments E1 and E2 are at the top end of the tipping dock gate, after injecting 40% of seawater, the top and bottom of the dock gate remain level, creating a gravity balance point for the subsequent filling of the middle compartment and the bottom compartment with water.

[0068] 31) Installation procedure 3: Fig.14 As shown, 100% seawater is then injected into compartments K, L, and R. Figure 4 The K, L and R cabins shown are in the middle section of the tipping dock door; affected by gravity, the top of the dock door sinks slightly, and the bottom rises slightly, with an angle of about 3°; at this time, the water ballasting and gravity balance of the middle and upper cabins are completed, and the posture of the dock door can be adjusted at a large angle from lying flat to an upright state with an angle.

[0069] 32) Installation procedure 4: Fig.15 As shown, inject 91% of seawater into compartment No. U. At this time, closely observe the pointer position of the gravity angle indicator and stop injecting water immediately when its inclination reaches about 50°. At this time, the dock gate is in a balanced state at this inclination. If water is continued to be injected, the dock gate will begin to sink.

[0070] 33) Installation procedure 5: Fig.16 As shown, the winch is started, and the position of the ear shafts at both ends of the lower part of the dock door is accurately adjusted by pulling the cable; the ear shafts are slowly pulled to the top of the hinge bearing seat, and the two ear shafts are aligned with the hinge bearing seat, and the ear shafts lightly contact the positive guide plate on the hinge bearing; this step requires divers to go into the water to observe and direct the operation of the winch and cable reel for adjustment.

[0071] 34) Installation procedure 6: Fig.17 As shown, after the relative position of the ear shaft and the hinge bearing seat is accurately adjusted, water is immediately poured into the cabin number U to slowly sink the dock door. The ear shaft passes through the limit of the positive and transverse guide plates of the hinge bearing seat and falls accurately into the groove of the hinge bearing seat for hinged connection. Then the water injection is stopped, and the water injection volume is about 94%.

[0072] After the dock door ear shaft is installed in place, all the sealing plates on the tidal openings on the E1 and E2 cabins are removed, and the E1 and E2 cabins are allowed to continue to be filled with seawater until they are consistent with the sea level, so that the dock door can swing up and down with the tide of the sea; the valves of the water inlets on each cabin are closed, and each water inlet and exhaust port are tightly sealed with a blind flange.

[0073] 35) Install the program 7: Fig.18As shown, after the ear shaft is hinged into the hinged bearing seat, the wire rope is installed. There is one wire rope for the dock door, which is led out from the drum of the left winch and passes through the left pulley on the shore, the left pulley on the tipping dock door, the right pulley on the tipping dock door, and the right pulley on the shore, and then connected to the drum of the right winch; the wire rope has a large diameter and is heavy, and it cannot be passed between the pulleys by manpower, so it needs to be pulled by the traction cable to pass through each pulley group; before passing through, one end of the traction cable is overlapped and tied with the lead-out end of the wire rope to ensure that it will not loosen and fall off during dragging, and then the traction cable is passed through the pulley on the shore and the pulley on the dock door one by one, and finally connected to the winch drum on the other side. , start the winches on both sides to rotate the drum at the same time, the left winch releases the wire rope, and the right winch receives the traction cable wrapped around the drum, and at the same time drags the wire rope along the path of the traction cable to pass through the pulley on the shore and the pulley on the dock door one by one, and finally the wire rope is pulled to the drum position of the right winch. At this time, remove the binding connection between the traction cable and the wire rope, remove the traction cable wrapped around the drum, fix the wire rope on the right winch, and then start the left and right winches at the same time to continue the operation of the left winch releasing the wire rope and the right winch receiving the wire rope, until the number of wire rope winding circles and layers on the winch drums on both sides are the same, the installation of the wire rope is completed.

[0074] After the installation of the wire rope is completed, the operation of closing the dumping dock door will then begin; at the same time, the winches on both sides will be started to tighten the wire rope, thereby pulling up the sealing structure of the dumping dock door and slowly approaching the sealing surface of the dock opening. When the sealing structure contacts the sealing surface of the dock opening, the winch will be stopped to pull up the dumping dock door, and then the dry dock will be drained. It should be noted that before closing the dock door, the inspection gates and balance filling valves on both sides of the dock need to be opened at the same time to ensure the sea level pressure inside and outside the dock.

[0075] Start the drainage pumps in the buildings on both sides of the dry dock to drain the seawater in the dry dock. Before drainage, close the gates, balance filling valves and other equipment in the buildings on both sides of the dry dock that lead to the water filling gallery of the dry dock to prevent seawater from continuing to flow into the dry dock through the water filling gallery. During the drainage process, check the leakage of the dock door one by one as the water level drops, and use the inching function of the winch to continue to tighten the contact and pressure between the sealing structure of the dock door and the sealing surface of the dock mouth until the sealing leakage of the dock door meets the requirements.

[0076] 36) After the dock door is installed and the sealing leakage meets the requirements, set the stop limit of the dock door winch, set the manual and automatic ranges, check the tightness of the wire rope, and conduct comprehensive tests and adjustments on all functions and control systems of the winch; before starting the commissioning of the dock door, open the gate and balance filling valve of the water filling gallery, fill water into the dock through the water filling gallery, and start the opening and closing commissioning of the dock door until the water level in the dock is consistent with the sea level.

[0077] First, debug the dock door opening and adjust the dock door opening speed as follows: when the dock door is closed, start the winch to release the wire rope, select a shorter wire rope release distance (such as 1.5m), and operate manually to open the dock door in a slow state. When the wire rope is released for 1.5m, set the automatic and rapid wire rope release program in the winch control cabinet, and the dock door begins to automatically and rapidly fall. When it is 1.5m away from the pier, stop the automatic program setting, and continue to manually operate the dock door to slowly continue to fall until the wooden pad on the dock door contacts the pier. After the dock door stops on the pier, stop manual operation and check the tension of the wire rope. If the wire rope is too tight, continue to manually release the wire rope until the wire rope is no longer in a tight state, and then start setting the limit switch; Then carry out closing debugging of the dock door, and adjust the opening speed of the dock door as follows: when the dock door is fully open, start the winch to retract the wire rope, select a shorter wire rope release distance (such as 1.5m), and operate manually to make the dock door close slowly. When the wire rope is retracted 1.5m, set the automatic rapid retraction program of the wire rope in the winch control cabinet, and the dock door begins to automatically and rapidly pull up. When it is 1.5m away from the sealing surface of the dock sill, stop the automatic program setting, and continue to manually operate the dock door to slowly continue to lift and close until the sealing structure on the dock door contacts the sealing surface of the dock sill and presses the sealing strip, then start to set the limit switch.

[0078] The terms “connection” and “fixation” mentioned in the description of the present invention may refer to fixed connection, processing and forming, welding or mechanical connection. The specific meanings of the above terms in the present invention shall be understood according to the specific circumstances.

[0079] In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inside", "outside", etc., which indicate the orientation or position relationship, are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying a specific orientation that the device or element referred to must have, and therefore cannot be understood as a limitation on the present invention.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dumping dock door installation structure, characterized in that: It includes a left mounting structure and a right mounting structure; The left installation structure (1) comprises a wall sealing structure (11), a hinged bearing seat (12), a winch (13), a first pulley block (14) and a plurality of winches (15); the wall sealing structure (11) is installed on the left side of the dock door; the hinged bearing seat (12) is arranged at the bottom of the wall sealing structure (11), the first pulley block (14) is arranged on the upper part of the wall sealing structure (11), the winch (13) is arranged on the left side of the first pulley block (14) to drive the first pulley block (14) to rotate; the winch (15) is arranged on the side bank of the dock; The right mounting structure (2) is the same as the left mounting structure (1) and is arranged on the right side of the dock door; The top of the dumping dock door (3) is connected to the first pulley block (14), a lifting lug (31) matching the winch (15) is provided in the middle, and a trunnion (32) at the bottom is hinged to the hinged bearing seat (12).

2. A dumping type dock door installation structure as claimed in claim 1, characterized in that: The wall sealing structure (11) comprises a horizontal prefabricated block (111), a vertical prefabricated block (112), a first-stage concrete (113), a horizontal embedded component, and a second-stage concrete (115); the first-stage concrete (113) is L-shaped and is arranged on the left side of the dock door; the horizontal embedded component comprises a steel buttress (116), a wedge plate (117), a non-shrinkage concrete buttress (118), and an anchor bolt (114); the bottom of the steel buttress (116) is connected to the upper part of the first-stage concrete (113), and the top of the steel buttress (116) is supported by the wedge plate (117) to support the horizontal prefabricated block (116). The bottom of the horizontal precast block (111) is provided; the non-shrinkage concrete pier (118) is provided between the horizontal precast block (111) and the first stage concrete (113); the anchor bolts (114) pass through the anchor bolt holes on the horizontal precast block (111) and are anchored in the first stage concrete (113); the second stage concrete (115) is L-shaped and provided on the inner side of the first stage concrete (113); the horizontal precast block (111) is provided on the upper part of the horizontal side of the second stage concrete (115), and the vertical precast block (112) is provided on the right part of the vertical side of the second stage concrete (115).

3. A dumping type dock door installation structure as claimed in claim 2, characterized in that: The vertical prefabricated block (112) comprises a plurality of vertical prefabricated units, and expansion joint epoxy grouting materials (4) are provided between adjacent vertical prefabricated units; the expansion joint epoxy grouting materials (4) are arranged horizontally, and chemically embedded steel bars (5) are provided on the left and right sides for fixing.

4. A dumping type dock door installation structure as claimed in claim 3, characterized in that: The horizontal prefabricated block (111) comprises a plurality of horizontal prefabricated units, and expansion joint epoxy grouting material (4) is provided between adjacent horizontal prefabricated units.

5. The tilting dock door installation structure according to claim 1, characterized in that: A second pulley block (33) is provided on the top of the dumping dock door (3), and the second pulley block (33) is connected to the first pulley block (14) via a steel wire rope.

6. A method for installing a dumping dock door, characterized in that: Using the dumping dock door installation structure as claimed in claim 1 comprises the following steps: Step S1, setting a wall sealing structure (11) at the dock door, and setting a winch (13), a first pulley block (14) and a hoist (15) on the shore; filling the dock with water and excavating a cofferdam in front of the dock entrance, so that the water level in the dock is consistent with the sea level; Step S2, using a tugboat or other power traction equipment to tow and float the dumping dock door (3) from the temporary berthing position to the ocean side in front of the dock entrance; Step S3, adjusting the winches (15) and the hauling ropes of the left mounting structure (1) and the right mounting structure (2) according to the position of the dumping dock door (3), the winches (15) being respectively connected to the lifting ears at the left and right ends of the dumping dock door (3) to perform auxiliary traction movement and position adjustment; Step S4, starting different winches (15) to adjust the position of the tilting dock door (3) lying flat and floating on the sea surface, so that the trunnions (32) at both ends of the bottom face the hinged bearing seat (12) at the dock sill position on the seabed; Step S5, arranging a water injection pump and a water injection pipe to inject water into the water tanks of each compartment of the dumping dock door (3) to gradually change its posture from lying flat to tilted upright, and the ear shafts (32) on the left and right sides gradually sink and slide down to connect with the hinge bearing seat (12); Step S6, connecting the first pulley block (14) to the top of the dumping dock door (3) via a steel wire rope, starting the winch (13) to drive the first pulley block (14) to rotate so that the dumping dock door (3) rotates to complete opening and closing, and draining water from the dock to check the sealing performance of the dumping dock door (3).

7. The method for installing a dumping dock door according to claim 6, characterized in that: It also includes horizontal prefabricated blocks (111), vertical prefabricated blocks (112), first-stage concrete (113), horizontal embedded parts, second-stage concrete (115), steel piers (116), wedge plates (117), and non-shrinkage concrete piers (118). In step S1, the wall sealing structure is provided including the following steps: Step S11, pre-embedding stainless steel anchor bolts (114) in the first phase of concrete according to the anchor bolt holes reserved on the horizontal prefabricated block (111) and the vertical prefabricated block (112); Step S12, arranging the steel buttresses (116) and the wedge plates (117) according to the length of a single prefabricated unit, and adjusting them so that one prefabricated unit supports two groups of steel buttresses (116) and wedge plates (117); Step S13, based on the axis of the sealing surface, a reference bracket (6) and a reference line (7) for measurement and adjustment are arranged at a position offset from the sealing surface by a certain distance, and the reference line (7) is made of a piano wire with good toughness and strength; Step S14, hoisting and placing the horizontal prefabricated unit on the wedge plate (117), adjusting the axis position of the sealing surface with the reference line (7), and adjusting the elevation of the horizontal prefabricated unit with the center point of the sealing surface; Step S15, fixing the horizontal prefabricated units with the adjusted sealing surface axis and elevation using anchor bolts (114), adjusting and fixing each unit piece by piece until all the horizontal prefabricated units (111) are sealed and adjusted; Step S16, pouring non-shrinkage concrete piers (118) at the bottom of each horizontal precast unit, arranging two piers for each horizontal precast unit for support, taking out the steel piers (116) and the wedge plate (117), and then pouring the precast block cushion concrete, and then horizontally grouting the gaps between the precast units with epoxy grouting material (4), and finally pouring the second phase of concrete (115); Step S17, after the horizontal prefabricated block (111) is installed and concrete is poured, the supporting steel bars of the vertical prefabricated block (112) are supported by the embedding method at the connection positions of the horizontal prefabricated blocks (111) and the vertical prefabricated blocks (112) on both sides; Step S18, hoisting and placing the vertical prefabricated block (112) on the supporting steel bars, binding it with iron wires and tie bolts to prevent it from falling over, first aligning the sealing surface of the vertical prefabricated block (112) with the sealing surface of the horizontal prefabricated block (111), and welding and fixing them with stainless steel plates, and then measuring and adjusting the verticality of the sealing surface using the plumb bob method; Step S19, after the verticality of the vertical prefabricated block (112) is adjusted, the gaps between the vertical prefabricated units are firstly filled with expansion joint epoxy grouting (4), and then the second phase of concrete (115) is poured; after the pouring is completed, the next vertical prefabricated unit is installed, adjusted and poured using the same method.

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