A heavy-duty dock suitable for large floating docks

Abstract

The utility model discloses a heavy load dock pier suitable for large floating dock relates to shipbuilding technical field, specifically includes upper pier wood, sand box, graded sand, concrete pier and lower pier wood, wherein sand box is fixed in the top of concrete pier, and lower pier wood is fixed in the below of concrete pier, the graded sand is filled to the inside of sand box, and its filling capacity can be adjusted, the top opening of sand box, and the upper pier wood is placed on the graded sand in the inside of sand box and can be adjusted fixed with sand box. The utility model whole simple structure, and each component is connected through bolt, and the disassembly is convenient, and the on -the -spot construction is convenient, the upper pier wood is multilayer multicolour arrangement, and the lower pier wood is single layer multicolour arrangement, and the size of concrete pier is larger than conventional pier, and the carrying capacity of pier whole is effectively promoted, thereby satisfies heavy load use working condition requirement, and the bearing balance is better, still realizes the adjustment of pier height through the adjustment of cheap graded sand filling capacity, and the overall cost of pier is reduced, and the manufacturing cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding technology, specifically to a heavy-duty dock pier suitable for large floating docks. Background Technology

[0002] In modern shipbuilding, dock piers are load-bearing structures located on the bottom of dry docks or the decks of floating docks. They typically consist of concrete piers and timber piers. The concrete piers are reinforced concrete load-bearing structures, while the timber piers are generally composed of pairs of diagonal and horizontal timber piers. A typical dock pier configuration consists of a pair of diagonal timber piers and several single rows of horizontal timber piers stacked on top of each other. Due to limitations in log size, the maximum single-side dimension of the timber cross-section is generally 400mm, and the load-bearing capacity of a single timber pier is limited, resulting in a relatively small load-bearing capacity for conventional dock piers.

[0003] With the trend towards larger and heavier ships, and the evolution of ship hull lines, higher demands are being placed on the load-bearing capacity of individual dock piers. Currently, large floating docks can lift over 100,000 tons. Based on a calculation of approximately 300 dock piers per floating dock, and considering safety margins and the load unevenness coefficient of the dock piers, the required load-bearing capacity of a single dock pier is approximately 600-800 tons. The existing capacity of ordinary dock piers is insufficient to meet this requirement. Furthermore, the 600-800 ton load per dock pier places higher demands on the floating dock pier system. Conventional dock pier designs lack timber supports beneath the concrete piers, which, if used in large floating docks, would hinder the even distribution of loads on the floating dock deck. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing background technology and provide a heavy-duty dock pier suitable for large floating docks.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a heavy-duty dock pier suitable for large floating docks, comprising an upper pier, a sand box, graded sand, a concrete pier, and a lower pier, wherein the sand box is fixed above the concrete pier, and the lower pier is fixed below the concrete pier; the graded sand is filled into the sand box, and the filling amount is adjustable; the top of the sand box is open, and the upper pier is placed on the graded sand inside the sand box and is adjustablely fixed to the sand box.

[0006] Furthermore, the concrete pier includes a reinforced concrete block and multiple embedded channel steels, embedded bolt pairs, forklift holes, and J-shaped steel bars embedded in the reinforced concrete block. There are two forklift holes, both of which are made of square tubes. The multiple J-shaped steel bars are welded and fixed to the periphery of the square tubes in the forklift holes.

[0007] Furthermore, the two forklift holes are at the same height and arranged symmetrically, with the spacing between the two forklift holes matching the spacing between the forklift forks and clamps.

[0008] Furthermore, the sand box is a bottomless and lidless frame structure, comprising two long-side channel steels, two short-side channel steels, four overlapping blocks, and four latch blocks; square holes are provided at both ends of the long-side channel steels, and bolt holes are provided on both the upper and lower flanges of the long-side channel steels, wherein the bolt holes on the lower flanges are adapted to and fixed with the pre-embedded bolt pairs on the upper part of the concrete pier; an overlapping block is fixedly installed at each end of the short-side channel steels, each overlapping block having an insertion hole, and bolt holes are provided on both the upper and lower flanges of the short-side channel steels, wherein the bolt holes on the lower flanges are adapted to and fixed with the pre-embedded bolt pairs on the upper part of the concrete pier.

[0009] The aforementioned short-side channel steel is inserted into the square hole of the aforementioned long-side channel steel through an overlapping block, and then fixed by inserting a latch block into the corresponding insertion hole to form a frame-type sand box.

[0010] Furthermore, the latch block is wedge-shaped.

[0011] Furthermore, the upper pier includes three layers of pads, which are, from top to bottom, the first layer, the second layer, and the third layer. The first and third layers of pads are made of hardwood, while the second layer of pads is made of softwood, the cross-grain compressive strength of which is lower than that of hardwood.

[0012] Furthermore, a single upper pier includes two first-layer pads, three second-layer pads, and two third-layer pads. The single-layer pads are arranged side by side. The second-layer pads have through-holes in the width direction. The three second-layer pads are connected as a whole through the through-holes by through bolt pairs.

[0013] Both ends of the aforementioned through bolt pair are equipped with L-shaped connecting blocks. The aforementioned third layer of wooden blocks is placed in the clamping space between the two L-shaped connecting blocks, directly below the second layer of wooden blocks, and placed in the sand box.

[0014] Furthermore, the first layer of wooden blocks and the second layer of wooden blocks are connected and fixed by self-tapping screws, and countersunk holes are made at the screw connection points of the first layer of wooden blocks. After the self-tapping screws are installed, they are sunk into the countersunk holes to avoid damaging the paint on the bottom of the ship to be built (or repaired).

[0015] Furthermore, bolt holes are provided on the transverse section of the L-shaped connecting block, and bolt pairs are installed inside them, which are fixedly connected to the bolt holes on the upper flange plate of the long side channel steel in the sand box.

[0016] Furthermore, the lower pier includes three closely spaced wooden blocks arranged side by side, which are fixedly connected to the concrete pier by pre-embedded bolt pairs at the bottom of the concrete pier. The bottom surface of the lower pier has countersunk holes at the connection of the pre-embedded bolt pairs.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] I. The overall structure of this utility model is simple, and the components are connected by bolts, making disassembly convenient and facilitating on-site construction;

[0019] Second, this utility model achieves the adjustment of the dock height by adjusting the amount of inexpensive graded sand filling, thereby reducing the overall cost of the dock and reducing manufacturing costs.

[0020] Third, the concrete piers in this utility model have a large volume and are arranged in multiple layers and rows, which improves the overall bearing capacity of the dock piers and thus meets the requirements of heavy-load use conditions.

[0021] Fourth, this utility model has a lower pier at the bottom of the concrete pier, which utilizes the deformation advantage of the pier to help balance the load of the dock pier on the floating dock deck. Attached Figure Description

[0022] Figure 1 This is a front view of the overall structure of the dock pier of this utility model;

[0023] Figure 2 This is a side view of the dock pier of this utility model;

[0024] Figure 3 This is a front view of the upper stump in this utility model;

[0025] Figure 4 This is a side view of the upper part of the stump in this utility model;

[0026] Figure 5 This is a top view of the sand box in this utility model;

[0027] Figure 6 This is a front view of the long side channel steel of the sand box in this utility model;

[0028] Figure 7 This is a front view of the short-side channel steel of the sand box in this utility model;

[0029] Figure 8 This is a front view of the latch block of the sand box in this utility model;

[0030] Figure 9 This is the front view of the concrete pier in this utility model;

[0031] Figure 10 This is a side view of the concrete pier in this utility model;

[0032] In the diagram: 1. Upper pier, 2. Sand box, 3. Graded sand, 4. Concrete pier, 5. Lower pier, 11. First layer of padding, 12. Second layer of padding, 13. Third layer of padding, 14. L-shaped connecting block, 15. Bolt pair, 16. Self-tapping screw, 17. First countersunk hole, 18. Connecting through hole, 19. Through bolt pair, 21. Long side channel steel, 22. Short side channel steel, 23. Overlap block, 24. Latch block, 25. Square hole, 26. Insert hole, 27. Bolt hole, 41. Reinforced concrete block, 42. Upper embedded channel steel, 43. Upper embedded bolt pair, 44. Lower embedded channel steel, 45. Lower embedded bolt pair, 46. Forklift hole, 47. J-shaped steel bar, 51. Second countersunk hole. Detailed Implementation

[0033] It should be noted that in the description of this utility model, terms such as "upper", "lower", "left", "right", "front", "rear", "inner", "outer", "coaxial", "through", and "through" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are only used to facilitate the description of the structural relationship between the components in this utility model and do not specifically mean that any component in this utility model must have a specific orientation, be constructed and operated in a specific orientation, or be construed as a limitation on this utility model.

[0034] Furthermore, in the embodiments of the utility model, descriptions such as "first" and "second" are for descriptive purposes only and do not specifically refer to any order or sequence, nor are they intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature specified with "first" or "second" may explicitly or implicitly include at least one of those features.

[0035] It should be noted that, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0037] like Figure 1 and Figure 2As shown, a heavy-duty dock pier suitable for large floating docks includes an upper pier 1, a sand box 2, graded sand 3, a concrete pier 4, and a lower pier 5. The concrete pier 4 is the main structure of the entire dock pier. The sand box 2 is fixedly installed above the concrete pier 4 and tightly connected to it. The graded sand 3 is filled into the sand box 2. The upper pier 1 is placed above the graded sand 3 through an opening at the top of the sand box 2 and can be fixedly connected to the sand box 2. The lower pier 5 is fixedly installed below the concrete pier 4.

[0038] Specifically, refer to Figure 9 and Figure 10 As shown, the concrete pier 4 includes a reinforced concrete block 41 and multiple embedded channel steels, embedded bolt pairs, forklift holes 46, and J-shaped steel bars 47 pre-embedded in the reinforced concrete block 41. The forklift holes 46 are made of pre-embedded square tubing, and the multiple J-shaped steel bars 47 are evenly arranged on the outside of the square tubing and welded to it. The J-shaped steel bars 47 are relatively perpendicular to the square tubing. The reinforced concrete block 41 is constructed by casting a steel cage and concrete. The embedded channel steels, embedded bolt pairs, and square tubing are prefabricated before concrete pouring and then welded together. The pre-embedded channel steel is fixed to the inside of the reinforcing cage. It consists of an upper pre-embedded channel steel 42 and a lower pre-embedded channel steel 44, which are welded and fixed to the upper and lower parts of the reinforcing cage, respectively. Multiple bolt holes are drilled on all pre-embedded channel steels, and the aforementioned pre-embedded bolt pairs are installed in these holes and welded in place. Concrete is then poured and formed, with the outer ends of the pre-embedded bolt pairs extending beyond the reinforced concrete block 41. The J-shaped reinforcing bars 47 increase the bond strength between the forklift hole square tube and the concrete, preventing the forklift hole 46 from loosening during the use of the entire dock. During the pouring and vibration of the entire reinforced concrete block 41, the positioning dimensions of the forklift hole square tube and the multiple pre-embedded bolt pairs must be checked in real time; any deviations must be corrected.

[0039] In a further optimization, there are two forklift holes 46, which are at the same height and arranged symmetrically. The distance between the two forklift holes 46 matches the distance between the forklift forks, which facilitates lifting by forklift when the dock is moved.

[0040] Combination Figures 5 to 7As shown, the sand box 2 is a bottomless and lidless frame structure, including two long-side channel steels 21, two short-side channel steels 22, four overlapping blocks 23, and four latch blocks 24. Each long-side channel steel 21 has square holes 25 at both ends, which are on the same horizontal axis. Bolt holes 27 are provided on the upper and lower flanges of the long-side channel steel 21. Each short-side channel steel 22 has an overlapping block 23 fixed at both ends. The overlapping block 23 is convex in shape and is horizontally welded to the short-side channel steel 22. Each overlapping block 23 has an insertion hole 26 at its outer end. Bolt holes 27 are also provided on the upper and lower flanges of the short-side channel steel 22. The overlapping blocks 23 at both ends of the aforementioned short-side channel steel 22 are respectively inserted into the square holes 25 on the corresponding long-side channel steel 21. The overlapping blocks 23 extend outwards, and then the latch blocks 24 are inserted into the corresponding insertion holes 26 to form a fixation, so that the short-side channel steel 22 and the long-side channel steel 21 are tightly fitted to form a square frame structure. Preferably, refer to Figure 8 As shown, the latch block 24 is wedge-shaped.

[0041] After the concrete pier 4 is poured and cured to a qualified standard, the sand box 2 is fixed to the upper end face of the concrete pier 4 by matching and fixing the bolt holes 27 on the lower flange plates of the long side channel steel 21 and the short side channel steel 22 with the upper pre-embedded bolt pair 43 on the upper part of the concrete pier 4. The sand box 2 is then tightly fitted to the upper end face of the concrete pier 4. Then, the graded sand 3 is filled into the sand box 2.

[0042] Combination Figure 3 and Figure 4 As shown, the upper pier 1 comprises three layers of pads, from top to bottom: a first layer of pads 11, a second layer of pads 12, and a third layer of pads 13. Two pads are arranged in the first layer 11, three in the second layer 12, and two in the third layer 13. Each layer of pads is arranged side-by-side. The three second-layer pads 12 also have transverse through-holes 18 in their width direction, through which through-bolt pairs 19 are installed. These through-bolt pairs 19 secure the three second-layer pads 12 together. The first layer of pads 11 and the third layer of pads 13 are both made of hardwood, while the second layer of pads 12 are made of softwood. The transverse compressive strength of the softwood must be lower than that of the hardwood.

[0043] The first layer of wooden blocks 11 is connected and fixed directly above the second layer of wooden blocks 12 by multiple self-tapping screws 16, and a first countersunk hole 17 is opened at the connection of the self-tapping screws 16. After installation, the self-tapping screws 16 are sunk into the first countersunk hole 17. Compared with the traditional binding method of dock blocks, there are no hard binding materials in the area above the top layer of wooden blocks, so as to avoid the self-tapping screws 16 damaging the bottom paint of the ship to be built (or repaired).

[0044] The third layer of pad 13 is installed directly below the second layer of pad 12 via L-shaped connecting blocks 14. The vertical section of the L-shaped connecting block 14 is fitted onto the two ends of the through bolt pair 19 through its upper through hole and is tightened and fixed by the corresponding nuts. The L-shaped connecting block 14 is vertically arranged, and its horizontal section extends outward with bolt holes. The third layer of pad 13 is placed in the clamping space of the L-shaped connecting blocks 14 at both ends and placed downward on the graded sand 3 in the sand box 2. Then, the bolt pair 15 passes through the bolt holes in the horizontal section of the L-shaped connecting block 14 and the bolt holes 27 on the upper flange plate of the corresponding long side channel steel 21 to fix the entire upper block 1 to the sand box 2.

[0045] The aforementioned graded sand 3 must meet the load-bearing requirements and the particle size must meet the relevant requirements of the dock pier. Its filling amount in the sand box 2 is adjusted according to the overall height requirements of the dock pier.

[0046] The aforementioned lower pier 5 is generally equipped with three pads arranged side by side, which are fixedly connected to the lower pre-embedded bolts 45 at the bottom of the concrete pier 4. A second countersunk hole 51 is provided at the connection of the lower pre-embedded bolts 45 at the bottom of the lower pier 5. After installation, the lower pre-embedded bolts 45 sink into the second countersunk hole 51 to avoid the bolts damaging the paint on the floating dock deck. The lower pier 5 can evenly distribute the load borne by the entire dock pier to the floating dock deck, avoiding excessive local load and damage to the floating dock deck.

[0047] In practical use, the concrete pier 4 is first poured and cured. After it is qualified, the upper pier 1, sand box 2, graded sand 3 and lower pier 5 are assembled with it. After assembly, the first layer of pad wood 11 can be configured with flat wood or inclined wood according to the actual dock requirements. Flat wood can be configured for the dock piers in the flat area of ​​the floating dock deck, and inclined wood can be configured for the dock piers in the sloping area of ​​the floating dock deck. The slope of the upper surface of the inclined wood is the same as the slope of the floating dock deck. The dock piers in the flat area and the sloping area are only different in the configuration of the first layer of pad wood 11. The rest of the dock piers are the same, which makes them interchangeable and easy to assemble.

[0048] The bolt pair mentioned in the above embodiments is usually a set of bolts (including screw, nut, and several or one washer).

[0049] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A heavy-duty dock pier suitable for large floating docks, characterized in that: It includes an upper pier, a sand box, graded sand, a concrete pier, and a lower pier, wherein the sand box is fixed above the concrete pier and the lower pier is fixed below the concrete pier; the graded sand is filled into the sand box, and the filling amount is adjustable; the top of the sand box is open, and the upper pier is placed on the graded sand inside the sand box and is adjustablely fixed to the sand box.

2. A heavy-duty dock pier suitable for large floating docks according to claim 1, characterized in that: The concrete pier includes a reinforced concrete block and multiple embedded channel steels, embedded bolt pairs, forklift holes and J-shaped steel bars embedded in the reinforced concrete block. There are two forklift holes, both of which are made of square tubes. The multiple J-shaped steel bars are welded and fixed to the periphery of the square tubes of the forklift holes.

3. A heavy-duty dock pier suitable for large floating docks according to claim 2, characterized in that: The two forklift holes are at the same height and are arranged symmetrically to each other. The distance between the two forklift holes matches the distance between the forklift forks and clamps.

4. A heavy-duty dock pier suitable for large floating docks according to claim 2, characterized in that: The sand box is a bottomless and lidless frame structure, comprising two long-side channel steels, two short-side channel steels, four overlapping blocks, and four latch blocks. The long-side channel steels have square holes at both ends, and bolt holes are provided on both the upper and lower flanges. The bolt holes on the lower flanges are fitted and fixed to the pre-embedded bolt pairs on the upper part of the concrete pier. Each of the short-side channel steels has an overlapping block fixedly installed at both ends, and each overlapping block has an insertion hole. The short-side channel steels also have bolt holes on both the upper and lower flanges, with the bolt holes on the lower flanges fitting and fixed to the pre-embedded bolt pairs on the upper part of the concrete pier. The aforementioned short-side channel steel is inserted into the square hole of the aforementioned long-side channel steel through an overlapping block, and then fixed by inserting a latch block into the corresponding insertion hole to form a frame-type sand box.

5. A heavy-duty dock pier suitable for large floating docks according to claim 4, characterized in that: The latch block is wedge-shaped.

6. A heavy-duty dock pier suitable for large floating docks according to claim 1, characterized in that: The upper pier includes three layers of pads, from top to bottom: the first layer, the second layer, and the third layer. The first and third layers are made of hardwood, while the second layer is made of softwood, which has a lower crossgrain compressive strength than hardwood.

7. A heavy-duty dock pier suitable for large floating docks according to claim 6, characterized in that: A single upper pier consists of two first-layer pads, three second-layer pads, and two third-layer pads. The pads in each layer are arranged side by side. The second-layer pads have through holes in their width direction. The three second-layer pads are connected as a whole through bolts through the through holes. Both ends of the aforementioned through bolt pair are equipped with L-shaped connecting blocks. The aforementioned third layer of wooden blocks is placed in the clamping space between the two L-shaped connecting blocks, directly below the second layer of wooden blocks, and placed in the sand box.

8. A heavy-duty dock pier suitable for large floating docks according to claim 7, characterized in that: The first layer of wooden blocks and the second layer of wooden blocks are connected and fixed by self-tapping screws, and countersunk holes are made at the screw connection points of the first layer of wooden blocks. After the self-tapping screws are installed, they are recessed into the countersunk holes.

9. A heavy-duty dock pier suitable for large floating docks according to claim 7, characterized in that: Bolt holes are provided on the transverse section of the L-shaped connecting block, and bolt pairs are installed inside them, which are fixedly connected to the bolt holes on the upper flange plate of the long side channel steel in the sand box.

10. A heavy-duty dock pier suitable for large floating docks according to claim 2, characterized in that: The lower pier consists of three closely spaced wooden blocks arranged side by side, which are fixedly connected to the concrete pier by pre-embedded bolts at the bottom of the pier. The bottom surface of the lower pier has countersunk holes at the connection of the pre-embedded bolts.

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