Construction device for precast block flexible mattress

Abstract

The application relates to a construction device for prefabricated block flexible mattress paving, which comprises a ship body, a recess is arranged on one side of the upper surface of the ship body, and air suction holes are uniformly arranged on the surface of the recess; a rotatable winding drum is arranged above the ship body; a paving cloth is wound on the outer wall of the winding drum; an axis is rotatably arranged in the ship body, and the outer wall upper end of the axis extends to the upper surface of the recess; and a plurality of axes are equidistantly arranged on the ship body, the invention is characterized in that the axes and convex rings are arranged in the recess of the ship body, and the air suction holes and air suction cavities are matched, so that the friction can be reduced during the movement of the paving cloth, the cloth body is prevented from being damaged, the convex rings of the axes are used as positioning references, the arrangement of the prefabricated blocks on the paving cloth is more neat, and the paving quality and construction efficiency are improved. Meanwhile, the paving cloth and the prefabricated blocks are fixed through the binding ropes and the reinforcing belt structure, so that the overall stability is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of prefabricated block revetment mattress paving, in particular to a construction device for prefabricated block flexible mattress paving. BACKGROUND

[0002] Mattress paving is a common construction process in waterway regulation and revetment engineering, which mainly plays a role in laying prefabricated blocks, geotextile and other composite structure layers on the surface of soft riverbed or bank slope to form a protective layer with overall stability, so as to enhance the anti-erosion ability of the riverbed or bank slope. The existing mattress paving usually uses a paving ship for operation, a reel is arranged on the ship body for winding and unwinding geotextile or composite cloth, and prefabricated blocks are fixed on the cloth surface, so as to complete large-area underwater mattress work. This process has high construction efficiency and can complete large-scale underwater slope protection or bottom protection engineering in a short time, and has been widely used in the regulation engineering of the main stream of the Yangtze River and many important waterways.

[0003] However, the existing mattress paving technology still has some deficiencies: on the one hand, the existing prefabricated blocks lack a unified positioning reference when being tied to the paving cloth, which is prone to messy and irregular arrangement, which is not conducive to the guarantee of construction quality; at the same time, the friction between the prefabricated blocks and the paving cloth is large during movement, which is prone to wear or damage of the paving cloth, affecting its service life. On the other hand, the sliding plates on the existing paving ship are mostly fixed structures, or can only be adjusted at a limited angle, which has poor flexibility and is difficult to adapt to different water environments in actual construction; and the sliding plates cannot be folded and stored when not in use, which has the problems of large space occupation and inconvenient operation. SUMMARY

[0004] In order to solve the problems of lack of positioning reference for tying prefabricated blocks in the existing mattress paving, messy arrangement and easy damage to the paving cloth, and poor flexibility and inconvenient storage of the sliding plates of the paving ship, the present application provides a construction device for prefabricated block flexible mattress paving.

[0005] The construction device for prefabricated block flexible mattress paving provided by the present application adopts the following technical scheme:

[0006] A construction device for prefabricated block flexible mattress paving, comprising:

[0007] A ship body, a recess is arranged on one side of the upper surface of the ship body, and a plurality of air suction holes are arranged on the surface of the recess;

[0008] A rotatable reel is installed above the ship body;

[0009] A paving cloth is wound around the outer wall of the reel;

[0010] The rotating shafts are rotatably installed in the ship body, and the outer wall of the rotating shafts extends to the upper surface of the recessed part, the rotating shafts are multiple and are equally spaced on the ship body, multiple convex rings are arranged on the outer wall of the rotating shafts and along the axial direction of the rotating shafts, the center lines of the rotating shafts are parallel to each other, and the line connecting the centers of the two convex rings corresponding to the two adjacent rotating shafts is parallel to the movement track of the laying and arranging.

[0011] The sliding plate is arranged at the recessed part of the ship body and is hingedly connected to the edge of the ship body, and can be turned to the outside of the ship body when an external force is applied thereto; when the sliding plate is at the recessed part, the upper surface of the sliding plate is flush with the upper surface of the ship body.

[0012] By adopting the above technical scheme, the sliding plate is arranged on the ship body and can be hidden after being folded and stored, which prevents the daily work of the workers on the ship from being affected; and after the sliding plate is unfolded, the rotating shafts at the recessed part can be exposed, and in the process of laying and arranging, on the one hand, the air between the recessed part and the laying and arranging is adsorbed by the air suction holes at the recessed part, so that the workers can stretch the laying and arranging and attach it to the surface of the recessed part, and on the other hand, the rotating shafts and the convex rings thereon can be used as a reference to install the precast blocks on the surface of the laying and arranging at the positions of the convex rings, so that the precast blocks are finally arranged in the horizontal and vertical directions of the laying and arranging, thereby making the laying more beautiful and improving the construction quality; on the one hand, in the process of laying and arranging, the friction between the laying and arranging and the surface of the ship body can be reduced by rotating the rotating shafts during the movement of the laying and arranging, so as to improve the work efficiency of the laying and arranging and save time.

[0013] Optionally, the rotating shafts are installed in the ship body through bearings, the height of the rotating shafts extending to the upper surface of the recessed part is smaller than the radius of the rotating shafts, positioning wheels rotating synchronously with the rotating shafts are installed at the ends of the rotating shafts, a plurality of positioning grooves are uniformly distributed in the circumferential direction of the positioning wheels, and the positioning grooves are V-shaped grooves; a plurality of positioning conical blocks vertically and synchronously lifting are installed in the ship body, and the taper of the positioning conical blocks is consistent with the included angle of the V-shaped grooves.

[0014] By adopting the above technical scheme, the rotating shafts are mainly used in the process of precast block laying to prevent the workers from falling down due to the rotation of the rotating shafts when the workers step on the rotating shafts by mistake, and the displacement of the precast blocks caused by the rotation of the rotating shafts during the laying process is also avoided, so that the arrangement is not neat; the positioning grooves are designed as V-shaped grooves, and the positioning conical blocks are inserted into the positioning grooves, so that the positioning effect can be achieved regardless of the angle of the rotating shafts, and the jamming phenomenon is prevented.

[0015] Optionally, the convex ring cross section is arc-shaped at both ends, and a transition fillet is arranged at the connection between the convex ring and the rotating shaft.

[0016] By adopting the above technical scheme, the convex ring profile is designed as an arc shape because in the process of laying the prefabricated blocks, the prefabricated blocks are laid on the upper paving arrangement, if the convex ring profile is rectangular, it is easy to cause scratches in the moving process of the paving arrangement, and the design of the arc structure can make the paving arrangement smoothly transition on the surface of the rotating shaft and the convex ring, which is beneficial to the smooth movement of the paving arrangement and can avoid the situation that the worker is tripped on the surface of the ship body, thereby improving safety.

[0017] Optionally, an air suction cavity is arranged inside the ship body and below the recess, the air suction cavity and the plurality of air suction holes arranged on the surface of the recess are in communication, and an air pump is arranged inside the ship body.

[0018] By adopting the above technical scheme, the air pump can adsorb the air between the surface of the recess and the paving arrangement, which can avoid the local swelling of the paving arrangement on one hand, and on the other hand, the worker can make the paving arrangement adhere to the surface of the recess after unfolding, thereby avoiding the displacement of the paving arrangement during laying, and on the other hand, the rotating shaft and the convex ring part can be raised as a reference to quickly tighten the prefabricated blocks.

[0019] Optionally, vertical support seats are arranged on the upper surface of the ship body and at both ends of the recess, vertical beams are arranged above the support seats, a pulley capable of horizontal movement and rotation is arranged on the vertical beam, and the two limit positions of the pulley during horizontal movement are located on both sides of the vertical plane corresponding to the hinge center of the sliding plate.

[0020] By adopting the above technical scheme, the sliding plate can be expanded or retracted by using a single pulley combined with movement, when the sliding plate needs to be expanded, the pulley moves to the outermost position, the sliding plate is pulled by the winch and the steel wire rope, so that the sliding plate can cross the vertical plane where the hinge center is located, at this time, the sliding plate and the surface of the recess form an obtuse angle, then the steel wire rope is slowly loosened, and the sliding plate can be expanded outward under the action of its own gravity until it moves to the appropriate position; similarly, when the expanded sliding plate needs to be retracted, the pulley moves to the position close to the ship body, and the sliding plate is pulled by the winch and the steel wire rope, so that the sliding plate can cross the vertical plane where the hinge center is located, at this time, the sliding plate and the surface of the recess form an acute angle, then the steel wire rope is slowly loosened, and the sliding plate can be retracted to the area where the recess is located under the action of its own gravity; the expansion and retraction of the sliding plate can be realized without the help of hydraulic cylinders or multiple pulleys, which has the advantages of simple structure and convenient operation.

[0021] Optionally, the inside of the crossbeam is provided with a rotatable screw rod, the outer wall of the screw rod is provided with a moving block in a threaded connection mode, the moving block is slidably connected to the inside of the crossbeam and extends to the outside of the crossbeam at one end, a fixed shaft is fixed to the moving block, the pulley is connected to the fixed shaft through a bearing, and a limiting cover is arranged above the fixed shaft.

[0022] By adopting the above technical scheme, the winch is used as a power source, and the steel wire rope is used to realize the overturning operation of the sliding plate; the screw rod and the moving block can drive the pulley to reciprocate in the horizontal direction, and the limiting cover can prevent the steel wire rope from falling off the pulley, thereby improving the safety.

[0023] Optionally, the laying cloth comprises a lower geotextile and an upper composite woven cloth, and the geotextile and the composite woven cloth are sewn into an integral structure; the upper surface of the laying cloth is provided with a plurality of equally-spaced reinforcing bands, the length direction of the reinforcing band is consistent with the moving track of the laying cloth, a plurality of rope passing holes are reserved between the reinforcing band and the laying cloth, and a binding rope is connected in the rope passing hole.

[0024] By adopting the above technical scheme, the geotextile is a filament geotextile, which, in cooperation with the composite woven cloth, forms the laying cloth, so that the anti-tearing strength of the moving direction of the laying cloth is increased while the bank protection and filtration functions are ensured, the rope passing hole is used to pass the binding rope, and the binding rope is used to fix the prefabricated block to the laying cloth.

[0025] Optionally, the fixed guardrail is arranged at the edge position of the upper surface of the ship body, the movable guardrail is arranged on the surface of the sliding plate and can move with the sliding plate, the horizontal movable guard plate is arranged at the side wall position of the ship body and close to the movable guardrail, and the movable guardrail can abut against the guard plate when the sliding plate is overturned to the limit position.

[0026] By adopting the above technical scheme, the fixed guardrail and the movable guardrail can both achieve the safety protection effect, the movable guardrail can move to the lower position after the sliding plate is overturned, at this time, the movable guardrail can abut against the guard plate, so that the limiting effect of the sliding plate is realized, the further overturning of the sliding plate is avoided, the sliding plate can be reliably supported by the steel wire rope during the sinking process, and the safety is further improved.

[0027] Optionally, the prefabricated block is further provided with a concave groove downwardly recessed and matched with the convex ring of the rotating shaft at the center position of the upper and lower surfaces of the block, and the four peripheral edge positions of the prefabricated block are provided with rounded corners.

[0028] By adopting the technical scheme, the groove is matched with the convex ring on the rotating shaft to realize the rapid positioning of the prefabricated block, so that the paving efficiency of the prefabricated block is improved, and the positioning is accurate and the operation is convenient; the round corner is arranged at the peripheral edge position of the prefabricated block, so that the prefabricated block is driven to move forward by the paving cloth in the sinking process, the prefabricated block at the edge passes through the position of the rotating shaft by using the round corner structure, and the problem of jamming is avoided.

[0029] In summary, the present application has at least one of the following beneficial technical effects:

[0030] The present application sets the rotating shaft and the convex ring in the recess of the ship body, and combines the cooperation of the air suction hole and the air suction cavity, so that the friction is reduced during the movement of the paving cloth, the cloth body is prevented from being damaged, the rotating shaft convex ring is used as a positioning reference, the arrangement of the prefabricated block on the paving cloth is more orderly, and the paving quality and the construction efficiency are improved. At the same time, the paving cloth and the prefabricated block are fixed by the binding rope and the reinforcing belt structure, and the overall stability is further enhanced.

[0031] The present application designs the sliding plate as a reversible storage structure, and combines mechanisms such as pulleys, winches and guardrails to realize flexible opening and limiting, which not only improves the convenience and safety of operation, but also can be stored flat with the surface of the ship when not in use, avoiding space occupation and affecting ship operation, effectively solving the technical problems of messy prefabricated block positioning, paving cloth damage, and fixed sliding plate stiffness and inconvenient storage in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a perspective view of the present application;

[0033] Figure 2 is a sectional view of the present application;

[0034] Figure 3 is a sectional view of the mounting structure of the pulley of the present application;

[0035] Figure 4 is a structure diagram of the rotating shaft, the paving cloth and the prefabricated block during paving of the present application;

[0036] Figure 5 is a structure diagram of the present application in a state of being limited to rotate;

[0037] Figure 6 is a structure diagram of the paving cloth of the present application;

[0038] Figure 7 is a structure diagram of the prefabricated block of the present application.

[0039] BRIEF DESCRIPTION OF DRAWINGS:

[0040] 1, hull; 2, support seat; 3, steel wire rope; 4, sliding plate; 5, winch; 6, fixed guardrail; 7, winding drum; 8, rotating shaft; 801, convex ring; 9, paving cloth; 901, geotextile; 902, composite woven cloth; 10, recess; 11, air pump; 12, air suction hole; 13, air suction cavity; 14, guard plate; 15, movable guardrail; 16, lead screw; 17, cross beam; 18, moving block; 19, fixed shaft; 20, pulley; 21, limiting cover; 22, positioning wheel; 2201, positioning groove; 23, hydraulic cylinder; 24, lifting plate; 25, positioning taper block; 26, reinforcing belt; 27, rope passing hole; 28, rope binding; 29, prefabricated block; 2901, groove. DETAILED DESCRIPTION

[0041] The application will be further described in detail below with reference to the accompanying drawings.

[0042] As Figures 1-7 shown, the application discloses a construction device for prefabricated block flexible sinking mat paving, which comprises:

[0043] The hull 1 is a conventional sinking mat laying boat structure in the prior art, for example, a main anchor is arranged at the rear side of the hull 1, so that the hull can move horizontally along the direction perpendicular to the water flow during sinking mat paving; a control room is arranged on the hull 1, a small crane is installed on the hull 1 for hoisting the prefabricated block 29, and a sonar and other structures are arranged below the hull 1, which are conventional arrangements in the prior art and will not be described in detail here. A recess 10 is arranged on one side of the upper surface of the hull 1, and air suction holes 12 are uniformly arranged on the surface of the recess 10. The recess 10 is used to accommodate the sliding plate 4, so that the sliding plate 4 can be hidden in the position of the recess 10 after being accommodated, and the surface of the sliding plate 4 is flush with the surface of the hull, which does not affect the normal walking of personnel. In addition, the recess 10 can prevent the sinking mat paving cloth 9 and the prefabricated block 29 from moving left and right due to wind and waves or weather during the sinking mat paving process, thereby achieving the limiting effect.

[0044] The rotatable winding drum 7 is installed above the hull 1, two supports are arranged on the surface of the hull 1, the winding drum 7 is installed on the supports through bearings, and is driven by a motor to realize the rotation of the winding drum 7. The winding drum 7 can realize the winding and unwinding of the sinking mat paving cloth 9.

[0045] The sinking mat paving cloth 9 is wound on the outer wall of the winding drum 7.

[0046] The rotating shaft 8 is rotatably installed in the ship body 1, and the outer wall of the rotating shaft 8 extends to the upper surface of the recess 10, the rotating shaft 8 is multiple and is equally spaced on the ship body 1, a plurality of convex rings 801 are arranged on the outer wall of the rotating shaft 8 and along the axis direction of the rotating shaft 8, the center lines of the rotating shaft 8 and the center line of the winding drum 7 are parallel to each other, and the center lines of the two convex rings 801 corresponding to the adjacent two rotating shafts 8 are parallel to the movement track of the paving arrangement 9.

[0047] The sliding plate 4 is arranged at the recess 10 of the ship body 1, and one end is hinged to the edge of the ship body 1, and can be turned to the outside of the ship body 1 when subjected to external force; the upper surface of the sliding plate 4 is flush with the upper surface of the ship body 1 when being at the recess 10.

[0048] Specifically, the rotating shaft 8 is installed in the ship body 1 through a bearing, and the height dimension of the rotating shaft 8 extending to the upper surface of the recess 10 is less than the radius of the rotating shaft 8, so as to avoid the problem of jamming of the paving arrangement 9 during movement due to excessive exposure of the rotating shaft 8, and also to reduce the friction of the paving arrangement 9 during movement due to the rotation of the rotating shaft 8, a positioning wheel 22 rotating synchronously with the rotating shaft 8 is installed at the end of the rotating shaft 8, the positioning wheel 22 is connected with the rotating shaft 8 through a key strip to rotate synchronously, a plurality of positioning grooves 2201 are uniformly distributed in the circumferential direction of the positioning wheel 22, and the positioning grooves 2201 are V-shaped grooves; a plurality of positioning conical blocks 25 vertically synchronously lifting are installed in the ship body 1, the taper of the positioning conical block 25 is consistent with the included angle of the V-shaped groove, wherein a hydraulic cylinder 23 is installed at the inner position of the ship body 1, the end of the telescopic rod of the hydraulic cylinder 23 is connected with a lifting plate 24, the lifting plate 24 can move up and down when driven by the hydraulic cylinder 23, the positioning conical block 25 is installed on the surface of the lifting plate 24, when the lifting plate 24 moves to the upper limit position, the positioning conical block 25 can be inserted into the corresponding positioning groove 2201, since the positioning groove 2201 is a V-shaped groove and the positioning conical block 25 is a conical structure, the jamming phenomenon can be avoided during the insertion process, which is beneficial to improve the positioning effect. After the rotating shaft 8 is positioned, the rotating shaft 8 cannot rotate, which can avoid the problem of falling down caused by the staff stepping on the rotating shaft 8, and after the rotating shaft 8 is positioned, the operator can correspondingly place the prefabricated block 29 above the convex ring 801, since the rotating shaft 8 is fixed, the convex ring 801 also remains in a stationary state, which can avoid the problem of deviation of the prefabricated block 29 after paving.

[0049] Specifically, the cross section of the convex ring 801 is arc-shaped at both ends, and a transition round corner is arranged at the connection between the convex ring 801 and the rotating shaft 8, the convex ring 801 and the rotating shaft 8 are integrally formed, and the transition round corner can avoid the problem of scratching of the paving arrangement 9 caused by the sharp edges on the surface of the rotating shaft 8.

[0050] Specifically, the suction cavity 13 is arranged inside the ship body 1 and below the recess 10, the suction cavity 13 is in communication with the plurality of air suction holes 12 arranged on the surface of the recess 10, and the air pump 11 is arranged inside the ship body 1. After the air pump 11 is started, the air in the area above the recess 10 can enter the suction cavity 13 from the air suction holes 12 and be finally discharged outward, so that the problem of local bulging of the paving cloth 9 can be avoided. On the other hand, the staff can make the paving cloth 9 adhere to the surface of the recess 10 after the paving cloth 9 is unfolded, so as to avoid displacement of the paving cloth 9 during paving. On the other hand, the shaft 8 and the convex ring 801 can be raised as a reference for quickly tightening the precast block 29.

[0051] Specifically, the support seat 2 is arranged vertically on the upper surface of the ship body 1 and at both ends of the recess 10, the support seat 2 is welded or bolted to the ship body 1, the cross beam 17 is arranged above the support seat 2, the pulley 20 capable of moving horizontally and rotating is arranged on the cross beam 17, the rotation center of the pulley 20 is parallel to the surface of the ship body 1, and the two limit positions of the pulley 20 when moving horizontally on the cross beam 17 are respectively located on both sides of the vertical plane corresponding to the hinge center of the sliding plate 4. More specifically, the rotatable lead screw 16 is arranged inside the cross beam 17, the moving block 18 is threadedly connected to the outer wall of the lead screw 16, the moving block 18 is slidingly connected inside the cross beam 17 and extends outward from one end of the cross beam 17, the fixed shaft 19 is fixed to the moving block 18, the pulley 20 is connected to the fixed shaft 19 through a bearing, and the limiting cover 21 is arranged above the fixed shaft 19. The winch 5 is arranged on the ship body 1, the steel wire rope 3 is wound around the output shaft of the winch 5, and the other end of the steel wire rope 3 is wound around the pulley 20 and connected to the sliding plate 4.

[0052] Specifically, the paving cloth 9 comprises the lower geotextile 901 and the upper composite woven cloth 902, and the geotextile 901 and the composite woven cloth 902 are sewn into an integrated structure. The upper surface of the paving cloth 9 has a plurality of equally spaced reinforcing belts 26, the length direction of the reinforcing belt 26 is consistent with the movement track of the paving cloth 9, a plurality of rope passing holes 27 are reserved between the reinforcing belt 26 and the paving cloth 9, and the binding rope 28 is connected in the rope passing hole 27. In actual paving, the binding rope 28 can be previously arranged in the rope passing hole 27, or the binding rope 28 is directly connected to the rope passing hole 27 by sewing. The precast block 29 can be placed above a single rope passing hole 27 or two rope passing holes 27, and the precast block 29 is tightened by a single binding rope 28 or two binding ropes 28.

[0053] Specifically, the fixed guardrail 6 is installed at the edge of the upper surface of the hull 1, and the movable guardrail 15 is installed on the surface of the slide plate 4 and can move with the slide plate 4. The horizontally movable guard plate 14 is arranged at the position of the side wall of the hull 1 and close to the movable guardrail 15. When the slide plate 4 is turned out to the limit position, the movable guardrail 15 can abut against the guard plate 14. The guard plate 14 can be horizontally moved by the oil cylinder driving mode. The rubber pad can be arranged on the surface of the guard plate 14 to protect the movable guardrail 15 when the movable guardrail 15 contacts the guard plate 14. The fixed guardrail 6 and the movable guardrail 15 can both play the safety protection effect. Since the slide plate 4 can be turned, the movable guardrail 15 can move to the lower position after the slide plate 4 is turned. At this time, the movable guardrail 15 can abut against the guard plate 14 to limit the slide plate 4, so as to avoid further turning of the slide plate 4. Meanwhile, the steel wire rope 3 can provide reliable support for the slide plate 4 during the sinking process, so as to further improve the safety.

[0054] Specifically, the precast block 29 is provided with a recess 2901 downwardly recessed and matched with the convex ring 801 of the rotating shaft 8 at the center positions of the upper and lower surfaces of the block. The precast block 29 is provided with a round corner at the four peripheral edge positions. In addition, in order to facilitate the tightening of the precast block 29, an opening groove can be arranged on the two sides of the precast block 29, and the binding rope 28 can be arranged in the opening groove to further tighten the precast block 29.

[0055] During construction, first, the laying cloth 9 is pre-wound on the outer wall of the reel 7 above the hull 1 in the construction preparation stage. The reel 7 can be wound and unwound by the motor driving. The slide plate 4 is stored in the recessed part 10 of the hull 1 in the non-use state. At this time, the surface of the slide plate 4 is flush with the surface of the hull 1, which will not affect the normal walking and operation of the workers on the ship.

[0056] When the sinking operation starts, the winch 5 is started to drive the pulley 20 through the steel wire rope 3 to move and pull the slide plate 4, so that the slide plate 4 is gradually turned out and unfolded around the hinge point. The unfolded slide plate 4 is communicated with the recessed part 10 of the hull 1 to form a smooth lowering channel, so as to facilitate the overall sliding of the laying cloth 9 and the precast block 29 to the water surface. At this time, the fixed guardrail 6 at the edge of the hull 1 cooperates with the movable guardrail 15 on the slide plate 4. The movable guardrail 15 abuts against the guard plate 14 of the side wall after the slide plate 4 is unfolded, so as to limit and protect the slide plate 4 and ensure the safety and stability of the slide plate 4 during use.

[0057] Subsequently, the drum 7 releases the paving cloth 9, which gradually unfolds with the slide plate 4 through the recess 10. The workers place the precast blocks 29 on the paving cloth 9 according to the reference of the convex ring 801 on the rotating shaft 8. The groove 2901 under the precast block 29 cooperates with the convex ring 801 to achieve rapid positioning and avoid lateral sliding of the precast block 29 on the cloth. The binding rope 28 passes through the rope hole 27 on the paving cloth 9 to firmly bind the precast block, thereby ensuring the stability of the overall paving. At the same time, the air pump 11 inside the ship body 1 is turned on, and air is sucked into the air suction chamber 13 through the air suction hole 12 on the surface of the recess 10, so that the paving cloth 9 is tightly attached to the surface of the recess 10. This adsorption effect not only prevents the paving cloth 9 from swelling or shifting due to wind and waves, but also slightly bulges the rotating shaft 8 and the convex ring 801 part, which serves as a reference to improve the paving accuracy of the precast block 29.

[0058] During the laying of the mattress, the front end of the paving cloth 9 is connected to the fixed anchor pile on the shore, and the ship body 1 moves away from the shore. At this time, the paving cloth 9 and the precast block 29 can move together, and the rotating shaft 8 in the recess 10 rotates with the movement of the cloth, reducing friction and preventing the cloth from being scratched or blocked. Finally, as the drum 7 continues to unwind, the paving cloth 9 and the precast block 29 above it enter the water smoothly under the guidance of the slide plate 4, completing the paving work of the flexible mattress.

[0059] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A construction device for flexible recessed paving of precast blocks, characterized in that, include: The hull (1) has a recess (10) on one side of its upper surface, and the surface of the recess (10) has evenly distributed air intake holes (12). A rotatable drum (7) is mounted above the hull (1); Lay out the fabric (9), which is wound around the outer wall of the roll (7); A rotating shaft (8) is rotatably installed inside the hull (1), and the upper end of the outer wall of the rotating shaft (8) extends to the upper surface of the recess (10). There are multiple rotating shafts (8) and they are evenly distributed on the hull (1). Multiple convex rings (801) are evenly distributed on the outer wall of the rotating shaft (8) along its axial direction. The center line of the rotating shaft (8) is parallel to the center line of the drum (7). The line connecting the centers of the two convex rings (801) corresponding to two adjacent rotating shafts (8) is parallel to the movement trajectory of the laying fabric (9). The sliding plate (4) is located in the recess (10) of the hull (1) and one end is hinged to the edge of the hull (1). When subjected to external force, it can be flipped to the outside of the hull (1). When the sliding plate (4) is in the recess (10) position, its upper surface is flush with the upper surface of the hull (1). It also includes a precast block (29), the center of the upper and lower surfaces of the precast block (29) is provided with a groove (2901) that is recessed downward and matches the convex ring (801) of the rotating shaft (8), and the edges of the precast block (29) are provided with rounded corners.

2. The construction device for flexible recessed paving of precast blocks according to claim 1, characterized in that, The rotating shaft (8) is installed inside the hull (1) via bearings. The height of the shaft extending to the upper surface of the recess (10) is less than the radius of the rotating shaft (8). A positioning wheel (22) that rotates synchronously with the rotating shaft (8) is installed at the end of the rotating shaft (8). Several positioning grooves (2201) are evenly distributed in the circumferential direction of the positioning wheel (22). The positioning grooves (2201) are V-shaped grooves. Multiple positioning cones (25) that can be vertically and synchronously raised and lowered are installed inside the hull (1). The taper of the positioning cones (25) is consistent with the angle between the cones and the V-shaped grooves.

3. The construction device for flexible recessed paving of precast blocks according to claim 1, characterized in that, The cross-section of the convex ring (801) has arc-shaped contours at both ends, and the connection between the convex ring (801) and the rotating shaft (8) is provided with a transition fillet.

4. The construction device for flexible recessed paving of precast blocks according to claim 1, characterized in that, An air intake chamber (13) is provided inside the hull (1) and below the recess (10). The air intake chamber (13) is connected to a plurality of air intake holes (12) opened on the surface of the recess (10). An air pump (11) is installed inside the hull (1).

5. A construction device for flexible recessed paving of precast blocks according to claim 1, characterized in that, A vertically arranged support seat (2) is installed on the upper surface of the hull (1) and at both ends of the recess (10). A crossbeam (17) is installed above the support seat (2). A pulley (20) that can move horizontally and rotate is provided on the crossbeam (17). When the pulley (20) moves horizontally on the crossbeam (17), its two extreme positions are located on both sides of the vertical plane corresponding to the hinge center of the slide plate (4).

6. A construction device for flexible recessed paving of precast blocks according to claim 5, characterized in that, A rotatable lead screw (16) is installed inside the crossbeam (17). A movable block (18) is threadedly connected to the outer wall of the lead screw (16). The movable block (18) is slidably connected inside the crossbeam (17) and one end extends outward from the crossbeam (17). A fixed shaft (19) is fixed on the movable block (18). The pulley (20) is connected to the fixed shaft (19) through a bearing. A limit cover (21) is installed above the fixed shaft (19).

7. A construction device for flexible recessed paving of precast blocks according to claim 6, characterized in that, It also includes a winch (5) installed on the hull (1), the output shaft of which is wound with a wire rope (3), the other end of which passes over a pulley (20) and is connected to a slide plate (4).

8. A construction device for flexible recessed paving of precast blocks according to claim 1, characterized in that, The fabric (9) includes a lower geotextile (901) and an upper composite woven fabric (902). The geotextile (901) and the composite woven fabric (902) are sewn together as a whole. The upper surface of the fabric (9) has multiple equally spaced reinforcing strips (26). The length direction of the reinforcing strips (26) is consistent with the movement trajectory of the fabric (9). Multiple rope holes (27) are reserved between the reinforcing strips (26) and the fabric (9). A binding rope (28) is connected in the rope hole (27).

9. A construction device for flexible recessed paving of precast blocks according to claim 1, characterized in that, It also includes a fixed guardrail (6) installed on the edge of the upper surface of the hull (1) and a movable guardrail (15) installed on the surface of the slide (4) and capable of moving with the slide (4). A horizontally movable guard plate (14) is provided on the side wall of the hull (1) and near the movable guardrail (15). When the slide (4) is flipped outward to the extreme position, the movable guardrail (15) can abut against the guard plate (14).

Images