Sediment covering material laying device and working method

Abstract

The application discloses a bottom mud covering material laying device, which is installed on a ship and comprises a covering blanket, counterweight balls being flexibly connected to two long edges of the covering blanket in a spaced and symmetrical manner; a support frame, the counterweight balls on each side of the covering blanket being arranged in a row on the support frame; two delivery mechanisms, the delivery mechanisms being installed at one end of the row of counterweight balls, the delivery mechanisms comprising a set of opposite and spaced rotating wheels, wherein the set of rotating wheels exerts force on the counterweight balls entering the spaced areas between the rotating wheels through reverse rotation, so that the counterweight balls have initial speed and pull the covering blanket to move linearly; and a conveying mechanism, the conveying mechanism being used for pushing the frontmost counterweight ball of each row into the delivery mechanism one by one. The application further discloses a working method of the bottom mud covering material laying device. The device can efficiently complete the laying work of the bottom mud covering material, and the laying effect is better than that of other laying modes.

Description

Technical Field

[0001] This invention relates to the field of water pollution treatment technology, and more specifically to a device and method for laying sediment covering material. Background Technology

[0002] Bottom sediment is an important component of the aquatic ecological environment of urban rivers and reservoirs. There is a constant exchange of materials between the bottom sediment and the overlying water, resulting in the accumulation of large amounts of substances such as heavy metals, nitrogen and phosphorus, and persistent organic pollutants. The concentration of various pollutants in the water-sediment system is in dynamic equilibrium. Once the bottom sediment environment is disturbed, pollutants will return to the water through desorption and diffusion, causing secondary pollution. In order to control the pollution or potential pollution risk of bottom sediment to river water, and considering the characteristics of bottom sediment pollution in urban rivers, bio-mat remediation technology has been frequently used in recent years for the treatment of bottom sediment pollution in rivers and reservoirs.

[0003] Biofilm remediation technology involves laying biofilms at the bottom of polluted water bodies. The biofilms isolate the sediment layer from the water layer to a certain extent. After a period of stabilization, plants can grow on the formed biofilm layer, solving the problem of sediment accumulation in polluted riverbeds. Chinese Patent CN107285582B discloses a cover blanket and its laying method for in-situ remediation of heavy metal-contaminated sediment. This cover blanket consists of four layers from bottom to top: a bottom layer, a lower layer, an upper layer, and a surface layer. It is laid manually or mechanically in rivers and reservoirs. This type of cover blanket has good environmental remediation effects. However, the laying method still mainly relies on manual labor with machinery as a supplement. Chinese patent CN218579752U discloses a device for laying bottom mud covering materials. By setting a winch, frame, pulley, gantry and bio-mat rolling mechanism at the stern of the laying vessel, the bio-mat can be laid. However, since the bio-mat rolling mechanism is only completed by the winch and pulley system, the laying can only be completed when the laying vessel is stationary or at low speed, which is not efficient. Conventional large-scale laying of bio-mat still requires a lot of manual labor and the cooperation of ships.

[0004] Therefore, there is an urgent need to propose a new type of substrate covering material laying device and application method. Summary of the Invention

[0005] One objective of this invention is to provide a device and method for laying bottom sediment covering material, which can efficiently lay bio-mat and the laid bio-mat is not easily moved by water flow disturbance.

[0006] To achieve these and other advantages according to the invention, in a first aspect, the invention provides a sediment cover material laying device, installed on a ship, comprising: a cover blanket having counterweight balls flexibly connected at intervals and symmetrically along its two long sides; a support frame on which the counterweight balls on each side of the cover blanket are arranged in a row; two delivery mechanisms corresponding to one end of the row of counterweight balls, each delivery mechanism including a set of opposing and spaced rotating wheels, wherein the set of rotating wheels exerts a force on the counterweight balls entering their spaced areas by rotating in opposite directions, giving the counterweight balls an initial velocity and pulling the cover blanket in a linear motion; and a conveying mechanism for pushing the first counterweight ball of each row into the delivery mechanism one by one.

[0007] Preferably, the support frame includes two sets of spaced counterweight ball slots parallel to the ship's axis. Each counterweight ball slot is a pair of opposing and spaced L-shaped beams. Counterweight balls on the same side are arranged one by one in the counterweight ball slot. The counterweight balls are supported by the two opposing bottom edges of the counterweight ball slot. The connection structure between the counterweight balls and the covering blanket passes through the gap between the two L-shaped beams of the counterweight ball slot. A row of counterweight balls enters the delivery mechanism one by one from the end of the counterweight ball slot.

[0008] Preferably, a set of rotating wheels is lower than the end of the counterweight ball support groove, and a set of spaced and parallel guide rails are installed between the end of the counterweight ball support groove and the corresponding set of rotating wheels. The counterweight ball falls from the end of the counterweight ball support groove into the spaced area of ​​the set of rotating wheels under the joint support of the set of guide rails.

[0009] Preferably, the conveying mechanism is installed above the counterweight ball tray. The conveying mechanism includes two fixed seats, a set of guide rods is fixedly connected between the two fixed seats, and a threaded screw is connected to the two fixed seats by a bearing. One end of the threaded screw is connected to a screw motor. A slider is fitted on both the threaded screw and the guide rod. A pushing block is connected below the slider. The pushing block extends into the counterweight ball tray and abuts against the counterweight ball farthest from the delivery mechanism. When the pushing block moves horizontally towards the delivery mechanism, it pushes a row of counterweight balls forward.

[0010] Preferably, the delivery mechanism further includes two mounting bases, each mounting base having a rotating wheel connected to a bearing, and a first connecting frame connected to the upper part of the two mounting bases. A rotating mechanism is connected to the upper part of the first connecting frame, wherein the rotating part of the rotating mechanism is connected to the first connecting frame, and the fixed part of the rotating mechanism is connected to the support frame.

[0011] Preferably, the top of the first connecting frame is connected to a rotating support, the rotating mechanism includes a rotating bearing, the rotating bearing includes a bearing inner ring and a bearing outer ring nested within each other, the top of the bearing inner ring is fixed to a bearing mounting seat, the bottom of the bearing outer ring is connected to the rotating support, the outer circumference of the bearing outer ring is provided with a toothed groove, a rotating motor is mounted on the bearing mounting seat, the rotor of the rotating motor is driven by rotating teeth, and the rotating teeth mesh with the toothed groove on the outer circumference of the bearing outer ring.

[0012] Preferably, a baffle shaft is installed on the first connecting frame, one end of the baffle shaft is connected to a baffle motor, the baffle shaft is connected to a baffle downwards, and the baffle is located between a set of guide rails. When the counterweight ball slides down the guide rail, the counterweight ball is stopped by the downward baffle. After the baffle motor controls the baffle to rotate and move away, the counterweight ball continues to slide down the guide rail.

[0013] Preferably, the middle part of the covering blanket is overlapped multiple times, with the overlap line parallel to the long side of the covering blanket, wherein the width of the overlapping covering blanket is smaller than that of the covering blanket before overlapping.

[0014] Preferably, the counterweight ball includes a counterweight ball shell and a threaded cap, the counterweight ball shell has an opening that is threadedly connected to the threaded cap, and the counterweight ball shell is filled with counterweight.

[0015] Secondly, the present invention provides a method for laying bottom mud covering material, applied to a bottom mud covering material laying device, comprising the following steps:

[0016] S1. Fill the counterweight sphere shell with sand and gravel as counterweight, and connect connecting cables of the same length to all counterweight spheres;

[0017] S2. Tie the ends of the connecting cables symmetrically and at intervals to the two long sides of the covering blanket, and then insert the counterweight balls in pairs into the corresponding counterweight ball slots from the ends.

[0018] S3. The covering blanket is hung by rows of counterweight balls on both sides, and a delivery mechanism is installed at the front end of the counterweight ball slot.

[0019] S4. Start the two sets of rotating wheels. The ship travels in a straight line to the laying starting point and travels in a straight line at a constant speed. The conveying mechanism pushes the first ball in each counterweight ball slot into the delivery mechanism.

[0020] S5. The counterweight ball falls and slides along the guide rail, and is stopped by the baffle.

[0021] S6. After the rotating mechanism horizontally rotates the throwing mechanism holding the counterweight ball to the designed throwing angle, the baffle shaft rotates to move the baffle away, the counterweight ball continues to slide along the guide rail, and is thrown out under the action of a set of rotating wheels. The set of counterweight balls move simultaneously and in opposite directions.

[0022] S7. The rotating mechanism rotates the unloaded delivery mechanism back to the center, the baffle shaft rotates to return the baffle to its original position, and the conveying mechanism pushes the next set of counterweight balls into the delivery mechanism.

[0023] S8. Repeat steps S5 to S7 to complete the laying of a whole covering blanket.

[0024] The present invention has at least the following beneficial effects:

[0025] First, the bottom sediment covering material laying device of the present invention throws out pairs of counterweight balls at an angle through a throwing mechanism. The two outward-pointing counterweight balls drive the connected covering blanket. The layered covering blanket is pulled out in the air by the counterweight balls. As the ship moves forward, the throwing mechanism and the conveying mechanism continuously throw out the counterweight balls one group at a time, and finally lay a whole covering blanket. Only multiple parallel covering blankets need to be laid on the same ship to complete the biological blanket laying work in a large area of ​​water. The efficiency of the present invention is greatly improved compared with manual laying or other laying devices and forms.

[0026] Secondly, in the bottom mud covering material laying device of the present invention, the counterweight ball thrown into the water drives the covering blanket to fall into the water. During the fall, the covering blanket remains straight due to the stretching effect of the two rows of counterweight balls on the long side. The falling process will not be affected by the water flow and will not curl up, so it can effectively cover the bottom mud layer.

[0027] Third, the bottom mud covering material laying device of the present invention, the covering blanket covering the bottom mud layer, is still connected to the counterweight ball, and is not easily lifted by water flow disturbance after laying, so the covering effect on the bottom mud layer is better than other forms of covering methods.

[0028] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a bottom mud covering material laying device in one technical solution of the present invention;

[0030] Figure 2 This is a schematic diagram of the blanket laying operation in one technical solution of the present invention;

[0031] Figure 3 This is a side view of a bottom mud covering material laying device in one technical solution of the present invention;

[0032] Figure 4 This is a schematic diagram of the cross-section of the counterweight ball support groove in one technical solution of the present invention;

[0033] Figure 5 This is a schematic diagram of a conveying mechanism in one technical solution of the present invention;

[0034] Figure 6 This is a schematic diagram of the installation of the conveying mechanism and the counterweight ball support groove in one technical solution of the present invention;

[0035] Figure 7 This is a schematic diagram of the delivery mechanism in one technical solution of the present invention;

[0036] Figure 8 This is a schematic diagram showing the disassembly of the delivery mechanism in one technical solution of the present invention;

[0037] Figure 9 This is a schematic diagram of a set of rotating wheels in one technical solution of the present invention;

[0038] Figure 10 This is a schematic cross-sectional view of the rotating mechanism in one technical solution of the present invention;

[0039] Figure 11 This is a schematic diagram of the counterweight ball entering the delivery mechanism in one technical solution of the present invention;

[0040] Figure 12 This is a side view of the delivery mechanism in one technical solution of the present invention;

[0041] Figure 13 This is a schematic diagram of the cross-section of the overlapping covering blanket in one technical solution of the present invention;

[0042] Figure 14 This is a schematic diagram of the unfolding of the covering blanket in one technical solution of the present invention;

[0043] Figure 15 This is a schematic diagram of the counterweight ball in one technical solution of the present invention.

[0044] Legend: 1-Ship, 2-Covering blanket, 20-Edge hole, 3-Counterweight ball, 301-Counterweight ball shell, 302-Counterweight, 303-Threaded cap, 31-Connecting cable, 4-Feeding mechanism, 40-Rotating mechanism, 401-Rotating motor, 4011-Rotating gear, 402-Rotating bearing, 4021-Bearing inner ring, 4022-Bearing outer ring, 41-Rotating wheel, 411-Rotating wheel motor, 42-First Connecting frame, 421-rotating support, 422-second connecting frame, 43-guide rail, 44-baffle, 441-baffle motor, 442-baffle shaft, 5-conveying mechanism, 50-fixed seat, 500-screw motor, 501-threaded screw, 502-guide rod, 51-slider, 511-push block, 6-support frame, 61-frame transverse beam, 62-frame longitudinal beam, 620-counterweight ball support groove. Detailed Implementation

[0045] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can implement it based on the description.

[0046] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0047] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are conventional methods, and the structures and components described are commercially available. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to fixed connection or setting, detachable connection or setting, or integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0048] like Figures 1-15As shown, the present invention provides a bottom mud covering material laying device, installed on a ship 1, comprising: a covering blanket 2, on which counterweight balls 3 are flexibly connected at intervals and symmetrically on the two long sides of the blanket body; a support frame 6, on which the counterweight balls 3 on each side of the covering blanket 2 are arranged in a row; two delivery mechanisms 4, which are installed at one end of the row of counterweight balls 3 respectively, and each delivery mechanism 4 includes a set of opposite and spaced rotating wheels 41, wherein the set of rotating wheels 41 applies a force to the counterweight balls 3 entering their spaced area by rotating in opposite directions, so that the counterweight balls 3 have an initial velocity and pull the covering blanket 2 to move in a straight line; and a conveying mechanism 5, which is used to push the first counterweight ball 3 of each row into the delivery mechanism 4 one by one.

[0049] In this technical solution, the covering blanket 2 is a readily available mesh or blanket product. A row of edge holes 20 are spaced apart on both long sides of the covering blanket 2. The edge holes 20 can be fitted with rings to prevent tearing under stress. The counterweight ball 3 is a solid sphere. The outer shell of the counterweight ball 3 is made of metal or other hard materials. The counterweight ball 3 has a certain deformation capacity and can produce elastic or plastic deformation when compressed. The counterweight ball 3 is connected to the covering blanket 2 by a connecting cable 31. The connecting cable 31 can be a metal chain or rope. The end of the connecting cable 31 is hung on the edge hole 20.

[0050] In this technical solution, the support frame 6 is a rigid beam and column structure that can be assembled using bolts or other joints and is readily available in the market. It is installed on the vessel 1 before the laying operation. The assembled support frame 6 includes at least two sets of longitudinal beams 62 parallel to the axis of the vessel 1. Each longitudinal beam 62 can be in the form of two spaced longitudinal beams, with the interval between them smaller than the diameter of the counterweight balls 3. The spaced portions of the two longitudinal beams jointly support the counterweight balls 3 arranged in a row. The spaced positions of the two longitudinal beams facilitate the passage of a row of connecting cables 31. The covering blanket 2 is hung on the support frame 6 via the counterweight balls 3 arranged on both sides. The covering blanket 2 is tightly stacked in a wavy pattern along its length. Optionally, such as... Figure 1 , Figure 3 As shown, the covering blanket 2 between every two sets of counterweight balls 3 is folded once on the support frame 6. The length L of the covering blanket 2 that can be laid at one time can be simplified as L=2×h×(n-1), where h is the height of the counterweight balls 3 from the surface of the ship 1, and n is the number of counterweight balls 3 in each row. For a ship 1 of a standard size, the laying length in one go can easily reach more than 200m, which greatly improves the laying efficiency.

[0051] In this technical solution, the delivery mechanism 4 is installed at the front end of a row of counterweight balls 3. Two rotating wheels 41 in the delivery mechanism 4 are arranged horizontally at intervals. The two rotating wheels 41 rotate in opposite directions under the drive of the rotating wheel motor 411. The interval between the two rotating wheels 41 applies pressure to the counterweight balls 3 entering it and provides friction. The counterweight balls 3 are thrown out by inertia under the action of the rotating wheels 41 on both sides. The structure of the rotating wheels 41 and the rotating wheel motor 411 does not collide or conflict with the connecting cable 31 and the covering blanket 2. A set of counterweight balls 3 are simultaneously thrown out of inertia. The direction of the counterweight balls 3 can be parallel to the forward path of the ship 1 or obliquely thrown to the outside of the ship 2. The set of counterweight balls 3 moving in opposite directions will unfold the covering blanket 2 before entering the water. It should be noted that the throwing time of each set of counterweight balls 3 needs to be precisely controlled to avoid dragging the already thrown covering blanket 2 due to failure to throw the balls in time. The conveying mechanism 5 can be in the form of a screw slide table or other forms such as a robot to push the counterweight balls 3 into the rotating wheels 41 one by one. This invention uses a delivery mechanism 4 to deliver pairs of counterweight balls 3 in a straight line. The two counterweight balls 3, thrown outward at an angle, pull the connected covering blanket 2 to unfold. The ship 1 can complete the laying task by moving forward at a constant speed, which greatly improves efficiency compared to other laying devices and methods. Secondly, the counterweight balls 3 thrown into the water pull the covering blanket 2 to fall into the water. During the fall, the covering blanket 2 will not curl due to the water flow due to the stretching effect of the two rows of counterweight balls 3 on the long side. The covering blanket 2 can effectively and evenly cover the bottom mud layer. Finally, the covering blanket 2 in this invention is always connected to the counterweight balls 3, and is not easily lifted by the water flow after laying. The covering effect on the bottom mud layer is better than other forms of covering methods.

[0052] In another technical solution, the support frame 6 includes two sets of spaced counterweight ball support slots 620 parallel to the axis of the ship 1. Each counterweight ball support slot 620 is a pair of opposing and spaced L-shaped beams. Counterweight balls 3 on the same side are arranged one by one within the counterweight ball support slot 620. The counterweight balls 3 are supported by the two opposing bottom edges of the counterweight ball support slot 620. The connection structure between the counterweight balls 3 and the covering blanket 2 passes through the space between the two L-shaped beams of the counterweight ball support slot 620. A row of counterweight balls 3 enters the delivery mechanism 4 one by one from the end of the counterweight ball support slot 620, as shown below. Figure 4 As shown, the counterweight ball support groove 620 consists of two L-shaped beams connected in parallel to the longitudinal beam 62 of the frame. The counterweight ball support groove 620 uses the edges of the bottom of the two L-shaped beams to support the counterweight ball 3, and the connecting cable 31 connecting the counterweight ball 3 is not affected by the counterweight ball support groove 620.

[0053] In another technical solution, a set of rotating wheels 41 is lower than the end of the counterweight ball support 620. A set of spaced and parallel guide rails 43 is installed between the end of the counterweight ball support 620 and the corresponding set of rotating wheels 41. The counterweight ball 3 falls from the end of the counterweight ball support 620 into the space between the guide rails 43, and is guided by the combined support of the guide rails 43 into the spaced area of ​​the set of rotating wheels 41. In this technical solution, as... Figure 11 , Figure 12 As shown, the rotating wheel 41 is lower than the counterweight ball support groove 620. The guide rail 43 is a plate or round steel frame. A set of guide rails 43 is connected to the delivery mechanism 4. The set of guide rails 43 is spaced apart. The connecting cable 31 passes through the gap between the guide rails 43. The counterweight ball 3, which is pushed out from the end of the counterweight ball support groove 620, is supported by the upper edge of the set of guide rails 43. Under its own weight and the guidance of the guide rails 43, it enters the gap between the set of rotating wheels 41.

[0054] In another technical solution, the conveying mechanism 5 is installed above the counterweight ball tray 620. The conveying mechanism 5 includes two fixed seats 50, a set of guide rods 502 fixedly connected between the two fixed seats 50, and a threaded screw 501 bearing-connected between the two fixed seats 50. One end of the threaded screw 501 is drivenly connected to a screw motor 500. A slider 51 is fitted on both the threaded screw 501 and the guide rods 502. A pushing block 511 is connected below the slider 51. The pushing block 511 extends into the counterweight ball tray 620 and abuts against the counterweight ball 3 farthest from the delivery mechanism 4. When the pushing block 511 moves horizontally towards the delivery mechanism 4, it pushes a row of counterweight balls... 3. In this technical solution, two fixed seats 50 are fixed to the support frame 6. The slider 51, threaded screw 501, guide rod 502, fixed seat 50, and screw motor 500 are all commercially available or easily processed finished components. The slider 51 has a through hole that matches and fits the threaded screw 501. The slider 51 has balls that can circulate along the thread of the threaded screw 501. The screw motor 500 is a finished servo motor, and its moving part is connected to the threaded screw 501 through a coupling or other device. When the threaded screw 501 rotates, the slider 51 moves under the combined action of the threaded screw 501 and the guide rod 502. A pushing block 511 is installed at the lower part of the slider 51. Figure 6 As shown, the push block 511 extends down through the interval within the longitudinal beam 62 of the frame and down into the counterweight ball slot 620. The push block 511 acts on the last counterweight ball 3, pushing a row of counterweight balls 3. By precisely controlling the operation of the lead screw motor 500, the counterweight balls 3 are pushed down one by one.

[0055] In another technical solution, the delivery mechanism 4 further includes two mounting bases 412, each mounting base 412 bearing a rotating wheel 41. The upper part of the two mounting bases 412 is connected to a first connecting frame 42, and the upper part of the first connecting frame 42 is connected to a rotating mechanism 40. The rotating part of the rotating mechanism 40 is connected to the first connecting frame 42, and the fixed part of the rotating mechanism 40 is connected to the support frame 6. In this technical solution, the first connecting frame 42 does not collide with the connecting cable 31. The rotating mechanism 40 can be a servo motor assembly, a rotating disk, or other rotating structure fixed to the support frame 6. The rotating mechanism 40 can horizontally change the direction of the rotating wheels 41 before the counterweight ball 3 reaches the interval area of ​​a set of rotating wheels 41, so as to deliver the counterweight ball 3 obliquely. After the set of counterweight balls 3 is delivered, the rotating mechanism 40 drives the delivery mechanism 4 to rotate and reset, so that the delivery mechanism 4 can receive the next falling counterweight ball 3.

[0056] In another technical solution, a rotating support 421 is connected to the top of the first connecting frame 42. The rotating mechanism 40 includes a rotating bearing 402, which includes an inner bearing ring 4021 and an outer bearing ring 4022 nested within each other. A bearing mounting seat 400 is fixed to the top of the inner bearing ring 4021, and the bottom of the outer bearing ring 4022 is connected to the rotating support 421. A toothed groove is provided on the outer circumference of the outer bearing ring 4022. A rotating motor 401 is mounted on the bearing mounting seat 400. The rotor drive is connected with rotating teeth 4011, which mesh with the tooth grooves on the outer circumference of the bearing outer ring 4022. The rotating motor 401 is connected to the bearing mounting base 400 by a bracket. The bearing mounting base 400 is fixed to the transverse beam 61 of the frame by bolts or other means. The rotating motor 401 and the rotating teeth 4011 can be matched and transmitted by a coupling or a reducer. The rotating motor 401 causes the bearing outer ring 4022 to rotate through the rotating teeth 4011, changing the projection direction of the set of rotating wheels 41 below.

[0057] In another technical solution, a baffle shaft 442 is installed on the first connecting frame 42. One end of the baffle shaft 442 is connected to a baffle motor 441. A baffle 44 is connected downward to the baffle shaft 442. The baffle 44 is located between a set of guide rails 43. When the counterweight ball 3 slides down the guide rail 43, it is stopped by the downward obstruction of the baffle 44. After the baffle motor 441 controls the baffle 44 to rotate and move away, the counterweight ball 3 continues to slide down the guide rail 43. In this technical solution, as... Figure 7 , Figure 8As shown, a second connecting frame 422 is connected to the first connecting frame 42. The baffle motor 441 is installed on the second connecting frame 422. One end of the baffle shaft 442 is connected to the baffle motor 441 for transmission. The baffle motor 441 controls the rotation of the baffle shaft 442 so that the baffle 44 forms an obstruction or non-obstruction relationship on the downward path of the counterweight ball 3. In this way, by controlling the position of the baffle 44, the state of the counterweight ball 3 on the guide rail 43 is divided into a ready-to-deliver state and a delivery state, which facilitates precise control of the projection of the counterweight ball 3.

[0058] In another technical solution, the middle part of the covering blanket 2 is overlapped multiple times, with the overlap line parallel to the long side of the covering blanket 2. The width of the overlapping covering blanket 2 is smaller than that of the unoverlapping covering blanket 2. Figure 13 Two overlapping methods of the covering blanket 2 are shown. The covering blanket 2 unfolds as the counterweight ball 3 is thrown, and the effective laying width is more than twice the width when it is overlapped.

[0059] In another technical solution, the counterweight ball 3 includes a counterweight ball shell 301 and a threaded cover 303. The counterweight ball shell 301 has an opening that is threadedly connected to the threaded cover 303. The counterweight ball shell 301 is filled with a counterweight 302. The counterweight 302 can be mud or sand obtained on site or specially prepared iron sand. Optionally, the counterweight ball shell 301 can also be made of metal, plastic or rubber. It is necessary to ensure that the counterweight ball 3 can be easily pushed in the counterweight ball slot 620. After passing through a set of rotating wheels 41, the counterweight ball shell 301 can undergo plastic deformation without leaking the counterweight 302.

[0060] In another technical solution, the working method of the above-mentioned bottom mud covering material laying device includes the following steps:

[0061] S1. Fill the counterweight shell 301 with sand and gravel as counterweight 302, and connect the same length of connecting cable 31 to all counterweight balls 3. Specifically, the counterweight shell 301 and connecting cable 31 are uniformly processed and transported to the shore. Sand and gravel on site can be used to fill the inside of the counterweight shell 301. After ensuring that the inside is filled tightly, screw on the threaded cap 301 and complete the connection between the counterweight balls 3 and the connecting cable 31.

[0062] S2. The ends of the connecting cables 31 are tied symmetrically and at intervals to the two long sides of the covering blanket 2. Then, the counterweight balls 3 are inserted into the counterweight ball slots 620 on the corresponding sides in pairs from the ends. Specifically, after the rolled covering blanket 2 is transported to the site, the covering blanket 2 is stacked, holes are punched on the blanket body of the two long sides of the covering blanket 2 and the connecting cables 31 are tied. The counterweight balls 3 are inserted into the counterweight ball slots 620 in pairs, so that the covering blanket 2 is finally hung on the support frame 6 in a wave shape.

[0063] S3, the covering blanket 2 is hung by rows of counterweight balls 3 on both sides, and the delivery mechanism 4 is installed at the front end of the counterweight ball slot 620.

[0064] S4. Start the two sets of rotating wheels 41. The ship 1 travels in a straight line to the starting point of the laying and travels in a straight line at a constant speed. The conveying mechanism 5 pushes the first ball in each counterweight ball slot 620 into the delivery mechanism 4. The ship 1 travels in a straight line at a constant speed to the starting point of the predetermined laying line. At this time, the laying operation of the covering blanket 2 begins.

[0065] S5, the counterweight ball 3 falls and slides along the guide rail 43, and is stopped by the baffle 44.

[0066] S6. After the rotating mechanism 40 rotates the throwing mechanism 4 holding the counterweight ball 3 horizontally to the designed throwing angle, the baffle shaft 442 rotates and moves away the baffle 44. The counterweight ball 3 continues to slide along the guide rail 43 and is thrown out under the action of a set of rotating wheels 41. The set of counterweight balls 3 moves simultaneously and in opposite directions. Specifically, it is necessary to calculate and control the forward speed of the ship 1, the throwing speed of the counterweight ball 3, the throwing angle of the counterweight ball 3, and the throwing frequency of the counterweight ball 3 to avoid the situation where the ship 1 pulls the already thrown covering blanket 2.

[0067] S7. The rotating mechanism 40 rotates the unloaded delivery mechanism 4 back to the center, the baffle shaft 442 rotates to return the baffle 44 to its original position, and the conveying mechanism 5 pushes the next set of counterweight balls 3 into the delivery mechanism 4.

[0068] S8. Repeat steps S5-S7 to complete the laying of one entire covering blanket 2; specifically, as follows... Figure 2 As shown, after the vessel 1 has laid a whole cover blanket 2, it continues to lay the next cover blanket 2 in a straight line next to the laid strip, thus completing the laying work for the entire water area.

[0069] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A bottom sediment covering material laying device, installed on a ship (1), characterized in that, include: The covering blanket (2) has counterweight balls (3) flexibly connected at intervals and symmetrically on the two long sides of its body; The supporting frame (6) has counterweight balls (3) on each side of the covering blanket (2) arranged in a row on the supporting frame (6); Two delivery mechanisms (4) are installed at one end of a row of counterweight balls (3). Each delivery mechanism (4) includes a set of opposite and spaced rotating wheels (41). The set of rotating wheels (41) applies force to the counterweight balls (3) that enter their spaced area by rotating in opposite directions, so that the counterweight balls (3) have an initial velocity and pull the covering blanket (2) to move in a straight line. The conveying mechanism (5) is used to push the first counterweight ball (3) of each row into the delivery mechanism (4) one by one.

2. The device for laying bottom mud covering material as described in claim 1, characterized in that, The support frame (6) includes two sets of counterweight ball trays (620) spaced apart and parallel to the axis of the ship (1). The counterweight ball trays (620) are two opposing and spaced L-shaped beams. The counterweight balls (3) on the same side are arranged one by one in the counterweight ball trays (620). The counterweight balls (3) are supported by the two opposing bottom edges of the counterweight ball trays (620). The connection structure between the counterweight balls (3) and the covering blanket (2) passes through the gap between the two L-shaped beams of the counterweight ball trays (620). A row of counterweight balls (3) enters the delivery mechanism (4) one by one from the end of the counterweight ball trays (620).

3. The device for laying bottom mud covering material as described in claim 2, characterized in that, A set of rotating wheels (41) is lower than the end of the counterweight ball support groove (620). A set of spaced and parallel guide rails (43) are installed between the end of the counterweight ball support groove (620) and the corresponding set of rotating wheels (41). The counterweight ball (3) falls from the end of the counterweight ball support groove (620) into the spaced area of ​​the set of guide rails (43) and is guided to slide into the spaced area of ​​the set of rotating wheels (41) under the joint support of the set of guide rails (43).

4. The device for laying bottom mud covering material as described in claim 2, characterized in that, The conveying mechanism (5) is installed above the counterweight ball tray (620). The conveying mechanism (5) includes two fixed seats (50). A set of guide rods (502) is fixedly connected between the two fixed seats (50). A threaded screw (501) is connected between the two fixed seats (50). One end of the threaded screw (501) is connected to a screw motor (500). A slider (51) is fitted on both the threaded screw (501) and the guide rod (502). A push block (511) is connected below the slider (51). The push block (511) extends into the counterweight ball tray (620) and abuts against the counterweight ball (3) farthest from the delivery mechanism (4). When the push block (511) moves horizontally toward the delivery mechanism (4), the push block (511) pushes a row of counterweight balls (3) forward.

5. The device for laying bottom mud covering material as described in claim 3, characterized in that, The delivery mechanism (4) also includes two mounting bases (412), each mounting base (412) is connected to a rotating wheel (41) by a bearing, the upper part of the two mounting bases (412) is connected to a first connecting frame (42), the upper part of the first connecting frame (42) is connected to a rotating mechanism (40), wherein the rotating part of the rotating mechanism (40) is connected to the first connecting frame (42), and the fixed part of the rotating mechanism (40) is connected to the support frame (6).

6. The device for laying bottom mud covering material as described in claim 5, characterized in that, The top of the first connecting frame (42) is connected to a rotating support (421). The rotating mechanism (40) includes a rotating bearing (402). The rotating bearing (402) includes a bearing inner ring (4021) and a bearing outer ring (4022) nested within each other. The top of the bearing inner ring (4021) is fixed with a bearing fixing seat (400). The bottom of the bearing outer ring (4022) is connected to the rotating support (421). The outer circumference of the bearing outer ring (4022) is provided with a toothed groove. A rotating motor (401) is installed on the bearing fixing seat (400). The rotor of the rotating motor (401) is connected to a rotating tooth (4011). The rotating tooth (4011) meshes with the toothed groove on the outer circumference of the bearing outer ring (4022).

7. The device for laying bottom mud covering material as described in claim 5, characterized in that, A baffle shaft (442) is installed on the first connecting frame (42). One end of the baffle shaft (442) is connected to a baffle motor (441). The baffle shaft (442) is connected downward to a baffle (44). The baffle (44) is located between a set of guide rails (43). When the counterweight ball (3) slides down on the guide rail (43), the counterweight ball (3) is stopped by the downward baffle (44). After the baffle motor (441) controls the baffle (44) to rotate and move away, the counterweight ball (3) continues to slide down along the guide rail (43).

8. The device for laying bottom mud covering material as described in claim 5, characterized in that, The middle part of the covering blanket (2) is overlapped multiple times, and the overlap line is parallel to the long side of the covering blanket (2). The width of the overlapping covering blanket (2) is smaller than that of the covering blanket (2) before overlapping.

9. The device for laying bottom mud covering material as described in claim 4, characterized in that, The counterweight ball (3) includes a counterweight ball shell (301) and a threaded cap (303). The counterweight ball shell (301) has an opening that is threadedly connected to the threaded cap (303). The counterweight ball shell (301) is filled with a counterweight (302).

10. A method for laying bottom mud covering material, applied to the bottom mud covering material laying device as described in claim 9, characterized in that, Includes the following steps: S1. Fill the counterweight shell (301) with sand and gravel as counterweights (302), and connect the same length connecting cables (31) to all counterweight balls (3); S2. Tie the ends of the connecting cable (31) to the two long sides of the covering blanket (2) at intervals and symmetrically. Then insert the counterweight balls (3) into the corresponding counterweight ball slots (620) from the ends one by one. S3. The covering blanket (2) is hung by counterweight balls (3) arranged in rows on both sides, and a delivery mechanism (4) is installed at the front end of the counterweight ball tray (620). S4. Start the two sets of rotating wheels (41), the ship (1) travels in a straight line to the laying start point and travels in a straight line at a constant speed, and the conveying mechanism (5) pushes the first ball out of the counterweight ball tray (620) of each counterweight ball tray (620); S5. The counterweight ball (3) falls and slides along the guide rail (43), and is stopped by the baffle (44); S6. After the rotating mechanism (40) rotates the throwing mechanism (4) holding the counterweight ball (3) horizontally to the designed throwing angle, the baffle shaft (442) rotates to move the baffle (44), the counterweight ball (3) continues to slide along the guide rail (43), and is thrown out under the action of a set of rotating wheels (41). The set of counterweight balls (3) move simultaneously and in opposite directions. S7. The rotating mechanism (40) rotates the unloaded delivery mechanism (4) back to the center, the baffle shaft (442) rotates to return the baffle (44) to its original position, and the conveying mechanism (5) pushes the next set of counterweight balls (3) out of the counterweight ball tray (620). S8. Repeat steps S5 to S7 to complete the laying of a whole covering blanket (2).

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