A positioning device and positioning method for sinking a head beam in a riverbed

Abstract

The present application relates to a positioning device and a positioning method for the sinking of the head beam in the riverbed, belonging to the technical field of arrangement sinking. The positioning device includes a reel; a base is arranged at the bottom of the reel, and a second groove is formed on the base; a support plate is slidably arranged vertically in the second groove; the reel is fixed at the top of the support plate; a plurality of first springs are fixed at the bottom of the support plate, and the bottom ends of the first springs are fixedly connected to the bottom surface of the second groove; a motor base is slidably arranged along the length direction of the top surface of the support plate; a motor is fixed on the top surface of the motor base; a slot is formed on the reel. The positioning method includes: after the arrangement is unfolded, the tail of the arrangement and the drum are connected through the tail rope, and the arrangement is wound into the drum until the head of the arrangement is flat on the front edge of the drum; the head beam is hoisted to the front edge of the arrangement, and the head beam and the head of the arrangement are tied and connected with a polypropylene rope; the ship position is calibrated, and the reel is started to slowly sink the head beam to the bottom of the riverbed. The present application has the effect of stopping wire release when the head beam touches the bottom.

Description

Technical Field

[0001] This application relates to the technical field of arranging and sinking, and in particular to a positioning device and a positioning method for sinking a head beam on the riverbed. Background Art

[0002] Since a relatively thick sediment layer usually accumulates on the riverbed, the riverbed topography will change under the long-term impact of water flow, affecting the operation of the waterway.

[0003] For the related technology, reference can be made to the Chinese invention patent application with the publication number CN113047221A, which discloses a reverse water mattress laying device and its use method, including a mattress body, concrete ballast blocks and a mattress laying ship. The concrete ballast blocks are arranged above the mattress body; one end of the mattress body is connected to the mattress laying ship; the mattress body is composed of a plurality of basic units spliced together; longitudinal reinforcing bars and transverse reinforcing bars are arranged on the basic units; lashing rings are arranged on the longitudinal reinforcing bars; pull rings are arranged on the outer side of the transverse reinforcing bars; a fixing device is arranged at the head; in the transverse direction of the mattress body, the first row is fully paved with concrete ballast blocks; in the longitudinal direction of the mattress body, the first row and the last row are fully paved with double-layer interlocking blocks; in the middle part of the mattress body, the concrete ballast blocks are fully paved at intervals in a plum blossom shape; a double-strand mooring beam is arranged at the tail of the mattress body, and the last row is fully paved with concrete ballast blocks.

[0004] Regarding the above-mentioned related technology, the inventor believes that there are the following defects: after the head beam sinks with the arrangement, it is necessary to stop the arrangement and sinking after the head beam touches the bottom, and then start the mattress laying ship to continue the release of the arrangement; and when the head beam still continues to sink after touching the bottom, it will cause large-area wrinkles when laying the mattress, affecting the contact area between the arrangement and the riverbed surface; since it is not visible whether the head beam touches the bottom, the staff needs to estimate according to the river depth, which affects the operation efficiency. Summary of the Invention

[0005] In order to improve the problem of being unable to accurately judge whether the head beam touches the bottom, this application provides a positioning device and a positioning method for sinking a head beam on the riverbed.

[0006] A positioning device for sinking a head beam on the riverbed provided by this application adopts the following technical solutions:

[0007] A positioning device for sinking the head beam in the riverbed, used for a drum arranged in a winding manner and a reel for controlling the rotation of the drum; a base is provided at the bottom of the reel, a first groove is formed on the base, and a second groove is formed on the bottom surface of the first groove; a support plate is slidably arranged vertically in the second groove; a reel seat is fixed at the top of the support plate, and a reel is fixed at the top of the reel seat; a plurality of first springs are fixed at the bottom of the support plate, and the bottom ends of the first springs are fixedly connected to the bottom surface of the second groove; a motor seat is slidably arranged along the length direction of the support plate on the top surface of the support plate; a motor is fixed on the top surface of the motor seat; a slot is formed on the reel and can be inserted into the end of the output shaft of the motor; the end of the motor seat can abut against the side wall of the second groove.

[0008] By adopting the above technical solution, when the motor seat is located in the second groove, since the motor seat is in contact with the inner wall of the second groove and cannot move, the motor is in an inserted state with the reel, and the motor drives the reel to rotate; when the support plate rises and causes the motor seat to move to the first groove, the motor seat without limit moves by itself, resulting in the separation of the motor from the reel, and the reel stops rotating. And when the pressure received by the reel decreases, the support plate will drive the reel to move upward.

[0009] Optionally, a first guide piece is fixed at the bottom of the motor seat, a first guide groove is formed on the top surface of the support plate, and the first guide piece is slidably arranged in the first guide groove along the length direction of the support plate; a second spring is fixed on one side of the first guide piece close to the reel seat, and the end of the second spring far from the first guide piece is fixedly connected to the side wall of the first guide groove close to the reel seat.

[0010] By adopting the above technical solution, the second spring provides an elastic force for the motor seat to move away from the reel seat, which is convenient for the motor seat to separate the motor from the reel after losing the limiting effect.

[0011] Optionally, an inclined surface is formed on one side of the motor seat far from the reel seat and can abut against the top of the side wall of the second groove.

[0012] By adopting the above technical solution, when the support plate drives the motor seat to move downward, the inclined surface of the motor seat abuts against the top corner position of the second groove, so that the motor seat moves toward the side close to the reel seat, which is convenient for the output shaft of the motor to be inserted into the reel again.

[0013] Optionally, a first sliding groove is formed on the inner wall of the second groove close to the motor seat, and a second sliding groove is formed on the bottom wall of the first groove; a first sliding piece is slidably arranged in the first sliding groove along the length direction of the support plate; a second sliding piece is slidably arranged vertically in the second sliding groove; chamfers one that can abut against each other are respectively formed on the opposite inner sides of the first sliding piece and the second sliding piece; a chamfer two that can abut against the bottom corner of the support plate is formed at the end of the first sliding piece far from the second sliding piece.

[0014] By adopting the above technical solution, when the second sliding piece extends out of the second sliding groove, it can provide a limiting effect on the motor base; when the rising height of the supporting plate is insufficient, the supporting plate and the first sliding piece will be in an abutting state, so that the second sliding piece extends out of the second sliding groove and provides a limiting effect on the motor base; when it is necessary to prevent the motor from separating from the drum due to the reduction of the instantaneous force received by the supporting plate resulting in the upward movement of the supporting plate itself.

[0015] Optionally, a third guiding piece is fixed to the side of the second sliding piece away from the supporting plate, a third guiding groove is formed in the side of the second sliding groove away from the supporting plate, and the third guiding piece is slidably arranged vertically in the third guiding groove; a fourth spring is fixed to the bottom of the third guiding piece, and the bottom end of the fourth spring is fixedly connected to the bottom wall of the third guiding groove.

[0016] By adopting the above technical solution, the fourth spring provides a downward reset elastic force for the second sliding piece, which is convenient for the second sliding piece to contract into the second sliding groove after the first sliding piece and the second sliding piece are separated.

[0017] Optionally, a gear is rotatably installed on the top of the supporting plate; a first rack that can be meshed with the gear is fixed to the side of the motor base close to the gear; a second rack that can be meshed with the gear is slidably arranged along the length direction of the top surface of the supporting plate; a limiting rod is slidably arranged along the width direction of the top surface of the supporting plate, and a through hole for the limiting rod to pass through is formed in the first rack; a limiting tooth that can be inserted into the side of the limiting rod close to the gear is fixed to the inner wall of the through hole close to the gear; a ratchet is fixed to the side wall of the drum, and a ratchet tooth that can be engaged with the ratchet is fixed to the end of the limiting rod.

[0018] By adopting the above technical solution, after the motor base moves, it can drive the second rack to move through the gear, and the rack provides a limiting effect on the limiting rod by inserting the limiting tooth into the limiting rod; after the motor base moves, the limiting rod that loses the limiting effect moves and is engaged with the ratchet through the ratchet tooth, so as to achieve the purpose of limiting the drum.

[0019] Optionally, a second guiding piece is fixed to the bottom surface of the limiting rod, a second guiding groove is formed in the top surface of the supporting plate, and the second guiding piece is slidably arranged along the width direction of the supporting plate in the second guiding groove; a third spring is fixed to the side of the second guiding piece away from the drum seat, and one end of the third spring away from the second guiding piece is fixedly connected to the inner wall of the second guiding groove away from the drum seat.

[0020] By adopting the above technical solution, the third spring provides an elastic force for the limiting rod toward the side close to the drum seat, which is convenient for driving the limiting rod to move through the third spring after the limitation of the limiting rod is released.

[0021] Optionally, an installation groove coaxial with the gear is formed in the top surface of the support plate; a contact rod is slidably arranged vertically in the installation groove, and a screw rod is fixed to the top end of the contact rod; the screw rod penetrates through the gear, and the gear is in threaded connection with the screw rod; the cross sections of the installation groove and the contact rod are both square; a second switch moving piece is fixed to the bottom end of the contact rod, and a second switch fixed piece is fixed to the bottom surface of the installation groove; the second switch moving piece is electrically connected to the motor, and the second switch fixed piece is electrically connected to the power supply.

[0022] By adopting the above technical solution, the rotation of the gear will drive the contact rod to move vertically, and the contact rod controls the start and stop of the motor by making the second switch moving piece contact and separate from the second switch fixed piece.

[0023] Optionally, an electromagnet is fixed to the top surface of the support plate, and a magnetic sheet that can be adsorbed by the electromagnet is fixed to the limiting rod; a first switch fixed piece is fixed to the inner wall of the second groove, and a first switch moving piece that can be in electrical contact with the first switch fixed piece is fixed to the side wall of the reel seat; the first switch fixed piece is electrically connected to the power supply, and the first switch moving piece is electrically connected to the electromagnet.

[0024] By adopting the above technical solution, after the support plate is lowered, the first switch moving piece and the first switch fixed piece are in a closed state, so that the electromagnet generates an adsorption effect on the limiting rod, and the limitation of the reel can be released after the limiting rod leaves the ratchet wheel.

[0025] A positioning method for the sinking of the leading beam in the riverbed provided by this application adopts the following technical solution:

[0026] A positioning method for the sinking of the leading beam in the riverbed includes the following steps:

[0027] After the arrangement is deployed, connect the tail of the arrangement and the drum through the tail rope, and wind the arrangement into the drum until the head of the arrangement is flat at the front edge of the drum.

[0028] Measure the water depth and drift distance of the construction area, and calculate the length of the leading rope.

[0029] Lift the leading beam to the front edge of the arrangement, and tie and connect the leading beam and the head of the arrangement with a polypropylene rope.

[0030] Calibrate the ship position, start the reel, and slowly lower the leading beam to the bottom of the riverbed.

[0031] To sum up, this application includes at least one of the following beneficial technical effects:

[0032] 1. When the motor base is located in the second groove, since the motor base is in contact with the inner wall of the second groove, the motor base cannot move, the motor and the drum are in an inserted state, and the motor drives the drum to rotate; when the support plate rises and causes the motor base to move to the first groove, the motor base without a limit moves due to its own movement, resulting in the separation of the motor and the drum, and the drum stops rotating; when the pressure received by the drum decreases, the support plate will drive the drum to move upward.

[0033] 2. When the second sliding piece extends out of the second sliding groove, it can provide a limiting function for the motor base; when the rising height of the support plate is insufficient, the support plate and the first sliding piece will be in contact with each other, so that the second sliding piece extends out of the second sliding groove and provides a limiting function for the motor base; to prevent the support plate from rising due to the instantaneous force acting on it decreasing, it can prevent the motor and the drum from separating.

[0034] 3. After the motor base moves, it can drive the second rack to move through the gear, and the rack is inserted into the limiting rod through the limiting teeth to provide a limiting function for the limiting rod; after the motor base moves, the limiting rod that loses the limiting function moves and engages with the ratchet through the ratchet teeth to achieve the purpose of limiting the drum. Description of the Drawings

[0035] Figure 1 It is a schematic structural diagram of the positioning device according to the embodiment of the present application.

[0036] Figure 2 It is a cross-sectional view of the base according to the embodiment of the present application.

[0037] Figure 3 It is a schematic structural diagram of the support plate according to the embodiment of the present application.

[0038] Figure 4 It is a cross-sectional view of the support plate according to the embodiment of the present application.

[0039] Figure 5 It is a cross-sectional view of the support plate according to the embodiment of the present application.

[0040] Reference numerals: 1, drum; 11, suspension rope; 12, ratchet wheel; 13, ratchet teeth; 2, reel; 21, electromagnet; 22, cylinder body; 3, base; 31, first groove; 32, second groove; 33, second movable switch piece; 34, second fixed switch piece; 4, support plate; 41, first spring; 42, reel seat; 43, cylinder seat; 44, gear; 45, first rack; 46, second rack; 47, installation groove; 48, contact rod; 49, screw; 5, motor base; 51, inclined plane; 52, motor; 53, first guide piece; 54, first guide groove; 55, second spring; 56, slot; 57, through hole; 6, safety component; 61, first sliding piece; 62, second sliding piece; 63, first chamfer; 64, second chamfer; 65, first sliding groove; 66, second sliding groove; 67, third guide piece; 68, third guide groove; 69, fourth spring; 7, limiting plate; 71, limiting rod; 72, connecting rod; 73, second guide piece; 74, second guide groove; 75, third spring; 76, perforation; 77, limiting teeth. Detailed implementation mode

[0041] The following further elaborates on this application in conjunction with the attached Figures 1-5 drawings.

[0042] The embodiment of this application discloses a positioning device and a positioning method for the sinking of the leading beam in the riverbed. Referring to Figure 1 , the positioning device for the sinking of the leading beam in the riverbed includes a drum 1 for winding and arranging and a reel 2 for controlling the rotation of the drum 1. In this embodiment, after the arrangement is transported by a laying barge to a predetermined dropping position, the arrangement is wound around the drum 1, and the arrangement is vertically sunk into the river by rotating the drum 1. A suspension rope 11 is wound around the outer peripheral surface of the reel 2, and the end of the suspension rope 11 away from the reel 2 is wound around the circumference of the drum 1. After the reel 2 rotates, the suspension rope 11 extends and causes the drum 1 to rotate. The horizontal height of the drum 1 is lower than the horizontal height of the reel 2. The drum 1 can be suspended outside the laying barge; the reel 2 is arranged inside the laying barge, and a base 3 is provided at the bottom of the reel 2.

[0043] Referring to Figure 1 and Figure 2 , a first groove 31 is formed in the base 3, and a second groove 32 is formed in the bottom surface of the first groove 31; the length of the second groove 32 is less than the length of the first groove 31. A support plate 4 is slidably arranged vertically in the second groove 32. A plurality of first springs 41 are fixed to the bottom of the support plate 4, and the bottom ends of the first springs 41 are fixedly connected to the bottom surface of the second groove 32. A reel seat 42 is fixed to the top of the support plate 4, and the reel 2 is fixed to the reel seat 42. The reel 2 includes a cylinder body 22 and two vertically arranged cylinder seats 43 fixed to the top of the reel seat 42. The cylinder body 22 is rotatably installed between the two cylinder seats 43.

[0044] Referring to Figure 2 and Figure 3, a motor base 5 is slidably arranged on the top surface of the support plate 4 along its length direction. An inclined surface 51 that can abut against the top of the side wall of the second groove 32 is provided on one side of the motor base 5 away from the drum base 42. A motor 52 is fixed on the top surface of the motor base 5. A first guide piece 53 is fixed at the bottom of the motor base 5, and a first guide groove 54 is formed on the top surface of the support plate 4. The first guide piece 53 is slidably arranged in the first guide groove 54 along the length direction of the support plate 4. A second spring 55 is fixed on one side of the first guide piece 53 close to the drum base 42, and the end of the second spring 55 away from the first guide piece 53 is fixedly connected to the side wall of the first guide groove 54 close to the drum base 42. A slot 56 that can be inserted into the end of the output shaft of the motor 52 is formed on the side wall of the cylinder body 22, and a through hole 57 for the output shaft of the motor 52 to pass through is formed on the drum base 43; in this embodiment, the cross sections of the output shaft of the motor 52 and the slot 56 are both square.

[0045] Since the end arranged towards the river bottom will tie the head beam, the arrangement will exert a downward force on the drum 2, causing the support plate 4 to move downward. When the head beam touches the bottom of the river channel, the pressure exerted by the arrangement and the head beam on the drum 2 decreases, and the drum 2 resets upward under the action of the first spring 41.

[0046] Since the second spring 55 exerts an elastic force on the first guide piece 53 towards the side away from the drum base 42, the motor base 5 is in an abutting state with the inner wall of the second groove 32; after the support plate 4 rises, the motor base 5 leaves the second groove 32 and enters the first groove 31. The motor base 5 moves towards the side away from the drum base 42 under the action of the second spring 55, so that the motor 52 is separated from the drum 2.

[0047] Refer to Figure 2 and Figure 3 , a safety component 6 for preventing the motor base 5 from moving horizontally is arranged inside the side wall of the second groove 32. The safety component 6 includes a first sliding piece 61 slidably connected to the support plate 4 along the length direction of the support plate 4 and a second sliding piece 62 slidably connected to the support plate 4 vertically; chamfers 63 that can abut against each other are respectively formed on the top surface of one end of the first sliding piece 61 away from the support plate 4 and on one side of the bottom end of the second sliding piece 62 close to the support plate 4; a chamfer 64 that can abut against the bottom corner of the support plate 4 is formed at the end of the first sliding piece 61 away from the second sliding piece 62. A first sliding groove 65 is formed on the inner wall of the second groove 32 close to the motor base 5, and a second sliding groove 66 is formed on the bottom wall of the first groove 31; the first sliding piece 61 is slidably arranged in the first sliding groove 65, and the second sliding piece 62 is slidably arranged in the second sliding groove 66. A third guide piece 67 is fixed on one side of the second sliding piece 62 away from the support plate 4, a third guide groove 68 is formed on one side of the second sliding groove 66 away from the support plate 4, and the third guide piece 67 is slidably arranged in the third guide groove 68 vertically. A fourth spring 69 is fixed at the bottom of the third guide piece 67, and the bottom end of the fourth spring 69 is fixedly connected to the bottom wall of the third guide groove 68.

[0048] When the leading beam and the arrangement come into contact with the water surface, the buoyancy provided by the water body will reduce the pulling force exerted by the lifting rope 11 on the support plate 4. In a short period of time, the support plate 4 will move upward, and at the same time, the motor base 5 will move into the first chute 65. After the motor base 5 moves upward, it will move under the action of the second spring 55. At this time, the end of the output shaft of the motor 52 will move outward from the slot 56, and the phenomenon of the output shaft of the motor 52 slipping will occur. As long as the second sliding piece 62 extends out of the second chute 66, the top of the second sliding piece 62 is close to the side wall of the support plate 4 and can abut against the end of the motor base 5 away from the reel base 42 to prevent the motor base 5 from moving. Only when the floating height of the support plate 4 is higher than that of the first sliding piece 61, the second sliding piece 62 loses the abutting effect of the first sliding piece 61, and the second sliding piece 62 will move downward under the action of the fourth spring 69, thereby releasing the limit on the motor base 5.

[0049] Refer to Figure 3 , a gear 44 is rotatably installed on the top of the support plate 4; a first rack 45 that can mesh with the gear 44 is fixed on one side of the motor base 5 close to the gear 44; a second rack 46 that can mesh with the gear 44 is slidably arranged on the top surface of the support plate 4 along its own length direction; the first rack 45 and the second rack 46 are arranged on both sides of the gear 44 and are parallel to each other, and the moving directions of the first rack 45 and the second rack 46 are opposite.

[0050] Refer to Figure 3 and Figure 4 , an installation groove 47 coaxial with the gear 44 is formed at the position of the gear 44 on the top surface of the support plate 4. A contact rod 48 is slidably arranged vertically in the installation groove 47, and a screw rod 49 is fixed at the top of the contact rod 48; the screw rod 49 penetrates through the gear 44, and an internal thread that can be threadedly connected with the screw rod 49 is formed on the inner peripheral surface of the gear 44. The cross-sections of the installation groove 47 and the contact rod 48 are both square. A second switch moving piece 33 is fixed at the bottom end of the contact rod 48, and a second switch fixed piece 34 is fixed at the bottom surface of the installation groove 47; the second switch moving piece 33 is electrically connected to the motor 52, and the second switch fixed piece 34 is electrically connected to the power supply.

[0051] After the gear 44 rotates, the screw rod 49 rises, separating the switch moving piece from the switch fixed piece, thereby turning off the motor 52.

[0052] Refer to Figure 4 and Figure 5, a limiting plate 7 is slidably arranged on the top surface of the supporting plate 4 along its width direction. The limiting plate 7 includes two parallel limiting rods 71 and a connecting rod 72 fixed between the two limiting rods 71 for connecting the two limiting rods 71. A second guiding piece 73 is fixed to the bottom surface of the limiting rod 71, and a second guiding groove 74 is formed on the top surface of the supporting plate 4. The second guiding piece 73 is slidably arranged in the second guiding groove 74 along the width direction of the supporting plate 4. A third spring 75 is fixed to the side of the second guiding piece 73 away from the reel seat 42, and one end of the third spring 75 away from the second guiding piece 73 is fixedly connected to the inner wall of the second guiding groove 74 on the side away from the reel seat 42. Two through holes 76 for the limiting rods 71 to pass through are formed on the rack 45. A limiting tooth 77 that can be inserted into the side of the limiting rod 71 close to the gear 44 is fixed to the inner wall of the through hole 76 close to the gear 44.

[0053] Referring to Figure 4 , ratchets 12 are respectively fixed to both sides of the reel 2, and ratchet teeth 13 that can engage with the ratchets 12 are fixed to the ends of the limiting rods 71.

[0054] By inserting the limiting tooth 77 into the side wall of the limiting rod 71, a limiting effect can be provided for the limiting rod 71. When the second rack 46 moves, the limiting tooth 77 is separated from the limiting rod 71, and the limiting rod 71 moves towards the side close to the ratchet 12 under the action of the third spring 75, so that the ratchet teeth 13 are engaged with the ratchets 12 to prevent the reel 2 from rotating.

[0055] Referring to Figure 1 , an electromagnet 21 is fixed to the top surface of the supporting plate 4 on the side of the connecting rod 72 away from the reel seat 42, and a magnetic sheet that can be adsorbed by the electromagnet 21 is fixed to the side wall of the connecting rod 72 away from the reel seat 42. A first fixed switch piece is fixed to the inner wall of the second groove 32, and a first movable switch piece that can be in electrical contact with the first fixed switch piece is fixed to the side wall of the reel seat 42. The first fixed switch piece is electrically connected to the power supply, and the first movable switch piece is electrically connected to the electromagnet 21.

[0056] After the reel seat 42 is pressed and sinks, the first movable switch piece is in electrical contact with the first fixed switch piece, so that the electromagnet 21 is energized and generates an adsorption effect on the magnetic sheet. After the connecting rod 72 drives the limiting rod 71 to move, the ratchet teeth 13 are separated from the ratchets 12.

[0057] The implementation principle of the positioning device for the head beam riverbed sinking in the embodiment of the present application is as follows:

[0058] After starting the motor 52, the motor 52 drives the reel 2 to rotate. As the lifting rope 11 is relaxed, the roller 1 rotates and gradually releases the arrangement wound around the circumferential side of the roller 1 into the river channel. When the leading beam contacts the bottom of the river channel, the pressure exerted on the reel 2 by the arrangement and the leading beam decreases, and the reel 2 resets upward under the action of the first spring 41. After the support plate 4 rises, the motor base 5 leaves the second groove 32 and enters the first groove 31. The motor base 5 moves away from the reel base 42 under the action of the second spring 55. When the floating height of the support plate 4 is higher than that of the first sliding piece 61, the second sliding piece 62 loses the abutting action of the first sliding piece 61, and the second sliding piece 62 will move downward under the action of the fourth spring 69. After the motor base 5 loses the blocking effect, the motor 52 is separated from the reel 2, and the reel 2 stops rotating.

[0059] During the movement of the motor base 5, the motor base 5 drives the second rack 46 to move through the gear 44. The limit tooth 77 is separated from the limit rod 71, and the limit rod 71 moves toward the ratchet 12 under the action of the third spring 75, so that the ratchet tooth 13 is engaged with the ratchet 12 to prevent the reel 2 from continuing to rotate, and the arrangement is in a stable state.

[0060] After the hull moves, as the distance between the hull and the leading beam increases, the pressure on the reel base 42 increases, so that the support plate 4 moves downward again. The first moving piece of the switch is in electrical contact with the first fixed piece of the switch, so that the electromagnet 21 is energized and generates an adsorption effect on the magnetic attraction piece. After the connecting rod 72 drives the limit rod 71 to move, the ratchet tooth 13 is separated from the ratchet 12. At the same time, the motor 52 and the reel 2 are in an inserted state again. After the motor 52 drives the reel 2 to rotate, the reel 2 will continue to release the arrangement into the river channel.

[0061] A positioning method for sinking the leading beam on the riverbed includes the following steps:

[0062] S1. Use a crane to lift the arrangement onto the deck. The operator unfolds the arrangement with the assistance of the crane, connects the tail of the arrangement to the roller 1 through the tail rope, starts the switch to automatically wind the arrangement onto the roller 1 until the head of the arrangement is flat at the front edge of the roller 1, and then closes the roller 1.

[0063] During the arrangement unfolding period, the operator stands on both sides of the arrangement and tightens the arrangement manually to make the arrangement on the roller 1 and the deck wrinkle-free.

[0064] S2. Use a single-beam instrument to measure the water depth and drift distance of the construction area, and calculate the length of the leading rope.

[0065] S3. Use a crane to lift the leading beam to the front edge of the arrangement and place it longitudinally in a row. Tie the leading beam and the head of the arrangement with a polypropylene rope.

[0066] S4. Calibrate the ship position, start the switch of the reel 2, and the leading beam slowly sinks to the bottom of the riverbed.

[0067] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A positioning device for sinking the head beam in the riverbed, which is used for a drum (1) wound and arranged and a reel (2) for controlling the rotation of the drum (1); a base (3) is arranged at the bottom of the reel (2), and it is characterized in that: A groove one (31) is formed in the base (3), and a groove two (32) is formed in the bottom surface of the groove one (31); a support plate (4) is slidably arranged vertically in the groove two (32); a reel seat (42) is fixed to the top of the support plate (4), and a reel (2) is fixed to the top of the reel seat (42); a plurality of first springs (41) are fixed to the bottom of the support plate (4), and the bottom ends of the first springs (41) are fixedly connected to the bottom surface of the groove two (32); a motor seat (5) is slidably arranged along the length direction of the top surface of the support plate (4); a motor (52) is fixed to the top surface of the motor seat (5); a slot (56) is formed in the reel (2) and can be inserted into the end of the output shaft of the motor (52); the end of the motor seat (5) can be abutted against the side wall of the groove two (32). A first guide piece (53) is fixed to the bottom of the motor seat (5), a first guide groove (54) is formed in the top surface of the support plate (4), and the first guide piece (53) is slidably arranged in the first guide groove (54) along the length direction of the support plate (4); a second spring (55) is fixed to one side of the first guide piece (53) close to the reel seat (42), and the end of the second spring (55) far from the first guide piece (53) is fixedly connected to the side wall of the first guide groove (54) close to the reel seat (42). A first sliding groove (65) is formed in the inner wall of the groove two (32) close to the motor seat (5), and a second sliding groove (66) is formed in the bottom wall of the groove one (31); a first sliding piece (61) is slidably arranged in the first sliding groove (65) along the length direction of the support plate (4); a second sliding piece (62) is slidably arranged vertically in the second sliding groove (66); chamfer one (63) which can be abutted against each other is formed in the relative inner sides of the first sliding piece (61) and the second sliding piece (62); chamfer two (64) which can be abutted against the bottom corner of the support plate (4) is formed in the end of the first sliding piece (61) far from the second sliding piece (62). A gear (44) is rotatably installed at the top of the support plate (4); a first rack (45) which can be meshed with the gear (44) is fixed to one side of the motor seat (5) close to the gear (44); a second rack (46) which can be meshed with the gear (44) is slidably arranged along the length direction of the top surface of the support plate (4); a limiting rod (71) is slidably arranged along the width direction of the top surface of the support plate (4), and a through hole (76) for the limiting rod (71) to pass through is formed in the first rack (45); a limiting tooth (77) which can be inserted into one side of the limiting rod (71) close to the gear (44) is fixed to the inner wall of the through hole (76) close to the gear (44); a ratchet wheel (12) is fixed to the side wall of the reel (2), and a ratchet tooth (13) which can be engaged with the ratchet wheel (12) is fixed to the end of the limiting rod (71).

2. The positioning device for sinking the head beam in the riverbed according to claim 1, wherein: An inclined surface (51) which can be abutted against the top of the side wall of the groove two (32) is formed in one side of the motor seat (5) far from the reel seat (42).

3. A positioning device for sinking a row head beam in a riverbed according to claim 1, characterized in that: On one side of the sliding vane two (62) away from the supporting plate (4), a guiding vane three (67) is fixed. On one side of the sliding groove two (66) away from the supporting plate (4), a guiding groove three (68) is formed. The guiding vane three (67) is arranged to slide vertically in the guiding groove three (68). A spring four (69) is fixed to the bottom of the guiding vane three (67), and the bottom end of the spring four (69) is fixedly connected to the bottom wall of the guiding groove three (68).

4. A positioning device for sinking the head beam in the riverbed according to claim 1, characterized in that: A guiding vane two (73) is fixed to the bottom surface of the limiting rod (71). A guiding groove two (74) is formed on the top surface of the supporting plate (4). The guiding vane two (73) is arranged to slide along the width direction of the supporting plate (4) in the guiding groove two (74). A spring three (75) is fixed to one side of the guiding vane two (73) away from the reel seat (42), and one end of the spring three (75) away from the guiding vane two (73) is fixedly connected to the inner wall of the guiding groove two (74) on the side away from the reel seat (42).

5. The positioning device for sinking a rowhead beam in a riverbed according to claim 1 is characterized in that: An installation groove (47) coaxial with the gear (44) is formed on the top surface of the supporting plate (4). A contact rod (48) is arranged to slide vertically in the installation groove (47). A screw rod (49) is fixed to the top end of the contact rod (48). The screw rod (49) penetrates through the gear (44), and the gear (44) is in threaded connection with the screw rod (49). The cross-sections of the installation groove (47) and the contact rod (48) are both square. A switch moving piece two (33) is fixed to the bottom end of the contact rod (48), and a switch fixed piece two (34) is fixed to the bottom surface of the installation groove (47). The switch moving piece two (33) is electrically connected to the motor (52), and the switch fixed piece two (34) is electrically connected to the power supply.

6. The positioning device for the sinking of the head beam in the riverbed according to claim 1, characterized in that: An electromagnet (21) is fixed to the top surface of the supporting plate (4). A magnetic attraction piece capable of adsorbing to the electromagnet (21) is fixed on the limiting rod (71). A switch fixed piece one is fixed to the inner wall of the groove two (32), and a switch moving piece one capable of making electrical contact with the switch fixed piece one is fixed to the side wall of the reel seat (42). The switch fixed piece one is electrically connected to the power supply, and the switch moving piece one is electrically connected to the electromagnet (21).

7. A positioning method for the positioning device of the head beam riverbed sinking as described in claim 1, characterized in that, Including the following steps: After the layout is unfolded, connect the tail of the layout and the drum (1) through the tail rope, and roll the layout into the drum (1) until the head of the layout lies flat on the front edge of the drum (1). Measure the water depth and drift distance of the construction area, and calculate the length of the head rope. Lift the head beam to the front edge of the layout, and tie and connect the head beam and the head of the layout with a polypropylene rope. Calibrate the ship position, start the reel (2), and slowly lower the head beam to the bottom of the riverbed.

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