Underwater backfill drag suction dredger with replaceable drag head

Abstract

The utility model discloses an underwater backfill drag suction dredger with replaceable drag heads, which is characterized in that the lower end of a steel wire rope support arm is connected with a support, a sliding block matched with a sliding chute is arranged below the support, the sliding chute is fixed on a dredger body and extends along the longitudinal direction of the dredger body, and the two supports are respectively connected with two ends of a two-way screw through threads. The two-way screw is supported by the ship body, extends in the longitudinal direction of the ship body and is driven by a motor II. The two supports are driven by the two-way screw to move in the opposite directions at the same time, the purpose that the distance between the two supports is adjustable is achieved, drag heads of different sizes can be replaced by the drag suction dredger, and compared with a traditional structure with the supports at the two ends fixed, the distance between the two supports can be rapidly adjusted, and the drag suction dredger is convenient to use. And the rake heads with different sizes can be conveniently replaced, so that the rake heads can better meet the specific requirements of different soil stratums in a dredging area, and the adaptability and efficiency of operation are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of auxiliary dredging engineering, especially relates to an underwater backfilling rake suction ship with replaceable rake heads. BACKGROUND

[0002] The underwater backfilling rake suction ship for waterway is a dredger specially used for port and waterway dredging engineering, has the characteristics of high construction efficiency, strong mobility and large amount of dredging work in deep waterway, the rake suction dredger is a kind of ship playing a major role in waterway dredging engineering, and the construction technology and quality control requirements are extremely high, and this type of ship is particularly important in maintenance waterway projects, because dredging engineering usually involves thin mud layer, rapid siltation problems, and the normal operation of the waterway needs to be ensured during construction.

[0003] The existing underwater backfilling rake suction ship needs to clean the construction area underwater before the formal dredging operation starts, remove possible sundries and obstacles, then determine the construction path of the rake suction ship by placing buoys on the water surface and using anchor ships to connect steel cables. The rake suction ship uses high-pressure water guns to loosen the riverbed silt, uses rake head machinery to cut, mixes the loosened silt with water, and then sucks it into the suction pipeline. The dredging material is loaded into the cabin through the suction pipeline, and when the cabin is full, the rake suction ship transports the dredging material in the cabin to the designated dumping area or backfilling area, reaches the designated position, opens the valve at the bottom of the cabin, accurately backfills or throws the dredging material to the predetermined position, and completes the modification or reinforcement of the underwater topography.

[0004] However, the rake head of the existing rake suction ship is lowered into the water through two fixed supports, the distance between the two fixed supports cannot be adjusted, so the rake head cannot be replaced, and different soil layers have different requirements for the adsorption and cutting ability of the rake head, so the rake head needs to be replaced to achieve the best dredging effect, therefore, there is an urgent need for an underwater backfilling rake suction ship with replaceable rake heads. UTILITY MODEL CONTENTS

[0005] In view of the problems in the prior art, the utility model provides an underwater backfilling rake suction ship with replaceable rake heads.

[0006] The utility model discloses a replaceable rake head's underwater backfilling rake suction ship, including the hull, is equipped with the rake head in one side of the hull, the rake head adopts two steel wires to hang, two the steel wire each adopts a support arm support, each adopts a winch to lift, two the winch is fixed on the top of portal frame, the portal frame is fixed on the hull, the lower extreme of support arm is connected with support base, is equipped with the sliding block that coordinates with the sliding groove below the support base, the sliding groove is fixed on the hull, extends along the longitudinal direction of the hull, two the support base each is connected through screw thread in two ends of a bidirectional screw rod, the bidirectional screw rod is supported by the hull, extends along the longitudinal direction of the hull, is driven by motor II, motor II is installed on the hull.

[0007] The bottom of the support arm is provided with a hollow shaft, the hollow shaft extends along the longitudinal direction of the hull, is supported by the support base and is driven by motor I, the top rear side of the support arm is connected with the top of the portal frame through an electric push rod, and the motor I is installed on the support base.

[0008] A rake head setting groove is arranged on one side of the hull.

[0009] A pulley is installed on the top of the support arm, and the steel wire is crossed and wound on the pulley.

[0010] The utility model has the advantages and technical effects that: by adopting a bidirectional screw rod to drive two support bases to move in opposite directions simultaneously, the distance between the two support bases can be adjusted, so that the rake suction ship can replace rake heads of different sizes, compared with the traditional structure with fixed end support bases, the distance between the two support bases can be quickly adjusted, and different size rake heads can be conveniently replaced, so that the rake suction ship is more suitable for the specific requirements of different soil layers in the dredging area, and the adaptability and efficiency of the operation are improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 A first perspective structural schematic view of the replaceable rake head underwater backfilling rake suction ship is provided in the utility model;

[0012] Fig. 2 A second perspective structural schematic view of the replaceable rake head underwater backfilling rake suction ship is provided in the utility model;

[0013] Fig. 3 A bidirectional screw rod and support base connection structure schematic view of the utility model is provided;

[0014] Fig. 4 A support base installation structure schematic view of the utility model is provided.

[0015] Fig. 101, hull; 102, sliding groove; 103, gantry; 104, winch; 105, steel wire rope; 106, support arm; 107, pulley; 108, rake head; 109, electric push rod; 110, rake head setting groove; 201, bidirectional screw; 202, support; 203, sliding block; 301, motor I; 302, hollow shaft. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be further described in detail below with examples. It should be understood that the specific examples described here are only used to explain the utility model and not to limit the utility model.

[0017] Please see Figs. 1-4 A replaceable rake head underwater backfilling rake suction ship, comprising a hull 101, a rake head 108 is arranged on one side of the hull 101, the rake head 108 is suspended by two steel wire ropes 105, each of the two steel wire ropes 105 is supported by a support arm 106 and lifted by a winch 104, the two winches 104 are fixed on the top of a gantry 103, and the gantry 103 is fixed on the hull 101.

[0018] The lower end of the support arm 106 is connected with a support 202, a sliding block 203 matched with a sliding groove 102 is arranged below the support 202, and the sliding groove 102 is fixed on the hull 101 and extends along the longitudinal direction of the hull 101.

[0019] Each of the two supports 202 is connected with the two ends of a bidirectional screw 201 through a threaded connection, the bidirectional screw 201 is supported by the hull 101, extends along the longitudinal direction of the hull 101 and is driven by a motor II, and the motor II is installed on the hull 101.

[0020] In application, the length of the rake head 109 is determined according to the stratum soil condition, the distance between the two supports 202 is determined according to the length of the rake head 109, the two supports 202 are reversely moved to approach or move away from each other according to the distance, the distance between the two supports 202 is adjusted until the required distance, then the rake head 109 is replaced, so that the rake head 109 is more suitable for the specific requirements of the dredging area, and the adaptability and efficiency of the operation are improved.

[0021] In the embodiment, the bottom of the support arm 106 is provided with a hollow shaft 302, the hollow shaft 302 extends along the longitudinal direction of the hull 101, is supported by the support 202 and is driven by a motor I 301, the top rear side of the support arm 106 is connected with the top of the gantry 103 through an electric push rod 109, and the motor I 301 is installed on the support 202.

[0022] When the inclination of the support arm 106 needs to be adjusted, the motor I 301 is started, and the inclination of the support arm 107 can be adjusted in real time through the rotation of the hollow shaft 302, so that the working posture of the rake head 108 can be changed according to the actual dredging requirements, the rake head 108 can cover different areas more effectively, and the dredging efficiency can be greatly improved. The electric push rod 109 provides stable support for the support arm 106, and ensures that the rake head 108 can be adjusted and positioned smoothly during dredging.

[0023] A rake head placing groove 110 is arranged on one side of the ship body 101. When the rake head 108 is recovered into the ship body 101 during use, it can be stably placed in the rake head placing groove 110, so that the safety risk caused by the movement or inclination of the rake head 108 is reduced.

[0024] A pulley 107 is installed at the top of the support arm 106, and the steel wire rope 105 is crossed on the pulley 107, so that the frictional resistance of the steel wire rope can be reduced.

[0025] The working principle of the utility model is as follows:

[0026] During use, first, the construction area is cleaned underwater, and possible sundries and obstacles are removed, then the construction path of the rake suction ship is determined by placing buoys on the water surface and connecting the steel cable by using the anchor ship, then the length of the rake head is determined according to the topographic position, according to the length, the motor II is started to drive the bidirectional screw rod 201 to rotate, so that the two supports 202 move in opposite directions, approach or move away, adjust the distance between the two supports 202 until the required distance, then replace the rake head 109, so that it is more suitable for the specific requirements of the dredging area, thereby improving the adaptability and efficiency of the operation. Then the cable is laid by starting the winch, and the rake head 108 is lowered to the working surface. The inclination of the support arm 106 is adjusted by starting the motor I 301. When the rake head 108 is recovered into the ship body 101, it is placed in the rake head placing groove 110.

[0027] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A replaceable head underwater backfilling drag suction ship comprising a ship body, a drag head is arranged on one side of the ship body, the drag head is suspended by two steel wires, each of the two steel wires is supported by a support arm and is lifted by a winch, the two winches are fixed on the top of a portal frame, the portal frame is fixed on the ship body, characterized in that: the lower end of the support arm is connected with a support base, a sliding block matched with a sliding groove is arranged below the support base, the sliding groove is fixed on the ship body and extends along the longitudinal direction of the ship body, each of the two support bases is connected with the two ends of a bidirectional screw rod through a threaded connection, the bidirectional screw rod is supported by the ship body, extends along the longitudinal direction of the ship body and is driven by a motor II, the motor II is installed on the ship body, the bottom of the support arm is provided with a hollow shaft, the hollow shaft extends along the longitudinal direction of the ship body, is supported by the support base and is driven by a motor I, the top rear side of the support arm is connected with the top of the portal frame through an electric push rod, and the motor I is installed on the support base. A drag head placing groove is arranged on one side of the ship body. A pulley is installed on the top of the support arm, and the steel wire is crossed and wound on the pulley.

2. An interchangeable head dredger as claimed in claim 1, characterized in that: ​ 3. An interchangeable head dredger as claimed in claim 1, wherein: ​ 4. An interchangeable head dredger as claimed in claim 1, wherein: ​

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