A dredging device for water conservancy projects

Abstract

The present invention provides a silt removal device for a water conservancy project, comprising: a grab assembly, the grab assembly comprising a bracket, a separation bucket and a tipping bucket rotatably connected to the bracket, a receiving chamber for receiving silt formed between the separation bucket and the tipping bucket; a conveying assembly, the conveying assembly being used to convey the silt in the receiving chamber; a grab driving assembly, the grab driving assembly being used to move the position of the grab assembly; a separation assembly, the separation assembly being installed on the inner side of the separation bucket, the separation assembly being used to separate particles in the silt and store the particles in the separation bucket. The beneficial effects of the present invention are as follows: by setting up the separation assembly, larger particles such as stones can be separated and collected and temporarily stored in the separation bucket, and the silt can be transported to a silt collection tank through the conveying assembly, which is suitable for removing silt mixed with sand, gravel and stones on the bottom of the water, and large particles such as stones can be temporarily stored, thereby reducing the time loss caused by multiple lifting and lowering, and improving the silt removal efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy project silt removal, and in particular relates to a water conservancy project silt removal device. Background Art

[0002] Water conservancy projects are constructed to control and allocate natural surface water and groundwater to achieve the goal of eliminating harm and promoting benefits. Water conservancy projects can control water flows, prevent floods, and regulate and distribute water to meet the water resource needs of people's lives and production. Water conservancy projects require the construction of various hydraulic structures, such as dams, dikes, spillways, sluices, inlets, channels, ferries, rafts, and fishways, to achieve their goals. Silt accumulation has always been a major concern in water conservancy structures. Silt accumulation can reduce the functionality of water conservancy structures and even affect their strength, posing a safety hazard.

[0003] Existing dredging equipment includes the following two types: the first is to use a mud pump to extract the bottom silt. This operation mode is not suitable for working environments where there are stones in the silt; the second is to use a grab bucket to grab the silt on the bottom of the water and place it on the shore or in a collection tank. This operation mode can be used in working environments where there are stones in the silt, but frequent grabbing and lifting reduces work efficiency. Summary of the Invention

[0004] In view of this, the present invention aims to provide a dredging device for a water conservancy project, in order to solve at least one of the above-mentioned technical problems.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A desilting device for a water conservancy project, comprising:

[0007] A grab bucket assembly, the grab bucket assembly comprising a bracket, a separation bucket and a tipping bucket rotatably connected to the bracket, wherein a receiving chamber for receiving sludge is formed between the separation bucket and the tipping bucket;

[0008] A conveying assembly, the conveying assembly being used to convey the sludge in the accommodating chamber;

[0009] A grab bucket drive assembly, wherein the grab bucket drive assembly is used to move the position of the grab bucket assembly;

[0010] The separation component is installed inside the separation bucket and is used to separate particles in the sludge and store the particles in the separation bucket.

[0011] Furthermore, the grab bucket drive assembly includes a hull, a support arm fixedly connected to the hull, a pulley is provided at the upper end of the support arm, a winch is fixed on the hull, a wire rope of the winch is wound around the outside of the pulley and fixedly connected to the bracket, and a sludge receiving groove corresponding to the outlet of the conveying assembly is provided on the hull;

[0012] The conveying assembly includes a cylinder and a spiral rotating shaft installed inside the cylinder. The spiral rotating shaft is correspondingly provided with a motor. The housing of the motor is fixedly connected to the cylinder, and the output shaft of the motor is fixedly connected to the spiral rotating shaft.

[0013] Furthermore, a hydraulic cylinder 1 for driving the separation bucket to rotate is correspondingly provided on the bracket, a housing of the hydraulic cylinder 1 is hinged to the bracket, and an output shaft of the hydraulic cylinder 1 is hinged to the separation bucket;

[0014] A hydraulic cylinder 2 for driving the tipping bucket to rotate is correspondingly provided on the bracket. The housing of the hydraulic cylinder 2 is hinged to the bracket, and the output shaft of the hydraulic cylinder 2 is hinged to the tipping bucket.

[0015] Furthermore, a connecting port corresponding to the inlet of the conveying component is opened on the side wall of the separation bucket, and a sealing plate is correspondingly provided to the connecting port. The sealing plate slides with the separation bucket, and the sealing plate seals the connecting port under the action of gravity. A boss corresponding to the conveying component is fixed on the sealing plate.

[0016] Furthermore, the separation assembly includes a collection cover and a transmission roller. The collection cover is provided with a through hole. The collection cover is installed on the inner side of the separation bucket and is located above the communication port. The transmission roller is rotatably connected to the separation bucket. There are multiple transmission rollers. The installation positions of the multiple transmission rollers are sequentially increased along the direction from the opening of the separation bucket to the collection cover. The transmission rollers are correspondingly provided with a drive motor for driving the transmission rollers to rotate.

[0017] A pressure sensor is provided on the collecting cover.

[0018] Furthermore, a plurality of blades are fixed on the outer surface of the transmission roller, the blades are eccentrically arranged with respect to the transmission roller, and the blades are inclined in the rotation direction of the transmission roller. The leading edge of the blade has a cutting edge, and the blades of two adjacent transmission rollers are staggered in the axial direction.

[0019] Furthermore, the transmission roller includes a transmission roller 1 and a transmission roller 2, the transmission roller 1 and the transmission roller 2 are arranged in sequence, the number of the transmission roller 1 is one more than the number of the transmission roller 2, and the axis line connecting the two adjacent transmission rollers 1 is higher than the axis line of the transmission roller 2 between the two adjacent transmission rollers 1;

[0020] A driving gear is fixedly provided on the output shaft of the driving motor, a first gear is fixedly provided on one of the first transmission rollers, a second gear is fixedly provided on one of the second transmission rollers, the second gear and the first gear are both engaged with the driving gear, and the outer diameter of the first gear is smaller than the outer diameter of the second gear;

[0021] The plurality of transmission rollers are each provided with a synchronous pulley, and the plurality of transmission rollers are rotated synchronously by a synchronous belt;

[0022] A plurality of the transmission rollers 2 are each provided with a synchronous pulley, and the plurality of the transmission rollers 2 are rotated synchronously by a synchronous belt.

[0023] Furthermore, a guide assembly is fixedly provided at the inlet end of the conveying assembly, and the guide assembly includes a guide slide and vertical plates fixedly provided on both sides of the guide slide. The guide slide matches the side wall of the separation bucket at the communication port. The guide slide and the two vertical plates form a guide chute. The separation bucket is fixedly provided with a guide block matching the guide chute. The feed port of the conveying assembly corresponds to the position of the communication port.

[0024] The guide assembly is detachably connected to the separation bucket via a limiting assembly.

[0025] Furthermore, the limiting assembly includes a lock core and a compression spring, and a limiting groove is formed on the guide slide. The opening of the limiting groove corresponds to the limiting hole, and the diameter of the limiting hole is smaller than the diameter of the limiting groove.

[0026] The separation bucket is provided with a mounting groove corresponding to the limit groove, the lock core is fixedly connected to the slider, the slider is installed on the inner side of the mounting groove, and a compression spring is provided between the slider and the bottom end of the mounting groove;

[0027] The lock core includes a limiting portion, a connecting portion, and a mounting portion connected in sequence. The diameter of the mounting portion is larger than the diameter of the limiting hole. The length of the connecting portion matches the depth of the limiting hole. A boss with a triangular cross section is provided on the end surface of the limiting portion away from the side opening.

[0028] The lower end surface of the mounting portion is provided with a shielding type photoelectric sensor.

[0029] Furthermore, the separation bucket is provided with a side opening and an upper opening, and the tipping bucket is provided with a side opening and an upper opening. When the side opening of the tipping bucket coincides with the side opening of the separation bucket, a receiving chamber for receiving sludge is formed between the separation bucket and the tipping bucket.

[0030] A plurality of soil-breaking teeth are fixedly provided at the front end of the side opening of the tipping bucket. The soil-breaking teeth protrude from the tipping bucket. Ventilation holes are provided on the soil-breaking teeth, and the ventilation holes are communicated with air supply equipment.

[0031] Compared with the prior art, the hydraulic engineering dredging device of the present invention has the following beneficial effects:

[0032] (1) The silt clearing device for a water conservancy project described in the present invention can separate and collect larger particles such as stones and temporarily store them in a separation bucket through the setting of a separation component, and the silt can be transported to a silt collection tank through a conveying component. It is suitable for clearing silt mixed with sand, gravel and stones on the bottom of the water, and large particles such as stones can be temporarily stored. After a certain amount of particles are collected, the grab bucket driving mechanism can be used to drive the grab bucket assembly to move up and down and pour them out, thereby reducing the time loss caused by multiple lifting and lowering, and improving the silt clearing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 A schematic diagram of the three-dimensional structure of the device according to an embodiment of the present invention;

[0035] Figure 2 A schematic cross-sectional view of the device according to an embodiment of the present invention;

[0036] Figure 3 This is a schematic cross-sectional structure diagram of the limiting component according to an embodiment of the present invention.

[0037] Description of reference numerals:

[0038] 1. Cylinder; 2. Grab bucket drive assembly; 3. Separation bucket; 4. Turning bucket; 5. Guide slide; 101. Feed port; 21. Bracket; 31. Drive roller 1; 32. Drive roller 2; 33. Screw shaft; 34. Collecting hood; 35. Blade; 36. Slider; 371. Limiting part; 372. Connecting part; 373. Mounting part; 361. Compression spring; 51. Limiting groove; 511. Limiting hole; 38. Breaking tooth; 331. Driving gear; 311. First gear; 321. Second gear; 381. Vent; 37. Lock core. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0041] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0042] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0043] like Figures 1 to 3 As shown, a water conservancy project dredging device includes:

[0044] The grab bucket assembly includes a bracket 21, a separation bucket 3 and a tipping bucket 4 rotatably connected to the bracket 21, and a receiving chamber for receiving sludge is formed between the separation bucket 3 and the tipping bucket 4;

[0045] A conveying component, the conveying component is used to convey the sludge in the accommodating chamber;

[0046] Grab bucket drive assembly 2, which is used to move the position of the grab bucket assembly;

[0047] The separation component is installed inside the separation bucket 3 and is used to separate particles in the sludge and store the particles in the separation bucket 3.

[0048] The grab driving assembly 2 includes a hull, a support arm fixedly connected to the hull, a pulley provided at the upper end of the support arm, a winch fixed on the hull, a wire rope of the winch wound around the outside of the pulley and fixedly connected to the bracket 21, and a sludge receiving trough corresponding to the outlet of the conveying assembly provided on the hull;

[0049] The conveying assembly includes a cylinder 1 and a spiral rotating shaft 33 installed inside the cylinder 1. The spiral rotating shaft 33 is correspondingly provided with a motor. The motor housing is fixedly connected to the cylinder 1, and the output shaft of the motor is fixedly connected to the spiral rotating shaft 33.

[0050] A hydraulic cylinder 1 for driving the separation bucket 3 to rotate is correspondingly provided on the bracket 21. The housing of the hydraulic cylinder 1 is hinged to the bracket 21, and the output shaft of the hydraulic cylinder 1 is hinged to the separation bucket 3.

[0051] A hydraulic cylinder 2 for driving the tipping bucket 4 to rotate is correspondingly provided on the bracket 21 . The housing of the hydraulic cylinder 2 is hinged to the bracket 21 , and the output shaft of the hydraulic cylinder 2 is hinged to the tipping bucket 4 .

[0052] A connecting port corresponding to the inlet of the conveying component is opened on the side wall of the separation bucket 3. A sealing plate is provided corresponding to the connecting port. The sealing plate slides with the separation bucket 3. The sealing plate seals the connecting port under the action of gravity. A boss corresponding to the conveying component is fixed on the sealing plate.

[0053] The separation assembly includes a collection cover 34 and a transmission roller. The collection cover 34 has a through hole. The collection cover 34 is installed on the inner side of the separation bucket 3 and is located above the communication port. The transmission roller is rotatably connected to the separation bucket 3. There are multiple transmission rollers. The installation positions of the multiple transmission rollers are successively increased along the direction from the opening of the separation bucket 3 to the collection cover 34. The transmission rollers are respectively provided with a drive motor for driving the transmission rollers to rotate.

[0054] A pressure sensor is provided on the collecting cover 34. When the pressure sensor senses that the pressure value exceeds the set pressure value, it generates a claw-closing signal to the grab bucket driving mechanism to make the separation bucket 3 and the tipping bucket 4 assembled and lifted.

[0055] A plurality of blades 35 are fixed on the outer surface of the transmission roller. The blades 35 are eccentrically arranged with the transmission roller and are inclined to the rotation direction of the transmission roller. The leading edge of the blade 35 has a blade. The blades 35 of the two adjacent transmission rollers are staggered in the axial direction, which is convenient for cutting and refining the harder silt while conveying it.

[0056] The transmission rollers include a transmission roller 1 31 and a transmission roller 2 32. The transmission rollers 1 31 and the transmission roller 2 32 are arranged in sequence. The number of the transmission roller 1 31 is one more than the number of the transmission roller 2 32. The axis line connecting two adjacent transmission rollers 1 31 is higher than the axis line of the transmission roller 2 32 between the two adjacent transmission rollers 1 31.

[0057] A driving gear 331 is fixedly mounted on the output shaft of the driving motor. A first gear 311 is fixedly mounted on one of the driving rollers 31. A second gear 321 is fixedly mounted on one of the driving rollers 32. The second gear 321 and the first gear 311 are both engaged with the driving gear 331. The outer diameter of the first gear 311 is smaller than that of the second gear 321.

[0058] Multiple transmission rollers 31 are provided with synchronous pulleys, and multiple transmission rollers 31 are rotated synchronously through synchronous belts;

[0059] The plurality of transmission rollers 2 32 are all provided with synchronous pulleys, and the plurality of transmission rollers 2 32 are rotated synchronously by means of synchronous belts. The positional relationship and different rotation speeds between the transmission rollers 2 32 and the transmission roller 1 31 make the cutting and thinning effect better.

[0060] A guide assembly is fixedly provided at the inlet end of the conveying assembly, and the guide assembly includes a guide slide 5 and vertical plates fixed on both sides of the guide slide 5. The guide slide 5 matches the side wall of the separation bucket 3 at the communication port. The guide slide 5 and the two vertical plates form a guide chute. The separation bucket 3 is fixedly provided with a guide block matching the guide chute. The feed port 101 of the conveying assembly corresponds to the position of the communication port.

[0061] The guide assembly is detachably connected to the separation bucket 3 via a limiting assembly.

[0062] like Figure 3 As shown, the limiting assembly includes a lock core 37 and a compression spring 361. A limiting groove 51 is formed on the guide slide 5. The opening of the limiting groove 51 corresponds to the limiting hole 511. The diameter of the limiting hole 511 is smaller than the diameter of the limiting groove 51.

[0063] The separation bucket 3 is provided with a mounting groove corresponding to the limit groove 51. The lock core 37 is fixedly connected to the slider 36. The slider 36 is installed on the inner side of the mounting groove. A compression spring 361 is provided between the slider 36 and the bottom end of the mounting groove.

[0064] The lock core 37 includes a stopper 371, a connecting portion 372, and a mounting portion 373, which are connected in sequence. The diameter of the mounting portion 373 is larger than the diameter of the stopper hole 511, and the length of the connecting portion 372 matches the depth of the stopper hole 511. A boss with a triangular cross-section is provided on the end surface of the stopper 371 away from the side opening.

[0065] The boss includes an upper raised surface and a lower raised surface. When the separation bucket 3 rises, the lock core 37 moves upward, and the upper raised surface and the limiting hole 511 move relative to each other, so that the lock core 37 disengages from the limiting hole 511. When the separation bucket 3 descends, when the lock core 37 approaches the limiting groove 51, the limiting hole 511 can slide relative to the lower raised surface to allow the lock core 37 to enter the limiting groove 51.

[0066] A shielding photoelectric sensor is provided on the lower end surface of the mounting portion 373. The photoelectric sensor is used to determine whether the locking assembly is locked or whether there is a situation of separation during use, so as to promptly eliminate the problem.

[0067] The separation bucket 3 has a side opening and an upper opening, while the tipping bucket 4 has a side opening and an upper opening. When the side opening of the tipping bucket 4 overlaps with the side opening of the separation bucket 3, a silt-receiving chamber is formed between the separation bucket 3 and the tipping bucket 4. Multiple breaker teeth 38 are fixed to the front end of the side opening of the tipping bucket 4. The breaker teeth 38 protrude from the tipping bucket 4 and are each provided with a vent 381 connected to the air supply. During silt removal during the movement of the hull, the vents on the breaker teeth 38 assist in silt removal, initially dislodging hardened silt and rocks.

[0068] Working process:

[0069] When this solution is implemented, the present invention can separate and collect larger particles such as stones and temporarily store them in the separation bucket 3 through the setting of the separation component. The silt can be transported to the silt collection tank through the conveying component. It is suitable for clearing silt mixed with sand, gravel and stones on the bottom of the water, and large particles such as stones can be temporarily stored. After a certain amount is collected, the grab bucket drive mechanism can be used to drive the grab bucket component to move up and down and pour it out, reducing the time loss caused by multiple lifting and lowering, and the dredging efficiency is high.

[0070] The rotation of the tipping bucket 4 can, on the one hand, be combined with the separation bucket 3 to prevent the silt and stones inside the accommodating chamber from falling out, and on the other hand, it can assist in the feeding of silt, that is, when it rotates, it can gather the silt in front of the separation bucket 3 toward the separation bucket 3, thereby improving the silt treatment effect and reducing the mixing of mud and water during the cleaning process. The rotation of the separation bucket 3 is used to dump stones and large particles, and maintain the same Figure 2 The location shown in .

[0071] When the dredging device involved in the present application is in use, the cylinder 1 is first adjusted to a suitable height, and then the active driving mechanism is used to drive the grab bucket assembly to sink, the boss of the sealing plate contacts the guide slide 5, and the sealing plate slides. At this time, the connecting port of the separation bucket 3 is connected with the feed port 101 of the conveying assembly, and the separation bucket 3 cooperates with the guide slide 5 and makes the separation bucket 3 slide down to the lock core 37 and lock with the lock buckle. Then the motor drives the active gear 331 to rotate, and drives the transmission roller 1 31 and the transmission roller 2 32 to rotate in the same direction respectively. The silt can fall into the lower end of the separation bucket 3 through the gap between the rotating rollers and flow through the connecting port and the conveying assembly into the silt collection tank. The harder silt is crushed by the blades 35, and the particles with larger diameters (such as stones) are retained above the transmission roller. The transmission roller rotates counterclockwise, and the particles with larger diameters are transported to the collection cover 34 for storage.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A dredging device for a water conservancy project, characterized in that: include: A grab bucket assembly, the grab bucket assembly comprising a bracket (21), a separation bucket (3) and a tipping bucket (4) rotatably connected to the bracket (21), wherein a receiving chamber for receiving sludge is formed between the separation bucket (3) and the tipping bucket (4); A conveying assembly, the conveying assembly being used to convey the sludge in the accommodating chamber; A grab bucket drive assembly (2), wherein the grab bucket drive assembly (2) is used to move the position of the grab bucket assembly; A separation assembly is installed inside the separation bucket (3), and is used to separate particles from the sludge and store the particles in the separation bucket (3); The separation assembly comprises a collecting cover (34) and a transmission roller, wherein a through hole is formed on the collecting cover (34), the collecting cover (34) is mounted on the inner side of the separation bucket (3) and is located above the communication port, the transmission roller is rotatably connected to the separation bucket (3), the number of the transmission rollers is multiple, and the installation positions of the multiple transmission rollers are sequentially increased along the direction from the opening of the separation bucket (3) to the collecting cover (34), and the transmission rollers are correspondingly provided with a driving motor for driving the transmission rollers to rotate; the collection cover (34) is provided with a pressure sensor; A guide assembly is fixedly provided at the inlet end of the conveying assembly, and the guide assembly includes a guide slide (5) and vertical plates fixedly provided on both sides of the guide slide (5); the guide slide (5) matches the side wall of the separation bucket (3) at the communication port; the guide slide (5) and the two vertical plates form a guide chute; a guide block matching the guide chute is fixedly provided on the separation bucket (3); the feed port (101) of the conveying assembly corresponds to the position of the communication port; the guide assembly is detachably connected to the separation bucket (3) through a limit assembly.

2. A water conservancy project dredging device according to claim 1, characterized in that: The grab driving assembly (2) comprises a hull, a support arm fixedly connected to the hull, a pulley is provided at the upper end of the support arm, a winch is fixedly provided on the hull, a steel wire rope of the winch is wound around the outside of the pulley and is fixedly connected to the bracket (21), and a sludge receiving groove corresponding to the outlet of the conveying assembly is provided on the hull; The conveying assembly comprises a cylinder (1) and a spiral rotating shaft (33) installed inside the cylinder (1); the spiral rotating shaft (33) is correspondingly provided with a motor; the housing of the motor is fixedly connected to the cylinder (1); and the output shaft of the motor is fixedly connected to the spiral rotating shaft (33).

3. A water conservancy project dredging device according to claim 1, characterized in that: A hydraulic cylinder 1 for driving the separation bucket (3) to rotate is correspondingly provided on the bracket (21), a housing of the hydraulic cylinder 1 is hinged to the bracket (21), and an output shaft of the hydraulic cylinder 1 is hinged to the separation bucket (3); A hydraulic cylinder 2 for driving the tipping bucket (4) to rotate is correspondingly provided on the bracket (21); a housing of the hydraulic cylinder 2 is hinged to the bracket (21); and an output shaft of the hydraulic cylinder 2 is hinged to the tipping bucket (4).

4. A water conservancy project dredging device according to claim 1, characterized in that: A communication port corresponding to the inlet of the conveying assembly is formed on the side wall of the separation bucket (3), and a sealing plate is provided corresponding to the communication port. The sealing plate is slidably matched with the separation bucket (3), and the sealing plate seals the communication port under the action of gravity. A boss corresponding to the conveying assembly is fixed on the sealing plate.

5. The water conservancy project dredging device according to claim 1, characterized in that: A plurality of blades (35) are fixed on the outer surface of the transmission roller. The blades (35) are eccentrically arranged with respect to the transmission roller and are inclined in the rotation direction of the transmission roller. The leading edge of the blade (35) has a blade tip. The blades (35) of two adjacent transmission rollers are staggered in the axial direction.

6. The hydraulic engineering desilting device according to claim 1, characterized in that: The transmission rollers include a transmission roller 1 (31) and a transmission roller 2 (32), wherein the transmission roller 1 (31) and the transmission roller 2 (32) are arranged in sequence and spaced apart, the number of the transmission roller 1 (31) is one more than the number of the transmission roller 2 (32), and the axis connecting the two adjacent transmission rollers 1 (31) is higher than the axis of the transmission roller 2 (32) between the two adjacent transmission rollers 1 (31); A driving gear (331) is fixedly provided on the output shaft of the driving motor, a first gear (311) is fixedly provided on one of the transmission rollers (31), a second gear (321) is fixedly provided on one of the transmission rollers (32), the second gear (321) and the first gear (311) are both meshed with the driving gear (331), and the outer diameter of the first gear (311) is smaller than the outer diameter of the second gear (321); A plurality of the transmission rollers (31) are each provided with a synchronous pulley, and the plurality of the transmission rollers (31) are rotated synchronously by means of a synchronous belt; A plurality of the transmission rollers 2 (32) are each provided with a synchronous pulley, and the plurality of the transmission rollers 2 (32) are rotated synchronously by means of a synchronous belt.

7. The water conservancy project dredging device according to claim 1, characterized in that: The limiting assembly includes a lock core (37) and a compression spring (361); a limiting groove (51) is formed on the guide slide (5); an opening of the limiting groove (51) corresponds to a limiting hole (511); and a diameter of the limiting hole (511) is smaller than a diameter of the limiting groove (51); The separation bucket (3) is provided with a mounting groove corresponding to the limiting groove (51), the lock core (37) is fixedly connected to the slider (36), the slider (36) is installed on the inner side of the mounting groove, and a compression spring (361) is provided between the slider (36) and the bottom end of the mounting groove; The lock core (37) comprises a limiting portion (371), a connecting portion (372), and a mounting portion (373) connected in sequence. The diameter of the mounting portion (373) is larger than the diameter of the limiting hole (511). The length of the connecting portion (372) matches the depth of the limiting hole (511). A boss with a triangular cross section is provided on the end surface of the limiting portion (371) away from the side opening. The lower end surface of the mounting portion (373) is provided with a shielding photoelectric sensor.

8. The water conservancy project dredging device according to claim 1, characterized in that: The separation bucket (3) is provided with a side opening and an upper opening, and the tipping bucket (4) is provided with a side opening and an upper opening. When the side opening of the tipping bucket (4) overlaps with the side opening of the separation bucket (3), a receiving chamber for receiving sludge is formed between the separation bucket (3) and the tipping bucket (4); A plurality of soil-breaking teeth (38) are fixedly provided at the front end of the side opening of the tipping bucket (4), the soil-breaking teeth (38) protruding from the tipping bucket (4), and each soil-breaking tooth (38) is provided with an air vent (381), which is communicated with an air supply device.

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