River sludge sampling device for hydraulic engineering

Abstract

The utility model relates to the technical field of hydraulic engineering, in particular to a riverway sludge sampling device for hydraulic engineering, which comprises a vehicle body, an attaching pipe is arranged at the bottom of the vehicle body, a plurality of sampling pipes are fixed at the bottom of the attaching pipe, a sampling rod is fixed inside each sampling pipe, and a sampling main hopper and a sampling auxiliary hopper are arranged on the outer side of each sampling rod. A plurality of stabilizing rods are fixed to the bottom of the vehicle body, a stabilizing block is fixed to the bottom of each stabilizing rod through a stabilizing block connecting plate, a stabilizing main plate is rotationally connected to the bottom of each stabilizing block through a rotating shaft, a stabilizing auxiliary plate is rotationally connected to the bottom of each stabilizing main plate through a rotating shaft, and a nut is arranged at the bottom of each stabilizing block; according to the utility model, the main stabilizing plate and the auxiliary stabilizing plate can be unfolded in river bottom sludge through upward movement of the nut, so that the contact surface between the whole equipment and the river bottom sludge is increased, the stability of the equipment is improved, and the sampling accuracy is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of hydraulic engineering, concretely is river channel sludge sampling device for hydraulic engineering. BACKGROUND

[0002] With the continuous development of hydraulic engineering and the enhancement of environmental protection consciousness, the monitoring and treatment of river channel sludge become particularly important. River channel sludge may contain heavy metals, organic matter and other pollutants, which seriously affect water quality and ecological environment. Therefore, efficient and accurate sludge sampling device is needed to support river channel treatment and monitoring work.

[0003] However, the existing sampling method is mostly carried out by manual, which has low sampling efficiency and low sampling accuracy. Moreover, the existing sampling device has poor stability during sampling. To solve the above problems, the utility model designs a river channel sludge sampling device for hydraulic engineering. UTILITY MODEL CONTENT

[0004] In view of the above situation, in order to overcome the defects of prior art, the utility model provides a river channel sludge sampling device for hydraulic engineering, which effectively solves the problems in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a river channel sludge sampling device for hydraulic engineering, comprising a vehicle body, a support rod is fixed on the top of the vehicle body, a plurality of propellers are arranged on the top of the support rod, a connecting plate is also fixed on the top of the support rod, a close-to-rod is fixed on the bottom of the connecting plate, a close-to-pipe is fixed on the bottom of the close-to-rod through a plurality of positioning plates, a plurality of sampling doors are arranged outside the close-to-pipe, a plurality of sampling tubes are fixed on the bottom of the close-to-rod, a sampling rod is fixed in each sampling tube, a sampling main hopper and a sampling auxiliary hopper are arranged on the outside of each sampling rod, a controller is also fixed on the top of the vehicle body, a power supply is fixed on the rear of the controller, a camera is fixed on the right end of the vehicle body, a plurality of roller support rods are fixed on the bottom of the vehicle body, a roller is arranged on the bottom of each roller support rod, a plurality of stabilizing rods are also fixed on the bottom of the vehicle body, a stabilizing block is fixed on the bottom of each stabilizing rod through a stabilizing block connecting plate, a stabilizing main plate is rotatably connected to the bottom of each stabilizing block through a rotating shaft, a stabilizing auxiliary plate is rotatably connected to the bottom of each stabilizing main plate through a rotating shaft, a nut is arranged on the bottom of each stabilizing block, and each stabilizing auxiliary plate is rotatably connected to the nut on the bottom thereof through a rotating shaft.

[0006] Preferably, the support rod top is fixed with multiple propeller motors, each of the propeller motors is rotationally connected with the propeller on the top thereof, each of the roller support rod bottom is fixed with a roller positioning plate, each of the roller positioning plate is rotationally connected with the roller inside thereof through a rotating shaft, and the right end two roller outer sides are rotationally connected with a roller motor, and each of the roller motor is fixedly connected with the roller positioning plate inside thereof.

[0007] Preferably, each of the stabilizing rod bottom is fixed with a stabilizing motor, each of the stabilizing motor bottom is rotationally connected with a stabilizing screw through a rotating shaft, each of the stabilizing screw is slidingly connected with the stabilizing block outside thereof, and each of the stabilizing screw is meshingly connected with the nut outside thereof.

[0008] Preferably, the close-to-pipe outside is fixed with multiple slide rails, each of the slide rail is slidingly connected with the sampling door inside thereof, each of the sampling door outside is fixed with a sampling door positioning rod, each of the sampling door positioning rod outside is slidingly connected with a sampling door positioning plate, each of the sampling door positioning plate is fixedly connected with the close-to-pipe inside thereof, and each of the sampling door positioning rod outside is further provided with a spring.

[0009] Preferably, the close-to-pipe inside is fixed with the sampling pipe, each of the sampling main hopper is rotationally connected with the sampling rod at one end thereof through a rotating shaft, each of the sampling auxiliary hopper is rotationally connected with the sampling rod at one end thereof through a rotating shaft, each of the sampling main hopper rotating shaft top is fixed with a sampling main gear, each of the sampling main gear is meshingly connected with a sampling auxiliary gear, each of the sampling auxiliary gear is fixedly connected with the sampling auxiliary hopper at the bottom thereof through a rotating shaft, each of the sampling main gear top is rotationally connected with a sampling motor, and each of the sampling motor is fixedly connected with the sampling rod at the bottom thereof through a fixing rod.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] The utility model discloses a stabilizing motor drives the stabilizing screw to rotate, can drive the nut to move upwards, so that the stabilizing main plate and the stabilizing auxiliary plate unfold in the river bottom sludge, thereby increasing the contact surface of the whole equipment and the river bottom sludge, thereby increasing the stability of the equipment, thereby guaranteeing the accuracy of sampling, thereby improving the sampling efficiency, thereby guaranteeing the sampling effect.

[0012] The utility model discloses a sampling rod extension can drive the sampling main hopper and the sampling auxiliary hopper to move to the outside, so that the sampling door moves due to the shape of the sampling door, thereby can drive the sampling pipe to open, thereby convenient sampling, and the two sampling door positioning plates are tightly attached due to the sampling door positioning rod and the spring after sampling is completed, thereby guaranteeing the sealing property of the sampling pipe, thereby guaranteeing the sampling accuracy, thereby guaranteeing the sampling effect.

[0013] The utility model discloses a sampling motor can drive sampling main gear rotation to drive sampling main gear rotation to drive sampling auxiliary gear rotation to drive sampling main hopper and sampling auxiliary hopper rotation to complete sampling to realize automation to guarantee sampling effect. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and are used to explain the utility model together with the embodiments of the utility model, and do not constitute the limitation to the utility model.

[0015] In the drawings:

[0016] Figure 1 It is whole schematic diagram of the utility model;

[0017] Figure 2 It is schematic diagram of the utility model stabilizing mechanism;

[0018] Figure 3 It is enlarged schematic diagram of the utility model stabilizing mechanism;

[0019] Figure 4 It is schematic diagram of the utility model close to pipe bottom;

[0020] Figure 5 It is schematic diagram of the utility model sampling door;

[0021] Figure 6 It is internal schematic diagram of the utility model sampling pipe;

[0022] Figure 7 It is schematic diagram of the utility model sampling hopper;

[0023] Figure 8 It is enlarged schematic diagram of the utility model sampling hopper.

[0024] In the drawing: 1 - vehicle body;2 - support rod;3 - propeller;4 - close to the rod;5 - close to the pipe;6 - gyro wheel support rod;7 - stabilizing rod;8 - sampling pipe;9 - slide rail;101 - controller;102 - power supply;103 - camera;201 - connecting plate;301 - propeller motor;401 - positioning plate;601 - gyro wheel positioning plate;602 - gyro wheel;603 - gyro wheel motor;701 - stabilizing block;702 - nut;703 - stabilizing main plate;704 - stabilizing vice plate;705 - stabilizing motor;706 - stabilizing screw;707 - stabilizing block connecting plate;801 - sampling rod;802 - sampling main hopper;803 - sampling auxiliary hopper;804 - sampling main gear;805 - sampling auxiliary gear;806 - sampling motor;901 - sampling door;902 - sampling door positioning plate;903 - sampling door positioning rod;904 - spring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0026] Embodiment one, by Figure 1 , Figure 4 , Figures 6-7The utility model provides a vehicle body 1, the vehicle body 1 adopts alloy material to be made, the vehicle body 1 is used for supporting whole equipment, the vehicle body 1 top is fixed with support rod 2, support rod 2 adopts alloy material to be made, support rod 2 is used for supporting propeller motor 301, support rod 2 top is equipped with a plurality of propeller 3, propeller 3 can drive whole equipment to move vertically under water through rotation, support rod 2 top is also fixed with connecting plate 201, connecting plate 201 adopts alloy material to be made, connecting plate 201 is used for positioning close to rod 4, connecting plate 201 bottom is fixed with close to rod 4, close to rod 4 is telescopic, thereby can drive close to pipe 5 moves up and down, close to rod 4 bottom is fixed with close to pipe 5 through a plurality of positioning plate 401, positioning plate 401 adopts alloy material to be made, close to pipe 5 outside is equipped with a plurality of sets of sampling door 901, sampling door 901 adopts right trapezoidal structure, sampling door 901 is made of alloy material, sampling door 901 can guarantee the sealing property of sampling tube 8, close to rod 4 bottom is fixed with a plurality of sampling tube 8, sampling tube 8 adopts alloy material to be made, sampling tube 8 is used for positioning sampling rod 801, every sampling tube 8 inside is fixed with sampling rod 801, sampling rod 801 is telescopic, thereby can drive sampling main hopper 802 and sampling auxiliary hopper 803 move, every sampling rod 801 outside is equipped with sampling main hopper 802 and sampling auxiliary hopper 803, sampling main hopper 802 and sampling auxiliary hopper 803 adopt alloy material to be made, sampling main hopper 802 and sampling auxiliary hopper 803 are used for sampling sludge, vehicle body 1 top is also fixed with controller 101, controller 101 is used for controlling whole equipment, controller 101 rear part is fixed with power supply 102, power supply 102 provides required energy for whole equipment, vehicle body 1 right -hand member is fixed with camera 103, camera 103 is used for monitoring the movement of whole equipment, vehicle body 1 bottom is fixed with a plurality of gyro wheel support rod 6, gyro wheel support rod 6 adopts alloy material to be made, gyro wheel support rod 6 is used for positioning gyro wheel positioning plate 601, every gyro wheel support rod 6 bottom is equipped with gyro wheel 602, gyro wheel 602 can drive whole equipment to move in the river bottom, vehicle body 1 bottom is also fixed with a plurality of stabilizer 7, stabilizer 7 is telescopic, thereby can drive stabilizing block 701 moves up and down, every stabilizer 7 bottom is fixed with stabilizing block 701 through stabilizing block connecting plate 707, stabilizing block connecting plate 707 adopts alloy material to be made, every stabilizing block 701 bottom is rotatably connected with stabilizing main plate 703 through pivot, stabilizing main plate 703 adopts alloy material to be made, every stabilizing main plate 703 bottom is rotatably connected with stabilizing auxiliary plate 704 through pivot, stabilizing auxiliary plate 704 adopts alloy material to be made,The stable main plate 703 and the stable auxiliary plate 704 are matched so that the stable main plate 703 and the stable auxiliary plate 704 are inserted into the river bottom sludge, thereby increasing the contact area of the whole device with the river bottom sludge, and increasing the stability of the device, the bottom of each stable block 701 is provided with a nut 702, the nut 702 can drive the stable main plate 703 and the stable auxiliary plate 704 to rotate by moving up and down, each stable auxiliary plate 704 is rotationally connected with the nut 702 at the bottom thereof through a rotating shaft, and all the electric devices of the device are waterproof treated.

[0027] In the second embodiment, on the basis of the first embodiment, the following is combined Figures 2-3 、 Figure 5 、 Figure 8The support rod 2 top is fixed with multiple propeller motors 301, the propeller motor 301 can drive the top propeller 3 rotation, each propeller motor 301 is rotationally connected with the top propeller 3, each roller support rod 6 bottom is fixed with roller positioning plate 601, the roller positioning plate 601 is made of alloy material, the roller positioning plate 601 is used for positioning the inside roller 602, each roller positioning plate 601 is rotationally connected with the inside roller 602 through the pivot, the right end two roller 602 outside rotationally connected with the roller motor 603, the roller motor 603 can drive the inside roller 602 rotation, so that the whole equipment can be moved on the water bottom and can be turned, each roller motor 603 is fixedly connected with the inside roller positioning plate 601, each stabilizing rod 7 bottom is fixed with stabilizing motor 705, the stabilizing motor 705 can drive the stabilizing screw 706 rotation, thereby driving the nut 702 up and down, each stabilizing motor 705 bottom is rotationally connected with the stabilizing screw 706 through the pivot, each stabilizing screw 706 is slidingly connected with the outside stabilizing block 701, each stabilizing screw 706 is meshingly connected with the outside nut 702, the close tube 5 outside is fixed with multiple slide rails 9, the slide rail 9 is made of alloy material, the slide rail 9 is used for positioning the inside sampling door 901, each slide rail 9 is slidingly connected with the inside sampling door 901, each sampling door 901 outside is fixed with sampling door positioning rod 903, the sampling door positioning rod 903 is made of alloy material, each sampling door positioning rod 903 outside is slidingly connected with sampling door positioning plate 902, the sampling door positioning plate 902 is made of alloy material, the sampling door positioning plate 902 and the sampling door positioning rod 903 cooperate to position the sampling door 901, each sampling door positioning plate 902 is fixedly connected with the inside close tube 5, each sampling door positioning rod 903 outside is further provided with spring 904, the spring 904 is elastic, so that the two sampling doors 901 are tightly attached when not stressed, the close tube 5 is fixedly connected with the inside sampling tube 8, each sampling main hopper 802 is rotationally connected with the one end sampling rod 801 through the pivot, each sampling auxiliary hopper 803 is rotationally connected with the one end sampling rod 801 through the pivot, each sampling main hopper 802 pivot top is fixed with sampling main gear 804, the sampling main gear 804 can drive the bottom sampling main hopper 802 rotation, while the sampling auxiliary gear 805 can be driven to rotate, each sampling main gear 804 is meshingly connected with sampling auxiliary gear 805, the sampling auxiliary gear 805 can drive the bottom sampling auxiliary hopper 803 rotation, each sampling auxiliary gear 805 is fixedly connected with the bottom sampling auxiliary hopper 803 through the pivot,Each of the sampling main gear 804 is rotatably connected with a sampling motor 806 at the top, the sampling motor 806 can drive the sampling main gear 804 to rotate, each of the sampling motor 806 is fixedly connected with the sampling rod 801 at the bottom through a fixing rod,

[0028] In use of the device, the worker places the whole device underwater, at this time the whole device can be moved to the river bottom due to the gravity of the device, at this time the controller 101 controls the camera 103 to start working, so as to monitor the environment of the river bottom, further the controller 101 controls the two roller motors 603 to work cooperatively, so as to drive the two rollers 602 at the left end to rotate cooperatively, so as to drive the whole device to be movable on the river bottom while being reversible, when the whole device moves to the desired position, the controller 101 controls the stabilizing rod 7 to be elongated, so as to make the stabilizing motor 705 inserted into the river bottom, further the controller 101 controls the plurality of stabilizing motors 705 to work, so as to drive the plurality of stabilizing screws 706 to rotate, thereby driving the nut 702 to move upward, so as to drive the stabilizing auxiliary plate 704 and the stabilizing main plate 703 to be opened, so as to increase the contact area of the whole device and the sludge on the river bottom, so as to improve the stability of the device, so as to ensure the sampling effect, further the controller 101 controls the close-to-rod 4 to be elongated, so as to drive the close-to-pipe 5 to move downward, when the controller 101 monitors that the close-to-rod 4 is elongated to the desired size, the controller 101 controls the close-to-rod 4 to stop working, at this time the excess sludge falls out of the close-to-pipe 5 along the positioning plate 401, further the controller 101 controls one or more sampling rods 801 to be elongated according to the requirement, so as to drive the sampling main hopper 802 and the sampling auxiliary hopper 803 to move outward, at this time the sampling main hopper 802 and the sampling auxiliary hopper 803 are close to each other, when the sampling main hopper 802 and the sampling auxiliary hopper 803 are close to the sampling door 901, due to the elongation of the sampling rod 801, the slide rail 9 moves due to the slide rail 9, so as to make the sampling pipe 8 open, further the controller 101 controls the sampling motor 806 to work, so as to drive the sampling main gear 804 to rotate, thereby driving the sampling auxiliary gear 805 to rotate, so as to make the sampling main hopper 802 and the sampling auxiliary hopper 803 open, further the elongation of the sampling rod 801 can make the sludge clamped inside the sampling main hopper 802 and the sampling auxiliary hopper 803, further the controller 101 controls the sampling motor 806 to work reversely, so as to drive the sampling main hopper 802 and the sampling auxiliary hopper 803 to close, further the controller 101 controls the sampling rod 801 to work reversely, so as to make the sampling main hopper 802 and the sampling auxiliary hopper 803 located inside the sampling pipe 8, at this time due to the action of the sampling door positioning rod 903 and the spring 904, the two sampling doors 901 are close to each other, so as to ensure the sealing of the sampling pipe 8, so as to complete the sampling work, further the controller 101 controls the stabilizing motor 705 to be homed, further the controller 101 controls the plurality of propeller motors 301 to work, so as to drive the plurality of propellers 3 to rotate, so as to drive the whole device to move upward, thereby making the whole device reach the water surface,Further workers will drag the entire device to the shore, further by controlling the sampling rod 801 and the sampling motor 806 can take out the sample.

[0029] The working procedure of the utility model is: when using the device, the staff places the whole device underwater, at this time the device gravity can move the whole device to the river bottom, at this time the controller 101 controls the camera 103 to start working, thereby can monitor the river bottom environment, further the controller 101 controls two cooperation of the gyro wheel motor 603, thereby drives left end two cooperation of the gyro wheel 602 rotation, thereby drives the whole device movable on the river bottom can reverse, when the whole device moves to the required position, the controller 101 controls the stabilizing rod 7 extension, thereby makes the stabilizing motor 705 insert the river bottom, further the controller 101 controls multiple stabilizing motor 705 work, thereby drives multiple stabilizing screw rod 706 rotation, further drives the nut 702 upward movement, thereby drives the stabilizing auxiliary plate 704 and the stabilizing main plate 703 open, thereby increases the whole device and the river bottom sludge contact surface, thereby improves the stability of the device, thereby guarantees the sampling effect, further the controller 101 controls the close-to-rod 4 extension, thereby drives the close-to-pipe 5 downward movement, when the controller 101 monitors the close-to-rod 4 extension required size after the controller 101 controls the close-to-rod 4 stop working, at this time the excess sludge along the positioning plate 401 drops out the close-to-pipe 5, further the controller 101 according to the demand control one or more sampling rod 801 extension, thereby drives the sampling main hopper 802 and the sampling auxiliary hopper 803 outward movement, at this time the sampling main hopper 802 and the sampling auxiliary hopper 803 close, when the sampling main hopper 802 and the sampling auxiliary hopper 803 close the sampling door 901, because the sampling rod 801 extension can make the slide rail 9 due to the slide rail 9 reason movement, thereby can make the sampling pipe 8 open, further the controller 101 controls the sampling motor 806 work, thereby drives the sampling main gear 804 rotation, thereby drives the sampling auxiliary gear 805 rotation, thereby makes the sampling main hopper 802 and the sampling auxiliary hopper 803 open, further through the extension sampling rod 801 can make the sludge be clamped to the sampling main hopper 802 and the sampling auxiliary hopper 803 inside, further the controller 101 controls the sampling motor 806 reverse work, thereby drives the sampling main hopper 802 and the sampling auxiliary hopper 803 close, further the controller 101 controls the sampling rod 801 reverse work, thereby makes the sampling main hopper 802 and the sampling auxiliary hopper 803 be located the sampling pipe 8 inside, at this time because the sampling door positioning rod 903 and the spring 904 make two sampling door 901 close, thereby guarantees the sealing property of the sampling pipe 8, thereby completes the sampling work, further the controller 101 controls the stabilizing motor 705 homing, further the controller 101 controls multiple propeller motor 301 work, thereby drives multiple propeller 3 rotation, thereby can drive the whole device upward movement,Thus the whole device is driven to the water surface, and the staff further drags the whole device to the shore, and further through the control of the sampling rod 801 and the sampling motor 806, the sample can be taken out.

[0030] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0031] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A river sludge sampling device for water conservancy projects, characterized in that: The utility model provides a vehicle body (1), the top of support pole (2) is fixed with in vehicle body (1), the top of support pole (2) is equipped with a plurality of propeller (3), the top of support pole (2) is still fixed with connecting plate (201), the bottom of connecting plate (201) is fixed with close to pole (4), the bottom of close to pole (4) is fixed with close to pipe (5) through a plurality of positioning plate (401), the outside of close to pipe (5) is equipped with a plurality of groups of sampling door (901), the bottom of close to pole (4) is fixed with a plurality of sampling pipe (8), every inside sampling pipe (8) is fixed with sampling pole (801), every outside sampling pole (801) is equipped with sampling main hopper (802) and sampling auxiliary hopper (803), the top of vehicle body (1) is still fixed with controller (101), the rear of controller (101) is fixed with power supply (102), the right end of vehicle body (1) is fixed with camera (103), the bottom of vehicle body (1) is fixed with a plurality of gyro wheel support pole (6), every bottom gyro wheel support pole (6) is equipped with gyro wheel (602), the bottom of vehicle body (1) is still fixed with a plurality of stabilizer bar (7), every bottom stabilizer bar (7) is fixed with stabilizer block (701) through stabilizer block connecting plate (707), every bottom stabilizer block (701) is rotatably connected with stabilizer main plate (703) through pivot, every bottom stabilizer main plate (703) is rotatably connected with stabilizer auxiliary plate (704) through pivot, every bottom stabilizer block (701) is equipped with nut (702), every stabilizer auxiliary plate (704) with its bottom nut (702) rotatably connected through pivot.

2. The riverway sludge sampling device for hydraulic engineering according to claim 1, characterized in that: The top of support pole (2) is fixed with a plurality of propeller motors (301), every propeller motor (301) is rotatably connected with the propeller (3) on its top, the bottom of every gyro wheel support pole (6) is fixed with gyro wheel positioning plate (601), every gyro wheel positioning plate (601) is rotatably connected with the gyro wheel (602) in its inside through pivot, the outside of right end two gyro wheels (602) is rotatably connected with gyro wheel motor (603), every gyro wheel motor (603) is fixedly connected with the gyro wheel positioning plate (601) in its inside.

3. The riverway sludge sampling device for hydraulic engineering according to claim 1, characterized in that: Every bottom stabilizer bar (7) is fixed with stabilizer motor (705), every bottom stabilizer motor (705) is rotatably connected with stabilizer screw rod (706) through pivot, every stabilizer screw rod (706) is slidably connected with the stabilizer block (701) on its outside, every stabilizer screw rod (706) is meshingly connected with the nut (702) on its outside.

4. The riverway sludge sampling device for hydraulic engineering according to claim 1, characterized in that: The close-to-pipe (5) is externally fixed with multiple groups of slide rails (9), each of which is in sliding connection with the sampling door (901) inside, each sampling door (901) is externally fixed with a sampling door positioning rod (903), each sampling door positioning rod (903) is externally in sliding connection with a sampling door positioning plate (902), each sampling door positioning plate (902) is in fixed connection with the close-to-pipe (5) inside, and each sampling door positioning rod (903) is externally provided with a spring (904).

5. The riverway sludge sampling device for hydraulic engineering according to claim 4, characterized in that: The close-to-pipe (5) is in fixed connection with the sampling pipe (8) inside, each sampling main hopper (802) is in rotary connection with the sampling rod (801) at one end through a rotating shaft, each sampling auxiliary hopper (803) is in rotary connection with the sampling rod (801) at one end through a rotating shaft, the top of each sampling main hopper (802) is fixed with a sampling main gear (804), each sampling main gear (804) is in meshing connection with a sampling auxiliary gear (805), each sampling auxiliary gear (805) is in fixed connection with the sampling auxiliary hopper (803) at the bottom through a rotating shaft, and the top of each sampling main gear (804) is in rotary connection with a sampling motor (806), and each sampling motor (806) is in fixed connection with the sampling rod (801) at the bottom through a fixed rod.

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