Nuclear power plant tunnel marine organism cleaning device

Abstract

The present invention relates to a marine organism cleaning device for a nuclear power plant tunnel, which comprises a chassis, a conveying unit arranged on the chassis and moving with the chassis, and flank units arranged on opposite sides of the conveying unit; the flank units are used for gathering marine organisms on the arc surface of the inner wall of the seabed water intake tunnel towards the direction close to the conveying unit, and the conveying unit is used for centrally conveying the marine organisms in the advancing direction of the chassis to the chassis; the flank unit includes a flank main frame, a screw conveyor assembly and a screw drive hydraulic cylinder; one end of the screw drive hydraulic cylinder is hinged to the flank main frame, and the other end is hinged to the screw conveyor assembly; the screw conveyor assembly is provided with a guide rod parallel to its length direction, and the screw conveyor assembly is sleeved on the guide rod and can move under the drive of the screw drive hydraulic cylinder. The flank unit cleans and peels off the marine organisms and gathers them to the conveying unit for further collection. The screw conveyor assembly can axially move to push and disperse the materials, solve the problem of jamming, and at the same time can assist in the conveying of the materials.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power plant tunnel cleaning, and particularly to a device for cleaning marine organisms in nuclear power plant tunnels. Background Art

[0002] After long-term use of the submarine water intake tunnel, a large number of marine organisms will grow on the inner wall of the tunnel. Excessive marine organisms will reduce the water intake area of the water intake tunnel, and thus have a significant impact on the water intake capacity of the tunnel. The amount of marine organisms in the submarine water intake tunnel is huge and there are many sundries (such as steel bars, stones, etc.). After the tunnel is cleaned, the marine organisms are piled up on the arc surface and the middle plane of the inner wall of the tunnel.

[0003] Due to the tunnel structure limitation, it is difficult to completely clean the marine organisms on the arc surface of the inner wall of the tunnel, and there are often residues of marine organisms; at the same time, the bottom of the tunnel is slippery, the passage is narrow, and the passage of large equipment is restricted. The tunnel should also minimize local stress as much as possible to avoid causing internal cracks. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a device for cleaning marine organisms in nuclear power plant tunnels.

[0005] The technical solution adopted by the present invention to solve its technical problems is: to construct a device for cleaning marine organisms in nuclear power plant tunnels, which includes a chassis movable along the extension direction of the submarine water intake tunnel, a conveying unit arranged on the chassis and moving with the chassis, and wing units arranged on opposite sides of the conveying unit;

[0006] The wing units are used to gather the marine organisms on the arc surface of the inner wall of the submarine water intake tunnel towards the direction close to the conveying unit, and the conveying unit is used to centrally convey the marine organisms in the forward direction of the chassis to the chassis;

[0007] The wing unit includes a wing main frame, a screw conveyor assembly and a screw drive hydraulic cylinder; one end of the screw drive hydraulic cylinder is hinged to the wing main frame, and the other end is hinged to the screw conveyor assembly; the screw conveyor assembly is provided with a guide rod parallel to its length direction, and the screw conveyor assembly is sleeved on the guide rod and can move under the drive of the screw drive hydraulic cylinder.

[0008] Preferably, the screw conveyor assembly includes a screw drive frame, a screw tail frame, a screw conveyor and a hydraulic motor. The screw drive frame and the screw tail frame are sleeved on both ends of the guide rod, and the screw drive frame is hinged to the screw drive hydraulic cylinder; both the screw drive frame and the screw tail frame are provided with bearing mounting structures, and both ends of the screw conveyor are respectively installed in the two bearing mounting structures; the hydraulic motor is fixedly connected to the screw drive frame and drives the screw conveyor to rotate forward and backward through a transmission device.

[0009] Preferably, the two flank units are hinged to the chassis;

[0010] The marine organism cleaning device for the nuclear power plant tunnel further includes two flank driving hydraulic cylinders. One end of each flank driving hydraulic cylinder is connected to the chassis, and the opposite end is hinged to one of the flank units. After the flank units are opened to the working state, the flank driving hydraulic cylinders provide a constant supporting force for the flank units.

[0011] Preferably, the flank unit and the chassis are hinged through a hinge assembly;

[0012] The hinge assembly includes a pin shaft arranged on the chassis; a sleeve arranged on the flank unit and sleeved on the outer circumference of the pin shaft. The sleeve is relatively rotatable with respect to the pin shaft in the circumferential direction, and the sleeve is relatively movable with respect to the pin shaft in the axial direction; a hinge frame arranged on the chassis and connected to one end of the pin shaft. A floating gap is formed between the hinge frame and the sleeve for the sleeve to move relatively with respect to the pin shaft in the axial direction; a pin shaft seat arranged on the flank unit and detachably connected to the opposite end of the pin shaft.

[0013] Preferably, the marine organism cleaning device for the nuclear power plant tunnel further includes an auxiliary connection unit. The flank unit is connected to the chassis through the auxiliary connection unit on the side facing away from the screw conveyor assembly. The auxiliary connection unit includes a support plate, a roller, a floating support, and a fixed support;

[0014] The support plate is fixedly connected to the flank unit. The support plate is provided with an arc groove whose axis coincides with the rotation axis of the flank unit; the roller is arranged in the arc groove and can roll in the arc groove. A first guide shaft is penetrated through the roller; the fixed support is fixedly connected to the chassis. A second guide shaft is penetrated through the fixed support; one end of the floating support is hinged to the first guide shaft, and the other end is hinged to the second guide shaft.

[0015] Preferably, each flank unit further includes a plurality of scraping mechanisms. The plurality of scraping mechanisms are arranged in an arc shape at the bottom edge of the flank main frame and match the arc surface on the inner wall of the submarine water intake tunnel; in the working state, each scraping mechanism is always in contact with the arc surface on the inner wall of the submarine water intake tunnel.

[0016] Preferably, each scraping mechanism includes a housing arranged on the flank main frame, a telescopic body arranged in the housing, and a scraping plate arranged at the bottom of the telescopic body;

[0017] The telescopic body comprises a guide shaft and a first elastic member; one end of the first elastic member abuts against the inner top wall of the shell, and the other end opposite thereto abuts against the guide shaft; one end of the guide shaft away from the first elastic member is connected to the scraper; the scraper can move back and forth along the axial direction of the guide shaft to keep in contact with the arc surface on the inner wall of the seabed water intake tunnel;

[0018] The shape of the scraper corresponds to the arc surface setting on the inner wall of the seabed water intake tunnel.

[0019] Preferably, one end of the guide shaft comprises a first portion and a second portion connected axially; a diameter of the first portion is smaller than a diameter of the second portion; a shaft shoulder is defined between the first portion and the second portion;

[0020] The other end of the first elastic member abuts against the shaft shoulder.

[0021] Preferably, the telescopic body further comprises a scraper mounting frame;

[0022] The scraper mounting frame is detachably connected to an end of the guide shaft away from the first elastic member, and the scraper is mounted on the scraper mounting frame.

[0023] Preferably, the conveying unit comprises two symmetrically arranged mounting side plates and a chain rake mechanism, the two mounting side plates are connected to the chassis, and the chain rake mechanism is arranged between the two mounting side plates;

[0024] In working state, the spiral conveying assembly conveys the marine organisms on opposite sides of the chain rake mechanism in a direction close to the chain rake mechanism, and the chain rake mechanism conveys the marine organisms in the forward direction of the chassis to the side opposite to the forward direction of the chassis.

[0025] Preferably, the chain rake mechanism comprises a driving shaft, a driven shaft, a chain and a rack;

[0026] The two ends of the driving shaft and the driven shaft are respectively passed through the two mounting side plates, and the driving shaft and the driven shaft are arranged in parallel; the driving shaft and the driven shaft are connected through the chain transmission; the rack is arranged on the chain; the driving shaft is connected to the driving motor.

[0027] Preferably, the chain rake mechanism further comprises an induction gear arranged at one end of the driving shaft, and a rotation speed sensor fixed to the chassis for sensing the rotation speed of the induction gear.

[0028] Preferably, the chain rake mechanism further comprises a guide block and a pressure block, the mounting side plate is provided with a movable groove, the guide block is fixedly connected to the chassis and can be movably inserted into the movable groove, and the pressure block fixes the guide block at a designated position on the movable groove through a fastener.

[0029] Preferably, the chain harrow mechanism further includes a guiding pressing plate and an adjusting jackscrew. The guiding pressing plate is fixedly connected to a side of the mounting side plate facing away from the chain harrow mechanism, and the adjusting jackscrew passes through the guiding pressing plate and abuts against the chassis.

[0030] Preferably, a hollow structure for marine organisms to enter is provided at the bottom of the mounting side plate.

[0031] Preferably, the nuclear power plant tunnel marine organism cleaning device further includes a supporting wheel provided on the flank unit.

[0032] Preferably, the nuclear power plant tunnel marine organism cleaning device further includes a knife plate provided on the chassis for scraping the bottom plane of the tunnel.

[0033] Implementing the present invention has the following beneficial effects: As the chassis advances, the flank unit cleans and peels off the marine organisms on the arc surface of the tunnel inner wall and gathers them to the conveying unit for further collection. When the spiral conveying assembly gets stuck during operation, the spiral drive hydraulic cylinder can drive the spiral conveying assembly to axially move to disperse the materials, solve the jamming problem, and at the same time assist in material conveying. Description of the Drawings

[0034] The present invention will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0035] Figure 1 is a schematic structural diagram of the nuclear power plant tunnel marine organism cleaning device in some embodiments of the present invention;

[0036] Figure 2 is a schematic structural diagram of the flank unit in one perspective in some embodiments of the present invention;

[0037] Figure 3 is a schematic structural diagram of the flank unit in another perspective in some embodiments of the present invention;

[0038] Figure 4 is a structural sectional view of the scraping mechanism in some embodiments of the present invention;

[0039] Figure 5 is a partial side view of the nuclear power plant tunnel marine organism cleaning device in some embodiments of the present invention;

[0040] Figure 6 is a schematic structural diagram of the hinge assembly in some embodiments of the present invention;

[0041] Figure 7 is a partial top view of the nuclear power plant tunnel marine organism cleaning device in some embodiments of the present invention;

[0042] Figure 8 isFigure 7 Partial enlarged view of part A;

[0043] Figure 9 It is a side schematic view of a marine organism cleaning device for a nuclear power plant tunnel in some embodiments of the present invention;

[0044] Figure 10 is Figure 9 Partial enlarged view of part B;

[0045] Figure 11 It is a structural schematic view of a conveying unit in a perspective of some embodiments of the present invention;

[0046] Figure 12 It is a partial top view of the conveying unit in some embodiments of the present invention;

[0047] Figure 13 is Figure 12 Partial enlarged view of part C;

[0048] Figure 14 It is a sectional schematic view of the conveying unit in some embodiments of the present invention. Detailed implementation manners

[0049] For a clearer understanding of the technical features, objectives, and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientation or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are based on the orientation or positional relationships shown in the drawings and are constructed and operated in a specific orientation, and are only for the convenience of describing the technical solution, rather than indicating that the indicated devices or elements must have a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0050] It should also be noted that, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation", "setting", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. When an element is referred to as "on" or "under" another element, the element can be "directly" or "indirectly" located above the other element, or there may also be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the technical solution of the present invention, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. However, those skilled in the art should clearly understand that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present invention.

[0052] Figures 1 to 14The figure shows a marine organism cleaning device for nuclear power plant tunnels in some embodiments of the present invention. The marine organism cleaning device for nuclear power plant tunnels is used for cleaning and gathering and conveying marine organisms on the inner arc wall and the bottom plane of the tunnel. It may include a chassis 1 that can move along the extension direction of the submarine water intake tunnel, a conveying unit 2 arranged on the chassis 1 and moving with the chassis 1, and flank units 3 arranged on opposite sides of the conveying unit 2. The flank units 3 are used to gather the marine organisms on the arc surface of the inner wall of the submarine water intake tunnel towards the conveying unit 2. The conveying unit 2 is used to centrally convey the marine organisms in the advancing direction of the chassis 1 to the chassis 1. It can be understood that the flank units 3 on both sides can be symmetrically arranged or asymmetrically arranged. Each flank unit 3 is arranged at a certain angle with the conveying unit 2. Thus, as the chassis 1 advances, the marine organisms on both sides are gathered to the middle under the blockage of the flank units 3, that is, gathered to the conveying unit 2. Moreover, the bottom edge of each flank unit 3 is adapted to the arc surface on the inner wall of the tunnel. Thus, as the chassis 1 advances, the marine organisms on the arc surface are shoveled up and at the same time gathered towards the conveying unit 2. Further, on the chassis 1, a milling mechanism may be further arranged behind the conveying unit 2. After the marine organisms are conveyed by the conveying unit 2 to the side opposite to the advancing direction of the chassis 1, they enter the milling mechanism for further collection and cleaning. The milling mechanism includes a housing 16 and a milling unit (not shown) arranged in the housing 16.

[0053] As Figure 2 and Figure 3 shown, the flank unit 3 includes a flank main frame 31, a screw conveyor assembly 32, and a screw drive hydraulic cylinder 33. One end of the screw drive hydraulic cylinder 33 is hinged to the flank main frame 31, and the other end is hinged to the screw conveyor assembly 32. The screw conveyor assembly 32 is provided with a guide rod 311 parallel to its length direction. The screw conveyor assembly 32 is sleeved on the guide rod 311, forming a limiting sliding pair with the guide rod 311 and can move under the drive of the screw drive hydraulic cylinder 33. When the screw conveyor assembly is stuck during operation, the screw drive hydraulic cylinder can drive the screw conveyor assembly to axially move to push and disperse the materials, solve the sticking problem, and at the same time assist in material conveying.

[0054] In some embodiments, the spiral conveying assembly 32 may include a spiral drive frame 321, a spiral tail frame 322, a spiral conveyor 323, and a hydraulic motor 324. The spiral drive frame 321 and the spiral tail frame 322 are sleeved at both ends of the guide rod 311, and the spiral drive frame 321 is hinged to the spiral drive hydraulic cylinder 33. Both the spiral drive frame 321 and the spiral tail frame 322 are provided with bearing mounting structures, and both ends of the spiral conveyor 323 are respectively mounted on the two bearing mounting structures, and its axis is parallel to the plane of the flank main frame 31. The hydraulic motor 324 is fixedly connected to the spiral drive frame 321 and drives the spiral conveyor 323 to rotate forward and backward through a transmission device, so as to gather the marine organisms on the arc surface of the inner wall of the submarine water intake tunnel in the direction close to the conveying unit 2.

[0055] In some embodiments, the two flank units 3 are hinged to the chassis 1, so that the flank units 3 located on both sides of the conveying unit 2 can perform opening and closing movements together relative to the chassis 1 or rather relative to the conveying unit 2, and moreover, the opening and closing movements can be horizontal opening and closing movements parallel to the bottom plane 40 of the tunnel.

[0056] In some embodiments, the nuclear power plant tunnel marine organism cleaning device further includes two flank drive hydraulic cylinders 5. One end of each flank drive hydraulic cylinder 5 is connected to the chassis 1, and the opposite end is hinged to a flank unit 3. Each flank drive hydraulic cylinder 5 hydraulically drives a flank unit 3, so that under the drive of the two flank drive hydraulic cylinders 5, the two flank units 3 perform opening and closing movements together relative to the conveying unit 2 or rather relative to the chassis 1 to adjust the included angle formed between it and the conveying unit 2 or between it and the chassis 1. After the flank unit 3 is opened to the working state, the flank drive hydraulic cylinder 5 provides a constant supporting force for the flank unit 3. Preferably, the flank drive hydraulic cylinder 5 is an oil cylinder.

[0057] Such as Figure 6As shown, in some embodiments, the flank unit 3 is hinged to the chassis 1 through a hinge assembly. The hinge assembly includes a pin shaft 11, a sleeve 12, a hinge frame 13, and a pin shaft seat 14. The pin shaft 11 is arranged on the chassis 1. The sleeve 12 is arranged on the flank unit 3 and sleeved on the outer circumference of the pin shaft 11. The sleeve 12 is relatively rotatable with respect to the pin shaft 11 in the circumferential direction, and the sleeve 12 is relatively movable with respect to the pin shaft 11 in the axial direction. The hinge frame 13 is arranged on the chassis 1 and connected to one end of the pin shaft 11. A floating gap is formed between the hinge frame 13 and the sleeve 12 for the sleeve 12 and the pin shaft 11 to move relatively in the axial direction. The pin shaft seat 14 is arranged on the flank unit 3 and detachably connected to the opposite other end of the pin shaft 11 through a connecting member such as a bolt to fix the other end of the pin shaft 11 on the flank unit 3. The flank unit 3 can perform an opening and closing movement relative to the chassis 1, and can also float up and down relative to the chassis 1 when the external force changes, realizing its adaptive floating function to adapt to the change of the driving situation. In addition, the adaptive floating function of the flank unit 3 can also avoid generating excessive local stress on the tunnel structure and causing internal cracks.

[0058] As Figures 7 to 10 shown, in some embodiments, the nuclear power plant tunnel marine organism cleaning device further includes an auxiliary connection unit 4. The flank unit 3 is connected to the chassis 1 through the auxiliary connection unit 4 on the side facing away from the screw conveyor assembly 32. The auxiliary connection unit 4 includes a support plate 41, a roller 42, a floating support 43, and a fixed support 44. The support plate 41 is fixedly connected to the flank unit 3. The support plate 41 is provided with an arc groove 411 whose axis coincides with the rotation axis of the flank unit 3. The roller 42 is arranged in the arc groove 411 and can roll in the arc groove 411. The roller 42 is provided with a first guide shaft. The fixed support 44 is fixedly connected to the chassis 1. The fixed support 44 is provided with a second guide shaft. One end of the floating support 43 is hinged to the first guide shaft, and the other end is hinged to the second guide shaft. Preferably, the fixed support 44 is provided with a vacant section such that the floating support 43 can move up and down on the second guide shaft. When the flank unit 3 floats, the floating support 43 can perform a follow-up movement. The auxiliary connection unit 4 strengthens the hinge structure strength and stability at the bottom of the flank unit 3. When the amount of material pushed by the front end of the device is large and the reaction force received by the device is huge, the overall structure can have better stiffness and force uniformity.

[0059] As Figure 3 and Figure 4 shown, in some embodiments, each flank unit 3 further includes a plurality of scraping mechanisms 34. The plurality of scraping mechanisms 34 are arranged in an arc shape at the bottom edge of the flank main frame 31 and are matched with the arc surface on the inner wall of the submarine water intake tunnel. In the working state, each scraping mechanism 34 is always in contact with the arc surface on the inner wall of the submarine water intake tunnel.

[0060] Specifically, the side wing main frame 31 may include a straight upper edge and an arc-shaped bottom edge, and a plurality of scraping mechanisms 34 are arranged along the bottom edge of the side wing main frame 31, so as to present an arc-shaped arrangement form. Alternatively, a plurality of scraping mechanisms 34 with different lengths may also be arranged in sequence, so as to present an arc-shaped arrangement form on the bottom edge of the side wing main frame 31.

[0061] Furthermore, each scraping mechanism 34 includes a housing 341 arranged on the side wing main frame 31, a telescopic body arranged in the housing 341, and a scraping plate 342 arranged at the bottom of the telescopic body. The telescopic body includes a guide shaft 344 and a first elastic member 345. One end of the first elastic member 345 abuts against the inner top wall of the housing 341, and the opposite end abuts against the guide shaft 344. The first elastic member 345 may be a spring and may be in a pre-compressed state to provide a pre-pressure for the scraping plate 342. One end of the guide shaft 344 away from the first elastic member 345 is connected to the scraping plate 342. The scraping plate 342 can move back and forth along the axial direction of the guide shaft 344 to always keep in a state of fitting the arc surface on the inner wall of the submarine water intake tunnel. The shape of the scraping plate 342 is set corresponding to the arc surface on the inner wall of the submarine water intake tunnel, so as to better adapt to the change of driving conditions and the change of position on the tunnel arc surface, and has good driving control performance and can well adapt to the narrow passage inside the tunnel.

[0062] In addition, when the chassis 1 deviates to one side, the positions of the two side wing units 3 on the arc surface inside the tunnel will change. Thanks to the telescopic adjustment form of the telescopic body, the scraping mechanism 34 can telescopically adjust its own shape to re-adapt to the radian of the new position on the arc surface inside the tunnel, and the adaptation process is a natural transition adaptation. From this perspective, it can also prove that the side wing unit 3 has good offset self-adaptability when driving in the tunnel.

[0063] Furthermore, one end of the guide shaft 344 includes an axially connected first part and a second part. The diameter of the first part is smaller than that of the second part. A shoulder is defined between the first part and the second part. The opposite end of the first elastic member 345 abuts against the shoulder to strengthen the firm connection between the guide shaft 344 and the first elastic member 345.

[0064] Furthermore, the telescopic body further includes a scraping plate mounting bracket 343. The scraping plate mounting bracket 343 and the end of the guide shaft 344 away from the first elastic member 345 can be detachably connected through connecting pieces such as bolts, and the scraping plate 342 is mounted on the scraping plate mounting bracket 343, so as to facilitate the replacement of the scraping plate 342.

[0065] Such as Figures 11 to 14As shown, in some embodiments, the conveying unit 2 includes two symmetrically arranged mounting side plates 21 and a chain rake mechanism, the two mounting side plates 21 are connected to the chassis 1, and the chain rake mechanism is arranged between the two mounting side plates 21. In the working state, the spiral conveying assembly 32 conveys the marine organisms located on the opposite sides of the chain rake mechanism in a direction close to the chain rake mechanism, and the chain rake mechanism centrally conveys the marine organisms in the forward direction of the chassis 1 to the side opposite to the forward direction of the chassis 1.

[0066] In some embodiments, the chain rake mechanism includes a driving shaft 221, a driven shaft 222, a chain 223 and a rack 224. The two ends of the driving shaft 221 and the driven shaft 222 are respectively penetrated through the two mounting side plates 21, and the driving shaft 221 and the driven shaft 222 are arranged in parallel. The driving shaft 221 and the driven shaft 222 are connected by the chain 223. The rack 224 is arranged on the chain 223. The driving shaft 221 is connected to the driving motor.

[0067] Specifically, the drive motor can control the driving shaft 221 to rotate in two opposite directions (forward or reverse). When rotating forward, the torque input from the driving shaft 221 is transmitted to the chain 223 and the driven shaft 222 in sequence, and the rack 224 rotates with the chain 223, moving the marine organisms along the direction of movement of the chain 223 and pushing them backward into the milling mechanism. When the marine organisms accumulate too much or are mixed with debris, causing the various components of the chain rake mechanism to get stuck, a reversing signal is sent to the drive motor to control the driving shaft 221 to reverse, so that the marine organisms in the chain rake mechanism can be pushed out in the opposite direction, solving the problem of the various components of the chain rake mechanism getting stuck.

[0068] In some embodiments, the chain rake mechanism further includes an induction gear 225 disposed at one end of the driving shaft 221, and a speed sensor 226 fixed to the chassis 1 for sensing the speed of the induction gear 225. The speed sensor 226 is connected to the control center to feedback the output speed at the driving shaft 221, and is used to detect whether the chain rake mechanism rotates normally. Specifically, when the chain rake mechanism components are stuck due to excessive accumulation of marine organisms or mixed with debris, the change in the speed signal received by the speed sensor 226 can be used to know that there is a stuck phenomenon at the chain rake mechanism, so that the drive motor can be controlled to commutate and reverse to solve the stuck problem, or the device can be shut down as a whole and human intervention can be performed on site to solve the stuck problem.

[0069] In some embodiments, the chain rake mechanism further includes a guide block 23 and a pressure block 24. The mounting side plate 21 is provided with a moving groove. The guide block 23 is fixedly connected to the chassis 1 and can be movably inserted into the moving groove. When the guide block 23 moves to a specified position of the moving groove, the pressure block 24 fixes the guide block 23 to the specified position on the moving groove through a fastener. The guide block 23 can be mounted on the housing 7 of the milling mechanism, thereby indirectly mounted on the chassis 1.

[0070] In some embodiments, the chain harrow mechanism further includes a guiding pressing plate 227 and an adjusting setscrew 228. The guiding pressing plate 227 is fixedly connected to the side of the mounting side plate 21 facing away from the chain harrow mechanism. The adjusting setscrew 228 passes through the guiding pressing plate 227 and abuts against the chassis 1. Specifically, the guiding pressing plate 227 is C-shaped and is provided with a hole for the adjusting setscrew 228 to pass through. By screwing the adjusting setscrew 228, its extending amount can be adjusted, thereby adjusting the parallel state of the driving shaft 221 and the driven shaft 222, and adjusting the tension state of the chain harrow mechanism.

[0071] In some embodiments, the bottom of the mounting side plate 21 is provided with a hollow structure, so that the material has no blockage at the bottom and can enter the chain harrow mechanism from the side, thus avoiding the risk of side material blockage and improving the conveying efficiency.

[0072] As Figure 3 shown, in some embodiments, the nuclear power plant tunnel marine organism cleaning device further includes a supporting wheel 6 provided on the wing unit 3. Specifically, the supporting wheel 6 enables the wing unit 3 to roll relative to the arc surface on the inner wall of the tunnel, thereby helping the wing unit 3 to better fit the arc surface on the inner wall of the tunnel and advancing along the extending direction of the tunnel together with the chassis 1.

[0073] As Figure 5 shown, in some embodiments, the nuclear power plant tunnel marine organism cleaning device further includes a knife plate 15 provided on the chassis 1 for scraping the bottom plane of the tunnel, which is used to scrape and clean the marine organisms on the bottom plane of the tunnel. The scraped marine organisms pass through the inclined surface on the knife plate 15 and are then pushed forward together to the conveying unit 2 for centralized collection.

[0074] It can be understood that the above embodiments only represent the preferred embodiments of the present invention, and the description thereof is relatively specific and detailed, but it cannot be construed as a limitation on the scope of the patent of the present invention; it should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present invention; therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention shall fall within the scope covered by the claims of the present invention.

Claims

1. A marine organism cleaning device for a nuclear power plant tunnel, characterized in that, It includes a chassis (1) movable along the extension direction of the submarine water intake tunnel, a conveying unit (2) arranged on the chassis (1) and moving with the chassis (1), and flank units (3) arranged on opposite sides of the conveying unit (2); The flank units (3) are used to gather sea organisms on the arc surface of the inner wall of the submarine water intake tunnel towards the direction close to the conveying unit (2), and the conveying unit (2) is used to centrally convey the sea organisms in the advancing direction of the chassis (1) to the chassis (1); The flank unit (3) includes a flank main frame (31), a screw conveyor assembly (32) and a screw drive hydraulic cylinder (33); one end of the screw drive hydraulic cylinder (33) is hinged to the flank main frame (31), and the other end is hinged to the screw conveyor assembly (32); the screw conveyor assembly (32) is provided with a guide rod (311) parallel to its length direction, and the screw conveyor assembly (32) is sleeved on the guide rod (311) and can move under the drive of the screw drive hydraulic cylinder (33); The screw conveyor assembly (32) includes a screw drive frame (321), a screw tail frame (322), a screw conveyor (323) and a hydraulic motor (324). The screw drive frame (321) and the screw tail frame (322) are sleeved on both ends of the guide rod (311), and the screw drive frame (321) is hinged to the screw drive hydraulic cylinder (33); both the screw drive frame (321) and the screw tail frame (322) are provided with bearing mounting structures, and both ends of the screw conveyor (323) are respectively mounted on the two bearing mounting structures; the hydraulic motor (324) is fixedly connected to the screw drive frame (321) and drives the screw conveyor (323) to rotate forward and backward through a transmission device.

2. The sea creature cleaning device for nuclear power plant tunnels according to claim 1, characterized in that, The two flank units (3) are hinged to the chassis (1); The sea organism cleaning device for the nuclear power plant tunnel further includes two flank drive hydraulic cylinders (5). One end of each flank drive hydraulic cylinder (5) is connected to the chassis (1), and the opposite end is hinged to one flank unit (3). After the flank unit (3) is opened to the working state, the flank drive hydraulic cylinder (5) provides a constant supporting force for the flank unit (3).

3. The nuclear power plant tunnel marine organism cleaning device according to claim 2, wherein, The flank unit (3) is hinged to the chassis (1) through a hinge assembly; The articulated assembly includes a pin shaft (11) disposed on the chassis (1); a sleeve (12) disposed on the flank unit (3) and sleeved on the outer periphery of the pin shaft (11), the sleeve (12) being relatively rotatable with respect to the pin shaft (11) in the circumferential direction, and the sleeve (12) being relatively movable with respect to the pin shaft (11) in the axial direction; an articulated frame (13) disposed on the chassis (1) and connecting one end of the pin shaft (11), a floating gap being formed between the articulated frame (13) and the sleeve (12) for the sleeve (12) and the pin shaft (11) to move relatively in the axial direction; and a pin seat (14) disposed on the flank unit (3) and detachably connected to the relatively other end of the pin shaft (11).

4. The marine organism cleaning device for the nuclear power plant tunnel according to claim 1, characterized in that The nuclear power plant tunnel marine organism cleaning device further includes an auxiliary connection unit (4), and the flank unit (3) is connected to the chassis (1) through the auxiliary connection unit (4) on the side facing away from the screw conveyor assembly (32). The auxiliary connection unit (4) includes a support plate (41), a roller (42), a floating support (43) and a fixed support (44); The support plate (41) is fixedly connected to the flank unit (3), and the support plate (41) is provided with an arc groove (411) whose axis coincides with the rotation axis of the flank unit (3); the roller (42) is disposed in the arc groove (411) and can roll in the arc groove (411), and a first guide shaft is passed through the roller (42); the fixed support (44) is fixedly connected to the chassis (1), and a second guide shaft is passed through the fixed support (44); one end of the floating support (43) is articulated to the first guide shaft, and the other end is articulated to the second guide shaft.

5. The marine organism cleaning device for nuclear power plant tunnels according to claim 1, characterized in that, Each flank unit (3) further includes a plurality of scraping mechanisms (34), and the plurality of scraping mechanisms (34) are arranged in an arc shape at the bottom edge of the flank main frame (31) and are matched with the arc surface on the inner wall of the submarine water intake tunnel; in the working state, each scraping mechanism (34) is always in contact with the arc surface on the inner wall of the submarine water intake tunnel.

6. The marine organism cleaning device for the nuclear power plant tunnel according to claim 5, characterized in that, Each scraping mechanism (34) includes a housing (341) disposed on the flank main frame (31), a telescopic body disposed in the housing (341), and a scraper (342) disposed at the bottom of the telescopic body; The telescopic body includes a guide shaft (344) and a first elastic member (345); one end of the first elastic member (345) abuts against the inner top wall of the housing (341), and the relatively other end abuts against the guide shaft (344); the end of the guide shaft (344) away from the first elastic member (345) is connected to the scraper (342); the scraper (342) can move back and forth along the axial direction of the guide shaft (344) to maintain a state of always being in contact with the arc surface on the inner wall of the submarine water intake tunnel; The shape of the scraper (342) is set corresponding to the arc surface on the inner wall of the submarine water intake tunnel.

7. The marine organism cleaning device for the nuclear power plant tunnel according to claim 6, wherein, One end of the guide shaft (344) comprises a first part and a second part which are axially connected; the diameter of the first part is smaller than the diameter of the second part; a shaft shoulder is defined between the first part and the second part; The other end of the first elastic member (345) abuts against the shaft shoulder.

8. The marine organism cleaning device for nuclear power plant tunnels according to claim 6, wherein, The telescopic body also includes a scraper mounting frame (343); The scraper mounting frame (343) is detachably connected to an end of the guide shaft (344) away from the first elastic member (345), and the scraper (342) is mounted on the scraper mounting frame (343).

9. The marine organism cleaning device for nuclear power plant tunnels according to claim 1, characterized in that, The conveying unit (2) comprises two symmetrically arranged mounting side plates (21) and a chain rake mechanism, the two mounting side plates (21) are connected to the chassis (1), and the chain rake mechanism is arranged between the two mounting side plates (21); In a working state, the spiral conveying assembly (32) conveys the marine organisms located on opposite sides of the chain rake mechanism in a direction close to the chain rake mechanism, and the chain rake mechanism centrally conveys the marine organisms in the forward direction of the chassis (1) to the side opposite to the forward direction of the chassis (1).

10. The marine organism cleaning device for the nuclear power plant tunnel according to claim 9, characterized in that, The chain rake mechanism comprises a driving shaft (221), a driven shaft (222), a chain (223) and a rack (224); The two ends of the driving shaft (221) and the driven shaft (222) are respectively passed through the two mounting side plates (21); the driving shaft (221) and the driven shaft (222) are arranged in parallel; the driving shaft (221) and the driven shaft (222) are connected by transmission via the chain (223); the rack (224) is arranged on the chain (223); and the driving shaft (221) is connected to a driving motor.

11. The nuclear power plant tunnel marine organism cleaning device according to claim 10, wherein The chain rake mechanism further comprises an induction gear (225) arranged at one end of the driving shaft (221), and a rotation speed sensor (226) fixed to the chassis (1) for sensing the rotation speed of the induction gear (225).

12. The sea creature cleaning device for a nuclear power plant tunnel according to claim 10, wherein, The chain rake mechanism further comprises a guide block (23) and a pressure block (24); the mounting side plate (21) is provided with a movable groove; the guide block (23) is fixedly connected to the chassis (1) and can be movably inserted into the movable groove; the pressure block (24) fixes the guide block (23) at a designated position on the movable groove via a fastener.

13. The marine organism cleaning device for nuclear power plant tunnels according to claim 10, characterized in that, The chain rake mechanism further comprises a guide pressure plate (227) and an adjusting top screw (228); the guide pressure plate (227) is fixedly connected to a side of the mounting side plate (21) facing away from the chain rake mechanism; the adjusting top screw (228) passes through the guide pressure plate (227) and abuts against the chassis (1).

14. The nuclear power plant tunnel marine organism cleaning device according to claim 9, characterized in that, The bottom of the mounting side plate (21) is provided with a hollow structure for marine organisms to enter.

15. The nuclear power plant tunnel marine organism cleaning device according to any one of claims 1 to 14, characterized in that, The nuclear power station tunnel marine organism cleaning device further comprises a support wheel (6) arranged on the wing unit (3).

16. The nuclear power plant tunnel marine organism cleaning device according to any one of claims 1 to 14, characterized in that, The nuclear power station tunnel marine organism cleaning device further comprises a knife plate (15) arranged on the chassis (1) and used for scraping the bottom plane of the tunnel.

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