Deep sea sandy soil heavy rake head and production process thereof

Abstract

The invention discloses a deep sea sandy soil heavy rake head and a production process thereof, and relates to the technical field of rake heads. A deep sea sandy soil heavy rake head comprises a fixed body, a movable cover, a hydraulic cylinder, a rotating shaft, a high-pressure flushing nozzle, a wear-resistant baffle, rake teeth, a water diversion window assembly, a manual butterfly valve, a buoy box, a high-pressure flushing pipe assembly, a movable tooth bed, a sealing strip and an oil cylinder gland. The movable cover and the fixed body are connected through a precisely-machined rotating shaft, the coaxiality of shaft holes between the movable cover and the fixed body is ensured, the rotating clamping stagnation phenomenon is effectively reduced, the rake teeth are made of high-strength wear-resistant alloy materials, the wear resistance and durability of the rake teeth are enhanced, the water diversion window assembly can guide water flow and assist the rake teeth in excavating, and the water diversion window assembly is convenient to use. The excavating efficiency is further improved, sand loosening is facilitated through the action of water flow, the friction force between the rake teeth and the sand is reduced, and the excavating process is smoother.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of harrow head, in particular to a heavy harrow head for deep sea sand and a production process thereof. BACKGROUND

[0002] In the marine engineering and port construction, the drag suction dredger is widely used in the excavation and transportation of seabed sand, silt and other sediments as an important dredging equipment, and the harrow head as a key component of the drag suction dredger directly affects the dredging efficiency and operation quality.

[0003] The traditional harrow head is prone to clogging and wear of the harrow teeth when excavating deep sea sand due to the large particle size and strong viscosity of the sand, which affects the excavation efficiency, and the coaxiality deviation of the shaft hole of the movable cover and the fixed body is too large, which causes rotation jamming, affects the soil breaking efficiency of the harrow head, increases the power consumption during the operation of the harrow head, and the movable cover frequently appears jamming phenomenon, therefore, we propose a heavy harrow head for deep sea sand and a production process thereof. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the prior art, and provides a heavy harrow head for deep sea sand and a production process thereof, which can solve the problems of the traditional harrow head in excavating deep sea sand, such as the large particle size and strong viscosity of the sand, which easily leads to clogging and wear of the harrow teeth, affects the excavation efficiency, and the coaxiality deviation of the shaft hole of the movable cover and the fixed body is too large, which causes rotation jamming, affects the soil breaking efficiency of the harrow head, increases the power consumption during the operation of the harrow head, and the movable cover frequently appears jamming phenomenon.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a heavy harrow head for deep sea sand, comprising:

[0006] a fixed body, a movable cover, a hydraulic cylinder, a rotating shaft, a high-pressure water flushing nozzle, a wear-resistant baffle, a harrow tooth, a water guide window assembly, a manual butterfly valve, a float box, a high-pressure water flushing pipe assembly, a movable tooth bed, a sealing strip and a cylinder gland;

[0007] The movable cover is connected with the fixed body through the rotating shaft and can rotate around the rotating shaft, the hydraulic cylinder is connected with the fixed body and the movable cover and is used for controlling the opening and closing of the movable cover, the high-pressure water flushing nozzle is installed on the fixed body and is used for high-pressure water flushing to assist excavation, the wear-resistant baffle is arranged at the front end of the harrow tooth and is used for protecting the harrow tooth body from being directly impacted by sand, and the harrow tooth is fixed on the movable tooth bed and is used for excavating sand.

[0008] Preferably, the water guide window assembly is arranged above the harrow tooth and is used for guiding water flow, and the high-pressure water flushing pipe assembly is connected with the high-pressure water flushing nozzle and provides high-pressure water flow.

[0009] Preferably, the sealing strip is arranged between the movable cover and the fixed body.

[0010] Preferably, the oil cylinder gland is used to fix and seal the end of the hydraulic cylinder.

[0011] Preferably, the high-pressure flushing pipe assembly comprises a high-pressure flushing hose for delivering high-pressure water flow to the high-pressure flushing nozzle.

[0012] Preferably, the tines are made of high-strength wear-resistant alloy material with a surface hardness of ≥HRC55 and are positioned and installed through an L-shaped template.

[0013] A production process of a deep-sea heavy-duty sand rake head comprises the following steps:

[0014] S1: The fixed body is fixed firmly with support, the internal height and width of the fixed body are checked, the height and width of the movable cover are checked, the surface unevenness of the fixed body and the movable cover is checked, the gap on both sides is ensured to be uniform, the movable cover is hoisted and installed on the fixed body by a crane, the gap around is observed, the movable cover and the shaft hole are adjusted to the best position, and then the shaft is installed;

[0015] S2: After the connection between the movable cover and the fixed body is completed, rotation test is started, and after passing the test, the lip-shaped sealing strip and the pressing strip are installed, and the pressing strip is fixed by bolts;

[0016] S3: The high-pressure flushing hose is installed according to the size required by the drawing, one end of the high-pressure flushing hose is connected with a valve, the other end is connected with the movable cover and the movable cover water tank, gaskets are placed between the flanges, and the gaskets are fastened by bolts;

[0017] S4: The hose bending test is performed, the movable cover is turned over to observe the bending deformation of the rubber pipe, whether there is concave, damage or not is checked, and the checking result is recorded;

[0018] S5: The installation of the fixed body, the movable cover and the hydraulic cylinder, the hydraulic cylinder is installed according to the size of the drawing, the fixed body and the hydraulic cylinder seat are assembled and welded with the support, the movable cover and the hydraulic cylinder seat are assembled and welded according to the actual size of the hydraulic cylinder, after the two sets of oil cylinder seats are adjusted, the movable cover and the oil cylinder seat are finally welded, and the welding deformation of the oil cylinder seat is controlled;

[0019] S6: The installation of the water inlet window hydraulic cylinder, the water inlet window cover plate is fixed on the movable cover according to the size of the drawing, the hydraulic cylinder is installed, the movable cover, the oil cylinder seat and the hydraulic cylinder are connected and the oil cylinder seat is welded, after the opening position of the water inlet window and the installation position of the hydraulic cylinder are adjusted, the oil cylinder seat and the connecting lug plate on the water inlet window are welded and fixed by the shaft, and a hole is opened on the movable cover at the position of the cover plate;

[0020] S7: The water baffle, the movable tooth bed, the tine, the fixed movable tooth bed 13 and other parts are installed in sequence according to the drawing.

[0021] S8: After the hydraulic cylinder driving test is passed, the fixed hydraulic cylinder, the shaft and the wear-resistant baffle are installed in sequence.

[0022] Compared with the prior art, the present application has the following advantages:

[0023] 1、The deep-sea sand heavy harrow head, the movable cover and the fixed body are connected through the precisely processed rotating shaft, which ensures the coaxiality of the shaft hole between the two, effectively reduces the rotation jamming phenomenon, and the harrow teeth are made of high-strength wear-resistant alloy material, which enhances the wear resistance and durability of the harrow teeth, and the setting of the water guide window assembly can guide the water flow to assist the harrow teeth in digging, further improving the digging efficiency, and the action of the water flow helps to loosen the sand, reduces the friction between the harrow teeth and the sand, and makes the digging process more smooth.

[0024] 2、The deep-sea sand heavy harrow head, the wear-resistant baffle effectively protects the harrow tooth body from direct impact of the sand, prolongs the service life of the harrow tooth, at the same time, the cooperation of the high-pressure water flushing nozzle and the high-pressure water flushing pipe assembly also reduces the equipment failure caused by sand blockage, the setting of the sealing strip effectively prevents the sand and water from entering the inside of the harrow head, protects the internal mechanism from corrosion and wear, improves the overall durability and reliability of the harrow head. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present application will be further described below in conjunction with the drawings and examples:

[0026] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0027] Figure 2 is a schematic diagram of the high-pressure water flushing pipe assembly structure of the present application;

[0028] Figure 3 is a schematic diagram of the harrow tooth structure of the present application;

[0029] Figure 4 is a schematic diagram of the oil cylinder gland structure of the present application.

[0030] Figure legend: 1, fixed body; 2, movable cover; 3, hydraulic cylinder; 4, high-pressure water flushing hose; 5, rotating shaft; 6, high-pressure water flushing nozzle; 7, wear-resistant baffle; 8, harrow tooth; 9, water guide window assembly; 10, manual butterfly valve; 11, float box; 12, high-pressure water flushing pipe assembly; 13, movable tooth bed; 14, sealing strip; 15, oil cylinder gland. DETAILED DESCRIPTION

[0031] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with figures, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0032] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0033] In the description of the present application, greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0034] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting and the like should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0035] Please refer to Figures 1-4 The present application provides a technical solution: a heavy-duty harrow head for deep-sea sand, comprising:

[0036] The fixed body 1, the movable cover 2, the hydraulic cylinder 3, the rotating shaft 5, the high-pressure water jet nozzle 6, the wear-resistant baffle 7, the harrow tooth 8, the water guide window assembly 9, the manual butterfly valve 10, the float box 11, the high-pressure water jet pipe assembly 12, the movable tooth bed 13, the sealing strip 14 and the oil cylinder gland 15 are provided.

[0037] The movable cover 2 is connected with the fixed body 1 through the rotating shaft 5 and can rotate around the rotating shaft 5. The hydraulic cylinder 3 connects the fixed body 1 and the movable cover 2 and is used for controlling the opening and closing of the movable cover 2. The high-pressure water jet nozzle 6 is installed on the fixed body 1 and is used for high-pressure water jet assisted excavation. The wear-resistant baffle 7 is arranged at the front end of the harrow tooth 8 and is used for protecting the harrow tooth 8 body from direct impact of sand. The harrow tooth 8 is fixed on the movable tooth bed 13 and is used for excavating sand.

[0038] The water guide window assembly 9 is arranged above the harrow tooth 8 and is used for guiding water flow. The high-pressure water jet pipe assembly 12 connects the high-pressure water jet nozzle 6 and provides high-pressure water flow. The sealing strip 14 is arranged between the movable cover 2 and the fixed body 1. The oil cylinder gland 15 is used for fixing and sealing the end of the hydraulic cylinder 3. The high-pressure water jet pipe assembly 12 comprises a high-pressure water jet hose 4, which is used for conveying high-pressure water flow to the high-pressure water jet nozzle 6.

[0039] The harrow tooth 8 is made of high-strength wear-resistant alloy material, and the surface hardness is ≥HRC55. It is positioned and installed through an L-shaped template.

[0040] A production process of a heavy-duty harrow head for deep-sea sand, comprising:

[0041] The fixed body 1 is fixedly supported, the internal height and width of the fixed body 1 are checked, the height and width of the movable cover 2 are checked, the surface unevenness of the fixed body 1 and the movable cover 2 is checked, the uniformity of the gaps on both sides is ensured, the movable cover 2 is hoisted and fixed like the fixed body 1 by using a crane, the gaps around are observed, the movable cover 2 is adjusted to the best position and then is loaded into the rotating shaft 5, after the movable cover 2 is connected with the fixed body 1, a rotating test is started, and after the rotating test is qualified, the lip-shaped sealing strip 14 and the pressing strip are installed, and the pressing strip is fixed by using bolts.

[0042] The high-pressure flushing hose 4 is installed according to the size required by the drawing, one end of the high-pressure flushing hose 4 is connected with a valve, the other end is connected with the movable cover 2 and the water tank of the movable cover 2, gaskets are arranged between the flanges, and the gaskets are fastened by using bolts, a hose bending test is conducted, the movable cover 2 is turned over, the bending deformation of the rubber pipe is observed, whether there is a concave, damage or not is checked, and the checking result is recorded in a book, the fixed body 1, the movable cover 2 and the hydraulic cylinder 3 are installed, the hydraulic cylinder 3 is installed according to the size of the drawing, the fixed body 1 and the hydraulic cylinder 3 seat are assembled and welded with the support, the movable cover 2 and the hydraulic cylinder seat are assembled according to the actual size of the hydraulic cylinder 3, after the two sets of hydraulic cylinder seats are adjusted, the movable cover 2 and the hydraulic cylinder seat are finally welded, and it is noted that the welding deformation of the hydraulic cylinder seat is controlled.

[0043] The installation of the water inlet window hydraulic cylinder 3, the drinking water window cover plate is fixed on the movable cover 2 according to the size of the drawing, the hydraulic cylinder 3 is installed, the movable cover 2, the hydraulic cylinder seat and the hydraulic cylinder 3 are connected and the hydraulic cylinder seat is welded, after the opening position of the water inlet window and the installation position of the hydraulic cylinder 3 are adjusted, the hydraulic cylinder seat on the water inlet window and the connecting lug plate are welded and fixed by using the rotating shaft 5, at the same time, the hole is opened on the movable cover 2 at the position of the cover plate, the water baffle, the movable tooth bed 13, the rake tooth 8, the fixed movable tooth bed 13 and other parts are installed in sequence according to the drawing, after the driving test of the hydraulic cylinder 3 is qualified, the hydraulic cylinder 3, the rotating shaft 5 and the wear-resistant baffle 7 are installed in sequence.

[0044] Further, in use, the movable cover 2 is connected with the fixed body 1 through the rotating shaft 5, forming a movable digging unit. The hydraulic cylinder 3 serves as a power source, connecting the fixed body 1 and the movable cover 2, and through the control of the hydraulic system, the opening and closing action of the movable cover 2 is realized. This design enables the rake head to adjust its opening size according to the digging requirements, to adapt to different particle sizes and cohesive sandy soil. The high-pressure flushing nozzle 6 is installed on the fixed body 1, and the high-pressure water flow provided by the high-pressure flushing pipe assembly 12 is used to flush the digging area. The high-pressure water flow can effectively loosen the sandy soil, reduce the friction between the rake tooth 8 and the sandy soil, and improve the digging efficiency. At the same time, the flushing action can also help to remove the adhering objects on the rake tooth 8, preventing clogging.

[0045] The rake tooth 8 is made of high-strength wear-resistant alloy material, with surface hardness ≥HRC55, ensuring excellent wear resistance in harsh deep-sea sand environment. The rake tooth 8 is fixed on the movable tooth bed 13 and positioned and installed through L-shaped template, ensuring installation accuracy and stability. The design of the movable tooth bed 13 allows the angle and position of the rake tooth 8 to be adjusted as needed to adapt to different digging conditions.

[0046] The water guide window assembly 9 is arranged above the rake tooth 8 to guide the water flow, ensuring that the high-pressure water flow can accurately act on the digging area. The sealing strip 14 is arranged between the movable cover 2 and the fixed body 1 to prevent sand and water from entering the inside of the rake head, protecting the internal mechanism from corrosion and wear. The float box 11 provides an indication of the position of the rake head underwater, helping the operator accurately grasp the working state of the rake head. The oil cylinder gland 15 is used to fix and seal the end of the hydraulic cylinder 3, ensuring stable operation of the hydraulic system.

[0047] The movable cover 2 and the fixed body 1 are connected by a precisely machined rotating shaft 5, ensuring the coaxiality of the shaft hole between them, effectively reducing the rotation jamming phenomenon. The rake tooth 8 is made of high-strength wear-resistant alloy material, enhancing the wear resistance and durability of the rake tooth. The arrangement of the water guide window assembly 9 can guide the water flow to assist the rake tooth 8 in digging, further improving the digging efficiency. The action of the water flow helps to loosen the sand, reducing the friction between the rake tooth and the sand, making the digging process smoother.

[0048] The wear-resistant baffle 7 effectively protects the main body of the rake tooth 8 from direct impact of sand, prolonging the service life of the rake tooth. At the same time, the combination of the high-pressure water jet nozzle 6 and the high-pressure water jet pipe assembly 12 also reduces equipment failures caused by sand blockage. The sealing strip 14 effectively prevents sand and water from entering the inside of the rake head, protecting the internal mechanism from corrosion and wear, and improving the overall durability and reliability of the rake head.

[0049] Structure Description: Fixed Body 1: As the basic structure of the rake head, it provides a platform to support and fix other components, ensuring the stability and rigidity of the entire rake head;

[0050] Movable Cover 2: Connected with the fixed body 1 through the rotating shaft 5, it can rotate around the rotating shaft 5 and realize opening and closing action through the control of the hydraulic cylinder 3, to adapt to different digging needs;

[0051] Hydraulic Cylinder 3: As the power source, it connects the fixed body 1 and the movable cover 2, and realizes the opening and closing of the movable cover 2 through the control of the hydraulic system, thereby adjusting the size of the rake head's digging opening;

[0052] Rotating Shaft 5: Connecting the fixed body 1 and the movable cover 2, it allows the movable cover 2 to rotate around it, and is a key component for realizing the opening and closing action of the movable cover 2;

[0053] High-pressure water jet 6: installed on the fixed body 1, through the high-pressure water jet pipe assembly 12 to provide high-pressure water flow, to flush the digging area, loosen the sand, reduce the friction between the rake teeth 8 and the sand, improve the digging efficiency;

[0054] Wear-resistant baffle 7: set at the front end of the rake teeth 8, used to protect the rake teeth 8 body from direct impact of sand, prolong the service life of the rake teeth 8;

[0055] Rake teeth 8: fixed on the movable tooth bed 13, used for digging sand, made of high-strength wear-resistant alloy material, surface hardness ≥HRC55, to ensure excellent wear resistance in harsh deep-sea sand environment;

[0056] Water guide window assembly 9: set above the rake teeth 8, used to guide the water flow, ensure that the high-pressure water flow can accurately act on the digging area, improve the flushing effect;

[0057] Manual butterfly valve 10: although the original text does not directly explain its function, it is usually used to control the on-off of fluid, which may be used to control the opening and closing of the high-pressure water flushing system in this rake head;

[0058] Buoy box 11: provides the position indication of the rake head under water, helps the operator to accurately master the working state of the rake head, ensures the safety and efficiency of the digging operation;

[0059] High-pressure water jet pipe assembly 12: connected to the high-pressure water jet 6, provides high-pressure water flow, is the key component of the high-pressure water flushing system;

[0060] Movable tooth bed 13: used to fix the rake teeth 8, its design allows the angle and position of the rake teeth 8 to be adjusted according to the needs to adapt to different digging conditions;

[0061] Sealing strip 14: set between the movable cover 2 and the fixed body 1, prevents sand and water from entering the inside of the rake head, protects the internal mechanism from corrosion and wear;

[0062] Oil cylinder gland 15: used to fix and seal the end of the hydraulic cylinder 3, ensures the stable operation of the hydraulic system, prevents hydraulic oil leakage.

[0063] The above embodiments of the present application are described in detail in combination with the drawings, but the present application is not limited to the above embodiments, within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present application.

Claims

1. A deep sea sand heavy duty harrow head characterized by, Comprise: Fixed body (1), movable cover (2), hydraulic cylinder (3), rotating shaft (5), high-pressure water jet nozzle (6), wear-resistant baffle (7), rake teeth (8), water guide window assembly (9), manual butterfly valve (10), float box (11), high-pressure water pipe assembly (12), movable tooth bed (13), sealing strip (14) and oil cylinder gland (15); Movable cover (2) is connected with fixed body (1) through rotating shaft (5), can rotate around rotating shaft (5), hydraulic cylinder (3) connects fixed body (1) and movable cover (2), is used for controlling opening and closing of movable cover (2); Wherein, high-pressure water jet nozzle (6) is installed on fixed body (1), is used for high-pressure water jet auxiliary excavation, wear-resistant baffle (7) is arranged at the front end of rake teeth (8), is used for protecting rake teeth (8) main body from direct impact of sandy soil, rake teeth (8) is fixed on movable tooth bed (13), is used for excavating sandy soil.

2. The heavy-duty deep-sea soil harrow head according to claim 1, characterized in that: The water guide window assembly (9) is arranged above the rake teeth (8), which is used for guiding water flow, and the high-pressure water pipe assembly (12) is connected with the high-pressure water jet nozzle (6) to provide high-pressure water flow.

3. The heavy-duty deep-sea soil harrow head according to claim 1, characterized in that: The sealing strip (14) is arranged between the movable cover (2) and the fixed body (1).

4. The heavy-duty deep-sea soil harrow head according to claim 1, characterized in that: The oil cylinder gland (15) is used for fixing and sealing the end of the hydraulic cylinder (3).

5. The heavy-duty deep-sea soil harrow head according to claim 1, characterized in that: The high-pressure water pipe assembly (12) comprises a high-pressure water hose (4), and the high-pressure water hose (4) is used for conveying high-pressure water flow to the high-pressure water jet nozzle (6).

6. The heavy-duty deep-sea soil harrow head according to claim 1, characterized in that: The rake teeth (8) are made of high-strength wear-resistant alloy material, and the surface hardness is greater than or equal to HRC55, and are positioned and installed through an L-shaped template.

7. A process for producing a heavy-duty deep-sea sand soil harrow head, characterized by, Comprise: S1: the fixed body (1) is firmly supported and fixed, the height and width of the fixed body (1) are checked, the height and width of the movable cover (2) are checked, and the surface unevenness of the fixed body (1) and the movable cover (2) is checked, so that the gaps on both sides are uniform and consistent, the movable cover (2) is hoisted and fixed on the fixed body (1) by using a crane, the peripheral gap is observed, and the movable cover (2) and the shaft hole are adjusted to the best position and then are installed in the rotating shaft (5); S2: after the movable cover (2) and the fixed body (1) are connected, the rotating test is started, and after passing the test, the lip-shaped sealing strip (14) and the pressing strip are installed, and the pressing strip is fixed by using bolts; S3: according to the size required by the drawing, the high-pressure water hose (4) is installed, one end of the high-pressure water hose (4) is connected with a valve, the other end is connected with the movable cover (2) and the water tank of the movable cover (2), gaskets are arranged between the flanges, and the flanges are fastened by using bolts; S4: the hose bending test is carried out, the movable cover (2) is turned over, the bending deformation of the rubber pipe is observed, whether there is a concave, damage or not is checked, and the checking result is recorded; S5: the fixed body (1), the movable cover (2) and the hydraulic cylinder (3) are installed, the hydraulic cylinder (3) is installed according to the size of the drawing, the fixed body (1) and the hydraulic cylinder seat are assembled and welded with the support, the movable cover (2) and the hydraulic cylinder seat are assembled according to the actual size of the hydraulic cylinder (3), after the two sets of hydraulic cylinder seats are adjusted, the movable cover (2) and the hydraulic cylinder seat are finally welded, and attention is paid to controlling the welding deformation of the hydraulic cylinder seat; S6: installation of the water inlet window hydraulic cylinder (3), fix the water inlet window cover plate on the movable cover (2) according to the drawing size, install the hydraulic cylinder (3), connect and weld the movable cover (2), the cylinder seat and the hydraulic cylinder (3), after adjusting the water inlet window opening position and the hydraulic cylinder (3) installation position, weld the cylinder seat on the water inlet window and the connecting lug plate and fix them with the rotating shaft (5), and at the same time, open a hole on the movable cover (2) at the position where the cover plate is installed; S7: install the water baffle, movable tooth bed (13), rake tooth (8), fixed movable tooth bed 13 and other parts in sequence according to the drawing; S8: after the hydraulic cylinder (3) driving test is qualified, install the fixed hydraulic cylinder (3), rotating shaft (5) and wear-resistant baffle (7) in sequence.

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