CN111395433B - Novel high-efficient harrow head of integral type - Google Patents
Novel high-efficient harrow head of integral type Download PDFInfo
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- CN111395433B CN111395433B CN202010314185.9A CN202010314185A CN111395433B CN 111395433 B CN111395433 B CN 111395433B CN 202010314185 A CN202010314185 A CN 202010314185A CN 111395433 B CN111395433 B CN 111395433B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
- E02F5/285—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways with drag buckets or scraper plates
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/905—Manipulating or supporting suction pipes or ladders; Mechanical supports or floaters therefor; pipe joints for suction pipes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/907—Measuring or control devices, e.g. control units, detection means or sensors
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
- E02F3/9256—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head
- E02F3/9268—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head with rotating cutting elements
- E02F3/9281—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head with rotating cutting elements with axis of rotation in horizontal and transverse direction of the suction pipe
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
- E02F3/9293—Component parts of suction heads, e.g. edges, strainers for preventing the entry of stones or the like
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
- E02F5/287—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways with jet nozzles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a novel integrated efficient drag head. The novel integrated efficient drag head can realize independent drive control of the size of a drag head suction port, the excavating depth and the cutting angle of the trailing suction hopper dredger, so that the excavating efficiency of the trailing suction hopper dredger is improved. Including suction inlet size functional module, excavation depth functional module, cutting angle functional module, three functional module all with fixed frame, activity frame body and rotation shaft hole connection, every functional module all has independent power drive, ensures that each functional module can independent action.
Description
Technical Field
The invention relates to a drag head for improving the excavating efficiency of a trailing suction hopper dredger through independent driving control of each function in the construction operation process of dredging engineering and ocean engineering, in particular to a drag head suction port, excavating depth and cutting angle of the trailing suction hopper dredger, which are respectively and independently controlled by the independent driving control of the functions.
Background
With the development of economic and social life, the demand for exploring and utilizing ocean and ocean resources by human beings is increasing day by day, and the demand promotes the rapid development of various fields of dredging engineering and ocean engineering. The function of the drag head can be summarized as that the drag teeth are adopted to destroy the soil body structure to realize the excavation of underwater silt and other substances, and the excavated silt and water entering the drag head are mixed into slurry and then are conveyed to a preset position in a fluid conveying mode.
During operation, the rake teeth at the bottom of the rake head are inserted into soil by means of the gravity of the rake head and the pressure exerted by the rake suction pipe, and the rake head is dragged by the rake suction pipe to drive the rake teeth to cut and strip the soil in the front of the rake teeth in the navigation process of the rake suction ship. The rake teeth are used as the construction parts of the rake head, and the cutting angle, depth and other operation states of the rake teeth have decisive influence on the construction efficiency of the rake head.
The working principle of the existing drag head is closely related to the structure of the existing drag head, as shown in figure 1, the existing drag head mainly comprises a fixed frame 1 and a movable cover 6, wherein the fixed frame 1 is of a steel plate electric welding structure, one end of the fixed frame is a round pipe and is provided with a flange for being connected with a drag suction pipe 7, and the other end of the fixed frame is a rectangle with a shaft hole and is hinged with the movable cover 6 by a short shaft; the movable cover 6 is of a steel plate welding shell structure, is hinged with the fixed frame 1 through a short shaft, can swing by 50 degrees, is internally welded with an ultra-thick steel plate serving as a cross beam 61 and used as a mounting seat of the rake teeth 36, and the mounted rake teeth 36 realize cutting and excavating on a dredging layer. When the maximum digging depth is reached, the rake suction pipe 7 and the seabed plane form an angle of 45 degrees, the active rake head can adjust the angle of the movable cover 6 through the control of the adjusting oil cylinder 2, so that the operation state of the rake teeth which are synchronously changed along with the movable cover 6 during digging construction is controlled, and a suction port for adjusting the circulation of water in the rake head is formed in a gap between the movable cover 6 and a soil layer.
From the construction action of the rake teeth and the attitude of the rake teeth relative to the ground, the rake teeth need to have independent angle adjustment and rake tooth cutting depth adjustment functions respectively. However, according to the above-mentioned conventional drag head structure, the drag tooth 36 is welded to the movable cover 6 of the drag head, which causes the digging posture of the drag tooth 36 with respect to the ground to be changed together with the movable cover, and also adjusts the suction port between the movable cover 6 of the drag head and the soil layer to be dug, so that it is impossible to independently adjust the suction port, the digging depth and the cutting angle. That is, the suction port size, the digging depth and the cutting angle of the existing drag head are coupled or partially coupled together, and the space for adjusting the movable cover 6 and the fixed drag teeth according to the actual construction environment is very limited, so that the drag suction construction state with the best efficiency cannot be realized.
Therefore, a drag head for improving the excavating efficiency of the trailing suction hopper dredger through independent driving control of each function is needed to be designed so as to solve the problem of how to improve the excavating efficiency when the trailing suction hopper dredger excavates soil underwater.
Disclosure of Invention
The invention aims to provide a novel integrated efficient drag head, which can realize independent driving control of the size of a drag head suction port, the excavating depth and the cutting angle of a trailing suction hopper dredger, so that the excavating efficiency of the trailing suction hopper dredger is improved.
The purpose of the invention is realized by the following technical scheme:
in order to improve the operating efficiency of the dredging operation of the drag head, the drag head needs to have the function of adjusting and influencing the excavating performance, wherein the suction port of the drag head influences the internal flow field of the drag head and influences the fluid excavating effect, the excavating depth of the drag teeth influences the unit time operating efficiency of the trailing suction dredger, and the excavating angle of the drag teeth influences the excavating resistance of the drag teeth, the invention provides the idea that the three factors influencing the excavating efficiency are independently controlled in the design of the digging operation of the drag head, and provides the idea that a novel integrated efficient drag head is developed from the three aspects, namely, the drag head for improving the excavating efficiency of the trailing suction dredger is independently driven and controlled through each function: the control module for realizing the size of the independent suction port, the control module for the independent digging depth and the control module for the independent cutting angle.
A novel high-efficient rake head of integral type for be connected with the harrow straw, include: the rake teeth rotating square beam is arranged on the movable body frame, and the rake teeth are arranged on the rake teeth rotating square beam.
The movable body frame is driven by the cutting-depth adjusting oil cylinder, one end of the cutting-depth adjusting oil cylinder is connected to the fixed frame through the cutting-depth fixed body oil cylinder seat, and the other end of the cutting-depth adjusting oil cylinder is connected to the movable body frame through the cutting-depth movable body oil cylinder seat.
The air guide sleeve is driven by the air guide sleeve adjusting oil cylinder, one end of the air guide sleeve adjusting oil cylinder is connected to the movable body frame through the movable body oil cylinder base, and the other end of the air guide sleeve adjusting oil cylinder is connected to the air guide sleeve through the air guide sleeve oil cylinder base.
Wherein, the rake teeth rotating square beam is installed on the movable frame body through an angle modulation rotating shaft, so that the rake teeth rotating square beam can rotate around the angle modulation rotating shaft under the driving of an angle modulation driving part, and the angle modulation driving part comprises: the angle adjusting worm is arranged at the end part of the rake tooth rotating square beam, the movable rack body comprises a structural frame, the angle adjusting worm and the hydraulic motor are arranged on the structural frame, the angle adjusting worm is driven by the hydraulic motor, and the angle adjusting worm is meshed with the angle adjusting worm.
The two sides of the structure frame and the two sides of the air guide sleeve are respectively assembled with the fixed rack through rotating shaft holes.
Preferably, a set of the angle modulation driving parts is symmetrically arranged at each of two ends of the rake teeth rotating square beam, and each angle modulation driving part comprises: the angle modulation worm, the hydraulic motor and the angle modulation turbine are the same in size and model, and are controlled in the same module command, so that the two sets of angle modulation driving parts synchronously act.
The novel integrated efficient drag head provided by the invention can form an independently regulated drag head suction port size control function module, an excavation depth regulation function module and a cutting angle regulation function module due to the adoption of the technical scheme.
Suction inlet size control function module will influence the condition in the inside flow field of drag head, influences the carrying capacity of the inside fluid of drag head to excavating silt etc. and the inside flow field of drag head has excavating capacity simultaneously to silt, through the regulatory action of suction inlet, can optimize the hydraulic excavation effect of suction inlet department simultaneously. When the kuppe is adjusted the oil cylinder and is extended, by distance between kuppe and the activity body frame that kuppe adjusting oil cylinder connects increases, and the activity frame body plays the frame effect at this in-process, consequently only the kuppe is in wind under the impetus of kuppe adjusting oil cylinder rotate the shaft hole rotates, has accomplished the regulation to the clearance between kuppe and the excavation soil layer and the condition of compressing tightly from this. Compared with the existing drag head, the drag head is added with a flow field adjusting function, so that the effect of the drag suction dredger on negative pressure generated inside the drag head is converted into the effect of dredging and carrying bottom sediment by fluid, the independently driven flow guide cover is added to realize the control on the gap and the compression condition between the drag head and the excavated ground, and finally the condition of the flow field inside the drag head is adjusted through the adjusting effect of the flow guide cover.
The excavation depth adjusting function module is used for adjusting the excavation depth of an excavated soil layer, when the depth cutting adjusting oil cylinder extends, the distance between the fixed frame and the movable frame which are connected by the depth cutting adjusting oil cylinder is increased, and the fixed frame plays a role of a frame in the process, so that only the movable frame body rotates around the rotating shaft hole under the pushing action of the depth cutting adjusting oil cylinder, and the rake teeth are installed on the movable frame body, so the rake teeth move along with the movable frame body under the action of the depth cutting adjusting oil cylinder, and the function of adjusting the depth of cut between the rake teeth and the excavated soil layer is completed. Digging depth is closely related with operating efficiency, and traditional harrow head can not the independent control digging depth, and novel harrow head digging depth function independently comes out, can realize independent control to realize that trailing suction hopper dredger deepens or reduces the regulation to digging depth according to the operating mode at the operation in-process, in order to improve digging efficiency. The excavation depth adjustment function will affect the drag head excavation efficiency.
The cutting angle adjusting function module is used for adjusting cutting resistance of the rake teeth in the excavating process, and the rake teeth are installed on the rake teeth rotating square beam, and meanwhile, angle adjusting turbines are installed at two ends of the rake teeth rotating square beam and are matched with the angle adjusting worm to rotate under the driving of a hydraulic motor, so that the rake teeth rotate along with the rake teeth rotating square beam, the cutting angle between the rake teeth and an excavated soil layer is changed, and the rake teeth cutting angle adjusting function is realized. The cutting resistance is closely related to the power consumption of the trailing suction hopper dredger, the cutting power consumption always exists in the excavating operation process of the trailing suction hopper dredger, the effect of reducing the cutting resistance on reducing the power consumption of the trailing suction hopper dredger is obvious, and the novel rake head provides the function of reducing the power consumption for the excavating operation in the actual excavating operation process through independently controlling the cutting angle of the rake teeth, so that the excavating efficiency is improved.
The suction port size control is to control the silt carrying capacity and the silt excavating capacity of fluid entering the rake head by adjusting the size of a gap between the rake head and the cutting layer, the excavating depth control is to adjust and control the cutting amount of silt excavated by the rake head by changing the cutting depth of the rake teeth, and the cutting angle control is to adjust the excavating stress, efficiency and other states of the rake teeth by changing the cutting angle between the rake teeth and the excavated silt soil layer.
The invention solves the influence factors influencing the digging efficiency of the drag head in the digging process, and the drag head has three independent adjusting functions: suction port size adjusting function, excavation depth adjusting function and cutting angle adjusting function. The novel drag head structure provided by the invention has the functional characteristics that three main body functions of a suction port gap, a drag tooth excavating depth and a drag tooth cutting-in angle are separated, so that the three main body functions can be independently controlled, which is an important part for realizing high-efficiency dredging operation. Although the three functions are not completely unaffected, after independent adjustment, the overall working state is in a state closest to the state completely meeting the requirements, and only further fine adjustment is needed. For example, when the cutting depth is adjusted, the change in the depth of the rake teeth causes a corresponding change in the size of the suction port and the digging angle, and further adjustment can be made if the size of the suction port and the cutting angle are not as large as desired.
Drawings
Fig. 1 is a schematic view of the overall structure of a drag head in the prior art.
Fig. 2 is a schematic structural diagram of a preferred embodiment of the novel integrated efficient drag head of the present invention.
Fig. 3 is a schematic view of a movable frame body according to an embodiment of the present invention.
Fig. 4 is a schematic view of a main direction of the air guide sleeve and the movable frame body according to the embodiment of the present invention.
Fig. 5 is a schematic side view of the pod and the movable frame body axis according to the embodiment of the present invention.
Wherein: 1-fixing a frame; 11-cutting deep the fixed body oil cylinder seat; 2-cutting depth adjusting oil cylinder; 3-movable frame body; 31-structural frame; 32-angle adjusting worm; 33-a hydraulic motor; 34-an angle modulation turbine; 35-rake teeth rotating square beam; 36-rake teeth; 37-cutting deep the movable oil cylinder base; 38-moving body cylinder block; 39-angle modulation rotating shaft; 4-a dome adjusting cylinder; 5-a flow guide cover; 51-dome cylinder block; 52-rotating shaft hole; 6-a movable cover; 7-raking the suction pipe.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, which are not intended to limit the present invention, and all similar structures and similar variations using the present invention shall fall within the scope of the present invention.
As shown in the figure, the novel integrated efficient rake head is characterized in that the movable body frame 3 is driven by the depth cutting adjusting oil cylinder 2, one end of the depth cutting adjusting oil cylinder 2 is connected to the fixed frame 1 through the depth cutting fixed body oil cylinder seat 11, and the other end of the depth cutting adjusting oil cylinder is connected to the movable body frame 3 through the depth cutting movable body oil cylinder seat 37. The air guide sleeve 5 is driven by the air guide sleeve adjusting oil cylinder 4, one end of the air guide sleeve adjusting oil cylinder 4 is connected to the movable body frame 3 through the movable body oil cylinder seat 38, and the other end of the air guide sleeve adjusting oil cylinder is connected to the air guide sleeve 5 through the air guide sleeve oil cylinder seat 51. The rake teeth rotating square beam 35 is mounted on the movable frame body 3 through the angle adjusting rotating shaft 39, so that the rake teeth rotating square beam 35 can rotate around the angle adjusting rotating shaft 39 under the driving of the angle adjusting driving part. The recliner driving member includes: the angle adjusting worm 32, the hydraulic motor 33 and the angle adjusting worm wheel 34 are arranged on two ends of the rake tooth rotating square beam 35, the movable rack body 3 comprises a structure frame 31, the angle adjusting worm 32 and the hydraulic motor 33 are arranged on the structure frame 31, the angle adjusting worm 32 is driven by the hydraulic motor 33, and the angle adjusting worm wheel 34 is in matched transmission with the angle adjusting worm 32. Both sides of the structure frame 31 and both sides of the air guide sleeve 5 are respectively assembled with the fixed frame 1 through the rotating shaft holes 52.
As shown in fig. 2 and 5, the suction port size control function module of the present invention includes: the air guide sleeve adjusting device comprises an air guide sleeve 5 and an air guide sleeve adjusting oil cylinder 4, one end of the air guide sleeve adjusting oil cylinder 4 is connected to the movable body frame 3 through a movable body oil cylinder seat 38, the other end of the air guide sleeve adjusting oil cylinder 4 is connected to the air guide sleeve 5 through an air guide sleeve oil cylinder seat 51, and the air guide sleeve 5 is driven through the air guide sleeve adjusting oil cylinder 4. The two sides of the air guide sleeve 5 are assembled with the fixed frame 1 through the rotating shaft hole 52, so that the air guide sleeve 5 can rotate around the rotating shaft hole 52 when the air guide sleeve 5 is driven by the air guide sleeve adjusting cylinder 4.
When the pod adjusting cylinder 4 extends, the distance between the pod 5 connected by the pod adjusting cylinder 4 and the movable body frame 3 increases, and the movable body frame 3 plays a role of a frame in the process, so that only the pod 5 rotates around the rotating shaft hole 52 under the pushing action of the pod adjusting cylinder, thereby completing the adjustment of the gap between the pod 5 and the excavated soil layer and the compaction condition. Suction inlet size control function module will influence the condition in the inside flow field of drag head, influences the carrying capacity of the inside fluid of drag head to excavating silt etc. and the inside flow field of drag head has excavating capacity simultaneously to silt, through the regulatory action of suction inlet, can optimize the hydraulic excavation effect of suction inlet department simultaneously.
As shown in fig. 2, 3 and 5, the excavation depth adjusting function module of the present invention includes: the movable body frame 3 and the cutting depth adjusting oil cylinder 2, one end of the cutting depth adjusting oil cylinder 2 is connected to the fixed frame 1 through the cutting depth fixed body oil cylinder seat 11, the other end of the cutting depth adjusting oil cylinder is connected to the movable body frame 3 through the cutting depth movable body oil cylinder seat 37, and the movable body frame 3 is driven through the cutting depth adjusting oil cylinder 2. The two sides of the movable frame body 3 are assembled with the fixed frame 1 through the rotating shaft holes 52, so that the movable frame body 3 can rotate around the rotating shaft holes 52 when the movable frame body 3 is driven by the depth-cutting adjusting cylinder 2. A rake teeth rotating square beam 35 is arranged on the movable frame 3, and rake teeth 36 are arranged on the rake teeth rotating square beam 35.
When the depth-cutting adjusting cylinder 2 extends, the distance between the fixed frame 1 and the movable frame 3 connected by the depth-cutting adjusting cylinder 2 is increased, and the fixed frame 1 plays a role of a frame in the process, so that only the movable frame body 3 rotates around the rotating shaft hole 52 under the pushing action of the depth-cutting adjusting cylinder 2, and the rake teeth 36 are installed on the movable frame body 3, so that the rake teeth 36 move along with the movable frame body 3 under the action of the depth-cutting adjusting cylinder 2, thereby completing the function of adjusting the depth of cut between the rake teeth 36 and the excavated soil layer, and the excavation depth adjusting function module influences the excavation efficiency of the rake head.
As shown in fig. 3, 4 and 5, the cutting angle adjusting function module includes: rake teeth rotates square beam 35, angle modulation axis of rotation 39 and angle modulation drive division, and rake teeth rotates square beam 35 and installs on activity frame body 3 through angle modulation axis of rotation 39 for rake teeth rotates square beam 35 can rotate around angle modulation axis of rotation 39 under the drive of angle modulation drive division. The recliner driving member includes: a recliner worm 32, a hydraulic motor 33 and a recliner turbine 34. The angle adjusting worm wheels 34 are arranged at two ends of the rake tooth rotating square beam 35, the movable frame body 3 comprises a structure frame 31, the angle adjusting worm 32 and a hydraulic motor 33 are arranged on the structure frame 31, the angle adjusting worm 32 is driven by the hydraulic motor 33, and the angle adjusting worm wheels 34 are in matched transmission with the angle adjusting worm 32. Both sides of the structure frame 31 are assembled with the fixed frame 1 through the rotation shaft holes 52.
Because the rake teeth 36 are installed on the rake teeth rotating square beam 35, the angle adjusting worm wheels 34 are installed at two ends of the rake teeth rotating square beam 35, and the angle adjusting worm wheels 34 and the angle adjusting worm 32 are matched to rotate under the driving of the hydraulic motor 33, the rake teeth 36 rotate together with the rake teeth rotating square beam 35, so that the cutting angle between the rake teeth 36 and the excavated soil layer is changed, and the rake teeth cutting angle adjusting function is realized. The cutting angle adjusting function module can realize control on excavation power consumption and improve excavation efficiency.
The implementation steps of the invention are as follows:
adjusting mode: the adjustment modes can be roughly summarized into three typical modes, wherein the mode one is only used for adjusting the size of the suction port, the mode two is only used for adjusting the cutting angle, the mode three is only used for adjusting the digging depth, and the rest of the adjustment requirements can be summarized into a combination form of the three modes. In the mode when only the size of the suction port is adjusted, the size of the suction port can be adjusted through the movement action of the air guide sleeve 5 driven by the air guide sleeve adjusting oil cylinder 4; when only the cutting angle of the rake teeth is adjusted, the rake teeth are driven to rotate by the angle adjusting worm 32 and the angle adjusting turbine 34, and the rake teeth rotating square beam 35 driven to rotate by the hydraulic motor 33 drives the rake teeth 36 to rotate, so that the function of adjusting the cutting angle is realized; when only the mode of rake tooth excavation depth adjustment is carried out, the cutting depth adjusting oil cylinder 2 drives the movable frame body 3 to complete the adjustment of the cutting depth, but at the moment, because the movable frame body 3 moves, the size of the suction port and the cutting angle can be changed, and at the moment, the cutting angle is adjusted according to the size of the suction port adjusted by the first mode and the second mode.
The mechanism action process in the adjusting process is as follows:
and (3) adjusting the size of a suction port: when the drag head needs to adjust the suction opening in the excavation operation process, the adjustment is started to be driven by the air guide sleeve adjusting oil cylinder 4, when the air guide sleeve adjusting oil cylinder 4 extends, the distance between two parts connected by the air guide sleeve adjusting oil cylinder 4 is increased, because one end of the air guide sleeve adjusting oil cylinder 4 is arranged on the movable frame body 3 through the movable body oil cylinder seat 38, and the other end is assembled with the air guide sleeve 5 through the air guide sleeve oil cylinder seat 51, and the movable frame body 3 plays a role of a frame in the process, only the air guide sleeve 5 rotates around the rotating shaft hole 52 under the pushing action of the air guide sleeve adjusting oil cylinder 4, the adjustment of the gap and the compaction condition between the air guide sleeve 5 and the excavation soil layer is completed, the adjusting function influences the condition of the internal flow field of the drag head, the carrying capacity of fluid in the drag head on excavation silt and the like, and the dredging capacity of the internal flow field of the drag head on silt, the hydraulic excavation effect at the suction opening can be optimized simultaneously through the adjusting effect of the suction opening.
Adjusting the excavation depth: when the digging depth of the harrow head needs to be adjusted in the process of digging operation, the harrow head is driven by a depth-cutting adjusting oil cylinder 2, when the depth-cutting adjusting oil cylinder 2 extends, the distance between two parts connected by the depth-cutting adjusting oil cylinder 2 is increased, because one end of the depth-cutting adjusting oil cylinder 2 is arranged on a fixed frame 1 through a depth-cutting fixed body oil cylinder seat 11, and the other end is assembled with a movable frame body 3 through a depth-cutting movable body oil cylinder seat 37, the fixed frame 1 plays a role of a frame in the process, only a movable frame body 3 rotates around a rotating shaft hole 52 under the pushing action of the depth-cutting adjusting oil cylinder 2, because the harrow teeth 36 are arranged on the movable frame body 3, the harrow teeth 36 move along with the movable frame body 3 under the action of the depth-cutting adjusting oil cylinder 2, and the function of adjusting the depth of the harrow teeth relative to the digging soil layer is completed, the adjustment function will affect the drag head digging efficiency.
Adjusting the cutting angle: when the cutting angle of the drag head needs to be adjusted in the process of excavation operation, the hydraulic motor 33 starts to drive, and the angle adjusting worm 32 is meshed with the angle adjusting worm wheel 34 to drive the drag teeth 36 to rotate. The angle adjusting worm 32 mounted on the structure frame 31 is driven to rotate by a hydraulic motor 33 mounted on the structure frame 31, the angle adjusting worm 32 and the angle adjusting worm wheel 34 are in meshed transmission, so that the angle adjusting worm wheel 34 rotates by the driving of the hydraulic motor 33, the rake tooth rotating square beam 35 and the angle adjusting worm wheel 34 belong to components, therefore, the rake tooth rotating square beam 35 rotates along with the rotation of the angle adjusting worm wheel 34, and the rake teeth 36 mounted on the rake tooth rotating square beam 35 also rotate along with the rake tooth rotating square beam 35, so that the rake tooth cutting angle adjusting function is realized by the driving of the hydraulic motor 33 and the transmission of the rake teeth 36 through a rotating mechanism, the adjusting function can realize the control of excavating power consumption and improve excavating efficiency.
The above description is only illustrative of the preferred embodiments of the present invention and should not be taken as limiting the scope of the invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure should be considered as equivalent effective embodiments, and all the changes or modifications should fall within the protection scope of the technical solution of the present invention.
Claims (2)
1. An integrated efficient drag head is used for being connected with a drag suction pipe and is characterized by relating to a drag head suction port size adjusting mechanism, an excavating depth adjusting mechanism and a cutting angle adjusting mechanism, wherein the three adjusting mechanisms are respectively and independently driven and controlled;
the method comprises the following steps: the angle modulation device comprises a fixed frame (1), a movable body frame (3), a guide cover (5), a cutting depth adjusting oil cylinder (2), a guide cover adjusting oil cylinder (4) and an angle modulation driving part, wherein a rake tooth rotating square beam (35) is arranged on the movable body frame (3), and rake teeth (36) are arranged on the rake tooth rotating square beam (35);
the movable body frame (3) is driven by the cutting depth adjusting oil cylinder (2), one end of the cutting depth adjusting oil cylinder (2) is connected to the fixed frame (1) through a cutting depth fixed body oil cylinder seat (11), and the other end of the cutting depth adjusting oil cylinder (2) is connected to the movable body frame (3) through a cutting depth movable body oil cylinder seat (37);
the air guide sleeve (5) is driven by the air guide sleeve adjusting oil cylinder (4), one end of the air guide sleeve adjusting oil cylinder (4) is connected to the movable body frame (3) through a movable body oil cylinder seat (38), and the other end of the air guide sleeve adjusting oil cylinder (4) is connected to the air guide sleeve (5) through an air guide sleeve oil cylinder seat (51);
the rake teeth rotating square beam (35) is mounted on the movable body frame (3) through an angle adjusting rotating shaft (39), so that the rake teeth rotating square beam (35) can rotate around the angle adjusting rotating shaft (39) under the driving of an angle adjusting driving part, and the angle adjusting driving part comprises: the angle adjusting device comprises an angle adjusting worm (32), a hydraulic motor (33) and an angle adjusting worm wheel (34), wherein the angle adjusting worm wheel (34) is arranged at the end part of a rake tooth rotating square beam (35), the movable body frame (3) comprises a structure frame (31), the angle adjusting worm (32) and the hydraulic motor (33) are arranged on the structure frame (31), the angle adjusting worm (32) is driven by the hydraulic motor (33), and the angle adjusting worm wheel (34) is meshed with the angle adjusting worm wheel (32);
both sides of the structure frame (31) and both sides of the air guide sleeve (5) are respectively assembled with the fixed frame (1) through rotating shaft holes (52);
wherein the air guide sleeve adjusting oil cylinder (4) and the air guide sleeve (5) form a suction port size adjusting mechanism; the suction port size adjusting mechanism influences the internal flow field of the drag head; when the air guide sleeve adjusting oil cylinder (4) extends, the distance between the air guide sleeve (5) connected with the air guide sleeve adjusting oil cylinder (4) and the movable body frame (3) is increased, the movable body frame (3) plays a role of a frame in the process, the air guide sleeve (5) rotates around the rotating shaft hole (52) under the pushing action of the air guide sleeve adjusting oil cylinder (4), and therefore the adjustment of the gap between the air guide sleeve (5) and the excavated soil layer is completed;
the cutting depth adjusting oil cylinder (2) and the movable body frame (3) form the excavating depth adjusting mechanism; the excavating depth adjusting mechanism is used for adjusting the excavating depth of an excavated soil layer, when the cutting depth adjusting oil cylinder (2) extends, the distance between a fixed frame (1) and a movable frame (3) which are connected by the cutting depth adjusting oil cylinder (2) is increased, the fixed frame (1) plays a role of a frame in the process, the movable frame (3) rotates around the rotating shaft hole (52) under the pushing action of the cutting depth adjusting oil cylinder (2), rake teeth are installed on the movable frame (3), and the rake teeth move along with the movable frame (3) under the action of the cutting depth adjusting oil cylinder (2), so that the adjusting function of the cutting depth of the rake teeth relative to the excavated soil layer is completed;
the angle adjusting mechanism comprises an angle adjusting turbine (34), an angle adjusting worm (32), a rake tooth rotating square beam (35) and a hydraulic motor (33); the cutting angle adjusting mechanism is used for adjusting cutting resistance of the harrow teeth in the excavating process; because the rake teeth are arranged on the rake teeth rotating square beam (35), the angle adjusting worm wheels (34) are arranged at two ends of the rake teeth rotating square beam (35), and the angle adjusting worm wheels (34) and the angle adjusting worm (32) are matched to rotate under the driving of the hydraulic motor (33), the rake teeth rotate together with the rake teeth rotating square beam (35), so that the cutting angle between the rake teeth and the excavated soil layer is changed, and the function of adjusting the cutting angle of the rake teeth is realized.
2. An integrated high efficiency drag head as claimed in claim 1, wherein: two ends of the rake tooth rotating square beam (35) are symmetrically provided with one set of angle modulation driving component respectively, and the two sets of angle modulation driving components act synchronously.
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| EP1609916A2 (en) * | 1997-07-17 | 2005-12-28 | "Dredging International" | Drag head for a trailing suction hopper dredger and process for dredging by means of this drag head |
| CN102312454A (en) * | 2011-07-14 | 2012-01-11 | 中交天津港航勘察设计研究院有限公司 | Inter-tooth high-pressure water-flushing soil breaking rake head |
| CN105507355A (en) * | 2016-01-08 | 2016-04-20 | 浙江水利水电学院 | Self-propulsion trailing suction hopper dredger |
| CN110044593A (en) * | 2019-04-12 | 2019-07-23 | 中交疏浚技术装备国家工程研究中心有限公司 | Trailing suction hopper dredger hobboing cutter drag head test method |
| CN210049308U (en) * | 2019-01-10 | 2020-02-11 | 中交上海航道局有限公司 | Deep digging drag head of trailing suction hopper dredger |
| CN210194729U (en) * | 2019-05-26 | 2020-03-27 | 江苏佳华机械科技有限公司 | Mud digging claw for trailing suction dredger |
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2020
- 2020-04-20 CN CN202010314185.9A patent/CN111395433B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1609916A2 (en) * | 1997-07-17 | 2005-12-28 | "Dredging International" | Drag head for a trailing suction hopper dredger and process for dredging by means of this drag head |
| CN102312454A (en) * | 2011-07-14 | 2012-01-11 | 中交天津港航勘察设计研究院有限公司 | Inter-tooth high-pressure water-flushing soil breaking rake head |
| CN105507355A (en) * | 2016-01-08 | 2016-04-20 | 浙江水利水电学院 | Self-propulsion trailing suction hopper dredger |
| CN210049308U (en) * | 2019-01-10 | 2020-02-11 | 中交上海航道局有限公司 | Deep digging drag head of trailing suction hopper dredger |
| CN110044593A (en) * | 2019-04-12 | 2019-07-23 | 中交疏浚技术装备国家工程研究中心有限公司 | Trailing suction hopper dredger hobboing cutter drag head test method |
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| CN111395433A (en) | 2020-07-10 |
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