CN110056029A - A kind of combination drive-type dredging carriage - Google Patents

A kind of combination drive-type dredging carriage Download PDF

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Publication number
CN110056029A
CN110056029A CN201910165434.XA CN201910165434A CN110056029A CN 110056029 A CN110056029 A CN 110056029A CN 201910165434 A CN201910165434 A CN 201910165434A CN 110056029 A CN110056029 A CN 110056029A
Authority
CN
China
Prior art keywords
suction unit
rake
unit vehicle
fixedly installed
fixed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910165434.XA
Other languages
Chinese (zh)
Inventor
慎辰
张吉平
蒋梦嫣
汪洋
吴艳青
洪国军
张晴波
潘润道
蒋明
董元跃
徐而敏
徐剑
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Shipbuilding NDRI Engineering Co Ltd
Original Assignee
China Shipbuilding NDRI Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Shipbuilding NDRI Engineering Co Ltd filed Critical China Shipbuilding NDRI Engineering Co Ltd
Priority to CN201910165434.XA priority Critical patent/CN110056029A/en
Publication of CN110056029A publication Critical patent/CN110056029A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/8833Floating installations
    • E02F3/885Floating installations self propelled, e.g. ship
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92Digging elements, e.g. suction heads

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Handcart (AREA)

Abstract

The present invention relates to technical field of test equipment, and disclose a kind of combination drive-type dredging carriage, including hull, the side of hull top is connected with tractor, the internal activity of tractor is connected with winch, the side of winch front and back is fixedly installed with reel, the outside of reel is fixedly connected with wirerope, the positive side of winch is fixedly connected with fixed cylinder, the side of the outside of fixed cylinder is fixedly connected with connecting rope, the side of tractor is fixedly connected with fixed block, the top movable of fixed block is connected with fixed plate, the internal activity of fixed plate is connected with bolt.The combination drive-type dredging carriage, pass through being used cooperatively between hydraulic stem, rake arms and drag head, it can be realized drag head lifting, by passing through being equipped between motor, telescopic rod, rake arms and drag head, rake arms and drag head can be driven to rotate by motor, the adjusting for realizing drag head angle, achievees the effect that inhale mud comprehensively.

Description

A kind of combination drive-type dredging carriage
Technical field
The present invention relates to technical field of test equipment, specially a kind of combination drive-type dredging carriage.
Background technique
Rake suction unit vehicle is the key equipment of dredging technology equipment test platform, is used to complete rake and inhales, twists suction, grab boat The model test of the dredging system of three classes main force ship type and crucial dredging tool.
It when carrying out dredging technology experiment using rake suction unit vehicle, needs to adjust the height and angle of rake suction nozzle, meets to Ha Noi The test of different depth and different location needs fixed trolley when rake suction unit vehicle is tested, and prevents trolley in rake suction unit vehicle Upper sliding influences experimental result, thus it is proposed that a kind of combination drive-type dredging carriage.
Summary of the invention
The present invention provides a kind of combination drive-type dredging carriages, have adjustable drag head height, adjust rake suction nozzle angle Degree, realizes the test of different depth, and trolley fixed advantage when guarantee test, trolley sliding influences experiment effect when solving experiment Fruit, the problem of cannot achieve the test of different depth.
The invention provides the following technical scheme: a kind of combination drive-type dredging carriage, including hull, the hull top Side is connected with tractor, and the internal activity of the tractor is connected with winch, the side of the winch front and back It is fixedly installed with reel, the outside of the reel is fixedly connected with wirerope, and the positive side of winch is fixedly connected with Fixed cylinder, the side of the outside of the fixed cylinder are fixedly connected with connecting rope, and the side of the tractor is fixedly connected with fixation Block, the top movable of the fixed block are connected with fixed plate, and the internal activity of the fixed plate is connected with bolt, the hull top The other side in portion is connected with rake suction unit vehicle, and the top movable of the rake suction unit vehicle is connected with trolley, the rake suction unit roof The side in portion is fixedly installed with control room, and the Corner Strapped of the trolley is equipped with away wheel, it is described walk wheel ex-ternal transmission connection There is chain, the side of the rake suction unit vehicle is fixedly installed with fixed case, motor, institute are fixedly installed at the top of the fixed case It states and is fixedly connected with hydraulic stem on the output shaft of motor, the bottom of the hydraulic stem is fixedly installed with rake arms, the rake arms One end is fixedly connected with drag head, and riser is fixedly mounted in the inside of the rake suction unit car bottom plate side, and the side of the riser is fixed Spring is installed, the side of the spring is fixedly installed with movable plate, and the side of the movable plate is fixedly connected with snap-gauge, described Level board is fixedly installed at the top of movable plate.
Selected, the quantity of the reel is two, the fixed company in inside that the outside of two reels passes through wirerope It connects.
Selected, the inside of the fixed block offers circular hole, the internal activity of the circular hole opened up inside the fixed block It is connected with bolt.
Selected, driving walking mechanism, the rake are fixedly installed on the main beam of the rake suction unit vehicle carriage four corners The inside of suction unit vehicle is fixedly installed with horizontal guide wheel mechanism, and the inside of the rake suction unit vehicle is fixedly installed with braking system, described The inside of rake suction unit vehicle is fixedly installed with the electric-control system that tests the speed.
It is selected, it is described walk wheel quantity be four, the outside that wheel is walked described in four is flexibly connected by the inside of chain.
Selected, the inside of the fixed case offers elongated slot, the internal activity of the elongated slot opened up inside the fixed case It is connected with hydraulic stem.
Selected, the inside of the rake suction unit car bottom plate side offers loose slot, opens inside the rake suction unit car bottom plate If the internal activity of loose slot be connected with snap-gauge, the outside of described snap-gauge one end is connect with the internal activity for walking wheel.
Selected, the side at the top of the level board is connected with the bail extended to inside rake suction unit car bottom plate, institute It states the side at the top of rake suction unit car bottom plate and offers through-hole.
The present invention have it is following the utility model has the advantages that
1, the combination drive-type dredging carriage can be realized rake by being used cooperatively between hydraulic stem, rake arms and drag head Head lifting, by the way that rake arms can be driven by motor by being equipped between motor, telescopic rod, rake arms and drag head It is rotated with drag head, realizes the adjusting of drag head angle, achieve the effect that inhale mud comprehensively.
2, combination drive-type dredging carriage, by harrowing suction unit vehicle, walking the cooperation between wheel, snap-gauge, movable plate and spring Trolley can be effectively locked on rake suction unit vehicle by setting, while by between rake suction unit vehicle, movable plate, spring and bail It is used cooperatively, realizes that trolley moves on rake suction unit car bottom plate.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention;
Fig. 2 is the side view of trolley of the present invention;
Fig. 3 is partial enlargement diagram at A of the invention.
In figure: 1, hull;2, tractor;3, winch;4, reel;5, wirerope;6, fixed cylinder;7, connecting rope;8, fixed Block;9, fixed plate;10, bolt;11, suction unit vehicle is harrowed;12, trolley;13, control room;14, wheel is walked;15, chain;16, fixed case; 17, motor;18, hydraulic stem;19, rake arms;20, drag head;21, riser;22, spring;23, movable plate;24, snap-gauge;25, horizontal Plate.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Fig. 1-3, a kind of combination drive-type dredging carriage, including hull 1 are please referred to, the side at 1 top of hull is flexibly connected There is tractor 2, the internal activity of tractor 2 is connected with winch 3, and the side of 3 front and back of winch is fixedly installed with reel 4, the quantity of reel 4 is two, and the outside of two reels 4 is fixedly connected by the inside of wirerope 5, passes through reel 4, wirerope Being used cooperatively between 5 and tractor 2 can be such that two winches 3 move synchronously, and the outside of reel 4 is fixedly connected with steel Cord 5, the positive side of winch 3 are fixedly connected with fixed cylinder 6, and the side of the outside of fixed cylinder 6 is fixedly connected with connecting rope 7, The side of tractor 2 is fixedly connected with fixed block 8, and the inside of fixed block 8 offers circular hole, the circular hole opened up inside fixed block 8 Internal activity be connected with bolt 10, pass through fixed block 8, bolt 10, fixed plate 9, rake suction unit vehicle 11 and tractor 2 between matching Setting is closed, rake suction unit vehicle 11 and tractor 2 can be connected, while easy to disassemble, the top movable of fixed block 8 is connected with fixation Plate 9, the internal activity of fixed plate 9 are connected with bolt 10, and the other side at 1 top of hull is connected with rake suction unit vehicle 11, and rake is inhaled The inside of 11 bottom plate side of trolley offers loose slot, the internal activity connection for the loose slot that rake 11 base plate interior of suction unit vehicle opens up There is snap-gauge 24, the outside of 24 one end of snap-gauge is connect with the internal activity for walking wheel 14, by snap-gauge 24, rake suction unit vehicle 11 and walks wheel 14 Between be used cooperatively, can be effectively fixed by trolley 12 in simulated experiment, harrow the main beam of 11 vehicle frame four corners of suction unit vehicle On be fixedly installed with driving walking mechanism, the inside of rake suction unit vehicle 11 is fixedly installed with horizontal guide wheel mechanism, rake suction unit vehicle 11 Inside is fixedly installed with braking system, and the inside of rake suction unit vehicle 11 is fixedly installed with the electric-control system that tests the speed, by rake suction unit vehicle 11, Horizontal guide wheel mechanism, braking system, being equipped between the electric-control system that tests the speed that drive walking mechanism can guarantee to harrow suction unit Vehicle 11 works normally, and the top movable of rake suction unit vehicle 11 is connected with trolley 12, and the side at 11 top of rake suction unit vehicle is fixedly installed with Control room 13, the Corner Strapped of trolley 12 are equipped with away wheel 14, and the quantity for walking wheel 14 is four, and four outsides for walking wheel 14 pass through The inside of chain 15 is flexibly connected, by walking wheel 14, chain 15, directive wheel and inverse buckling wheel, solve different simulation tests and The different tests stage back, up, self weight etc. respectively to component, the ex-ternal transmission for walking wheel 14 is connected with chain 15, harrows suction unit vehicle 11 side is fixedly installed with fixed case 16, and the inside of fixed case 16 offers elongated slot, the elongated slot opened up inside fixed case 16 Internal activity is connected with hydraulic stem 18, passes through being equipped between motor 17, hydraulic stem 18, rake arms 19 and drag head 20, energy It enough realizes that drag head 20 is gone up and down by hydraulic stem 18, while driving rake arms 19 to rotate by motor 17, realize 20 angle of drag head It adjusts, the top of fixed case 16 is fixedly installed with motor 17, hydraulic stem 18, liquid are fixedly connected on the output shaft of motor 17 The bottom of compression bar 18 is fixedly installed with rake arms 19, and one end of rake arms 19 is fixedly connected with drag head 20, harrows 11 bottom plate side of suction unit vehicle Inside riser 21 is fixedly mounted, the side of riser 21 is fixedly installed with spring 22, and the side of spring 22 is fixedly installed with activity Plate 23, the side of movable plate 23 are fixedly connected with snap-gauge 24, and the top of movable plate 23 is fixedly installed with level board 25, level board 25 The side at top is connected with the bail for extending to rake 11 base plate interior of suction unit vehicle, and the side harrowed at the top of 11 bottom plate of suction unit vehicle is opened It is small to can be improved by being equipped between rake suction unit vehicle 11, level board 25, movable plate 23 and through-hole for fixation equipped with through-hole The stability of vehicle 12.
Working principle: in use, opening motor 17, motor 17 drives hydraulic stem 18 to rotate, and hydraulic stem 18 drives rake The rotation of arm 19, rake arms 19 drive drag head 20 to rotate, and hydraulic stem 18 drives drag head 20 to go up and down, and when fixing trolley 12, extract bail, bullet out 22 Compressive activities plate 23 of spring, movable plate 23 squeeze snap-gauge 24, and snap-gauge 24 sticks into away inside wheel 14.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.Simultaneously in the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length Degree ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", The orientation or positional relationship of the instructions such as "outside", " clockwise ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, only It is that for the convenience of describing the present invention and simplifying the description, rather than the equipment of indication or suggestion meaning or element must have specifically Orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (8)

1. a kind of combination drive-type dredging carriage, including hull (1), it is characterised in that: the side activity at the top of the hull (1) It is connected with tractor (2), the internal activity of the tractor (2) is connected with winch (3), winch (3) front and back Side is fixedly installed with reel (4), and the outside of the reel (4) is fixedly connected with wirerope (5), winch (3) front Side be fixedly connected with fixed cylinder (6), the side of the outside of the fixed cylinder (6) is fixedly connected with connecting rope (7), described to lead The side for drawing vehicle (2) is fixedly connected with fixed block (8), and the top movable of the fixed block (8) is connected with fixed plate (9), described The internal activity of fixed plate (9) is connected with bolt (10), and the other side at the top of the hull (1) is connected with rake suction unit vehicle (11), the top movable of rake suction unit vehicle (11) is connected with trolley (12), and the side at the top of rake suction unit vehicle (11) is fixed It is equipped with control room (13), the Corner Strapped of the trolley (12) is equipped with away wheel (14), described to walk to take turns the ex-ternal transmission of (14) It is connected with chain (15), the side of rake suction unit vehicle (11) is fixedly installed with fixed case (16), the top of the fixed case (16) Portion is fixedly installed with motor (17), is fixedly connected with hydraulic stem (18) on the output shaft of the motor (17), described hydraulic The bottom of bar (18) is fixedly installed with rake arms (19), and one end of the rake arms (19) is fixedly connected with drag head (20), and the rake is inhaled Riser (21) are fixedly mounted in the inside of trolley (11) bottom plate side, and the side of the riser (21) is fixedly installed with spring (22), The side of the spring (22) is fixedly installed with movable plate (23), and the side of the movable plate (23) is fixedly connected with snap-gauge (24), level board (25) are fixedly installed at the top of the movable plate (23).
2. a kind of combination drive-type dredging carriage according to claim 1, it is characterised in that: the quantity of the reel (4) It is two, the outside of two reels (4) on the inside of wirerope (5) by being fixedly connected.
3. a kind of combination drive-type dredging carriage according to claim 1, it is characterised in that: the fixed block (8) it is interior Portion offers circular hole, and the internal activity of the circular hole opened up inside the fixed block (8) is connected with bolt (10).
4. a kind of combination drive-type dredging carriage according to claim 1, it is characterised in that: rake suction unit vehicle (11) vehicle Driving walking mechanism is fixedly installed on the main beam of frame four corners, the inside of rake suction unit vehicle (11) is fixedly installed with level Guide wheel mechanism, the inside of rake suction unit vehicle (11) are fixedly installed with braking system, and the inside of rake suction unit vehicle (11) is fixed The electric-control system that tests the speed is installed.
5. a kind of combination drive-type dredging carriage according to claim 1, it is characterised in that: described to walk to take turns the quantity of (14) It is four, the outside that wheel (14) is walked described in four is flexibly connected by the inside of chain (15).
6. a kind of combination drive-type dredging carriage according to claim 1, it is characterised in that: the fixed case (16) it is interior Portion offers elongated slot, and the internal activity of the elongated slot opened up inside the fixed case (16) is connected with hydraulic stem (18).
7. a kind of combination drive-type dredging carriage according to claim 1, it is characterised in that: rake suction unit vehicle (11) bottom The inside of plate side offers loose slot, and the internal activity for the loose slot that described rake suction unit vehicle (11) base plate interior opens up is connected with Snap-gauge (24), the outside of described snap-gauge (24) one end are connect with the internal activity for walking wheel (14).
8. a kind of combination drive-type dredging carriage according to claim 1, it is characterised in that: at the top of the level board (25) Side be connected with extend to rake suction unit vehicle (11) base plate interior bail, it is described rake suction unit vehicle (11) bottom plate at the top of one Side offers through-hole.
CN201910165434.XA 2019-03-05 2019-03-05 A kind of combination drive-type dredging carriage Pending CN110056029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910165434.XA CN110056029A (en) 2019-03-05 2019-03-05 A kind of combination drive-type dredging carriage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910165434.XA CN110056029A (en) 2019-03-05 2019-03-05 A kind of combination drive-type dredging carriage

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CN110056029A true CN110056029A (en) 2019-07-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111764454A (en) * 2020-06-23 2020-10-13 浙江满洋船务工程有限公司 Underwater emergency dredging treatment equipment

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR0109819A (en) * 2000-04-05 2003-01-21 Gto Subsea As Method and device for moving underwater rocks and sediments
CN204023662U (en) * 2014-04-21 2014-12-17 中国石油化工股份有限公司 A kind of intelligent pontoon desilting mud machine
CN106245696A (en) * 2016-08-17 2016-12-21 武汉理工大学 Scalable dredging system based on spiral operating type
CN207063020U (en) * 2017-08-07 2018-03-02 李洪斌 A kind of dredging device for water conservancy projects
CN108203998A (en) * 2018-02-28 2018-06-26 无锡市翱宇特新科技发展有限公司 A kind of high silt removing dredging device of service efficiency
CN108589811A (en) * 2018-06-26 2018-09-28 裘尧云 A kind of broken rock strand suction ship
CN208069875U (en) * 2018-04-02 2018-11-09 山西机电职业技术学院 A kind of bicycle parking device
CN108797688A (en) * 2018-06-27 2018-11-13 安徽佳明环保科技股份有限公司 A kind of drag head device of adjustable rake mud depth
CN208415344U (en) * 2018-03-21 2019-01-22 浙江大学苏州工业技术研究院 It is a kind of for cleaning the underwater desilting Operation Van of aeration head device
CN109322341A (en) * 2018-09-27 2019-02-12 四川达虹宇建筑工程有限公司 A kind of hydraulic engineering silt displacement device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR0109819A (en) * 2000-04-05 2003-01-21 Gto Subsea As Method and device for moving underwater rocks and sediments
CN204023662U (en) * 2014-04-21 2014-12-17 中国石油化工股份有限公司 A kind of intelligent pontoon desilting mud machine
CN106245696A (en) * 2016-08-17 2016-12-21 武汉理工大学 Scalable dredging system based on spiral operating type
CN207063020U (en) * 2017-08-07 2018-03-02 李洪斌 A kind of dredging device for water conservancy projects
CN108203998A (en) * 2018-02-28 2018-06-26 无锡市翱宇特新科技发展有限公司 A kind of high silt removing dredging device of service efficiency
CN208415344U (en) * 2018-03-21 2019-01-22 浙江大学苏州工业技术研究院 It is a kind of for cleaning the underwater desilting Operation Van of aeration head device
CN208069875U (en) * 2018-04-02 2018-11-09 山西机电职业技术学院 A kind of bicycle parking device
CN108589811A (en) * 2018-06-26 2018-09-28 裘尧云 A kind of broken rock strand suction ship
CN108797688A (en) * 2018-06-27 2018-11-13 安徽佳明环保科技股份有限公司 A kind of drag head device of adjustable rake mud depth
CN109322341A (en) * 2018-09-27 2019-02-12 四川达虹宇建筑工程有限公司 A kind of hydraulic engineering silt displacement device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111764454A (en) * 2020-06-23 2020-10-13 浙江满洋船务工程有限公司 Underwater emergency dredging treatment equipment

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Application publication date: 20190726

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