CN110346178B - Marine dredger and dredging method - Google Patents
Marine dredger and dredging method Download PDFInfo
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- CN110346178B CN110346178B CN201910521680.4A CN201910521680A CN110346178B CN 110346178 B CN110346178 B CN 110346178B CN 201910521680 A CN201910521680 A CN 201910521680A CN 110346178 B CN110346178 B CN 110346178B
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- mud taking
- mud
- pipe
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- pull rod
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/12—Dippers; Dredgers
Abstract
The invention discloses a marine dredger and a dredging method, and aims to overcome the defects that the dredger is labor-intensive in dredging operation and high in labor intensity. The mud taking device comprises a mud taking pipe, mud taking claws and a push-pull rod arranged in the mud taking pipe, wherein the lower end of the mud taking pipe is hinged with two oppositely arranged mud taking claws, the lower end of the push-pull rod is hinged with two connecting rods, the end parts of the two connecting rods are respectively hinged with the two mud taking claws, a pre-tightening spring is arranged between the push-pull rod and the mud taking pipe, the lower ends of the two mud taking claws are abutted together, a mud taking cavity is formed between the inner walls of the two mud taking claws, an inwards concave sliding groove is formed in the outer wall of the mud taking claw, an inflation hole is formed in the bottom surface of the sliding groove, a slidable piston is hermetically arranged in the sliding groove, an air bag is connected onto the piston and is contained in the sliding groove, a one-way air vent communicated with the air bag is formed in the piston, a one-way valve is arranged in the one-way air vent hole, the inflation hole is communicated with the inflation pipe, the inflation pipe extends to the upper end of the mud taking pipe, the upper end part of the push rod extends out of the mud taking pipe, and the end part of the sliding groove is connected with a limiting ring for limiting the piston.
Description
Technical Field
The present invention relates to a dredging device, and more particularly, to a marine dredger and a dredging method.
Background
At present, need detect the research to the bed mud in ocean research, consequently need often take a sample to ocean bed mud, the method commonly used is that the staff holds the dredge, inserts the end of getting of dredge in the bed mud, gets to make after the bed mud and pull out the dredge with strength, because the weight of mud and water, in addition the weight of the iron of dredge itself, the staff operation is very hard, and working strength is big.
Disclosure of Invention
The invention overcomes the defects of laborious operation and high labor intensity of the mud dredger, and provides the marine mud dredger and the mud dredging method.
In order to solve the technical problems, the invention adopts the following technical scheme: the marine dredger comprises a mud taking pipe, mud taking claws and a push-pull rod arranged in the mud taking pipe, wherein the lower end of the mud taking pipe is hinged with two oppositely arranged mud taking claws, the lower end of the push-pull rod is hinged with two connecting rods, the end parts of the two connecting rods are respectively hinged with the two mud taking claws, a pre-tightening spring is arranged between the push-pull rod and the mud taking pipe, the lower ends of the two mud taking claws are abutted together, a mud taking cavity is formed between the inner walls of the two mud taking claws, an inwards concave chute is formed in the outer wall of the mud taking claw, an inflation hole is formed in the bottom surface of the chute, a slidable piston is hermetically arranged in the chute, an air bag is connected onto the piston and is contained in the chute, a one-way air vent communicated with the air bag is formed in the piston, a one-way valve is arranged in the one-way air vent, the inflation hole is communicated with the inflation pipe, the inflation pipe extends to the upper end of the mud taking pipe, and the end part of the chute is connected with a limiting ring for limiting the piston.
When the mud dredger is used for dredging, the mud taking pipe is firstly inserted into water downwards, after bottom mud is inserted, the push-pull rod is pulled upwards, the connecting rod is pulled upwards, so that the mud taking claws are driven to rotate outwards, and the two mud taking claws are separated; then, continuously inserting the mud taking pipe downwards to a certain depth, loosening the push-pull rod, and moving the push-pull rod downwards under the action of a pre-tightening spring, so that the two mud taking claws approach to each other and abut against each other, and the grabbed sediment is placed in the mud taking cavity; the mud taking pipe is shaken up and down to loosen a mud taking claw arranged in the bottom mud, then the piston in the chute is inflated into the chute through the inflation pipe, the piston in the chute moves outwards under the action of air pressure, the piston continues to inflate after moving to the position of the limit ring, the air pressure in the chute is increased to flush the one-way valve, the air bag is inflated by high-pressure air, and the air bag bulges outwards, so that the buoyancy of the whole mud taking device is increased; after inflation, the mud taking pipe is lifted upwards, the push-pull rod is pulled upwards, the two mud taking claws are separated, the grabbed sediment is collected, the push-pull rod is loosened, and under the action of the pre-tightening spring, the push-pull rod returns to facilitate the next mud taking operation.
When the mud extractor is used for launching, the two mud extracting claws are abutted together, so that the contact area with water is reduced, the launching resistance is reduced, and the convenience is brought to launching. The mud taking claw is opened by pulling the push-pull rod upwards after the mud taking claw enters the sediment, so that the sediment can conveniently enter the mud taking cavity. Two mud-taking claws are closed after the sediment enters the mud-taking cavity, so that the mud-taking cavity is in a closed state, and the taken sediment is prevented from flowing out. When the air bag is inflated, the piston moves outwards at first, and when sediment exists in the chute, the hard piston easily pushes the sediment outwards, so that the sediment at the position can be conveniently driven to enable the air bag to be more easily inflated. And the piston slides through the chute, so that the volume of the mud extractor is increased, and the buoyancy is increased. The mud extractor saves more labor in the upward pulling process by increasing the buoyancy. The mud dredger is convenient and labor-saving in mud fetching operation, greatly reduces labor intensity and is beneficial to improving working efficiency.
Preferably, the check valve comprises a valve seat, a valve ball, an abutting spring and a spring seat, wherein a truncated cone-shaped sealing surface is arranged in the valve seat, the abutting spring is installed between the spring seat and the valve ball, and the valve ball is in sealing abutting contact with the sealing surface. The butt spring provides the pretightning force for the valve ball, makes the piston can remove the spacing ring position.
Preferably, a sliding block capable of sliding up and down is installed in the position, close to the lower end, of the mud taking pipe, the push-pull rod is connected to the sliding block, and the connecting rod is hinged to the sliding block. The slider reciprocates in getting the mud pipe, and the connecting rod articulates on the slider, moves more steadily reliably.
Preferably, a plurality of limit screws are connected above the pre-tightening spring on the mud taking pipe, the upper end of the pre-tightening spring abuts against the limit screws, and the lower end of the pre-tightening spring abuts against the sliding block. The limiting screw plays a good role in positioning the pre-tightening spring.
Preferably, the mud taking pipe is provided with two long grooves for avoiding the connecting rods, and the two connecting rods respectively penetrate through the two long grooves. The long groove provides a motion space for the connecting rod, and the connecting rod can run reliably.
Preferably, the upper end of the mud taking pipe is connected with a positioning cover, the upper end of the push-pull rod is provided with a limiting disc and an operating handle, the limiting disc is arranged below the operating handle and supported on the positioning cover, and the limiting disc is in threaded connection with the push-pull rod. The limiting disc has a limiting effect on the push-pull rod, and after the push-pull rod is pulled upwards to a proper position, the limiting disc can be rotated to enable the limiting disc to move downwards to the position of the positioning cover, so that the push-pull rod is prevented from being pulled downwards under the action of the pre-tightening spring. When the mud taking claws need to be closed, the limiting disc is rotated reversely, the limiting disc moves upwards, the push-pull rod moves downwards under the action of the pre-tightening spring, and the two mud taking claws are closed and abutted together.
Preferably, the position, close to the edge, of the piston is connected with a protective sleeve, the protective sleeve is connected with a limiting ring, and the protective sleeve is elastic and is in a tensioning state. The protective sleeve in the tensioning state prevents bottom mud from being stained on the inner wall of the sliding groove, and reliable sealing sliding of the piston is guaranteed.
Preferably, the outer wall of the lower end of the mud taking pipe is connected with two support rods, and the two mud taking claws are respectively hinged at the end parts of the two support rods. The arrangement of the supporting rod is convenient for the reliable installation of the mud-taking claw.
Preferably, the air bag is provided with a deflation valve. The deflation valve is convenient for deflating the air bag.
A dredging method using a marine dredger comprises the following steps: a. the mud taking pipe is downwards inserted into water, after bottom mud is inserted, the push-pull rod is upwards pulled, the connecting rod is upwards pulled, and therefore the mud taking claws are driven to outwards rotate, and the two mud taking claws are separated; b. after the mud taking pipe is continuously inserted downwards to a certain depth, the push-pull rod is loosened, and moves downwards under the action of a pre-tightening spring, so that the two mud taking claws approach each other and abut against each other, and the grabbed sediment is placed in the mud taking cavity; c. the mud taking pipe is shaken up and down to loosen a mud taking claw arranged in the bottom mud, then the piston in the chute is inflated into the chute through the inflation pipe, the piston in the chute moves outwards under the action of air pressure, the piston continues to inflate after moving to the position of the limit ring, the air pressure in the chute is increased to flush the one-way valve, the air bag is inflated by high-pressure air, and the air bag bulges outwards, so that the buoyancy of the whole mud taking device is increased; d. after inflation, the mud taking pipe is lifted upwards, the push-pull rod is pulled upwards, the two mud taking claws are separated, the grabbed sediment is collected, the push-pull rod is loosened, and under the action of the pre-tightening spring, the push-pull rod returns to facilitate the next mud taking operation.
Compared with the prior art, the invention has the beneficial effects that: the mud dredger is convenient and labor-saving in mud fetching operation, greatly reduces labor intensity and is beneficial to improving working efficiency.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is an enlarged partial schematic view of the present invention;
in the figure: 1. the device comprises a mud taking pipe, 2 a mud taking claw, 3 a push-pull rod, 4 a connecting rod, 5 a pre-tightening spring, 6 a mud taking cavity, 7 a sliding groove, 8 an inflation hole, 9 a piston, 10 an air bag, 11 a one-way vent hole, 12 a one-way valve, 13 a inflation pipe, 14 a limiting ring, 15 a valve seat, 16 a valve ball, 17 a butting spring, 18 a spring seat, 19 a sealing surface, 20 a sliding block, 21 a limiting screw, 22 a strip groove, 23 a positioning cover, 24 a limiting disc, 25 an operating handle, 26 a handle, 27 a protective sleeve, 28 a supporting rod, 29 a high-pressure air storage tank, 30, a baffle plate, 31 and a blocking cover.
Detailed Description
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
example (b): a marine dredger (see attached drawings 1 and 2) comprises a mud taking pipe 1, mud taking claws 2 and a push-pull rod 3 arranged in the mud taking pipe, wherein the lower end of the mud taking pipe is hinged with two oppositely arranged mud taking claws, the lower end of the push-pull rod is hinged with two connecting rods 4, the end parts of the two connecting rods are respectively hinged with the two mud taking claws, a pre-tightening spring 5 is arranged between the push-pull rod and the mud taking pipe, a sliding block 20 which can slide up and down is arranged in the mud taking pipe and is close to the lower end of the mud taking pipe, the push-pull rod is connected onto the sliding block, the connecting rods are hinged onto the sliding block, a plurality of limiting screws 21 are connected above the pre-tightening spring on the mud taking pipe, the pre-tightening spring is sleeved on the push-pull rod, the upper end of the pre-tightening spring abuts against the limiting screws, and the lower end of the pre-tightening spring abuts against the sliding block. The mud taking pipe is provided with two long grooves 22 for avoiding the connecting rods, and the two connecting rods respectively penetrate through the two long grooves. The outer wall of the lower end of the mud taking pipe is connected with two support rods 28, and the two mud taking claws are respectively hinged at the end parts of the two support rods. The upper end of the mud taking claw is provided with a connecting column, a connecting rod is hinged at the upper end of the connecting column, and a supporting rod is hinged at the lower end of the connecting column.
The lower ends of the two mud taking claws are abutted together, a mud taking cavity 6 is formed between the inner walls of the two mud taking claws, an inwards concave sliding groove 7 is formed in the outer wall of the mud taking claw, an inflation hole 8 is formed in the bottom surface of the sliding groove, a slidable piston 9 is hermetically installed in the sliding groove, an air bag 10 is connected onto the piston, an air release valve is installed on the air bag, the air bag is stored in the sliding groove, a one-way air vent 11 communicated with the air bag is formed in the piston, a one-way valve 12 is installed in the one-way air vent, the inflation hole is communicated with an inflation tube 13, the inflation tube extends to the upper end of the mud taking tube, a control valve is installed on the inflation tube, the inflation tube is connected to a high-pressure air storage tank 29, and the high-pressure air storage tank is installed on a ship. The upper end of the push rod extends out of the mud taking pipe, the end part of the sliding groove is connected with a limiting ring 14 used for limiting the piston, the inner diameter of the limiting ring is smaller than the outer diameter of the piston, and the limiting ring is connected to the mud taking claw through a screw.
The check valve comprises a valve seat 15, a valve ball 16, an abutting spring 17 and a spring seat 18, wherein a truncated cone-shaped sealing surface 19 is arranged in the valve seat, the abutting spring is installed between the spring seat and the valve ball, and the valve ball is in sealing abutting connection with the sealing surface. Be equipped with the through-hole in the disk seat, the through-hole is step pore structure, and sealed face sets up the transition position between the major diameter part and the path part of through-hole, and spring seat connection is in the major diameter end position of through-hole, and the path end orientation of through-hole aerifys the hole setting, and the major diameter end orientation gasbag setting of through-hole. The upper end of the mud taking pipe is connected with a positioning cover 23, the upper end of the push-pull rod is provided with a limiting disc 24 and an operating handle 25, the limiting disc is arranged below the operating handle and supported on the positioning cover, and the limiting disc is in threaded connection with the push-pull rod. A plurality of handles 26 are uniformly distributed on the outer wall of the upper end of the mud taking pipe. The piston is connected with a protective sleeve 27 close to the edge, the protective sleeve is connected with a limiting ring, and the protective sleeve is elastic and is in a tensioning state. Get the mud claw and be the arc structure, get the mud claw both ends and be equipped with baffle 30, get the mud pipe lower extreme and connect flexible fender lid 31, get mud claw upper end and baffle upper end and all be connected with the fender lid.
A dredging method of a marine dredger comprises the following steps: a. the mud taking pipe is downwards inserted into water, after bottom mud is inserted, the push-pull rod is upwards pulled, the connecting rod is upwards pulled, and therefore the mud taking claws are driven to outwards rotate, and the two mud taking claws are separated; b. after the mud taking pipe is continuously inserted downwards to a certain depth, the push-pull rod is loosened, and moves downwards under the action of a pre-tightening spring, so that the two mud taking claws approach each other and abut against each other, and the grabbed sediment is placed in the mud taking cavity; c. the mud taking pipe is shaken up and down to loosen a mud taking claw arranged in the bottom mud, then the piston in the chute is inflated into the chute through the inflation pipe, the piston in the chute moves outwards under the action of air pressure, the piston continues to inflate after moving to the position of the limit ring, the air pressure in the chute is increased to flush the one-way valve, the air bag is inflated by high-pressure air, and the air bag bulges outwards, so that the buoyancy of the whole mud taking device is increased; d. after inflation, the mud taking pipe is lifted upwards, the push-pull rod is pulled upwards, the two mud taking claws are separated, the grabbed sediment is collected, the air bag is deflated, the push-pull rod is loosened, and under the action of the pre-tightening spring, the push-pull rod returns to facilitate the next mud taking operation.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (9)
1. A marine dredger is characterized by comprising a mud taking pipe, mud taking claws and a push-pull rod arranged in the mud taking pipe, wherein the lower end of the mud taking pipe is hinged with two oppositely arranged mud taking claws, the lower end of the push-pull rod is hinged with two connecting rods, the end parts of the two connecting rods are respectively hinged with the two mud taking claws, a pre-tightening spring is arranged between the push-pull rod and the mud taking pipe, the lower ends of the two mud taking claws are abutted together, a mud taking cavity is formed between the inner walls of the two mud taking claws, the outer wall of the mud taking claw is provided with a concave chute, the bottom surface of the chute is provided with an inflation hole, a slidable piston is hermetically arranged in the chute, the piston is connected with an airbag, the airbag is contained in the chute, the piston is provided with a one-way air vent communicated with the airbag, a one-way valve is arranged in the one-way air vent, the inflation hole is communicated with the inflation pipe, the inflation pipe extends to the upper end of the mud taking pipe, the upper end of the push rod extends out of the mud taking pipe, and the end of the chute is connected with a limiting ring for limiting the piston; the piston is connected with a protective sleeve close to the edge, the protective sleeve is connected with a limiting ring, and the protective sleeve is elastic and is in a tensioning state.
2. The marine dredge of claim 1 wherein the check valve comprises a valve seat, a valve ball, an abutment spring, and a spring seat, wherein the valve seat has a frustoconical sealing surface, the abutment spring is mounted between the spring seat and the valve ball, and the valve ball is in sealing abutment against the sealing surface.
3. The marine dredge of claim 1 wherein the dredge pipe has a slide block mounted near the lower end and capable of sliding up and down, the push-pull rod is connected to the slide block, and the connecting rod is hinged to the slide block.
4. The marine dredge of claim 3 wherein the dredge pipe has a plurality of limit screws connected to the upper part of the pre-tightening spring, the upper end of the pre-tightening spring is connected to the limit screws, and the lower end of the pre-tightening spring is connected to the slide block.
5. A dredger according to claim 1, wherein the dredging pipe is provided with two elongated slots for avoiding the connecting rod, and the connecting rod passes through the two elongated slots respectively.
6. The marine dredge of claim 1 wherein the upper end of the dredge pipe is connected to a positioning cap, the upper end of the push-pull rod is provided with a limiting disc and an operating handle, the limiting disc is disposed below the operating handle, the limiting disc is supported on the positioning cap, and the limiting disc is in threaded connection with the push-pull rod.
7. A dredger according to any one of claims 1 to 6, wherein the outer wall of the lower end of the dredging pipe is connected with two support rods, and the two dredging claws are hinged to the ends of the two support rods respectively.
8. A dredger according to any one of claims 1 to 6, wherein the air bag is provided with a bleed valve.
9. A dredging method using the marine dredge of claim 1, characterized by comprising the steps of: a. the mud taking pipe is downwards inserted into water, after bottom mud is inserted, the push-pull rod is upwards pulled, the connecting rod is upwards pulled, and therefore the mud taking claws are driven to outwards rotate, and the two mud taking claws are separated; b. after the mud taking pipe is continuously inserted downwards to a certain depth, the push-pull rod is loosened, and moves downwards under the action of a pre-tightening spring, so that the two mud taking claws approach each other and abut against each other, and the grabbed sediment is placed in the mud taking cavity; c. the mud taking pipe is shaken up and down to loosen a mud taking claw arranged in the bottom mud, then the piston in the chute is inflated into the chute through the inflation pipe, the piston in the chute moves outwards under the action of air pressure, the piston continues to inflate after moving to the position of the limit ring, the air pressure in the chute is increased to flush the one-way valve, the air bag is inflated by high-pressure air, and the air bag bulges outwards, so that the buoyancy of the whole mud taking device is increased; d. after inflation, the mud taking pipe is lifted upwards, the push-pull rod is pulled upwards, the two mud taking claws are separated, the grabbed sediment is collected, the push-pull rod is loosened, and under the action of the pre-tightening spring, the push-pull rod returns to facilitate the next mud taking operation.
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| CN201910521680.4A CN110346178B (en) | 2019-06-17 | 2019-06-17 | Marine dredger and dredging method |
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| CN201910521680.4A CN110346178B (en) | 2019-06-17 | 2019-06-17 | Marine dredger and dredging method |
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| CN110346178B true CN110346178B (en) | 2022-03-22 |
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| CN111795860A (en) * | 2020-07-14 | 2020-10-20 | 江西师范大学 | Ship-borne automatic benthonic animal acquisition and rapid screening separation device |
| CN115173321B (en) * | 2022-07-06 | 2023-10-03 | 河南玖迈建筑工程有限公司 | Electrical wire threading device for building |
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| CN109632377A (en) * | 2018-12-19 | 2019-04-16 | 武汉软件工程职业学院(武汉市广播电视大学) | A kind of silt from the bottom of lake sampler and its acquisition method |
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| CN110346178A (en) | 2019-10-18 |
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