CN216379695U - Cutter suction dredger reamer with poking stone plate - Google Patents

Abstract

The utility model relates to a cutter suction dredger reamer with a poking plate. The reamer comprises a circular reamer seat, a reamer ring and a plurality of reamer arms which are circumferentially arranged at equal angle intervals, wherein the outer edge of each reamer arm is provided with a plurality of reamer tooth seats, and reamer teeth are arranged on the reamer tooth seats; a plurality of stone poking plates are arranged on the edge of the inner side of each reamer arm; the poking stone plates are crescent, the inner sides of the poking stone plates are provided with notches consistent with the contour of the inner side edge of the reamer arm, the inner side edge of the reamer arm falls into the notches and the notches are welded and fixed, the root of the poking stone plates bypasses the inner side edge of the reamer arm and reaches the inner side of the edge, and each poking stone plate on each reamer arm is gradually reduced along the edge from the root to the end in the extending direction. The utility model has reasonable structural design, improves the connecting strength between the poking stone plate and the cutter arm to avoid falling off, and reduces the influence on the power of the reamer and the influence on the mud passing rate.

Description

Cutter suction dredger reamer with poking stone plate

Technical Field

The utility model belongs to the technical field of cutter suction dredger equipment, and particularly relates to a cutter suction dredger reamer with a poking plate.

Background

The reamer is one of the important devices of the cutter suction dredger equipment, plays a role in scraping the water bottom, and the scraped soil is transferred and conveyed along the mud suction pipeline under the negative pressure suction effect provided by the mud pump and the mud suction pipeline, so that the underwater excavating and dredging functions are achieved. Structurally, the reamer generally comprises a reamer body, a plurality of cutter arms are arranged on the reamer body, cutter teeth are arranged on the side portions of the cutter arms, the reamer integrally rotates in a rotating mode during operation, the cutter arms and the cutter teeth also rotate in a rotating mode, the cutter teeth moving to the bottom act on underwater silt, rocks and the like, and the silt and broken stones enter the reamer body through the space between the cutter arms after being loosened and then enter the silt suction pipeline. When the reamer excavates sandy gravel and rubble soil, as the soil body contains large-particle-size stones, the stones enter the mud pump and easily break the pump liner, so that the abrasion is increased, and the pump efficiency is reduced; part stone card still can make machine operation unbalance in the impeller the inside, damages transmission bearing support fixed screw, causes the machine to decrease the accident. The maintenance time of the ship is increased, the time utilization rate of the ship and the dredging production rate are reduced, and the dredging cost is increased.

By additionally arranging the stone-proof device on the reamer, the problems can be effectively alleviated and even solved. The existing stone-proof devices can be roughly divided into three types according to the structural form: stone-proof nets, stone-proof rings and stone-proof grids. The stone-proof net is a net stone-proof structure which is welded between reamer arms or directly welded in the reamer, and has the defects of narrow application range, complex structure, more welding spots, longer manufacturing period, easiness in being broken, time and labor consuming repair welding repair, influence on the cutting force of the reamer and the like; the stone-proof ring is an annular stone-proof structure which is welded in the reamer and is close to the mud suction port, and has the defects of easy damage of the stone-proof ring, difficult on-site manufacture, difficult welding and positioning, easy blockage of the reamer during clay excavation, frequent inspection and maintenance and the like when more stones are used; the stone-proof grating is a grating stone-proof structure welded on the mud suction port, and has the defects of easy blockage of the suction port, long time for drawing the port, easy extrusion and breakage of stone blocks carried by the rotating cutter arm, relatively complex manufacturing process and the like.

The specification of chinese utility model patent CN206346244U discloses such cutter suction dredger prevent stone reamer, through install on the reamer tool arm prevent that the stone slab promotes the stone capacity of preventing of reamer additional, specifically, install a plurality of stone slabs of preventing on every tool arm, prevent that the bottom edge of stone slab passes through locating pin and tool arm positioning connection and welded fastening. The utility model is an improvement of equipment used in engineering projects by the applicant, and the following problems are found in the improved use process: firstly, if the bonding strength between the stone-proof reamer and the cutter arm is high, the problem of preventing a stone plate from falling off is often caused; secondly, the whole stone-proof plate is contacted with the underwater sandstone, so that the operation of the reamer is subjected to excessive extra resistance, and the reamer consumes excessive extra power; moreover, the size and the shape of the stone plates at each position on each cutter arm are completely consistent, and the cutter arms are in spiral shapes, so that the space between the inner ends of the cutter arms is large, the space between the outer ends of the cutter arms is small, and when the stone plates are in the same size, the gap between the outer ends of the cutter arms is too small, the mud trafficability at the position is excessively reduced, and the mud dredging efficiency is reduced

Therefore, the structure of the reamer needs to be optimally designed to solve the technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides the cutter suction dredger reamer with the poked stone plate, which is reasonable in structural design and solves the technical problems in the known technology, the connection strength between the poked stone plate and the cutter arm is improved to avoid falling off, the influence on the power of the reamer is reduced, and the influence on the mud passing rate is reduced.

The technical scheme adopted by the utility model for solving the technical problems in the prior art is as follows: a cutter suction dredger reamer with a poking stone plate comprises a circular reamer seat, a reamer ring and a plurality of reamer arms which are circumferentially arranged at equal angle intervals, wherein the root part of each reamer arm is fixedly connected with the reamer seat, the end part of each reamer arm is fixedly connected with the reamer ring, the outer edge of each reamer arm is provided with a plurality of reamer tooth seats, and reamer teeth are arranged on the reamer tooth seats; a plurality of stone poking plates are arranged on the edge of the inner side of each reamer arm; the poking stone plates are crescent, the inner sides of the poking stone plates are provided with notches consistent with the contour of the inner side edge of the reamer arm, the inner side edge of the reamer arm falls into the notches and the notches are welded and fixed, the root of the poking stone plates bypasses the inner side edge of the reamer arm and reaches the inner side of the edge, and each poking stone plate on each reamer arm is gradually reduced along the edge from the root to the end in the extending direction.

The utility model has the advantages and positive effects that:

compared with the existing reamer device, the reamer device provided by the utility model optimizes the structure of the poked stone plate and the connection mode between the poked stone plate and the reamer arm. Through making group slabstone for crescent shape and its root extend to the inboard at place reamer tool arm edge, make the root of group slabstone fall in the inside of reamer, group slabstone only part and submarine grit contact at reamer moving in-process like this, consequently reduced the resistance of group slabstone to the reamer production, reduced owing to the configuration prevents that stone group stone subassembly is to the consumption of reamer power.

Compared with the existing stone-proof plate, the edge of the knife arm falls into the notch on the knife arm and is completely welded and fixed, so that the edge of the knife arm is bypassed by the knife arm at the root position of the knife arm, the welding connection strength is improved, and the root position is less impacted, so that the knife arm of the reamer device is not easy to fall off in the operation process of the reamer, and the reamer device is stable and reliable in operation. On the other hand, the root of the poking stone plate is positioned inside the reamer, so that the poking stone plate has a certain crushing effect on the lump stone entering the reamer. Through setting up each group's slabstone on the same reamer tool arm and along the direction of tool arm edge extension reduce gradually, compare with the structure of the slabstone of preventing such as current, the group's slabstone that reduces gradually can effectively reduce occupation in space especially the space between each reamer tool arm tip between the pair reamer tool arm, guarantees the trafficability characteristic of mud on the reamer device, reduces the influence that pair reamer work efficiency produced.

Preferably: the distance between two adjacent poking stone plates on the reamer arm, the distance between the poking stone plate at the root part and the reamer seat, and the distance between the poking stone plate at the end part and the reamer ring are equal; the area of each poking plate is equal to the gap between the reamer arms at the position.

Preferably: the poking plate is made by cutting a metal plate, and the plate body of the poking plate is vertical to the outer vertical surface of the knife arm of the reamer.

Preferably: the height of the poking plate is less than or equal to the height of the reamer tooth seat.

Preferably: the root of the reamer arm is welded and fixed with the outer end face of the reamer seat, and the end of the reamer arm is welded and fixed with the outer vertical face of the reamer ring.

Preferably: the number of reamer arms is 8, and the angle between two adjacent reamer arms is 45 degrees.

Preferably: each reamer tooth seat on each reamer arm and each reamer arm are integrally cast and formed, the rear portion of each reamer tooth is provided with a slot, and the end portion of each reamer tooth seat is inserted into the slots of the reamer teeth and fixedly connected through bolts.

Preferably: and tungsten carbide wear-resistant coatings are arranged on the surfaces of the reamer arm, the reamer tooth seat, the reamer tooth and the stone-proof plate.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a single reamer arm of the present invention;

fig. 3 is a schematic view of the cross-sectional structure a-a in fig. 2.

In the figure:

1. a cutter seat; 2. a reamer arm; 3. a reamer ring; 4. a reamer toothholder; 5. reamer teeth; 6. a poke plate.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are described in detail.

Referring to fig. 1 and 2, the reamer for cutter suction dredger with a poking plate of the present invention comprises a circular reamer base 1, a reamer ring 3, and a plurality of reamer arms 2 circumferentially arranged at equal angular intervals, wherein the root of each reamer arm 2 is fixedly connected with the reamer base 1, and the end of each reamer arm is fixedly connected with the reamer ring 3.

As shown in the figure, each reamer arm 2 is a spiral arm, the root of the reamer arm 2 is welded and fixed with the outer end face of the reamer seat 1, and the end of the reamer arm 2 is welded and fixed with the outer vertical face of the reamer ring 3. In this embodiment, the number of the reamer arms 2 is 8, and the angle between two adjacent reamer arms 2 is 45 °. It is of course conceivable that the number of reamer arms 2 could also be 4, 6 etc. depending on the specific design.

A plurality of reamer tooth holders 4 are arranged on the outer edge of each reamer arm 2, and reamer teeth 5 are mounted on the reamer tooth holders 4. As shown in fig. 1, the outer edge of the reamer arm 2 referred to in this patent means the edge located at the position of the outer screw of the reamer arm 2, and correspondingly, the inner edge means the edge located at the position of the inner screw of the reamer arm 2.

In this embodiment, each reamer tooth holder 4 on each reamer arm 2 and the reamer arm 2 are integrally cast, the rear portion of each reamer tooth 5 is provided with a slot, and the end portion of each reamer tooth holder 4 is inserted into the slot of each reamer tooth 5 and fixedly connected by bolts. Like this, reamer sword tooth 5 just can carry out convenient dismouting to reamer toothholder 4 on, and reamer sword tooth 5 can take place excessive wearing and tearing and can't continue to use or lead to reamer device's energy efficiency to reduce when continuing to use after the operation of a certain time, can dismantle worn and torn reamer sword tooth 5 this moment, and the reamer sword tooth 5 that more renews makes reamer device keep the ability of dredging.

A plurality of stone deflector plates 6 are arranged on the inner side edge of each reamer arm 2, as shown in the figure, the stone deflector plates 6 are positioned in the gap between two adjacent reamer arms 2, the blade arm gap (namely, the complete channel through which slurry passes) is divided into a plurality of separated small channels by the stone deflector plates 6, so that the stones entering the reamer through the blade arm gap are reduced, especially the stones with large particle size cannot pass through the small channels and enter the reamer, the failure rate of the cutter suction dredger equipment is reduced, the failure-free operation time is improved, and the dredging operation efficiency is improved.

Referring to fig. 3, it can be seen that:

the poking plate 6 is crescent, the inner side of the poking plate is provided with a notch consistent with the contour of the inner side edge of the reamer arm 2, the inner side edge of the reamer arm 2 falls into the notch, and the reamer arm and the notch are welded and fixed. In this embodiment, the poked stone plate 6 is made by cutting a metal plate, and the plate body of the poked stone plate 6 is perpendicular to the outer vertical surface of the position of the reamer arm 2.

The root of the deflector plate 6 runs around the inner edge of the reamer arm 2 and reaches the inner side of the edge, so that the deflector plate 6 has one part located outside the reamer and another part located inside the reamer, which is the biggest difference between the present reamer device and the existing reamer device. In the operation process of the reamer, the part of the poking stone plate 6, which is positioned outside the reamer, is in direct contact with the soil on the water bottom, the part of the poking stone plate 6, which is positioned inside the reamer, is not in direct contact with the soil on the water bottom, but the part, which is positioned inside the reamer, is in contact with mud and rock blocks entering the inside of the reamer. Because the reamer continuously rotates to generate a dredging effect, and the mud suction pipeline continuously pumps mud, mud flow is formed in the reamer, the mud flow entering the reamer can collide with the part, located inside, of the poking stone plate 6 in the high-speed flowing process, secondary crushing effect is generated on the block stones entering the reamer, and the particle size of the block stones entering the mud suction pipeline and the mud pump is further reduced. The existing stone-proof plate additionally arranged on the reamer arm 2 only blocks the stone entering the reamer from outside to inside, and the stone entering the reamer is not subjected to further secondary treatment, so that the particle size of the stone is not further reduced.

Because the root position of the poking stone plate 6 is fixedly welded with the inner side of the inner side edge of the reamer arm 2, the crescent-shaped poking stone plate 6 can be regarded as being arranged on the edge of the reamer arm 2 in a semi-surrounding mode, and compared with the existing anti-stone plate which is completely positioned on the outer side of the reamer arm 2, the fixed connection between the poking stone plate 6 and the reamer arm 2 is more reliable. The reliability is improved in two aspects: firstly, because the inner side edge of the reamer arm 2 falls on the notch of the poked stone plate 2, the welding seam between the poked stone plate 2 and the reamer arm 2 is a U-shaped welding seam, so that the welding seam is firmer than a straight welding seam; secondly, in the running process of the reamer, the welding seam at the position of the notch and the welding seam at the position of the root part of the inner side are less impacted by the outside large-particle-size stone, so that the poking stone plate 2 is not easy to impact and fall off, and compared with the existing stone plate prevention structure, the poking stone plate 2 is not easy to fall off from the reamer device.

Each of the deflector plates 6 on each reamer arm 2 is gradually reduced along the edge from the root to the direction in which the end extends, i.e. the deflector plate 6 is larger at the position with the larger blade arm gap, and the deflector plate 6 is smaller at the position with the smaller blade arm gap. The advantages of this are: the dialling slabstone 6 that reduces gradually can effectively reduce the occupation of space between pair reamer sword arm 2 especially the space between each reamer sword arm 2 tip, guarantees the trafficability characteristic of mud on the reamer device, reduces the influence that pair reamer work efficiency produced.

In this embodiment, the distance between two adjacent poked stone plates 6 on the reamer arm 2, the distance between the poked stone plate 6 at the root and the reamer seat 1, and the distance between the poked stone plate 6 at the end and the reamer ring 3 are equal; the area of each poking plate 6 is equal to the gap between the reamer arms 2.

Wherein, the distance between two adjacent group's stone slab 6 indicates the distance between two adjacent group's stone slab 6 the central point, and the distance between group's stone slab 6 of root and reamer seat 1 indicates the perpendicular distance between the outer terminal surface of the central point of group's stone slab 6 of root and reamer seat 1, and the distance between group's stone slab 6 of tip and reamer ring 3 indicates the perpendicular distance between the central point of the group's stone slab 6 of tip and the outer facade of reamer ring 3. It should be noted that, in the present embodiment, the equal distances are approximately equal, and are limited by the processing conditions, the distances of the poke plate 6 cannot be controlled very accurately in a normal situation after being mounted on the reamer arm 2, and the working characteristics of the reamer device of the present invention are not affected by a certain deviation of the positions of the poke plate 6 as a whole.

The area between the poked stone plates 6 is the area of the orthographic projection of the poked stone plates 6 on the ground when the poked stone plates are horizontally placed, and the gap between the reamer knife arms 2 is the vertical distance between the inner side edge of the reamer knife arm 2 and the outer side edge of the adjacent reamer knife arm 2 at the position of the poked stone plates 6. Given the "taper" rule for the dialling plate 6, the area of the dialling plate 6 is also gradually reduced as the gap between the reamer arms 2 is gradually reduced. In general, the contour of the inner edge of the reamer arm 2 is kept consistent, so that the contour of the notch on the poke plate 6 is basically unchanged, and the change of the area of the poke plate 6 means that the outer arc contour changes, the area of the plate body is increased when the outer arc contour moves outwards, and the area of the plate body is reduced when the outer arc contour moves inwards. It should be noted that, the same ratio in this embodiment means approximately the same ratio, and is limited by the processing conditions, and a certain deviation occurs in the area control and the installation position control of each poke plate 6, and the deviation does not affect the working characteristics of the reamer device in the utility model.

In this embodiment, the height of the poked stone plate 6 is less than or equal to the height of the reamer tooth seat 4, wherein the height of the poked stone plate 6 is the distance between the highest point of the plate body of the poked stone plate 6 and the outer surface of the reamer arm 2 in the cross-sectional structure shown in fig. 3, and similarly, the height of the reamer tooth seat 4 is the distance between the highest point of the reamer tooth seat 4 and the outer surface of the reamer arm 2.

The purpose of the foregoing design is: reamer device is at the in-process of moving, and only reamer tooth 5 and partly reamer toothholder 4 and the soil property direct contact of excavation, and dial slabstone 6 because highly be less than reamer toothholder 4 highly and basically not with the soil property direct contact of excavation, can effectively reduce the extrusion and the frictional action that dial slabstone 6 received like this, avoid dialling slabstone 6 to participate in the process of dredging promptly, make and dial slabstone 6 only possess and prevent functions such as stone, group stone and rubble.

In this embodiment, in order to prolong the service life of the whole reamer device and prolong the period of maintenance operation, tungsten carbide wear-resistant coatings are respectively arranged on the surfaces of the reamer arm 2, the reamer tooth holder 4, the reamer tooth 5 and the stone-proof plate 6, and the thermal spraying processing of the tungsten carbide coatings can be performed after the corresponding components are processed and molded.

The construction method comprises the following steps:

firstly, obtaining a reamer seat 1, a reamer ring 3 and a plurality of reamer arms 2 with reamer tooth seats 4 through split machining and forming, processing tungsten carbide coatings on all parts, then welding and installing the reamer arms 2 between the reamer seat 1 and the reamer ring 3, and installing and fixing reamer teeth 5 on the reamer tooth seats 4; the mounting position of dialling slabstone 6 is markd on each reamer arm 2, measures the size in clearance between reamer arm 2 in each position, according to the principle that "the ratio of the size of the clearance of dialling slabstone 6 and place position is invariable" in each position, adopts equipment such as laser cutting machine to cut and obtain dialling slabstone 6 and carries out the processing of tungsten carbide coating to dialling slabstone 6, later will dial slabstone 6 welding and install the calibration position on reamer arm 2.

Claims (8)

1. A cutter suction dredger reamer with a poking plate comprises a circular reamer seat (1), a reamer ring (3) and a plurality of reamer arms (2) which are circumferentially arranged at equal angle intervals, wherein the root part of each reamer arm (2) is fixedly connected with the reamer seat (1), the end part of each reamer arm is fixedly connected with the reamer ring (3), the outer edge of each reamer arm (2) is provided with a plurality of reamer tooth seats (4), and reamer teeth (5) are arranged on the reamer tooth seats (4); the method is characterized in that: a plurality of poked stone plates (6) are arranged at the edge of the inner side of each reamer arm (2); dialling slabstone (6) and being crescent shape, the inboard has the breach unanimous with the inboard marginal profile of reamer sword arm (2), the inboard edge of reamer sword arm (2) falls into this breach and both welded fastening, the root of dialling slabstone (6) is walked around the inboard marginal inboard edge of reamer sword arm (2) and is arrived the inboard at place edge, each group slabstone (6) on every reamer sword arm (2) reduce gradually along the direction that the place edge extended to the tip by the root.

2. The cutter suction dredger reamer with a poked plate of claim 1, wherein: the distance between two adjacent poked stone plates (6) on the reamer arm (2), the distance between the poked stone plate (6) at the root part and the reamer seat (1), and the distance between the poked stone plate (6) at the end part and the reamer ring (3) are equal; the area of each poking plate (6) is equal to the gap between the reamer arms (2).

3. The cutter suction dredger reamer with a poked plate of claim 2, wherein: the poking plate (6) is made by cutting a metal plate, and the plate body of the poking plate (6) is vertical to the outer vertical surface of the position of the reamer arm (2).

4. A cutter suction dredger reamer with a poked plate as claimed in claim 3, characterized in that: the height of the poking plate (6) is less than or equal to that of the reamer tooth seat (4).

5. The cutter suction dredger reamer with a poked plate of claim 4, wherein: the root of the reamer arm (2) is welded and fixed with the outer end face of the reamer seat (1), and the end of the reamer arm (2) is welded and fixed with the outer vertical face of the reamer ring (3).

6. The cutter suction dredger reamer with a poked plate of claim 5, wherein: the number of the reamer arms (2) is 8, and the angle between every two adjacent reamer arms (2) is 45 degrees.

7. The cutter suction dredger reamer with a poked plate of claim 6, wherein: each reamer tooth seat (4) on each reamer arm (2) and the reamer arm (2) are integrally cast and formed, the rear part of each reamer tooth (5) is provided with a slot, and the end part of each reamer tooth seat (4) is inserted into the slot of each reamer tooth (5) and fixedly connected by bolts.

8. The cutter suction dredger reamer with a poked plate of claim 7, wherein: the surfaces of the reamer arm (2), the reamer tooth seat (4), the reamer tooth (5) and the poking plate (6) are all provided with tungsten carbide wear-resistant coatings.

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