CN214423441U

CN214423441U - Rake tube hinged arm in wear-resistant double-sleeve form

Info

Publication number: CN214423441U
Application number: CN202022820428.4U
Authority: CN
Inventors: 武永顶; 胡京招; 缪袁泉; 崔鹏飞; 陈永梅; 陈选; 伍立说; 夏铖; 马源
Original assignee: CCCC National Engineering Research Center of Dredging Technology and Equipment Co Ltd
Current assignee: CCCC National Engineering Research Center of Dredging Technology and Equipment Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-10-19
Anticipated expiration: 2030-11-30

Abstract

The utility model provides a harrow pipe articulated arm of wear-resisting double casing tubular form, this harrow pipe articulated arm include interior bushing pipe, outer tube and box structure, interior bushing pipe is wear-resisting compound pipe, installs in the outer tube, the box structure contains connects the otic placode, forms articulated structure, and this double casing structure not only provides articulated degree of freedom for the harrow pipe to effectively solve the articulated arm not wear-resisting, and need the problem of whole change after wearing and tearing, increase of service life, change maintenance.

Description

Rake tube hinged arm in wear-resistant double-sleeve form

Technical Field

The utility model belongs to harrow suction pipe device field, in particular to wear-resisting double cannula's harrow pipe hinged arm structure of harrow suction dredger.

Background

The drag suction dredger is mainly used for dredging projects such as water conservancy dredging, river regulation, water area hydraulic filling and the like. The main hydraulic conveying medium of the drag suction dredger is a mixed fluid containing suspended solid particles of soil, gravel and the like, the fluid is easy to abrade a dredging and transporting machine, and a drag arm pipe is taken as one of main dredging machines and faces a larger abrasion problem. The drag head of the drag suction dredger works and shakes at the sea bottom and can directly impact a hull structure through a drag arm pipe, so that the working stability of the drag suction dredger is influenced.

Referring to fig. 1, the conventional rake pipe hinge arm is constructed in a single-layer pipe design and is easily worn. Once worn, the whole harrow pipe hinged arm needs to be maintained and replaced.

Due to the influence of severe working conditions, all components of the rake arm pipe are seriously abraded, and the replacement frequency of the components is inevitably high. The rake pipe hinged arm serving as an important component of the rake pipe is designed in an original single-pipe structure, once the pipe body is abraded to a certain degree, the whole assembly of the box body needs to be replaced, the structure replacement cost is high, the service life is short, and the rake pipe hinged arm is not easy to maintain.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that prior art exists, the utility model provides a harrow pipe articulated arm of wear-resisting double casing tubular form solves the problem that the articulated arm body needs whole change after wearing and tearing, improves the ability of resistance to wear, reduces and changes the maintenance cost, extension articulated arm body live time.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides a harrow pipe hinge arm of wear-resisting double cannula form, includes interior bushing pipe, outer tube and box structure, the outer tube the inside is arranged in to interior bushing pipe cover, installs through the fixed-position welding, the box structure is installed on the outer tube through the welding.

The wear-resistant composite pipe body of the lining pipe is made by adopting a Q355B base pipe and then surfacing high-chromium wear-resistant alloy on the inner wall of the pipeline by adopting a full-automatic annular surfacing method. Four positioning blocks are welded at the upper end, the lower end, the left end and the right end of the lining pipe respectively.

The outer sleeve comprises a neck flange, a pipe body and a flange plate, and the neck flange and the flange plate are welded on the pipe body through a cut.

Furthermore, the flange plate is manufactured by cutting a standard plate, the upper end and the lower end of the flange plate are provided with box body grooves, so that the box body structure can penetrate through the box body grooves, and stress-proof concentrated holes are formed in two sides of each groove.

The box structure is formed by sheet metal component welding preparation, forms the box structure, improves structural strength, and the tip forms articulated structure for connecting the otic placode, provides articulated degree of freedom.

The utility model has the advantages that:

the above technical scheme, the utility model, it has higher resistance to wear to improve harrow pipe articulated arm, needs the problem of whole change after solving the articulated arm part wearing and tearing to strengthened exterior structural strength, the maintenance is maintained simply more convenient, and the maintenance cost is lower.

Drawings

Fig. 1 is a cross-sectional view of a conventional rake pipe hinge arm in the art. Fig. 2 is a structural diagram of the rake pipe hinged arm in the form of wear-resistant double sleeves of the utility model: 2-1 explosion diagram and 2-2 installation diagram.

Fig. 3 is a front view of the wear-resistant double-sleeve rake-tube hinged arm of the present invention.

Fig. 4 is a left side view of the wear-resistant double-sleeve rake-tube hinged arm of the present invention.

Fig. 5 is a cross-sectional view of the wear-resistant double-sleeve rake-tube hinged arm of the present invention.

Fig. 6 is an installation and application diagram of the rake pipe hinged arm in the form of the wear-resistant double-sleeve of the present invention.

Description of the marks

1-lining pipe, 11-wear-resistant composite pipe and 12-positioning block;

2-outer sleeve, 21-neck flange, 22-pipe body and 23-flange plate;

3-box structure, 31-connecting lug plate and 32-box.

Detailed Description

For the purpose of facilitating understanding, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:

example 1

Referring to fig. 2-1, 2-2 and 3, the utility model relates to a wear-resistant double-sleeve type harrow tube hinged arm, which comprises an inner lining tube 1, an outer sleeve 2 and a box body structure 3; the inner lining pipe 1 is sleeved in the outer sleeve 2, and the box body structure 3 is welded and fixed on the outer sleeve 2.

Referring to fig. 3 and 5, the lining pipe 1 comprises a wear-resistant composite pipe 11 and positioning blocks 12, wherein 4 positioning blocks 12 are uniformly distributed at the upper, lower, left and right ends of the two ends of the wear-resistant composite pipe 11, and fillet welds of the positioning blocks are welded on the wear-resistant composite pipe 11; the wear-resistant composite pipe 11 is manufactured by using a material Q355B as a base pipe and then adopting a full-automatic annular surfacing method (mature surfacing process) to perform surfacing welding on the inner wall of the base pipe with high-chromium wear-resistant alloy, and has better wear resistance.

Referring to fig. 4 and 5, the outer sleeve 2 comprises a neck flange 21, a pipe body 22 and a flange plate 23, the neck flange 21 is butt-welded to one end of the pipe body 22, and the flange plate 23 is welded to the other end of the pipe body 22 by cutting; the flange plate 23 is formed by processing plate members, box grooves are formed in the upper end and the lower end of the flange plate, so that a box structure can pass through the box grooves, and stress concentration preventing holes are formed in the two sides of each box groove, so that stress concentration of the flange plate 23 is prevented.

Referring to fig. 4, the box structure 3 includes a rear connection ear plate 31 and a box body 32; the connecting lug plate 31 can provide a degree of freedom of articulation, forming an articulated assembly, which mitigates rigid impacts.

Application example

Referring to the structural design of the wear-resistant double-sleeve type harrow tube hinged arm in the embodiment 1, a box body structure 3 is manufactured by welding sheet metal parts to form a box body structure, and a connecting lug plate 31 is arranged at the end part of the box body structure to form a hinged structure so as to provide the degree of freedom of hinging.

As shown in fig. 6:

in the working stage of the harrow tube, slurry passes through the articulated arm in the embodiment 1, the slurry flows through the lining tube to abrade the lining tube 1, when the abrasion reaches a certain degree, the lining tube 1 needs to be maintained and replaced, and only the new lining tube 1 needs to be replaced, so that the problem of the service life of the whole articulated arm is solved. During operation, the articulated arm is designed through the embodiment 1, a multi-node harrow tube is formed, and the degree of freedom of action is increased.

The foregoing is the preferred embodiment of the present invention.

Claims

1. The utility model provides a harrow pipe hinge arm of wear-resisting double cannula form, characterized by, including inside lining pipe, outer tube and box structure, inside the outer tube was arranged in to the inside lining pipe endotheca, installed through the fixed-position welding, the box structure is installed on the outer tube through the welding.

2. The wear-resistant double-sleeve type harrow tube articulated arm of claim 1, wherein the wear-resistant composite tube body of the lining tube is made of a Q355B base tube and then high-chromium wear-resistant alloy is overlaid on the inner wall of the tube by full-automatic annular overlaying welding.

3. A wear-resistant double-sleeve type rabble arm hinge arm as claimed in claim 2, wherein four positioning blocks are welded to the upper, lower, left and right ends of the inner lining tube respectively.

4. A wear resistant rake hinge arm in the form of a double sleeve as claimed in claim 1 wherein said outer sleeve comprises a neck flange, a tubular body and a flange plate, both of which are welded to the tubular body by a split.

5. A wear-resistant rabble arm in the form of a double sleeve as claimed in claim 4, wherein said flange plate is cut from a standard plate, the upper and lower ends of the flange plate are provided with housing recesses for the housing structure to pass through, and the two recesses are provided with stress concentration preventing holes on both sides.

6. A wear-resistant double-sleeve type rabble arm hinge as claimed in claim 1, wherein the box structure is made of sheet metal parts by welding to form the box structure, and the connecting ear plate is arranged at the end part to form a hinge structure to provide a hinge degree of freedom.