阅读说明：本技术 一种抛石整平头及其建造工艺 (Riprap leveling head and construction process thereof ) 是由 方龙 吴正峰 季秋兵 沈鹏鹏 施浩杰 于 2019-08-16 设计创作，主要内容包括：本发明涉及一种抛石整平头及其建造工艺,其特征在于：包括整平刮板、整平油缸、内框架模块、外框架模块和声呐模块；所述整平刮板设置在内框架模块的底端上,内框架模块通过滑轮导轨结构沿着外框架模块在整平油缸驱动下往复移动；建造工艺具体包括：S1：拼装胎架的布置；S2：内外框架中圆筒体制作；S3：圆筒体第一次预装配；S4：圆筒体第二次预装配；S5：外框架圆筒体加工；S6：内外框架的制作；S7：抛石整平头的整体拼装；抛石整平头建造过程中的各个阶段均考虑加放焊接收缩余量及反变形；定位装焊的顺序严格按照：由下往上、由内往外的原则进行逐级安装的顺序进行；该工艺方便焊接、合拢精度高、能够提高焊接质量和工作效率。(the invention relates to a riprap leveling head and a construction process thereof, which are characterized in that: the device comprises a leveling scraper, a leveling oil cylinder, an inner frame module, an outer frame module and a sonar module; the leveling scraper is arranged at the bottom end of the inner frame module, and the inner frame module reciprocates along the outer frame module under the driving of a leveling oil cylinder through a pulley guide rail structure; the construction process specifically comprises the following steps: s1: arranging an assembled jig frame; s2: manufacturing a cylinder in the inner frame and the outer frame; s3: pre-assembling the cylinder for the first time; s4: pre-assembling the cylinder for the second time; s5: processing an outer frame cylinder; s6: manufacturing an inner frame and an outer frame; s7: integrally assembling the riprap and flat head; in each stage of the construction process of the riprap leveling head, the shrinkage allowance of the welding and the reversible deformation are considered; the sequence of positioning and welding strictly follows: the step-by-step installation is carried out according to the principle of from bottom to top and from inside to outside; the process has the advantages of convenient welding, high folding precision and capability of improving the welding quality and the working efficiency.)

1. a riprap flat head is characterized in that: the device comprises a leveling scraper, a leveling oil cylinder, an inner frame module, an outer frame module and a sonar module; the leveling scraper is arranged at the bottom end of the inner frame module and connected with the inner frame module, the outer frame module is nested outside the inner frame module, and the inner frame module reciprocates along the outer frame module under the driving of a leveling oil cylinder through a pulley guide rail structure;

the inner frame module comprises an inner cylinder body and an inner frame; the inner cylinder body is arranged on the inner frame, and the outer surface of the inner frame is provided with a pulley structure; the outer frame module comprises an outer cylinder and an outer frame; the outer cylinder body is arranged on the outer frame, and a plurality of guide rail structures are arranged on the inner side of the outer frame; the outer cylinder is embedded in the inner cylinder, the inner frame is embedded in the outer frame, the outer cylinder is in guide fit with the inner cylinder, and the pulley structure on the inner frame is matched with the guide rail of the outer frame to drive the inner cylinder under the driving of the leveling oil cylinder; the top end of the outer frame is provided with a lifting lug structure;

The sonar module sets up on the surface of the side of frame.

2. A process for manufacturing a riprap leveling head as recited in claim 1, wherein: the concrete construction steps are as follows:

s1: arranging an assembly jig frame: four cylindrical jig frame units are distributed in a rectangular structure, and a jig frame unit is arranged in the center of the jig frame unit in the rectangular structure;

S2: manufacturing a cylinder body in the inner frame and the outer frame: sequentially carrying out blanking, groove opening, edge rolling, longitudinal seam welding and edge-doubling on a plate to realize the manufacture of the cylinder;

s3: cylinder first preassembly: after the cylinder is manufactured, performing inspection, pre-assembling the cylinder according to the requirement of a blueprint after the inspection is qualified, marking out a relative position line according to the actual position to measure the actual assembly gap, and recording;

S4: cylinder preassembly for the second time: welding a part directly welded with the inner and outer frame cylinders and the cylinders into an assembly, performing secondary preassembly according to the requirement of the step S2, measuring the actual assembly gap, and making a record;

S5: processing an outer frame cylinder: according to the recorded data in the step S3, the cylinder in the outer frame is sent to a machining workshop, and the outer circle of the cylinder is locally machined to ensure the assembly gap;

S6: manufacturing an inner frame and an outer frame: participating the inner and outer frame cylinders produced according to the steps S1 to S4 in the manufacture of the inner frame and the outer frame;

S6.1, carrying out integral scribing on the eight guide rails in the outer frame and processing a plane;

s6.2, integrally marking machining is carried out on the flange in the outer frame and the four groups of oil cylinders;

S7: and (3) integral assembly of the riprap whole flat head: horizontally arranging a leveling scraper on a jig frame, and positioning an inner frame module above the leveling scraper; then the outer frame module is nested on the inner frame module; install the flattening hydro-cylinder on outer frame module, install the leading wheel on inner frame module, install the sonar module on the side of outer frame at last.

3. the manufacturing process of the riprap leveling head according to claim 2, wherein the diameter of the outer frame cylinder in S2 is as long as 1524 mm plus or minus 2mm, the roundness is less than or equal to 2mm, and the straightness is less than or equal to 2mm/m, the diameter of the inner frame cylinder is Ø 1578 mm plus or minus 2mm, the roundness is less than or equal to 2mm, and the straightness is less than or equal to 2 mm/m.

4. The process of constructing a riprap leveling head as claimed in claim 2, wherein: and when the middle-outer frame cylinder body in the S4 is assembled, the relative clearance required to be controlled is not less than 5mm and not more than 8 mm.

5. the process for manufacturing the riprap leveling head according to claim 2, wherein the outer diameter machining of the cylinder body of the outer frame in the step S5 is maximally satisfied as long as 1524-1mm, and the structural strength is ensured.

6. the process of constructing a riprap leveling head as claimed in claim 2, wherein: the outer frame guide rail in S6.1 meets the following requirements: open gear 2070^+0.2 ₀mm, center to center spacing 1000^+0.2 ₀mm, and the flatness of the guide rail is controlled within 0.1 mm.

7. The process of constructing a riprap leveling head as claimed in claim 2, wherein: in S6.2, the roughness of the upper plane of the flange in the outer frame is 12.5, and the shearing-resistant step is 5^+0.2 ₀mm, the outer diameter tolerance of the shear step of the flange is h9, and the thickness of the flange plate is not less than 53 mm; the opening of the oil cylinder is 2760 +/-0.1 mm, and the integral flatness of the four pairs of oil cylinders is controlled within 2 mm.

Technical Field

the invention relates to the technical field of ocean engineering and ship construction, in particular to a riprap leveling head and a construction process thereof.

Background

The hong Zhu and Australia bridge is a super engineering which attracts attention in the world, wherein the submarine tunnel engineering has the highest technical difficulty, and the great amount of world is created. Compared with two immersed tube tunnel projects of Danish Erle straits and Korean kettle mountains which also adopt the prior paving method process, the rubble foundation bed of the ocean bottom tunnel of the Hongzhao Australian bridge adopts the prior paving method process, the total workload of rubble throwing and leveling is large, and the total amount of rubble paving is 36.3 ten thousand meters for carrying out the year; the leveling gradient of the gravel foundation bed is changed greatly, and 29 gradients are counted; the water depth is greatly changed, and the water depth of the foundation bed is 8-45 m; the leveling process and the leveling precision of the immersed tube foundation have very high requirements, and the underwater elevation control difficulty is high.

The self-elevating gravel leveling ship is specially designed and built for the implementation of the project and comprises a main ship body, 4 self-elevating pile legs (comprising a hydraulic system), a movable trolley, a follow-up belt conveyor, a fixed belt conveyor, a feeding hopper, a gravel throwing pipe, a gravel throwing leveling head and the like.

As one of the key parts of the self-elevating gravel leveling ship, the construction of the riprap leveling head has a plurality of difficulties:

1. the main size of the stone-throwing leveling head structure is small, the structure is dense, the assembly precision requirement is high, and in order to guarantee the final installation precision, the size welding and the assembly precision required by all stages of processes are particularly high.

2. The structure welds the space for a short time, and the welding volume is big, produces great stress and deformation easily, needs strict welding according to welding order and corresponding WPS requirement, chooses for use proper current-voltage, controls welding speed well.

3. controlling welding deformation: the tool and the jig frame are fully utilized, the reverse deformation is preset, the welding shrinkage allowance is added and released, and a reasonable welding sequence is formulated.

4. And (3) stress release: after the manufacturing is finished, residual stress is eliminated in a mode of vibration stress relief.

Therefore, the development of a construction technology of the stone-throwing leveling head of the self-elevating gravel leveling ship, which has the advantages of good construction environment, convenient welding, high manufacturing precision and capability of improving the welding quality and the working efficiency, is imperative. Through examination of relevant documents, the technical scheme which is the same as or similar to the technical scheme of the invention is not found.

Disclosure of Invention

the invention aims to solve the technical problem of providing a stone throwing flat head which has good construction environment, is convenient to weld, has high closure precision and can improve the welding quality and the working efficiency and a construction process thereof.

In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a whole crew cut of riprap which innovation point lies in: the device comprises a leveling scraper, a leveling oil cylinder, an inner frame module, an outer frame module and a sonar module; the leveling scraper is arranged at the bottom end of the inner frame module and connected with the inner frame module, the outer frame module is nested outside the inner frame module, and the inner frame module reciprocates along the outer frame module under the driving of a leveling oil cylinder through a pulley guide rail structure;

the inner frame module comprises an inner cylinder body and an inner frame; the inner cylinder body is arranged on the inner frame, and the outer surface of the inner frame is provided with a pulley structure; the outer frame module comprises an outer cylinder and an outer frame; the outer cylinder body is arranged on the outer frame, and a plurality of guide rail structures are arranged on the inner side of the outer frame; the outer cylinder is embedded in the inner cylinder, the inner frame is embedded in the outer frame, the outer cylinder is in guide fit with the inner cylinder, and the pulley structure on the inner frame is matched with the guide rail of the outer frame to drive the inner cylinder under the driving of the leveling oil cylinder; the top end of the outer frame is provided with a lifting lug structure;

The sonar module sets up on the surface of the side of frame.

A stone-throwing leveling head manufacturing process is characterized in that: the concrete construction steps are as follows:

S1: arranging an assembly jig frame: four cylindrical jig frame units are distributed in a rectangular structure, and a jig frame unit is arranged in the center of the jig frame unit in the rectangular structure;

s2: manufacturing a cylinder body in the inner frame and the outer frame: sequentially carrying out blanking, groove opening, edge rolling, longitudinal seam welding and edge-doubling on a plate to realize the manufacture of the cylinder;

s3: cylinder first preassembly: after the cylinder is manufactured, performing inspection, pre-assembling the cylinder according to the requirement of a blueprint after the inspection is qualified, marking out a relative position line according to the actual position to measure the actual assembly gap, and recording;

S4: cylinder preassembly for the second time: welding a part directly welded with the inner and outer frame cylinders and the cylinders into an assembly, performing secondary preassembly according to the requirement of the step S2, measuring the actual assembly gap, and making a record;

S5: processing an outer frame cylinder: according to the recorded data in the step S3, the cylinder in the outer frame is sent to a machining workshop, and the outer circle of the cylinder is locally machined to ensure the assembly gap;

S6: manufacturing an inner frame and an outer frame: participating the inner and outer frame cylinders produced according to the steps S1 to S4 in the manufacture of the inner frame and the outer frame;

s6.1, carrying out integral scribing on the eight guide rails in the outer frame and processing a plane;

and S6.2, carrying out integral scribing machining on the flange in the outer frame and the four groups of oil cylinders.

S7: and (3) integral assembly of the riprap whole flat head: horizontally arranging a leveling scraper on a jig frame, and positioning an inner frame module above the leveling scraper; then the outer frame module is nested on the inner frame module; install the flattening hydro-cylinder on outer frame module, install the leading wheel on inner frame module, install the sonar module on the side of outer frame at last.

furthermore, the diameter of the outer frame cylinder in S2 is 1524 +/-2 mm, the roundness is not more than 2mm, and the straightness is not more than 2mm/m, the diameter of the inner frame cylinder is Ø 1578 +/-2 mm, the roundness is not more than 2mm, and the straightness is not more than 2 mm/m.

Furthermore, the relative clearance required to be controlled when the inner and outer frame cylindrical bodies are assembled in the S4 is not less than 5mm and not more than 8 mm.

further, 1524-1mm are taken in the biggest satisfaction of outer frame cylinder external diameter machining in S5, and guarantee structural strength.

Further, the S6.1 middle and outer frameThe guide rail satisfies: open gear 2070^+0.2 ₀mm, center to center spacing 1000^+0.2 ₀mm, and the flatness of the guide rail is controlled within 0.1 mm.

Further, in S6.2, the roughness of the upper plane of the flange in the outer frame is 12.5, and the shearing-resistant step is 5^+0.2 ₀mm, the outer diameter tolerance of the shear step of the flange is h9, and the thickness of the flange plate is not less than 53 mm; the opening of the oil cylinder is 2760 +/-0.1 mm, and the integral flatness of the four pairs of oil cylinders is controlled within 2 mm.

The invention has the advantages that:

1) The construction of the riprap leveling head is divided into six steps: manufacturing a jig frame, manufacturing an inner frame and an outer frame of a cylinder body, prefabricating a cylinder body assembly, respectively molding the inner frame and the outer frame, machining an outer frame, and finally integrally assembling; in each stage of the construction process of the riprap leveling head, the shrinkage allowance of welding and the reversible deformation are considered, and the assembly is prefabricated strictly, so that the control of the key size of the assembly is enhanced; the sequence of positioning and welding strictly follows: the step-by-step installation is carried out according to the principle of from bottom to top and from inside to outside; the process has the advantages of convenient welding, high folding precision and capability of improving the welding quality and the working efficiency.

drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic view of the overall structure of a riprap trimming head of the invention.

Fig. 2 is a schematic structural diagram of an external frame of a riprap trimming head according to the present invention.

Fig. 3 is a schematic diagram of preassembling an inner cylinder and an outer cylinder of the riprap leveling head of the invention.

Fig. 4 is a jig frame diagram of the present invention.

figure 5 is a view of the positioning of the screed of the present invention.

Fig. 6 is a view showing the mounting and positioning of the inner frame module.

Fig. 7 is an assembly positioning diagram of the outer frame module and the leveling cylinder of the present invention.

fig. 8 is an integral molding diagram of the sonar module of the present invention after installation.

Detailed Description

The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.

A stone-throwing flat head as shown in fig. 1 to 3, which comprises a leveling scraper 1, a leveling oil cylinder 2, an inner frame module 3, an outer frame module 4 and a sonar module 5; leveling scraper blade 1 sets up and links to each other with inner frame module 3 on the bottom of inner frame module 3, outer frame module 4 nestification is in the outside of inner frame module 3, and inner frame module 3 passes through pulley guide rail structure along outer frame module 4 reciprocating motion under the drive of leveling hydro-cylinder 2.

the inner frame module 3 includes an inner cylinder 31 and an inner frame; the inner cylinder body 31 is arranged on the inner frame, and the outer surface of the inner frame is provided with a pulley structure; the outer frame module 4 comprises an outer cylinder 41 and an outer frame; the outer cylinder 41 is arranged on an outer frame, and a plurality of guide rail structures are arranged on the inner side of the outer frame; the outer cylinder 41 is embedded in the inner cylinder 31, the inner frame is embedded in the outer frame, the outer cylinder 41 is in guide fit with the inner cylinder 41, and the pulley structure on the inner frame is matched with the guide rail of the outer frame to drive the inner cylinder 41 under the driving of the leveling cylinder 2; the top end of the outer frame is provided with a lifting lug structure.

Sonar module 5 is provided on the surface of the side of the outer frame.

Fig. 4 to 8 show a construction process of a riprap leveling head, which comprises the following specific steps:

S1: arranging an assembly jig frame: four cylindrical jig frame units are distributed in a rectangular structure, and a jig frame unit is arranged in the center of the jig frame unit in the rectangular structure;

S2, manufacturing a cylinder in an inner frame and an outer frame, namely sequentially performing blanking, groove opening, circle rolling, longitudinal seam welding and circle compounding on plates to manufacture the cylinder, wherein the diameter of the cylinder in the outer frame is Ø 1524 +/-2 mm, the roundness is less than or equal to 2mm, the straightness is less than or equal to 2mm/m, the diameter of the cylinder in the inner frame is 1578 +/-2 mm, the roundness is less than or equal to 2mm, and the straightness is less than or equal to 2 mm/m.

s3: cylinder first preassembly: and after the cylinder is manufactured, performing inspection, pre-assembling the cylinder according to the requirement of a blueprint after the inspection is qualified, marking out a relative position line according to the actual position to measure the actual assembly gap, and making a record.

S4: cylinder preassembly for the second time: welding a part directly welded with the inner and outer frame cylinders and the cylinders into an assembly, performing secondary preassembly according to the requirement of the step S2, measuring the actual assembly gap, and making a record; when the inner and outer frame cylinders are assembled, the relative clearance between the inner and outer frame cylinders is controlled to be not less than 5mm and not more than 8 mm.

and S5, processing the outer frame cylinder, namely conveying the cylinder in the outer frame to a processing workshop according to the recorded data in the step S3, and carrying out local processing on the outer circle of the cylinder to ensure an assembly gap, wherein the processing of the outer frame cylinder outer diameter meets the requirement of 1524-1mm to the maximum extent, and the structural strength is ensured.

s6: manufacturing an inner frame and an outer frame: participating the inner and outer frame cylinders produced according to the steps S1 to S4 in the manufacture of the inner frame and the outer frame;

S6.1, carrying out integral scribing on the eight guide rails in the outer frame and processing a plane; the outer frame guide rail satisfies: open gear 2070^+0.2 ₀mm, center to center spacing 1000^+0.2 ₀mm, and the flatness of the guide rail is controlled within 0.1 mm.

S6.2, integrally marking machining is carried out on the flange in the outer frame and the four groups of oil cylinders; the roughness of the upper plane of the flange in the outer frame is 12.5, and the shearing step is 5^+0.2 ₀mm, the outer diameter tolerance of the shear step of the flange is h9, and the thickness of the flange plate is not less than 53 mm; the opening of the oil cylinder is 2760 +/-0.1 mm, and the integral flatness of the four pairs of oil cylinders is controlled within 2 mm.

S7: and (3) integral assembly of the riprap whole flat head: horizontally arranging a leveling scraper on a jig frame, and positioning an inner frame module above the leveling scraper; then the outer frame module is nested on the inner frame module; install the flattening hydro-cylinder on outer frame module, install the leading wheel on inner frame module, install the sonar module on the side of outer frame at last.

it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.