CN114719082A - Pipe replacing machine - Google Patents
Pipe replacing machine Download PDFInfo
- Publication number
- CN114719082A CN114719082A CN202110005945.2A CN202110005945A CN114719082A CN 114719082 A CN114719082 A CN 114719082A CN 202110005945 A CN202110005945 A CN 202110005945A CN 114719082 A CN114719082 A CN 114719082A
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- China
- Prior art keywords
- machine body
- wall
- pipe joint
- cutter head
- old pipe
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- 230000007246 mechanism Effects 0.000 claims abstract description 93
- 239000002689 soil Substances 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 239000002002 slurry Substances 0.000 claims description 30
- 239000002893 slag Substances 0.000 claims description 28
- 238000007667 floating Methods 0.000 claims description 26
- 238000005096 rolling process Methods 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 239000003638 chemical reducing agent Substances 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims description 16
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000005201 scrubbing Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The application relates to a tube replacing machine, and belongs to the technical field of engineering machinery. The tube replacing machine comprises a machine body, a cutter head, a rotary driving mechanism and a jacking mechanism. The machine body and the cutter head are both provided with hollow structures, and the hollow structures are used for old pipe joints to penetrate through. The cutter head is positioned at the front end of the machine body and is used for crushing the soil body on the front tunnel face. The rotary driving mechanism is located in the machine body and is in transmission connection with the cutter head and used for driving the cutter head to rotate. And the jacking mechanism is used for jacking the new pipe joint and pushing the machine body to advance through the new pipe joint. By adopting the pipe replacing machine provided by the embodiment of the application, the old pipe joint with the smaller pipe diameter under the ground can be replaced by the new pipe joint with the larger pipe diameter without excavating the ground on a large scale.
Description
Technical Field
The application relates to the technical field of engineering machinery, in particular to a pipe replacing machine.
Background
Along with the rapid development of cities, the diameters of pipelines such as sewage discharge, drainage, electric power and communication laid underground originally are small, the capacity can not meet the requirement, and meanwhile, the pipelines need to be replaced along with the fact that the service life of part of in-service pipelines reaches the design life.
In the related art, an excavation replacement method is generally adopted to replace an old pipe section with a smaller pipe diameter with a new pipe section with a larger pipe diameter.
However, at present, urban ground is densely built, and some pipelines are located in urban traffic, pedestrian flow and densely built areas, so that an excavation replacement method cannot be adopted.
Disclosure of Invention
The embodiment of the application provides a tube changing machine, can solve the technical problem that exists among the correlation technique, tube changing machine's technical scheme as follows:
the embodiment of the application provides a pipe exchanger, which comprises an engine body, a cutter head, a rotary driving mechanism and a jacking mechanism;
the machine body and the cutter head are both provided with hollow structures, and the hollow structures are used for old pipe joints to penetrate through;
the cutter head is positioned at the front end of the machine body and is used for crushing soil on the front tunnel face;
the rotary driving mechanism is positioned in the machine body, is in transmission connection with the cutter head and is used for driving the cutter head to rotate;
and the jacking mechanism is used for jacking the new pipe joint and pushing the machine body to advance through the new pipe joint.
In a possible implementation manner, the rear end of the cutter head is provided with a conical outer wall, and the outer diameter of the conical outer wall is gradually reduced along the direction from the front end to the rear end of the machine body;
the front end of the machine body is provided with a conical inner wall, and the inner diameter of the conical inner wall is gradually reduced along the direction from the front end to the rear end of the machine body;
the conical outer wall is opposite to the conical inner wall and is provided with a gap for crushing soil entering the gap.
In one possible implementation manner, the pipe exchanger further comprises a slurry supply mechanism and a slag discharge mechanism;
the mud supply mechanism is positioned in the machine body, one end of a mud supply pipeline of the mud supply mechanism is positioned on the ground, and the other end of the mud supply pipeline of the mud supply mechanism is communicated with a space between the conical outer wall and the conical inner wall;
the slag discharging mechanism is positioned in the machine body, one end of a slag discharging pipeline of the slag discharging mechanism is positioned on the ground, and the other end of the slag discharging pipeline is communicated with the space between the conical outer wall and the conical inner wall.
In one possible implementation, the rotary drive mechanism includes a drive motor, a speed reducer, and a rolling bearing;
an output shaft of the driving motor is fixedly connected with an input shaft of the speed reducer, and the output shaft of the speed reducer is meshed with a moving coil of the rolling bearing;
the fixed ring of the rolling bearing is fixedly connected with the machine body, and the moving ring of the rolling bearing is fixedly connected with the rear end of the cutter head.
In one possible implementation, the pipe exchanger further comprises a muck removal member;
the muck removing piece is fixed on one side of the cutter head, which faces the old pipe joint;
the muck removing piece is of an annular structure and is used for removing muck attached to the outer wall of the old pipe joint.
In one possible embodiment, the side of the slag removal element facing the old pipe section has an alloy wear block.
In one possible implementation, the pipe exchanger further includes a plurality of floating blades;
the plurality of floating type shoveling knives are fixed on one side of the cutter head opposite to the old pipe joint and positioned behind the muck removing piece, and the plurality of floating type shoveling knives are distributed along the circumferential direction of the cutter head;
and the floating scraper knife is in contact with the outer wall of the old pipe joint and is used for cleaning the outer wall of the old pipe joint.
In one possible implementation manner, the pipe exchanger further comprises a steel wire row brush;
the steel wire row brush is fixed in the machine body and is positioned behind the floating type scraper knife;
the steel wire row brush is provided with an annular structure and is attached to the outer wall of the old pipe joint to prevent slurry from flowing into the rear of the steel wire row brush.
In one possible implementation, the wire brush includes a mounting ring, a brush row and a positioning ring;
the mounting ring has an annular structure and is fixedly connected with the machine body;
the row brush is of an annular structure and is fixed on one side of the mounting ring opposite to the old pipe joint, and the row brush is used for contacting with the outer wall of the old pipe joint;
the holding ring has an annular structure and is fixed on one side of the mounting ring opposite to the old pipe joint, and the holding ring supports the row brush so that the row brush is tightly attached to the outer wall of the old pipe joint.
In one possible implementation, the tube changer further comprises at least one tray;
the at least one tray is fixedly connected with the machine body and is positioned in the machine body;
and one side of the tray opposite to the old pipe joint is provided with an arc-shaped surface matched with the old pipe joint and used for supporting the old pipe joint.
The technical scheme provided by the embodiment of the application at least comprises the following beneficial effects:
the embodiment of the application provides a pipe exchanger, which comprises a machine body, a cutter head, a rotary driving mechanism and a jacking mechanism, wherein the jacking mechanism can be positioned in an originating well. When the pipe replacing machine is used for replacing pipes, the cutter head rotates to crush soil on the face in front, and the jacking mechanism pushes the machine body to advance through a new pipe joint. In the advancing process of the pipe replacing machine, as the machine body is gradually far away from the jacking mechanism, pipe joints of new pipe joints between the jacking mechanism and the machine body are gradually increased, so that the connection of the new pipe joints is completed.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. In the drawings:
FIG. 1 is a schematic view of a tube changer according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of a tube changer shown in an embodiment of the present application;
FIG. 3 is a schematic view of a crushing mechanism according to an embodiment of the present disclosure;
FIG. 4 is a schematic view of a rotary drive mechanism shown in an embodiment of the present application;
fig. 5 is a schematic view of a wire brush according to an embodiment of the present disclosure.
Description of the drawings
1. A body 11, a conical inner wall;
2. a cutter head 21 and a conical outer wall;
3. the device comprises a rotary driving mechanism 31, a driving motor 32, a speed reducer 33, a rolling bearing 34, a connecting ring 331, a moving coil 332 and a fixed coil;
4. a jacking mechanism;
5. a slurry supply mechanism;
6. a slag discharge mechanism;
7. a muck removal member;
8. a floating type shovel blade;
9. a steel wire row brush 91, a mounting ring 92, a row brush 93 and a positioning ring;
10. a tray;
a. old pipe joints;
b. and (5) new pipe joints.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The embodiment of the application provides a pipe exchanger, as shown in fig. 1 and fig. 2, the pipe exchanger includes a machine body 1, a cutter head 2, a rotary driving mechanism 3, and a jacking mechanism 4. The machine body 1 and the cutter head 2 are both provided with hollow structures, and the hollow structures are used for old pipe joints to penetrate through. The cutter head 2 is positioned at the front end of the machine body 1 and is used for crushing soil on the front tunnel face. The rotary driving mechanism 3 is located inside the machine body 1, is in transmission connection with the cutter head 2, and is used for driving the cutter head 2 to rotate. The jacking mechanism 4 is used for jacking the new pipe joint and pushing the machine body 1 to advance through the new pipe joint.
The machine body 1 is used for installing other parts of the pipe exchanger, blocking the inflow of underground water and protecting internal parts and workers working in the internal parts. The machine body 1 can be composed of 2-3 sections, and waterproof sealing is arranged between every two sections. The machine body 1 can be made by welding thick steel plate coils. The machine body 1 can be in a cylindrical structure, and the outer diameter of the machine body can be 2240 mm.
The cutter head 2 is used for crushing the soil body on the front face through rotation. The cutterhead 2 may include a cutterhead body and cutters located on the cutterhead body. The cutterhead 2 may also be referred to as a cutter, a cutterhead cutter, etc. The cutter head 2 can be detachably connected with the machine body 1, so that different cutter heads 2 can be replaced under the condition of different geology. Illustratively, the cutterhead 2 may include a soft soil cutterhead and a rock cutterhead, and the effective area of the cutterhead 2 may be 3.7 square meters. The cutter head 2 and the machine body 1 can share a central axis.
The rotary driving mechanism 3 is used for driving the cutter head 2 to rotate and providing power for the cutter head 2.
The jacking mechanism 4 is used for jacking the new pipe joint and pushing the machine body 1 to advance through the new pipe joint. The jacking mechanism 4 is arranged in the initial foundation pit and continuously pushes the machine body 1 to advance. In the process of pushing the machine body 1 to advance, when the jacking mechanism 4 extends to the limit position, the jacking mechanism 4 cannot push the machine body 1 to advance through the existing new pipe joint, at the moment, the jacking mechanism 4 can be controlled to retract, a new pipe joint is inserted between the machine body 1 and the jacking mechanism 4, and then the jacking mechanism 4 continues to push the machine body 1 to advance. By repeating the above process, the number of new pipe joints between the jacking mechanism 4 and the machine body 1 is increased. It should be noted that the existing jacking device may be used as the jacking mechanism 4, and the specific type of the jacking mechanism 4 is not limited in the embodiment of the present application.
The old pipe section a is a pipe section which is buried below the ground and is to be replaced, and the new pipe section b is a pipe section which needs to be buried below the ground and is used for replacing the old pipe section a. The inner diameter of the new pipe section b is larger than the outer diameter of the old pipe section a. Illustratively, the old pipe section a has an inner diameter of 600mm, an outer diameter of 720mm and a thickness of 60 mm. The inner diameter of the new pipe joint b is 1800mm, the outer diameter is 2160mm, and the thickness is 180 mm.
According to the scheme shown in the embodiment of the application, when the pipe exchanger is used for pipe exchanging operation, under the driving of the rotary driving mechanism 3, the cutter head 2 rotates to crush soil on the front tunnel face, and the jacking mechanism 4 pushes the machine body 1 to advance through the new pipe joint b. In the advancing process of the tube replacing machine, as the machine body 1 is gradually far away from the jacking mechanism 4, new tube sections b are continuously inserted between the jacking mechanism 4 and the machine body 1, and the number of the new tube sections b between the machine body 1 and the jacking mechanism 4 is gradually increased until the new tube sections b are spliced.
By adopting the pipe replacing machine provided by the embodiment of the application, old pipelines which are originally paved underground and have small diameters, such as sewage discharge, drainage, electric power and communication, can be replaced by new pipelines with larger diameters without excavation, and the pipe replacing machine has a good application value in urban traffic, pedestrian flow and dense building areas.
In one possible implementation, as shown in fig. 3, the rear end of the cutter head 2 has a tapered outer wall 21, and the outer diameter of the tapered outer wall 21 is gradually reduced in the direction from the front end to the rear end of the machine body 1. The front end of the machine body 1 has a tapered inner wall 11, and the inner diameter of the tapered inner wall 11 is gradually reduced along the direction from the front end to the rear end of the machine body 1. The conical outer wall 21 is opposite to the conical inner wall 11 and has a gap for breaking up soil mass entering the gap.
In the scheme shown in the embodiment of the application, as shown in fig. 3, the rear end of the cutter head 2 is set to be the tapered outer wall 21, and the front end of the machine body 1 is set to be the tapered inner wall 11 matched with the tapered outer wall 21, so that the tapered outer wall 21 and the tapered inner wall 11 are matched to form the crushing mechanism. The soil body that this crushing mechanism can cut blade disc 2 is broken for the second time.
The crushing mechanism and the cutter head 2 work synchronously, and when the cutter head 2 rotates, the cutter head 2 can cut soil on the front tunnel face. And because the conical outer wall 21 is positioned on the cutter head 2, relative rotation can occur between the conical outer wall 21 and the conical inner wall 11, so that the conical outer wall 21 and the conical inner wall 11 can secondarily crush soil entering a gap.
In order to make the crushing performance of the crushing mechanism better, wear-resistant metal can be arranged on the conical inner wall 11 and the conical outer wall 21.
In one possible implementation, as shown in fig. 2, the tube changer further includes a slurry supply mechanism 5 and a slag discharge mechanism 6. The slurry supply mechanism 5 is positioned inside the machine body 1, one end of a slurry supply pipeline of the slurry supply mechanism 5 is positioned on the ground, and the other end of the slurry supply pipeline is communicated with a space between the conical outer wall 21 and the conical inner wall 11. The slag discharging mechanism 6 is positioned in the machine body 1, one end of a slag discharging pipeline of the slag discharging mechanism 6 is positioned on the ground, and the other end of the slag discharging pipeline is communicated with a space between the conical outer wall 21 and the conical inner wall 11.
The slurry supply mechanism 5 is used for inputting slurry, and the residue discharge mechanism 6 is used for discharging residue soil mixed in the slurry to the ground.
In the embodiment of the present application, as shown in fig. 2, an end of the slurry supply pipe 51 of the slurry supply mechanism 5 communicating with the space between the tapered outer wall 21 and the tapered inner wall 11 may be located above the machine body 1. One end of the slag discharge pipe 61 of the slag discharge mechanism 6 communicating with the space between the tapered outer wall 21 and the tapered inner wall 11 may be located below the machine body 1.
By arranging the slurry supply mechanism 5 and the slag discharging mechanism 6 in the machine body 1, the pipe replacing machine can mix the cut slag soil and the slurry and can discharge the slurry to the ground in time.
In one possible implementation, as shown in fig. 4, the rotary drive mechanism 3 includes a drive motor 31, a speed reducer 32, and a rolling bearing 33. An output shaft of the drive motor 31 is fixedly connected to an input shaft of the speed reducer 32, and an output shaft of the speed reducer 32 is engaged with the moving coil 331 of the rolling bearing 33. The fixed ring 332 of the rolling bearing 33 is fixedly connected with the machine body 1, and the moving ring 331 of the rolling bearing 33 is fixedly connected with the rear end of the cutter head 2.
Wherein, the output shaft of the speed reducer 32 can be a gear shaft, and the gear shaft is meshed with the outer wall of the moving coil 331; alternatively, a gear may be fixed to the output shaft of the speed reducer 32, and the gear may be engaged with the outer wall of the moving coil 331. The outer wall of the moving coil 331 has a gear structure.
The rolling bearing 33 may be a hollow rotary support bearing, and the rolling bearing 33 and the machine body 1 share a central axis.
The rolling bearing 33 and the cutter head 2 can be fixedly connected through a connecting ring 34, for example, as shown in fig. 4, the connecting ring 34 is located between the rolling bearing 33 and the cutter head 2, the moving ring 331 of the rolling bearing 33 is fixedly connected with the connecting ring 34 through a screw, and the connecting ring 34 is fixedly connected with the rear end of the cutter head 2 through a screw.
According to the scheme shown in the embodiment of the application, when the rotary driving mechanism 3 works, the driving motor 31 drives the input shaft of the speed reducer 32 to rotate, the input shaft of the speed reducer 32 drives the output shaft of the speed reducer 32 to rotate, the output shaft of the speed reducer 32 drives the moving coil 331 to rotate around the fixed coil 332, and the moving coil 331 drives the cutter head 2 to rotate.
In addition, the number and power of the rotation driving mechanisms 3 are not limited in the embodiment of the present application, and for example, 6 sets of rotation driving mechanisms 3 are provided inside the machine body 1, and the power of the driving motor 31 in each set of rotation driving mechanisms 3 is 30 kw.
In one possible implementation, as shown in fig. 3, the pipe changer further comprises a slag removing member 7. The muck removal piece 7 is fixed on the side of the cutter head 2 facing the old pipe joint. The residue soil removing member 7 has an annular structure and is used for removing residue soil attached to the outer wall of the old pipe joint.
Wherein, the muck removing piece 7 is positioned in the central hollow part of the cutter head 2 and is of an annular structure. The clearance between the slag removing member 7 and the old pipe joint can be 30 mm.
According to the scheme shown in the embodiment of the application, the muck removing piece 7 is used for primarily removing muck attached to the old pipe joint a. In a possible realization mode, the side of the slag removing piece 7 facing the old pipe section a is provided with an alloy wear-resistant block, so that the slag attached to the old pipe section a can be removed better.
In one possible implementation, as shown in fig. 2, the pipe changer further comprises a plurality of floating blades 8. A plurality of floating spiller 8 are fixed in the relative one side of blade disc 2 and old pipe coupling, and are located the rear of dregs clearance spare 7, and a plurality of floating spiller 8 distribute along the circumference of blade disc 2. The floating type scraper knife 8 is contacted with the outer wall of the old pipe joint and is used for cleaning the outer wall of the old pipe joint.
The floating blade 8 is a blade that can float in the radial direction of the machine body 1. The floating type scraper knife 8 can have a prestress scraper knife structure, so that the floating type scraper knife 8 is in tight contact with the outer wall of the old pipe joint a, and the extending length of the floating type scraper knife 8 can be automatically adjusted within a certain range according to the shape of the outer wall of the old pipe joint a. The floating type scraper knife 8 can be provided with a high-pressure cleaning pipeline and a nozzle besides a cutter part, so that the waste soil on the old pipe joint can be cleaned more conveniently. The embodiment of the present application does not limit the specific structure of the floating blade 8.
According to the scheme shown in the embodiment of the application, the floating type scraper knife 8 is used for further removing residual soil on the old pipe joint a entering the main body 1 and determining that the old pipe joint a entering the machine body 1 is cleaner.
In one possible implementation, as shown in fig. 5, the tube changer further comprises a wire brush bank 9. The steel wire row brush 9 is fixed in the machine body 1 and is positioned behind the floating type scraper knife 8. The wire brush 9 has a ring structure for fitting the outer wall of the old pipe joint to block the slurry from flowing into the rear of the wire brush 9.
The scheme shown in the embodiment of the application can prevent mud from entering the rear of the steel wire row brush 9 through the gap between the machine body 1 and the old pipe joint a by arranging the steel wire row brush 9, and influence on subsequent construction is avoided. The wire brush 9 can be coaxial with the machine body 1.
In one possible implementation, the wire brush bank 9 comprises a mounting ring 91, a row brush 92 and a positioning ring 93. The mounting ring 91 has a ring structure and is fixedly connected to the machine body 1. The row brush 92 has a ring structure and is fixed on the side of the mounting ring 91 opposite to the old pipe joint, and the row brush 92 is used for contacting with the outer wall of the old pipe joint. The positioning ring 93 has a ring structure and is fixed on the side of the mounting ring 91 opposite to the old pipe joint, and the positioning ring 93 supports the scrubbing brush 92 so that the scrubbing brush 92 is attached to the outer wall of the old pipe joint.
In the embodiment of the present application, as shown in fig. 3, the number of the row brushes 92 may be 3, the row brushes 92 may be formed by press welding one by one along the circumferential direction, and a positioning ring 93 is installed behind the row brushes 92 so that the row brushes 92 can maintain a certain angle and pressing force. When the steel wire row brush 9 is used, sealing grease needs to be continuously injected into a cavity between the row brush 92 and the outer wall of the old pipe joint.
In a possible implementation, as shown in fig. 2, the tube changer further comprises at least one tray 10. At least one tray 10 is fixedly connected with the machine body 1 and is positioned inside the machine body 1. The side of the tray 10 opposite the old pipe section has an arcuate surface matching the old pipe section for supporting the old pipe section.
Wherein, the tray 10 can be made of an arc plate which is consistent with the radian of the outer wall of the old pipe joint. The number of the trays 10 is not limited in the embodiment of the present application, and the number of the trays 10 is 3 by way of example. The bottom of the tray 10 can be connected with a support rod, and the other end of the support rod is fixedly connected with the inner wall of the machine body 1.
According to the scheme shown in the embodiment of the application, the tray 10 used for supporting the old pipe joint is arranged inside the pipe replacing machine, so that the old pipe joint can be restrained from advancing along the specified direction, the old pipe joint is prevented from rolling down or generating large deviation, and the old pipe joint can be kept at the central position of the pipe replacing machine.
In the following, an exemplary description is given of a tube changer provided in the embodiments of the present application:
the machine body 1 is composed of 2-3 sections and is made by welding thick steel plate coils, and waterproof seals are arranged between every two sections.
The cutter head 2 is positioned at the front part of the machine body 1, a cutter on the cutter head 2 can be replaced by a soft soil or rock cutter according to the geology, a crushing mechanism is formed between the rear end of the cutter head 2 and the front end of the machine body 1, and the cutter head 2 rotates to perform secondary crushing.
The rotation driving mechanism 3 may include a driving motor 31, a speed reducer 32, and a rolling bearing 33. It should be noted that the drive motor 31 and the speed reducer 32 in the rotary drive mechanism 3 may be 4-6 sets, for example, 6 sets, and the power of the drive motor 31 may be 30 kw.
The residue soil removing piece 7 is positioned in the central hollow part of the cutter head 2 and is of an annular structure, and the gap between the wear-resistant alloy block welded on the surface and the old pipe joint is 30 mm.
The floating scraper knife 8 is a prestressed elastic scraper knife structure, the clearance between the floating scraper knife and the old pipe joint can be automatically adjusted within a certain range according to the shape of the old pipe joint, and a high-pressure cleaning pipeline and a nozzle are attached to the floating scraper knife to remove the dregs on the old pipe joint.
The steel wire row brush 9 is of a 3-channel annular steel wire sealing brush structure, is formed by compressing and welding the steel wire sealing brushes along the circumference by one block, and is provided with a positioning ring 93 at the back, so that the row brush 92 can keep a certain angle and pressing force, and sealing grease needs to be continuously injected into a cavity when the steel wire row brush is used.
The slurry supply mechanism 5 and the slag discharging mechanism 6 are arranged at the bottom of the machine body 1 and consist of a slurry discharging slurry pump, slurry inlet and discharge pipelines and a valve bank, and the valve bank is used for controlling the slurry circulation mode. Illustratively, the slurry supply mechanism 5 and the slag discharge mechanism 6 can be discharged by a small-sized special slurry pump with a flow rate of 150m3The lifting height is 30m, the pipe diameter is 65mm, and the jacking speed of the pipe exchanger is 3 cm/min.
The last section of the machine body 1 and the new pipe section adopt a socket joint type structure and are provided with waterproof sealing.
In addition, the shell of the central inner wall of the machine body 1, the steel wire row brush 9 and the tray 10 together form an old pipe guide mechanism for restraining an old pipeline. The tray 10 is made of an arc plate with the same radian as the old pipe joint.
The middle of the cutter head 2 to the rear part of the machine body 1 of the pipe replacing machine provided by the embodiment of the application is of a hollow structure, so that the old pipe joint can be 'eaten' into the pipe replacing machine. The mud supply mechanism 5 uses a ground mud pump to send mud into the cutter head 2, peripheral soil is cut along with the rotation of the cutter head 2, the cut soil and the mud form mixed liquid, the mixed liquid enters the crushing mechanism, and then the residue soil is discharged out of the machine body 1 through the residue discharge mechanism 6. The machine body 1 advances by adopting a mode that the jacking mechanism 4 jacks in the new pipe joint, and as the machine body 1 advances continuously, the old pipe joint moves backwards continuously along the guide mechanism in the machine body, and is just like being eaten into the belly, and when the old pipe joint reaches the tunnel constructed by the new pipe joint, the old pipe joint is dismantled section by section.
In the embodiments of the present application, the term "plurality" means two or more, unless otherwise specifically defined.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The pipe exchanger is characterized by comprising a machine body (1), a cutter head (2), a rotary driving mechanism (3) and a jacking mechanism (4);
the machine body (1) and the cutter head (2) are both provided with hollow structures, and the hollow structures are used for old pipe joints to penetrate through;
the cutter head (2) is positioned at the front end of the machine body (1) and is used for crushing soil on the front tunnel face;
the rotary driving mechanism (3) is positioned in the machine body (1), is in transmission connection with the cutter head (2) and is used for driving the cutter head (2) to rotate;
the jacking mechanism (4) is used for jacking a new pipe joint and pushing the machine body (1) to advance through the new pipe joint.
2. The machine according to claim 1, characterized in that the rear end of the cutterhead (2) has a tapered outer wall (21), and the outer diameter of the tapered outer wall (21) is gradually reduced along the direction from the front end to the rear end of the machine body (1);
the front end of the machine body (1) is provided with a conical inner wall (11), and the inner diameter of the conical inner wall (11) is gradually reduced along the direction from the front end to the rear end of the machine body (1);
the conical outer wall (21) is opposite to the conical inner wall (11) and is provided with a gap for crushing soil entering the gap.
3. The machine according to claim 1, wherein the rotary drive mechanism (3) comprises a drive motor (31), a reducer (32) and a rolling bearing (33);
an output shaft of the driving motor (31) is fixedly connected with an input shaft of the speed reducer (32), and an output shaft of the speed reducer (32) is meshed with a moving coil (331) of the rolling bearing (33);
the fixed ring (332) of the rolling bearing (33) is fixedly connected with the machine body (1), and the moving ring (331) of the rolling bearing (33) is fixedly connected with the rear end of the cutter head (2).
4. A tube exchanger as claimed in any one of claims 1 to 3, further comprising a slurry feed mechanism (5) and a slag discharge mechanism (6);
the slurry supply mechanism (5) is positioned in the machine body (1), one end of a slurry supply pipeline of the slurry supply mechanism (5) is positioned on the ground, and the other end of the slurry supply pipeline is communicated with a space between the conical outer wall (21) and the conical inner wall (11);
the slag discharging mechanism (6) is positioned in the machine body (1), one end of a slag discharging pipeline of the slag discharging mechanism (6) is positioned on the ground, and the other end of the slag discharging pipeline is communicated with the space between the conical outer wall (21) and the conical inner wall (11).
5. The tube exchanger according to any one of claims 1 to 3, further comprising a muck removal member (7);
the muck removing piece (7) is fixed on one side, facing the old pipe joint, of the cutter head (2);
the residue soil removing piece (7) is of an annular structure and is used for removing residue soil attached to the outer wall of the old pipe joint.
6. A tube changer according to claim 5, characterized in that the side of the slag removing element (7) facing the old tube section has an alloy wear block.
7. The pipe changer of claim 5, further comprising a plurality of floating blades (8);
the floating shoveling knives (8) are fixed on one side of the cutter head (2) opposite to the old pipe joint and are positioned behind the residue soil removing piece (7), and the floating shoveling knives (8) are distributed along the circumferential direction of the cutter head (2);
the floating type scraper knife (8) is in contact with the outer wall of the old pipe joint and is used for cleaning the outer wall of the old pipe joint.
8. A tube changer according to claim 7, characterized in that the tube changer further comprises a wire row brush (9);
the steel wire row brush (9) is fixed inside the machine body (1) and is positioned behind the floating type scraper knife (8);
the steel wire row brush (9) is of an annular structure and is attached to the outer wall of the old pipe joint to prevent slurry from flowing into the rear of the steel wire row brush (9).
9. The tube changer according to claim 8, characterized in that the wire row brush (9) comprises a mounting ring (91), a row brush (92) and a positioning ring (93);
the mounting ring (91) is of an annular structure and is fixedly connected with the machine body (1);
the row brush (92) is of an annular structure and is fixed on one side, opposite to the old pipe joint, of the mounting ring (91), and the row brush (92) is used for being in contact with the outer wall of the old pipe joint;
holding ring (93) have loop configuration, and fix collar (91) with the relative one side of old tube coupling, holding ring (93) support arrange brush (92), so that arrange brush (92) paste tightly the outer wall of old tube coupling.
10. A tube exchanger as claimed in any one of claims 1 to 3, characterized in that it further comprises at least one tray (10);
the at least one tray (10) is fixedly connected with the machine body (1) and is positioned inside the machine body (1);
the side of the tray (10) opposite to the old pipe joint is provided with an arc-shaped surface matched with the old pipe joint and used for supporting the old pipe joint.
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| CN202110005945.2A CN114719082B (en) | 2021-01-05 | 2021-01-05 | Tube changing machine |
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| CN202110005945.2A CN114719082B (en) | 2021-01-05 | 2021-01-05 | Tube changing machine |
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