CN114719082B - Tube changing machine - Google Patents
Tube changing machine Download PDFInfo
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- CN114719082B CN114719082B CN202110005945.2A CN202110005945A CN114719082B CN 114719082 B CN114719082 B CN 114719082B CN 202110005945 A CN202110005945 A CN 202110005945A CN 114719082 B CN114719082 B CN 114719082B
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- Prior art keywords
- machine body
- wall
- pipe joint
- old pipe
- cutterhead
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- 230000007246 mechanism Effects 0.000 claims abstract description 92
- 239000002689 soil Substances 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 239000002893 slag Substances 0.000 claims description 37
- 238000007667 floating Methods 0.000 claims description 26
- 238000005096 rolling process Methods 0.000 claims description 20
- 238000007599 discharging Methods 0.000 claims description 19
- 239000003638 chemical reducing agent Substances 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 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
- 238000009412 basement excavation Methods 0.000 abstract description 4
- 239000002002 slurry Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000005299 abrasion Methods 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
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The application relates to a pipe changing machine, and belongs to the technical field of engineering machinery. The pipe changing machine comprises a machine body, a cutter head, a rotary driving mechanism and a jacking mechanism. The machine body and the cutterhead are both provided with hollow structures, and the hollow structures are used for passing through old pipe joints. The cutter head is positioned at the front end of the machine body and is used for crushing the soil body of the front face. The rotary driving mechanism is positioned in the machine body, is in transmission connection with the cutterhead and is used for driving the cutterhead to rotate. 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 changing machine provided by the embodiment of the application, the old pipe joint with smaller pipe diameter below the ground can be replaced by the new pipe joint with larger pipe diameter without large-scale excavation of the ground.
Description
Technical Field
The application relates to the technical field of engineering machinery, in particular to a pipe changing machine.
Background
With the rapid development of cities, the diameter of pipelines such as sewage, drainage, electric power, communication and the like originally paved underground is smaller, the capacity cannot meet the requirements, and meanwhile, the pipelines need to be replaced along with the service life of part of the pipelines in service reaching the design years.
In the related art, when an old pipe section with a smaller pipe diameter is replaced by a new pipe section with a larger pipe diameter, an excavation replacement method is generally adopted.
However, the current urban ground has dense buildings, and some pipelines are positioned in urban traffic, people flow and building dense areas, so that the excavation replacement method cannot be adopted.
Disclosure of Invention
The embodiment of the application provides a tube changing machine, which can solve the technical problems in the related art, and the technical scheme of the tube changing machine is as follows:
The embodiment of the application provides a pipe changing machine which comprises a machine body, a cutter head, a rotary driving mechanism and a jacking mechanism;
The machine body and the cutterhead are both provided with hollow structures, and the hollow structures are used for passing through old pipe joints;
The cutter head is positioned at the front end of the machine body and is used for crushing the soil body of the front face;
The rotary driving mechanism is positioned in the machine body, is in transmission connection with the cutterhead and is used for driving the cutterhead to rotate;
The jacking mechanism is used for jacking the new pipe joint and pushing the machine body to advance through the new pipe joint.
In one possible implementation, the rear end of the cutterhead has a conical outer wall, and the outer diameter of the conical outer wall gradually decreases 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 gradually decreases 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 provided with a gap for crushing soil bodies entering the gap.
In one possible implementation, the pipe changing machine further comprises a mud 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 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;
the output shaft of the driving motor is fixedly connected with the input shaft of the speed reducer, and the output shaft of the speed reducer is meshed with the 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 cutterhead.
In one possible implementation, the tube changer further comprises a residue soil remover;
The dregs removing part is fixed on one side of the cutterhead facing the old pipe joint;
the slag soil removing member is provided with an annular structure and is used for removing slag soil attached to the outer wall of the old pipe joint.
In one possible implementation, the side of the clinker removal member facing the old pipe joint has an alloy wear block.
In one possible implementation, the tube changer further comprises a plurality of floating blades;
The plurality of floating shovel blades are fixed on one side of the cutterhead opposite to the old pipe joint and are positioned behind the dregs removing piece, and the plurality of floating shovel blades are distributed along the circumferential direction of the cutterhead;
the floating shovel blade is contacted 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, the tube changer further comprises a wire row brush;
The steel wire row brush is fixed in the machine body and is positioned behind the floating shovel blade;
the steel wire row brush is provided with an annular structure and is used for being attached to the outer wall of the old pipe joint so as to prevent mud from flowing into the rear of the steel wire row brush.
In one possible implementation, the wire row brush includes a mounting ring, a row brush, and a positioning ring;
the mounting ring is of 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 being in contact with the outer wall of the old pipe joint;
The positioning ring is of an annular structure and is fixed on one side of the mounting ring opposite to the old pipe joint, and the positioning ring supports the row of brushes so that the row of brushes are 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;
The 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 changing machine 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 changing machine is used for changing pipes, the cutter head rotates to crush soil bodies on the front face, and the jacking mechanism pushes the machine body to advance through the new pipe joint. In the advancing process of the pipe changing machine, as the machine body is gradually far away from the jacking mechanism, the pipe sections of the new pipe sections between the jacking mechanism and the machine body are gradually increased, so that the connection of the new pipe sections 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 as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. In the drawings:
FIG. 1 is a schematic illustration of a tube changer according to an embodiment of the present application;
FIG. 2 is a schematic illustration of a tube changer according to an embodiment of the present application;
FIG. 3 is a schematic view of a crushing mechanism according to an embodiment of the present application;
FIG. 4 is a schematic view of a rotary drive mechanism according to an embodiment of the present application;
fig. 5 is a schematic view of a wire brush according to an embodiment of the present application.
Description of the drawings
1. A body 11, a conical inner wall;
2. the cutter head, 21, the conical outer wall;
3. 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 discharging mechanism;
7. A residue removing member;
8. A floating shovel blade;
9. the steel wire row brushes 91, the mounting rings 92, the row brushes 93 and the positioning rings;
10. A tray;
a. Old pipe sections;
b. New pipe sections.
Specific embodiments of the present application have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.
The embodiment of the application provides a tube changing machine, which is shown in fig. 1 and 2 and comprises 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 passing through old pipe joints. The cutterhead 2 is positioned at the front end of the machine body 1 and is used for crushing soil bodies on the front face. The rotary driving mechanism 3 is positioned in the machine body 1 and is in transmission connection with the cutterhead 2, and is used for driving the cutterhead 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 changing machine and blocking inflow of underground water, and protecting internal parts and personnel working in the pipe changing machine. The machine body 1 can be formed by 2-3 sections, and waterproof sealing is arranged between every two sections. The machine body 1 can be made of a rolled plate of thick steel plate by welding. The machine body 1 may have a cylindrical structure, and the outer diameter thereof may be 2240mm.
The cutterhead 2 is used to crush the front face soil mass by 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, cutterhead cutter, etc. The cutterhead 2 can be detachably connected with the machine body 1, so that the pipe changing machine can change different cutterheads 2 under different geological conditions. 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 the central axis.
The rotary driving mechanism 3 is used for driving the cutterhead 2 to rotate and providing power for the cutterhead 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 originating 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 can not 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. The above-described process is repeated, and the number of new pipe joints between the jacking mechanism 4 and the machine body 1 is continuously increased. It should be noted that, the jacking mechanism 4 may be an existing jacking device, and the embodiment of the present application does not limit the specific type of the jacking mechanism 4.
The old pipe section a is a pipe section to be replaced which is buried under the ground, and the new pipe section b is a pipe section which needs to be buried under 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 60mm. The inner diameter of the new pipe section b is 1800mm, the outer diameter is 2160mm, and the thickness is 180mm.
According to the scheme disclosed by the embodiment of the application, when the pipe changing machine is used for pipe changing operation, under the driving of the rotary driving mechanism 3, the cutter head 2 is used for rotationally crushing the soil body of the front face, and the jacking mechanism 4 is used for pushing the machine body 1 to advance through the new pipe joint b. In the advancing process of the pipe changing machine, as the machine body 1 gradually gets away from the jacking mechanism 4, new pipe sections b are continuously inserted between the jacking mechanism 4 and the machine body 1, and the number of the new pipe sections b between the machine body 1 and the jacking mechanism 4 gradually increases until the splicing of the new pipe sections b is completed.
By adopting the pipe changing machine provided by the embodiment of the application, old pipelines with smaller diameters such as sewage, drainage, electric power, communication and the like which are originally paved underground can be replaced by new pipelines with larger diameters without excavation, and the pipe changing machine has good application value in urban traffic, people flow and building dense areas.
In one possible implementation, as shown in fig. 3, the rear end of the cutterhead 2 has a tapered outer wall 21, and the outer diameter of the tapered outer wall 21 gradually decreases in a direction from the front end to the rear end of the body 1. The front end of the body 1 has a tapered inner wall 11, and the inner diameter of the tapered inner wall 11 gradually decreases in a direction from the front end to the rear end of the body 1. The conical outer wall 21 is opposite the conical inner wall 11 and has a slit for breaking up the soil entering the slit.
In the scheme shown in the embodiment of the application, as shown in fig. 3, the rear end of the cutter head 2 is provided with the conical outer wall 21, and the front end of the machine body 1 is provided with the conical inner wall 11 matched with the conical outer wall 21, so that the conical outer wall 21 and the conical inner wall 11 are matched to form a crushing mechanism. The crushing mechanism can crush the soil body cut by the cutter head 2 for the second time.
The crushing mechanism and the cutterhead 2 work synchronously, and when the cutterhead 2 rotates, the cutterhead 2 can cut soil body of a front face. Since the conical outer wall 21 is located on the cutterhead 2, the conical outer wall 21 and the conical inner wall 11 can rotate relatively, and therefore the conical outer wall 21 and the conical inner wall 11 can crush soil bodies entering the gap secondarily.
In order to make the crushing performance of the crushing mechanism better, a wear-resistant metal may be provided on the tapered inner wall 11 and the tapered outer wall 21.
In one possible implementation, as shown in fig. 2, the pipe changer further comprises a mud supply mechanism 5 and a slag discharge mechanism 6. The slurry supply mechanism 5 is located inside the machine body 1, and one end of a slurry supply pipe of the slurry supply mechanism 5 is located on the ground, and the other end communicates with a space between the tapered outer wall 21 and the tapered 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.
Wherein, the mud supply mechanism 5 is used for inputting mud, and the slag discharging mechanism 6 is used for discharging the dregs mixed in the mud to the ground.
In the embodiment of the present application, as shown in fig. 2, one end of the slurry supply pipe 51 of the slurry supply mechanism 5, which communicates with the space between the tapered outer wall 21 and the tapered inner wall 11, may be located above the body 1. One end of the slag discharging pipe 61 of the slag discharging mechanism 6, which communicates with the space between the tapered outer wall 21 and the tapered inner wall 11, may be located below the body 1.
By arranging the mud supply mechanism 5 and the slag discharge mechanism 6 in the machine body 1, the pipe changing machine can mix the cut slag with mud and can discharge the mud 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 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 movable ring 331 of the rolling bearing 33 is fixedly connected with the rear end of the cutterhead 2.
The output shaft of the speed reducer 32 may 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 meshed 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 slewing bearing, and the rolling bearing 33 is coaxial with the machine body 1.
The rolling bearing 33 and the cutterhead 2 can be fixedly connected through a connecting ring 34, as shown in fig. 4, for example, the connecting ring 34 is located between the rolling bearing 33 and the cutterhead 2, a moving coil 331 of the rolling bearing 33 is fixedly connected with the connecting ring 34 through bolts, and the connecting ring 34 is fixedly connected with the rear end of the cutterhead 2 through bolts.
In 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 again, 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 again.
In addition, the number and power of the rotary driving mechanisms 3 are not limited in the embodiment of the present application, and the inside of the machine body 1 is exemplified by 6 sets of rotary driving mechanisms 3, and the power of the driving motor 31 in each set of rotary driving mechanisms 3 is 30kw.
In one possible implementation, as shown in fig. 3, the tube changer further comprises a clinker removal member 7. The clinker removing member 7 is fixed to the side of the cutterhead 2 facing the old pipe joint. The slag remover 7 has a ring-shaped structure for removing slag adhering to the outer wall of the old pipe joint.
Wherein, the dregs removing member 7 is positioned at the hollow part of the center of the cutterhead 2 and is of an annular structure. The clearance between the clinker removal member 7 and the old pipe joint may be 30mm.
In the embodiment of the application, the muck remover 7 is used for primarily removing muck attached to the old pipe joint a. In one possible embodiment, the side of the clinker removal element 7 facing the old pipe section a has an alloy wear block, so that the clinker attached to the old pipe section a can be removed better.
In one possible implementation, as shown in fig. 2, the tube changer further includes a plurality of floating blades 8. A plurality of floating blades 8 are fixed on the opposite side of the cutterhead 2 from the old pipe section and are positioned behind the slag remover 7, and the plurality of floating blades 8 are distributed along the circumferential direction of the cutterhead 2. The floating shovel blade 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 shovel 8 can have a prestress shovel structure, so that the contact between the floating shovel 8 and the outer wall of the old pipe section a is relatively tight, and the extension length of the floating shovel 8 can be automatically adjusted within a certain range according to the shape of the outer wall of the old pipe section a. The floating shovel blade 8 can be provided with a high-pressure cleaning pipeline and a nozzle besides a cutter part, so that the slag on the old pipe joint can be removed more conveniently. The embodiment of the present application does not limit the specific structure of the floating blade 8.
According to the scheme disclosed by the embodiment of the application, the floating shovel blade 8 is used for further removing the residual soil on the old pipe section a entering the machine body 1, and the old pipe section a entering the machine body 1 is clean.
In one possible implementation, as shown in fig. 5, the tube changer further comprises a wire row brush 9. The wire row brush 9 is fixed inside the machine body 1 and is positioned behind the floating shovel blade 8. The wire brush 9 has a ring-shaped structure for fitting with the outer wall of the old pipe joint to block the flow of slurry into the rear of the wire brush 9.
According to the scheme disclosed by the embodiment of the application, by arranging the steel wire row brush 9, mud can be prevented 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, so that the influence on subsequent construction is avoided. The wire row brush 9 can be coaxial with the machine body 1.
In one possible implementation, the wire row brush 9 includes a mounting ring 91, a row brush 92, and a locating ring 93. The mounting ring 91 has a ring-like structure and is fixedly connected to the machine body 1. The row brush 92 has a ring-like structure and is fixed to the opposite side of the mounting ring 91 from the old pipe joint, and the row brush 92 is adapted to contact the outer wall of the old pipe joint. The positioning ring 93 has a ring-shaped structure and is fixed to the side of the mounting ring 91 opposite to the old pipe joint, and the positioning ring 93 supports the row brush 92 so that the row brush 92 is closely attached to the outer wall of the old pipe joint.
In the scheme shown in the embodiment of the application, as shown in fig. 3, the number of the row brushes 92 can be 3, the row brushes 92 can be formed by pressing and welding one block along the circumferential direction, and the positioning ring 93 is arranged at the back of the row brushes 92, so that the row brushes 92 can keep a certain angle and pressing force. When the wire brush row 9 is used, it is necessary to continuously inject sealing grease into the cavity between the brush row 92 and the outer wall of the old pipe joint.
In one 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 consistent with the radian of the outer wall of the old pipe joint. The number of trays 10 is not limited in the embodiment of the present application, and the number of trays 10 is 3 in an exemplary embodiment. The bottom of the tray 10 can be connected with a supporting rod, and the other end of the supporting rod is fixedly connected with the inner wall of the machine body 1.
According to the scheme disclosed by the embodiment of the application, the tray 10 for supporting the old pipe joint is arranged in the pipe changing 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 large deviation occurs, and the old pipe joint can be kept at the central position of the pipe changing machine.
The following describes an exemplary tube changer provided by the embodiment of the present application:
the machine body 1 is composed of 2-3 sections, and is made of thick steel plate coils by welding, and waterproof seals are arranged between every two sections.
The cutter head 2 is positioned at the front part of the machine body 1, the cutter on the cutter head 2 can be replaced with a soft soil or rock cutter according to 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 secondary crushing is performed by utilizing the rotation of the cutter head 2.
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 driving motor 31 and the speed reducer 32 in the rotation driving mechanism 3 may be 4-6 groups, and as an example, may be 6 groups, and the power of the driving motor 31 may be 30kw.
The slag removing part 7 is positioned at the hollow part of the center of the cutter head 2 and is of an annular structure, and the gap between the surface welding alloy abrasion-resistant block and the old pipe joint is 30mm.
The floating shovel blade 8 is of a prestress elastic shovel blade structure, the gap between the floating shovel blade and the old pipe joint can be automatically adjusted in a certain range according to the shape of the old pipe, and a high-pressure cleaning pipeline and a nozzle are attached to the floating shovel blade to clean 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 pressing and welding steel wire sealing brushes along a circumference 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 is required to be continuously injected into the cavity during use.
The mud supply mechanism 5 and the slag discharge mechanism 6 are arranged at the bottom of the machine body 1 and consist of a mud discharge and slag pump, a mud inlet pipeline, a mud discharge pipeline and a valve group, wherein the valve group is used for controlling the mud circulation mode. The slurry supply mechanism 5 and the slag discharge mechanism 6 can adopt small-sized special slag slurry pumps for slag discharge, the flow is 150m < 3 >/h, the lift is 30m, the pipe diameter is 65mm, and the jacking speed of the pipe changing machine is 3 cm/min.
The last section of the machine body 1 and the new pipe section adopt a socket structure and are provided with waterproof seals.
In addition, the central inner wall shell of the machine body 1, the steel wire row brushes 9 and the tray 10 jointly form an old pipe guiding mechanism for restraining an old pipe. The tray 10 is made of an arc plate with the radian consistent with that of the old pipe joint.
The middle from the cutter head 2 of the pipe changing machine to the rear part of the machine body 1 is of a hollow structure, so that old pipe joints can be 'eaten' into the pipe changing machine. The mud supply mechanism 5 utilizes a ground mud pump to feed mud into the cutter disc 2, and the soil body around the cutter disc 2 rotates to cut, so that the cut soil body and mud form mixed liquid, the mixed liquid enters the crushing mechanism, and the slag soil is discharged out of the machine body 1 through the slag discharging mechanism 6. The machine body 1 advances by adopting the way that the jacking mechanism 4 jacks in the new pipe joint, the old pipe joint moves backwards along the guiding mechanism in the machine body along with the continuous advancing of the machine body 1, just like being eaten into the bellyband, when the old pipe joint reaches the tunnel constructed by the new pipe joint, the old pipe joint is removed section by section.
In embodiments of the present application, the term "plurality" refers to two or more, unless explicitly defined otherwise.
The foregoing description of the preferred embodiments of the present application is not intended to limit the application, but rather, the application is to be construed as limited to the appended claims.
Claims (8)
1. The pipe changing machine 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 cutterhead (2) are provided with hollow structures, and the hollow structures are used for allowing old pipe joints to pass through;
The cutter head (2) is positioned at the front end of the machine body (1) and is used for crushing the soil body of the front face;
The rotary driving mechanism (3) is positioned in the machine body (1) and is in transmission connection with the cutterhead (2) and is used for driving the cutterhead (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;
the rear end of the cutter head (2) is provided with a conical outer wall (21), and the outer diameter of the conical 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 bodies entering the gap;
the pipe changing machine also comprises a mud supply mechanism (5) and a slag discharging mechanism (6);
the mud supply mechanism (5) is positioned in the machine body (1), one end of a mud supply pipeline of the mud supply mechanism (5) is positioned on the ground, and the other end of the mud 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).
2. Tube changer according to claim 1, characterized in that the rotary drive mechanism (3) comprises a drive motor (31), a speed 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 movable ring (331) of the rolling bearing (33) is fixedly connected with the rear end of the cutter head (2).
3. Tube exchange machine according to claim 1 or 2, characterized in that it further comprises a clinker removal member (7);
The dregs removing piece (7) is fixed on one side of the cutterhead (2) facing the old pipe joint;
the slag soil removing part (7) is of an annular structure and is used for removing slag soil attached to the outer wall of the old pipe joint.
4. A tube changer according to claim 3, characterized in that the side of the clinker removal element (7) facing the old tube section has an alloy wear block.
5. A tube changer according to claim 3, characterized in that the tube changer further comprises a plurality of floating blades (8);
the floating shovels (8) are fixed on one side of the cutterhead (2) opposite to the old pipe joint and are positioned behind the dregs removing piece (7), and the floating shovels (8) are distributed along the circumferential direction of the cutterhead (2);
The floating shovel blade (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.
6. Tube changer according to claim 5, characterized in that the tube changer further comprises a wire row brush (9);
The steel wire row brush (9) is fixed in the machine body (1) and is positioned behind the floating shovel blade (8);
The steel wire row brush (9) is of an annular structure and is used for being attached to the outer wall of the old pipe joint so as to prevent mud from flowing into the rear of the steel wire row brush (9).
7. Tube changer according to claim 6, 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) has 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 of the mounting ring (91) opposite to the old pipe joint, and the row brush (92) is used for being in contact with the outer wall of the old pipe joint;
the positioning ring (93) is of an annular structure and is fixed on one side, opposite to the old pipe joint, of the mounting ring (91), and the positioning ring (93) supports the row of brushes (92) so that the row of brushes (92) are tightly attached to the outer wall of the old pipe joint.
8. Tube exchange machine according to claim 1 or 2, 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 in 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110005945.2A CN114719082B (en) | 2021-01-05 | 2021-01-05 | Tube changing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110005945.2A CN114719082B (en) | 2021-01-05 | 2021-01-05 | Tube changing machine |
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| Publication Number | Publication Date |
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| CN114719082A CN114719082A (en) | 2022-07-08 |
| CN114719082B true CN114719082B (en) | 2024-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110005945.2A Active CN114719082B (en) | 2021-01-05 | 2021-01-05 | Tube changing machine |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112483104A (en) * | 2020-12-23 | 2021-03-12 | 中铁工程装备集团有限公司 | Pipe-inserting method pipeline updating heading machine and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH083352B2 (en) * | 1989-10-30 | 1996-01-17 | 株式会社奥村組 | Installation replacement device for buried pipes |
| JP4298897B2 (en) * | 2000-06-28 | 2009-07-22 | 西松建設株式会社 | Shielding device and existing pipe updating method |
| CN100343566C (en) * | 2005-10-08 | 2007-10-17 | 上海隧道工程股份有限公司 | Reaming type mud and water balance micro-push bench |
| CN103234075B (en) * | 2013-04-02 | 2014-11-19 | 中冶交通工程技术有限公司 | Trenchless pipeline replace equipment with double-ring cutter and method thereof |
| CN104482296B (en) * | 2014-10-31 | 2016-12-07 | 九峰海洋生态建设集团有限公司 | A kind of piping foundation push-bench |
| CN108386203A (en) * | 2018-02-26 | 2018-08-10 | 徐工集团凯宫重工南京有限公司 | Shield machine |
| CN208364940U (en) * | 2018-05-02 | 2019-01-11 | 广东中科华冉智网科技有限公司 | Small diameter tube plastic drain-pipe jacking construction equipment |
| CN111335898B (en) * | 2020-02-24 | 2021-09-10 | 中铁工程装备集团有限公司 | Trenchless pipeline updating construction system and construction method |
| CN111852493B (en) * | 2020-07-30 | 2021-11-19 | 中铁工程装备集团有限公司 | Pipeline updating heading machine and construction method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483104A (en) * | 2020-12-23 | 2021-03-12 | 中铁工程装备集团有限公司 | Pipe-inserting method pipeline updating heading machine and construction method |
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