CN220302133U - Quick replacement device for cutterhead scraper of full-face heading machine - Google Patents
Quick replacement device for cutterhead scraper of full-face heading machine Download PDFInfo
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- CN220302133U CN220302133U CN202322075779.0U CN202322075779U CN220302133U CN 220302133 U CN220302133 U CN 220302133U CN 202322075779 U CN202322075779 U CN 202322075779U CN 220302133 U CN220302133 U CN 220302133U
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- scraper
- spoke
- standby
- primary
- oil cylinder
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- 238000000034 method Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 9
- 230000005641 tunneling Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 description 17
- 238000005299 abrasion Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 2
- 230000027648 face development Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model relates to a cutter head scraper of a full-face heading machine, in particular to a quick replacement device for the cutter head scraper of the full-face heading machine. The scraper replacing device has the characteristic of rapid scraper replacing process, and can improve the tunneling distance of the scraper and save personnel cost and maintenance cost. The spoke type cutterhead comprises a spoke type cutterhead of a heading machine; the two sides of each spoke of the spoke type cutter head are provided with primary mounting scrapers, and the primary mounting scrapers are arranged in a group by group and symmetrically; a plurality of groups of primary scraper groups are distributed on the spokes along the length direction; the left and right inner sides of the spoke are respectively provided with a channel groove along the thickness direction of the spoke, and an oil cylinder and a standby scraper are arranged in the channel grooves; the cylinder rod of the oil cylinder is connected with the standby scraper, and extends out to drive the standby scraper to move upwards along the channel groove; when the cylinder rod of the oil cylinder extends to the maximum length, the standby scraper is exposed out of the channel groove and keeps the same height with the corresponding primary scraper in the primary-loading scraper group at the secondary periphery.
Description
Technical Field
The utility model relates to a cutter head scraper of a full-face heading machine, in particular to a quick replacement device for the cutter head scraper of the full-face heading machine; in particular to a scraper quick replacement device special for a cutterhead of a full-face tunnel boring machine.
Background
The full-face tunneling machine is factory-like pipeline tunnel construction equipment integrated by systems such as a machine, an electric system, a liquid system, an optical system, an air system and the like. The cutterhead of the full-face heading machine is positioned at the forefront end of the whole equipment, and the cutterhead is driven by a driving device to cut an excavation surface by rotating a cutter through the cutterhead body.
When the cutterhead is used for rotary tunneling in the sand gravel, due to the mobility of the sand gravel, the scraper assembled on the cutterhead panel is seriously worn, particularly the abrasion is particularly serious due to the fact that the linear speed of the scraper on the outer ring of the spoke of the cutterhead is high, and the cutting efficiency of the cutterhead is seriously affected.
When the construction tunneling distance is longer, the primary installed scraper on the original cutterhead is difficult to adhere to the whole tunneling, and the abrasion serious phenomenon occurs, so that the penetration degree is reduced, and the cutting is not ideal. At this time, the machine is required to stop and change the cutter, and the original cutter entering and changing process is complex, so that the construction efficiency is seriously affected. And the proper tool changing point position of the construction section is also considered, so that the collapse of the ground building caused by the tool changing process is prevented. It is therefore an urgent need to develop a rapid replacement device for cutterhead blades.
Disclosure of Invention
The utility model provides a quick replacement device for a cutterhead scraper of a full-face heading machine aiming at the defects existing in the prior art. The scraper replacing device has the characteristic of rapid scraper replacing process, and can improve the tunneling distance of the scraper and save personnel cost and maintenance cost.
In order to achieve the purpose, the utility model adopts the following technical scheme that the spoke type cutterhead of the heading machine is included; the two sides of each spoke of the spoke type cutter head are provided with primary mounting scrapers, and the primary mounting scrapers are arranged in a group by group and symmetrically; the spokes are distributed with a plurality of groups of primary-installed scraper groups along the length direction (or along the radius direction of the cutterhead); the left and right inner sides of the spoke are respectively provided with a channel groove along the thickness direction of the spoke, and an oil cylinder and a standby scraper are arranged in the channel grooves; the cylinder rod of the oil cylinder is connected with the standby scraper, and extends out to drive the standby scraper to move upwards along the channel groove.
When the cylinder rod of the oil cylinder extends to the maximum length, the standby scraper is exposed out of the channel groove, the height of the standby scraper and the height of the corresponding primary scraper in the primary peripheral scraper group are kept the same, and when the cutterhead rotates, the same track is kept.
The secondary periphery means that the outermost primary set of blades, i.e. the second largest set of blades along the spoke length radius, except for the secondary peripheral blades. The primary peripheral doctor blade set is arranged on the secondary peripheral because the primary peripheral doctor blade is worn out greatly due to the high linear velocity, and in practice, the outermost peripheral doctor blade cannot be replaced, so the secondary peripheral doctor blade is selected. In practice, each layer of primary set of blades may correspond to a set of backup blades, except for the secondary peripheral blades.
Further, the oil cylinder base of the oil cylinder is fixed at the bottom of the channel groove.
Furthermore, the oil cylinder base is welded and fixed on the sealing plate, the sealing plate is used as a bottom plate of the channel groove, and the sealing plate is welded and fixed with the cutter disc spokes.
Further, the two channel grooves correspond to the positions of the two primary mounting scrapers of the primary mounting scraper group at the secondary periphery of the spoke. Namely, in the two channel grooves, the first channel groove corresponds to one primary mounting scraper position of the secondary peripheral primary mounting scraper group, and the second channel groove corresponds to the other primary mounting scraper position of the secondary peripheral primary mounting scraper group.
Further, when the standby scraper is positioned in the channel groove, two sides of the standby scraper are contacted with the inner wall of the channel groove.
Further, a cylinder rod of the oil cylinder is hinged with the bottom of the standby scraper.
Further, the slope of each channel groove is the same as the slope of the side corresponding to the thickness direction of the spoke.
Compared with the prior art, the utility model has the beneficial effects.
The utility model uses the thrust of the hydraulic cylinder as a support to push out the standby scraper at any time, and the standby scraper has the same height and the same track as the original scraper, so that the original scraper can be replaced. The scraper replacing device has the characteristics of rapid scraper replacing process and rapid replacing time, so that the tunneling distance of the scraper is increased, the personnel cost and the maintenance cost are saved, and the safety is greatly increased.
Drawings
The utility model is further described below with reference to the drawings and the detailed description. The scope of the present utility model is not limited to the following description.
Fig. 1 is a schematic view of a rapid cutterhead blade replacement device for a full face development machine when a backup blade is retracted into the inside of a cutterhead spoke.
Fig. 2 is a schematic diagram of the rapid cutter head and blade replacement device of the full face development machine when the primary mounting blades of the outer ring are worn and the standby blades are ejected.
Fig. 3 is a cross-sectional view of A-A of fig. 1 as the backup blade is retracted into the interior of the cutterhead spokes.
Fig. 4 is a schematic cross-sectional view of A-A of fig. 1 as the ram pushes the backup blade to the original blade height.
In the figure, 1 is a primary scraper, 2 is a standby scraper, 3 is a pressing plate, 4 is an oil cylinder, 5 is an oil cylinder base, 6 is a sealing plate, 7 is a cutter disc spoke, 8 is a wearing part, 9 is a cutter disc, 10 is a first channel groove, 11 is a second channel groove, and 12 is an oil cylinder piston rod ball head.
Detailed Description
As shown in fig. 1-4, the rapid replacing device for the cutterhead scraper of the full-face heading machine comprises: the spoke type cutterhead comprises a spoke type cutterhead of a heading machine; the two sides of each spoke of the spoke type cutter head are provided with primary mounting scrapers 1, and the primary mounting scrapers 1 are arranged in a group by group and symmetrically; and the spokes are distributed with a plurality of groups of primary-installed scrapers 1 along the length direction (or along the radius direction of the cutterhead); a channel groove is respectively arranged on the left inner side and the right inner side of the spoke along the thickness direction of the spoke, and an oil cylinder 4 and a standby scraper 2 are arranged in the channel groove; the cylinder rod of the oil cylinder is connected with the standby scraper 2, and the cylinder rod of the oil cylinder 4 extends out to drive the standby scraper 2 to move upwards along the channel groove; when the cylinder rod of the oil cylinder 4 extends to the maximum length, the standby scraper 2 is exposed out of the channel groove and keeps the same height with the corresponding primary scraper 1 in the secondary peripheral primary scraper 1 group, and the same track is kept when the cutter head 9 rotates.
Wherein the secondary periphery means, in addition to the secondary peripheral blades, the outermost set of primary blades, i.e. the set of blades having the second largest radius along the length of the spoke. The primary peripheral doctor blade set is arranged on the secondary periphery, and the secondary periphery is selected because the primary peripheral doctor blade is worn out greatly due to the high linear velocity, and the outermost peripheral doctor blade cannot be replaced. In practice, each layer of primary set of blades may correspond to a set of backup blades 2, except for the secondary peripheral blades.
Fig. 1 is a front view of the device with the backup blade 2 retracted inside the cutter spokes 7; in connection with the sectional view A-A of fig. 3, the backup blade 2 is retracted inside the cutter disc spokes 7. When the cutterhead is tunneled for a long distance, the initially installed scraper 1 is worn, and the cutter height H, namely the cutter height H in the figure, is changed; openings (namely channel grooves) are arranged on the front spoke and the back spoke of the primary scraper 1, and the size of the openings is slightly larger than or equal to that of the spare scraper 2.
The quick replacing device for the cutterhead scraper of the full-face development machine does not influence the layout of an original cutter, a spare scraper 2 can be arranged behind the original cutterhead scraper, and when the abrasion of an original cutter is serious, the quick replacing device has the characteristics of quick replacing process and quick replacing time, so that the development distance of the cutterhead scraper can be increased, the personnel cost and the maintenance cost are saved, and the safety is greatly increased.
The cylinder base 5 of the cylinder in embodiment 1 is fixed at the bottom of the channel groove. The hydro-cylinder base 5 welded fastening is on shrouding 6, and shrouding 6 is as the bottom plate of passageway recess, shrouding 6 and blade disc spoke 7 welded fastening.
In embodiment 2, the two channel grooves (first channel groove 10, second channel groove 11) correspond to the positions of the two primary blades 1 of the primary blade 1 group located at the secondary periphery of the spoke in the top view of the cutterhead. And the slope of the length direction of each channel groove is the same as the slope of the side corresponding to the thickness direction of the spoke. When the standby scraper 2 is positioned in the channel groove, two sides of the standby scraper 2 are contacted with the inner wall of the channel groove. When the primary installation scraper 1 on the panel detects that the abrasion is serious, the oil cylinder stretches out by utilizing oil pressure, and is simultaneously connected to the standby scraper 2, so that the standby scraper 2 stretches out along the channel grooves of the cutter disc spokes 7, and the steel plates at the two sides of the channel grooves are equivalent to the action of the guide device. The extended spare scraper 2 replaces the original position of the primary mounting scraper 1, ensures the same track and the same height of the primary mounting scraper 1, realizes the quick replacement of the primary mounting scraper 1 and supplements the whole cutter track.
In the embodiment 3, the standby scraper 2 is hinged into the standby scraper 2 through an oil cylinder ball seat at the top end of the oil cylinder, and is fixed by the pressing plate 3, so that the spherical hinge realizes a certain angle adjustment of the standby scraper 2, and the oil cylinder is prevented from being stressed by lateral force. Namely: the cylinder rod of the oil cylinder is hinged with the bottom of the standby scraper 2, namely, the ball head 12 of the piston rod of the oil cylinder, namely, the ball joint is positioned in an installation groove at the bottom of the standby scraper 2, and the outside of the installation groove is fixedly sealed by a pressing plate 3. The ball hinge realizes the adjustment of the standby scraper 2 at a certain angle and prevents the oil cylinder from being stressed by lateral force.
Specifically, firstly, on the cutter disc spoke 7, openings (namely channel grooves) are formed in front and back spokes of the secondary peripheral primary installation scraper 1 with the most serious abrasion, the opening size is slightly larger than (or equal to) the size of the spare scraper 2 (width), and the inner part of the spare scraper 2 is hinged to the inner part of the spare scraper 2 through an oil cylinder ball seat at the top end of an oil cylinder, so that certain angle adjustment is realized.
2. The bottom of the oil cylinder is also connected to the oil cylinder base 5 through an oil cylinder bottom ball seat, the oil cylinder base 5 is fixed on the sealing plate 6 through welding, and finally the sealing plate 6 is welded on the cutter disc spokes 7.
3. When the primary scraper 1 on the panel detects that the abrasion is serious, the oil cylinder is used for extending and connecting to the standby scraper 2, so that the standby scraper 2 extends, and the extended standby scraper 2 replaces the original primary scraper 1 in position, the same track and the same height.
The utility model has reasonable and reliable structure, low cost, convenient and quick operation and simple construction, and meets the requirements of green safety shield construction.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the utility model, which is defined by the following claims.
Claims (7)
1. A cutter head scraper quick replacement device of a full-face heading machine comprises a spoke type cutter head of the heading machine; the two sides of each spoke of the spoke type cutter head are provided with primary mounting scrapers, and the primary mounting scrapers are arranged in a group by group and symmetrically; a plurality of groups of primary scraper groups are distributed on the spokes along the length direction;
the method is characterized in that: the left and right inner sides of the spoke are respectively provided with a channel groove along the thickness direction of the spoke, and an oil cylinder and a standby scraper are arranged in the channel grooves; the cylinder rod of the oil cylinder is connected with the standby scraper, and extends out to drive the standby scraper to move upwards along the channel groove;
when the cylinder rod of the oil cylinder extends to the maximum length, the standby scraper is exposed out of the channel groove and keeps the same height with the corresponding primary scraper in the primary-loading scraper group at the secondary periphery.
2. The rapid replacing device for cutterhead scraper of full-face heading machine according to claim 1, wherein: the oil cylinder base of the oil cylinder is fixed at the bottom of the channel groove.
3. The rapid replacing device for cutterhead scraper of full-face heading machine according to claim 2, wherein: the oil cylinder base is welded and fixed on the sealing plate, the sealing plate is used as a bottom plate of the channel groove, and the sealing plate is welded and fixed with the cutter disc spokes.
4. A rapid replacement device for cutterhead blades of a full face heading machine according to any one of claims 1-3, wherein: the two channel grooves correspond to the positions of the two primary mounting scrapers of the primary mounting scraper group at the secondary periphery of the spoke.
5. A rapid replacement device for cutterhead blades of a full face heading machine according to any one of claims 1-3, wherein: when the standby scraper is positioned in the channel groove, two sides of the standby scraper are contacted with the inner wall of the channel groove.
6. A rapid replacement device for cutterhead blades of a full face heading machine according to any one of claims 1-3, wherein: and a cylinder rod of the oil cylinder is hinged with the bottom of the standby scraper.
7. A rapid replacement device for cutterhead blades of a full face heading machine according to any one of claims 1-3, wherein: the slope of each channel groove is the same as the slope of the side corresponding to the thickness direction of the spoke.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322044708 | 2023-08-01 | ||
| CN2023220447084 | 2023-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220302133U true CN220302133U (en) | 2024-01-05 |
Family
ID=89353431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322075779.0U Active CN220302133U (en) | 2023-08-01 | 2023-08-03 | Quick replacement device for cutterhead scraper of full-face heading machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220302133U (en) |
-
2023
- 2023-08-03 CN CN202322075779.0U patent/CN220302133U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |