CN211370404U - Shield scraper actively controlled by magnetorheological elastomer - Google Patents
Shield scraper actively controlled by magnetorheological elastomer Download PDFInfo
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- CN211370404U CN211370404U CN201922123443.0U CN201922123443U CN211370404U CN 211370404 U CN211370404 U CN 211370404U CN 201922123443 U CN201922123443 U CN 201922123443U CN 211370404 U CN211370404 U CN 211370404U
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- cutter
- magnetorheological elastomer
- protrusion
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Abstract
The utility model discloses an adopt magneto rheological elastomer active control's shield to construct scraper, include: the top of the cutter body is provided with a plurality of cutting edges, a cavity is arranged in each cutting edge, a magnetorheological elastomer is filled in each cavity, and an electromagnetic coil is wound outside each magnetorheological elastomer; one side of the cutter body is provided with a T-shaped bulge formed by a horizontal bulge and a vertical bulge, the front side of the cutter holder is provided with an installation groove matched with the vertical bulge, and the back side of the cutter holder is provided with a welding clamp position; a pressure sensor is arranged in the horizontal protrusion, a power supply and a controller are arranged in the vertical protrusion, the pressure sensor collects pressure signals and sends the pressure signals to the controller, and when the pressure value exceeds a threshold value, the controller controls the power supply to supply power to the electromagnetic coil so as to apply a magnetic field to the magnetorheological elastomer and change the rigidity of the cutting edge.
Description
Technical Field
The utility model belongs to shield constructs quick-witted design field, relates to an adopt magneto rheological elastomer active control's shield to construct scraper.
Background
The shield scrapers are indispensable important components of a cutter used by a shield machine and are arranged on two sides of an opening groove of a cutter head, when the shield machine is pushed forwards, the scrapers rotate along with the cutter head to generate axial shearing force and radial cutting force on a soil body of an excavation surface, and under the rotation of the cutter head, a cutting edge and a cutter head part are inserted into a stratum to continuously cut the soil body in front of the excavation surface.
When the shield machine is constructed in a composite stratum, the existing shield scraper suffers from large impact load when in use, the damage of the cutter is easily caused, and other cutters and equipment are damaged when the cutter is serious, so that the safety and the tunneling efficiency of the shield construction equipment are greatly influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing an adopt magneto rheological elastomer active control's shield structure scraper, this cutter can increase the rigidity of cutter when the shield constructs the machine and pass through the stratum, and can effectively prevent droing of cutter, reduces the wearing and tearing of cutter, increases its life.
The utility model provides an adopt magneto rheological elastomer active control's shield to construct scraper, include: the magnetic knife comprises a knife body and a knife holder, wherein a plurality of cutting edges are arranged at the top of the knife body, a cavity is arranged in each cutting edge, a magnetorheological elastomer is filled in each cavity, and an electromagnetic coil is wound outside each magnetorheological elastomer; one side of the cutter body is provided with a T-shaped bulge formed by a horizontal bulge and a vertical bulge, the front side of the cutter holder is provided with an installation groove matched with the vertical bulge, and the back side of the cutter holder is provided with a welding clamp position;
the electromagnetic coil is characterized in that a pressure sensor is arranged in the horizontal protrusion, a power supply and a controller are arranged in the vertical protrusion, the pressure sensor is arranged in the horizontal protrusion, the power supply and the controller are arranged in the vertical protrusion, the pressure sensor is connected with the controller, the controller is connected with the power supply, and the power supply is connected with the electromagnetic coil.
In the shield scraper actively controlled by the magnetorheological elastomer, the middle positions of the two side surfaces of the vertical bulge are respectively provided with a groove, and the top of the horizontal bulge is provided with a first pin hole penetrating through the groove of the vertical bulge; the cutter is characterized in that a convex block matched with the groove is arranged in the mounting groove of the cutter holder, a second pin bolt hole is formed in the convex block, the T-shaped protrusion is inserted into the mounting groove, and the cutter body is longitudinally connected with the cutter holder by inserting the pin bolt into the first pin bolt hole and the second pin bolt hole.
The utility model discloses an adopt magneto rheological elastomer active control's shield structure scraper in be equipped with first bolt hole on the cutter body of horizontal protrusion below and on vertical arch, be equipped with the second bolt hole on the relevant position of blade holder, in the protruding installation groove that inserts of T type, insert first bolt hole and second bolt hole through the bolt and realize cutter body and blade holder transverse connection.
The utility model discloses an adopt magneto rheological elastomer active control's shield structure scraper, the material of cutter body is 42 CrMo.
The utility model discloses an adopt magneto rheological elastomer active control's shield structure scraper, the material of blade is carbide.
The utility model discloses an adopt magneto rheological elastomer active control's shield structure scraper, the material of blade holder is 20 Cr.
The utility model discloses an adopt magneto rheological elastomer active control's shield to construct scraper has following advantage and beneficial effect at least:
(1) this cutter can detect the size of the pressure that the cutting edge receives, and the controller can control the power and supply power to the outer coil of elastomer when pressure is great to the intensity of increase cutting edge, thereby adapt to different geology.
(2) The cutter is provided with the vertical pin bolt connection, so that the pulling force which is several times that of the bolt connection can be provided, and the impact resistance of the scraper is improved;
(3) the cutter is provided with the bolt in the horizontal direction and the pin bolt in the vertical direction, so that the cutter is effectively prevented from falling off;
(4) the cutter adopts the magnetorheological elastomer, so that sound absorption and noise reduction can be realized.
(5) The cutter has the advantages of simple structure, good stability, strong practicability and the like.
Drawings
Fig. 1 is a schematic structural diagram of a shield scraper body actively controlled by a magnetorheological elastomer according to the present invention;
fig. 2 is a schematic structural diagram of a cutter holder of a shield scraper actively controlled by a magnetorheological elastomer according to the present invention;
fig. 3 is a cross-sectional view of a shield scraper actively controlled by a magnetorheological elastomer according to the present invention;
fig. 4 is a power supply block diagram of the electromagnetic coil of the shield scraper actively controlled by the magnetorheological elastomer according to the present invention.
Detailed Description
As shown in fig. 1 and fig. 2, the utility model discloses an adopt magneto rheological elastomer active control's shield structure scraper includes: the magnetic knife comprises a knife body 1 and a knife 2 seat, wherein a plurality of cutting edges 3 are arranged at the top of the knife body 1, a cavity is arranged in each cutting edge 3, a magnetorheological elastomer 4 is filled in each cavity, and an electromagnetic coil 5 is wound outside each magnetorheological elastomer 4. The cutter body 1 one side is equipped with the T type arch that constitutes by horizontal arch 6 and vertical arch 7, the blade holder 2 openly is equipped with the mounting groove 8 of installing with vertical arch 7 cooperation, and the blade holder 2 back is equipped with the welding screens.
A pressure sensor 9 is arranged in the horizontal protrusion 6, and a power supply 10 and a controller 12 are arranged in the vertical protrusion 7. The pressure sensor is connected with the controller, the controller is connected with the power supply, and the power supply is connected with the electromagnetic coil. The pressure sensor 9 collects pressure signals and sends the pressure signals to the controller 12, and when the pressure values exceed a threshold value, the controller 12 controls the power supply 10 to supply power to the electromagnetic coil 5 so as to apply a magnetic field to the magnetorheological elastomer 4 and change the rigidity of the cutting edge 3.
As shown in fig. 1-3, the middle positions of the two side surfaces of the vertical protrusion 7 are respectively provided with a groove 71, and the top of the horizontal protrusion 6 is provided with a first pin hole 61 penetrating through the groove 71 of the vertical protrusion 7; a convex block 81 matched with the groove 71 is arranged in the mounting groove 8 of the cutter holder 2, a second pin bolt hole 82 is arranged on the convex block 81, the T-shaped protrusion is inserted into the mounting groove 8, and the cutter body 1 is longitudinally connected with the cutter holder 2 by inserting the pin bolt into the first pin bolt hole 61 and the second pin bolt hole 82.
The cutter body below the horizontal protrusion 6 and the vertical protrusion 7 are provided with first bolt holes 11, the corresponding position of the cutter holder 2 is provided with a second bolt hole 21, the T-shaped protrusion is inserted into the mounting groove 8, and the cutter body 1 and the cutter holder 2 are transversely connected by inserting bolts into the first bolt holes 11 and the second bolt holes 21.
In specific implementation, the cutter body is made of 42CrMo, the cutting edge is made of hard alloy, and the cutter holder is made of 20 Cr.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the spirit of the present invention, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A shield scraper actively controlled by adopting a magnetorheological elastomer is characterized by comprising: the magnetic knife comprises a knife body and a knife holder, wherein a plurality of cutting edges are arranged at the top of the knife body, a cavity is arranged in each cutting edge, a magnetorheological elastomer is filled in each cavity, and an electromagnetic coil is wound outside each magnetorheological elastomer; one side of the cutter body is provided with a T-shaped bulge formed by a horizontal bulge and a vertical bulge, the front side of the cutter holder is provided with an installation groove matched with the vertical bulge, and the back side of the cutter holder is provided with a welding clamp position;
the pressure sensor is arranged in the horizontal protrusion, the power supply and the controller are arranged in the vertical protrusion, the pressure sensor is connected with the controller, the controller is connected with the power supply, and the power supply is connected with the electromagnetic coil.
2. The shield scraper adopting the magnetorheological elastomer for active control according to claim 1, wherein grooves are respectively formed in the middle positions of the two side surfaces of the vertical protrusion, and a first pin hole penetrating through the grooves of the vertical protrusion is formed in the top of the horizontal protrusion; the cutter is characterized in that a convex block matched with the groove is arranged in the mounting groove of the cutter holder, a second pin bolt hole is formed in the convex block, the T-shaped protrusion is inserted into the mounting groove, and the cutter body is longitudinally connected with the cutter holder by inserting the pin bolt into the first pin bolt hole and the second pin bolt hole.
3. The shield scraper using the magnetorheological elastomer for active control according to claim 1 or 2, wherein a first bolt hole is formed in the cutter body and the vertical protrusion below the horizontal protrusion, a second bolt hole is formed in the corresponding position of the cutter holder, the T-shaped protrusion is inserted into the mounting groove, and the cutter body and the cutter holder are transversely connected by inserting bolts into the first bolt hole and the second bolt hole.
4. The actively controlled shield scraper with a magnetorheological elastomer of claim 1, wherein the body is 42 CrMo.
5. The shield scraper using magnetorheological elastomer for active control according to claim 1, wherein the cutting edge is made of cemented carbide.
6. The shield scraper using magnetorheological elastomer for active control according to claim 1, wherein the tool holder is made of 20 Cr.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922123443.0U CN211370404U (en) | 2019-12-02 | 2019-12-02 | Shield scraper actively controlled by magnetorheological elastomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922123443.0U CN211370404U (en) | 2019-12-02 | 2019-12-02 | Shield scraper actively controlled by magnetorheological elastomer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211370404U true CN211370404U (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922123443.0U Active CN211370404U (en) | 2019-12-02 | 2019-12-02 | Shield scraper actively controlled by magnetorheological elastomer |
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| CN (1) | CN211370404U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761803A (en) * | 2019-12-02 | 2020-02-07 | 沈阳众磊道桥有限公司 | Shield scraper actively controlled by magnetorheological elastomer |
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2019
- 2019-12-02 CN CN201922123443.0U patent/CN211370404U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761803A (en) * | 2019-12-02 | 2020-02-07 | 沈阳众磊道桥有限公司 | Shield scraper actively controlled by magnetorheological elastomer |
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