CN113510298B - Cutting and pulling mechanical head and method for cutting off and pulling anchor cable and anchor rod close to foundation pit - Google Patents
Cutting and pulling mechanical head and method for cutting off and pulling anchor cable and anchor rod close to foundation pit Download PDFInfo
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- CN113510298B CN113510298B CN202110433840.7A CN202110433840A CN113510298B CN 113510298 B CN113510298 B CN 113510298B CN 202110433840 A CN202110433840 A CN 202110433840A CN 113510298 B CN113510298 B CN 113510298B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910000851 Alloy steel Inorganic materials 0.000 claims abstract description 154
- 230000007246 mechanism Effects 0.000 claims abstract description 4
- 238000005553 drilling Methods 0.000 claims description 13
- 238000007688 edging Methods 0.000 claims description 9
- 238000004873 anchoring Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D31/00—Shearing machines or shearing devices covered by none or more than one of the groups B23D15/00 - B23D29/00; Combinations of shearing machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D35/00—Tools for shearing machines or shearing devices; Holders or chucks for shearing tools
- B23D35/001—Tools for shearing machines or shearing devices; Holders or chucks for shearing tools cutting members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
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Abstract
The invention discloses a cutting and removing mechanical head and a method for cutting and removing an anchor rope and an anchor rod close to a foundation pit, wherein the cutting and removing mechanical head comprises a base, a first special high-strength alloy steel electric cutting machine and a second special high-strength alloy steel electric cutting machine; the upper part of the base is connected with a lifting mechanism and an electrical control device, and a first special high-strength alloy steel electric cutting machine and a second special high-strength alloy steel electric cutting machine are arranged on a mounting plate at the lower part of the base. The first special high-strength alloy steel electric cutting machine tool and the second special high-strength alloy steel electric cutting machine tool respectively comprise an electric machine tool control rod, a motor, a rotating bearing, a rotating disk back gear, a high-strength alloy steel upper cutter head and a high-strength alloy steel lower cutter head. The cutting and pulling mechanical head and the method for cutting and pulling out the anchor cable and the anchor rod close to the foundation pit can effectively cut off and pull out the anchor cable and the anchor rod, and are low in time consumption, low in energy consumption, efficient and reliable.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a cutting and pulling mechanical head and a cutting and pulling mechanical method for cutting and pulling anchor cables and anchor rods close to a foundation pit.
Background
In recent years, with the vigorous development of subway construction, more and more subway stations and shield sections are built in the urban core area. A large number of residential buildings, urban complexes, cultural exhibition centers and other buildings exist in an urban core area, foundation pits of the buildings are deep, and pile-anchor support is usually adopted in a supporting scheme. In order to provide sufficient lateral resistance, the pile-anchor supporting structure is long in anchor cable length, often enters the construction range of subway stations and shield zones, and has very adverse effects on subway open cut foundation pits and shield tunnels.
Before the construction of a subway station foundation pit and an interval shield, an anchor cable and an anchor rod which are invaded into the range of the foundation pit are often required to be cut off or pulled out, otherwise, the construction of the subway is seriously influenced. The existing common processing scheme is that an anchor cable and an anchor rod are twisted off by a rotary drilling rig, and the scheme is large in energy consumption, long in time consumption and large in influence on surrounding buildings.
Disclosure of Invention
In view of the above, the present invention provides a cutting and removing mechanical head and a method for cutting and removing an anchor rod of an anchor cable near a foundation pit, which can effectively cut and remove the anchor cable and the anchor rod, and has the advantages of short time consumption, low energy consumption, high efficiency and reliability.
In order to achieve the purpose, the invention adopts the following technical scheme: the cutting and removing mechanical head for cutting and removing the anchor rope and the anchor rod close to the foundation pit comprises a base, a first special high-strength alloy steel electric cutting machine and a second special high-strength alloy steel electric cutting machine; the upper part of the base is connected with a lifting mechanism and an electrical control device, and a first special high-strength alloy steel electric cutting machine and a second special high-strength alloy steel electric cutting machine are arranged on a mounting plate at the lower part of the base;
the first special high-strength alloy steel electric cutting machine and the second special high-strength alloy steel electric cutting machine respectively comprise an electric machine control rod, a motor, a rotating bearing, a rotating disk back gear, a high-strength alloy steel upper cutter head and a high-strength alloy steel lower cutter head; the electric machine control rod is fixed on the mounting plate at the lower part of the base, a control circuit is arranged in the electric machine control rod, one end of the control circuit is connected with the electric control equipment, and the other end of the control circuit is connected with the motor;
the motor and the rotating bearing are arranged on a control rod of the electric machine tool, and the motor drives a back gear of the rotating disk arranged on the rotating bearing to rotate; the back gear of the rotating disc is meshed with the back gear of the high-strength alloy steel upper cutter disc, and the back gear of the rotating disc drives the back gear of the high-strength alloy steel upper cutter disc to rotate through meshing so as to drive the high-strength alloy steel upper cutter disc to rotate relative to the high-strength alloy steel lower cutter disc.
Furthermore, the high-strength alloy steel upper cutter disc is hinged with the high-strength alloy steel lower cutter disc through a high-strength bolt, the high-strength bolt is installed on the base lower portion installation plate, the high-strength alloy steel lower cutter disc is fixed on the base lower portion installation plate, the high-strength alloy steel upper cutter disc can rotate around the high-strength bolt, and the two ends of a back gear of the high-strength alloy steel upper cutter disc are provided with the backstop safety pins; the inner sides of the high-strength alloy steel upper cutter disc and the high-strength alloy steel lower cutter disc are both provided with arc-shaped edging, and the arc-shaped radius of the edging in the high-strength alloy steel upper cutter disc is larger than that of the edging in the high-strength alloy steel lower cutter disc.
The method for cutting off and removing the anchor cable and the anchor rod close to the foundation pit adopts the cutting and removing mechanical head, and comprises the following steps: s1, determining the concrete position and direction of the anchor rod of the anchor cable according to the basic data of the anchor rod of the peripheral anchor cable and by combining geophysical prospecting;
s2, drilling a hole by adopting a rotary drilling bit, and after the hole is drilled to the position of the anchor cable, lifting the rotary drilling bit to form a cutting and removing drilling hole;
s3, the cutting and pulling mechanical head is placed into the cutting and pulling drill hole to reach the position of an anchor cable, two motors of a first special high-strength alloy steel electric cutting tool and a second special high-strength alloy steel electric cutting tool are controlled to drive a back gear of a rotating disc to rotate, a high-strength alloy steel upper cutter disc is driven to rotate away from a high-strength alloy steel lower cutter disc, the high-strength alloy steel upper cutter disc and the high-strength alloy steel lower cutter disc are opened, and the two motors are closed; hooking the anchor cable anchor rod between a high-strength alloy steel upper cutter disc and a high-strength alloy steel lower cutter disc, controlling two motors to drive a back gear of a rotating disc to rotate, driving the high-strength alloy steel upper cutter disc to rotate close to the high-strength alloy steel lower cutter disc, biting the hooked anchor cable anchor rod, and closing the two motors;
s4, lifting the cutting and pulling mechanical head to a state that the anchor cable and the anchor rod are tensioned, starting a motor of a second special high-strength alloy steel electric cutting machine, continuously driving a high-strength alloy steel upper cutter disc to rotate close to a high-strength alloy steel lower cutter disc until the anchor cable and the anchor rod are cut off, and closing the motor of the second special high-strength alloy steel electric cutting machine;
and S5, lifting the cutting and pulling mechanical head, wherein the lifting tension is greater than the anchoring force of the rest anchor cable, the anchoring section gradually loosens, and the rest anchor cable anchor rod is pulled out of the cutting and pulling drill hole by a first special high-strength alloy steel electric cutting machine.
Further, in step S3, the anchor cable is hooked by the movable bolt hook and lifted upward, and the anchor rod of the anchor cable is hooked between the high-strength alloy steel upper cutter head and the high-strength alloy steel lower cutter head.
Further, in the process that the second special high-strength alloy steel electric cutting machine cuts the anchor rod of the anchor cable in the step S4, the mechanical head is lifted, cut and removed repeatedly, and the anchor rod of the anchor cable is judged to be cut off by reducing the lifting resistance.
The invention has the beneficial effects that:
the cutting and pulling mechanical head for cutting and pulling out the anchor rod of the anchor cable close to the foundation pit is specially used for cutting and pulling out the anchor rod of the existing anchor cable in the range of the shield interval, can effectively cut and pull out the anchor cable and the anchor rod, prevents shield mechanical cutter heads from being wound or mixed by the anchor cable to cause shield shutdown accidents during shield construction, and prevents the anchor cable in individual residual soil from being easily formed into mud cakes in front of the cutter heads, the rotation resistance of the shield machine is increased, and the energy consumption is increased.
The method for cutting off and pulling out the anchor cable and the anchor rod close to the foundation pit has the following advantages: 1) compared with the traditional process, the process has the advantages of less time consumption and less energy consumption.
2) After the cutting and pulling-out, the damage and winding of the cutter head of the shield machine can be greatly reduced, and the residual anchor cable is prevented from forming mud cakes in front of the cutter head.
3) The first special high-strength alloy steel electric cutting machine tool and the second special high-strength alloy steel electric cutting machine tool are integrated, the special high-strength alloy cutting machine tool can hold or cut off the anchor rope and the anchor rod, and the cutting tool is less in abrasion and can be repeatedly used.
4) The foundation pit is small for the existing foundation pit or building, and the disturbance to the surrounding building is small.
5) The shield structure has small influence on the shield structure area to be constructed, and reduces the construction risks of shield structure shutdown, shield structure settlement and deflection.
Drawings
FIG. 1 is a schematic structural view of a cutting and removing mechanical head according to the present invention;
FIG. 2 is a schematic structural view of a first special high-strength alloy steel electric cutting machine and a second special high-strength alloy steel electric cutting machine according to the present invention;
FIG. 3 is a diagram showing a state that a first special high-strength alloy steel electric cutting machine and a second special high-strength alloy steel electric cutting machine of the invention gradually approach each other and are tightly gripped;
FIG. 4 is a diagram showing a second special high-strength alloy steel electric cutting machine according to the present invention in a cutting state after approaching clenching;
FIG. 5 is a diagram of the state of the first special high-strength alloy steel electric cutting machine and the second special high-strength alloy steel electric cutting machine far away from the opening state.
Reference numerals: the cutting is pulled out and is removed drilling 1, and the cutting is pulled out mechanical head 2, and base 3, first special type high strength alloy steel electric cutting machines 4, second special type high strength alloy steel electric cutting machines 5, electrical control equipment 6, anchor rope stock 7, electric machines control lever 8, motor 9, swivel bearing 10, rotary disk back gear 11, blade disc back gear 12 on the high strength alloy steel, blade disc 13 on the high strength alloy steel, blade disc 14 under the high strength alloy steel.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.
Example 1
A cutting and pulling mechanical head for cutting off and pulling out an anchor rope and an anchor rod close to a foundation pit comprises a base 3, a first special high-strength alloy steel electric cutting machine 4 and a second special high-strength alloy steel electric cutting machine 5. The upper part of the base 3 is connected with a lifting mechanism and an electrical control device 6, and a first special high-strength alloy steel electric cutting machine 4 and a second special high-strength alloy steel electric cutting machine 5 are installed on a mounting plate at the lower part of the base 3.
The first special high-strength alloy steel electric cutting machine 4 and the second special high-strength alloy steel electric cutting machine 5 respectively comprise an electric machine control rod 8, a motor 9, a rotary bearing 10, a rotary disc back gear 11, a high-strength alloy steel upper cutter disc back gear 12, a high-strength alloy steel upper cutter disc 13 and a high-strength alloy steel lower cutter disc 14. The electric machine control rod 8 is fixed on the mounting plate at the lower part of the base 3, a control circuit is arranged in the electric machine control rod 8, one end of the control circuit is connected with the electric control equipment 6, and the other end of the control circuit is connected with the motor 9.
The motor 9 and the slewing bearing 10 are mounted on the electric implement control lever 8, and the motor 9 drives the slewing ring back gear 11 mounted on the slewing bearing 10 to rotate. The rotating disc back gear 11 is meshed with the high-strength alloy steel upper cutter disc back gear 12, and the rotating disc back gear 11 drives the high-strength alloy steel upper cutter disc back gear 12 to rotate through meshing, so that the high-strength alloy steel upper cutter disc 13 is driven to rotate relative to the high-strength alloy steel lower cutter disc 14.
In the embodiment, the first special high-strength alloy steel electric cutting tool 4 and the second special high-strength alloy steel electric cutting tool 5 are formed by combining a high-strength alloy cutter and an electric tool, and the high-strength alloy steel upper cutter 13 is pushed to rotate towards the high-strength alloy steel lower cutter 14 or to rotate away from the high-strength alloy steel lower cutter 14 by utilizing the mutual meshing of the rotary disk back gear 11 on the electric tool control rod 8 and the high-strength alloy steel upper cutter back gear 12.
Example 2
The present embodiment is different from embodiment 1 in that: the high-strength alloy steel upper cutter disc 13 is hinged to the high-strength alloy steel lower cutter disc 14 through a high-strength bolt, the high-strength bolt is installed on a mounting plate on the lower portion of the base 3, the high-strength alloy steel lower cutter disc 14 is fixed on the mounting plate on the lower portion of the base 3, the high-strength alloy steel upper cutter disc 13 can rotate around the high-strength bolt, and the stopping safety pins are arranged at two ends of a gear 12 on the back of the high-strength alloy steel upper cutter disc and limit the rotation angle.
The inboard of blade disc 14 all sets up arc edging under high strength alloy steel top cutter disc 13 and the high strength alloy steel, the arc radius of edging in high strength alloy steel top cutter disc 13 is greater than the arc radius of edging in high strength alloy steel blade disc 14, be convenient for bite tightly and cut the anchor rope stock, outer arc turning moment produces huge inner arc cutting force under the same turning moment, utilize inner arc cutting force to make first special high strength alloy steel electric cutting machine 4 and second special high strength alloy steel electric cutting machine 5 bite tightly or cut off the anchor rope stock.
Example 3
The method for cutting off and pulling out the anchor cable and the anchor rod close to the foundation pit comprises the following steps: s1, determining the concrete position and direction of the anchor rod of the anchor cable according to the basic data of the anchor rod of the peripheral anchor cable and by combining geophysical prospecting;
s2, drilling a hole by adopting a rotary drilling bit, and after the hole is drilled to the anchor cable position, lifting the rotary drilling bit to form a cutting and removing drilling hole 1;
s3, the cutting and pulling mechanical head 2 is placed into the cutting and pulling drill hole 1 to reach the position of an anchor cable, two motors 9 of a first special high-strength alloy steel electric cutting tool 4 and a second special high-strength alloy steel electric cutting tool 5 are controlled to drive a back gear of a rotating disc to rotate, a high-strength alloy steel upper cutter disc 13 is driven to rotate away from a high-strength alloy steel lower cutter disc 14, the high-strength alloy steel upper cutter disc 13 and the high-strength alloy steel lower cutter disc 14 are opened, and the two motors 9 are closed; hooking the anchor cable anchor rod between a high-strength alloy steel upper cutter disc 13 and a high-strength alloy steel lower cutter disc 14, controlling two motors 9 to drive a back gear of a rotating disc to rotate, driving the high-strength alloy steel upper cutter disc 13 to rotate close to the high-strength alloy steel lower cutter disc 14, biting the hooked anchor cable anchor rod, and closing the two motors 9;
s4, lifting the cutting and pulling-out mechanical head 2 to a state that an anchor cable and an anchor rod are tensioned, starting a motor 9 of a second special high-strength alloy steel electric cutting machine 5, continuously driving a high-strength alloy steel upper cutter disc to be close to a high-strength alloy steel lower cutter disc to rotate until the anchor cable and the anchor rod are cut off, and closing the motor 9 of the second special high-strength alloy steel electric cutting machine 5;
and S5, lifting the cutting and pulling-out mechanical head 2, wherein the lifting tension is greater than the anchoring force of the residual anchor cable, the anchoring section is gradually loosened, and the residual anchor cable anchor rod is pulled out of the cutting and pulling-out drill hole 1 through the first special high-strength alloy steel electric cutting machine 4.
In this embodiment, the first special high-strength alloy steel electric cutting tool 4 and the second special high-strength alloy steel electric cutting tool 5 belong to electric parallel control, the first special high-strength alloy steel electric cutting tool 4 is used for clenching the anchor cable, and the second special high-strength alloy steel electric cutting tool 5 is used for cutting the anchor cable. The first special high-strength alloy steel electric cutting machine 4 is small in rotation angle and small in torque, and is mainly used for tightly biting an anchor cable and an anchor rod. The second special high-strength alloy steel electric cutting machine 5 is large in rotation angle and large in torque, and can cut the anchor cable and the anchor rod after being gripped.
Example 4
The present embodiment is different from embodiment 3 in that: in the step 3, the anchor cable is hooked by a movable bolt hook and lifted upwards, and the anchor cable anchor rod is hooked between the high-strength alloy steel upper cutter disc 13 and the high-strength alloy steel lower cutter disc 14. The direction and height of the movable bolt hook can be controlled manually.
Example 5
The present embodiment is different from embodiment 3 in that: in the process that the second special high-strength alloy steel electric cutting machine 5 cuts the anchor rope and the anchor rod in the step 4, the mechanical head 2 is repeatedly lifted, cut and removed, and the anchor rope and the anchor rod are judged to be cut off through reduction of lifting resistance.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. Cut off and pull out cutting of closing on foundation ditch anchor rope stock and pull out mechanical head, its characterized in that: the cutting machine comprises a base, a first special high-strength alloy steel electric cutting machine tool and a second special high-strength alloy steel electric cutting machine tool; the upper part of the base is connected with a lifting mechanism and an electrical control device, and a first special high-strength alloy steel electric cutting machine and a second special high-strength alloy steel electric cutting machine are arranged on a mounting plate at the lower part of the base;
the first special high-strength alloy steel electric cutting machine and the second special high-strength alloy steel electric cutting machine respectively comprise an electric machine control rod, a motor, a rotating bearing, a rotating disk back gear, a high-strength alloy steel upper cutter head and a high-strength alloy steel lower cutter head; the electric machine control rod is fixed on the mounting plate at the lower part of the base, a control circuit is arranged in the electric machine control rod, one end of the control circuit is connected with the electric control equipment, and the other end of the control circuit is connected with the motor;
the motor and the rotary bearing are arranged on a control rod of the electric machine tool, and the motor drives a back gear of the rotary disk arranged on the rotary bearing to rotate; the back gear of the rotating disc is meshed with the back gear of the high-strength alloy steel upper cutter disc, and the back gear of the rotating disc drives the back gear of the high-strength alloy steel upper cutter disc to rotate through meshing so as to drive the high-strength alloy steel upper cutter disc to rotate relative to the high-strength alloy steel lower cutter disc.
2. The cutting and pulling mechanical head for cutting off and pulling out anchor bolts of anchor cables close to a foundation pit according to claim 1, wherein: the high-strength alloy steel upper cutter disc is hinged with the high-strength alloy steel lower cutter disc through a high-strength bolt, the high-strength bolt is installed on a base lower portion installation plate, the high-strength alloy steel lower cutter disc is fixed on the base lower portion installation plate, the high-strength alloy steel upper cutter disc can rotate around the high-strength bolt, and stopping safety pins are arranged at two ends of a gear on the back of the high-strength alloy steel upper cutter disc; the inner sides of the high-strength alloy steel upper cutter disc and the high-strength alloy steel lower cutter disc are both provided with arc-shaped edging, and the arc-shaped radius of the edging in the high-strength alloy steel upper cutter disc is larger than that of the edging in the high-strength alloy steel lower cutter disc.
3. The method for cutting off and removing anchor bolts of anchor cables close to a foundation pit adopts the cutting and removing mechanical head in the claim 1 or 2, and is characterized in that: the method comprises the following steps: s1, determining the concrete position and direction of the anchor rod of the anchor cable according to the basic data of the anchor rod of the peripheral anchor cable and by combining geophysical prospecting;
s2, drilling a hole by adopting a rotary drilling bit, and after the hole is drilled to the anchor cable position, lifting the rotary drilling bit to form a cutting and pulling hole;
s3, the cutting and pulling mechanical head is placed into the cutting and pulling drill hole to reach the position of an anchor cable, two motors of a first special high-strength alloy steel electric cutting tool and a second special high-strength alloy steel electric cutting tool are controlled to drive a back gear of a rotating disc to rotate, a high-strength alloy steel upper cutter disc is driven to rotate away from a high-strength alloy steel lower cutter disc, the high-strength alloy steel upper cutter disc and the high-strength alloy steel lower cutter disc are opened, and the two motors are closed; hooking the anchor cable anchor rod between a high-strength alloy steel upper cutter disc and a high-strength alloy steel lower cutter disc, controlling two motors to drive a back gear of a rotating disc to rotate, driving the high-strength alloy steel upper cutter disc to rotate close to the high-strength alloy steel lower cutter disc, tightly biting the hooked anchor cable anchor rod, and closing the two motors;
s4, lifting the cutting and pulling mechanical head to a state that the anchor cable and the anchor rod are tensioned, starting a motor of a second special high-strength alloy steel electric cutting machine, continuously driving a high-strength alloy steel upper cutter disc to rotate close to a high-strength alloy steel lower cutter disc until the anchor cable and the anchor rod are cut off, and closing the motor of the second special high-strength alloy steel electric cutting machine;
and S5, lifting the cutting and pulling mechanical head, wherein the lifting tension is greater than the anchoring force of the rest anchor cable, the anchoring section gradually loosens, and the rest anchor cable anchor rod is pulled out of the cutting and pulling drill hole by a first special high-strength alloy steel electric cutting machine.
4. The method of cutting and extracting anchor bolts adjacent to a foundation pit of claim 3, wherein: in the step S3, the anchor cable is hooked by the movable bolt hook and lifted upwards, and the anchor cable anchor rod is hooked between the high-strength alloy steel upper cutter disc and the high-strength alloy steel lower cutter disc.
5. The method of cutting and extracting anchor bolts adjacent to a foundation pit of claim 3, wherein: in the process that the second special high-strength alloy steel electric cutting machine cuts the anchor rod of the anchor cable in the step S4, the mechanical head is lifted and cut repeatedly, and the anchor rod of the anchor cable is judged to be cut by reducing the lifting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110433840.7A CN113510298B (en) | 2021-04-22 | 2021-04-22 | Cutting and pulling mechanical head and method for cutting off and pulling anchor cable and anchor rod close to foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110433840.7A CN113510298B (en) | 2021-04-22 | 2021-04-22 | Cutting and pulling mechanical head and method for cutting off and pulling anchor cable and anchor rod close to foundation pit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113510298A CN113510298A (en) | 2021-10-19 |
| CN113510298B true CN113510298B (en) | 2022-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110433840.7A Active CN113510298B (en) | 2021-04-22 | 2021-04-22 | Cutting and pulling mechanical head and method for cutting off and pulling anchor cable and anchor rod close to foundation pit |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5590470A (en) * | 1995-02-22 | 1997-01-07 | Electroline Corp. | Cable cutting tool having an improved cutting blade |
| CN101838988A (en) * | 2010-05-10 | 2010-09-22 | 昆明捷程桩工有限责任公司 | Comprehensive construction method for extracting anchor cable |
| CN108838304A (en) * | 2018-07-10 | 2018-11-20 | 中铁隧道集团二处有限公司 | A kind of cutting construction method of anchor cable cutter |
| CN212070608U (en) * | 2020-04-14 | 2020-12-04 | 常州千手工程机械有限公司 | Steel scissors |
-
2021
- 2021-04-22 CN CN202110433840.7A patent/CN113510298B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5590470A (en) * | 1995-02-22 | 1997-01-07 | Electroline Corp. | Cable cutting tool having an improved cutting blade |
| CN101838988A (en) * | 2010-05-10 | 2010-09-22 | 昆明捷程桩工有限责任公司 | Comprehensive construction method for extracting anchor cable |
| CN108838304A (en) * | 2018-07-10 | 2018-11-20 | 中铁隧道集团二处有限公司 | A kind of cutting construction method of anchor cable cutter |
| CN212070608U (en) * | 2020-04-14 | 2020-12-04 | 常州千手工程机械有限公司 | Steel scissors |
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| Publication number | Publication date |
|---|---|
| CN113510298A (en) | 2021-10-19 |
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