CN110468672B - Hand-held well lid milling machine - Google Patents
Hand-held well lid milling machine Download PDFInfo
- Publication number
- CN110468672B CN110468672B CN201910671909.2A CN201910671909A CN110468672B CN 110468672 B CN110468672 B CN 110468672B CN 201910671909 A CN201910671909 A CN 201910671909A CN 110468672 B CN110468672 B CN 110468672B
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- positioning
- wheel disc
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- 238000003801 milling Methods 0.000 title claims abstract description 161
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000007689 inspection Methods 0.000 description 12
- 238000005520 cutting process Methods 0.000 description 9
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
- E01C23/085—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
- E01C23/088—Rotary tools, e.g. milling drums
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Road Repair (AREA)
Abstract
The invention discloses a hand-held well lid milling machine which comprises a hand-held frame, a positioning mechanism and a milling mechanism, wherein the positioning mechanism comprises a lifting screw rod arranged on the hand-held frame, a positioning bracket and a tensioning assembly for propping against a well wall, the lifting screw rod is in threaded fit with and coaxial with the positioning bracket, the tensioning assembly is distributed in at least three groups along the circumferential direction of the positioning bracket at equal intervals, and the milling mechanism comprises a milling wheel disc arranged on the hand-held frame and a motor for driving the milling wheel disc to rotate. The invention has the advantages of positioning function, simple structure, small volume and light weight, and can be used for milling and planing well covers in narrow spaces.
Description
Technical Field
The invention relates to a milling device, in particular to a hand-held well lid milling machine.
Background
In cities, because of the need of water supply, electric power, telecommunication, gas pipelines and the like, a plurality of inspection wells are arranged, and the weakest and most easily damaged places of the inspection wells are inspection well cover seats and edge pavement. The technical scheme for repairing the manhole cover seat and the edge is that the manhole cover seat is separated from the peripheral cement pavement firstly, and then the manhole cover seat is taken out by using a clamp.
At present, a slippage loader is mainly adopted for separating a well lid seat from a peripheral cement pavement to drive a well lid milling accessory, for example, a milling device of a well lid milling machine is disclosed in the patent, and the main defects are as follows: 1) The application occasion limit: because the skid steer loader is large in volume and cannot be used for well lid milling work in some narrow spaces, the skid steer loader is matched with a special hoisting clamp, the clamp is used for positioning, and then a positioning shaft of the milling machine is aligned with a positioning hole of the clamp for milling; 2) The noise is large: noise of the skid steer loader and noise of the well cover milling accessory milling road surface; 3) The cost is high: skid steer loaders and accessories are expensive to manufacture.
Disclosure of Invention
The invention aims to provide a hand-held well lid milling machine with a positioning function, which has the advantages of simple structure, small volume and light weight, and can be used for well lid milling in narrow space.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a hand-held well lid milling machine, includes hand frame, positioning mechanism and milling mechanism, and positioning mechanism is including locating the lifting screw of hand frame, and the locating support and the tensioning assembly who is used for the tight wall of a well in top, lifting screw and locating support screw thread fit and coaxial, tensioning assembly are equidistant three sets of at least along locating support circumference distribution, and milling mechanism is including locating the milling rim plate of hand frame and drive milling rim plate pivoted motor.
The lifting screw is in threaded fit with the positioning support to achieve a lifting function, the distance between the milling wheel disc and the ground can be adjusted before milling, a certain safety distance between the milling wheel disc and the ground is guaranteed, preparation is made for starting the milling wheel disc, and requirements for milling circular cutting and circular cutting depth can be met. When milling the ground, the milling depth is determined according to the lifting height of the lifting screw, so that the matching length of the lifting screw and the positioning bracket needs to meet a certain milling depth. The positioning support can be positioned at the center of the inspection well by uniformly distributing at least three groups of tensioning assemblies, and the positioning support is not limited to three groups of tensioning assemblies, can be uniformly distributed in four groups, five groups and the like, and can meet the positioning requirement by only positioning the positioning support at the center of the inspection well.
When the milling machine is used, the positioning support is overlapped with the center of the wellhead through the positioning mechanism, the tensioning assembly is propped against the well wall, the motor is started, the hand-held frame is controlled to rotate manually, and the milling wheel disc mills the ground until milling work is completed.
Preferably, the milling wheel discs are provided with even groups, each group of milling wheel discs is provided with a group of motors, and the even groups of milling wheel discs are arranged at equal intervals along the circumference of the positioning bracket. It should be noted that the number of the milling wheel discs is an even number, namely 2, 4.2n, n is 1,2, 3.and the same interval is set, so that the stability is high, the control is convenient, and meanwhile, the milling wheel discs are ensured to be on the same circumference, and the staggered milling is avoided. Preferably, the milling mechanism is provided with two groups of milling wheel discs, each group of milling wheel discs is provided with a group of motors, and the rotation directions of the two groups of motors are opposite.
Preferably, the direction of rotation of the motor is the same on the milling ring. The milling ring refers to a circumferential milling direction formed when the couple sets milling wheel discs run, and the motor rotates along the same direction of the milling ring, so that the same milling force direction is ensured, and the torque caused by cutting is reduced to the greatest extent.
Preferably, the milling wheel disc adopts a grinding wheel.
Preferably, the positioning bracket is provided with an inner hole in threaded fit with the lifting screw.
As the preferable scheme, tensioning assembly includes sleeve pipe, double-screw bolt and tensioning nut, and the locating support is fixed with the sleeve pipe, and the sleeve pipe cover is located the double-screw bolt outside, sleeve pipe and double-screw bolt clearance fit, tensioning nut revolve in the double-screw bolt, and tensioning nut external diameter is greater than the sleeve pipe internal diameter. When the milling machine is used, the stud is moved to the end part of the stud to prop against the well wall, and then the end part of the stud is propped against the well wall by screwing the tensioning nut, so that the milling machine is prevented from slipping. The sleeve and the stud have certain lengths, and the stud can stretch along the sleeve to meet the positioning requirements of inspection well cover seats with different sizes and specifications.
Preferably, the end part of the stud is provided with a positioning head, the positioning head comprises a propping part and a vertical part, the propping part is a wedge-shaped block, and the vertical part is a square block vertical to the wedge-shaped block. After the well wall is propped up, the propping part can be embedded into the inner side of the well wall, so that friction force is increased, and the positioning head is prevented from slipping and rotating. The fixing mode of the positioning head and the stud is not limited, and the positioning head and the stud can be welded or connected through bolts.
Preferably, the milling wheel is movable along the hand frame. The arrangement meets the requirements of milling inspection well cover seats with different sizes and specifications. Preferably, a plurality of mounting holes are axially formed in two sides of the hand-held frame, the mounting holes are axially symmetrical along the positioning support, and the milling wheel disc is connected with the hand-held frame through bolts. Preferably, the mounting holes are equally spaced. Specifically, the milling mechanism comprises a connecting plate and an adapter plate, the hand rack is fixed with the adapter plate through bolts, the adapter plate is fixed with the connecting plate, the connecting plate is fixed with a motor, and an output shaft of the motor is fixed with a milling wheel disc.
Preferably, a reinforcing rib is arranged between the positioning bracket and the sleeve. So as to improve the connection strength and rigidity between the positioning bracket and the sleeve and prevent the deformation of the positioning bracket. Preferably, a reinforcing plate is arranged between the hand rack and the connecting plate. So as to improve the connection strength and rigidity between the hand rack and the milling mechanism and prevent the deformation of the hand rack.
Preferably, handles are arranged at two ends of the hand-held frame, the handles are cylindrical, and the hand-held frame is perpendicular to the handles. During milling, the handle is manually controlled to perform rotary milling.
The working steps of the invention are as follows:
step 1, firmly propping the inner wall of a wellhead by three positioning heads through rotating a tensioning nut, so as to realize positioning and ensure that a positioning bracket approximately coincides with the center of the wellhead;
Step 2, adjusting the distance between the milling wheel disc and the milling ground through the lifting screw and the positioning bracket, ensuring that the milling wheel disc and the milling ground have a safe distance, and preparing for starting the milling wheel disc;
Step 3, starting the symmetrical motors, and starting milling of the milling wheel disc;
and 4, manually controlling the handle to rotate, and determining the milling depth of the milling wheel disc and the ground according to the length of the lifting screw matched with the positioning bracket, so as to finish milling work.
The invention has the advantages that:
1. the well head center is positioned by the positioning mechanism, the positioning head is propped against the well wall, the coincidence between the center of the hand milling machine and the center of the well head is ensured, the hand milling machine does not need to be matched with a special hoisting clamp, the structure is simple, the weight is light, the size is small, the hand milling machine is suitable for manual operation, and the hand milling machine is suitable for well lid milling work in some narrow spaces.
2. The lifting screw is in threaded fit with the positioning support to achieve a lifting function, the distance between the milling wheel disc and the ground can be adjusted before milling, a certain safety distance between the milling wheel disc and the ground is guaranteed, preparation is made for starting the milling wheel disc, and requirements for milling circular cutting and circular cutting depth can be met.
3. The milling wheel discs are symmetrically arranged, and the rotation directions of the motors are opposite, so that the same milling force direction is ensured, and the torque caused by cutting is reduced to the greatest extent.
4. The milling wheel disc can move along the hand rack, the milling radius of the milling wheel disc is adjustable, and the milling wheel disc is suitable for inspection wells with different sizes and specifications.
5. The skid steer loader is not needed, the noise of the skid steer loader and the well cover milling accessory milling road surface is reduced, and the cost is reduced.
Drawings
Fig. 1 is a perspective view of a milling machine.
Fig. 2 is an elevation view of a milling machine.
Fig. 3 is a top view of the milling machine.
The marks in the figure are as follows: the hand-held frame 1, the mounting hole 11, the handle 12, the positioning mechanism 2, the lifting screw 21, the positioning bracket 22, the tensioning assembly 23, the sleeve 231, the stud 232, the tensioning nut 233, the positioning head 234, the abutting portion 2341, the vertical portion 2342, the reinforcing rib 24, the milling mechanism 3, the milling wheel disc 31, the motor 32, the connecting plate 33, the adapter plate 34 and the reinforcing plate 4.
Detailed Description
The structure to which the present invention relates or these terms of technology are further described below. These descriptions are merely illustrative of how the present invention may be implemented and are not intended to be in any way limiting.
The invention is further described below with reference to the drawings and the detailed description. In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left" and "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the positions or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1-3, a hand-held well lid milling machine comprises a hand-held frame 1, a positioning mechanism 2 and a milling mechanism 3, wherein the positioning mechanism 1 comprises a lifting screw 21 arranged on the hand-held frame 1, a positioning support 22 and a tensioning assembly 23 used for propping up against a well wall, the positioning support 22 is provided with an inner hole in threaded fit with the lifting screw 21, the lifting screw 21 is in threaded fit with the positioning support 22 and is coaxial, the tensioning assembly 23 is distributed at least three groups at equal intervals along the circumferential direction of the positioning support 22, the milling mechanism 3 comprises a milling wheel disc 31 arranged on the hand-held frame 1 and a motor 32 used for driving the milling wheel disc 31 to rotate, and the milling mechanism 3 is provided with the milling wheel disc 31.
The lifting screw 21 and the positioning support 22 are in threaded fit to achieve a lifting function, the distance between the milling wheel disc 31 and the ground can be adjusted before milling, a certain safety distance between the milling wheel disc 31 and the ground is guaranteed, preparation is made for starting the milling wheel disc 31, and requirements for milling circular cutting and circular cutting depth can be achieved. When milling the ground, the milling depth is determined according to the lifting height of the lifting screw, so that the matching length of the lifting screw 21 and the positioning bracket 22 needs to meet a certain milling depth. The positioning support 22 can be positioned at the center of the inspection well by uniformly distributing at least three groups of tensioning assemblies 23, and of course, the positioning support is not limited to three groups, and can be four groups, five groups and the like which are uniformly distributed, and the positioning support 22 is positioned at the center of the inspection well only to meet the positioning requirement.
When the milling machine is used, the positioning support 22 is overlapped with the center of the wellhead through the positioning mechanism 2, the tensioning assembly 23 is propped against the well wall, the motor 32 is started, the hand-held frame 1 is manually controlled to rotate, and the milling wheel disc 31 mills the ground until the milling work is completed.
As a specific embodiment, as shown in fig. 1, the milling disks 31 have an even number of groups, each group of milling disks 31 is provided with a group of motors 32, and the even number of groups of milling disks 31 are arranged at equal intervals along the circumference of the positioning bracket 22. It should be noted that, the number of the milling wheel discs 31 is an even number, that is, 2,4··2n, n is 1,2,3·and is equally spaced, so that the stability is high, the control is convenient, and meanwhile, the milling wheel discs 31 are ensured to be on the same circumference, so that the staggered milling is avoided. In this embodiment, two sets of milling wheels 31 and two sets of motors 32 are selected, and at this time, the two sets of motors 32 rotate in opposite directions, one counter clockwise and the other counter clockwise, so that the milling operation can be completed. Milling wheel 31 is a grinding wheel.
The direction of rotation of the motor 32 is the same on the milling ring. The milling ring refers to a circumferential milling direction formed when the couple of milling wheel discs run, and the motor 32 rotates along the same direction of the milling ring, so that the milling force direction is ensured to be the same, and the torque caused by cutting is reduced to the greatest extent.
As a specific embodiment, as shown in fig. 1, the tensioning assembly 23 includes a sleeve 231, a stud 232, and a tensioning nut 233, where the positioning bracket 22 is fixed to the sleeve 231, the sleeve 231 is sleeved outside the stud 232, the sleeve 231 is in clearance fit with the stud 232, the tensioning nut 233 is screwed to the stud 232, and the outer diameter of the tensioning nut 233 is larger than the inner diameter of the sleeve 231. When the milling machine is used, the stud 232 is moved to the end of the stud 232 to prop against the well wall, and the end of the stud 232 is propped against the well wall by screwing the tensioning nut 233, so that the milling machine is prevented from slipping. The sleeve 231 and the stud 232 have certain lengths, and the stud 232 can stretch and retract along the sleeve 231, so that the positioning requirements of inspection well cover seats with different sizes and specifications are met.
As a specific embodiment, as shown in fig. 2, the positioning head 234 is set at the end of the stud 232, and the positioning head 234 includes a pressing portion 2341 and a vertical portion 2342, where the pressing portion 2341 is a wedge, and the vertical portion 2342 is a square perpendicular to the wedge. After the well wall is propped up, the propping part 2341 can be embedded into the inner side of the well wall, so that friction force is increased, and the positioning head 234 is prevented from slipping and rotating. The fixing manner of the positioning head 234 and the stud 232 is not limited, and may be welding or bolting.
As a specific embodiment, as shown in fig. 1-3, milling wheel disc 31 is movable along the hand frame 1. The milling radius of the milling wheel disc 31 is adjustable, so that the requirements of milling inspection well cover seats with different sizes and specifications are met. A plurality of mounting holes 11 are axially formed in two sides of the walking frame 1, the mounting holes 11 are axially symmetrical along the positioning support 22, and the mounting holes 11 are distributed at equal intervals. The milling wheel disc 31 is connected with the hand-held machine frame 1 through bolts, specifically, the milling mechanism 3 comprises a connecting plate 33 and an adapter plate 34, the hand-held machine frame 1 is fixed with the adapter plate 34 through bolts, the adapter plate 34 is fixed with the connecting plate 33, the connecting plate 34 is fixed with a motor 32, and an output shaft of the motor is fixed with the milling wheel disc 31.
As shown in fig. 1, a reinforcing rib 24 is provided between the positioning bracket 22 and the sleeve 231. To increase the strength and rigidity of the connection between the positioning bracket 22 and the sleeve 231, preventing deformation thereof. A reinforcing plate 4 is arranged between the hand frame 1 and the connecting plate 33. So as to improve the connection strength and rigidity between the hand frame 1 and the milling mechanism 3 and prevent the deformation thereof.
As shown in fig. 1, handles 12 are arranged at two ends of the hand-held frame 1, the handles 12 are cylindrical, the hand-held frame 1 is perpendicular to the handles 12, and the handles 12 are axially symmetrically arranged along the positioning support 22. During milling, the handle 12 is manually controlled to perform rotary milling.
The working steps of the invention are as follows:
Step 1, by rotating the tensioning nut 233, the three positioning heads 234 firmly press against the inner wall of the wellhead to realize positioning, and the positioning bracket 22 is ensured to be approximately coincident with the center of the wellhead;
Step 2, adjusting the distance between the milling wheel disc 31 and the milling ground through the lifting screw 21 and the positioning bracket 22, ensuring that the milling wheel disc 31 has a safe distance from the milling ground, and preparing for starting the milling wheel disc 31;
Step 3, starting the symmetrical motors 32, and starting milling the wheel disc 31;
and 4, manually controlling the handle 12 to rotate, and determining the milling depth of the milling wheel disc 31 and the ground according to the length of the lifting screw 21 matched with the positioning bracket 22, so as to finish milling work.
The invention shown and described herein may be practiced without any of the elements, limitations specifically disclosed herein. The terms and expressions which have been employed are used as terms of description and not of limitation, and there is no intention in the use of such terms and expressions of excluding any equivalents of the features shown and described or portions thereof, and it is recognized that various modifications are possible within the scope of the invention. It is therefore to be understood that while the present invention has been specifically disclosed by various embodiments and optional features, modification and variation of the concepts herein described may be resorted to by those skilled in the art, and that such modifications and variations are considered to be within the scope of this invention as defined by the appended claims.
The contents of the articles, patents, patent applications, and all other documents and electronically available information described or documented herein are incorporated by reference in their entirety to the same extent as if each individual publication was specifically and individually indicated to be incorporated by reference. Applicants reserve the right to incorporate any and all materials and information from any such articles, patents, patent applications, or other documents.
Claims (1)
1. The hand-held well lid milling machine is characterized by comprising a hand-held frame, a positioning mechanism and a milling mechanism, wherein the positioning mechanism comprises a lifting screw rod arranged on the hand-held frame, a positioning bracket and a tensioning assembly for propping against a well wall, the lifting screw rod is in threaded fit with the positioning bracket and coaxial, the tensioning assembly is distributed in at least three groups along the circumference of the positioning bracket at equal intervals, and the milling mechanism comprises a milling wheel disc arranged on the hand-held frame and a motor for driving the milling wheel disc to rotate;
The milling wheel discs are provided with even groups, each group of milling wheel discs is provided with a group of motors, and the even groups of milling wheel discs are arranged at equal intervals along the circumferential direction of the positioning bracket;
The rotation directions of the motors are the same on the milling ring;
the tensioning assembly comprises a sleeve, a stud and a tensioning nut, the positioning bracket is fixed with the sleeve, the sleeve is sleeved outside the stud, the sleeve is in clearance fit with the stud, the tensioning nut is screwed on the stud, and the outer diameter of the tensioning nut is larger than the inner diameter of the sleeve;
The end part of the stud is provided with a positioning head, the positioning head comprises a propping part and a vertical part, the propping part is a wedge-shaped block, and the vertical part is a square block vertical to the wedge-shaped block;
the milling wheel disc is movable along the hand rack;
The two sides of the hand-held frame are provided with a plurality of mounting holes along the axial direction, the mounting holes are axisymmetric along the positioning bracket, the milling mechanism comprises a connecting plate and an adapter plate, the hand-held frame is fixed with the adapter plate through bolts, the adapter plate is fixed with the connecting plate, the connecting plate is fixed with a motor, and an output shaft of the motor is fixed with a milling wheel disc;
A reinforcing rib is arranged between the positioning bracket and the sleeve;
a reinforcing plate is arranged between the hand rack and the connecting plate;
handles are arranged at two ends of the hand-held rack, the handles are cylindrical, the hand-held rack is perpendicular to the handles, and the handles are axisymmetric along the positioning support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910671909.2A CN110468672B (en) | 2019-07-24 | 2019-07-24 | Hand-held well lid milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910671909.2A CN110468672B (en) | 2019-07-24 | 2019-07-24 | Hand-held well lid milling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110468672A CN110468672A (en) | 2019-11-19 |
| CN110468672B true CN110468672B (en) | 2024-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910671909.2A Active CN110468672B (en) | 2019-07-24 | 2019-07-24 | Hand-held well lid milling machine |
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| CN (1) | CN110468672B (en) |
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| CN204435186U (en) * | 2015-01-17 | 2015-07-01 | 燕增学 | A kind of flexible pavement side direction milling machine |
| KR101576531B1 (en) * | 2015-09-11 | 2015-12-10 | 주식회사 태강디앤씨 | A cutting machine using a end mill for repair work of a manhole |
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| CN205765033U (en) * | 2016-05-26 | 2016-12-07 | 威斯塔技术（北京）有限公司 | A kind of top changeable type well lid milling machine localizer |
| CN208440960U (en) * | 2018-06-08 | 2019-01-29 | 宜昌建林园林工程有限公司 | Bituminous pavement cutter device around a kind of well lid |
| CN211036648U (en) * | 2019-07-24 | 2020-07-17 | 浙江大学山东工业技术研究院 | Hand-held well lid milling machine |
-
2019
- 2019-07-24 CN CN201910671909.2A patent/CN110468672B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200319744Y1 (en) * | 2003-04-11 | 2003-07-16 | (주) 시흥 | Improvement in vertical cutter for manhole repairing |
| CN202039281U (en) * | 2011-03-16 | 2011-11-16 | 曹振华 | Pavement milling machine |
| CN204097846U (en) * | 2014-08-31 | 2015-01-14 | 李军 | A kind of Bituminous Surface Jumbo Milling And Planing Machine |
| CN104562906A (en) * | 2014-12-30 | 2015-04-29 | 浙江联运环境工程有限公司 | Device and method for repairing manhole cover |
| CN204435186U (en) * | 2015-01-17 | 2015-07-01 | 燕增学 | A kind of flexible pavement side direction milling machine |
| KR101576531B1 (en) * | 2015-09-11 | 2015-12-10 | 주식회사 태강디앤씨 | A cutting machine using a end mill for repair work of a manhole |
| CN205529826U (en) * | 2016-04-08 | 2016-08-31 | 芜湖山猫工程机械有限责任公司 | Mill plane ware |
| CN205765033U (en) * | 2016-05-26 | 2016-12-07 | 威斯塔技术（北京）有限公司 | A kind of top changeable type well lid milling machine localizer |
| CN208440960U (en) * | 2018-06-08 | 2019-01-29 | 宜昌建林园林工程有限公司 | Bituminous pavement cutter device around a kind of well lid |
| CN211036648U (en) * | 2019-07-24 | 2020-07-17 | 浙江大学山东工业技术研究院 | Hand-held well lid milling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110468672A (en) | 2019-11-19 |
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