CN210975484U - Circular manhole cover hole cutting machine of road - Google Patents
Circular manhole cover hole cutting machine of road Download PDFInfo
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- CN210975484U CN210975484U CN201921667784.8U CN201921667784U CN210975484U CN 210975484 U CN210975484 U CN 210975484U CN 201921667784 U CN201921667784 U CN 201921667784U CN 210975484 U CN210975484 U CN 210975484U
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Abstract
The utility model discloses a circular well lid hole cutting machine of road, circular well lid hole cutting machine of road includes frame, mount pad and cutting device, wherein, the mount pad along from top to bottom movable mounting in the frame, cutting device include along from top to bottom to the axis rotate install in the blade disc subassembly of mount pad below, the blade disc subassembly includes along the level to the blade disc that extends, the lower terminal surface of blade disc is equipped with a plurality of edges the blade that blade disc circumference interval set up, it is a plurality of the blade is followed but the radial position synchronization adjustment of blade disc, so that circular well lid hole cutting machine of road adapts to the well lid hole of the different diameter sizes of cutting shaping. The well cover hole is convenient to expand or be constructed again when the road is reformed and the street is renovated.
Description
Technical Field
The utility model relates to a well lid cutting technical field, in particular to circular well lid hole cutting machine of road.
Background
When road transformation, street renovation, need be to the well lid that has installed on the road be under construction again, often involve the dismantlement of road well lid and the expansion of well lid hole, or the well lid hole of road carries out the reaming, among the prior art, the cutting size of well lid cutting machine is generally fixed unchangeable, can't deal with the operating mode under the special circumstances, has restricted well lid cutting machine's application scope.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a circular well lid hole cutting machine of road aims at solving prior art, and the cutting size of well lid cutting machine is not adjustable, has restricted the application scope of well lid cutting machine.
In order to achieve the above object, the utility model provides a circular well lid hole cutting machine of road, include:
a machine base;
the mounting seat is movably mounted on the base along the vertical direction; and the number of the first and second groups,
cutting device, including along from top to bottom the axis rotate install in the blade disc subassembly of mount pad below, the blade disc subassembly includes along the level to the blade disc that extends, the lower terminal surface of blade disc is equipped with a plurality of edges the blade that blade disc circumference interval set up, it is a plurality of the blade is followed the radial position of blade disc is adjustable, so that the circular well lid hole cutting machine of road adapts to the well lid hole of the shaping different diameters size of cutting.
Optionally, a plurality of sliding grooves are formed in the cutter head at intervals in the circumferential direction, and each sliding groove extends in the radial direction of the cutter head;
the cutter head assembly further comprises a plurality of sliding blocks which are respectively and correspondingly arranged in the sliding grooves in a sliding mode;
the plurality of blades are respectively and fixedly arranged on the plurality of sliding blocks correspondingly.
Optionally, the cutterhead assembly further comprises a synchronous adjustment assembly, the synchronous adjustment assembly comprises:
the adjusting disc is rotatably arranged on the cutter disc and rotates coaxially with the cutter disc; and the number of the first and second groups,
and the connecting rods are correspondingly arranged between the sliding blocks and the adjusting disk respectively, one end of each connecting rod is hinged to the sliding block, and the other end of each connecting rod is hinged to the adjusting disk.
Optionally, an annular first mounting region is formed at the periphery of the adjusting disk, and a plurality of first mounting holes distributed at intervals along the circumferential direction of the adjusting disk are formed through the first mounting region;
the first mounting areas of the adjusting disc correspond to the parts projected on the sliding grooves to form a plurality of second mounting areas, the second mounting areas are respectively provided with a second mounting hole in a penetrating mode, and after the position of the blade is adjusted, at least one first mounting hole and one second mounting hole are arranged in a corresponding mode in the vertical direction;
the cutter head assembly further comprises a locking assembly, and the locking assembly is mounted in the first mounting hole and the second mounting hole and used for fixedly mounting the adjusting disc on the cutter head.
Optionally, the circular well lid hole cutting machine of road still includes first drive arrangement, first drive arrangement includes:
the driving motor is arranged on the mounting seat, is vertically arranged, and the main shaft extends downwards;
the motor driving wheel is arranged on a main shaft of the driving motor;
the cutter head driven wheel is fixed on the cutter head and rotates coaxially with the cutter head; and the number of the first and second groups,
the conveying belt is arranged between the cutter driven wheel and the motor driving wheel;
the driving motor drives the motor driving wheel to rotate, so that the cutter head is driven to rotate through the conveyor belt, and the blades can cut in a rotating mode.
Optionally, the circular well lid hole cutting machine of road still includes and is used for the direction the guide structure of activity from top to bottom of mount pad, guide structure includes mutual sliding fit's guide way and direction arch, the guide way and the direction is protruding, one of them is formed at the frame, another is formed at the mount pad.
Optionally, the length direction of the base is used as the left-right direction, and the cutting device is arranged at the left end of the base;
circular well lid hole cutting machine of road still includes second drive arrangement, second drive arrangement includes:
the crank rocker mechanism comprises a rocker frame which is hinged to the base and can swing left and right, the rocker frame is positioned above the mounting seat, and the rocker frame comprises a supporting rod which extends forwards and backwards; and the number of the first and second groups,
the driving connecting rod extends up and down, the upper end of the driving connecting rod is fixedly installed on the supporting rod, and the lower end of the driving connecting rod is hinged to the installation seat.
Optionally, the crank and rocker mechanism further comprises:
the crank is rotatably arranged on the machine base along a front-back axis and is positioned on the right side of the mounting base; and the number of the first and second groups,
and one end of the connecting rod is hinged to the crank, and the other end of the connecting rod is hinged to the supporting rod.
Optionally, a limiting column is arranged on the rear end face of the crank, and a rotating path is formed when the limiting column rotates along with the crank;
and a stopping part is formed on the base corresponding to the rotating path and used for limiting the rotating stroke of the crank.
Optionally, the lower end of the machine base is provided with a plurality of rollers.
The utility model provides an among the technical scheme, the circular manhole hole cutting machine of road is when the construction, cutting device follows the mount pad is in to the activity from top to bottom together, utilizes the setting to be in a plurality of terminal surface under the blade disc the blade cuts, can adjust a plurality ofly according to the operating mode of difference the blade is followed the radial position of blade disc realizes that the cutting size is adjustable, makes the circular manhole hole cutting machine of road adapts to the manhole hole of different diameters size, and application scope is bigger, and the construction is more convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic perspective view of an embodiment (an angle) of the road circular manhole cover cutting machine according to the present invention;
FIG. 2 is a perspective view of an embodiment (at another angle) of the road circular manhole cover cutting machine of FIG. 1;
FIG. 3 is a perspective view of the cutting device of FIG. 1 coupled to a first drive device;
FIG. 4 is a schematic perspective view of the synchronizing adjustment assembly of FIG. 1;
fig. 5 is a perspective view of the synchronization adjustment assembly of fig. 4 after adjusting the position of the blade.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Circular manhole cover hole cutting machine of |
31311 | |
| 1 | |
3132 | Connecting |
| 2 | Mounting seat | 4 | |
| 3 | |
41 | |
| 31 | |
42 | Motor |
| 311 | |
43 | Cutter driven |
| 3111 | |
44 | |
| 3112 | Sliding chute | 5 | |
| 31121 | |
511 | Rocker |
| 312 | |
512 | |
| 313 | Synchronous regulating |
513 | Connecting |
| 3131 | Adjusting |
52 | Driving connecting rod |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
When road transformation, street renovation, need be to the well lid that has installed on the road be under construction again, often involve the dismantlement of road well lid and the expansion of well lid hole, or the well lid hole of road carries out the reaming, among the prior art, the cutting size of well lid cutting machine is generally fixed unchangeable, can't deal with the operating mode under the special circumstances, has restricted well lid cutting machine's application scope. The utility model provides a circular well lid hole cutting machine of road, figure 1 to figure 5 do the utility model provides an embodiment of the circular well lid hole cutting machine of road.
Please refer to fig. 1 to 2 together, the circular manhole cover cutting machine 100 of road includes frame 1, mount pad 2 and cutting device 3, wherein, mount pad 2 along from top to bottom to movable mounting in frame 1, cutting device 3 include along from top to bottom to the axis rotate install in cutterhead assembly 31 of mount pad below, cutterhead assembly 31 includes along the level to the cutterhead 311 that extends, the lower terminal surface of cutterhead 311 is equipped with a plurality of edges blade 3111 that the circumference interval of cutterhead 311 set up, and is a plurality of blade 3111 is followed the radial position of cutterhead 311 is adjustable in step, so that the circular manhole cover cutting machine 100 of road adapts to the manhole cover hole of the different diameter sizes of cutting shaping.
The utility model provides an among the technical scheme, circular well lid hole cutting machine 100 of road is when the construction, cutting device 3 follows mount pad 2 is together to the activity from top to bottom, utilizes the setting to be in a plurality of terminal surface under the blade disc 311 blade 3111 cuts, can adjust a plurality ofly according to the operating mode of difference blade 3111 follows blade 31131's radial position realizes that the cutting size is adjustable, makes circular well lid hole cutting machine 100 of road adapts to the well lid hole of different diameters size, and application scope is bigger, and the construction is more convenient.
The mode that realizes blade 3111 follows radial activity of blade disc 311 has a lot of, in this embodiment, please refer to fig. 4, blade disc 311 is formed with a plurality of spouts 3112 along the interval in circumference, each spout 3112 all follows the radial extension setting of blade disc 311, blade disc subassembly 31 still includes respectively correspond slidable mounting in a plurality of slider 312 in the spout 3112, a plurality of blade 3111 corresponds fixed mounting respectively in a plurality of on the slider 312. The slider 312 can drive the blade 3111 is followed cutter head 311 is radial to be slided, simple structure, and processing is convenient.
It should be noted that a screw rod may be connected below each of the blades 3111 in a manner of rotating the screw rod, and the screw rod is rotated to move the cutter head 311, which will not be described in detail herein.
If each blade 3111 is adjusted alone, the operation is troublesome, the adjustment time is long, and the operation error is easy to occur to cause unsmooth cutting, in this embodiment, please refer to fig. 4, the cutter disc assembly 31 further includes a synchronous adjusting assembly 313, the synchronous adjusting assembly 313 includes an adjusting disc 3131 and a plurality of connecting rods 3132, wherein, the adjusting disc 3131 is rotatably installed in the cutter disc 311, and rotates coaxially with the cutter disc 311, a plurality of the connecting rods 3132 are respectively and correspondingly disposed between the sliding block 312 and the adjusting disc 3131, one end of each connecting rod 3132 is hinged and installed in the sliding block 312, and the other end is hinged and installed in the adjusting disc 3131. Rotate regulating disk 3131, it is a plurality of connecting rod 3132 along with regulating disk 3131 synchronous rotation, thereby it is a plurality of to drive blade 3111 synchronous motion, realize a plurality of blade 3111 is followed the radial position synchronization adjustment of blade disc 311, so set up and avoid the individual regulation to appear operating error, convenient operation saves operating time.
Furthermore, in the embodiment, the connecting rod 3132 is arc-shaped, so that when the adjusting disk 3131 is rotated, the arc-shaped structure is more easily attached to the adjusting disk 3131, and the adjusting range is wider.
In this embodiment, the cutter head 311 is rotated to cut the plurality of blades 3111, specifically, referring to fig. 3, the road circular manhole cover cutting machine 100 further includes a first driving device 4, and the first driving device 4 includes a driving motor 41, a motor driving wheel 42, a cutter head driven wheel 43, and a conveyor belt 44. Drive motor 41 is located mount pad 2, drive motor 41 is vertical placing, and main shaft downwardly extending, motor drive wheel 42 is located on drive motor 41's the main shaft, the blade disc is fixed in from driving wheel 43 blade disc 311, and with the coaxial rotation of blade disc 311, conveyer belt 44 is located the blade disc from driving wheel 43 with between the motor drive wheel 42, wherein, drive motor 41 drives motor drive wheel 42 rotates, thereby drives blade disc 311 rotates, so that blade 3111 rotary cutting. Drive the conveyer belt 44 through driving motor 41 and drive cutter head 311 and a plurality of the cutting is realized in the rotation of blade 3111, simple structure, simple to operate realizes the construction requirement of cutting machine easily.
In the construction process, the cutter head 311 rotates at a high speed, and in order to ensure that the positions of the blades 3111 are kept fixed during the high-speed rotation, in this embodiment, referring to fig. 5, a ring-shaped first installation region is formed at the periphery of the adjusting disk 3131, a plurality of first installation holes 31311 are formed through the first installation region, which are arranged at intervals along the circumferential direction of the adjusting disk 3131, a plurality of second installation regions are formed at the portions of the first installation region of the adjusting disk 3131, which are projected onto the sliding grooves 3112, and a plurality of second installation holes 31121 are respectively formed through the second installation regions, after the position of the blades 3111 is adjusted, at least one of the first installation holes 31311 and the second installation holes 31121 are arranged in a vertical direction, the cutter head assembly 31 further includes a locking assembly, the locking assembly is installed in the first installation hole 31311 and the second installation holes 31121, for fixedly mounting the adjusting disc 3131 on the cutter disc 311. Therefore, when the cutter head 311 rotates at a high speed, the adjusting disc 3131 is kept relatively fixed with the cutter head, and smooth construction is guaranteed.
In this embodiment, the locking assembly is a bolt passing through the first mounting hole 31311 and the second mounting hole 31121 and a nut fixing the bolt. The number of the locking assemblies is not limited in the embodiment, and only one locking assembly can be arranged, or a plurality of locking assemblies can be arranged, so that the stability effect is ensured.
In the working process of the road circular manhole cover cutting machine 100, the cutting device 3 rotates to cut and slowly moves downwards, in this embodiment, the length direction of the machine base 1 is taken as the left-right direction, and the cutting device 3 is arranged at the left end of the machine base 1; circular well lid hole cutting machine 100 of road still includes second drive arrangement 5, second drive arrangement 5 includes crank rocker mechanism and drive connecting rod 52, crank rocker mechanism including articulated install in frame 1 and can follow left and right sides to wobbling rocker frame 511, rocker frame 511 is located the top of mount pad 2, rocker frame 511 includes along the front and back bracing piece that sets up to extending, drive connecting rod 52 sets up to extending from top to bottom along, drive connecting rod 52's upper end fixed mounting in the bracing piece, the lower extreme articulated install in mount pad 2. The arrangement is convenient to operate and control, the cutting device 3 can move up and down, and when the equipment is moved, the cutting device 3 can be lifted to the highest position and then falls down during construction, so that the equipment is convenient to carry.
Furthermore, in this embodiment, the crank and rocker mechanism further includes a crank 512 and a connecting rod 513, the crank 512 is rotatably mounted on the machine base 1 along a front-back axis and is located on the right side of the mounting base 2, one end of the connecting rod 513 is hinged to the crank 512, and the other end of the connecting rod is hinged to the supporting rod. The crank 512 is rotated, the connecting rod 513 moves along with the crank, the rocker frame 511 is driven to swing, the connecting rod 513 drives the mounting seat 2 to move up and down, and the crank rocker structure and the crank sliding block structure are combined in the arrangement, so that the crank and rocker structure is labor-saving and convenient to control.
In this embodiment, a limiting post is disposed on a rear end surface of the crank 512, the limiting post forms a rotation path when rotating along with the crank 512, and a stop portion is formed on the base 1 corresponding to the rotation path to limit a rotation stroke of the crank 512. The cutting device 3 can only move up and down along a designated stroke, specifically, in this embodiment, there are two limiting posts symmetrically disposed on the crank 512, and the stopping portions are two corresponding rib plates on the machine base 1. When the limiting columns are in contact with the stopping parts, the crank 512 cannot rotate continuously, a rotating stroke of the crank 512 is formed between the two limiting columns and the two stopping parts, and smooth cutting is guaranteed.
The mounting seat 2 has a movement stroke along the vertical direction, and in order to further limit the movement stroke and prevent the mounting seat 2 from shaking along the left-right direction, in this embodiment, the circular manhole cover cutting machine 100 further comprises a guide structure for guiding the mounting seat 2 to move up and down, the guide structure comprises a guide groove and a guide protrusion which are in sliding fit with each other, one of the guide groove and the guide protrusion is formed on the base 1, and the other is formed on the mounting seat 2. Through the guide way with the guide protrusion is mutually supported, makes mount pad 2 can only follow guide way up-and-down motion has guaranteed its direction of motion, prevents to move along other directions during the construction, causes blade 3111 damages or cuts badly.
It should be noted that the present embodiment does not limit the installation positions and the number of the guide grooves and the guide protrusions, specifically, in this embodiment, there are two guide protrusions respectively disposed above the motor driving wheel 42 and the cutter driven wheel 43, and two guide grooves are correspondingly disposed, so that when the mounting base 2 moves up and down, the cutting device 3 and the driving motor 41 are guided in position.
In order to facilitate the movement of the cutting machine, in this embodiment, the lower end of the machine base 1 is provided with a plurality of rollers. So that the movement is labor-saving and convenient.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a circular well lid hole cutting machine of road which characterized in that includes:
a machine base;
the mounting seat is movably mounted on the base along the vertical direction; and the number of the first and second groups,
cutting device, including along from top to bottom the axis rotate install in the blade disc subassembly of mount pad below, the blade disc subassembly includes along the level to the blade disc that extends, the lower terminal surface of blade disc is equipped with a plurality of edges the blade that blade disc circumference interval set up, it is a plurality of the blade is followed the radial position of blade disc is adjustable, so that the circular well lid hole cutting machine of road adapts to the well lid hole of the shaping different diameters size of cutting.
2. The road circular manhole cover cutting machine according to claim 1, wherein the cutter head is formed with a plurality of sliding grooves at intervals in the circumferential direction, each of the sliding grooves extending in the radial direction of the cutter head;
the cutter head assembly further comprises a plurality of sliding blocks which are respectively and correspondingly arranged in the sliding grooves in a sliding mode;
the plurality of blades are respectively and fixedly arranged on the plurality of sliding blocks correspondingly.
3. The circular manhole cover cutting machine according to claim 2, wherein the cutterhead assembly further comprises a synchronization adjustment assembly, comprising:
the adjusting disc is rotatably arranged on the cutter disc and rotates coaxially with the cutter disc; and the number of the first and second groups,
and the connecting rods are correspondingly arranged between the sliding blocks and the adjusting disk respectively, one end of each connecting rod is hinged to the sliding block, and the other end of each connecting rod is hinged to the adjusting disk.
4. The road circular manhole cutting machine of claim 3, wherein a ring-shaped first mounting area is formed at the periphery of the adjusting disk, and a plurality of first mounting holes are formed in the first mounting area at intervals along the circumferential direction of the adjusting disk;
the first mounting areas of the adjusting disc correspond to the parts projected on the sliding grooves to form a plurality of second mounting areas, the second mounting areas are respectively provided with a second mounting hole in a penetrating mode, and after the position of the blade is adjusted, at least one first mounting hole and one second mounting hole are arranged in a corresponding mode in the vertical direction;
the cutter head assembly further comprises a locking assembly, and the locking assembly is mounted in the first mounting hole and the second mounting hole and used for fixedly mounting the adjusting disc on the cutter head.
5. The road circular manhole cutter of claim 1, further comprising a first drive device, the first drive device comprising:
the driving motor is arranged on the mounting seat, is vertically arranged, and the main shaft extends downwards;
the motor driving wheel is arranged on a main shaft of the driving motor;
the cutter head driven wheel is fixed on the cutter head and rotates coaxially with the cutter head; and the number of the first and second groups,
the conveying belt is arranged between the cutter driven wheel and the motor driving wheel;
the driving motor drives the motor driving wheel to rotate, so that the cutter head is driven to rotate through the conveyor belt, and the blades can cut in a rotating mode.
6. The circular manhole cover cutting machine according to claim 1, further comprising a guide structure for guiding the mounting base to move up and down, wherein the guide structure comprises a guide groove and a guide protrusion slidably engaged with each other, one of the guide groove and the guide protrusion is formed on the base, and the other is formed on the mounting base.
7. The circular manhole cover cutting machine of claim 1, wherein the cutting device is arranged at the left end of the machine base, with the length direction of the machine base as the left-right direction;
circular well lid hole cutting machine of road still includes second drive arrangement, second drive arrangement includes:
the crank rocker mechanism comprises a rocker frame which is hinged to the base and can swing left and right, the rocker frame is positioned above the mounting seat, and the rocker frame comprises a supporting rod which extends forwards and backwards; and the number of the first and second groups,
the driving connecting rod extends up and down, the upper end of the driving connecting rod is fixedly installed on the supporting rod, and the lower end of the driving connecting rod is hinged to the installation seat.
8. The road circular manhole cover cutting machine according to claim 7, wherein said crank-rocker mechanism further comprises:
the crank is rotatably arranged on the machine base along a front-back axis and is positioned on the right side of the mounting base; and the number of the first and second groups,
and one end of the connecting rod is hinged to the crank, and the other end of the connecting rod is hinged to the supporting rod.
9. The circular manhole cover cutting machine of claim 8, wherein the rear end face of the crank is provided with a limiting post, and the limiting post forms a rotating path when rotating along with the crank;
and a stopping part is formed on the base corresponding to the rotating path and used for limiting the rotating stroke of the crank.
10. The circular manhole cover cutting machine of claim 1, wherein the machine base has a plurality of rollers at a lower end thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921667784.8U CN210975484U (en) | 2019-09-30 | 2019-09-30 | Circular manhole cover hole cutting machine of road |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921667784.8U CN210975484U (en) | 2019-09-30 | 2019-09-30 | Circular manhole cover hole cutting machine of road |
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| Publication Number | Publication Date |
|---|---|
| CN210975484U true CN210975484U (en) | 2020-07-10 |
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|---|---|---|---|
| CN201921667784.8U Active CN210975484U (en) | 2019-09-30 | 2019-09-30 | Circular manhole cover hole cutting machine of road |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565495A (en) * | 2019-09-30 | 2019-12-13 | 武汉轻工大学 | Circular manhole cover hole cutting machine of road |
| CN111851234A (en) * | 2020-08-03 | 2020-10-30 | 林永盛 | Cutting device with leveling function for road restoration |
| CN112207888A (en) * | 2020-09-22 | 2021-01-12 | 王非凡 | Preparation process of composite modified asphalt |
-
2019
- 2019-09-30 CN CN201921667784.8U patent/CN210975484U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565495A (en) * | 2019-09-30 | 2019-12-13 | 武汉轻工大学 | Circular manhole cover hole cutting machine of road |
| CN110565495B (en) * | 2019-09-30 | 2024-04-09 | 武汉轻工大学 | Road circular well lid hole cutting machine |
| CN111851234A (en) * | 2020-08-03 | 2020-10-30 | 林永盛 | Cutting device with leveling function for road restoration |
| CN112207888A (en) * | 2020-09-22 | 2021-01-12 | 王非凡 | Preparation process of composite modified asphalt |
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