CN112853906A - Road repair uses road surface cutting device - Google Patents
Road repair uses road surface cutting device Download PDFInfo
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- CN112853906A CN112853906A CN202110158472.XA CN202110158472A CN112853906A CN 112853906 A CN112853906 A CN 112853906A CN 202110158472 A CN202110158472 A CN 202110158472A CN 112853906 A CN112853906 A CN 112853906A
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- Prior art keywords
- frame
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- cutting
- sliding
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- 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
- E01C23/09—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
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- 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
- E01C23/09—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/0906—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges
- E01C23/0926—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters
- E01C23/0933—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters rotary, e.g. circular-saw joint cutters
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Repair (AREA)
Abstract
The invention discloses a road surface cutting device for road repair, which relates to the technical field of road repair and comprises a moving frame, wherein two pairs of walking wheels are rotatably arranged at the bottom of the moving frame, a transverse rack is transversely fixed on the moving frame, a sliding frame is slidably sleeved on the transverse rack, a lifting frame is arranged at the bottom of the sliding frame through a telescopic mechanism, and a walking driving mechanism for driving the walking wheels to rotate is connected onto a double-shaft motor which is fixedly connected with a cutting mechanism in a transmission manner; according to the invention, the cutting action on the road surface to be repaired is realized through the rotation of the cutting blade in the arranged cutting mechanism, the sliding frame is driven to transversely move through the arranged translation mechanism, the effect of adjusting the transverse position of the cutting mechanism by driving the cutting mechanism through the lifting frame is realized, the adjustment flexibility of the road surface cutting is effectively improved, the cutting efficiency is improved, the arranged walking driving mechanism can drive the walking wheels to rotate, the linear movement of the whole device is realized, and the full cutting effect on the repaired road surface is realized.
Description
Technical Field
The invention relates to the technical field of road repair, in particular to a road surface cutting device for road repair.
Background
Road engineering refers to the whole process of planning, designing, constructing, maintaining and managing work performed by taking a road as an object and the engineering entity engaged in the whole process. Road works, like civil engineering of any other gate type, have obvious technical, economic and regulatory aspects.
At the road repair in-process, need repair damaged road surface, when mending, cut damaged road surface with the help of cutting device, make things convenient for subsequent construction to repair, but current road surface cutting device's regulation effect is relatively poor, can not carry out the efficient cutting action according to the construction needs, for this reason, now provide a road repair and use road surface cutting device in order to solve above-mentioned technical problem.
Disclosure of Invention
The present invention is directed to a road cutting device for road repair to solve the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a road repair is with road surface cutting device, removes the frame bottom and rotates and install two pairs of walking wheels including removing the frame, remove the horizontal fixation of frame and have horizontal rack, sliding sleeve is equipped with the carriage on the horizontal rack, be equipped with the translation mechanism who is used for driving its lateral shifting on the carriage, the crane is installed through telescopic machanism to the carriage bottom, the crane bottom is fixed with the gallows, is equipped with the cutting mechanism who is used for carrying out the cutting to the road surface on the gallows, be fixed with on the gallows be connected with the double-shaft motor who is connected with the cutting mechanism transmission and be used for the rotatory.
As a modified scheme of the invention: translation mechanism is fixed with translation motor including fixing the link on the carriage on the link, and the last drive of translation motor is connected with worm II, and the meshing is connected with worm wheel II on the worm II, and the coaxial walking gear that is fixed with on the worm wheel II, walking gear and horizontal rack toothing are connected.
As a modified scheme of the invention: the telescopic mechanism comprises an articulated frame, the articulated frame is formed by alternately articulating a plurality of rod-shaped objects, the upper left end of the articulated frame is articulated at the bottom of the sliding frame, the upper right end of the articulated frame is connected with the sliding frame through an adjusting mechanism, the lower left end and the lower right end of the articulated frame are respectively articulated with a sliding sleeve, and a transverse rod fixed with the hanging frame is arranged on the sliding sleeve in a penetrating way.
As a modified scheme of the invention: the adjusting mechanism comprises an adjusting motor fixed on the sliding frame, a threaded rod is connected to the adjusting motor in a driving mode, an adjusting frame slidably mounted on the sliding frame is sleeved on the threaded rod in a threaded mode, and the adjusting frame is hinged to the upper right end of the hinged frame.
As a modified scheme of the invention: the cutting mechanism comprises a double-shaft motor fixed on the hanger, and a cutting blade is coaxially fixed on one output shaft of the double-shaft motor.
As a modified scheme of the invention: the novel dust collector is characterized in that a driving gear is coaxially fixed on the cutting blade, a driven gear is meshed and connected onto the driving gear, a bevel gear III is coaxially fixed on the driven gear, a bevel gear IV is meshed and connected onto the bevel gear III, an axial flow fan blade is coaxially fixed at the bottom of the bevel gear IV, a dust collector is fixed at the top of the sliding frame, and a dust guide pipe directly above the axial flow fan blade is installed at the inlet end of the dust collector.
As a modified scheme of the invention: the walking driving mechanism comprises a bevel gear I coaxially fixed with the walking wheel, a bevel gear II is connected to the bevel gear I in a meshed mode, the other output shaft of the double-shaft motor is connected with a worm I in a driving mode, and a worm wheel I is connected to the worm I in a meshed mode.
As a modified scheme of the invention: the walking driving mechanism further comprises a guide wheel in transmission connection with the worm wheel I, the guide wheel and the bevel gear II through a belt wheel mechanism, a sliding rod is installed on the moving frame in a sliding mode, the guide wheel is installed on the sliding rod in a rotating mode, a limiting plate is fixed on the sliding rod, and a spring ring is fixed between the limiting plate and the moving frame.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the cutting action on the road surface to be repaired is realized through the rotation of the cutting blade in the arranged cutting mechanism, the sliding frame is driven to transversely move through the arranged translation mechanism, the effect of adjusting the transverse position of the cutting mechanism by driving the cutting mechanism through the lifting frame is realized, the adjustment flexibility of the road surface cutting is effectively improved, the cutting efficiency is improved, the arranged walking driving mechanism can drive the walking wheels to rotate, the linear movement of the whole device is realized, and the full cutting effect on the repaired road surface is realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
FIG. 4 is a schematic partial top view of FIG. 1;
fig. 5 is a partial perspective view of the present invention.
In the figure: 1-moving rack, 2-hinged rack, 3-transverse rack, 4-travelling wheel, 5-double shaft motor, 6-worm I, 7-bevel gear I, 8-bevel gear II, 9-limit plate, 10-belt wheel mechanism, 11-sliding rod, 12-spring ring, 13-sliding rack, 14-worm wheel I, 15-lifting rack, 16-transverse rod, 17-driven gear, 18-cutting blade, 19-driving gear, 20-bevel gear III, 21-bevel gear IV, 22-axial flow, 23-lifting rack, 24-dust guide pipe, 25-connecting rack, 26-translation motor, 27-worm II, 28-worm wheel II, 29-travelling gear, 30-adjusting rack, 31-adjusting motor, 32-threaded rod, 33-sliding sleeve, 34-dust collector and 35-guide wheel.
Detailed Description
The technical scheme of the patent is further described in detail by combining the following specific embodiments:
example 1
Referring to fig. 1-5, a road surface cutting device for road repair comprises a movable frame 1, two pairs of walking wheels 4 are rotatably mounted at the bottom of the movable frame 1, a transverse rack 3 is transversely fixed on the movable frame 1, a sliding frame 13 is slidably sleeved on the transverse rack 3, a translation mechanism for driving the transverse movement of the sliding frame 13 is arranged on the sliding frame 13, a lifting frame 15 is mounted at the bottom of the sliding frame 13 through a telescopic mechanism, a lifting frame 23 is fixed at the bottom of the lifting frame 15, a cutting mechanism for cutting a road surface is arranged on the lifting frame 23, and a walking driving mechanism for driving the walking wheels 4 to rotate is connected on a double-shaft motor 5 which is in transmission connection with the cutting mechanism and is fixed on the lifting frame 23.
The translation mechanism of the device comprises a connecting frame 25 fixed on a sliding frame 13, a translation motor 26 is fixed on the connecting frame 25, a worm II27 is connected to the translation motor 26 in a driving mode, a worm gear II28 is connected to the worm II27 in a meshing mode, a walking gear 29 is coaxially fixed on the worm gear II28, and the walking gear 29 is connected with a transverse rack 3 in a meshing mode.
It is rotatory to drive worm II27 through the translation motor 26 that sets up, worm II27 drive worm wheel II28 rotates, worm wheel II28 drive walking gear 29 is rotatory this moment, walking gear 29 is connected with the meshing of horizontal rack 3, and then realize that link 25 drives the relative horizontal rack 3 of carriage 13 and carries out lateral shifting and adjust, realize that cutting mechanism carries out initial position's regulation, conveniently carry out nimble cutting to the road surface.
The telescopic machanism of this device includes articulated frame 2, and articulated frame 2 is formed by the articulated cross-articulation of a plurality of shaft-like thing, and articulated frame 2 upper left end articulates in carriage 13 bottom, and articulated frame 2 upper right end is passed through adjustment mechanism and is connected with carriage 13, articulated frame 2 lower left end and right lower extreme articulate respectively has sliding sleeve 33, wear to be equipped with on the sliding sleeve 33 with the fixed transverse bar 16 of gallows 23.
The adjusting mechanism of the device comprises an adjusting motor 31 fixed on the sliding frame 13, a threaded rod 32 is connected to the adjusting motor 31 in a driving mode, an adjusting frame 30 slidably mounted on the sliding frame 13 is sleeved on the threaded rod 32 in a threaded mode, and the adjusting frame 30 is hinged to the upper right end of the hinged frame 2.
Through adjusting motor 31 drive threaded rod 32 rotatory, threaded rod 32 drive alignment jig 30 lateral shifting, alignment jig 30 slides relative carriage 13, and carriage 13 drives articulated frame 2 this moment and carries out the flexible of vertical direction, realizes that crane 15 drives gallows 23 and goes up and down, realizes that cutting mechanism can adjust the depth of cut on road surface.
Example 2
On the basis of embodiment 1, in addition, the cutting mechanism of the device comprises a double-shaft motor 5 fixed on a hanger 23, a cutting blade 18 is coaxially fixed on one output shaft of the double-shaft motor 5, a driving gear 19 is coaxially fixed on the cutting blade 18, a driven gear 17 is meshed and connected with the driving gear 19, a bevel gear III20 is coaxially fixed on the driven gear 17, a bevel gear IV21 is meshed and connected with the bevel gear III20, an axial flow fan blade 22 is coaxially fixed at the bottom of the bevel gear IV21, a dust collector 34 is fixed at the top of the sliding frame 13, and a dust guide pipe 24 positioned right above the axial flow fan blade 22 is installed at the inlet end of the dust collector 34.
The double-shaft motor 5 is arranged to drive the cutting blade 18 to rotate so as to cut the road surface, the driving gear 19 is driven to rotate in the rotating process of the cutting blade 18, the driving gear 19 drives the driven gear 17 meshed with the driving gear to rotate, the driven gear 17 drives the bevel gear III20 to rotate, the bevel gear III20 drives the bevel gear IV21 to rotate, at the moment, the axial flow fan 22 rotates and lifts dust generated in the cutting process, and the dust enters the dust collector 34 along the dust guide pipe 24 to be collected.
The walking driving mechanism of the device comprises a bevel gear I7 coaxially fixed with the walking wheel 4, a bevel gear II8 is connected to the bevel gear I7 in a meshed mode, the other output shaft of the double-shaft motor 5 is connected with a worm I6 in a driving mode, and a worm wheel I14 is connected to the worm I6 in a meshed mode. The walking driving mechanism further comprises a guide wheel 35 in transmission connection with a worm wheel I14, the guide wheel 35 and a bevel gear II8 through a belt pulley mechanism 10, a sliding rod 11 is installed on the moving frame 1 in a sliding mode, the guide wheel 35 is installed on the sliding rod 11 in a rotating mode, a limiting plate 9 is fixed on the sliding rod 11, and a spring ring 12 is fixed between the limiting plate 9 and the moving frame 1.
The double-shaft motor 5 that sets up drives worm I6 rotatory, and worm I6 drive worm wheel I14 with it meshing is rotatory, and worm wheel I14 passes through belt pulley mechanism 10 drive bevel gear II8 rotatory, and bevel gear II8 drives the rotatory rotation that realizes walking wheel 4 of bevel gear I7, realizes driving this device and removes, realizes the abundant cutting to the road surface.
And in the process that cutting mechanism carries out vertical lift adjustment and horizontal position control, the slide bar 11 that sets up slides relative to moving frame 1, and spring coil 12 elastic deformation realizes that leading wheel 35 tightens up belt pulley mechanism 10, guarantees through belt pulley mechanism 10 to walking 4's stable transmission, promotes the smoothness of road surface cutting.
In conclusion, the cutting action on the road surface to be repaired is realized by rotating the cutting blade 18 in the arranged cutting mechanism, the sliding frame 13 is driven to transversely move by the arranged translation mechanism, the lifting frame 23 drives the cutting mechanism to perform the function of adjusting the transverse position, the adjustment flexibility of the road surface cutting is effectively improved, the cutting efficiency is improved, the arranged walking driving mechanism can drive the walking wheels 4 to rotate, the whole device is driven to linearly move, and the full cutting function on the repaired road surface is realized.
It should be noted that, although the present specification describes embodiments, each embodiment does not include only a single technical solution, and such description of the specification is only for clarity, and those skilled in the art should take the specification as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art, and the above-mentioned embodiments only express the preferred embodiments of the technical solutions, and the description thereof is more specific and detailed, but should not be construed as limiting the scope of the claims of the technical solutions. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these changes and substitutions belong to the protection scope of the present invention. The protection scope of this technical solution patent should be subject to the appended claims.
Claims (8)
1. The utility model provides a road repair is with road surface cutting device, is including removing frame (1), removes frame (1) bottom and rotates and install two pairs of walking wheels (4), its characterized in that, remove frame (1) transversely to be fixed with horizontal rack (3), sliding sleeve is equipped with carriage (13) on horizontal rack (3), be equipped with the translation mechanism that is used for driving its transverse movement on carriage (13), crane (15) are installed through telescopic machanism in carriage (13) bottom, crane (15) bottom is fixed with gallows (23), is equipped with on gallows (23) to be used for carrying out the cutting mechanism that cuts the road surface, be connected with on gallows (23) and be used for the rotatory travel drive mechanism of road wheel (4) with double-axis motor (5) that the cutting mechanism transmission is connected.
2. The road pavement cutting device for road repair according to claim 1, wherein the translation mechanism comprises a connecting frame (25) fixed on the sliding frame (13), a translation motor (26) is fixed on the connecting frame (25), a worm II (27) is connected on the translation motor (26) in a driving manner, a worm wheel II (28) is connected on the worm II (27) in a meshing manner, a walking gear (29) is coaxially fixed on the worm wheel II (28), and the walking gear (29) is connected with the transverse rack (3) in a meshing manner.
3. The road pavement cutting device for road repair according to claim 1, wherein the telescopic mechanism comprises a hinged frame (2), the hinged frame (2) is formed by hinging a plurality of rods in a crossed manner, the left upper end of the hinged frame (2) is hinged to the bottom of the sliding frame (13), the right upper end of the hinged frame (2) is connected with the sliding frame (13) through an adjusting mechanism, the left lower end and the right lower end of the hinged frame (2) are respectively hinged with a sliding sleeve (33), and a transverse rod (16) fixed with the hanging frame (23) penetrates through the sliding sleeve (33).
4. The road pavement cutting device for road repair according to claim 3, wherein the adjusting mechanism comprises an adjusting motor (31) fixed on the sliding frame (13), a threaded rod (32) is connected to the adjusting motor (31) in a driving manner, an adjusting frame (30) slidably mounted on the sliding frame (13) is sleeved on the threaded rod (32) in a threaded manner, and the adjusting frame (30) is hinged with the upper right end of the hinging frame (2).
5. The road surface cutting device for road patching according to claim 1, wherein the cutting mechanism comprises a double-shaft motor (5) fixed on the hanger (23), and a cutting blade (18) is coaxially fixed on one output shaft of the double-shaft motor (5).
6. The road pavement cutting device for road repair according to claim 5, wherein the cutting blade (18) is coaxially fixed with a driving gear (19), the driving gear (19) is engaged and connected with a driven gear (17), the driven gear (17) is coaxially fixed with a bevel gear III (20), the bevel gear III (20) is engaged and connected with a bevel gear IV (21), the bottom of the bevel gear IV (21) is coaxially fixed with an axial flow fan blade (22), the top of the sliding frame (13) is fixed with a dust collector (34), and a dust guide pipe (24) directly above the axial flow fan blade (22) is installed at the inlet end of the dust collector (34).
7. The road pavement cutting device for road repair according to claim 5, wherein the travel driving mechanism comprises a bevel gear I (7) coaxially fixed with the travel wheels (4), a bevel gear II (8) is engaged and connected to the bevel gear I (7), the other output shaft of the double-shaft motor (5) is drivingly connected with a worm I (6), and a worm gear I (14) is engaged and connected to the worm I (6).
8. The road surface cutting device for road patching according to claim 7, wherein the walking driving mechanism further comprises a guide wheel (35) in transmission connection with a worm wheel I (14), a guide wheel (35) and a bevel gear II (8) through a belt wheel mechanism (10), a sliding rod (11) is installed on the movable frame (1) in a sliding mode, the guide wheel (35) is installed on the sliding rod (11) in a rotating mode, a limiting plate (9) is fixed on the sliding rod (11), and a spring ring (12) is fixed between the limiting plate (9) and the movable frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110158472.XA CN112853906A (en) | 2021-02-05 | 2021-02-05 | Road repair uses road surface cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110158472.XA CN112853906A (en) | 2021-02-05 | 2021-02-05 | Road repair uses road surface cutting device |
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| Publication Number | Publication Date |
|---|---|
| CN112853906A true CN112853906A (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110158472.XA Pending CN112853906A (en) | 2021-02-05 | 2021-02-05 | Road repair uses road surface cutting device |
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| CN (1) | CN112853906A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356295A (en) * | 2021-06-03 | 2021-09-07 | 重庆大学 | Continuous sawing equipment for underground deep and narrow grooves |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737293A (en) * | 2018-12-30 | 2019-05-10 | 广州天聪自动化设备有限公司 | A kind of friendship scissors automatic lifting hanger |
| CN110306408A (en) * | 2019-08-07 | 2019-10-08 | 吴迪 | A kind of road construction cement pavement Embosser |
| CN110424234A (en) * | 2019-08-07 | 2019-11-08 | 吴迪 | A kind of road construction expansion joint cutter device |
| CN111001872A (en) * | 2019-12-20 | 2020-04-14 | 武文家 | Machining aluminum plate cutting device |
| CN212404752U (en) * | 2020-04-11 | 2021-01-26 | 江苏科弘岩土工程有限公司 | Cement road surface is repaired with groover that has dust fall function |
-
2021
- 2021-02-05 CN CN202110158472.XA patent/CN112853906A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737293A (en) * | 2018-12-30 | 2019-05-10 | 广州天聪自动化设备有限公司 | A kind of friendship scissors automatic lifting hanger |
| CN110306408A (en) * | 2019-08-07 | 2019-10-08 | 吴迪 | A kind of road construction cement pavement Embosser |
| CN110424234A (en) * | 2019-08-07 | 2019-11-08 | 吴迪 | A kind of road construction expansion joint cutter device |
| CN111001872A (en) * | 2019-12-20 | 2020-04-14 | 武文家 | Machining aluminum plate cutting device |
| CN212404752U (en) * | 2020-04-11 | 2021-01-26 | 江苏科弘岩土工程有限公司 | Cement road surface is repaired with groover that has dust fall function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356295A (en) * | 2021-06-03 | 2021-09-07 | 重庆大学 | Continuous sawing equipment for underground deep and narrow grooves |
| CN113356295B (en) * | 2021-06-03 | 2023-02-14 | 重庆大学 | Continuous sawing equipment for underground deep narrow groove |
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| CB02 | Change of applicant information |
Address after: 030021 Building 2, zefengyuan, Xiyi lane, Pingyang Road, Xiaodian District, Taiyuan City, Shanxi Province Applicant after: Wang Xiaofeng Address before: 030021 West 1ST lane, Huayang Road, Taiyuan City, Shanxi Province Applicant before: Wang Xiaofeng |
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Application publication date: 20210528 |
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