CN209923742U - Environment-friendly concrete initial setting ground cutting machine - Google Patents
Environment-friendly concrete initial setting ground cutting machine Download PDFInfo
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- CN209923742U CN209923742U CN201920381589.2U CN201920381589U CN209923742U CN 209923742 U CN209923742 U CN 209923742U CN 201920381589 U CN201920381589 U CN 201920381589U CN 209923742 U CN209923742 U CN 209923742U
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Abstract
The utility model provides an environment-friendly concrete initial setting ground cutting machine, the cutting machine includes cutting machine chassis, cutting structure, power unit, drive mechanism, moving mechanism, controller and dustproof shell, the cutting machine chassis is connected with cutting structure, power unit, moving mechanism, controller and dustproof shell, power unit is the engine, the engine sets up on the cutting machine chassis, moving mechanism includes front wheel assembly, rear wheel assembly, front and back wheel connecting rod and elevation structure, front wheel assembly and rear wheel assembly are connected through front and back wheel connecting rod, elevation structure is connected with front and back wheel connecting rod and controller, moving mechanism is used for the removal of cutting machine and supports the lift of cutting machine chassis, driven mechanism is connected with power unit and cutting mechanism, cutting mechanism includes the cutting saw bit, the cutting saw blade is arranged inside the dustproof shell, and the dustproof shell completely wraps the cutting saw blade.
Description
The technical field is as follows:
the utility model relates to the technical field of mechanical equipment, especially, relate to an environment-friendly concrete initial set ground cutting machine.
Background art:
with the rapid development of economy in China in recent years, infrastructure construction is also performed vigorously, so that the application demand of road cutting machines is increasing, and the road cutting machines are mainly used for cutting roads during road repair to prevent irregular cracks from appearing on the surfaces and inside of the roads due to internal stress of the roads. Influence the life of road, and the road cutting machine among the prior art increases road raise dust volume in a large number when using, easily causes road air pollution, and can't effectively reflect road cutting machine's blade position, lead to road cutting machine depth of cut to differ, seriously influence the operating quality of cutting, can't guarantee the uniformity of work result, and along with the continuous progress of technique, the staff discovers the inside internal stress that causes owing to solidifying inside the release that soft cutting can be better is carried out at the concrete initial setting stage.
Therefore, there is a need in the art for an environment-friendly concrete initial setting ground cutter.
In view of this, the present invention is proposed.
The utility model has the following contents:
an object of the utility model is to provide a road surface cutting machine of environmental protection more to solve the unstable technical problem of current road cutting machine working effect
Specifically, the utility model provides an environment-friendly concrete initial set ground cutting machine, the cutting machine includes cutting machine chassis, cutting structure, power unit, drive mechanism, moving mechanism, controller and dust-proof shell, cutting machine chassis is connected with cutting structure, power unit, moving mechanism, controller and dust-proof shell, power unit is the engine, the engine sets up on cutting machine chassis, moving mechanism includes front wheel assembly, rear wheel assembly, front and back wheel connecting rod and elevation structure, front wheel assembly and rear wheel assembly are connected through front and back wheel connecting rod, elevation structure is connected with front and back wheel connecting rod and controller, moving mechanism is used for the removal of cutting machine and supports the lift of cutting machine chassis, drive mechanism is connected with power unit and cutting mechanism, cutting mechanism includes the cutting saw bit, the cutting saw blade is arranged inside the dustproof shell, and the dustproof shell completely wraps the cutting saw blade.
Adopt above-mentioned structure, the utility model discloses can the produced dust of effective control cutting the distance that splashes, and can get into the heap with the produced dust polymerization of cutting, the staff clearance after the cutting of being convenient for is accomplished effectively reduces because the air pollution that the road cutting arouses, gets rid of the pollutant from the pollution source to reach the effect of environmental protection.
Preferably, the dustproof shell comprises a first fixing plate, a saw blade cover, a second fixing plate and a bottom horizontal plate, the first fixing plate is connected with the cutting machine chassis and the saw blade cover, the second fixing plate is connected with the saw blade cover, and the bottom horizontal plate is connected with the saw blade cover.
Furthermore, the saw blade cover comprises a first supporting rod, a top end cross beam and a second supporting rod, the top ends of the first supporting rod and the second supporting rod are connected with the top end cross beam, and the bottom ends of the first supporting rod and the second supporting rod are connected with a bottom end horizontal plate.
Preferably, the first support rod is provided with a first spring and a first spring seat, the first spring is sleeved on the first support rod, one end of the first spring is connected with the first spring seat, and the other end of the first spring is connected with the top end cross beam.
Furthermore, a second spring and a second spring seat are arranged on the second supporting rod, the second spring is sleeved on the second supporting rod, one end of the second spring is connected with the second spring seat, and the other end of the second spring is connected with the top end cross beam.
Adopt above-mentioned structure, the utility model discloses the unevenness on the adaptable cutting road surface of bottom horizontal plate produces relative movement when cutting road surface unevenness, avoids because the unable condition that causes destruction road surface of removal of bottom horizontal plate rigid connection takes place, further improves the utility model discloses with the suitability on concrete initial set road surface, improve the utility model discloses a working quality.
Preferably, be connected with first extension board on the first fixed plate, first extension board is used for sheltering from the gap between dust cover and ground, further improves dustproof effect.
Further, the first extension plate can adjust the extension length, that is, the first fixing plate and the first extension plate can generate relative displacement.
Preferably, the second fixing plate is connected with a second extending plate, and the second extending plate is used for shielding a gap between the dustproof shell and the ground, so that the dustproof effect is further improved.
Further, the second extending plate can adjust the extending length, that is, the second fixing plate and the second extending plate can generate relative displacement.
Furthermore, the first extension plate and the second extension plate can be made of one or more of ABS resin, high-molecular polyurethane, polybutylene terephthalate and G16 steel grit, and the method can effectively prolong the service life of the first extension plate and the second extension plate.
Preferably, the dustproof shell is provided with a dust suction connecting port which is used for being connected with an industrial dust collector.
Furthermore, the dust suction connecting port is arranged on the second fixing plate.
Adopt above-mentioned structure, the utility model discloses when avoiding the pollutant diffusion that the cutting produced, will cut the pollutant and just in time concentrate the recovery when producing to carry out processing on next step to the pollutant, guarantee the utility model discloses zero pollution when using, with environmental friendly, and protected road environment.
Preferably, a driving shaft is arranged on the engine, and the driving shaft is driven to rotate when the engine works.
Furthermore, slewing mechanism includes action wheel, drive belt and follows the driving wheel, the action wheel is connected with the driving shaft, the drive belt is connected with action wheel and follow driving wheel, during operation, the rotatory action wheel rotation that drives of driving shaft, the rotatory drive belt that drives of action wheel removes, the drive belt removes and drives from the driving wheel rotation.
Furthermore, the cutting mechanism further comprises a driven shaft and a driven fixing piece, the driven shaft is connected with the driven wheel, the driven fixing piece and the cutting saw blade, and the driven fixing piece is fixed on the chassis of the cutting machine.
Preferably, the controller includes manual brake and ligature, the ligature is connected with manual brake and elevation structure, manual brake is used for controlling tightening up or loosening of ligature, tightening up or loosening of ligature drives elevation structure promptly and rises or descends, elevation or descending drive cutting machine chassis of elevation structure rise or fall, the rise or the whereabouts drive cutting structure of cutting machine chassis rise or reduce, accomplish cutting mechanism and wait to cut the contact or the separation on road surface, play the control action promptly.
Preferably, the rear wheel assembly comprises a rear wheel body and a rear wheel shaft, the rear wheel body is arranged on the rear wheel shaft, and the rear wheel shaft is connected with the chassis of the cutting machine.
Further, the rear wheel body is provided with a plurality of.
Preferably, the front wheel assembly comprises a front wheel body and a front wheel shaft, the front wheel body is arranged on the front wheel shaft, and the front wheel shaft is connected with the lifting structure.
Furthermore, two ends of the front wheel connecting rod and the rear wheel connecting rod are respectively connected with the front wheel shaft and the rear wheel shaft.
Preferably, the cutting machine further comprises a front guide wheel, the front guide wheel is connected with the top end of the dustproof shell through a guide wheel connecting rod, and the structure is used for ensuring that the advancing route of the cutting machine is a straight line.
Preferably, the cutting machine further comprises a laser range finder, the laser range finder is arranged at the bottom end of the dustproof shell, and the laser range finder is used for measuring the cutting depth of the cutting machine.
To sum up, the utility model discloses following beneficial effect has:
1. the utility model discloses can the produced dust of effective control cutting the distance that splashes, and can get into the heap with the produced dust polymerization of cutting, the staff clearance after the cutting of being convenient for is accomplished effectively reduces because the air pollution that the road cutting arouses, gets rid of the pollutant from the pollution source to reach the effect of environmental protection.
2. The utility model discloses the unevenness on the adaptable cutting road surface of bottom horizontal plate produces relative movement when cutting road surface unevenness, avoids because the unable condition that causes destruction road surface of removing of bottom horizontal plate rigid connection takes place, further improves the utility model discloses with the suitability on concrete initial set road surface, improve the utility model discloses a working quality.
3. The utility model discloses when avoiding the pollutant diffusion that the cutting produced, will cut the pollutant and just in time concentrate the recovery when producing to the processing on next step of pollutant, guarantee the utility model discloses zero pollution when using, friendly with the environment, and protected road environment.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 these drawings without creative efforts.
FIG. 1 is a first perspective view of an environment-friendly concrete initial set ground cutting machine according to the present invention;
FIG. 2 is a right-side enlarged view of the environment-friendly concrete initial setting ground cutting machine of the present invention;
FIG. 3 is a cross-sectional view of the dustproof case of the present invention along the central axis thereof;
FIG. 4 is a left side enlarged view of the environment-friendly concrete initial setting ground cutting machine of the present invention;
FIG. 5 is a second perspective view of the environment-friendly concrete initial set ground cutting machine of the present invention;
FIG. 6 is a bottom view of the environment-friendly concrete initial setting ground cutting machine of the present invention;
FIG. 7 is an enlarged view of the environment-friendly ground cutting machine for initial setting of concrete according to the present invention;
fig. 8 is a perspective view of the controller of the present invention.
Description of reference numerals:
through the above reference sign explanation, combine the embodiment of the utility model, can more clearly understand and explain the technical scheme of the utility model.
1. A cutter chassis; 21. cutting the saw blade; 3. a power mechanism; 4. a transmission mechanism; 5. a moving mechanism; 51. a front wheel assembly; 511. a front wheel body; 512. a front wheel axle; 52. a rear wheel assembly; 521. a rear wheel body; 522. a rear wheel axle; 53. a front and rear wheel connecting rod; 54. a lifting structure; 6. a controller; 61. a hand brake; 62. binding; 7. a dust-proof shell; 71. a first fixing plate; 711. a first extension plate; 721. a first support bar; 7211. a first spring; 7212. a first spring seat; 722. a top end beam; 723. a second support bar; 7231. a second spring; 7232. a second spring seat; 73. a second fixing plate; 731. a second extension plate; 732. a dust collection connector; 74. a bottom horizontal plate; 81. a front guide wheel; 82. guide wheel connecting rod.
The specific implementation mode is as follows:
reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
The present invention will be described in detail below by way of examples.
As shown in fig. 1 and 2, the utility model provides an environment-friendly concrete initial setting ground cutting machine, the cutting machine includes a cutting machine chassis 1, a cutting structure, a power mechanism 3, a transmission mechanism 4, a moving mechanism 5, a controller 6 and a dustproof shell 7, the cutting machine chassis 1 is connected with the cutting structure, the power mechanism 3, the moving mechanism 5, the controller 6 and the dustproof shell 7, the power mechanism 3 is an engine, the engine is arranged on the cutting machine chassis 1, the moving mechanism 5 includes a front wheel assembly 51, a rear wheel assembly 52, a front wheel connecting rod 53 and a lifting structure 54, the front wheel assembly 51 and the rear wheel assembly 52 are connected through the front wheel connecting rod 53 and the rear wheel connecting rod 53 and the controller 6, the moving mechanism 5 is used for moving the cutting machine and supporting the lifting of the cutting machine chassis 1, the transmission mechanism 4 is connected with the power mechanism 3 and the cutting mechanism, the cutting mechanism comprises a cutting saw blade 21, the cutting saw blade 21 is arranged inside the dustproof shell 7, and the dustproof shell 7 completely wraps the cutting saw blade 21.
The cutting machine further comprises a front guide wheel 81, the front guide wheel 81 is connected with the top end of the dustproof shell 7 through a guide wheel connecting rod 82, the structure is used for ensuring that the advancing route of the cutting machine is a straight line, the cutting machine further comprises a laser range finder, the laser range finder is arranged at the bottom end of the dustproof shell 7, and the laser range finder is used for measuring the cutting depth of the cutting machine.
Adopt above-mentioned structure, the utility model discloses can the produced dust of effective control cutting the distance that splashes, and can get into the heap with the produced dust polymerization of cutting, the staff clearance after the cutting of being convenient for is accomplished effectively reduces because the air pollution that the road cutting arouses, gets rid of the pollutant from the pollution source to reach the effect of environmental protection.
As shown in fig. 3, 4 and 5, the dust-proof housing 7 includes a first fixing plate 71, a blade cover, a second fixing plate 73 and a bottom horizontal plate 74, the first fixing plate 71 is connected to the cutter chassis 1 and the blade cover, the second fixing plate 73 is connected to the blade cover, the bottom horizontal plate 74 is connected to the blade cover, the blade cover includes a first supporting rod 721, a top beam 722 and a second supporting rod 723, top ends of the first supporting rod 721 and the second supporting rod 723 are connected to the top beam 722, and bottom ends of the first supporting rod 721 and the second supporting rod 723 are connected to the bottom horizontal plate 74.
The first support rod 721 is provided with a first spring 7211 and a first spring 7211 seat, the first spring 7211 is sleeved on the first support rod 721, one end of the first spring 7211 is connected with the first spring 7211 seat, the other end of the first spring 7211 is connected with the top end beam 722, the second support rod 723 is provided with a second spring 7231 and a second spring 7231 seat, the second spring 7231 is sleeved on the second support rod 723, one end of the second spring 7231 is connected with the second spring 7231 seat, and the other end of the second spring 7231 is connected with the top end beam 722. With the structure, the utility model discloses bottom horizontal plate 74 is adaptable when the cutting road surface unevenness produces relative movement with the unevenness on cutting road surface, avoids causing the condition emergence of destruction road surface because bottom horizontal plate 74 rigid connection can't remove, improves in a preferred embodiment of the invention the utility model discloses with the suitability on concrete initial set road surface, improve the utility model discloses a working quality.
In a preferred embodiment of the present invention, the first fixing plate 71 is connected to a first extending plate 711, and the first extending plate 711 is used for shielding a gap between the dust-proof housing 7 and the ground, so as to improve the dust-proof effect, and the extending length of the first extending plate 711 can be adjusted, that is, the first fixing plate 71 and the first extending plate 711 can be relatively displaced. The second fixing plate 73 is connected with a second extending plate 731, the second extending plate 731 is used for shielding a gap between the dust-proof housing 7 and the ground, in a preferred embodiment of the invention, the dust-proof effect is improved, the extending length of the second extending plate 731 can be adjusted, that is, the second fixing plate 73 and the second extending plate 731 can generate relative displacement, the first extending plate 711 and the second extending plate 731 can be made of high molecular weight polyurethane and polybutylene terephthalate as raw materials, the method can effectively prolong the service life of the first extending plate 711 and the second extending plate 731, the dust-proof housing 7 is provided with a dust-absorbing connecting port 732, the dust-absorbing connecting port 732 is used for connecting with an industrial dust collector, and the dust-absorbing connecting port 732 is arranged on the second fixing plate 73.
Adopt above-mentioned structure, the utility model discloses when avoiding the pollutant diffusion that the cutting produced, will cut the pollutant and just in time concentrate the recovery when producing to carry out processing on next step to the pollutant, guarantee the utility model discloses zero pollution when using, with environmental friendly, and protected road environment.
As shown in fig. 6, 7 and 8, the rear wheel assembly 52 includes a rear wheel body 521 and a rear wheel axle 522, the rear wheel body 521 is disposed on the rear wheel axle 522, the rear wheel axle 522 is connected to the cutting machine chassis 1, two rear wheel bodies 521 are disposed, the front wheel assembly 51 includes a front wheel body 511 and a front wheel axle 512, the front wheel body 511 is disposed on the front wheel axle 512, the front wheel axle 512 is connected to the lifting structure 54, and two ends of the front and rear wheel connecting rod 53 are respectively connected to the front wheel axle 512 and the rear wheel axle 522.
The controller 6 includes manual brake 61 and ligature 62, ligature 62 is connected with manual brake 61 and elevation structure 54, manual brake 61 is used for controlling tightening up or loosening of ligature 62, tightening up or loosening of ligature 62 drives elevation structure 54 promptly to rise or descend, elevation or descending of elevation structure 54 drive cutting machine chassis 1 and rise or fall, the rise or fall of cutting machine chassis 1 drives cutting structure and rises or reduces, accomplishes the contact or the separation of cutting mechanism and the road surface of waiting to cut, plays control action promptly.
The engine is provided with a driving shaft, and the driving shaft is driven to rotate when the engine works. The cutting mechanism comprises a driving wheel, a driving belt and a driven wheel, wherein the driving wheel is connected with the driving shaft, the driving belt is connected with the driving wheel and the driven wheel, the driving shaft rotates to drive the driving wheel to rotate during operation, the driving wheel rotates to drive the driving belt to move, the driving belt moves to drive the driven wheel to rotate, the cutting mechanism further comprises a driven shaft and a driven fixing piece, the driven shaft is connected with the driven wheel, the driven fixing piece and the cutting saw blade 21, and the driven fixing piece is fixed on the cutting machine chassis 1.
To sum up, the utility model discloses following beneficial effect has: the utility model can effectively control the splashing distance of the dust generated by cutting, and can aggregate the dust generated by cutting into piles, thereby being convenient for workers to clean after the cutting is completed, effectively reducing the air pollution caused by road cutting, and removing pollutants from the pollution source to achieve the effect of protecting the environment; the utility model discloses bottom horizontal plate 74 is adaptable to the unevenness production relative movement of cutting road surface when cutting the road surface unevenness, avoids causing the condition emergence of destroying the road surface because bottom horizontal plate 74 rigid connection can't move, improves the utility model discloses and the suitability of concrete initial set road surface in a preferred embodiment of the invention, improves the utility model's operating mass; the utility model discloses when avoiding the pollutant diffusion that the cutting produced, will cut the pollutant and just in time concentrate the recovery when producing to the processing on next step of pollutant, guarantee the utility model discloses zero pollution when using, friendly with the environment, and protected road environment.
It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall into the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides an environment-friendly concrete initial set ground cutting machine which characterized in that: the cutting machine comprises a cutting machine chassis (1), a cutting structure, a power mechanism (3), a transmission mechanism (4), a moving mechanism (5), a controller (6) and a dustproof shell (7), wherein the cutting machine chassis (1) is connected with the cutting structure, the power mechanism (3), the moving mechanism (5), the controller (6) and the dustproof shell (7), the power mechanism (3) is an engine, the engine is arranged on the cutting machine chassis (1), the moving mechanism (5) comprises a front wheel assembly (51), a rear wheel assembly (52), a front wheel connecting rod (53) and a rear wheel connecting rod (54), the front wheel assembly (51) and the rear wheel assembly (52) are connected through the front wheel connecting rod (53) and the rear wheel connecting rod (53), the lifting structure (54) is connected with the front wheel connecting rod (53) and the rear wheel connecting rod (53) and the controller (6), and the moving mechanism (5) is used for moving the cutting machine and supporting the lifting of the cutting machine chassis (1), the transmission mechanism (4) is connected with the power mechanism (3) and the cutting mechanism, the cutting mechanism comprises a cutting saw blade (21), the cutting saw blade (21) is arranged inside the dustproof shell (7), and the dustproof shell (7) completely wraps the cutting saw blade (21).
2. The environment-friendly concrete initial setting ground cutting machine according to claim 1, wherein: dustproof case (7) include first fixed plate (71), saw bit cover, second fixed plate (73) and bottom horizontal plate (74), first fixed plate (71) are connected with cutting machine chassis (1) and saw bit cover, second fixed plate (73) are connected with the saw bit cover, bottom horizontal plate (74) are connected with the saw bit cover.
3. The environment-friendly concrete initial setting ground cutting machine according to claim 2, wherein: the saw blade cover comprises a first supporting rod (721), a top end cross beam (722) and a second supporting rod (723), the top ends of the first supporting rod (721) and the second supporting rod (723) are connected with the top end cross beam (722), and the bottom ends of the first supporting rod (721) and the second supporting rod (723) are connected with a bottom end horizontal plate (74).
4. The environment-friendly concrete initial setting ground cutting machine according to claim 3, wherein: be provided with first spring (7211) and first spring holder (7212) on first bracing piece (721), first spring (7211) cup joint on first bracing piece (721), just first spring (7211) one end is connected with first spring holder (7212), the other end of first spring (7211) is connected with top end crossbeam (722).
5. The environment-friendly concrete initial setting ground cutting machine according to claim 3, wherein: be provided with second spring (7231) and second spring holder (7232) on second bracing piece (723), second spring (7231) cup joints on second bracing piece (723), just second spring (7231) one end is connected with second spring holder (7232), the other end of second spring (7231) is connected with top end crossbeam (722).
6. The environment-friendly concrete initial setting ground cutting machine according to claim 2, wherein: a first extension plate (711) is connected to the first fixing plate (71), the extension length of the first extension plate (711) can be adjusted, a second extension plate (731) is connected to the second fixing plate (73), and the extension length of the second extension plate (731) can be adjusted.
7. The environment-friendly concrete initial setting ground cutting machine according to claim 2, wherein: the dustproof shell (7) is provided with a dust suction connecting port (732), and the dust suction connecting port (732) is used for being connected with an industrial dust collector.
8. The environment-friendly concrete initial setting ground cutting machine according to claim 7, wherein: the dust suction connection port (732) is provided on the second fixing plate (73).
9. The environment-friendly concrete initial setting ground cutting machine according to claim 1, wherein: the controller (6) comprises a hand brake (61) and a binding wire (62), wherein the binding wire (62) is connected with the hand brake (61) and the lifting structure (54).
10. The environment-friendly concrete initial setting ground cutting machine according to claim 1, wherein: the cutting machine further comprises a laser range finder, the laser range finder is arranged at the bottom end of the dustproof shell (7), and the laser range finder is used for measuring the cutting depth of the cutting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920381589.2U CN209923742U (en) | 2019-03-25 | 2019-03-25 | Environment-friendly concrete initial setting ground cutting machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920381589.2U CN209923742U (en) | 2019-03-25 | 2019-03-25 | Environment-friendly concrete initial setting ground cutting machine |
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| CN209923742U true CN209923742U (en) | 2020-01-10 |
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| CN201920381589.2U Active CN209923742U (en) | 2019-03-25 | 2019-03-25 | Environment-friendly concrete initial setting ground cutting machine |
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| CN (1) | CN209923742U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112144362A (en) * | 2019-06-26 | 2020-12-29 | 南京德朔实业有限公司 | Concrete cutting machine |
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2019
- 2019-03-25 CN CN201920381589.2U patent/CN209923742U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112144362A (en) * | 2019-06-26 | 2020-12-29 | 南京德朔实业有限公司 | Concrete cutting machine |
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