CN116196715A - Dustproof equipment for road construction - Google Patents
Dustproof equipment for road construction Download PDFInfo
- Publication number
- CN116196715A CN116196715A CN202310414833.1A CN202310414833A CN116196715A CN 116196715 A CN116196715 A CN 116196715A CN 202310414833 A CN202310414833 A CN 202310414833A CN 116196715 A CN116196715 A CN 116196715A
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- Prior art keywords
- water outlet
- water
- water tank
- fixedly connected
- driving
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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
- E01C23/12—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 taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor
- E01C23/122—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 taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus
- E01C23/127—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 taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus rotary, e.g. rotary hammers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/16—Apparatus having rotary means, other than rotatable nozzles, for atomising the cleaning liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
- B05B15/68—Arrangements for adjusting the position of spray heads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Nozzles (AREA)
- Road Repair (AREA)
Abstract
The invention relates to the technical field of road construction, in particular to dust-proof equipment for road construction, which comprises a bracket and a dust-proof mechanism for vertically acting on the ground; the dustproof mechanism comprises a crushing piece and a power assembly for driving the crushing piece to reciprocate; the power assembly comprises a screw, a nut seat, a guide rod and a power piece for driving the screw to rotate; the power piece is arranged at the top end of the bracket; the nut seat is in threaded connection with the screw rod; the guide rod is fixedly connected with the bracket, and the nut seat is in sliding connection with the guide rod; the crushing piece is arranged on the nut seat; the nut seat is characterized by further comprising a dustproof component which is used for dust falling along with the movement of the nut seat. The problem that water sprayed from the mist spray head can directly act on the pavement generated by dust and cannot influence pavement crushing work of constructors is solved.
Description
Technical Field
The invention relates to the technical field of road construction, in particular to dust-proof equipment for road construction.
Background
In the road construction process, because of the problem that dust is diffused everywhere caused by engineering, pedestrians can feel great discomfort when walking on a road, and the dust can also influence the working environment and physical and mental health of constructors; at present, a worker can adopt a baffle during construction, a water mist spray head capable of atomizing water to reduce dust content in air is arranged on the baffle, but the baffle cannot rotate in the use process, so that the flexibility of the spray head is poor, water mist sprayed out of the spray head can act on pedestrians or workers to cause trouble of the pedestrians or workers.
In order to solve the problems, chinese patent publication No. CN218597899U discloses a dust keeper for municipal road construction, which comprises a base, wherein a protection plate is fixedly arranged at the top of the base, a protection cover is fixedly arranged on the side surface of the protection plate, an inner cavity is formed in the middle of the protection cover, a motor is fixedly arranged on the inner wall of the inner cavity, an output shaft of the motor is fixedly connected with a rotating rod, a first gear is fixedly connected on the rotating rod, a blind hole is formed in the bottom of the base, and a bearing is fixedly connected on the inner wall of the blind hole; in the use of the device, the position of the mist spray head can be adjusted through the cooperation of the set bearing, the mist spray head, the first gear and the second gear, so that the influence can not be driven by passers-by or constructors when the mist spray head sprays water.
The device has the following problems in the actual use process: when constructors crush the pavement, particularly the pavement paved with the sintered pavement bricks, a large amount of dust is generated on the pavement, and the dust is scattered everywhere, so that the dust can cause harm to the health of workers who are performing crushing operation; when the crushing construction is carried out, the adjusted spray heads can act on the crushed ground and the body of a constructor at the same time, and although dust generated in the crushing work can be reduced, other liquid can be sputtered to the body of the constructor; if the position of the spray head is not regulated, the spray head does not act on the body of a constructor, but the spray head also does not act on the crushed ground, so that the dust falling effect cannot be achieved, and the dust generated in the crushing work can cause injury to pedestrians or constructors; that is, after the position of the spray head is adjusted, the dust falling can not be guaranteed, and meanwhile, liquid can not be sputtered onto the body of a constructor, so that the progress of crushing work is affected.
Disclosure of Invention
The invention provides a dustproof device for road construction, which solves the problem that water sprayed from a mist spray head can directly act on a road surface generated by dust and can not influence the road surface crushing work of constructors.
In order to achieve the above purpose, the invention adopts the following technical scheme: a dustproof device for road construction comprises a bracket and a dustproof mechanism for vertically acting on the ground; the dustproof mechanism comprises a crushing piece and a power assembly for driving the crushing piece to reciprocate; the power assembly comprises a screw, a nut seat, a guide rod and a power piece for driving the screw to rotate; the power piece is arranged at the top end of the bracket; the nut seat is in threaded connection with the screw rod; the guide rod is fixedly connected with the bracket, and the nut seat is in sliding connection with the guide rod; the crushing piece is arranged on the nut seat; the nut seat is characterized by further comprising a dustproof component which is used for dust falling along with the movement of the nut seat.
The principle and the advantages of the scheme are as follows: the screw is driven to rotate by the power piece, and during the rotation of the screw, the nut seat vertically moves on the screw along the length direction of the guide rod, and during the rotation of the screw, the crushing piece and the nut seat synchronously move; when the nut seat drives the crushing piece to move, the crushing piece starts to work; when the crushing piece is propped against the ground, the crushing piece continuously moves, and the crushing piece crushes the ground; the crushing piece can generate a large amount of dust during the ground crushing, and during the period, the vertical movement of the nut seat enables the dust prevention assembly to carry out dust fall treatment on a large amount of dust generated in the crushing work; the power piece drives the screw rod to rotate reversely, the nut seat moves along the opposite direction of the length direction of the guide rod, the nut seat starts to reset, the crushing piece does not work any more, the crushing piece and the nut seat synchronously reset, and during the period, the dustproof component continues to work, so that dust still remained on the road surface is further subjected to dust fall treatment.
In the prior art, when crushing construction is carried out, the adjusted spray heads can act on the crushed ground and the body of a constructor at the same time, although dust generated in the crushing work can be reduced, other liquid can be sputtered to the body of the constructor; if the position of the spray head is not regulated, the spray head does not act on the body of a constructor, but the spray head also does not act on the crushed ground, so that the dust falling effect cannot be achieved, and the dust generated in the crushing work can cause injury to pedestrians or constructors; after the position of the spray head is adjusted, the dust cannot be reduced, and meanwhile, liquid cannot be sputtered onto a body of a constructor, so that the progress of crushing work is affected; compared with the prior art, the invention drives the crushing part to synchronously move through the vertical movement of the nut seat along the axial direction of the screw rod, when the crushing part crushes a road, the dustproof assembly synchronously works with the crushing part under the action of the nut seat, dust generated by ground crushing is continuously subjected to dust falling treatment by the dustproof assembly, and the action direction of the dustproof assembly faces the ground, so that the dust is ensured not to cause injury to pedestrians and constructors during the crushing of the crushing part, and the dust does not cause environmental pollution.
When the crushing piece finishes crushing the pavement, the crushing piece does not work any more, the nut seat starts to reset, and the crushing piece and the nut seat synchronously reset; during this period, dustproof subassembly still is continuously wasing broken road surface of broken piece under the drive of nut seat, and the road surface after wasing is clean and tidy, for the clearance that follow-up staff carried out the collection of rubble and rubbish promotes operational environment's cleanliness factor, and then effectual improvement staff's work efficiency.
Further, the dustproof assembly comprises a plurality of water outlet parts; the water outlet part comprises a water tank, a plurality of water spray holes and a driving unit for pressurizing the water tank; the water spraying hole comprises a plurality of water outlet holes, the water outlet holes are formed in the end face of the water tank, and the water outlet holes are communicated with the inside of the water tank; the device also comprises a motion assembly for driving the water tank to do circumferential motion by taking the crushing piece as the circle center.
Because the water tank is driven by the motion component and takes the crushing piece as the circle center to do circumferential rotary motion, water sprayed out from the water outlet pore can form a water wall around the crushing piece in the circumferential process of the water tank, dust generated in the crushing process of the crushing piece is blocked by the water wall, the dust and the water wall are mixed to form a water wall mixture, the water wall mixture cannot fly out of the water wall and finally falls onto the ground, and therefore dust generated in the crushing period of the crushing piece can be reduced in dust treatment as much as possible.
In the process that the motion assembly drives the circumferential motion of the water tank, the driving unit pressurizes water in the water tank simultaneously, the pressurized water has certain effort, water is sprayed out from the water outlet pore and can act on the ground, the water acting on the ground is subjected to the reaction of the ground and splashes all around along the opposite direction to form reflection liquid, and the reflection liquid has certain effort, so that the reflection liquid can be mixed with dust scattered on the ground to form mixed liquid, and the mixed liquid finally falls on the ground.
When the water tank is in circumferential movement by taking the crushing part as the center of a circle, and the driving unit is used for pressurizing the water tank at the same time, a water wall is formed around the crushing part, the water wall has a certain acting force, the water wall can act on the ground to form sputtering liquid, the sputtering liquid has a certain acting force, the sputtering liquid can sputter around, the dust falling range is further enlarged, the dust falling effect is further enhanced, dust mixed with the water wall is harmless to workers or pedestrians, and the environment is not polluted.
Further, the motion assembly comprises a fixed block, an annular rack, a first gear, a driving gear and a linkage part for driving the driving gear to rotate; the fixed block is rotationally connected with the water tank, and a connecting rod is fixedly connected between the fixed block and the driving gear; the annular rack is fixedly connected with the bracket; the water tank is positioned between the annular rack and the driving gear; the first gear is fixedly connected with the water tank, and the driving gear and the annular rack are meshed with the first gear.
The linkage part drives the driving gear to rotate, and the water tank and the driving gear synchronously rotate under the action of the connecting rod during the rotation of the driving gear, namely, the water tank revolves around the center of the driving gear; during revolution of the water tank, a first gear fixedly connected to the water tank is meshed with the annular rack respectively, and the first gear rotates to drive the water tank to rotate, namely, the water tank rotates; therefore, when the water tank revolves around the center of the driving gear, the water tank also rotates.
During the rotation of the water tank, water sprayed out of the water outlet pore has a certain centrifugal force, and the water forms rotating liquid under the action of the centrifugal force and can fly to the periphery; the rotary liquid can be mixed with dust which freely flies on the road surface in the movement process of the rotary liquid to form rotary mixed liquid, and the rotary mixed liquid finally falls on the ground, so that the rotary mixed liquid is convenient to clean subsequently.
Further, the linkage part comprises a first bevel gear, a plurality of long shafts and a motion unit for driving the first bevel gear to rotate; the support is fixedly connected with an annular block, the annular block is provided with an annular groove, and the long shaft is in sliding connection with the annular groove; the driving gear and the first bevel gear are fixedly connected with the long shaft.
The motion unit drives the first bevel gear to rotate, and during the rotation of the first bevel gear, the long shaft fixedly connected to the first bevel gear and the first bevel gear synchronously rotate, namely the long shaft slides in the annular groove; during the sliding of the long shaft in the annular groove, the driving gear fixedly connected with the long shaft moves synchronously with the long shaft, so that the driving gear rotates.
Further, the motion unit comprises a first rotating shaft, a second rotating shaft, a worm, a second gear, a worm wheel, a second bevel gear, a belt and a rack fixedly connected to the nut seat; the first rotating shaft, the second rotating shaft and the worm are all in rotating connection with the bracket; the second gear is fixedly connected to the first rotating shaft and meshed with the rack; the turbine and the second bevel gear are fixedly connected on the second rotating shaft; the turbine is meshed with the worm; the first bevel gear is meshed with the second bevel gear; the belt is sleeved between the first rotating shaft and the worm.
During the period that the rack and the nut seat synchronously move vertically downwards along the axial direction of the screw rod, the second gear is meshed with the rack and rotates; during the rotation of the second gear, the first rotating shaft fixedly connected to the second gear synchronously rotates with the second gear; during the rotation of the first rotating shaft, the worm synchronously rotates under the acting force of the belt; during the rotation of the worm, the worm wheel meshed with the worm rotates synchronously, so that the second rotating shaft rotates synchronously; during the rotation of the second rotating shaft, the second bevel gear fixedly connected to the second rotating shaft synchronously rotates, and the first bevel gear rotates due to the meshing of the first bevel gear and the second bevel gear.
Further, the driving unit comprises a piston cylinder, a piston, a cavity formed in the fixed block and a driving piece for driving the piston to reciprocate; the piston cylinder is fixedly connected with the cavity; the piston is respectively connected with the piston cylinder and the fixed block in a sliding way; the water tank is communicated with the piston cylinder; the water tank is communicated with a water outlet pipe, the water outlet pipe is communicated with the water outlet pore, and the water outlet pipe is provided with a one-way valve.
The driving piece drives the piston to do reciprocating motion, and water in the water tank is pressurized during the reciprocating motion of the piston, so that the water has certain acting force when being sprayed out from the water outlet pore; during the vertical downward movement of the piston, the piston pressurizes water in the water tank, the one-way valve is opened, and the water enters the water outlet pore through the water outlet pipe to be sprayed out; during the vertical upward movement of the piston, the piston stores force, the one-way valve is closed, and water cannot be sprayed out through the water outlet pipe.
Further, the driving piece comprises a cam, a semicircular disc sliding block, a first spring, a second spring sleeved on the piston and a sliding groove arranged on the bracket; the cam is fixedly connected with the worm, and the cam is propped against the semicircular disc slide block; the semicircular disc sliding block is in sliding connection with the sliding groove, and two ends of the first spring are respectively connected with the semicircular disc sliding block and the sliding groove; the piston is propped against the semicircular disc sliding block, and two ends of the second spring are respectively connected with the piston cylinder and the piston.
Along with the rotation of the second rotating shaft, a cam fixedly connected to the worm moves synchronously with the second rotating shaft; when the bulge of the cam is propped against the semicircular disc, the semicircular disc sliding block vertically moves downwards in the sliding groove, the first spring is compressed, the piston propped against the semicircular disc synchronously moves vertically downwards in the piston cylinder, and the second spring is compressed; when the protruding part of the cam is not propped against the semicircular disc sliding block any more, the semicircular disc sliding block is driven by the first spring to reset, the semicircular disc sliding block vertically moves upwards in the sliding groove, the piston is driven by the second spring to reset, and the piston vertically moves upwards in the piston cylinder.
Further, the device also comprises a flaring part which moves synchronously with the first gear to increase the diameter of the water outlet; the flaring part comprises an adjusting disc, a plurality of water outlet hole groups arranged at the bottom of the water tank and a power unit for driving the adjusting disc to rotate unidirectionally; the regulating disc is provided with a groove, the inner wall of the groove is attached to the bottom of the water tank, and the water tank is rotationally connected with the groove; the groove is provided with a first through hole which is communicated with the water spraying hole; the water outlet groups and the water spray holes are circumferentially arranged at the bottom of the water tank at intervals; the water outlet group comprises a plurality of circumferentially equidistant water outlet holes; the water outlet pipe is positioned in the water tank, the water outlet hole is communicated with the water outlet pipe, and the water outlet hole is staggered with the first through hole; when the adjusting disk rotates, the first through hole can be communicated with the water outlet hole and the water spraying hole.
During the period that the water tank makes circumferential rotation movement with the center of the driving gear, the adjusting disk and the water tank synchronously move; during the movement of the adjusting disk, the adjusting disk can only rotate unidirectionally under the action of the power unit; during the ground crushing of the crushing piece, the adjusting disk does not rotate until the crushing piece starts to reset after the crushing work of the crushing piece is finished, at the moment, the first gear rotates in the opposite direction, and the adjusting disk starts to rotate under the action of the power unit; during the rotation of the adjusting disk, the first through hole can be communicated with the water outlet hole group and the water spraying holes; when the first through hole is communicated with the water outlet hole group, the first through hole is staggered with the water spraying hole, and water is sprayed out along the first through hole through the water outlet hole group; when the first through hole is communicated with the water spraying hole, the first through hole is staggered with the water outlet hole group, and water is sprayed out along the first through hole through the water spraying hole; in other words, during the resetting period of the crushing member, water sprayed from the water outlet hole group and the water spraying holes is intermittently discharged, so that the water consumption can be saved, and the water utilization efficiency can be improved.
During resetting of the crushing piece, the water outlet hole group is additionally arranged, so that when the adjusting disk rotates, the first through hole is intermittently communicated with the water outlet hole group and the water outlet hole group, and the water spraying frequency of the water tank is increased; the water tank water spray frequency increases, in the reset period of broken spare, can increase the washing number of times to ground, and the clean dustless in ground after the washing is convenient for follow-up constructor to the further processing of road surface.
Further, the power unit comprises a short shaft, a cylindrical block, a cylindrical ring, a ratchet wheel and a pawl; the adjusting disc and the cylindrical block are fixedly connected with the short shaft; the short shaft is rotationally connected with the bottom of the water tank; the adjusting disc is positioned between the water tank and the cylindrical block; the cylindrical ring is fixedly connected with the water tank; the ratchet wheel is fixedly connected with the inner wall of the cylindrical ring; the pawl is hinged with the cylindrical block and meshed with the ratchet wheel; the upper periphery Xiang Dengju of the cylindrical block is provided with a plurality of second through holes, and the first through holes are communicated with the second through holes.
When the nut seat moves vertically downwards along the axial direction of the screw rod, the water tank revolves around the center of the driving gear, and the cylindrical ring and the water tank synchronously move during the period that the water tank rotates; the ratchet wheel fixedly connected to the inner wall of the cylindrical ring rotates synchronously with the cylindrical ring, and the pawl hinged to the cylindrical block is meshed with the ratchet wheel, but the ratchet wheel and the pawl can only bear force unidirectionally; during this period, the pawl slides on the ratchet wheel, the relative positions of the ratchet wheel and the pawl can be changed continuously, the ratchet wheel can not clamp the pawl, and therefore, the pawl is not stressed, and further, the pawl can not drive the cylindrical block to rotate, so that the short shaft fixedly connected to the cylindrical block also does not rotate, namely, the adjusting disc fixedly connected with the short shaft also does not rotate.
When the nut seat moves vertically upwards along the axial direction of the screw rod, the nut seat resets, namely the water tank reverses; during the reverse rotation of the water tank, the cylindrical ring rotates in the reverse direction, a ratchet wheel fixedly connected to the inner wall of the cylindrical ring rotates synchronously with the cylindrical ring, and a pawl hinged to the cylindrical block is meshed with the ratchet wheel; during the reverse rotation of the ratchet wheel, the pawl is clamped by the ratchet wheel, and the relative position of the pawl and the ratchet wheel cannot be changed, so that the pawl is stressed and cannot slide on the ratchet wheel; during the rotation of the ratchet wheel, the pawl hinged on the cylindrical block is stressed, the pawl and the ratchet wheel synchronously rotate, the cylindrical block and the pawl synchronously rotate, and the short shaft fixedly connected on the cylindrical block synchronously rotates with the cylindrical block; during the rotation of the short shaft, an adjusting disk fixedly connected to the short shaft synchronously rotates with the short shaft; during the rotation of the adjusting disk, the first through hole can be communicated with the water outlet hole group and the water spraying holes.
Further, the diameter of the water outlet hole is larger than the sum of the diameters of the water outlet holes.
Because the diameter of the water outlet hole group is larger than that of the water outlet pore, in a state that the flow rate of the water outlet pipe is fixed, the water outlet flow rate of the water outlet hole group is larger than that of the water outlet pore; during the water outlet period of the water outlet hole group, the flow of the water outlet hole group is large, the acting force is small, water sprayed out of the water outlet hole group acts on the ground, the water is subjected to ground reaction force and forms cleaning liquid, the cleaning liquid has fluidity, namely, the cleaning liquid can not be sprayed to the periphery in a large range, and then the cleaning liquid can be used for flushing soil on the road surface and the mixed liquid sprayed on the road surface, the flushed road surface is clean and tidy, and the cleanliness of the working environment of constructors is improved.
Drawings
Fig. 1 is a schematic structural view of an embodiment of a dust-proof apparatus for road construction according to the present invention.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is a schematic diagram of the structure in the right view direction of fig. 1.
Fig. 4 is a partial cross-sectional view of the front view of fig. 1.
Fig. 5 is an enlarged view at B in fig. 4.
Fig. 6 is an exploded view of the flare of fig. 4 in a top view.
Fig. 7 is an exploded view of the flaring in fig. 4 looking up.
Fig. 8 is an enlarged view at C in fig. 7.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: the device comprises a bracket 1, a first motor 2, a screw 3, a nut seat 4, a rack 5, a first rotating shaft 6, a belt 7, a worm 8, a first bevel gear 9, a second bevel gear 10, a cam 11, a piston 12 and a piston cylinder 13, a second spring 14, a chamber 15, a semicircular disc sliding block 16, a sliding chute 17, a fixed block 18, a water tank 19, a connecting rod 20, a driving gear 21, a first gear 22, a second gear 23, a cylindrical ring 24, an annular rack 25, a cylindrical block 26, a long shaft 27, an adjusting disc 28, a first through hole 29, a second through hole 30, a ratchet 31, a pawl 32, a short shaft 33, a water outlet hole group 34, a water outlet pore 35, a breaking piece 36 and an annular block 37.
Examples are substantially as shown in figures 1, 2, 3, 4, 5, 6, 7, 8:
the embodiment of the invention provides dustproof equipment for road construction, which comprises: comprises a bracket 1 and a dustproof mechanism for vertically acting on the ground; the dustproof mechanism comprises a crushing piece and a power assembly for driving the crushing piece to reciprocate; the power component comprises a screw rod 3, a nut seat 4, a guide rod and a power piece for driving the screw rod 3 to rotate; the power piece is a first motor 2, the first motor 2 is fixedly connected to the top end of the bracket 1, an output shaft of the first motor 2 is fixedly connected with a screw rod 3, and the screw rod 3 is rotatably connected with the bracket 1; the nut seat 4 is in threaded connection with the screw rod 3, the guide rod is fixedly connected with the bracket 1, and the nut seat 4 is in sliding connection with the guide rod; the crushing piece 36 is a second motor and a drill bit; the second motor is fixedly connected to one end, far away from the first motor 2, of the nut seat 4, and an output shaft of the second motor is fixedly connected with the drill bit; the output shaft of the second motor drives the drill bit to rotate, and the drill bit acts on the ground to crush the ground; and a dust-proof component which can carry out dust fall along with the movement of the nut seat 4.
The dustproof component comprises a plurality of water outlet parts; the water outlet part comprises a water tank 19, a plurality of water spray holes and a driving unit for pressurizing the water tank 19; the water spraying hole comprises a plurality of water outlet holes 35, the water outlet holes 35 are formed in the end face of the water tank 19, and the water outlet holes 35 are communicated with the inside of the water tank 19; the water tank 19 is cylindrical in shape, and a sufficient amount of water is stored in the water tank 19; and a moving assembly for driving the water tank 19 to move circumferentially around the crushing member 36.
The motion assembly comprises a fixed block 18, an annular rack 25, a first gear 22, a driving gear 21 and a linkage part for driving the driving gear 21 to rotate; the water tank 19 is rotationally connected with the bottom of the fixed block 18, and a connecting rod 20 is fixedly connected between the fixed block 18 and the driving gear 21; the annular rack 25 is fixedly connected with the bracket 1; the water tank 19 is positioned between the annular rack 25 and the driving gear 21; the first gear 22 is fixedly connected with the outer wall of the water tank 19, and the driving gear 21 and the annular rack 25 are meshed with the first gear 22. The linkage part comprises a first bevel gear 9, a plurality of long shafts 27 and a motion unit for driving the first bevel gear 9 to rotate; an annular block 37 is fixedly connected to the bracket 1, the annular block 37 is positioned above the first bevel gear 9, the first bevel gear 9 is positioned above the driving gear 21, an annular groove is formed in the annular block 37, and the long shaft 27 is in sliding connection with the annular groove; the driving gear 21 and the first bevel gear 9 are fixedly connected with the long shaft 27; the driving gear 21 is provided with a first round hole for the vertical movement of the nut seat 4, and the first bevel gear 9 is provided with a second round hole for the vertical movement of the nut seat 4.
The motion unit comprises a first rotating shaft 6, a second rotating shaft, a worm 8, a second gear 23, a worm wheel, a second bevel gear 10, a belt 7 and a rack 5 fixedly connected on the nut seat 4; the first rotating shaft 6, the second rotating shaft and the worm 8 are all in rotary connection with the bracket 1; the first rotating shaft 6 is positioned above the worm 8, the worm 8 is positioned above the second rotating shaft, and the axial direction of the worm 8 is perpendicular to the axial direction of the second rotating shaft; the second gear 23 is fixedly connected to the first rotating shaft 6, and the second gear 23 is meshed with the rack 5; the turbine and the second bevel gear 10 are fixedly connected on the second rotating shaft; the worm wheel is meshed with the worm 8; the first bevel gear 9 is positioned above the second bevel gear 10, and the first bevel gear 9 is meshed with the second bevel gear 10; the belt 7 is sleeved between the first rotating shaft 6 and the worm 8.
The driving unit comprises a piston cylinder 13, a piston 12, a chamber 15 arranged in a fixed block 18 and a driving piece for driving the piston 12 to reciprocate; the piston cylinder 13 is fixedly connected with the cavity 15; the piston 12 is respectively connected with the piston cylinder 13 and the fixed block 18 in a sliding way; the water tank 19 comprises a water tank body and an inner chamber arranged in the water tank body, the water tank body is communicated with the piston cylinder 13, and a conduit is communicated between the water tank body and the piston cylinder 13; a water outlet pipe is arranged between the water tank body and the water spraying hole, the water outlet pipe is positioned in the inner chamber and comprises a water outlet pipe body and a plurality of branch pipes, the branch pipes are communicated with the water outlet pipe body, the water outlet pipe body is communicated with the water tank body, a one-way valve is arranged on the water outlet pipe body, the opening direction of the one-way valve is from top to bottom, and the water spraying hole is communicated with the branch pipes.
The driving piece comprises a cam 11, a semicircular disc sliding block 16, a first spring, a second spring 14 sleeved on the piston 12 and a sliding groove 17 arranged on the bracket 1; the cam 11 is fixedly connected with the worm 8, and the semicircular disc sliding block 16 comprises a sliding block body and a sliding rod which are fixedly connected; the cam 11 is positioned above the sliding block body, and the cam 11 is propped against the sliding block body; the slide block body is positioned between the first bevel gear 9 and the driving gear 21; the sliding rod is in sliding connection with the sliding groove 17, and two ends of the first spring are respectively connected with the sliding rod and the sliding groove 17; the piston 12 is propped against the slide block body, and two ends of the second spring 14 are respectively connected with the piston cylinder 13 and the piston 12.
Further comprising a flared portion which increases the diameter of the water outlet in synchronism with the movement of the first gear 22; the flaring part comprises an adjusting disk 28, a plurality of water outlet hole groups 34 arranged at the bottom of the water tank body and a power unit for driving the adjusting disk 28 to rotate unidirectionally; the adjusting disk 28 is provided with a groove, the inner wall of the groove is attached to the bottom of the water tank 19, and the water tank 19 is rotationally connected with the groove; the groove is provided with a first through hole 29, and the first through hole 29 is communicated with the water spraying hole; the water outlet hole groups 34 and the water spray holes are circumferentially arranged at the bottom of the water tank 19 at intervals; the water outlet hole group 34 comprises a plurality of water outlet holes which are circumferentially equidistant, the water outlet holes are communicated with the branch pipes, the distance between the water outlet holes and the water spraying holes is equal to the distance between two adjacent water outlet holes, and the water outlet holes are staggered with the first through holes 29; the diameter of the water outlet hole is larger than the sum of the diameters of the water outlet holes 35; when the adjusting disk 28 rotates, the first through hole 29 can be communicated with the water outlet hole and the water spraying hole.
The power unit comprises a short shaft 33, a cylindrical block 26, a cylindrical ring 24, a ratchet wheel 31 and a pawl 32; the adjusting disk 28 and the cylindrical block 26 are fixedly connected with a short shaft 33; the adjusting disk 28 is located between the tank body and the cylindrical block 26; the cylindrical ring 24 is fixedly connected with the water tank 19; the ratchet wheel 31 is fixedly connected with the inner wall of the cylindrical ring 24; pawl 32 is hinged to cylindrical block 26, pawl 32 being engaged with ratchet wheel 31; the cylindrical block 26 is provided with a plurality of second through holes 30 circumferentially spaced apart, and the first through holes 29 are communicated with the second through holes 30.
The specific implementation process is as follows:
the first motor 2 is started, the output shaft of the first motor 2 drives the screw rod 3 to rotate, and during the rotation of the screw rod 3, the nut seat 4 vertically moves downwards on the screw rod 3 along the length direction of the guide rod. During this time, the breaking member 36 moves in synchronism with the nut seat 4; when the nut seat 4 drives the crushing piece 36 to move, the crushing piece 36 is started; when the crushing piece 36 abuts against the ground, the crushing piece 36 continues to move, and the crushing piece 36 crushes the ground; the crushing member 36 generates a large amount of dust during the ground crushing, the dust can be treated by the circumferential water spraying movement of the water tank body, and the treated dust has no pollution to the environment and no harm to pedestrians or constructors.
The method specifically comprises the following steps: the rack 5 fixedly connected to the nut seat 4 and the nut seat 4 synchronously move vertically downwards along the axial direction of the screw 3; during the vertical downward movement of the rack 5, the second gear 23 is meshed with the rack 5, and the second gear 23 rotates; during the rotation of the second gear 23, the first rotating shaft 6 fixedly connected to the second gear 23 rotates synchronously with the second gear 23; during the rotation of the first shaft 6, the worm 8 rotates synchronously under the action of the belt 7; during the rotation of the worm 8, the worm wheel meshed with the worm 8 synchronously rotates, and the second rotating shaft synchronously rotates; during the rotation of the second rotating shaft, the second bevel gear 10 fixedly connected to the second rotating shaft rotates synchronously, and the first bevel gear 9 rotates due to the engagement of the first bevel gear 9 and the second bevel gear 10.
During the rotation of the first bevel gear 9, the long shaft 27 fixedly connected to the first bevel gear 9 rotates synchronously with the first bevel gear 9, namely the long shaft 27 slides in the annular groove; during the sliding of the long shaft 27 in the annular groove, the driving gear 21 fixedly connected with the long shaft 27 moves synchronously with the long shaft 27, and the driving gear 21 rotates.
During the rotation of the driving gear 21, the water tank body and the driving gear 21 synchronously rotate under the action of the connecting rod 20, namely, the water tank 19 revolves around the center of the driving gear 21; during the revolution of the water tank body, the first gear 22 fixedly connected to the water tank body is meshed with the annular rack 25 respectively, the first gear 22 rotates, and then the first gear 22 drives the water tank body to rotate, namely the water tank body rotates; therefore, when the water tank 19 revolves around the center of the driving gear 21, the water tank 19 rotates.
The cam 11 fixedly connected to the worm 8 moves synchronously with the worm 8 while the water tank body moves; when the protruding part of the cam 11 is propped against the slide block body, the slide bar vertically moves downwards in the chute 17, the slide block body and the slide bar synchronously move, the first spring compresses, the piston 12 propped against the slide block body synchronously moves vertically downwards in the piston cylinder 13, and the second spring 14 compresses; when the protruding part of the cam 11 is not propped against the sliding block body any more, the first spring drives the sliding bar to reset, the sliding bar moves vertically upwards in the sliding groove 17, the sliding block body and the sliding bar synchronously move, the second spring 14 drives the piston 12 to reset, and the piston 12 moves vertically upwards in the piston cylinder 13.
During the reciprocating motion of the piston 12, the water in the water tank body is pressurized, so that the water has a certain acting force when being sprayed out of the water outlet pore 35; during the vertical downward movement of the piston 12, the piston 12 pressurizes the water in the water tank body, the one-way valve is opened, and the water enters the water outlet pore 35 from the top to the bottom along the branch pipe through the water outlet pipe body and is sprayed out; during the vertical upward movement of the piston 12, the piston 12 stores force, the one-way valve is closed, and water cannot be sprayed out through the water outlet pipe body
During revolution of the water tank body, water sprayed from the water outlet holes 35 can form a water wall around the crushing member 36, dust generated in the crushing process of the crushing member 36 is blocked by the water wall, the dust and the water wall are mixed to form a water wall mixture, the water wall mixture cannot fly out of the water wall and finally falls onto the ground, and therefore dust generated during the crushing process of the crushing member 36 can be reduced in number.
Meanwhile, during revolution of the water tank body, the water pressurized by the piston 12 has a certain acting force, the water is sprayed out of the water outlet holes 35 to act on the ground, the water acting on the ground is sprayed to the periphery along the opposite direction under the reaction of the ground to form reflective liquid, the reflective liquid has a certain acting force, the reflective liquid and dust scattered on the ground are mixed to form mixed liquid, and the mixed liquid finally falls on the ground.
That is, when the water tank 19 moves circumferentially around the breaking member 36 and the piston 12 pressurizes water in the water tank body, a water wall is formed around the breaking member 36, the water wall has a certain force, the water wall can act on the ground to form a sputtering liquid, the sputtering liquid can sputter around, the dust falling range is further enlarged, the dust falling effect is further enhanced, dust mixed with the water wall is harmless to workers or pedestrians, and the environment is pollution-free.
During rotation of the water tank 19, water ejected from the water outlet holes 35 has a certain centrifugal force, and the water forms a rotating liquid by the centrifugal force and can fly around; the rotary liquid can be mixed with dust which freely flies on the road surface in the movement process of the rotary liquid to form rotary mixed liquid, and the rotary mixed liquid finally falls on the ground, so that the rotary mixed liquid is convenient to clean subsequently.
When the crushing member 36 finishes crushing the road surface, the crushing member 36 does not work any more, the crushing member 36 and the nut seat 4 are synchronously reset, during the period, the water tank body continues to discharge water, the road surface crushed by the crushing member 36 is cleaned, and dust still remained on the road surface is further subjected to dust fall treatment; the road surface after the washing is clean and tidy, promotes operational environment's cleanliness factor for the collection of following staff's carry out the rubble and the clearance of rubbish, and then effectual improvement staff's work efficiency.
When the nut seat 4 moves vertically downwards along the axial direction of the screw 3, and the water tank body revolves around the center of the driving gear 21, the cylindrical ring 24 and the water tank body synchronously move during the period that the water tank body rotates; ratchet wheel 31 fixedly connected to the inner wall of cylindrical ring 24 rotates synchronously with cylindrical ring 24, pawl 31 hinged to cylindrical block 26 is meshed with ratchet wheel 32, but ratchet wheel 32 and pawl 31 are only stressed unidirectionally; during this time, the pawl 31 slides on the ratchet 32, the relative positions of the ratchet 32 and the pawl 31 change continuously, the ratchet 32 cannot catch the pawl 31, and therefore the pawl 31 is not stressed and the pawl 31 cannot rotate the cylindrical block 26, so that the stub shaft 33 fixedly connected to the cylindrical block 26 does not rotate, i.e. the adjusting disk 28 fixedly connected to the stub shaft 33 does not rotate either
During the resetting of the nut seat 4, the water tank 19 rotates in the opposite direction, i.e. the water tank 19 reverses; during the reverse rotation of the water tank 19, the cylindrical ring 24 rotates in the opposite direction, the ratchet wheel 31 fixedly connected to the inner wall of the cylindrical ring 24 rotates synchronously with the cylindrical ring 24, and the pawl 32 hinged on the cylindrical block 26 is meshed with the ratchet wheel 31; during the reverse rotation of the ratchet wheel 31, the pawl 32 is caught by the ratchet wheel 31, the relative positions of the pawl 32 and the ratchet wheel 31 are not changed, and therefore, the pawl 32 is stressed, and the pawl 32 cannot slide on the ratchet wheel 31; during the rotation of the ratchet wheel 31, the pawl 32 hinged on the cylindrical block 26 is stressed, the pawl 32 and the ratchet wheel 31 rotate synchronously, the cylindrical block 26 and the pawl 32 rotate synchronously, and the short shaft 33 fixedly connected on the cylindrical block 26 and the cylindrical block 26 rotate synchronously; during rotation of the stub shaft 33, the adjustment disk 28, which is fixedly attached to the stub shaft 33, rotates in synchronization with the stub shaft 33.
The first through hole 29 can communicate with the water outlet hole, the water spraying hole during rotation of the regulating disk 28; when the first through hole 29 is communicated with the water outlet hole, the first through hole 29 is staggered with the water spraying hole, and water is sprayed out along the first through hole 29 through the water outlet hole; while the first through hole 29 communicates with the water spraying hole, the first through hole 29 is staggered with the water outlet hole, and water is sprayed along the first through hole 29 through the water spraying hole.
The number of water spraying times of the water tank 19 is increased by additionally arranging the water outlet; the number of water spraying times of the water tank 19 is increased, and the number of cleaning times to the ground can be increased during the resetting of the nut seat 4; meanwhile, water sprayed from the water outlet hole and the water spraying hole is intermittently discharged, so that the water consumption can be saved, and the water utilization efficiency is improved; the cleaned ground is clean and dust-free, and is convenient for the subsequent workers to further process the pavement.
Because the diameter of the water outlet hole is larger than that of the water outlet pore 35, in a state that the flow of the water outlet pipe body is fixed, the water outlet flow of the water outlet hole is larger than that of the water outlet pore 35; in the water outlet period of the water outlet hole, the flow of the water outlet hole is large in unit time, the acting force is small, water sprayed out of the water outlet hole acts on the ground, the water is subjected to ground reaction force and forms cleaning liquid, the cleaning liquid has fluidity, namely the cleaning liquid can not be sprayed to the periphery in a large range, and then the cleaning liquid can be used for flushing soil on a road surface and the sprayed mixed liquid, so that the flushed road surface is clean and tidy, and the subsequent further treatment of the road surface is facilitated.
The foregoing is merely exemplary of the present invention, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present invention, and these should also be regarded as the protection scope of the present invention, which does not affect the effect of the implementation of the present invention and the practical applicability of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (10)
1. The utility model provides a dustproof equipment for road construction which characterized in that: comprises a bracket and a dustproof mechanism for vertically acting on the ground; the dustproof mechanism comprises a crushing piece and a power assembly for driving the crushing piece to reciprocate; the power assembly comprises a screw, a nut seat, a guide rod and a power piece for driving the screw to rotate; the power piece is arranged at the top end of the bracket; the nut seat is in threaded connection with the screw rod; the guide rod is fixedly connected with the bracket, and the nut seat is in sliding connection with the guide rod; the crushing piece is arranged on the nut seat; the nut seat is characterized by further comprising a dustproof component which is used for dust falling along with the movement of the nut seat.
2. A dust-proof apparatus for road construction according to claim 1, wherein: the dustproof assembly comprises a plurality of water outlet parts; the water outlet part comprises a water tank, a plurality of water spray holes and a driving unit for pressurizing the water tank; the water spraying hole comprises a plurality of water outlet holes, the water outlet holes are formed in the end face of the water tank, and the water outlet holes are communicated with the inside of the water tank; the device also comprises a motion assembly for driving the water tank to do circumferential motion by taking the crushing piece as the circle center.
3. A dust-proof apparatus for road construction according to claim 2, wherein: the motion assembly comprises a fixed block, an annular rack, a first gear, a driving gear and a linkage part for driving the driving gear to rotate; the fixed block is rotationally connected with the water tank, and a connecting rod is fixedly connected between the fixed block and the driving gear; the annular rack is fixedly connected with the bracket; the water tank is positioned between the annular rack and the driving gear; the first gear is fixedly connected with the water tank, and the driving gear and the annular rack are meshed with the first gear.
4. A dust-proof apparatus for road construction according to claim 3, wherein: the linkage part comprises a first bevel gear, a plurality of long shafts and a motion unit for driving the first bevel gear to rotate; the support is fixedly connected with an annular block, the annular block is provided with an annular groove, and the long shaft is in sliding connection with the annular groove; the driving gear and the first bevel gear are fixedly connected with the long shaft.
5. The dust-proof apparatus for road construction according to claim 4, wherein: the motion unit comprises a first rotating shaft, a second rotating shaft, a worm, a second gear, a worm wheel, a second bevel gear, a belt and a rack fixedly connected to the nut seat; the first rotating shaft, the second rotating shaft and the worm are all in rotating connection with the bracket; the second gear is fixedly connected to the first rotating shaft and meshed with the rack; the turbine and the second bevel gear are fixedly connected on the second rotating shaft; the turbine is meshed with the worm; the first bevel gear is meshed with the second bevel gear; the belt is sleeved between the first rotating shaft and the worm.
6. The dust-proof apparatus for road construction according to claim 5, wherein: the driving unit comprises a piston cylinder, a piston, a cavity formed in the fixed block and a driving piece for driving the piston to reciprocate; the piston cylinder is fixedly connected with the cavity; the piston is respectively connected with the piston cylinder and the fixed block in a sliding way; the water tank is communicated with the piston cylinder; the water tank is communicated with a water outlet pipe, the water outlet pipe is communicated with the water outlet pore, and the water outlet pipe is provided with a one-way valve.
7. The dust-proof apparatus for road construction according to claim 6, wherein: the driving piece comprises a cam, a semicircular disc sliding block, a first spring, a second spring sleeved on the piston and a sliding groove arranged on the bracket; the cam is fixedly connected with the worm, and the cam is propped against the semicircular disc slide block; the semicircular disc sliding block is in sliding connection with the sliding groove, and two ends of the first spring are respectively connected with the semicircular disc sliding block and the sliding groove; the piston is propped against the semicircular disc sliding block, and two ends of the second spring are respectively connected with the piston cylinder and the piston.
8. The dust-proof apparatus for road construction according to claim 7, wherein: the device also comprises a flaring part which moves synchronously with the first gear to increase the diameter of the water outlet; the flaring part comprises an adjusting disc, a plurality of water outlet hole groups arranged at the bottom of the water tank and a power unit for driving the adjusting disc to rotate unidirectionally; the regulating disc is provided with a groove, the inner wall of the groove is attached to the bottom of the water tank, and the water tank is rotationally connected with the groove; the groove is provided with a first through hole which is communicated with the water spraying hole; the water outlet groups and the water spray holes are circumferentially arranged at the bottom of the water tank at intervals; the water outlet group comprises a plurality of circumferentially equidistant water outlet holes; the water outlet pipe is positioned in the water tank, the water outlet hole is communicated with the water outlet pipe, and the water outlet hole is staggered with the first through hole; when the adjusting disk rotates, the first through hole can be communicated with the water outlet hole and the water spraying hole.
9. The dust-proof apparatus for road construction according to claim 8, wherein: the power unit comprises a short shaft, a cylindrical block, a cylindrical ring, a ratchet wheel and a pawl; the adjusting disc and the cylindrical block are fixedly connected with the short shaft; the short shaft is rotationally connected with the bottom of the water tank; the adjusting disc is positioned between the water tank and the cylindrical block; the cylindrical ring is fixedly connected with the water tank; the ratchet wheel is fixedly connected with the inner wall of the cylindrical ring; the pawl is hinged with the cylindrical block and meshed with the ratchet wheel; the upper periphery Xiang Dengju of the cylindrical block is provided with a plurality of second through holes, and the first through holes are communicated with the second through holes.
10. The dust-proof apparatus for road construction according to claim 9, wherein: the diameter of the water outlet hole is larger than the sum of the diameters of the water outlet holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310414833.1A CN116196715B (en) | 2023-04-18 | 2023-04-18 | Dustproof equipment for road construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310414833.1A CN116196715B (en) | 2023-04-18 | 2023-04-18 | Dustproof equipment for road construction |
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| CN116196715A true CN116196715A (en) | 2023-06-02 |
| CN116196715B CN116196715B (en) | 2023-08-29 |
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| CN209759990U (en) * | 2018-12-28 | 2019-12-10 | 河南和兴工程建设有限公司 | Old concrete road surface breaker of adjustable |
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| CN112095431A (en) * | 2020-09-15 | 2020-12-18 | 王丹丹 | Pavement crushing equipment for highway construction |
| CN112281617A (en) * | 2020-11-03 | 2021-01-29 | 张雪丽 | Municipal construction is with concrete road surface demolishs breaker |
| CN114832554A (en) * | 2022-05-13 | 2022-08-02 | 曾国梁 | Building site construction dust device |
| CN217419265U (en) * | 2022-03-26 | 2022-09-13 | 山东天银混凝土有限公司 | Material crushing equipment for concrete processing |
| CN217613794U (en) * | 2022-05-17 | 2022-10-21 | 武汉市市政路桥有限公司 | Broken dust device in road surface for building highway |
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2023
- 2023-04-18 CN CN202310414833.1A patent/CN116196715B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209759990U (en) * | 2018-12-28 | 2019-12-10 | 河南和兴工程建设有限公司 | Old concrete road surface breaker of adjustable |
| CN210395067U (en) * | 2019-07-06 | 2020-04-24 | 南通市规划设计院有限公司 | Dust collector that makes an uproar falls of concrete breaker pneumatic pick |
| CN112095431A (en) * | 2020-09-15 | 2020-12-18 | 王丹丹 | Pavement crushing equipment for highway construction |
| CN112281617A (en) * | 2020-11-03 | 2021-01-29 | 张雪丽 | Municipal construction is with concrete road surface demolishs breaker |
| CN217419265U (en) * | 2022-03-26 | 2022-09-13 | 山东天银混凝土有限公司 | Material crushing equipment for concrete processing |
| CN114832554A (en) * | 2022-05-13 | 2022-08-02 | 曾国梁 | Building site construction dust device |
| CN217613794U (en) * | 2022-05-17 | 2022-10-21 | 武汉市市政路桥有限公司 | Broken dust device in road surface for building highway |
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| CN116196715B (en) | 2023-08-29 |
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