CN210561633U - Road router with piece cleaning device - Google Patents

Road router with piece cleaning device Download PDF

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Publication number
CN210561633U
CN210561633U CN201920821996.0U CN201920821996U CN210561633U CN 210561633 U CN210561633 U CN 210561633U CN 201920821996 U CN201920821996 U CN 201920821996U CN 210561633 U CN210561633 U CN 210561633U
Authority
CN
China
Prior art keywords
sculpture
frame
dust
router
push plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201920821996.0U
Other languages
Chinese (zh)
Inventor
闫海涛
杜国站
孙钰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongnengjian Road And Bridge Engineering Co ltd
Original Assignee
Tianjin Urban Construction Road And Bridge Engineering Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianjin Urban Construction Road And Bridge Engineering Co ltd filed Critical Tianjin Urban Construction Road And Bridge Engineering Co ltd
Priority to CN201920821996.0U priority Critical patent/CN210561633U/en
Application granted granted Critical
Publication of CN210561633U publication Critical patent/CN210561633U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a road router with piece cleaning device belongs to road construction's technical field, and it includes the frame, and the one end department of frame is provided with the push rod, and the bottom of frame is provided with a plurality of gyro wheels, and the bottom of frame is provided with the sculpture device, and the sculpture device is including rotating the sculpture axle of connecting and the sculpture sword that the sculpture axle outer wall was located to the cover in the frame, and the sculpture axle is connected with drive sculpture axle pivoted driving piece, and one side that the sculpture device is close to the push rod is provided with and is used for clearing up the clastic clearance subassembly, the one end level that the push rod was kept away from in the frame is provided with the push pedal, and the bottom and the road surface of push pedal flush, and the level is provided with the dust removal brush between push pedal and the sculpture device, the top of dust removal brush and the. The utility model discloses have the effect that reduces rubble and fine sand to the wearing and tearing of graver.

Description

Road router with piece cleaning device
Technical Field
The utility model belongs to the technical field of the technique of road construction and specifically relates to a road router with piece cleaning device is related to.
Background
After the cement pavement is poured, in order to prevent the vehicle from skidding on the cement pavement, the grain is transversely cut on the pavement by a carving machine.
The existing Chinese patent application with the reference publication number of CN207619801U discloses a road router, which comprises a frame arranged on the ground, wherein the bottom end of the frame is provided with a router device, the router device comprises a router shaft and a router, the router shaft is rotationally connected with the frame, the router sleeve is arranged on the outer wall of the router shaft and is fixedly connected with the outer wall, a driving piece for driving the router device to rotate is arranged on the frame, a cleaning assembly is also arranged on the frame and comprises a suction fan fixed on the frame, the suction fan is communicated with a suction pipe, one end, away from the suction fan, of the suction pipe is provided with an open-ended suction hood, an opening of the suction hood faces the router device, and a baffle is arranged between the router device and the suction hood.
During the use, drive the sculpture device by the driving piece and rotate in order to carry out the sculpture to the road surface, will produce certain piece at the sculpture in-process, the piece will be thrown away along sculpture device pivoted direction, blocks the back through the baffle, and the overwhelming majority piece can drop to sculpture device and induced draft between the cover, then is inhaled by the cover that induced drafts again to reduce the piece and fall to the possibility on ground, the cleanliness on road surface when ensureing the sculpture.
The above prior art solutions have the following drawbacks: when broken stones and fine sand exist on the road surface and the graver is contacted with the broken stones or the fine sand, the cutting edge of the graver can be abraded.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a road router with piece cleaning device reduces rubble and fine sand to the wearing and tearing of burin.
The above object of the present invention can be achieved by the following technical solutions:
the utility model provides a road router with piece cleaning device, includes the frame, the one end department of frame is provided with the push rod, and the bottom of frame is provided with a plurality of gyro wheels, and the bottom of frame is provided with the sculpture device, and the sculpture device includes rotates the sculpture axle of connecting and the sculpture sword that the sculpture axle outer wall was located to the cover in the frame, and the sculpture hub connection has drive sculpture axle pivoted driving piece, and one side that the sculpture device is close to the push rod is provided with and is used for clearing up the clastic clearance subassembly, the one end level that the push rod was kept away from to the frame is provided with the push pedal, and the bottom and the road surface of push pedal flush, and the level is provided with the dust removal brush between push pedal and the sculpture device, the top of dust removal brush and the bottom fixed.
By adopting the technical scheme, when the road surface needs to be grooved, the driving piece drives the grooving device to rotate, and then the worker pushes the push rod, so that the roller continuously walks along the road surface, and the road surface grooving operation is realized; the rack moves along with the push plate and the dust removing brush in the walking process, and when broken stones exist on the road surface, the broken stones can be pushed away by the push plate, so that the abrasion of the broken stones on the carving knife is reduced; the dust removal brush can sweep fine sand on the road surface, improves the cleanliness of the road surface, sweeps away obstacles for the engraving device, further reduces the abrasion to the engraving knife, and prolongs the service life of the engraving knife.
The utility model discloses further set up to: the push pedal is L form, and the bottom of push pedal extends to the direction of keeping away from the frame.
Through adopting above-mentioned technical scheme, the push pedal sets up to the L form, when the push pedal removes along the road surface, can shovel the rubble in the push pedal, can collect the rubble when promoting the rubble, prevents that it from staying the walking that ground influences the frame, is convenient for improve the cleanliness on road surface.
The utility model discloses further set up to: the push plate is vertically provided with baffles along two sides of the walking direction of the rack, and the bottom end of each baffle is fixedly connected with the upper surface of the push plate.
Through adopting above-mentioned technical scheme, when being more at any time in the push pedal, the rubble probably drops to ground by the both ends of push pedal, and the effect of interception can be played in setting up of baffle, reduces the rubble and falls to the possibility on ground by the push pedal, and the reinforcing is to the collection effect of rubble, improves the convenience of using the push pedal.
The utility model discloses further set up to: the push plate and the rack are fixedly connected in a detachable mode, a fixing bolt is arranged on the push plate, and one end of the fixing bolt penetrates through the push plate and is in threaded connection with the rack.
By adopting the technical scheme, when the rack moves, the lower surface of the push plate continuously generates friction with the road surface, and when the push plate is worn and needs to be replaced after long-term use, the fixing bolt can be unscrewed and the end part of the fixing bolt is separated from the side wall of the rack, so that the push plate can be detached from one end of the rack; when a new push plate needs to be installed, the fixing bolt is screwed down; can dismantle fixed connection and be convenient for change the push pedal, improve the convenience of using the push pedal.
The utility model discloses further set up to: be provided with the dust absorption subassembly between push pedal and the dust removal brush, the dust absorption subassembly is including setting up the suction box in the frame, and one side of suction box is connected with the device that induced drafts, and the opposite side intercommunication has the dust absorption pipe, and the one end that the device that induced drafts was kept away from to the dust absorption pipe is provided with the suction hood of opening down.
Through adopting above-mentioned technical scheme, the dust removal brush is when removing, constantly sweeps away the fine sand and the dust of sculpture device front end for fine sand and dust move to the one side of keeping away from the sculpture device gradually, and increase gradually, at this moment, can drive fine sand and dust by the device that induced drafts and be inhaled to the dust absorption pipe by the dust absorption cover, are inhaled to the suction box in by the dust absorption pipe again, thereby realize the cleaing away of fine sand and dust, improve the cleanliness on road surface, reduce the wearing and tearing to the sculpture sword.
The utility model discloses further set up to: the dust hood is in a splayed shape from top to bottom.
Through adopting above-mentioned technical scheme, the suction hood is the flaring form from top to bottom, can enlarge fine sand and dust and get into the space of dust absorption pipe to be convenient for once only inhale more fine sand and dust, reinforcing dust absorption assembly's dust absorption effect.
The utility model discloses further set up to: the dust removal brush comprises a fixed plate, a connecting plate and a brush, the fixed plate is fixed to the bottom of the rack, a sliding groove is horizontally formed in the lower surface of the fixed plate, a sliding block is arranged in the sliding groove and fixedly connected with the upper surface of the connecting plate, the brush is fixed to the lower surface of the connecting plate, and a locking piece is arranged between the sliding block and the fixed plate.
By adopting the technical scheme, after the cleaning brush is used for a long time, one end of the cleaning brush, which is in contact with the ground, is dirty, the locking part can be removed at the moment to release the fixation of the sliding block, and then the sliding block is slid along the length direction of the sliding groove, so that the brush can be detached from the fixed plate, and the brush can be cleaned or replaced conveniently; when a new brush needs to be installed, the sliding block slides into the sliding groove, and then the locking piece is installed; the connecting plate is convenient to detach or clean the brush, so that the convenience of using the dust removing brush is improved.
The utility model discloses further set up to: the locking piece comprises a locking bolt, and the locking bolt penetrates through the fixing plate and is in threaded connection with the sliding block.
By adopting the technical scheme, when the hairbrush needs to be detached, the locking bolt is unscrewed, the end part of the locking bolt is separated from the sliding block, and the sliding block is pushed along the length direction of the sliding groove, so that the hairbrush can be taken out; when the hairbrush needs to be installed, the locking bolt is screwed down, so that the end part of the locking bolt penetrates through the fixed plate to be in threaded connection with the sliding block, and the hairbrush can be fixed on the fixed plate; the locking bolt is simple in structure and principle and convenient to operate and use.
The utility model discloses further set up to: the cleaning assembly comprises a collecting box fixed on the rack, one side of the collecting box is connected with a suction fan, the other side of the collecting box is communicated with a suction pipe, one end, away from the suction fan, of the suction pipe is provided with a suction hood, and the suction hood faces the pattern carving device.
Through adopting above-mentioned technical scheme, the piece that the sculpture device produced at the sculpture in-process can be inhaled to the aspiration channel by the suction fan in, inhale to the collecting box by the aspiration channel again in to the realization reduces the piece and stays the possibility to the road surface to clastic clearance process, improves the cleanliness on road surface.
To sum up, the utility model discloses a beneficial technological effect does:
1. the push plate can push away the broken stone, so that the abrasion of the broken stone to the engraving knife is reduced; the dust removal brush can sweep fine sand on the road surface, the cleanliness of the road surface is improved, the obstacles are swept away for the engraving device, the abrasion to the engraving knife is further reduced, and the service life of the engraving knife is prolonged;
2. the push plate is L-shaped, and the two ends of the push plate are vertically provided with the baffles, so that the broken stones can be collected on the upper surface of the push plate when the push plate moves, the broken stones can be cleaned while being pushed, the broken stones are prevented from being left on the ground to influence the walking of the rack, and the cleanness of the road surface is convenient to improve;
3. the dust collection assembly can be used for removing fine sand and dust, the cleanliness of the road surface is improved, and abrasion to the graver is reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;
fig. 3 is a side view of the present invention.
In the figure, 1, a frame; 11. a push rod; 12. a roller; 2. a carving device; 21. engraving a shaft; 211. a belt pulley; 2111. a belt; 212. a motor; 22. a carving knife; 3. pushing the plate; 31. a baffle plate; 32. fixing the bolt; 4. a dust removal brush; 41. a fixing plate; 411. a chute; 42. a connecting plate; 421. a slider; 43. a brush; 5. a dust collection assembly; 51. a dust collection box; 52. a dust collection pipe; 521. a dust hood; 53. a dust collector; 6. cleaning the assembly; 61. a collection box; 62. an air suction pipe; 621. an air suction hood; 63. a suction fan.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a road router with piece cleaning device, including frame 1, the one end of frame 1 is provided with push rod 11, and the bottom is provided with sculpture device 2, and the one end that push rod 11 was kept away from in frame 1 is provided with push pedal 3, is provided with dust removal brush 4 between push pedal 3 and the sculpture device 2, is provided with dust absorption assembly 5 between dust removal brush 4 and the push pedal 3, and one side that dust removal brush 4 was kept away from to sculpture device 2 is provided with clearance subassembly 6.
Referring to fig. 1, a frame 1 is a horizontally arranged plate-shaped structure, four rollers 12 are rotatably connected to the bottom end of the frame, a push rod 11 is vertically arranged at one end of the top end of the frame, the push rod 11 is a door-shaped rod-shaped structure, and the bottom end of the frame is fixedly connected with the top end of the frame 1. Referring to fig. 2, the bottom of the frame 1 is provided with a carving device 2.
The engraving device 2 comprises an engraving shaft 21 and a plurality of engraving knives 22. The axis of the carving shaft 21 is vertical to the walking direction of the frame 1, and two ends of the carving shaft are rotatably connected with the bottom of the frame 1. The engraving knives 22 are sleeved on the outer wall of the engraving shaft 21 and fixedly connected with the engraving shaft 21, and the plurality of engraving knives 22 are uniformly distributed along the axial direction of the engraving shaft 21.
Referring back to fig. 1, the engraved shaft 21 is rotated by a motor 212, and the motor 212 is fixed to the top end of the frame 1. The output shaft of the motor 212 is parallel to the axis of the engraved shaft 21, one end of the engraved shaft 21 and the output shaft of the motor 212 is provided with a belt 2111 wheel 211, a belt 2111 is arranged between the two belt 2111 wheels 211, and the rotation of the output shaft of the motor 212 can drive the belt 2111 to transmit.
When the road surface needs to be engraved, the motor 212 drives the belt 2111 wheel 211 to rotate, then drives the belt 2111 to transmit, further drives the engraving shaft 21 and the engraving knife 22 to rotate, then pushes the push rod 11, so that the roller 12 rolls along the road surface, drives the rack 1 and the engraving device 2 to travel, and the engraving knife 22 can perform engraving on the road surface.
Referring to fig. 1, one end of the frame 1, which is far away from the push rod 11, is provided with an L-shaped push plate 3, the push plate 3 is horizontally arranged, the lower surface of the push plate 3 extends in the direction far away from the push rod 11, and the lower surface is flush with the road surface. A plurality of fixing bolts 32 are arranged between the push plate 3 and the frame 1, and one ends of the fixing bolts 32 penetrate through the push plate 3 and are in threaded connection with the frame 1, so that the push plate 3 is temporarily fixed on the frame 1. Baffle plates 31 are vertically arranged on two sides of the push plate 3 along the walking direction of the rack 1, and the bottom ends of the baffle plates 31 are fixedly connected with the upper surface of the push plate 3.
Frame 1 is at the walking in-process, and the lower surface of push pedal 3 will constantly rub with the road surface, and when there was the rubble in the road surface, push pedal 3 can shovel the rubble to between push pedal 3 and the baffle 31 to the rubble on clearance road surface improves the cleanliness on road surface, reduces the rubble simultaneously and to the wearing and tearing of nicking sword 22.
Referring to fig. 2, a dust removing brush 4 is disposed between the push plate 3 and the engraving device 2, and the dust removing brush 4 includes a fixing plate 41, a connecting plate 42, and a brush 43. The fixing plate 41 is horizontally disposed, and the upper surface thereof is fixedly connected to the frame 1. The connecting plate 42 is connected with the fixed plate 41 in a sliding manner, a T-shaped sliding groove 411 is horizontally formed in the lower surface of the fixed plate 41, a sliding block 421 is arranged in the sliding groove 411, and the sliding block 421 is fixedly connected with the connecting plate 42.
Referring to fig. 2, a locking bolt is disposed between the sliding block 421 and the fixing plate 41, and one end of the locking bolt passes through the fixing plate 41 and is threadedly coupled to the sliding block 421, thereby temporarily fixing the sliding block 421 in the sliding slot 411. The top end of the brush 43 is fixedly connected with the connecting plate 42, and the bottom end is contacted with the road surface.
Frame 1 is at the walking in-process, and the bottom of brush 43 will constantly with the road surface contact for the fine sand and the dust on road surface remove to the direction of keeping away from sculpture device 2, improve the cleanliness on the road surface below sculpture device 2, the sculpture device 2 of being convenient for carries out the sculpture.
Referring to fig. 3, a dust suction assembly 5 is provided between the dust removing brush 4 and the push plate 3. The dust suction assembly 5 includes a dust suction box 51, a dust suction pipe 52, and a dust suction machine 53. The dust suction box 51 and the dust suction machine 53 are both fixed on the frame 1, the air suction inlet of the dust suction machine 53 is communicated with the dust suction pipe 52, and the air outlet is communicated with the dust suction box 51. The end of the dust suction pipe 52 far away from the dust collector 53 penetrates through the frame 1 and is connected with a dust suction cover 521. The dust hood 521 is a horizontally disposed hood body with a downward opening, and has a cross section in a flared shape from top to bottom.
The dust removing brush 4 can collect fine sand and dust on the road surface after sweeping the fine sand and dust off the road surface by the dust collecting component 5. The dust collector 53 drives the fine sand and dust to be sucked to the dust suction pipe 52, and then the fine sand and dust are sucked to the dust suction box 51 through the dust suction pipe 52, so that the fine sand and dust can be removed, the cleanness of the road surface is improved, and the abrasion of the graver 22 is reduced.
Referring to fig. 3, a cleaning assembly 6 is arranged on one side of the engraving device 2 far away from the dust removing brush 4, and the cleaning assembly 6 comprises a collection box 61, an air suction pipe 62 and an air suction pipe 62. The cleaning box and the suction fan 63 are fixed on the frame 1, the suction inlet of the suction fan 63 is communicated with the suction pipe 62, and the air outlet is communicated with the cleaning box. The end of the air suction pipe 62 far away from the air suction fan 63 penetrates through the frame 1 and is connected with an air suction cover 621. The air suction cover 621 is a cover body which is horizontally arranged and has a downward opening, and the cross section of the air suction cover is flared from top to bottom.
The sculpture device 2 will produce certain piece at the sculpture in-process, and the piece will throw away and drop to the road surface along sculpture device 2 pivoted direction, and at this moment, can be inhaled to aspiration channel 62 through suction hood 621 by the piece on suction fan 63 drive road surface in, is inhaled to collecting box 61 by aspiration channel 62 again to reduce the piece and fall to the possibility on ground, the cleanliness on road surface when guaranteeing the sculpture.
The implementation principle of the embodiment is as follows:
when the road surface needs to be engraved, the motor 212 drives the engraving shaft 21 and the engraving knife 22 to rotate, and then the worker pushes the push rod 11, so that the roller 12 continuously travels along the road surface, and the road surface engraving operation is realized; the frame 1 moves along with the push plate 3 and the dust removing brush 4 in the walking process, when broken stones exist on the road surface, the push plate 3 can shovel the broken stones to a position between the push plate 3 and the baffle 31, so that the broken stones on the road surface are collected, and the abrasion of the broken stones on the carving knife 22 is reduced; the dust removing brush 4 can sweep fine sand and dust on the road surface, and the dust collector 53 drives the fine sand to be sucked into the dust suction box 51 at any time, so that the fine sand and dust on the road surface are collected, obstacles are swept for the engraving device 2, the abrasion to the engraving knife 22 is further reduced, and the service life of the engraving knife 22 is prolonged; the scraps generated by the carving knife 22 in the carving process can be sucked into the collecting box 61 by the suction fan 63, so that the possibility that the scraps are left on the ground is reduced, and the cleanliness of the road surface is improved.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (9)

1. The utility model provides a road router with piece cleaning device, which comprises a frame (1), the one end department of frame (1) is provided with push rod (11), the bottom of frame (1) is provided with a plurality of gyro wheels (12), the bottom of frame (1) is provided with sculpture device (2), sculpture device (2) are including rotating sculpture axle (21) of connecting and the sculpture sword (22) of locating sculpture axle (21) outer wall in frame (1) with the cover, sculpture axle (21) are connected with drive sculpture axle (21) pivoted driving piece, one side that sculpture device (2) are close to push rod (11) is provided with and is used for clearing up clastic clearance subassembly (6), its characterized in that: the road surface dust removing machine is characterized in that a push plate (3) is horizontally arranged at one end, far away from the push rod (11), of the machine frame (1), the bottom end of the push plate (3) is flush with the road surface, a dust removing brush (4) is horizontally arranged between the push plate (3) and the carving device (2), the top end of the dust removing brush (4) is fixedly connected with the bottom of the machine frame (1), and the bottom end of the dust removing brush is in contact with the road surface.
2. A router with a debris removal device according to claim 1, characterised in that: the push plate (3) is L-shaped, and the bottom end of the push plate (3) extends in the direction away from the rack (1).
3. A router with a debris removal device according to claim 2, characterised in that: baffle plates (31) are vertically arranged on two sides of the push plate (3) along the walking direction of the rack (1), and the bottom ends of the baffle plates (31) are fixedly connected with the upper surface of the push plate (3).
4. A router with a debris removal device according to claim 3, characterised in that: the push plate (3) is detachably and fixedly connected with the rack (1), a fixing bolt (32) is arranged on the push plate (3), and one end of the fixing bolt (32) penetrates through the push plate (3) and is in threaded connection with the rack (1).
5. A router with a debris removal device according to claim 1, characterised in that: be provided with dust absorption subassembly (5) between push pedal (3) and dust removal brush (4), dust absorption subassembly (5) are connected with the device that induced drafts including setting up dust box (51) on frame (1) in one side of dust box (51), and the opposite side intercommunication has dust absorption pipe (52), and the one end that the device that induced drafts is kept away from in dust absorption pipe (52) is provided with dust hood (521) that the opening is down.
6. A router with a debris removal device according to claim 5, characterised in that: the dust hood (521) is in a splayed shape from top to bottom.
7. A router with a debris removal device according to claim 1, characterised in that: dust removal brush (4) are including fixed plate (41), connecting plate (42) and brush (43), and fixed plate (41) are fixed in the bottom of frame (1), and spout (411) have been seted up to the lower surface level of fixed plate (41), are provided with slider (421) in spout (411), and the upper surface fixed connection of slider (421) and connecting plate (42), and brush (43) are fixed in the lower surface of connecting plate (42), are provided with the retaining member between slider (421) and fixed plate (41).
8. A router with a debris removal device according to claim 7, characterised in that: the locking piece comprises a locking bolt, and the locking bolt penetrates through the fixing plate (41) and is in threaded connection with the sliding block (421).
9. A router with a debris removal device according to claim 1, characterised in that: clearance subassembly (6) are connected with suction fan (63) including being fixed in collecting box (61) on frame (1) one side of collecting box (61), and the opposite side intercommunication has aspiration channel (62), and the one end that aspiration channel (62) kept away from suction fan (63) is provided with aspiration channel cover (621), and aspiration channel cover (621) are towards sculpture device (2).
CN201920821996.0U 2019-06-01 2019-06-01 Road router with piece cleaning device Expired - Fee Related CN210561633U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920821996.0U CN210561633U (en) 2019-06-01 2019-06-01 Road router with piece cleaning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920821996.0U CN210561633U (en) 2019-06-01 2019-06-01 Road router with piece cleaning device

Publications (1)

Publication Number Publication Date
CN210561633U true CN210561633U (en) 2020-05-19

Family

ID=70635538

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920821996.0U Expired - Fee Related CN210561633U (en) 2019-06-01 2019-06-01 Road router with piece cleaning device

Country Status (1)

Country Link
CN (1) CN210561633U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112609549A (en) * 2020-12-11 2021-04-06 魏化冰 Terrace embossing device capable of embossing various road shapes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112609549A (en) * 2020-12-11 2021-04-06 魏化冰 Terrace embossing device capable of embossing various road shapes

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GR01 Patent grant
GR01 Patent grant
CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: No.99 Dagu North Road, Xiaobailou street, Heping District, Tianjin

Patentee after: Zhongnengjian road and Bridge Engineering Co.,Ltd.

Address before: 300381 Building 5, Olympic Village, Hongqi South Road, Nankai District, Tianjin

Patentee before: TIANJIN URBAN CONSTRUCTION ROAD AND BRIDGE ENGINEERING Co.,Ltd.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20200519

Termination date: 20210601