CN220847018U - Pavement crack repairing and maintaining device - Google Patents
Pavement crack repairing and maintaining device Download PDFInfo
- Publication number
- CN220847018U CN220847018U CN202322499790.XU CN202322499790U CN220847018U CN 220847018 U CN220847018 U CN 220847018U CN 202322499790 U CN202322499790 U CN 202322499790U CN 220847018 U CN220847018 U CN 220847018U
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- lifting
- protection
- repairing
- fixedly connected
- motor
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- 230000004224 protection Effects 0.000 claims abstract description 70
- 238000004140 cleaning Methods 0.000 claims abstract description 32
- 239000000428 dust Substances 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 244000007853 Sarothamnus scoparius Species 0.000 claims abstract description 13
- 230000008439 repair process Effects 0.000 claims description 39
- 230000005540 biological transmission Effects 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 10
- 238000012423 maintenance Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 5
- 239000004575 stone Substances 0.000 description 9
- 230000001681 protective effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- 230000008263 repair mechanism Effects 0.000 description 5
- 238000003825 pressing Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009979 protective mechanism Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- 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
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Road Repair (AREA)
Abstract
The utility model discloses a pavement crack repairing and maintaining device which comprises a crack repairing mechanism, a first lifting motor and a second lifting motor, wherein the first lifting motor and the second lifting motor are arranged in the crack repairing mechanism, one side of the crack repairing mechanism is provided with a protection mechanism, the top of the protection mechanism is provided with a third lifting motor, the crack repairing mechanism comprises a repairing vehicle, a motor protection cover is fixedly arranged on one side of the top of the repairing vehicle, the first lifting motor is fixedly arranged on one side of the inner part of the motor protection cover, the output end of the first lifting motor is fixedly connected with a lifting driving chain wheel, the outer side of the lifting driving chain wheel is in meshed connection with a driving chain, the pavement can be cleaned by using a cleaning broom through the crack repairing mechanism, dust can be absorbed by using a dust collector and a dust hood, meanwhile, a repairing liquid is sprayed on the crack of the pavement through a repairing nozzle, and the crack is smoothed through a pavement roller, so that the flatness of the repaired pavement is ensured.
Description
Technical Field
The utility model relates to the technical field of repairing devices, in particular to a pavement crack repairing and maintaining device.
Background
The four seasons in north are obvious, changes in temperature alternate, and the ground can stretch under the effect of hot weather in summer, can shrink under the effect of cold weather in winter, and the effect of the change stretch and shrink of a cold and a hot directly can influence the road that goes out to take place gap defect, and some cracks need to be cut out certain width along its formation direction to fill, increase the stability after filling.
Publication number CN 219385960U discloses a pavement crack repairing device, dry and roll extrusion to pouring the seam back department, then start driving motor and air feed piece, driving motor drives shunt tubes and roll extrusion roller through driving disk and rotates, air feed piece supplies air to shunt tubes, the wind is sprayed out through the spray tube and is acted on filling department, increase the drying rate, simultaneously at the roll extrusion of roll extrusion roller, increase roughness and compactness, but start driving motor reversal to drive the scraper bowl and get rid of the convex part of filling department, increase the planarization after filling, but this patent still has following problem in the in-service use process:
This pavement crack repair device does not set up relevant clean mechanism and clears up the dust on road surface, leads to road surface and crack department to have certain dust, when carrying out pavement crack repair, because crack department has the dust to exist, easily appear the circumstances of fracture after leading to crack repair to influence pavement repair's quality, simultaneously, can have some bulky stones or barriers on the road surface, when carrying out pavement crack repair, makes stones and spray tube or roll extrusion roller collide very easily, thereby causes pavement crack repair device to damage the condition, influences pavement repair's efficiency.
A pavement crack repairing and maintaining device is proposed so as to solve the problems set forth above.
Disclosure of utility model
The utility model aims to provide a pavement crack repairing and maintaining device, which aims to solve the problems that the pavement crack repairing device provided by the background art is not provided with a related cleaning mechanism to clean dust on a pavement, so that certain dust exists on the pavement and cracks, and when the pavement crack is repaired, the cracks are easy to crack after the crack is repaired due to the existence of the dust on the cracks, so that the quality of pavement repair is affected, meanwhile, a plurality of large-volume stones or barriers exist on the pavement, and when the pavement crack is repaired, the stones are easy to collide with spray pipes or rolling rollers, so that the pavement crack repairing device is damaged, and the pavement repairing efficiency is affected.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a pavement crack repairing and maintaining device comprises a crack repairing mechanism, a first lifting motor and a second lifting motor, wherein the first lifting motor and the second lifting motor are arranged in the crack repairing mechanism;
a protection mechanism is arranged on one side of the crack repairing mechanism, and a third lifting motor is arranged at the top of the protection mechanism;
Further comprises:
the crack repairing mechanism comprises a repairing vehicle, a motor protecting cover is fixedly arranged on one side of the top of the repairing vehicle, and the first lifting motor is fixedly arranged on one side of the inner part of the motor protecting cover;
The output end of the first lifting motor is fixedly connected with a lifting driving sprocket, and the outer side of the lifting driving sprocket is connected with a transmission chain in a meshed manner;
Wherein, one side of the inside of the transmission chain far away from the lifting driving sprocket is connected with a lifting driven sprocket in a meshed manner.
Preferably, the bottom of lift driving sprocket and lift driven sprocket is all fixedly connected with first lift threaded rod, the middle part threaded connection of first lift threaded rod has first lift thread bush, two fixedly connected with lift link between the first lift thread bush, the top fixed mounting of lift link has clean motor, clean rotation gear of output fixedly connected with of clean motor.
Preferably, one side of the cleaning rotating gear is connected with a cleaning meshing gear in a meshing manner, the bottoms of the cleaning rotating gear and the cleaning meshing gear are fixedly connected with a cleaning broom, one side of the lifting connecting frame is fixedly provided with a dust collector, and the bottom of the dust collector is fixedly connected with a dust hood.
Preferably, the second lifting motor is fixedly arranged on one side of the interior of the repairing vehicle, the output end of the second lifting motor is fixedly connected with a lifting transmission assembly, a second lifting threaded rod is symmetrically arranged on two sides of the bottom of the lifting transmission assembly, a second lifting threaded sleeve is connected with the middle thread of the second lifting threaded rod in a threaded manner, a first connecting rod is fixedly connected with the bottom of the second lifting threaded sleeve, a repairing support is fixedly connected between the two first connecting rods, and a plurality of repairing spray heads are fixedly arranged at the bottom of the repairing support.
Preferably, the top fixedly connected with connecting pipe of repairing support, the top fixedly connected with storage box of connecting pipe, the inboard sliding connection in top of head rod has the lift slider, the top fixedly connected with buffer spring of lift slider, one side fixedly connected with second connecting rod of lift slider, two it is connected with the roller to rotate between the second connecting rod.
Preferably, the protection mechanism comprises a protection lifting frame, a third lifting motor is fixedly arranged at the top of the protection lifting frame, the output end of the third lifting motor is fixedly connected with a protection threaded rod, the middle thread of the protection threaded rod is connected with a protection threaded sleeve, the outer side of the protection threaded sleeve is fixedly provided with a protection plate, a rotation support is symmetrically arranged on one side of the top of the protection plate, a protection shovel is rotationally connected to one side of the rotation support, and a telescopic pump is symmetrically arranged in the middle of the protection shovel.
Preferably, the telescopic pump is rotationally connected with the protection plate, the protection plate is in sliding connection with the protection lifting frame, the protection lifting frame is fixedly arranged on one side of the top of the repair vehicle, and the protection threaded rod is rotationally connected with the repair vehicle.
Compared with the prior art, the utility model has the beneficial effects that: this maintenance device is repaired to road surface crack not only can utilize the realization clean broom to clean the road surface through setting up crack repairing mechanism to utilize dust catcher and dust hood to absorb the dust, utilize the repair shower nozzle to spray the repair liquid simultaneously, repair the crack on road surface, can block the great stone of volume on the road surface through setting up protection machanism, its concrete content is as follows:
1. The road surface can be cleaned by the aid of the cleaning broom through the arrangement of the crack repairing mechanism, dust is absorbed by the aid of the dust collector and the dust hood, meanwhile, cracks of the road surface are repaired by spraying the repairing liquid through the repairing spray heads, the cracks are smoothed by the aid of the arrangement of the road pressing rollers, accordingly, the road surface after repairing is smooth, the second connecting rod and the road pressing rollers are driven to slide in the first connecting rod by the aid of the buffer springs, the distance between the repairing spray heads and the cracks can be adjusted, and vibration reduction protection is conducted on the road pressing rollers;
2. the stone with larger volume on the road surface can be blocked by the aid of the protective mechanism, the stone is prevented from entering the bottom of the repair vehicle, the cleaning broom or the dust collector is damaged, the height of the protective shovel can be adjusted by the aid of the third lifting motor, and meanwhile the angle of the protective shovel can be adjusted by the aid of the telescopic pump, so that the road surface inclined by the aid of the telescopic pump is adapted.
Drawings
FIG. 1 is a schematic view of the overall three-dimensional structure of the present utility model;
FIG. 2 is a schematic view of a three-dimensional structure of a crack repairing mechanism according to the present utility model;
FIG. 3 is a schematic view of a three-dimensional structure of a cleaning broom according to the present utility model;
FIG. 4 is a schematic diagram of a three-dimensional structure of a repair shower head according to the present utility model;
FIG. 5 is a schematic view of a three-dimensional structure of a roller according to the present utility model;
fig. 6 is a schematic three-dimensional structure of the protection mechanism in the present utility model.
In the figure: 1. a crack repairing mechanism; 101. repairing the vehicle; 102. a motor protection cover; 103. a first lifting motor; 104. lifting the driving sprocket; 105. a drive chain; 106. lifting the driven sprocket; 107. a first lifting threaded rod; 108. a first lifting thread sleeve; 109. lifting the connecting frame; 110. cleaning a motor; 111. cleaning the rotating gear; 112. cleaning the meshing gear; 113. cleaning a broom; 114. a dust collector; 115. a dust hood; 116. a second lifting motor; 117. a lifting transmission assembly; 118. the second lifting threaded rod; 119. the second lifting thread sleeve; 120. a first connecting rod; 121. repairing the bracket; 122. repairing the spray head; 123. a connecting pipe; 124. a storage bin; 125. a lifting slide block; 126. a buffer spring; 127. a second connecting rod; 128. a roller; 2. a protective mechanism; 201. a protective lifting frame; 202. a third lifting motor; 203. a protective threaded rod; 204. a protective thread sleeve; 205. a protection plate; 206. rotating the support; 207. a protective shovel; 208. a telescopic pump.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-6, the present utility model provides the following technical solutions: the utility model provides a road surface crack repair maintenance device, including crack repair mechanism 1, and install in the inside first lift motor 103 and the second lift motor 116 of crack repair mechanism 1, one side of crack repair mechanism 1 is provided with protection mechanism 2, and the top of protection mechanism 2 is provided with third lift motor 202, crack repair mechanism 1 includes repair car 101, repair car 101's top side fixed mounting has motor protection cover 102, first lift motor 103 fixed mounting is in motor protection cover 102's inside one side, wherein, the output fixedly connected with lift driving sprocket 104 of first lift motor 103, the outside meshing of lift driving sprocket 104 is connected with drive chain 105, wherein, one side meshing that the inside of drive chain 105 kept away from lift driving sprocket 104 is connected with lift driven sprocket 106, lift driving sprocket 104 and lift driven sprocket 106's bottom all fixedly connected with first lift threaded rod 107, the middle part of the first lifting threaded rod 107 is connected with a first lifting threaded sleeve 108 in a threaded manner, a lifting connecting frame 109 is fixedly connected between the two first lifting threaded sleeves 108, a cleaning motor 110 is fixedly arranged at the top of the lifting connecting frame 109, a cleaning rotating gear 111 is fixedly connected with the output end of the cleaning motor 110, one side of the cleaning rotating gear 111 is connected with a cleaning meshing gear 112 in a meshing manner, the bottoms of the cleaning rotating gear 111 and the cleaning meshing gear 112 are fixedly connected with a cleaning broom 113, a dust collector 114 is fixedly arranged at one side of the lifting connecting frame 109, a dust hood 115 is fixedly connected at the bottom of the dust collector 114, a second lifting motor 116 is fixedly arranged at one side of the inside of the repairing vehicle 101, a lifting transmission assembly 117 is fixedly connected at the output end of the second lifting motor 116, a second lifting threaded rod 118 is symmetrically arranged at the two sides of the bottom of the lifting transmission assembly 117, the middle part threaded connection of second lift threaded rod 118 has second lift threaded sleeve 119, the bottom fixedly connected with head rod 120 of second lift threaded sleeve 119, fixedly connected with repair support 121 between two head rods 120, repair support 121's bottom fixed mounting has a plurality of repair shower nozzles 122, repair support 121's top fixedly connected with connecting pipe 123, connecting pipe 123's top fixedly connected with storage box 124, the inboard sliding connection in top of head rod 120 has lift slider 125, lift slider 125's top fixedly connected with buffer spring 126, lift slider 125's one side fixedly connected with second connecting rod 127, rotate between two second connecting rods 127 and be connected with roller 128, can utilize to realize cleaning broom 113 to clean the road surface through setting up crack repair mechanism 1, and utilize dust catcher 114 and dust hood 115 to absorb the dust, utilize repair shower nozzle 122 to spray repair liquid simultaneously, repair the crack on the road surface, smooth the crack of road surface through setting up roller 128, thereby guarantee the leveling of back road surface.
The protection mechanism 2 comprises a protection lifting frame 201, a third lifting motor 202 is fixedly arranged at the top of the protection lifting frame 201, the output end of the third lifting motor 202 is fixedly connected with a protection threaded rod 203, the middle thread of the protection threaded rod 203 is connected with a protection threaded sleeve 204, the outer side of the protection threaded sleeve 204 is fixedly provided with a protection plate 205, a rotation support 206 is symmetrically arranged at one side of the top of the protection plate 205, one side of the rotation support 206 is rotationally connected with a protection shovel 207, a telescopic pump 208 is symmetrically arranged at the middle of the protection shovel 207, the telescopic pump 208 is rotationally connected with the protection plate 205, the protection plate 205 is slidingly connected with the protection lifting frame 201, the protection lifting frame 201 is fixedly arranged at one side of the top of the repair vehicle 101, the protection threaded rod 203 is rotationally connected with the repair vehicle 101, a large stone on a road surface can be blocked by arranging the protection mechanism 2, the stone is prevented from entering the bottom of the repair vehicle 101, the cleaning broom 113 or the dust collector 114 is damaged, the height of the protection shovel 207 can be adjusted by the aid of the telescopic pump 208, and the inclined road surface can be adjusted by the telescopic pump 208.
Working principle: before the device for repairing and maintaining the pavement cracks is used, the whole situation of the device is required to be checked firstly, normal work can be carried out, as shown in fig. 1-6, pavement repairing liquid is poured into the storage box 124, the repairing vehicle 101 is moved to the pavement cracks, the third lifting motor 202 is started to drive the protection threaded rod 203 to rotate, the protection threaded sleeve 204 drives the protection plate 205 to move up and down, the distance between the protection shovel 207 and the ground is adjusted, meanwhile, the telescopic pump 208 is started to adjust the angle of the protection shovel 207, when the pavement cracks are repaired, obstacles on the pavement are clear, damage of the crack repairing mechanism 1 is avoided, secondly, the first lifting motor 103 is started to drive the lifting driving sprocket 104 and the driving chain 105 to rotate, the first lifting threaded rod 107 is driven to move the lifting connecting frame 109 by utilizing the meshing effect between the driving chain 105 and the lifting driven sprocket 106, the cleaning broom 113 is driven to move to the pavement, the cleaning rotary gear 111 is driven to rotate by the starting motor 110, the meshing effect between the cleaning rotary gear 111 and the cleaning meshing gear 112 is achieved, and finally, the cleaning broom 113 is matched with the dust collector to clean the pavement cracks by means of the second lifting drive rod 122, and the lifting threaded rod 122 is driven to move up and down by the lifting threaded rod 106, and the lifting joint rod 122 is driven to repair the pavement to be repaired by the lifting and the lifting threaded rod assembly to be repaired, and the lifting joint rod is driven to move up and the lifting and the pavement to be driven to rotate.
Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.
Claims (7)
1. A pavement crack repairing and maintaining device comprises a crack repairing mechanism (1), and a first lifting motor (103) and a second lifting motor (116) which are arranged in the crack repairing mechanism (1);
A protection mechanism (2) is arranged on one side of the crack repairing mechanism (1), and a third lifting motor (202) is arranged at the top of the protection mechanism (2);
Characterized by further comprising:
The crack repairing mechanism (1) comprises a repairing vehicle (101), a motor protecting cover (102) is fixedly arranged on one side of the top of the repairing vehicle (101), and a first lifting motor (103) is fixedly arranged on one side of the inside of the motor protecting cover (102);
The output end of the first lifting motor (103) is fixedly connected with a lifting driving sprocket (104), and the outer side of the lifting driving sprocket (104) is connected with a transmission chain (105) in a meshed manner;
Wherein, one side of the inside of the transmission chain (105) far away from the lifting driving sprocket (104) is connected with a lifting driven sprocket (106) in a meshed way.
2. The pavement crack repair and maintenance device according to claim 1, wherein: the lifting drive sprocket (104) and the lifting driven sprocket (106) are fixedly connected with first lifting threaded rods (107), the middle threads of the first lifting threaded rods (107) are connected with first lifting threaded sleeves (108), lifting connecting frames (109) are fixedly connected between the first lifting threaded sleeves (108), cleaning motors (110) are fixedly arranged at the tops of the lifting connecting frames (109), and cleaning rotating gears (111) are fixedly connected with the output ends of the cleaning motors (110).
3. The pavement crack repair and maintenance device according to claim 2, wherein: one side meshing of clean rotation gear (111) is connected with clean meshing gear (112), the bottom of clean rotation gear (111) and clean meshing gear (112) is all fixedly connected with clean broom (113), one side fixed mounting of lift link (109) has dust catcher (114), the bottom fixedly connected with dust hood (115) of dust catcher (114).
4. A pavement crack repair and maintenance device according to claim 3, wherein: the second lifting motor (116) is fixedly arranged on one side of the inside of the repairing vehicle (101), the output end of the second lifting motor (116) is fixedly connected with a lifting transmission assembly (117), a second lifting threaded rod (118) is symmetrically arranged on two sides of the bottom of the lifting transmission assembly (117), a second lifting threaded sleeve (119) is connected with the middle of the second lifting threaded rod (118) in a threaded manner, a first connecting rod (120) is fixedly connected to the bottom of the second lifting threaded sleeve (119), a repairing support (121) is fixedly connected between the two first connecting rods (120), and a plurality of repairing spray heads (122) are fixedly arranged at the bottom of the repairing support (121).
5. The pavement crack repair and maintenance device according to claim 4, wherein: the utility model discloses a repair support, including repair support (121), connecting pipe (123) of top fixedly connected with, the top fixedly connected with storage case (124) of connecting pipe (123), the inboard sliding connection in top of head rod (120) has lift slider (125), the top fixedly connected with buffer spring (126) of lift slider (125), one side fixedly connected with second connecting rod (127) of lift slider (125), two rotate between second connecting rod (127) and be connected with roller (128).
6. The pavement crack repair and maintenance device according to claim 1, wherein: protection machanism (2) are including protection crane (201), third elevator motor (202) fixed mounting is at the top of protection crane (201), the output fixedly connected with protection threaded rod (203) of third elevator motor (202), the middle part threaded connection of protection threaded rod (203) has protection thread bush (204), the outside fixed mounting of protection thread bush (204) has guard plate (205), rotation support (206) are installed to the top one side symmetry of guard plate (205), one side rotation of rotation support (206) is connected with protection shovel (207), telescopic pump (208) are installed to the middle part symmetry of protection shovel (207).
7. The pavement crack repair and maintenance device according to claim 6, wherein: the telescopic pump (208) is rotationally connected with the protection plate (205), the protection plate (205) is in sliding connection with the protection lifting frame (201), the protection lifting frame (201) is fixedly installed on one side of the top of the repair vehicle (101), and the protection threaded rod (203) is rotationally connected with the repair vehicle (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322499790.XU CN220847018U (en) | 2023-09-14 | 2023-09-14 | Pavement crack repairing and maintaining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322499790.XU CN220847018U (en) | 2023-09-14 | 2023-09-14 | Pavement crack repairing and maintaining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220847018U true CN220847018U (en) | 2024-04-26 |
Family
ID=90744721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322499790.XU Active CN220847018U (en) | 2023-09-14 | 2023-09-14 | Pavement crack repairing and maintaining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220847018U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118326792A (en) * | 2024-05-15 | 2024-07-12 | 孙挺翼 | A road surface repair device for highway engineering |
| CN119243549A (en) * | 2024-11-19 | 2025-01-03 | 中国二十二冶集团有限公司 | Roadbed compaction device and roadbed compaction method |
| CN120401583A (en) * | 2025-07-01 | 2025-08-01 | 山西一建集团有限公司 | A leveling device for clearing obstacles based on source heat pump construction |
| CN120556355A (en) * | 2025-08-01 | 2025-08-29 | 山西工程科技职业大学 | Crack repair device for highway construction |
-
2023
- 2023-09-14 CN CN202322499790.XU patent/CN220847018U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118326792A (en) * | 2024-05-15 | 2024-07-12 | 孙挺翼 | A road surface repair device for highway engineering |
| CN119243549A (en) * | 2024-11-19 | 2025-01-03 | 中国二十二冶集团有限公司 | Roadbed compaction device and roadbed compaction method |
| CN120401583A (en) * | 2025-07-01 | 2025-08-01 | 山西一建集团有限公司 | A leveling device for clearing obstacles based on source heat pump construction |
| CN120556355A (en) * | 2025-08-01 | 2025-08-29 | 山西工程科技职业大学 | Crack repair device for highway construction |
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