CN112227141A - Asphalt stone mixing device for road construction - Google Patents
Asphalt stone mixing device for road construction Download PDFInfo
- Publication number
- CN112227141A CN112227141A CN202010982537.8A CN202010982537A CN112227141A CN 112227141 A CN112227141 A CN 112227141A CN 202010982537 A CN202010982537 A CN 202010982537A CN 112227141 A CN112227141 A CN 112227141A
- Authority
- CN
- China
- Prior art keywords
- wall
- road construction
- fixed
- asphalt
- construction according
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
-
- 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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
- E01C19/105—Mixing or coating by a combination of methods covered by E01C19/1018 - E01C19/104, excluding E01C19/1036
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Machines (AREA)
Abstract
The invention belongs to the technical field of road construction, and particularly relates to asphalt-stone mixing equipment for road construction, which comprises an installation bottom box and an installation plate, wherein a first support and a second support are respectively welded on two sides of the outer wall of the top of the installation plate, fixed concave ring plates forming an obtuse angle with the second supports are respectively welded on the two sides of the outer wall of the top of the installation plate, convex ring plates are arranged on the inner walls of the two fixed concave ring plates, the same mixing tank is welded on the inner wall of each convex ring plate, and the same installation box is welded on the opposite side of each fixed concave ring plate. According to the invention, the heating wires are matched with the mounting box and the heat-insulating plate, and the convex rods, the grooves and the strip-shaped grooves are matched, so that the heat exchange area is effectively increased, the mixing tank is effectively heated and heat-insulated, and the mixing of asphalt and stones is facilitated.
Description
Technical Field
The invention relates to the technical field of road construction, in particular to asphalt stone mixing equipment for road construction.
Background
The asphalt is a black-brown complex mixture composed of hydrocarbons with different molecular weights and nonmetal derivatives thereof, is a high-viscosity organic liquid which is in a liquid state, has a black surface and can be dissolved in carbon disulfide. Asphalt is a waterproof, moistureproof and anticorrosive organic cementing material. Natural bitumen is stored underground, and some forms a mineral layer or is accumulated on the surface of the crust. The asphalt is mainly used in the industries of paint, plastics, rubber and the like and pavement and the like. Asphalt pavement refers to various types of pavement that are made by incorporating into mineral materials a road asphalt material. The asphalt binder improves the capability of the paving aggregate to resist damage of traveling vehicles and natural factors to the pavement, and enables the pavement to be smooth, less in dust, impermeable and durable. Accordingly, asphalt pavement is one of the most widely used high-grade pavements in road construction.
Asphalt and stone mixing equipment is needed in the construction process of the asphalt pavement. For example, chinese patent application No. CN2018204632663 discloses an asphalt stone stirring device for road construction, which comprises a frame, a stone box arranged on the frame, and a mixing and stirring drum arranged on the inner side of the frame below the stone box; one side in the stone box is provided with a spiral lifting device, the spiral lifting device comprises a rotating shaft, a first spiral blade is arranged on the rotating shaft, and the lower part of the rotating shaft penetrates through the rack and the bottom of the stone box. However, the mixing drum in the above patent is fixedly arranged, and in the actual use process, the stirring mechanism is easy to have operation dead angles, so that asphalt adhered to the inner wall of the mixing drum is not easy to mix, and thus certain limitations exist.
Disclosure of Invention
Based on the technical problem that most of traditional asphalt stone mixing devices are simple in structure and single in mixing mode, so that the material mixing effect is poor, the invention provides asphalt stone mixing equipment for road construction.
The invention provides asphalt-stone mixing equipment for road construction, which comprises an installation bottom box and an installation plate, wherein a first support and a second support are respectively welded on two sides of the outer wall of the top of the installation plate, fixed concave ring plates which form an obtuse angle with the second supports are respectively welded on the two sides of the outer wall of the top of the installation plate, convex ring plates are arranged on the inner walls of the two fixed concave ring plates, the same mixing tank is welded on the inner wall of each convex ring plate, the same installation box is welded on one opposite side of the two fixed concave ring plates, a heat insulation plate is fixedly installed on the outer wall of the installation box, heating wires which are distributed in an annular shape at equal intervals are fixedly installed on one opposite sides of the two fixed concave ring plates, the same feeding hopper is welded on the top end of the first support, a auger rod is rotatably connected with one side of the feeding hopper through a bearing, the end part of the auger rod is connected with a servo motor through, and the middle end of the convex rod is provided with a strip-shaped groove, and the outer wall of the circumference of the mixing tank is provided with grooves which are distributed with the convex rod in a staggered way.
Preferably, fixed armed lever has all been welded in the bottom four corners of loading hopper, and the both sides of fixed armed lever fixed mounting respectively has triangle separation blade and fixed pin.
Preferably, one side of the circumferential outer wall of the auger rod is welded with deflector rods which are distributed in a staggered mode with the fixed stop rods.
Preferably, a driving mechanism is installed at an opposite side of the fixed concave ring plate to the mixing tank, and the driving mechanism includes a driving motor fixed to the fixed concave ring plate by a bolt.
Preferably, the output shaft of the driving motor is in keyed connection with a driving gear, and the circumferential outer wall of the mixing tank close to the top end is in keyed connection with a transmission gear ring meshed with the driving gear.
Preferably, the opposite sides of the fixed concave ring plate and the convex ring plate are both provided with annular grooves, and the inner walls corresponding to the two annular grooves are in rolling connection with balls distributed at equal intervals.
Preferably, the mounting panel is connected through the hinge with the relative one side of installation under casing one end, and the mounting panel all has the hydraulic stem through hinged joint with the relative both sides of the other end of installation under casing.
Preferably, the bottom end of the mixing tank is connected with a sealing cover through threads.
Preferably, the inner wall of the installation bottom box is fixed with a counterweight end block through bolts.
Preferably, the spiral strake is welded on the circumferential inner wall of the mixing tank.
The beneficial effects of the invention are as follows:
1. this asphalt stone mixing apparatus for road construction through the actuating mechanism who sets up, can utilize driving motor, drive gear, drives the blending tank through the transmission ring gear and rotates to overturn the material, be favorable to carrying out preliminary mixed operation.
2. This asphalt stone mixing apparatus for road construction, through heater strip cooperation mounting box, the heated board that sets up, nose bar, recess and the bar groove that the cooperation set up effectively improve heat transfer area, carry out effectual heating, heat preservation to the blending tank and handle, are favorable to making pitch and stone carry out hybrid processing.
3. This bituminous stone mixing apparatus for road construction through the servo motor who sets up, can drive the auger rod and rotate to play the transmission effect that makes progress to the material, the driving lever, triangle separation blade and the pin that the cooperation set up realize the further hybrid processing to the material, increase mixed effect.
4. The asphalt-gravel mixing equipment for road construction has the advantages that the angle of the mounting plate can be conveniently adjusted through the arranged hydraulic rod, so that the subsequent blanking operation is convenient to carry out; through being provided with the spiral strander board at the blending tank inner wall, can effectively improve the blending tank and to the drive effect of material to further improve the mixed effect of material.
The parts of the device not involved are the same as or can be implemented using prior art.
Drawings
FIG. 1 is a schematic view of the overall structure of an asphalt stone mixing apparatus for road construction according to the present invention;
FIG. 2 is a schematic view of a partial three-dimensional structure of a mixing tank of the asphalt stone mixing device for road construction according to the present invention;
fig. 3 is an enlarged schematic structural diagram of a point a in fig. 1 of the asphalt stone mixing device for road construction according to the present invention;
FIG. 4 is a schematic structural view of a driving mechanism of the asphalt stone mixing device for road construction according to the present invention;
fig. 5 is a schematic structural diagram of a half cross-section of a mixing tank in embodiment 2 of the asphalt stone mixing apparatus for road construction according to the present invention.
In the figure: the device comprises a mounting plate 1, a counterweight end block 2, a mounting bottom box 3, a hydraulic rod 4, a convex ring plate 5, a convex rod 6, a fixed arm rod 7, a driving motor 8, a driving gear 9, a first support bracket 10, a servo motor 11, a charging hopper 12, a transmission gear ring 13, a heating wire 14, a fixed concave ring plate 15, a triangular baffle plate 16, a auger rod 17, a baffle rod 18, a sealing cover 19, a strip-shaped groove 20, a mixing tank 21, a groove 22, a mounting box 23, a heat-insulating plate 24 and a spiral strand plate 25.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-4, an asphalt stone mixing device for road construction comprises an installation bottom box 3 and an installation plate 1, wherein a first support 10 and a second support are respectively welded on two sides of the outer wall of the top of the installation plate 1, a fixed concave ring plate 15 forming an obtuse angle with the second support is welded on each of the second supports, convex ring plates 5 are arranged on the inner walls of the two fixed concave ring plates 15, the same mixing tank 21 is welded on the inner wall of each convex ring plate 5, the same installation box 23 is welded on one opposite side of each of the two fixed concave ring plates 15, a heat insulation plate 24 is fixedly installed on the outer wall of each installation box 23, heating wires 14 distributed annularly at equal intervals are fixedly installed on one opposite side of each fixed concave ring plate 15, the same feeding hopper 12 is welded on the top end of the first support 10, a twisted screw rod 17 is rotatably connected to one side of the feeding hopper 12 through a bearing, and a, the one end welding that the circumference outer wall of blending tank 21 is close to mounting box 23 has the nose bar 6 that the equidistance distributes, and the middle-end of nose bar 6 all opens and has bar groove 20, and the circumference outer wall of blending tank 21 is opened has the recess 22 with 6 crisscross distributions of nose bar.
In the invention, four corners of the bottom end of the charging hopper 12 are welded with the fixed arm levers 7, and two sides of the fixed arm levers 7 are respectively and fixedly provided with a triangular baffle 16 and a fixed baffle lever 18.
Wherein, deflector rods which are distributed with the fixed stop rods 18 in a staggered way are welded on one side of the circumferential outer wall of the auger rod 17.
Wherein, a driving mechanism is installed at the opposite side of the fixed concave ring plate 15 and the mixing tank 21, and the driving mechanism comprises a driving motor 8 fixed on the fixed concave ring plate 15 through bolts.
Wherein, the output shaft of the driving motor 8 is keyed with a driving gear 9, and the circumference outer wall of the mixing tank 21 close to the top end is keyed with a transmission gear ring 13 engaged with the driving gear 9.
Wherein, the opposite sides of the fixed concave ring plate 15 and the convex ring plate 5 are provided with annular grooves, and the inner walls corresponding to the two annular grooves are connected with balls which are distributed equidistantly in a rolling way.
Wherein, the relative one side of mounting panel 1 and 3 one ends of installation under casing is connected through the hinge, and mounting panel 1 all has hydraulic stem 4 through hinged joint with the relative both sides of the other end of installation under casing 3.
Wherein, the bottom end of the mixing tank 21 is connected with a sealing cover 19 through screw threads.
Wherein, the inner wall of the installation bottom box 3 is fixed with a counterweight end block 2 through bolts.
When the invention is used: an operator adds materials into the mixing tank 21 through the charging hopper 12, after the materials are added, the operator controls the starting of the heating wire 14, and the convex rod 6, the groove 22 and the strip-shaped groove 20 are arranged in a matching manner, so that the heat exchange area of the mixing tank 21 is effectively increased, and the mixing tank 21 is effectively heated and insulated; meanwhile, an operator controls the starting of the driving motor 8, and drives the mixing tank 21 to rotate by using the driving gear 9 and the transmission gear ring 13, so that the materials are overturned and subjected to primary mixing treatment; meanwhile, an operator controls and starts the servo motor 11 to drive the auger rod 17 to rotate, so that the upward transmission effect on the materials is achieved, and the further mixing treatment on the materials is realized by matching the deflector rod, the triangular baffle 16 and the baffle rod 18, so that the mixing effect is improved; after the mixture is accomplished, the sealed lid 19 of rotatable taking off of operating personnel to hydraulic stem 4 is started in the control, makes blending tank 21 tend to vertically, and 11 reverse runs of control start servo motor, carries out down the transmission effect to the material through auger rod 17, thereby carries out quick ejection of compact and handles.
Example 2
Referring to fig. 5, the present embodiment further includes a spiral strander 25 welded to the circumferential inner wall of the mixing tank 21, as compared to embodiment 1.
When the invention is used: the utilization is provided with spiral strander 25 at blending tank 21 inner wall, effectively improves blending tank 21 to the drive effect of material to reach the purpose that further improves the material mixing effect.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The utility model provides a road construction is with pitch stone mixing apparatus, has including installation under casing (3) and mounting panel (1), the top outer wall both sides of mounting panel (1) have welded respectively support one (10) and support two, its characterized in that, the equal welding of support two has and is obtuse fixed concave ring board (15) with support two, and the inner wall of two fixed concave ring boards (15) is provided with convex ring board (5), the inner wall welding of convex ring board (5) has same blending tank (21), and the relative one side welding of two fixed concave ring boards (15) has same mounting box (23), the outer wall fixed mounting of mounting box (23) has heated board (24), and the relative one side fixed mounting of two fixed concave ring boards (15) has heater strip (14) that the equidistance annular distributes, the top welding of support one (10) has same loading hopper (12), and one side of loading hopper (12) is rotated through the bearing and is connected with auger rod (17), there is servo motor (11) at the tip of auger rod (17) through the coupling joint, the one end welding that the circumference outer wall of blending tank (21) is close to mounting box (23) has nose bar (6) that the equidistance distributes, and the middle-end of nose bar (6) all opens bar groove (20), the circumference outer wall of blending tank (21) is opened has recess (22) with crisscross distribution of nose bar (6).
2. The asphalt and stone mixing device for road construction according to claim 1, wherein the four corners of the bottom end of the loading hopper (12) are welded with the fixed arm rods (7), and the two sides of the fixed arm rods (7) are respectively fixedly provided with the triangular retaining pieces (16) and the fixed stop rods (18).
3. The asphalt and gravel mixing device for road construction according to claim 2, wherein deflector rods which are distributed in a staggered manner with the fixed stop rods (18) are welded on one side of the circumferential outer wall of the auger rod (17).
4. The asphalt stone mixing apparatus for road construction according to claim 1, wherein a driving mechanism is installed at the opposite side of the fixed collar plate (15) to the mixing tank (21), and the driving mechanism includes a driving motor (8) fixed to the fixed collar plate (15) by bolts.
5. The asphalt stone mixing device for road construction according to claim 4, wherein the output shaft of the driving motor (8) is keyed with a driving gear (9), and the circumferential outer wall of the mixing tank (21) near the top end is keyed with a transmission gear ring (13) engaged with the driving gear (9).
6. The asphalt stone mixing device for road construction according to claim 1, wherein the opposite sides of the fixed concave ring plate (15) and the convex ring plate (5) are provided with annular grooves, and the inner walls of the two annular grooves are connected with balls which are distributed at equal intervals in a rolling manner.
7. The asphalt-stone mixing device for road construction according to claim 1, wherein the mounting plate (1) is hinged to the opposite side of one end of the mounting bottom box (3), and the hydraulic rods (4) are hinged to both opposite sides of the other end of the mounting plate (1) and the mounting bottom box (3).
8. The asphalt stone mixing apparatus for road construction according to claim 1, wherein a sealing cap (19) is threadedly attached to a bottom end of the mixing tank (21).
9. The asphalt stone mixing apparatus for road construction according to claim 1, wherein the inner wall of the installation bottom box (3) is fixed with a weight end block (2) by bolts.
10. The asphalt stone mixing apparatus for road construction according to claim 1, wherein a spiral strake (25) is welded to the circumferential inner wall of the mixing tank (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010982537.8A CN112227141A (en) | 2020-09-17 | 2020-09-17 | Asphalt stone mixing device for road construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010982537.8A CN112227141A (en) | 2020-09-17 | 2020-09-17 | Asphalt stone mixing device for road construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112227141A true CN112227141A (en) | 2021-01-15 |
Family
ID=74107134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010982537.8A Pending CN112227141A (en) | 2020-09-17 | 2020-09-17 | Asphalt stone mixing device for road construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112227141A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113174926A (en) * | 2021-03-28 | 2021-07-27 | 崔寿国 | Concrete pipe pile grouting device for building |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1400721A (en) * | 1971-04-15 | 1975-07-23 | Redland Roadstone Ltd | Method of and apparatus for production of coated roadstone |
| CN102519291A (en) * | 2011-12-28 | 2012-06-27 | 英特换热设备(浙江)有限公司 | Heat exchange tube |
| CN105258339A (en) * | 2015-10-15 | 2016-01-20 | 广西广拓新能源科技有限公司 | Automatic dirt removing type air energy water heater |
| CN108673751A (en) * | 2018-06-02 | 2018-10-19 | 安徽砼宇特构科技有限公司 | A kind of quantitative feeding device of concrete |
| CN109351313A (en) * | 2018-12-18 | 2019-02-19 | 威海化工机械有限公司 | A kind of reaction kettle of band heat exchange increasing face device |
| CN110130186A (en) * | 2019-05-23 | 2019-08-16 | 朱建武 | A kind of highway engineering asphalt paving device |
| CN110241682A (en) * | 2019-08-02 | 2019-09-17 | 马鞍山英维爱生态科技有限公司 | A kind of heating device of highway asphalt mixture |
| CN210031415U (en) * | 2019-02-14 | 2020-02-07 | 杨凌职业技术学院(西北农林科技大学职业技术学院) | Mixing device for asphalt mixture |
-
2020
- 2020-09-17 CN CN202010982537.8A patent/CN112227141A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1400721A (en) * | 1971-04-15 | 1975-07-23 | Redland Roadstone Ltd | Method of and apparatus for production of coated roadstone |
| CN102519291A (en) * | 2011-12-28 | 2012-06-27 | 英特换热设备(浙江)有限公司 | Heat exchange tube |
| CN105258339A (en) * | 2015-10-15 | 2016-01-20 | 广西广拓新能源科技有限公司 | Automatic dirt removing type air energy water heater |
| CN108673751A (en) * | 2018-06-02 | 2018-10-19 | 安徽砼宇特构科技有限公司 | A kind of quantitative feeding device of concrete |
| CN109351313A (en) * | 2018-12-18 | 2019-02-19 | 威海化工机械有限公司 | A kind of reaction kettle of band heat exchange increasing face device |
| CN210031415U (en) * | 2019-02-14 | 2020-02-07 | 杨凌职业技术学院(西北农林科技大学职业技术学院) | Mixing device for asphalt mixture |
| CN110130186A (en) * | 2019-05-23 | 2019-08-16 | 朱建武 | A kind of highway engineering asphalt paving device |
| CN110241682A (en) * | 2019-08-02 | 2019-09-17 | 马鞍山英维爱生态科技有限公司 | A kind of heating device of highway asphalt mixture |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113174926A (en) * | 2021-03-28 | 2021-07-27 | 崔寿国 | Concrete pipe pile grouting device for building |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205975311U (en) | Pitch laying device | |
| US10358296B2 (en) | Systems and methods for delivering asphalt concrete | |
| CN213896634U (en) | Asphalt heating and automatic stirring device for pavement construction | |
| CN207121794U (en) | Multipurpose road building vehicle | |
| CN110700064B (en) | Microwave heating car of accurate restoration road surface disease | |
| CN112227141A (en) | Asphalt stone mixing device for road construction | |
| CN102912712B (en) | Cold-stirring and cold-paving all-in-one machine | |
| CN206553898U (en) | A kind of Urban Road Asphalt Pavement Rapid-Repair machine | |
| CN206667006U (en) | A kind of multifunctional road work car | |
| CN209162583U (en) | A kind of portable damaged highway reconditioning auxiliary device | |
| CN112095409A (en) | Highway construction pitch firing equipment | |
| CN212714442U (en) | Repair device for asphalt pavement | |
| CN210458860U (en) | High-efficient melting device of pitch for road construction | |
| CN111809483A (en) | Concrete mixing and pouring integrated vehicle for building road | |
| CN217438632U (en) | Asphalt melting device for highway engineering | |
| CN208959685U (en) | A kind of Novel asphalt concrete Raw material processing processing unit | |
| CN205925599U (en) | Stirring rake and agitator | |
| CN216809440U (en) | A foaming device for pitch production | |
| CN211870238U (en) | Vehicle-mounted automatic asphalt heating and heat-preserving equipment | |
| CN107805993A (en) | A kind of pavement patching pitch heating stirring car | |
| CN212103602U (en) | Asphalt pavement crack sealing machine | |
| CN212103555U (en) | Asphalt paving device for highway maintenance construction | |
| CN204162970U (en) | A kind of cold renewal bitumen emulsion equipment | |
| CN212175425U (en) | Grouting device for repairing crack of asphalt pavement | |
| CN210315176U (en) | Asphalt pavement mixture hot in-place recycling heating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20220923 |
|
| AD01 | Patent right deemed abandoned |