CN112301857A - Discharging device of road crack pouring machine - Google Patents
Discharging device of road crack pouring machine Download PDFInfo
- Publication number
- CN112301857A CN112301857A CN202011234796.9A CN202011234796A CN112301857A CN 112301857 A CN112301857 A CN 112301857A CN 202011234796 A CN202011234796 A CN 202011234796A CN 112301857 A CN112301857 A CN 112301857A
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- Prior art keywords
- blanking
- frame
- alignment jig
- sealing machine
- block
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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
- E01C23/09—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/0966—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving
- E01C23/0973—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving with liquid or semi-liquid materials, e.g. crack sealants
Abstract
The invention discloses a blanking device of a road crack sealing machine, which comprises a rack, wherein a movable frame is arranged at the bottom of the rack; a blanking chamber is arranged in the frame, the top of the blanking chamber is of an open structure, and a blanking port is arranged at the top of the blanking chamber; a first blanking adjusting frame is arranged on one side of the bottom of the blanking bin, a second blanking adjusting frame is arranged on the other side of the bottom of the blanking bin, a gear box is arranged between the upper portion of the first blanking adjusting frame and the upper portion of the second blanking adjusting frame, a gear pair in the gear box is installed between the upper portion of the first blanking adjusting frame and the upper portion of the second blanking adjusting frame, a first blanking plate is arranged on the lower portion of the first blanking adjusting frame, and a second blanking plate is arranged on the lower portion of the second blanking adjusting frame. The width of the feed opening is matched with the size of the part to be repaired of the road, so that the materials in the feed opening are accurately fed onto the part to be repaired of the road to repair the road.
Description
Technical Field
The invention relates to a blanking device, in particular to a blanking device of a road joint sealing machine.
Background
The crack pouring machine belongs to road surface machinery, is mainly used for preventive maintenance of road surface diseases, and is generally matched with a grooving machine, a crack pouring machine and a blower for use. The crack pouring machine is the core equipment of the crack pouring technology. The asphalt hot melting box is a main component of a crack sealing machine, provides asphalt with temperature meeting requirements, and is internally provided with a paddle type forced stirrer and a grid type heat conducting coil pipe so as to ensure that asphalt materials are uniformly heated. The heat conducting oil is indirectly heated by a gas type small heating furnace, and the temperature can be automatically adjusted. In order to ensure that the asphalt is rapidly and uniformly melted, when the temperature of the asphalt reaches 80-100 ℃, the stirrer is started to stir the asphalt material. The materials in the existing crack pouring machine are inconvenient to be accurately conveyed to the crack of the road, and the efficiency of repairing the part to be repaired of the road is low.
Disclosure of Invention
The invention mainly solves the technical problems in the prior art, and provides the road crack sealing machine blanking device which controls the blanking adjusting frame to swing, controls the blanking plate at the lower part of the blanking adjusting frame to be in clutch control, enables the width of the blanking port to be matched with the size of the part to be repaired of the road, enables the materials in the blanking port to be accurately fed to the part to be repaired of the road, and repairs the road.
The technical problem of the invention is mainly solved by the following technical scheme:
a blanking device of a road crack sealing machine comprises a frame, wherein a movable frame is arranged at the bottom of the frame; a blanking chamber is arranged in the frame, the top of the blanking chamber is of an open structure, and a blanking port is arranged at the top of the blanking chamber; the bottom one side of feed bin is equipped with first unloading alignment jig down, the bottom opposite side of feed bin is equipped with second unloading alignment jig down, be equipped with the gear box between the upper portion of first unloading alignment jig and the upper portion of second unloading alignment jig, gear pair in the gear box is installed between the upper portion of first unloading alignment jig and the upper portion of second unloading alignment jig, the lower part of first unloading alignment jig is equipped with first flitch down, the lower part of second unloading alignment jig is equipped with second flitch down, second flitch is installed in one side of feed opening under the second, first flitch is installed at the opposite side of feed opening under the first flitch.
Furthermore, a hydraulic cylinder is arranged at the outer side part of the second blanking adjusting frame, a piston rod is arranged at the front part of the hydraulic cylinder, the front end of the piston rod is connected with the first blanking adjusting frame through a first connecting piece, and the rear part of the hydraulic cylinder is connected with the second blanking adjusting frame through a second connecting piece; the first connecting piece comprises a first connecting block and a first adjusting block, one end of the first connecting block is connected with one end of the first adjusting block through a first connecting bolt, the other end of the first connecting block is connected with the front end of the piston rod, and the other end of the first adjusting block is fixed on the first blanking adjusting frame through a first fixing shaft; the second connecting piece comprises a second connecting block and a second adjusting block, one end of the second connecting block is connected with one end of the second adjusting block through a second connecting bolt, the other end of the second connecting block is connected with the rear portion of the hydraulic cylinder, and the other end of the second adjusting block is connected with a second blanking adjusting frame through a second fixed shaft.
Furthermore, the frame comprises a pair of side frames which are vertically arranged, the side frames are mounted on the movable frame, a top frame is arranged between the tops of the side frames, a cross frame is arranged in the middle of each side frame, and a vertical frame is arranged between each cross frame and the corresponding top frame; the two sides of the rack are provided with ceiling frames, one side of each ceiling frame is fixed on the rack through a fixing block, and the other side of each ceiling frame is provided with a side hole; the front and the back of the frame are both provided with vertically arranged ladders, and the upper ends of the ladders are fixed on the frame through fixing frames; the outer side part of the rack is provided with a temperature controller, the bin wall of the lower bin is of a cavity structure, and an electric heating wire is arranged in the bin wall of the lower bin and is electrically connected with the temperature controller; the heating wire is spiral and is wound on the circumferential surface of the bin wall of the discharging bin; the front part of the hydraulic cylinder is provided with a positioning shell, the top surface of the rear part of the hydraulic cylinder is provided with a fixed block, and a protective shaft is arranged between the fixed block and the positioning shell.
By adopting the technical scheme, an operator transports the blanking device to a road to be repaired, aligns a blanking opening above the part to be repaired of the road, conveys materials for repairing the road of the crack pouring machine into a blanking bin by the operator, and can directly convey the materials downwards through the blanking opening by the blanking bin; the upper parts of the first blanking adjusting frame and the second blanking adjusting frame are rotationally adjusted through a gear pair in the gear box, so that the first blanking adjusting frame and the second blanking adjusting frame are controlled to swing, and a first blanking plate and a second blanking plate at the lower parts of the first blanking adjusting frame and the second blanking adjusting frame are controlled to be in clutch connection and disconnection, so that the size of a gap between the first blanking plate and the second blanking plate can be conveniently adjusted; the width of the feed opening is controlled through the first feed plate and the second feed plate, so that the width of the feed opening is matched with the size of the part to be repaired of the road, the materials in the feed bin are accurately fed to the part to be repaired of the road, and the road is repaired.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a first schematic structural diagram of a blanking device of the road joint sealing machine.
Fig. 2 is a schematic structural diagram of a blanking device of the road joint sealing machine.
Fig. 3 is an enlarged detail view of the area a in fig. 1.
Fig. 4 is an enlarged detail view of the area B in fig. 1.
Fig. 5 is an enlarged detail view of the region C in fig. 1.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.
As shown in fig. 1 to 5, a blanking device of a road joint sealing machine comprises a frame 1, wherein a movable frame 2 is arranged at the bottom of the frame 1; a blanking bin 3 is arranged in the frame 1, a blanking cavity is arranged in the blanking bin 3, the top of the blanking bin 3 is of an open structure, and a blanking port 8 is arranged at the top of the blanking bin 3; the bottom one side of feed bin 3 is equipped with first unloading alignment jig 4 down, the bottom opposite side of feed bin 3 is equipped with second unloading alignment jig 6 down, be equipped with gear box 9 between the upper portion of first unloading alignment jig 4 and the upper portion of second unloading alignment jig 6, gear pair in the gear box 9 is installed between the upper portion of first unloading alignment jig 4 and the upper portion of second unloading alignment jig 6, the lower part of first unloading alignment jig 4 is equipped with first flitch 5, the lower part of second unloading alignment jig 6 is equipped with second flitch 7, second flitch 7 is installed in one side of feed opening 8, first flitch 5 is installed at the opposite side of feed opening 8.
According to the blanking device of the road crack sealing machine, an operator transports the blanking device to a road to be repaired, the blanking port 8 is aligned to the upper part of the part to be repaired of the road, the operator conveys materials for road repair of the crack sealing machine into the blanking bin 3, and the blanking bin 3 can convey the materials directly downwards through the blanking port 8; the upper parts of the first blanking adjusting frame 4 and the second blanking adjusting frame 6 are rotationally adjusted through a gear pair in the gear box 9, so that the first blanking adjusting frame 4 and the second blanking adjusting frame 6 are controlled to perform swing motion, and the first blanking plate 5 and the second blanking plate 7 at the lower parts of the first blanking adjusting frame 4 and the second blanking adjusting frame 6 are subjected to clutch control, so that the size of a gap between the first blanking plate 5 and the second blanking plate 7 can be conveniently adjusted; the width of the feed opening 8 is controlled through the first feed plate 5 and the second feed plate 7, so that the width of the feed opening 8 is matched with the size of the part to be repaired of the road, the materials in the feed bin 3 are accurately fed to the part to be repaired of the road, and the road is repaired.
Preferably, a hydraulic cylinder 10 is arranged at the outer side part of the second blanking adjusting frame 6, a piston rod 11 is arranged at the front part of the hydraulic cylinder 10, the front end of the piston rod 11 is connected with the first blanking adjusting frame 4 through a first connecting piece 12, and the rear part of the hydraulic cylinder 10 is connected with the second blanking adjusting frame 6 through a second connecting piece 26; the hydraulic cylinder 10 pushes and pulls the first blanking adjusting frame 4 through the piston rod 11, the upper portions of the first blanking adjusting frame 4 and the second blanking adjusting frame 6 are adjusted in a rotating mode through a gear pair in the gear box 9, the first blanking adjusting frame 4 and the second blanking adjusting frame 6 are controlled to swing, the first blanking plate 5 and the second blanking plate 7 on the lower portions of the first blanking adjusting frame 4 and the second blanking adjusting frame 6 are controlled to be in clutch control, and the size of a gap between the first blanking plate 5 and the second blanking plate 7 is conveniently adjusted.
Preferably, the first connecting member 12 includes a first connecting block 27 and a first adjusting block 28, one end of the first connecting block 27 is connected with one end of the first adjusting block 28 through a first connecting bolt 30, the other end of the first connecting block 27 is connected with the front end of the piston rod 11, and the other end of the first adjusting block 28 is fixed on the first blanking adjusting frame 4 through a first fixing shaft 29; the second connecting piece 26 comprises a second connecting block 31 and a second adjusting block 32, one end of the second connecting block 31 is connected with one end of the second adjusting block 32 through a second connecting bolt 34, the other end of the second connecting block 31 is connected with the rear part of the hydraulic cylinder 10, and the other end of the second adjusting block 32 is connected with the second blanking adjusting frame 6 through a second fixed shaft 33; the front end of the piston rod 11 is connected with the first blanking adjusting frame 4 through the first adjusting block 28 and the first connecting block 27, and the rear part of the hydraulic cylinder 10 is connected with the second blanking adjusting frame 6 through the second connecting block 31 and the second adjusting block 32.
Preferably, the frame 1 comprises a pair of side frames 16 which are vertically arranged, the side frames 16 are mounted on the moving frame 2, a top frame 17 is arranged between the tops of the side frames 16, a cross frame 18 is arranged in the middle of each side frame 16, and a vertical frame 19 is arranged between each cross frame 18 and the top frame 17; the frame 1 is formed by the side frames 16, the top frame 17, the cross frames 18 and the vertical frames 19, so that the strength of the frame 1 is greatly increased.
Preferably, ceiling frames 20 are arranged on two sides of the rack 1, one side of each ceiling frame 20 is fixed on the rack 1 through a fixing block 21, and a side hole 22 is arranged on the other side of each ceiling frame 20; the side holes 22 may be installed with fixing pipes, the other side of the ceiling frame 20 is fixedly installed through the fixing pipes, and both sides of the rack 1 are fixedly installed through the ceiling frame 20.
Preferably, the front and the back of the frame 1 are both provided with vertically arranged ladders 23, and the upper ends of the ladders 23 are fixed on the frame 1 through fixing frames 24; the ladder 23 facilitates the operator to climb up the frame 1.
Preferably, the outer side of the frame 1 is provided with a temperature controller 25, the wall of the lower hopper 3 is a cavity structure, and the wall of the lower hopper 3 is internally provided with an electric heating wire which is electrically connected with the temperature controller 25; the heating wire is spiral and is wound on the circumferential surface of the bin wall of the blanking bin 3; the temperature controller 25 controls the electric heating wire to realize electric heating, and the electric heating wire controls the lower feed bin 3 to realize electric heating, thereby controlling the temperature of the materials in the lower feed bin 3.
Preferably, a positioning shell 13 is arranged at the front part of the hydraulic cylinder 10, a fixed block 14 is arranged on the top surface of the rear part of the hydraulic cylinder 10, and a protection shaft 15 is arranged between the fixed block 14 and the positioning shell 13; the side of the hydraulic cylinder 10 is protected by the protection shaft 15, and the front and rear portions of the hydraulic cylinder 10 are fixedly attached by the positioning housing 13 and the fixing block 14.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (10)
1. A blanking device of a road crack sealing machine comprises a frame, wherein a movable frame is arranged at the bottom of the frame; a blanking chamber is arranged in the frame, the top of the blanking chamber is of an open structure, and a blanking port is arranged at the top of the blanking chamber;
the method is characterized in that: the bottom one side of feed bin is equipped with first unloading alignment jig down, the bottom opposite side of feed bin is equipped with second unloading alignment jig down, be equipped with the gear box between the upper portion of first unloading alignment jig and the upper portion of second unloading alignment jig, gear pair in the gear box is installed between the upper portion of first unloading alignment jig and the upper portion of second unloading alignment jig, the lower part of first unloading alignment jig is equipped with first flitch down, the lower part of second unloading alignment jig is equipped with second flitch down, second flitch is installed in one side of feed opening under the second, first flitch is installed at the opposite side of feed opening under the first flitch.
2. The blanking device of the road joint sealing machine according to claim 1, characterized in that: the outside portion of second unloading alignment jig is equipped with the pneumatic cylinder, and the front portion of pneumatic cylinder is equipped with the piston rod, and the front end of piston rod is connected with first unloading alignment jig through first connecting piece, and the rear portion of pneumatic cylinder is connected with second unloading alignment jig through the second connecting piece.
3. The blanking device of the road joint sealing machine according to claim 2, characterized in that: the first connecting piece comprises a first connecting block and a first adjusting block, one end of the first connecting block is connected with one end of the first adjusting block through a first connecting bolt, the other end of the first connecting block is connected with the front end of the piston rod, and the other end of the first adjusting block is fixed on the first blanking adjusting frame through a first fixing shaft.
4. The blanking device of the road joint sealing machine according to claim 2, characterized in that: the second connecting piece comprises a second connecting block and a second adjusting block, one end of the second connecting block is connected with one end of the second adjusting block through a second connecting bolt, the other end of the second connecting block is connected with the rear portion of the hydraulic cylinder, and the other end of the second adjusting block is connected with a second blanking adjusting frame through a second fixed shaft.
5. The blanking device of the road joint sealing machine according to claim 1, characterized in that: the frame includes that a pair of side bearer that is vertical arrangement, side bearer are installed on moving the frame, are equipped with the roof-rack between the top of side bearer, and the middle part of side bearer is equipped with the crossbearer, is equipped with perpendicular frame between crossbearer and the roof-rack.
6. The blanking device of the road joint sealing machine according to claim 1, characterized in that: and the two sides of the rack are provided with ceiling frames, one side of each ceiling frame is fixed on the rack through a fixing block, and the other side of each ceiling frame is provided with a side hole.
7. The blanking device of the road joint sealing machine according to claim 1, characterized in that: the front and the back of the frame are both provided with vertically arranged ladders, and the upper ends of the ladders are fixed on the frame through fixing frames.
8. The blanking device of the road joint sealing machine according to claim 1, characterized in that: the outer side of the frame is provided with a temperature controller, the bin wall of the lower bin is of a cavity structure, and heating wires are arranged in the bin wall of the lower bin and are electrically connected with the temperature controller.
9. The blanking device of the road joint sealing machine according to claim 8, characterized in that: the heating wire is spiral and is wound on the circumferential surface of the bin wall of the discharging bin.
10. The blanking device of the road joint sealing machine according to claim 1, characterized in that: the front part of the hydraulic cylinder is provided with a positioning shell, the top surface of the rear part of the hydraulic cylinder is provided with a fixed block, and a protective shaft is arranged between the fixed block and the positioning shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011234796.9A CN112301857A (en) | 2020-11-07 | 2020-11-07 | Discharging device of road crack pouring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011234796.9A CN112301857A (en) | 2020-11-07 | 2020-11-07 | Discharging device of road crack pouring machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112301857A true CN112301857A (en) | 2021-02-02 |
Family
ID=74325275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011234796.9A Pending CN112301857A (en) | 2020-11-07 | 2020-11-07 | Discharging device of road crack pouring machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112301857A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2963473D1 (en) * | 1978-06-22 | 1982-09-30 | Viamark Societe | Apparatus for applying a joint or crack sealant, more particularly on road surfacings |
| KR100824219B1 (en) * | 2007-01-09 | 2008-04-24 | 김용현 | Method of repairing construction of roads or bridges |
| CN201058966Y (en) * | 2007-06-08 | 2008-05-14 | 彭柏玲 | Road surface crack pouring machine |
| KR20120121523A (en) * | 2011-04-27 | 2012-11-06 | 현대제철 주식회사 | Switchgear for fuel and raw metal in storehouse |
| US20140301783A1 (en) * | 2010-07-28 | 2014-10-09 | Patch Management, Inc. | Mini patcher for patching potholes and the like and method for performing same |
| CN105937200A (en) * | 2016-06-20 | 2016-09-14 | 黄长安 | Special vehicle for construction of zebra crossings and construction method thereof |
| CN108221619A (en) * | 2018-03-19 | 2018-06-29 | 钱幼华 | A kind of constructing device of traffic route maintenance pretreatment |
| CN109914212A (en) * | 2019-04-02 | 2019-06-21 | 张丽范 | It is a kind of to facilitate the road-surface joint-grouting machine for adjusting joint filling size |
| CN209482112U (en) * | 2018-12-20 | 2019-10-11 | 安徽择正公路工程有限责任公司 | Roadmarking device |
| CN209777734U (en) * | 2018-12-04 | 2019-12-13 | 江门市凯斯特尔实业有限公司 | Vibrating feeder capable of adjusting blanking amount |
| CN210104519U (en) * | 2019-05-21 | 2020-02-21 | 浙江新世纪工程咨询有限公司 | A cementation of fissures machine for bituminous paving construction is supervised |
| CN210737323U (en) * | 2019-08-12 | 2020-06-12 | 安徽路达公路工程有限责任公司 | Leveling device for filling damaged road surface of highway |
| CN211224786U (en) * | 2019-10-31 | 2020-08-11 | 太仓申昆混凝土有限公司 | Hopper under concrete raw materials |
| CN111549633A (en) * | 2020-05-18 | 2020-08-18 | 尉静 | Highway road surface maintenance is with clearance cementation of fissures all-in-one |
-
2020
- 2020-11-07 CN CN202011234796.9A patent/CN112301857A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2963473D1 (en) * | 1978-06-22 | 1982-09-30 | Viamark Societe | Apparatus for applying a joint or crack sealant, more particularly on road surfacings |
| KR100824219B1 (en) * | 2007-01-09 | 2008-04-24 | 김용현 | Method of repairing construction of roads or bridges |
| CN201058966Y (en) * | 2007-06-08 | 2008-05-14 | 彭柏玲 | Road surface crack pouring machine |
| US20140301783A1 (en) * | 2010-07-28 | 2014-10-09 | Patch Management, Inc. | Mini patcher for patching potholes and the like and method for performing same |
| KR20120121523A (en) * | 2011-04-27 | 2012-11-06 | 현대제철 주식회사 | Switchgear for fuel and raw metal in storehouse |
| CN105937200A (en) * | 2016-06-20 | 2016-09-14 | 黄长安 | Special vehicle for construction of zebra crossings and construction method thereof |
| CN108221619A (en) * | 2018-03-19 | 2018-06-29 | 钱幼华 | A kind of constructing device of traffic route maintenance pretreatment |
| CN209777734U (en) * | 2018-12-04 | 2019-12-13 | 江门市凯斯特尔实业有限公司 | Vibrating feeder capable of adjusting blanking amount |
| CN209482112U (en) * | 2018-12-20 | 2019-10-11 | 安徽择正公路工程有限责任公司 | Roadmarking device |
| CN109914212A (en) * | 2019-04-02 | 2019-06-21 | 张丽范 | It is a kind of to facilitate the road-surface joint-grouting machine for adjusting joint filling size |
| CN210104519U (en) * | 2019-05-21 | 2020-02-21 | 浙江新世纪工程咨询有限公司 | A cementation of fissures machine for bituminous paving construction is supervised |
| CN210737323U (en) * | 2019-08-12 | 2020-06-12 | 安徽路达公路工程有限责任公司 | Leveling device for filling damaged road surface of highway |
| CN211224786U (en) * | 2019-10-31 | 2020-08-11 | 太仓申昆混凝土有限公司 | Hopper under concrete raw materials |
| CN111549633A (en) * | 2020-05-18 | 2020-08-18 | 尉静 | Highway road surface maintenance is with clearance cementation of fissures all-in-one |
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Application publication date: 20210202 |