CN113309371A - Laying device and laying method for masonry dry powder mortar - Google Patents
Laying device and laying method for masonry dry powder mortar Download PDFInfo
- Publication number
- CN113309371A CN113309371A CN202110749329.8A CN202110749329A CN113309371A CN 113309371 A CN113309371 A CN 113309371A CN 202110749329 A CN202110749329 A CN 202110749329A CN 113309371 A CN113309371 A CN 113309371A
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- Prior art keywords
- dry powder
- powder mortar
- paving
- storehouse
- mortar
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/20—Tools or apparatus for applying mortar
- E04G21/206—Devices to apply thin-bed mortar joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/10—Mixing in containers not actuated to effect the mixing
- B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
- B28C5/16—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a vertical or steeply inclined axis
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Road Paving Machines (AREA)
Abstract
The invention provides a laying device for masonry dry powder mortar, which comprises a laying bin, a leveling mechanism, a sliding limiting mechanism, a stirring mechanism and a horizontal conveying mechanism, wherein the bottom of the laying bin is of an open structure, the stirring mechanism for uniformly distributing the dry powder mortar on the top of a wall body is arranged on one side inside the laying bin, the leveling mechanism with an adjustable upper position and a lower position is arranged on the other side inside the laying bin, the leveling mechanism is used for flatly laying the dry powder mortar on the top of the wall body, and a plurality of sliding limiting mechanisms are uniformly arranged on the outer side wall of the laying bin, close to the bottom. The paving bin has the advantages that when bricks are stacked, dry mortar between the bricks is more uniform, so that the connection positions between the bricks are more stable, the using effect is better, the leveling mechanism is further arranged inside the paving bin, and the dry mortar on the bricks can be kept constant in thickness by scraping the dry mortar through the leveling mechanism.
Description
Technical Field
The invention relates to the technical field of dry powder mortar, in particular to a laying dry powder mortar paving device and a laying method thereof.
Background
The dry powder mortar is a granular or powdery material which is prepared by physically mixing dry and screened aggregate, an inorganic cementing material, an additive and the like according to a certain proportion, is transported to a construction site in a bag or in bulk, and can be directly used after being mixed with water. Also known as mortar dry powder, dry-mixed mortar, dry-mixed powder, and some construction adhesives also belong to this class. The dry powder mortar plays roles of bonding, lining, protection and decoration in a thin layer in the construction industry, and has extremely wide application in construction and decoration engineering.
At present, when the laying device and the laying method of the laying dry powder mortar are used, the dry powder mortar is conveyed to the bricks one by one manually, and the quantity of the dry powder mortar is only one brick at a time.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a laying dry powder mortar paving device and a laying method thereof.
The invention solves the technical problems through the following technical means:
the utility model provides a build dry powder mortar paving device by laying bricks or stones, is including the storehouse, levelling mechanism, slip stop gear, rabbling mechanism and the horizontal transport mechanism that paves, the bottom in the storehouse of paving is open type structure, the inside one side in storehouse of paving is equipped with the rabbling mechanism that even dry powder mortar is located the wall body top, the levelling mechanism that the position is adjustable about the inside opposite side in storehouse of paving is equipped with, the dry powder mortar at levelling mechanism tiling wall body top, the storehouse lateral wall of paving is close to bottom position department and evenly is equipped with a plurality of slip stop gear, slip stop gear is located slide on the horizontal transport mechanism, horizontal transport mechanism is fixed in the wall body both sides.
Preferably, the rabbling mechanism includes motor, axis of rotation and puddler, the motor bolt fastening is on the inside roof in storehouse that paves, motor bottom transmission is connected with the axis of rotation, the angle such as bottom of axis of rotation is fixed with a plurality of puddlers, the puddler rotates and drives the dry powder mortar and evenly paves the wall body top.
Preferably, leveling mechanism is including the storehouse of paving, rotating connection card, adjusting bolt and rubber expansion plate, the storehouse of paving sets up inside the storehouse of paving, adjusting bolt passes the storehouse roof of paving and is connected to on the storehouse board, the storehouse board with be equipped with between the adjusting bolt and rotate the connection card, the storehouse board one end of paving is the arc structure, the arc end of paving connects rubber expansion plate one end, the rubber expansion plate other end is fixed on the inside roof of storehouse of paving.
Preferably, horizontal conveyor includes sliding connection board, limit baffle and wears to establish the board, sliding connection board's top both sides are fixed with limit baffle, evenly be fixed with on the lateral wall of sliding connection board one side and wear to establish the board.
Preferably, the sliding limiting mechanism comprises a fastening bolt, a supporting column and a sliding wheel, the top of the supporting column is fixed on the outer wall of the paving bin through the fastening bolt, and the bottom of the supporting column is rotatably connected with the sliding wheel.
Preferably, the device further comprises a hanging mechanism, the hanging mechanism is fixed at the tops of the two ends of the horizontal conveying mechanism and comprises a positioning plate, a connecting bolt and a fixing rod, one end of the fixing rod is perpendicularly connected with the horizontal conveying mechanism, and the other end of the fixing rod is connected with the positioning plate through the connecting bolt.
Preferably, an operating handle is fixed at the middle position of the top of the paving bin, and the operating handle is of an arc-shaped structure.
A paving method of a masonry dry powder mortar paving device comprises the following steps:
s1, mixing dry powder mortar: adding water into the dry-mixed mortar for mixing until the mixture is pasty;
s2, placing dry powder mortar: placing mixed slurry prepared by mixing S1 at the middle position of the brick;
s3, stirring the dry powder mortar: stirring the slurry placed in the middle of the brick by using a stirring mechanism until the top of the brick is uniformly paved with the slurry;
s4, flattening dry powder mortar: leveling the surface slurry of the brick by utilizing a leveling mechanism to move horizontally;
s5, waste collection: and the leveling mechanism moves to overflow slurry when leveling the slurry on the surface of the brick and collects the slurry by using the horizontal conveying mechanism.
The invention has the advantages that: the stirring mechanism is arranged in the paving bin, and dry mortar placed on the tops of the bricks can be dispersed through the rotation of the stirring mechanism, so that the dry mortar is uniformly paved on the tops of the bricks, and when the bricks are piled, the dry mortar between the bricks is more uniform, so that the connecting positions between the bricks are more stable, the using effect is better, the leveling mechanism is also arranged in the paving bin, and the dry mortar on the bricks can be kept for a long time by scraping the dry mortar through the leveling mechanism, so that the connecting effect between the bricks is better; in addition, a large amount of dry powder mortar can be paved at one time through the arrangement of the device, so that the piling speed of the brick blocks is improved, and the using effect is better.
Drawings
FIG. 1 is a schematic structural view of a laying dry powder mortar paving device according to an embodiment of the invention;
FIG. 2 is a schematic structural view of a joint between a paving bin and a sliding limiting mechanism according to an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a stirring mechanism according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a leveling mechanism according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a horizontal conveying mechanism according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a sliding position limiting mechanism according to an embodiment of the present invention;
fig. 7 is a schematic view of an internal structure of a paving bin according to an embodiment of the invention.
Reference numbers in the figures: 10. the paving machine comprises a paving bin, 20, a leveling mechanism, 21, a leveling plate, 22, a rotary connecting clamp, 23, an adjusting bolt, 24, a rubber expansion plate, 30, a sliding limiting mechanism, 31, a fastening bolt, 32, a supporting column, 33, a sliding wheel, 40, a stirring mechanism, 41, a motor, 42, a rotating shaft, 43, a stirring rod, 50, a horizontal conveying mechanism, 51, a sliding connecting plate, 52, a limiting baffle, 53, a penetrating plate, 60, a hanging mechanism, 61, a positioning plate, 62, a connecting bolt, 63, a fixing rod, 70 and an operating handle.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
As shown in fig. 1-2, this embodiment a build dry powder mortar paving device by laying bricks or stones, including the storehouse 10 that paves, leveling mechanism 20, slip stop gear 30, rabbling mechanism 40 and horizontal conveying mechanism 50, the bottom in the storehouse 10 that paves is the open structure, the inside one side in the storehouse 10 that paves is equipped with the rabbling mechanism 40 that even dry powder mortar is located the wall body top, the inside opposite side in the storehouse 10 that paves is equipped with leveling mechanism 20 with adjustable upper and lower position, leveling mechanism 20 tiles the dry powder mortar at wall body top, the storehouse 10 lateral wall that paves is close to bottom position department and evenly is equipped with a plurality of slip stop gear 30, slip stop gear 30 is located slide on the horizontal conveying mechanism 50, horizontal conveying mechanism 50 is fixed in the wall body both sides.
The stirring mechanism 40 is arranged in the paving bin 10, the dry mortar placed on the top of the brick can be dispersed through the rotation of the stirring mechanism 40, so that the dry mortar is uniformly paved on the top of the brick, when the brick is piled, the dry mortar between the brick and the brick is more uniform, the connection position between the brick and the brick is more stable, the using effect is better, the leveling mechanism 20 is also arranged in the paving bin 10, the dry mortar is scraped through the leveling mechanism 20, the thickness of the dry mortar on the brick can be kept all the time, and the connection effect between the brick and the brick is better; in addition, through the arrangement of the device, a large amount of dry powder mortar can be paved at one time, so that the stacking speed of the brick is increased, and the using effect is better; through the setting of the storehouse 10 that paves, can make the width that dry powder mortar paved obtain the restriction on the one hand to make the dry powder mortar effect of paving better, on the other hand can rotate the in-process at rabbling mechanism 40, avoid dry powder mortar to scatter outside the fragment of brick, avoid causing the extravagant phenomenon of dry powder mortar to take place.
As shown in fig. 3, the stirring mechanism 40 includes a motor 41, a rotating shaft 42 and stirring rods 43, the motor 41 is bolted on the top wall inside the paving bin 10, the rotating shaft 42 is connected to the bottom of the motor 41 in a transmission manner, a plurality of stirring rods 43 are fixed at the bottom of the rotating shaft 42 at equal angles, and the stirring rods 43 rotate to drive the dry-mixed mortar to be uniformly paved on the top of the wall.
The motor 41 works, drives the axis of rotation 42 and rotates to drive the puddler 43 of axis of rotation 42 bottom and rotate, break up the operation to placing the dry powder mortar of locating at fragment of brick intermediate position, constantly forward moving process at rabbling mechanism 40 can make the fragment of brick top evenly spread the dry powder mortar.
As shown in fig. 4, leveling mechanism 20 includes the spreading board 21, rotates connecting card 22, adjusting bolt 23 and rubber expansion plate 24, the spreading board 21 sets up inside the storehouse 10 that paves, adjusting bolt 23 passes the storehouse 10 roof that paves and is connected to on the spreading board 21, the spreading board 21 with be equipped with between the adjusting bolt 23 and rotate connecting card 22, spreading board 21 one end is the arc structure, the 21 arc end of spreading board is connected rubber expansion plate 24 one end, the 24 other ends of rubber expansion plate are fixed on the inside roof of storehouse 10 that paves.
A user rotates the adjusting bolt 23 to adjust the distance between the spreading plate 21 and the spreading bin 10, the spreading plate 21 is horizontally placed, one end of the spreading plate 21 is of an arc-shaped structure, the dry powder mortar after stirring treatment can be spread in the horizontal moving process of the spreading plate 21, and bumps are uniformly arranged at the bottom of the spreading plate 21, so that the surface of the dry powder mortar can be kept rough in the moving process of the spreading plate 21, the friction force between bricks and the dry powder mortar is increased, the positions of the bricks are more stable, and the using effect is better; the arc end of the spreading plate 21 is connected with one end of the rubber expansion plate 24, the other end of the rubber expansion plate 24 is fixed on a top plate in the spreading bin 10, and the spreading plate 21 can move up and down in a certain range.
As shown in fig. 5, the horizontal conveying mechanism 50 includes a sliding connection plate 51, a limit baffle 52 and a penetrating plate 53, the limit baffle 52 is fixed on two sides of the top of the sliding connection plate 51, and the penetrating plate 53 is uniformly fixed on one side wall of the sliding connection plate 51.
As shown in fig. 6, the sliding limiting mechanism 30 includes a fastening bolt 31, a supporting column 32 and a sliding wheel 33, the top of the supporting column 32 is fixed on the outer wall of the paving bin 10 through the fastening bolt 31, and the bottom of the supporting column 32 is rotatably connected with the sliding wheel 33.
The sliding wheel 33 moves on the sliding connection plate 51, so that on one hand, the height of the horizontal conveying mechanism 50 can be kept stable, and the vertical fluctuation phenomenon can not be generated, and on the other hand, the movement of the paving bin 10 in the horizontal direction can be assisted, so that the labor is saved and the using effect is better in the operation process of a user; the limiting baffles 52 are fixed on both sides of the top of the sliding connection plate 51, so that the sliding wheel 33 can keep moving linearly without shaking left and right.
As shown in fig. 1, the laying device for masonry dry powder mortar further comprises a hanging mechanism 60, the hanging mechanism 60 is fixed at the tops of two ends of the horizontal conveying mechanism 50, the hanging mechanism 60 comprises a positioning plate 61, a connecting bolt 62 and a fixing rod 63, one end of the fixing rod 63 is vertically connected with the horizontal conveying mechanism 50, and the other end of the fixing rod 63 is connected with the positioning plate 61 through the connecting bolt 62.
Through the setting of hanging mechanism 60, can be so that horizontal transport mechanism 50 is whole to carry out the fixed in the position through hanging mechanism 60, increase horizontal transport mechanism 50's fixed mode for the holistic application scope of paving device is wider.
As shown in fig. 7, an operating handle 70 is fixed at a middle position of the top of the paving bin 10, and the operating handle 70 has an arc-shaped structure, so that a user can hold the operating handle 70 to move the paving bin 10 conveniently, and the work efficiency is improved.
A paving method of a masonry dry powder mortar paving device comprises the following steps:
s1, mixing dry powder mortar: adding water into the dry-mixed mortar for mixing until the mixture is pasty;
s2, placing dry powder mortar: placing mixed slurry prepared by mixing S1 at the middle position of the brick;
s3, stirring the dry powder mortar: stirring the slurry placed in the middle of the brick by using a stirring mechanism 40 until the top of the brick is uniformly paved with the slurry;
s4, flattening dry powder mortar: leveling the surface slurry of the brick by using a leveling mechanism 20 to move horizontally;
s5, waste collection: the leveling mechanism 20 moves overflowed slurry when leveling the slurry on the surface of the brick, and the overflowed slurry is collected by the horizontal conveying mechanism 50.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A laying device for masonry dry powder mortar is characterized in that: including storehouse (10) paves, leveling mechanism (20), slip stop gear (30), rabbling mechanism (40) and horizontal conveying mechanism (50), the bottom in storehouse (10) paves is open structure, the inside one side in storehouse (10) paves is equipped with rabbling mechanism (40) that even dry powder mortar is located the wall body top, leveling mechanism (20) that position is adjustable about the inside opposite side in storehouse (10) paves is equipped with, the dry powder mortar at leveling mechanism (20) tiling wall body top, storehouse (10) lateral wall paves is close to bottom position department and evenly is equipped with a plurality of slip stop gear (30), slip stop gear (30) are located slide on horizontal conveying mechanism (50), horizontal conveying mechanism (50) are fixed in the wall body both sides.
2. A masonry dry powder mortar paving apparatus as defined in claim 1, further comprising: rabbling mechanism (40) include motor (41), axis of rotation (42) and puddler (43), motor (41) bolt fastening is on the inside roof in storehouse (10) paves, motor (41) bottom transmission is connected with axis of rotation (42), the angle such as bottom of axis of rotation (42) is fixed with a plurality of puddlers (43), puddler (43) rotate and drive the even wall body top that paves of dry powder mortar.
3. A masonry dry powder mortar paving apparatus as defined in claim 2, wherein: leveling mechanism (20) are including spreading out board (21), rotation connection card (22), adjusting bolt (23) and rubber expansion plate (24), spreading out board (21) sets up inside storehouse (10) paves, adjusting bolt (23) pass storehouse (10) roof of paving and be connected to spreading out board (21), spreading out board (21) with be equipped with between adjusting bolt (23) and rotate connection card (22), spreading out board (21) one end is the arc structure, spreading out board (21) arc end is connected rubber expansion plate (24) one end, the rubber expansion plate (24) other end is fixed on storehouse (10) inside roof paves.
4. A masonry dry powder mortar paving apparatus as defined in claim 1, further comprising: horizontal feed mechanism (50) include sliding connection board (51), limit baffle (52) and wear to establish board (53), sliding connection board's (51) top both sides are fixed with limit baffle (52), evenly be fixed with on sliding connection board (51) one side lateral wall and wear to establish board (53).
5. A masonry dry powder mortar paving apparatus as defined in claim 4, wherein: the sliding limiting mechanism (30) comprises a fastening bolt (31), a supporting column (32) and a sliding wheel (33), the top of the supporting column (32) is fixed on the outer wall of the paving bin (10) through the fastening bolt (31), and the bottom of the supporting column (32) is rotatably connected with the sliding wheel (33).
6. A masonry dry mortar paving apparatus as defined in any one of claims 1-5, wherein: still including hanging mechanism (60), the both ends top of horizontal conveyor mechanism (50) is fixed with hangs mechanism (60), hang mechanism (60) including locating plate (61), connecting bolt (62) and dead lever (63), dead lever (63) one end is connected perpendicularly horizontal conveyor mechanism (50), dead lever (63) other end passes through connecting bolt (62) are connected locating plate (61).
7. A masonry dry powder mortar paving apparatus as defined in claim 6, further comprising: an operating handle (70) is fixed at the middle position of the top of the paving bin (10), and the operating handle (70) is of an arc-shaped structure.
8. The paving method of the masonry dry powder mortar paving device according to claim 1, characterized by comprising the following steps: the method comprises the following steps:
s1, mixing dry powder mortar: adding water into the dry-mixed mortar for mixing until the mixture is pasty;
s2, placing dry powder mortar: placing mixed slurry prepared by mixing S1 at the middle position of the brick;
s3, stirring the dry powder mortar: stirring the slurry placed in the middle of the brick by using a stirring mechanism (40) until the top of the brick is uniformly paved with the slurry;
s4, flattening dry powder mortar: leveling the surface slurry of the brick by utilizing a leveling mechanism (20) to move horizontally;
s5, waste collection: the leveling mechanism (20) moves overflowed slurry when leveling treatment is carried out on the slurry on the surface of the brick, and the slurry is collected by the horizontal conveying mechanism (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110749329.8A CN113309371A (en) | 2021-07-02 | 2021-07-02 | Laying device and laying method for masonry dry powder mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110749329.8A CN113309371A (en) | 2021-07-02 | 2021-07-02 | Laying device and laying method for masonry dry powder mortar |
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| Publication Number | Publication Date |
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| CN113309371A true CN113309371A (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110749329.8A Pending CN113309371A (en) | 2021-07-02 | 2021-07-02 | Laying device and laying method for masonry dry powder mortar |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115749326A (en) * | 2022-11-07 | 2023-03-07 | 中建八局第二建设有限公司 | High-efficient brick brickwork mortar vehicle that paves |
| CN115749326B (en) * | 2022-11-07 | 2024-05-24 | 中建八局第二建设有限公司 | High-efficient brick brickwork mortar paving car |
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| BR102018068716A2 (en) * | 2018-09-14 | 2020-03-24 | Atercino Soares Dos Santos Júnior | AID TOOL IN CIVIL CONSTRUCTION FOR THE CONSTRUCTION OF JOINTS BETWEEN MASONRY ELEMENTS - CERAMIC BRICKS, BLOCKS, ETC. |
| CN212128770U (en) * | 2020-02-18 | 2020-12-11 | 湖州静雁交通建设工程有限公司 | Asphalt paving device |
| CN212562573U (en) * | 2020-06-15 | 2021-02-19 | 中冶建工集团有限公司 | Mortar flattening device for wall building blocks |
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2021
- 2021-07-02 CN CN202110749329.8A patent/CN113309371A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| CN204876606U (en) * | 2015-07-28 | 2015-12-16 | 高飞龙 | Novel stand grouts wall telephone |
| CN107060354A (en) * | 2017-05-09 | 2017-08-18 | 巢湖学院 | A kind of brick laying device |
| BR102018068716A2 (en) * | 2018-09-14 | 2020-03-24 | Atercino Soares Dos Santos Júnior | AID TOOL IN CIVIL CONSTRUCTION FOR THE CONSTRUCTION OF JOINTS BETWEEN MASONRY ELEMENTS - CERAMIC BRICKS, BLOCKS, ETC. |
| CN212128770U (en) * | 2020-02-18 | 2020-12-11 | 湖州静雁交通建设工程有限公司 | Asphalt paving device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115749326A (en) * | 2022-11-07 | 2023-03-07 | 中建八局第二建设有限公司 | High-efficient brick brickwork mortar vehicle that paves |
| CN115749326B (en) * | 2022-11-07 | 2024-05-24 | 中建八局第二建设有限公司 | High-efficient brick brickwork mortar paving car |
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Application publication date: 20210827 |
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