CN110092134B - Broken conveyor of high-rise building waste material - Google Patents
Broken conveyor of high-rise building waste material Download PDFInfo
- Publication number
- CN110092134B CN110092134B CN201910375996.7A CN201910375996A CN110092134B CN 110092134 B CN110092134 B CN 110092134B CN 201910375996 A CN201910375996 A CN 201910375996A CN 110092134 B CN110092134 B CN 110092134B
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- Prior art keywords
- conveying pipe
- fixed
- dust
- crushing
- rise building
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/02—Disintegrating by knives or other cutting or tearing members which chop material into fragments with reciprocating knives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G11/00—Chutes
- B65G11/02—Chutes of straight form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G11/00—Chutes
- B65G11/20—Auxiliary devices, e.g. for deflecting, controlling speed of, or agitating articles or solids
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Refuse Collection And Transfer (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a high-rise building waste crushing and conveying device which comprises a crushing box and a plurality of conveying pipe sections, wherein the crushing box is fixed on a construction floor, and the conveying pipe sections are laid downwards along an elevator shaft from the construction floor; the crushing box is provided with a material guide, a crushing roller, an ear seat, a vertical plate, a partition plate, a hydraulic push rod, a movable rod and a multi-tooth cutter, and a coarse material discharge hole is uniformly formed in the middle plate body of the partition plate; the conveying pipe joint comprises a rectangular conveying pipe, the two ends of the rectangular conveying pipe are fixed with an upper end plate and a lower end plate which are connected through a plurality of buffer springs, the rectangular conveying pipe is located on one narrow edge portion and is provided with a dust guide opening, the outer side of the dust guide opening is fixed with an outer cover with a dust suction pipe, and a dredging assembly is arranged in the other narrow edge portion and an inner cavity. The dust removing device can effectively remove dust generated in the conveying process, avoids the occurrence of raised dust, and has good environmental protection effect; when the blocking phenomenon appears, the blocking can be quickly eliminated only by operating outside the conveying pipe joint, the conveying pipe joint does not need to be detached, and the operation is convenient.
Description
Technical Field
The invention relates to the technical field of high-rise building waste recovery, in particular to a high-rise building waste crushing and conveying device.
Background
High-rise building waste includes concrete (concrete not used in construction), building scraps (old concrete produced by chiseling, plastering, etc., mineral materials such as mortar), and types of dust, wood, paper, metal and other waste. Present building waste recovery device to high-rise building waste mostly utilizes elevartor shaft space installation transfer pipe, recycles transfer pipe and conveys waste material to ground, shifts to crushing mechanism at last and handles.
Patent specification No. CN206823976U discloses a discharge mechanism for construction waste recycling device, comprising: the bottom end of the recovery pipe of the construction waste recovery device is sealed by a vertical plate, and the vertical plate is positioned in the vertical direction; the first material guide pipe is communicated with the layering assembly, is parallel to the layering assembly, penetrates through the vertical plate, forms an acute angle with the plane of the vertical plate, and is hollow and cylindrical; and the second material guide pipe is arranged below the first material guide pipe, the second material guide pipe is arranged at the joint of the vertical plate and the recovery pipe, the second material guide pipe is communicated with the recovery pipe, and an included angle is formed between the first material guide pipe and the second material guide pipe.
The discharging mechanism of the building waste recovery device has the disadvantages in the use process, firstly, the waste cannot be quickly crushed before being conveyed, and the waste block head is large, so that the waste generates large impact force due to gravitational potential energy in the conveying process and is not beneficial to conveying; secondly, the pipeline is not provided with a buffer mechanism, so that the pipeline is greatly impacted and easily damaged during discharging; thirdly, dust generated in the conveying process cannot be effectively removed, so that raised dust is generated; fourthly do not set up the mediation subassembly in the pipeline, can not in time dredge when inside the jam appearing, need dismantle just can dredge the operation.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide a high-rise building waste crushing and conveying device.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
a high-rise building waste crushing and conveying device comprises a crushing box and a plurality of conveying pipe sections fixed at the lower end of the crushing box, wherein the crushing box is fixed at a construction floor, and the conveying pipe sections are laid downwards along an elevator shaft from the construction floor;
a material guide block is arranged at an opening at the upper end of the crushing box, a chute is arranged inside the material guide block, two crushing rollers which rotate relatively are arranged at the bottom end of the chute, the crushing rollers are fixed on a vertical plate through lug seats, the lower end of the vertical plate is fixed on a partition plate, a hydraulic push rod is fixed on the outer side of the vertical plate, a multi-tooth cutter is fixed on a movable rod of the hydraulic push rod, and a coarse material discharge hole is uniformly formed in the middle plate body of the partition plate;
the conveying pipe joint comprises a rectangular conveying pipe, an upper end plate and a lower end plate are fixed at two ends of the rectangular conveying pipe, the upper end plate and the lower end plate of the rectangular conveying pipe, which are positioned at two wide side parts, are connected through a plurality of buffer springs, a dust guide port is formed in one narrow side part of the rectangular conveying pipe, an outer cover is fixed on the outer side of the dust guide port, a sieve plate is fixed on the outer cover, which is close to the dust guide port, a dust suction pipe penetrates through the outer end plate of the outer cover, the dust suction pipe is connected with a dust remover through a hose, and a dredging component is arranged in the other narrow side part of the rectangular;
the mediation subassembly includes a plurality of pivots, the pivot passes from the narrow sideboard of rectangle conveyer pipe, the pivot is located the axis body equipartition thorn pole in the rectangle conveyer pipe, and the end fixing that is located the rectangle conveyer pipe is outside has from the driving wheel, establish drive belt and locating wheel transmission on its surface from the driving wheel through the cover and be connected, the inboard bracing piece rotation restriction of locating wheel is in the locating piece, the locating piece is fixed at the narrow sideboard outer wall of rectangle conveyer pipe, at least one the outside of locating wheel is equipped with the drive end that it carries out the rotation of the spanner drive of being convenient for.
Furthermore, in the high-rise building waste crushing and conveying device, the sliding chute is of a circular truncated cone-shaped structure with a wide upper part and a narrow lower part.
Furthermore, in the high-rise building waste crushing and conveying device, the vertical plate is provided with a guide hole matched with the movable rod.
Furthermore, in the high-rise building waste crushing and conveying device, the horizontal positions and the heights of the cutter parts of the two opposite multi-tooth cutters are staggered.
Furthermore, in the high-rise building waste crushing and conveying device, the crushing box is fixed in an elevator shaft corresponding to a construction floor.
Further, in the high-rise building waste crushing and conveying device, the horizontal length of the rectangular conveying pipe is equal to the horizontal width of the elevator shaft, and the horizontal width is 20-30 cm.
Furthermore, in the high-rise building waste crushing and conveying device, the inner end of the dust suction pipe is provided with the hemispherical screen, and the outer end of the dust suction pipe is provided with the hose connector.
Furthermore, in the high-rise building waste crushing and conveying device, the driven wheel and the positioning wheel are respectively and uniformly provided with a tooth part on the periphery, and the inner side of the transmission belt is provided with a tooth groove meshed with the tooth part.
The invention has the beneficial effects that:
1. according to the invention, the waste is quickly crushed before being conveyed by the crushing box, the head of the crushed waste is smaller, and the dredging component cannot be damaged due to impact force generated by gravitational potential energy of the waste in the conveying process.
2. The buffer spring is arranged on the outer side of the conveying pipe joint, and the buffer spring is used for absorbing the impact force of waste materials, so that the service life of the conveying pipe joint is prolonged.
3. According to the invention, the dust collection pipes penetrate through the crushing box and the conveying pipe sections, so that dust generated in the conveying process can be effectively removed, the occurrence of raised dust is avoided, and the environment-friendly effect is good.
4. According to the invention, the dredging component is arranged in the conveying pipe joint, when the blockage phenomenon occurs, the blockage can be quickly eliminated only by driving the rotating shaft to rotate by using the wrench outside the conveying pipe joint, the conveying pipe joint does not need to be disassembled, and the operation is convenient.
Of course, it is not necessary for any one product that embodies the invention to achieve all of the above advantages simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a high-rise building waste crushing and conveying device according to the present invention;
FIG. 2 is a schematic view of the internal structure of a rectangular duct according to the present invention;
FIG. 3 is a schematic structural view of a pull through assembly of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-a crushing box, 2-a material guide block, 3-a crushing roller, 4-an ear seat, 5-a vertical plate, 6-a clapboard, 7-a hydraulic push rod, 8-a movable rod, 9-a multi-tooth cutter, 10-a coarse material discharge hole, 11-a rectangular conveying pipe, 12-an upper end plate, 13-a lower end plate, 14-a buffer spring, 15-an outer cover, 16-a sieve plate, 17-a dust suction pipe, 18-a dredging component, 181-a rotating shaft, 182-a thorn rod, 183-a driven wheel, 184-a driving belt, 185-a positioning wheel, 186-a positioning block, 187-a driving end head and 19-a dust guide opening.
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. 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.
Referring to fig. 1-3, the present embodiment is a high-rise building waste crushing and conveying device, which includes a crushing box 1 and a plurality of conveying pipe sections fixed at the lower end of the crushing box, wherein the crushing box 1 is fixed at a construction floor, and the conveying pipe sections are laid down along an elevator shaft from the construction floor.
The opening at the upper end of the crushing box 1 is provided with a material guide block 2, a material sliding groove is arranged inside the material guide block 2, and the material sliding groove is of a round table-shaped structure with a wide upper part and a narrow lower part. The bottom of chute is equipped with two relative pivoted crushing rollers 3, and crushing roller 3 passes through ear seat 4 to be fixed on riser 5, and the lower extreme of riser 5 is fixed on baffle 6. Two rows of hydraulic push rods 7 are symmetrically fixed on the outer side of the vertical plate 5 of the partition plate 6, a multi-tooth cutter 9 is fixed on a movable rod 8 of each hydraulic push rod 7, and coarse material discharge holes 10 are uniformly formed in the middle plate body of the partition plate 6. The vertical plate 5 is provided with a guide hole matched with the movable rod 8. The horizontal positions and the heights of the cutter parts of the two opposite multi-tooth cutters 9 are staggered.
The conveying pipe joint comprises a rectangular conveying pipe 11, an upper end plate 12 and a lower end plate 13 are fixed at two ends of the rectangular conveying pipe 11, and the rectangular conveying pipe 11, the upper end plate 12 and the lower end plate 13 are made of stainless steel materials. Two adjacent rectangular conveying pipes 11 are fixed by bolts. Rectangular conveyer pipe 11 is located the upper end plate 12 of two wide limit portions departments, lower end plate 13 is connected through a plurality of buffer spring 14, rectangular conveyer pipe 11 is located a narrow limit portion and has seted up and lead dirt mouth 19, the outside of leading dirt mouth 19 is fixed with dustcoat 15, dustcoat 15 is close to and leads dirt 19 department and be fixed with sieve 16, dust absorption pipe 17 is worn to be equipped with by the outer terminal plate of dustcoat 15, dust absorption pipe 17 passes through the hose and is connected with the dust remover, the optional miniature dust remover that strains of dust remover. The crushing box 1 is fixed in an elevator shaft corresponding to a construction floor. The horizontal length of the rectangular conveying pipe 11 is equal to the horizontal width of the elevator shaft, and the horizontal width is 20-30 cm. The inner end of the dust suction pipe 17 is provided with a hemispherical screen, and the outer end is provided with a hose connector.
The rectangular delivery pipe 11 is provided with a dredging component 18 at the other narrow side part and in the inner cavity. The dredging component 18 comprises a plurality of rotating shafts 181, the rotating shafts 181 penetrate through narrow side plates of the rectangular conveying pipe 11, the rotating shafts 181 are uniformly provided with pricking rods 182 on the shaft bodies in the rectangular conveying pipe 11, and the end parts outside the rectangular conveying pipe 11 are fixedly provided with driven wheels 183. The driven wheel 183 is in transmission connection with positioning wheels 185 through a transmission belt 184 sleeved on the surface of the driven wheel, a support rod on the inner side of each positioning wheel 185 is limited in a positioning block 186 in a rotating manner, each positioning block 186 is fixed on the outer wall of the narrow side plate of the rectangular conveying pipe 11, and a driving end 187 which is convenient for a wrench to drive the positioning wheels 185 to rotate is arranged on the outer side of at least one positioning wheel 185. The driven wheel 183 and the positioning wheel 185 have teeth uniformly distributed on their outer peripheries, and the driving belt 184 has tooth grooves engaged with the teeth.
One specific application of this embodiment is: this embodiment carries out quick breakage to the waste material through setting up broken case 1 before carrying, and broken back waste material piece head is less, and the waste material can not lead to dredging assembly 18 to damage because of gravitational potential energy produces the impact force in the data send process. In this embodiment, the buffer spring 14 is disposed outside the conveying pipe joint, and the buffer spring 14 is used to absorb the impact force of the waste material, so as to prolong the service life of the conveying pipe joint. Wear to be equipped with the dust absorption pipe in broken case 1 and each conveying pipe festival in this embodiment, the dust that can produce in the transportation process carries out effectual cleaing away, avoids the emergence of raise dust, and environmental protection is effectual. The inside of conveying pipe section is equipped with mediation subassembly 18 in this embodiment, when the jam phenomenon appears, only needs to utilize spanner drive pivot 181 and thorn pole 182 rotatory in conveying pipe section outside, can eliminate the jam fast, need not to dismantle conveying pipe section, convenient operation.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides a broken conveyor of high-rise building waste material which characterized in that: the crushing box is fixed on a construction floor, and the conveying pipe sections are laid downwards along an elevator shaft from the construction floor;
a material guide block is arranged at an opening at the upper end of the crushing box, a chute is arranged inside the material guide block, two crushing rollers which rotate relatively are arranged at the bottom end of the chute, the crushing rollers are fixed on a vertical plate through lug seats, the lower end of the vertical plate is fixed on a partition plate, a hydraulic push rod is fixed on the outer side of the vertical plate, a multi-tooth cutter is fixed on a movable rod of the hydraulic push rod, and a coarse material discharge hole is uniformly formed in the middle plate body of the partition plate;
the conveying pipe joint comprises a rectangular conveying pipe, an upper end plate and a lower end plate are fixed at two ends of the rectangular conveying pipe, the upper end plate and the lower end plate of the rectangular conveying pipe, which are positioned at two wide side parts, are connected through a plurality of buffer springs, a dust guide port is formed in one narrow side part of the rectangular conveying pipe, an outer cover is fixed on the outer side of the dust guide port, a sieve plate is fixed on the outer cover, which is close to the dust guide port, a dust suction pipe penetrates through the outer end plate of the outer cover, the dust suction pipe is connected with a dust remover through a hose, and a dredging component is arranged in the other narrow side part of the rectangular;
the mediation subassembly includes a plurality of pivots, the pivot passes in the narrow limit portion of rectangle conveyer pipe, the pivot is located the axis body equipartition thorn pole in the rectangle conveyer pipe, and the end fixing that is located the rectangle conveyer pipe outside is equipped with from the driving wheel, establish drive belt and locating wheel transmission on its surface from the driving wheel through the cover and be connected, the inboard bracing piece of locating wheel rotates the restriction in the locating piece, the locating piece is fixed at the narrow limit portion outer wall of rectangle conveyer pipe, at least one the outside of locating wheel is equipped with the drive end that it carries out the rotation of the spanner drive of being convenient for.
2. The high-rise building waste crushing and conveying device according to claim 1, characterized in that: the material sliding groove is of a round table-shaped structure with a wide upper part and a narrow lower part.
3. The high-rise building waste crushing and conveying device according to claim 1, characterized in that: the vertical plate is provided with a guide hole matched with the movable rod.
4. The high-rise building waste crushing and conveying device according to claim 1, characterized in that: the horizontal positions and the heights of the cutter parts of the two opposite multi-tooth cutters are staggered.
5. The high-rise building waste crushing and conveying device according to claim 1, characterized in that: the crushing box is fixed in an elevator shaft corresponding to a construction floor.
6. The high-rise building waste crushing and conveying device according to claim 5, characterized in that: the horizontal length of the rectangular conveying pipe is equal to the horizontal width of the elevator shaft, and the horizontal width is 20-30 cm.
7. The high-rise building waste crushing and conveying device according to claim 1, characterized in that: the inner end of the dust collection pipe is provided with a hemispherical screen, and the outer end of the dust collection pipe is provided with a hose connector.
8. The high-rise building waste crushing and conveying device according to claim 1, characterized in that: tooth parts are uniformly distributed on the peripheries of the driven wheel and the positioning wheel, and tooth grooves meshed with the tooth parts are formed in the inner side of the driving belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910375996.7A CN110092134B (en) | 2019-05-07 | 2019-05-07 | Broken conveyor of high-rise building waste material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910375996.7A CN110092134B (en) | 2019-05-07 | 2019-05-07 | Broken conveyor of high-rise building waste material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110092134A CN110092134A (en) | 2019-08-06 |
| CN110092134B true CN110092134B (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910375996.7A Expired - Fee Related CN110092134B (en) | 2019-05-07 | 2019-05-07 | Broken conveyor of high-rise building waste material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110092134B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111570049B (en) * | 2020-06-22 | 2021-06-04 | 卢海鹏 | Building engineering construction waste material environmental protection treatment facility |
| CN112138769A (en) * | 2020-09-22 | 2020-12-29 | 山西省工业设备安装集团有限公司 | Building rubbish reducing mechanism for construction |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0881063A (en) * | 1994-09-14 | 1996-03-26 | Sumitomo Metal Ind Ltd | Powder/grain supply device in vertical roller mill |
| CN201559952U (en) * | 2009-08-19 | 2010-08-25 | 成都正大有限公司 | Material chute pipe |
| CN205032209U (en) * | 2015-08-22 | 2016-02-17 | 王坤明 | High -efficient environmental protection ore crusher |
| CN206793867U (en) * | 2017-06-13 | 2017-12-26 | 丁继来 | A kind of building waste Environmental protective classified device |
| CN107774207A (en) * | 2017-12-04 | 2018-03-09 | 马鞍山瑞琪机械设备制造有限公司 | A kind of packed tower with dredging function |
| CN207722939U (en) * | 2017-12-07 | 2018-08-14 | 绵阳钢猫科技有限公司 | A kind of cement pulverizer |
| CN208150259U (en) * | 2018-03-22 | 2018-11-27 | 新乡市振英机械设备有限公司 | A kind of feature of environmental protection building waste conveying device |
| CN208679290U (en) * | 2018-07-05 | 2019-04-02 | 广东盛尔建设有限公司 | A kind of construction stone pulverizing device |
-
2019
- 2019-05-07 CN CN201910375996.7A patent/CN110092134B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0881063A (en) * | 1994-09-14 | 1996-03-26 | Sumitomo Metal Ind Ltd | Powder/grain supply device in vertical roller mill |
| CN201559952U (en) * | 2009-08-19 | 2010-08-25 | 成都正大有限公司 | Material chute pipe |
| CN205032209U (en) * | 2015-08-22 | 2016-02-17 | 王坤明 | High -efficient environmental protection ore crusher |
| CN206793867U (en) * | 2017-06-13 | 2017-12-26 | 丁继来 | A kind of building waste Environmental protective classified device |
| CN107774207A (en) * | 2017-12-04 | 2018-03-09 | 马鞍山瑞琪机械设备制造有限公司 | A kind of packed tower with dredging function |
| CN207722939U (en) * | 2017-12-07 | 2018-08-14 | 绵阳钢猫科技有限公司 | A kind of cement pulverizer |
| CN208150259U (en) * | 2018-03-22 | 2018-11-27 | 新乡市振英机械设备有限公司 | A kind of feature of environmental protection building waste conveying device |
| CN208679290U (en) * | 2018-07-05 | 2019-04-02 | 广东盛尔建设有限公司 | A kind of construction stone pulverizing device |
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| CN110092134A (en) | 2019-08-06 |
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