CN114832925A - Vertical shaft type impact crusher for stone crushing and using method thereof - Google Patents
Vertical shaft type impact crusher for stone crushing and using method thereof Download PDFInfo
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- CN114832925A CN114832925A CN202210480532.4A CN202210480532A CN114832925A CN 114832925 A CN114832925 A CN 114832925A CN 202210480532 A CN202210480532 A CN 202210480532A CN 114832925 A CN114832925 A CN 114832925A
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- crushing
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- blanking
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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
- B02C19/00—Other disintegrating devices or methods
- B02C19/0012—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain)
- B02C19/0018—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain) using a rotor accelerating the materials centrifugally against a circumferential breaking surface
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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
- B02C21/00—Disintegrating plant with or without drying of the material
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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
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
- B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention discloses a vertical shaft type impact crusher for stone crushing, which comprises a crushing chamber and a rotor, wherein a blanking chamber is arranged at the bottom of the crushing chamber, and a re-crushing recovery mechanism is arranged in the blanking chamber; broken recovery mechanism is including rotating the hollow shaft of connection in blanking indoor portion again, and the externally mounted of hollow shaft has helical blade, and the sleeve pipe of looks adaptation is installed to one side that the rotor is close to helical blade, and the fixed plate is installed to blanking indoor inboard, and a plurality of broken stamp stems are installed to the upside of fixed plate, and the spout has been seted up to blanking indoor inside wall, and the internally mounted of spout has the spring, and the slider with spout looks adaptation is installed on the top of spring. According to the invention, through the matched use of the filter plate, the sliding chute, the spring, the sliding block, the helical blade and the feed back port, crushed stone can be screened, the operation is simpler, the condition that the crushed stone needs to be screened again after being crushed is avoided, meanwhile, the blockage of the stone at the feed discharge port can be prevented, and the use effect of the stone is improved.
Description
Technical Field
The invention relates to the technical field of vertical shaft type impact crushers, in particular to a vertical shaft type impact crusher for stone crushing and a using method thereof.
Background
The vertical shaft type impact crusher mainly adopts a belt to drive a central vertical shaft to enable a flat component provided with a vertical guide device to rotate. The rotor ejects the material in a horizontal direction onto the impact plane in the crushing chamber by centrifugal force at a very high rotational speed. Has the characteristics of stable and reliable work, convenient maintenance, high sand making rate and the like. The product has cubic particle shape and low needle sheet content, is particularly suitable for stone shaping and machine-made sand production, and can be widely applied to fine crushing operation in the industries of hydropower, highways, buildings, cement, metal mines and the like.
The existing vertical shaft type impact crusher can only crush once, the crushing effect of stones is general, some unbroken stones may exist, wherein larger stones can be accumulated in a crushing chamber to block a discharge port, the stones discharged need to be screened again, the operation is complicated, the stone crushing efficiency is reduced, and the using effect of the stones is also reduced, so that the vertical shaft type impact crusher for processing broken stones and the using method thereof are needed.
Disclosure of Invention
The invention aims to solve the defects that the crushing effect is general, a discharge port is easy to block, the operation is more complicated, the stone crushing efficiency is lower and the using effect of stones is influenced in the prior art, and provides a vertical shaft type impact crusher for stone crushing and a using method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a vertical shaft type impact crusher for stone crushing comprises a crushing chamber and a rotor, wherein a blanking chamber is arranged at the bottom of the crushing chamber, and a re-crushing recovery mechanism is arranged in the blanking chamber;
the broken hollow shaft of connecting in blanking indoor portion is including rotating to the broken mechanism of retrieving again, the externally mounted of hollow shaft has helical blade, the sleeve pipe of looks adaptation is installed to one side that the rotor is close to helical blade, the fixed plate is installed to the inboard of blanking room, a plurality of broken poles of pounding are installed to the upside of fixed plate, the spout has been seted up to the inside wall of blanking room, the internally mounted of spout has the spring, the slider with spout looks adaptation is installed on the top of spring, the filter is installed to one side that the slider is close to the fixed plate, the inside of broken room is provided with broken subassembly.
Preferably, the size of the crushing chamber is larger than that of the blanking chamber, a mounting ring is mounted on the outer portion of the blanking chamber, the mounting ring is located at the bottom of the blanking chamber, and a plurality of bolt holes are formed in the outer portion of the mounting ring.
Preferably, the crushing assembly comprises a main shaft which is rotatably connected inside the crushing chamber, the main shaft penetrates from the inside of the crushing chamber to the side far away from the blanking chamber, and a belt pulley is installed at one end of the main shaft far away from the blanking chamber.
Preferably, the rotor rotates to be connected in the outside of main shaft, the rotor is located the inside of crushing room, a plurality of material throwing openings have been seted up to the outside of rotor, a plurality of feed back openings have been seted up to the bottom of rotor, one side that the crushing room is close to the rotor is the slope setting, one side that the crushing room is close to the rotor is installed a plurality of crushing boards.
Preferably, a feeding bin is mounted outside the crushing chamber, the feeding bin penetrates from the outside of the crushing chamber to the upper side of the rotor, and a hole matched with the feeding bin is formed in the outside of the crushing chamber.
Preferably, the bin outlet has been seted up to one side that the crushing room was kept away from to the blanking chamber, one side that the blanking chamber is close to the bin outlet is the slope setting, the internally mounted of bin outlet has the branch flitch, the both sides of dividing the flitch are the slope setting.
Preferably, the size of feed back mouth is less than helical blade's size, the size of filter outside hole and the size looks adaptation of broken tamping bar, the filter is parallel to each other with the fixed plate, spout and slider all are cyclic annular setting.
A use method of a vertical shaft type impact crusher for stone crushing comprises the following steps:
firstly, mounting a vertical shaft type impact crusher on a fixed frame through a mounting ring, fixing the vertical shaft type impact crusher by adopting bolts, and then connecting an external driving device with a belt pulley in a transmission manner through a belt;
driving the driving belt pulley to rotate through a driving device, and further driving the rotor to rotate through the main shaft;
thirdly, putting the stone to be crushed into the rotor rotating at a high speed through the feeding bin, throwing the stone in the rotor out through the throwing port under the action of centrifugal force, and impacting the stone on the inner side of the crushing chamber or the crushing plate to crush the stone;
step four, the crushed stone falls onto the filter plate, the spring drives the filter plate to shake under the action of gravity of the stone, and meanwhile, the crushing tamping rods on the fixed plate can crush the stone on the filter plate again;
step five, the stones meeting the crushing requirements fall to the bottom of the blanking chamber through the filter plate and are discharged through the discharge port, and the stones not meeting the requirements move to one side of the helical blade under the shaking action of the filter plate;
and step six, the rotation of the helical blades drives the stone to move upwards, and finally the stone returns to the inside of the rotor through the feed back hole to be crushed again.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the filtering plate, the sliding groove, the spring, the sliding block, the helical blade and the feed back port are matched for use, so that crushed stone can be screened, the operation is simpler, the situation that the crushed stone needs to be screened again after being crushed is avoided, meanwhile, the blocking of the stone at the feed discharge port can be prevented, and the using effect of the stone is improved.
2. According to the invention, through the matching use of the filter plate, the fixing plate and the crushing tamper, stone can be crushed again in the screening process, meanwhile, the filter plate can be prevented from being blocked by the stone, the working efficiency of stone crushing is improved, the energy consumption of stone crushing is reduced, and the energy-saving and environment-friendly effects are achieved.
Drawings
FIG. 1 is a schematic perspective view of a vertical shaft impact crusher for stone crushing according to the present invention;
FIG. 2 is a schematic view of the internal structure of the crushing chamber of the present invention;
FIG. 3 is a schematic view of the structure of the rotor of the present invention;
FIG. 4 is a schematic view of the internal structure of the blanking chamber of the present invention;
FIG. 5 is a schematic view of a partial cross-sectional structure of the blanking chamber of the present invention;
fig. 6 is an enlarged view of a structure shown in fig. 4.
In the figure: 1. a crushing chamber; 2. a blanking chamber; 3. a mounting ring; 4. a main shaft; 5. a belt pulley; 6. a rotor; 7. a feeding bin; 8. throwing a material port; 9. a feed back port; 10. a breaker plate; 11. a hollow shaft; 12. a helical blade; 13. a discharge outlet; 14. a material distributing plate; 15. a sleeve; 16. a fixing plate; 17. crushing the tamper; 18. a chute; 19. a spring; 20. a slider; 21. a filter plate.
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.
Example one
As shown in fig. 2-6, the vertical shaft impact crusher for stone crushing provided by the invention comprises a crushing chamber 1 and a rotor 6, wherein a blanking chamber 2 is installed at the bottom of the crushing chamber 1, and a re-crushing recovery mechanism is arranged inside the blanking chamber 2;
the re-crushing recovery mechanism comprises a hollow shaft 11 which is rotatably connected inside a blanking chamber 2, a helical blade 12 is mounted outside the hollow shaft 11, a sleeve 15 which is matched with one side of a rotor 6 close to the helical blade 12 is mounted on one side of the rotor, a fixed plate 16 is mounted on the inner side of the blanking chamber 2, a plurality of crushing tamping rods 17 are mounted on the upper side of the fixed plate 16, a sliding groove 18 is formed in the inner side wall of the blanking chamber 2, a spring 19 is mounted inside the sliding groove 18, a sliding block 20 which is matched with the sliding groove 18 is mounted at the top end of the spring 19, a filtering plate 21 is mounted on one side of the sliding block 20 close to the fixed plate 16, and a crushing assembly is arranged inside the crushing chamber 1;
the size of crushing room 1 is greater than the size of blanking room 2, and the externally mounted of blanking room 2 has collar 3, and collar 3 is located the bottom of blanking room 2 to a plurality of bolt holes have been seted up to collar 3's outside, and the size of feed back mouth 9 is less than helical blade 12's size, the size of filter 21 outside hole and the size looks adaptation of broken pole 17 of pounding, and filter 21 is parallel to each other with fixed plate 16, and spout 18 and slider 20 all are cyclic annular setting.
The working principle of the vertical shaft type impact crusher for stone crushing based on the first embodiment is that when the vertical shaft type impact crusher works, crushed stone falls into a blanking chamber 2 from the inside of a crushing chamber 1, as a fixed plate 16 is arranged inside the blanking chamber 2, a plurality of crushing tamping rods 17 are arranged outside the fixed plate 16, an annular sliding groove 18 is formed in the inner side wall of the blanking chamber 2, a sliding block 20 is connected inside the sliding groove 18 in a sliding manner, a plurality of springs 19 are jointly arranged between the sliding block 20 and the sliding groove 18, a filter plate 21 parallel to the fixed plate 16 is arranged outside the sliding block 20, external holes of the filter plate 21 are matched with the crushing tamping rods 17, namely when the crushed stone falls onto the filter plate 21, the filter plate 21 is driven to shake up and down in the blanking chamber 2 under the action of the self gravity of the stone and the springs 19, and when the filter plate 21 moves downwards, the crushing tamping rods 17 crush the stone on the filter plate 21 again through the external holes of the filter plate 21, and when shaking, the stone material meeting the crushing requirement can fall through the holes outside the filter plate 21;
as the interior of the blanking chamber 2 is rotatably connected with the hollow shaft 11, the exterior of the hollow shaft 11 is provided with the helical blade 12, and the side of the rotor 6 close to the helical blade 12 is provided with a matched sleeve 15, at the moment, the stone which does not meet the crushing requirement falls onto the helical blade 12 through a filter plate 21, under the rotation of the helical blade 12, the stone is driven to move upwards in the sleeve 15 and enter the rotor 6 through the feed back port 9 to be crushed again, the process is repeated, the stone crushing effect is better, the operation is simpler, the condition that the screening needs to be performed again after the stone is crushed is avoided, meanwhile, the stone can be prevented from being blocked at the discharge hole 13, the using effect of the stone is improved, meanwhile, the stone can be prevented from blocking the filter plate 21, the working efficiency of stone crushing is improved, meanwhile, the energy consumption of stone crushing is also reduced, and the stone crusher is more energy-saving and environment-friendly.
Example two
As shown in fig. 1-3, based on the first embodiment, the crushing assembly includes a main shaft 4 rotatably connected inside a crushing chamber 1, the main shaft 4 penetrates from the inside of the crushing chamber 1 to a side far away from a blanking chamber 2, a belt pulley 5 is installed at one end of the main shaft 4 far away from the blanking chamber 2, a rotor 6 is rotatably connected outside the main shaft 4, the rotor 6 is located inside the crushing chamber 1, a plurality of material throwing ports 8 are formed in the outside of the rotor 6, a plurality of material returning ports 9 are formed in the bottom of the rotor 6, one side of the crushing chamber 1 close to the rotor 6 is obliquely arranged, and a plurality of crushing plates 10 are installed at one side of the crushing chamber 1 close to the rotor 6, so as to facilitate falling of stones;
the externally mounted of broken room 1 has feeding storehouse 7, and feeding storehouse 7 runs through to the top of rotor 6 by the outside of broken room 1, and the hole with 7 looks adaptations of feeding storehouse is seted up to the outside of broken room 1, and bin outlet 13 has been seted up to one side that broken room 1 was kept away from to blanking room 2, and one side that blanking room 2 is close to bin outlet 13 is the slope setting, and the internally mounted of bin outlet 13 has branch flitch 14, and the both sides that divide flitch 14 are the slope setting.
In this embodiment, at first drive belt pulley 5 and the high-speed rotation of main shaft 4 through outside drive arrangement, the inside of rotor 6 is discharged through feeding storehouse 7 to the building stones that will need to be broken, the building stones inside rotor 6 can throw away through getting rid of material mouth 8 under the effect of centrifugal force, the striking is on the inside wall and the broken board 10 of broken room 1, carry out the breakage to the building stones, building stones after the breakage then drop to in the blanking room 2, advance filter 21 and filter, discharge through the bin outlet 13 of blanking room 2 bottoms finally, under the effect of branch flitch 14, can reduce the jam of building stones in bin outlet 13 department.
EXAMPLE III
The invention also provides a using method of the vertical shaft type impact crusher for stone crushing, which comprises the following steps:
firstly, a vertical shaft type impact crusher is arranged on a fixed frame through an installation ring 3 and is fixed by bolts, and then an external driving device is in transmission connection with a belt pulley 5 through a belt;
driving a driving belt pulley 5 to rotate through a driving device, and further driving a rotor 6 to rotate through a main shaft 4;
thirdly, stone materials to be crushed are placed into the rotor 6 rotating at a high speed through the feeding bin 7, the stone materials in the rotor 6 are thrown out through the throwing port 8 under the action of centrifugal force and impact the inner side of the crushing chamber 1 or the crushing plate 10 to crush the stone materials;
step four, the crushed stone falls onto the filter plate 21, the spring 19 drives the filter plate 21 to shake under the gravity action of the stone, and the crushing tamper 17 on the fixed plate 16 can crush the stone on the filter plate 21 again;
fifthly, the stones meeting the crushing requirements fall to the bottom of the blanking chamber 2 through the filter plate 21 and are discharged through the discharge port 13, and the stones not meeting the requirements move to one side of the helical blade 12 under the shaking action of the filter plate 21;
and step six, the rotation of the helical blades 12 drives the stone to move upwards, and finally, the stone returns to the inside of the rotor 6 through the feed back port 9 to be crushed again.
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 (8)
1. A vertical shaft type impact crusher for stone crushing comprises a crushing chamber (1) and a rotor (6), and is characterized in that a blanking chamber (2) is installed at the bottom of the crushing chamber (1), and a re-crushing recovery mechanism is arranged in the blanking chamber (2);
the re-crushing recovery mechanism comprises a hollow shaft (11) which is rotatably connected to the inside of a blanking chamber (2), wherein a spiral blade (12) is arranged outside the hollow shaft (11), one side of a rotor (6) close to the spiral blade (12) is provided with a sleeve (15) matched with the spiral blade, a fixing plate (16) is arranged on the inner side of the blanking chamber (2), a plurality of crushing tamping rods (17) are arranged on the upper side of the fixing plate (16), a sliding groove (18) is formed in the inner side wall of the blanking chamber (2), a spring (19) is arranged inside the sliding groove (18), a sliding block (20) matched with the sliding groove (18) is arranged at the top end of the spring (19), a filtering plate (21) is arranged on one side of the sliding block (20) close to the fixing plate (16), and a crushing assembly is arranged inside the blanking chamber (1).
2. A vertical shaft impact crusher for macadam processing according to claim 1, characterized in that the size of the crushing chamber (1) is larger than that of the blanking chamber (2), a mounting ring (3) is mounted outside the blanking chamber (2), the mounting ring (3) is located at the bottom of the blanking chamber (2), and a plurality of bolt holes are opened on the outside of the mounting ring (3).
3. A vertical shaft impact crusher for stone crushing according to claim 1, characterized in that the crushing unit comprises a main shaft (4) rotatably connected inside the crushing chamber (1), the main shaft (4) extends from the inside of the crushing chamber (1) to the side far from the blanking chamber (2), and a belt pulley (5) is mounted at the end of the main shaft (4) far from the blanking chamber (2).
4. The vertical shaft type impact crusher for the stone crushing processing as claimed in claim 3, wherein the rotor (6) is rotatably connected to the outside of the main shaft (4), the rotor (6) is located inside the crushing chamber (1), a plurality of material throwing openings (8) are formed in the outside of the rotor (6), a plurality of material returning openings (9) are formed in the bottom of the rotor (6), one side of the crushing chamber (1) close to the rotor (6) is obliquely arranged, and a plurality of crushing plates (10) are installed on one side of the crushing chamber (1) close to the rotor (6).
5. The vertical shaft impact crusher for stone crushing according to claim 4, characterized in that a feeding bin (7) is installed outside the crushing chamber (1), the feeding bin (7) penetrates from the outside of the crushing chamber (1) to the upper part of the rotor (6), and a hole matched with the feeding bin (7) is opened outside the crushing chamber (1).
6. The vertical shaft impact crusher for broken stone processing according to claim 1, characterized in that a discharge opening (13) is opened on one side of the blanking chamber (2) far away from the crushing chamber (1), one side of the blanking chamber (2) close to the discharge opening (13) is arranged in an inclined manner, a material distributing plate (14) is installed inside the discharge opening (13), and two sides of the material distributing plate (14) are arranged in an inclined manner.
7. The vertical shaft impact crusher for stone crushing according to claim 1, wherein the size of the feed back opening (9) is smaller than that of the helical blade (12), the size of the external hole of the filter plate (21) is matched with that of the crushing tamper (17), the filter plate (21) and the fixed plate (16) are parallel to each other, and the sliding chute (18) and the sliding block (20) are both arranged in a ring shape.
8. The use method of the vertical shaft type impact crusher for stone crushing is characterized by comprising the following steps:
firstly, a vertical shaft type impact crusher is arranged on a fixed frame through the mounting ring (3), and is fixed by bolts, and then an external driving device is in transmission connection with the belt pulley (5) through a belt;
driving the driving belt pulley (5) to rotate through a driving device, and further driving the rotor (6) to rotate through the main shaft (4);
thirdly, stone to be crushed is placed into the rotor (6) rotating at a high speed through the feeding bin (7), the stone in the rotor (6) is thrown out through the throwing port (8) under the action of centrifugal force and impacts the inner side of the crushing chamber (1) or the crushing plate (10) to crush the stone;
step four, the crushed stone falls onto the filter plate (21), the spring (19) drives the filter plate (21) to shake under the action of the gravity of the stone, and meanwhile, the crushing tamping rod (17) on the fixing plate (16) can crush the stone on the filter plate (21) again;
fifthly, stones meeting the crushing requirements fall to the bottom of the blanking chamber (2) through the filter plate (21) and are discharged through the discharge opening (13), and stones not meeting the requirements move to one side of the helical blade (12) under the shaking action of the filter plate (21);
and step six, the rotation of the spiral blade (12) drives the stone to move upwards, and finally the stone returns to the inside of the rotor (6) through the feed back port (9) to be crushed again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210480532.4A CN114832925A (en) | 2022-05-05 | 2022-05-05 | Vertical shaft type impact crusher for stone crushing and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210480532.4A CN114832925A (en) | 2022-05-05 | 2022-05-05 | Vertical shaft type impact crusher for stone crushing and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114832925A true CN114832925A (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210480532.4A Pending CN114832925A (en) | 2022-05-05 | 2022-05-05 | Vertical shaft type impact crusher for stone crushing and using method thereof |
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| CN (1) | CN114832925A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116020636A (en) * | 2022-10-26 | 2023-04-28 | 湖南昌宏建设工程有限公司 | Stone crushing device for building construction and use method thereof |
-
2022
- 2022-05-05 CN CN202210480532.4A patent/CN114832925A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116020636A (en) * | 2022-10-26 | 2023-04-28 | 湖南昌宏建设工程有限公司 | Stone crushing device for building construction and use method thereof |
| CN116020636B (en) * | 2022-10-26 | 2023-11-03 | 湖南昌宏建设工程有限公司 | Stone crushing device for building construction and use method thereof |
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