Intelligent stone crusher for civil engineering

By designing an intelligent stone crusher, using a multi-directional crushing mechanism and automatic control system, the problem of stone accumulation in traditional stone crushers is solved, and the rapid, quantitative crushing and collection of stones is achieved.

CN119909835AInactive Publication Date: 2025-05-02TONGREN UNIV
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Patent Information

Application Number
CN202510224667.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-27
Publication Date
2025-05-02
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

When traditional stone crushers are used, excessive stone accumulation causes the stone crusher to fail to break quickly, affecting normal use.

Method used

An intelligent stone crusher is designed, including a shell, a first crushing mechanism, a second crushing mechanism, an automatic discharge mechanism and an automatic closing mechanism. The first crushing mechanism and the second crushing mechanism crush the stones in multiple directions, and the automatic discharge mechanism releases the stones quantitatively according to the operating state of the crushing mechanism, and the automatic closing mechanism is used to prevent the stones from being piled up.

Benefits of technology

It realizes rapid and quantitative crushing and collection of stones, avoids stone accumulation, and ensures the normal use of the stone crusher.

✦ Generated by Eureka AI based on patent content.

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Abstract

The intelligent stone crusher comprises a shell, a first crushing mechanism is arranged in the shell, a second crushing mechanism is arranged in the first crushing mechanism, an automatic discharging mechanism is located on the outer side of the shell and fixedly connected with the shell, and the automatic discharging mechanism releases stones according to the running state of the first crushing mechanism; the automatic closing mechanism is located in the shell and fixedly connected with the bottom of an inner cavity of the shell. A top block is driven by a motor to continuously move up and down, the top block moves up and down to enable a rack to continuously move up and down, in this way, a first gear drives a blocking plate to continuously rotate, and the blocking plate rotates in a conveying pipe to enable the space, capable of conveying stones, of the conveying pipe to continuously change; and the change is matched with the up-down movement of the first crushing cover, so that after the first crushing cover finishes primary crushing, stone blocks are put into the conveying pipe once, and quantitative discharge in a fixed state is effectively realized.
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Description

Technical Field

[0001] The present invention relates to the field of stone crushing in civil engineering, and in particular to an intelligent stone crusher for civil engineering. Background Art

[0002] Stone crushers are commonly used in civil engineering to break large stones or rocks into smaller particles. They play an important role in road construction, building construction, mining and other fields. The most common types of stone crushers include jaw crushers, which crush materials through the compression force between two jaws. One jaw is fixed, and the other is movable. When the movable jaw moves, the material is squeezed and crushed. Impact crushers use a high-speed rotating rotor to strike the material against a fixed crushing plate, thereby crushing the material. They rely mainly on impact force rather than extrusion force to crush the material. Cone crushers apply pressure to the material through a conical crushing chamber, where the material is squeezed and sheared, achieving the desired crushing effect.

[0003] However, when using this type of traditional crusher, it is necessary to use transportation equipment to put the stones into the crusher. Since the crushing efficiency of the crusher is limited, and the transportation speed of the transportation equipment is not always synchronized with the crusher, there may be too many stones and the crusher cannot crush them quickly. Over time, too many stones may accumulate in the storage space of the crusher, which is not conducive to the normal use of the crusher. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent stone crusher for civil engineering to solve the above technical problems.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] An intelligent stone crusher for civil engineering, comprising a housing, a first crushing mechanism disposed inside the housing, a second crushing mechanism disposed inside the first crushing mechanism, the first crushing mechanism and the second crushing mechanism being used in combination to crush stones in multiple directions;

[0007] An automatic discharge mechanism is located outside the shell and is fixedly connected to the shell, and releases stones according to the operating state of the first crushing mechanism;

[0008] The automatic closing mechanism is located inside the shell and is fixedly connected to the bottom of the shell cavity. The automatic closing mechanism is used to close the automatic discharging mechanism.

[0009] Preferably, the first pulverizing mechanism includes a protective cover, the protective cover is located inside the housing, a second connecting rod is fixedly connected to the protective cover, and the second connecting rod is fixedly connected to the housing;

[0010] A motor is fixedly installed inside the protective cover, a reciprocating screw is fixedly connected to the power output shaft of the motor, a top block is threadedly connected to the reciprocating screw, an auxiliary rod is slidably connected to the top block, the auxiliary rod is fixedly connected to the protective cover, and a driving column is fixedly connected to the top of the top block;

[0011] A ball is provided on the auxiliary rod for rolling.

[0012] Preferably, the first pulverizing mechanism further includes a second rotating shaft, and the second rotating shaft is fixedly connected to the reciprocating screw;

[0013] Two limit plates are fixedly connected to the second rotating shaft, a limit bar is fixedly connected between the two limit plates, a first crushing cover is slidably connected to the limit bar and the second rotating shaft, a plurality of through holes are opened at the bottom of the first crushing cover, and a plurality of crushing cones are installed on the inner wall of the first crushing cover.

[0014] Preferably, the second crushing mechanism includes a second crushing cover, and the second crushing cover is located inside the first crushing cover;

[0015] The top of the second crushing cover is fixedly connected to a mounting bracket, the mounting cover passes through the shell and is slidably connected to the shell, the mounting bracket is fixedly connected to a fixing plate, the mounting bracket is sleeved with a second spring, and the two ends of the third spring are fixedly connected to the fixing plate and the shell respectively.

[0016] Preferably, the second crushing mechanism also includes a second connecting plate, the first magnetic strip is fixedly connected to the second connecting plate, the second magnetic strip is fixedly connected to the inner wall of the inner cavity of the second crushing cover, the second magnetic strip and the first magnetic strip magnetically repel each other, and a plurality of crushing cones are fixedly connected to the outer surface of the second crushing cover.

[0017] Preferably, the automatic unloading mechanism includes a first connecting rod, one end of which is fixedly connected to the top block, and the other end of which extends to the outside of the housing and is fixedly connected to the rack;

[0018] The rack is meshed with a first gear, the first gear is fixedly connected to a first rotating shaft, and both ends of the first rotating shaft are connected to the housing through a positioning assembly;

[0019] A mounting block is fixedly connected to the interior of the housing, a material delivery pipe is fixedly connected to the mounting block, a third rotating shaft is provided through the material delivery pipe, the third rotating shaft is rotatably connected to the material delivery pipe, and a blocking plate is fixedly connected to the third rotating shaft;

[0020] The third rotating shaft and the first rotating shaft are both fixedly connected with pulleys, and the two pulleys are connected by a driving belt.

[0021] Preferably, the positioning assembly includes an installation box, which is fixedly connected to the shell, and a slide is slidably connected inside the installation box. One side of the slide is connected to the installation box through a third spring, and the other side of the slide is fixedly connected to a sliding column, which is slidably connected to the installation box, and the sliding column is rotatably connected to the first rotating shaft.

[0022] Preferably, the automatic closing mechanism includes a storage box, which is located inside the housing and is slidably connected to the housing;

[0023] The bottom of the storage box is connected to the housing via a plurality of first springs;

[0024] A first extrusion column is fixedly connected to the bottom of the storage box, a water storage pipe is slidably connected to the first extrusion column, the water storage pipe is fixedly connected to the shell, and the water storage pipe is filled with water.

[0025] Preferably, the automatic closing mechanism further comprises an infusion tube, and the infusion tube is fixedly mounted on the housing;

[0026] One end of the infusion tube located inside the shell is connected to the water storage pipe, and the other end of the infusion tube located outside the shell is slidably connected to the second extrusion column. One end of the second extrusion column is fixedly connected to the first connecting plate, the first connecting plate is fixedly connected to the sliding column, and the other end of the second extrusion column is connected to the infusion tube through a fourth spring.

[0027] The beneficial effects of the present invention are:

[0028] 1. The present invention is driven by a motor to make the top block move up and down continuously. The up and down movement of the top block will make the rack move up and down continuously, so that the first gear will drive the sealing plate to rotate continuously. The rotation of the sealing plate inside the feed pipe will make the space for the feed pipe to transport stones continuously change, and the change will match the up and down movement of the first crushing cover. In this way, after the first crushing cover completes one crushing, the feed pipe will release one stone, effectively achieving fixed-state quantitative discharge and avoiding the phenomenon of accumulation caused by excessive discharge.

[0029] 2. The drive of the motor in the present invention can not only rotate the first crushing cover, but also move the first crushing cover up and down, and during the motor driving process, the second crushing cover will move left and right, so that the rotation of the first crushing cover will interact with the second crushing cover to crush the stones, and the upward movement of the first crushing cover will squeeze the rotating crushed stones, and the left and right movement of the second crushing cover will also squeeze the crushed stones, so that the stones can be effectively crushed from multiple aspects, making it convenient to obtain stones of appropriate size.

[0030] 3. The present invention can effectively collect the stones after they are crushed. When a certain amount of the crushed stones is collected, the water source in the water storage pipe will be squeezed. With the help of water pressure, the first gear can be moved away from the rack. Therefore, even if the motor is continuously running, the feeding pipe cannot transport the stones. In this way, the feeding can be effectively stopped automatically, preventing the storage box from storing too many stones and affecting the internal space of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0033] Figure 3 Schematic diagram of the internal structure of the housing of the present invention;

[0034] Figure 4 for Figure 2 An enlarged schematic diagram of part B;

[0035] Figure 5 for Figure 2 An enlarged schematic diagram of part C;

[0036] Figure 6 for Figure 2 An enlarged schematic diagram of part D;

[0037] Figure 7 It is a structural schematic diagram of the positioning assembly of the present invention;

[0038] Figure 8 Schematic diagram of the connection between the infusion tube and the second extrusion column of the present invention.

[0039] Reference numerals: 1, housing; 2, drive belt; 3, mounting box; 4, infusion tube; 5, first connecting rod; 6, rack; 7, first gear; 8, pulley; 9, first rotating shaft; 10, connecting plate; 11, sliding column; 12, first crushing cover; 13, mounting block; 14, feeding tube; 15, second crushing cover; 16, connecting plate; 17, second rotating shaft; 18, second connecting rod; 19, motor; 20, first extrusion column; 21, Water storage pipe; 22. First spring; 23. Storage box; 24. Protective cover; 25. First magnetic strip; 26. Second magnetic strip; 27. Limit plate; 28. Limit strip; 29. ​​Ball; 30. Auxiliary rod; 31. Reciprocating screw; 32. Top block; 33. Drive column; 34. Third rotating shaft; 35. Sealing plate; 36. Mounting frame; 37. Second spring; 38. Fixed plate; 39. Slide plate; 40. Third spring; 41. Second extrusion column. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without making any creative work are all within the scope of protection of the present invention.

[0041] Specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0042] Example 1:

[0043] like Figure 1-8 As shown, an intelligent stone crusher for civil engineering includes a shell 1, a first crushing mechanism is provided inside the shell 1, a second crushing mechanism is provided inside the first crushing mechanism, and the first crushing mechanism and the second crushing mechanism are used together to crush stones in multiple directions;

[0044] An automatic discharge mechanism is located outside the housing 1 and is fixedly connected to the housing 1. The automatic discharge mechanism releases stones according to the operating state of the first crushing mechanism;

[0045] The automatic closing mechanism is located inside the shell 1 and is fixedly connected to the bottom of the inner cavity of the shell 1. The automatic closing mechanism is used to close the automatic discharging mechanism.

[0046] The first crushing mechanism includes a protective cover 24, which is located inside the housing 1. The protective cover 24 is fixedly connected to the second connecting rod 18, which is fixedly connected to the housing 1;

[0047] The motor 19 is fixedly installed inside the protective cover 24. The power output shaft of the motor 19 is fixedly connected to a reciprocating screw 31. The reciprocating screw 31 is threadedly connected to a top block 32. The top block 32 is slidably connected to an auxiliary rod 30. The auxiliary rod 30 is fixedly connected to the protective cover 24. The top of the top block 32 is fixedly connected to a driving column 33.

[0048] A ball 29 is rolled on the auxiliary rod 30 .

[0049] The first pulverizing mechanism further includes a second rotating shaft 17, which is fixedly connected to the reciprocating screw 31;

[0050] Two limit plates 27 are fixedly connected to the second rotating shaft 17, and a limit bar 28 is fixedly connected between the two limit plates 27. The limit bar 28 is slidably connected to the first crushing cover 12 on the second rotating shaft 17. A plurality of through holes are opened at the bottom of the first crushing cover 12, and a plurality of crushing cones are installed on the inner wall of the first crushing cover 12.

[0051] The second crushing mechanism includes a second crushing cover 15, and the second crushing cover 15 is located inside the first crushing cover 12;

[0052] A mounting bracket 36 is fixedly connected to the top of the second crushing cover 15. The mounting bracket passes through the shell 1 and is slidably connected to the shell 1. A fixing plate 38 is fixedly connected to the mounting bracket 36. A second spring 37 is sleeved on the mounting bracket 36. Two ends of the third spring 40 are fixedly connected to the fixing plate 38 and the shell 1 respectively.

[0053] 5. The intelligent stone crusher for civil engineering according to claim 4 is characterized in that: the second crushing mechanism also includes a second connecting plate 16, a first magnetic strip 25 is fixedly connected to the second connecting plate 16, a second magnetic strip 26 is fixedly connected to the inner wall of the inner cavity of the second crushing cover 15, the second magnetic strip 26 and the first magnetic strip 25 magnetically repel each other, and a plurality of crushing spikes are fixedly connected to the outer surface of the second crushing cover 15.

[0054] Start the motor 19, which will drive the reciprocating screw 31 to rotate. The reciprocating screw 31 will drive the top block 32 to move up and down continuously. The up and down movement of the top block 32 will drive the first connecting rod 5 to move up and down, and the rack 6 will also move up and down accordingly.

[0055] The movement of the rack 6 drives the first gear 7 to rotate back and forth continuously, so that the first rotating shaft 9 rotates under the action of the first gear 7. The first rotating shaft 9 can effectively drive the third rotating shaft 34 to rotate through the pulley 8 and the connecting belt, and the third rotating shaft 34 drives the blocking plate 35 to rotate;

[0056] When the top block 32 moves to the top, the blocking plate 35 rotates ninety degrees, so that the blocking plate 35 will release the material delivery pipe 14 to discharge stones. Then, when the top block 32 moves down, the blocking plate 35 will block the material delivery pipe 14 again, thereby effectively achieving quantitative discharge.

[0057] Example 2:

[0058] like Figure 1-8 As shown, in the case where other parts are the same as those of Example 1, the difference between this embodiment and Example 1 is that the automatic unloading mechanism includes a first connecting rod 5, one end of the first connecting rod 5 is fixedly connected to the top block 32, and the other end of the first connecting rod 5 extends to the outside of the housing 1 and is fixedly connected to the rack 6;

[0059] The rack 6 is meshed with a first gear 7, and the first gear 7 is fixedly connected to a first rotating shaft 9. Both ends of the first rotating shaft 9 are connected to the housing 1 through a positioning assembly;

[0060] The housing 1 is fixedly connected to a mounting block 13, to which a delivery pipe 14 is fixedly connected. A third rotating shaft 34 is provided through the delivery pipe 14 and is rotatably connected to the delivery pipe 14. A blocking plate 35 is fixedly connected to the third rotating shaft 34.

[0061] The third rotating shaft 34 and the first rotating shaft 9 are both fixedly connected with pulleys 8 , and the two pulleys 8 are connected by a driving belt 2 .

[0062] The positioning assembly includes an installation box 3, which is fixedly connected to the shell 1. A slide 39 is slidably connected inside the installation box 3. One side of the slide 39 is connected to the installation box 3 through a third spring 40. The other side of the slide 39 is fixedly connected to a sliding column 11. The sliding column 11 is slidably connected to the installation box 3, and the sliding column 11 is rotatably connected to the first rotating shaft 9.

[0063] The rotation of the reciprocating screw 31 will also drive the second rotating shaft 17 to rotate, and the second rotating shaft 17 will drive the first crushing cover 12 to rotate through the limit bar 28, so that the first crushing cover 12 can crush stones by rotating;

[0064] In addition, the upward movement of the top block 32 will also drive the driving column 33 to move upward, and the upward movement of the driving column 33 will squeeze the first crushing cover 12, causing the first crushing cover 12 to move up and down, so that the first crushing cover 12 can both rotate and crush;

[0065] The rotation of the second rotating shaft 17 will also cause the first magnetic strip 25 to rotate. When the first magnetic strip 25 rotates to be symmetrical with the second magnetic strip 26, the second magnetic strip 26 will drive the second crushing cover 15 to move due to the repulsive force. In this way, the second crushing cover 15 can move left and right very well, which can effectively achieve left and right extrusion and crushing.

[0066] Example 3:

[0067] like Figure 1-8 As shown, in the case where other parts are the same as those in Example 1, the difference between this embodiment and Example 1 is that the automatic closing mechanism includes a storage box 23, which is located inside the housing 1 and is slidably connected to the housing 1;

[0068] The bottom of the storage box 23 is connected to the housing 1 via a plurality of first springs 22;

[0069] A first extrusion column 20 is fixedly connected to the bottom of the storage box 23 , and a water storage pipe 21 is slidably connected to the first extrusion column 20 . The water storage pipe 21 is fixedly connected to the shell 1 , and the water storage pipe 21 is filled with water.

[0070] The automatic closing mechanism further includes an infusion tube 4, which is fixedly mounted on the housing 1;

[0071] One end of the infusion tube 4 located inside the shell 1 is connected to the water storage pipe 21, and the other end of the infusion tube 4 located outside the shell 1 is slidably connected to the second extrusion column 41. One end of the second extrusion column 41 is fixedly connected to the first connecting plate 10, and the first connecting plate 10 is fixedly connected to the sliding column 11. The other end of the second extrusion column 41 is connected to the infusion tube 4 through a fourth spring.

[0072] When the crushed stones are discharged through the through hole, they will be collected by the collection box. As the number of stones in the collection box continues to increase, its overall weight will also increase. In this way, it will continue to move downward under the action of gravity, thereby squeezing the water source, causing the water source to drive the second squeezing column 41 to move, and the second squeezing column 41 drives the connecting plate to move. The connecting plate drives the first gear 7 and the rack 6 through the sliding column 11, so that the rack 6 is separated from the first gear 7, so that the motor 19 cannot drive the sealing plate 35 to rotate, and the stones will not be released, which effectively prevents the storage box 23 from being overfilled and overflowing.

[0073] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent stone crusher for civil engineering, comprising a housing (1), characterized in that: The housing (1) is provided with a first crushing mechanism inside, the first crushing mechanism is provided with a second crushing mechanism inside, and the first crushing mechanism and the second crushing mechanism are used together to crush stones in multiple directions; An automatic discharge mechanism, located outside the housing (1) and fixedly connected to the housing (1), the automatic discharge mechanism releasing stones according to the operating state of the first crushing mechanism; The automatic closing mechanism is located inside the shell (1) and is fixedly connected to the bottom of the inner cavity of the shell (1), and is used to close the automatic discharging mechanism.

2. The intelligent stone crusher for civil engineering according to claim 1, characterized in that: The first pulverizing mechanism comprises a protective cover (24), the protective cover (24) is located inside the housing (1), a second connecting rod (18) is fixedly connected to the protective cover (24), and the second connecting rod (18) is fixedly connected to the housing (1); A motor (19) is fixedly installed inside the protective cover (24); a reciprocating screw rod (31) is fixedly connected to the power output shaft of the motor (19); a top block (32) is threadedly connected to the reciprocating screw rod (31); an auxiliary rod (30) is slidably connected to the top block (32); the auxiliary rod (30) is fixedly connected to the protective cover (24); and a driving column (33) is fixedly connected to the top of the top block (32); A ball (29) is rollably arranged on the auxiliary rod (30).

3. The intelligent stone crusher for civil engineering according to claim 2, characterized in that: The first pulverizing mechanism further comprises a second rotating shaft (17), wherein the second rotating shaft (17) is fixedly connected to the reciprocating screw rod (31); Two limit plates (27) are fixedly connected to the second rotating shaft (17), a limit strip (28) is fixedly connected between the two limit plates (27), a first crushing cover (12) is slidably connected to the limit strip (28) and the second rotating shaft (17), a plurality of through holes are provided at the bottom of the first crushing cover (12), and a plurality of crushing cones are installed on the inner wall of the first crushing cover (12).

4. The intelligent stone crusher for civil engineering according to claim 3, characterized in that: The second pulverizing mechanism comprises a second pulverizing cover (15), and the second pulverizing cover (15) is located inside the first pulverizing cover (12); A mounting frame (36) is fixedly connected to the top of the second crushing cover (15); the mounting cover passes through the shell (1) and is slidably connected to the shell (1); a fixing plate (38) is fixedly connected to the mounting frame (36); a second spring (37) is sleeved on the mounting frame (36); and two ends of the third spring (40) are fixedly connected to the fixing plate (38) and the shell (1) respectively.

5. The intelligent stone crusher for civil engineering according to claim 4, characterized in that: The second pulverizing mechanism further comprises a second connecting plate (16), a first magnetic strip (25) being fixedly connected to the second connecting plate (16), a second magnetic strip (26) being fixedly connected to the inner wall of the inner cavity of the second pulverizing cover (15), the second magnetic strip (26) and the first magnetic strip (25) being magnetically repelled from each other, and a plurality of pulverizing cones being fixedly connected to the outer surface of the second pulverizing cover (15).

6. The intelligent stone crusher for civil engineering according to claim 2, characterized in that: The automatic material discharge mechanism comprises a first connecting rod (5), one end of which is fixedly connected to the top block (32), and the other end of which extends to the outside of the housing (1) and is fixedly connected to the rack (6); The rack (6) is meshed with a first gear (7), the first gear (7) is fixedly connected with a first rotating shaft (9), and both ends of the first rotating shaft (9) are connected to the housing (1) via a positioning assembly; A mounting block (13) is fixedly connected inside the housing (1), a material delivery pipe (14) is fixedly connected to the mounting block (13), a third rotating shaft (34) is provided through the material delivery pipe (14), the third rotating shaft (34) is rotatably connected to the material delivery pipe (14), and a blocking plate (35) is fixedly connected to the third rotating shaft (34); The third rotating shaft (34) and the first rotating shaft (9) are both fixedly connected with pulleys (8), and the two pulleys (8) are connected via a driving belt (2).

7. The intelligent stone crusher for civil engineering according to claim 6, characterized in that: The positioning assembly comprises an installation box (3), the installation box (3) is fixedly connected to the housing (1), a slide plate (39) is slidably connected inside the installation box (3), one side of the slide plate (39) is connected to the installation box (3) via a third spring (40), the other side of the slide plate (39) is fixedly connected to a sliding column (11), the sliding column (11) is slidably connected to the installation box (3), and the sliding column (11) is rotationally connected to the first rotating shaft (9).

8. The intelligent stone crusher for civil engineering according to claim 7, characterized in that: The automatic closing mechanism comprises a storage box (23), wherein the storage box (23) is located inside the housing (1) and is slidably connected to the housing (1); The bottom of the storage box (23) is connected to the housing (1) via a plurality of first springs (22); The bottom of the storage box (23) is fixedly connected to a first extrusion column (20), a water storage pipe (21) is slidably connected to the first extrusion column (20), the water storage pipe (21) is fixedly connected to the housing (1), and the water storage pipe (21) is filled with water.

9. The intelligent stone crusher for civil engineering according to claim 8, characterized in that: The automatic closing mechanism further comprises an infusion tube (4), wherein the infusion tube (4) is fixedly mounted on the housing (1); One end of the infusion tube (4) located inside the shell (1) is connected to the water storage tube (21); one end of the infusion tube (4) located outside the shell (1) is slidably connected to a second extrusion column (41); one end of the second extrusion column (41) is fixedly connected to a first connecting plate (10); the first connecting plate (10) is fixedly connected to the sliding column (11); the other end of the second extrusion column (41) is connected to the infusion tube (4) via a fourth spring.