Stone crusher for civil engineering and use method thereof

Abstract

The invention discloses a civil engineering stone crusher and a using method thereof, and relates to the technical field of civil engineering crushers, the civil engineering stone crusher comprises a main body mechanism, the main body mechanism comprises a shell, a support is fixedly mounted at the bottom of the shell, a crushing roller is rotatably connected to the inner wall of the shell, and a crushing rod is fixedly mounted on the surface of the crushing roller; according to the stone crusher for civil engineering and the use method of the stone crusher for civil engineering, through cooperative use of the guide unit and the cutting unit, the purpose of pre-cutting stones can be achieved, when the stones are crushed, due to the fact that cracks exist in the surfaces of the stones, the crushing process is smooth, and the stone crusher is high in practicability. According to the crushing roller of the stone crusher, stones cannot continuously roll on the crushing roller in the crushing process, the strength of the stones is weakened due to cracks in the surfaces of the stones, so that the stones are fragile, the service life of the crushing roller of the stone crusher is prolonged, and the service life of the stone crusher is further prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering crushers, in particular to a stone crusher for civil engineering and a use method thereof. Background Art

[0002] Stone crusher alias: stone crusher, stone crusher, ore crusher, stone crusher is a machine that breaks large rocks into fragments by extrusion, splitting, bending, impact, rolling and other methods. Commonly used crushers include jaw, cone, hammer and roller crushers.

[0003] In the construction of civil engineering, some stones need to be crushed. In the process of crushing stones, a stone crusher is needed. When the existing stone crusher is crushing stones, some stones are large in size. When they enter the stone crusher, it is not easy for the stone crusher to crush the stones. The stones will continue to roll on the crushing roller of the stone crusher. Long-term friction will cause the crushing roller to be damaged, and the efficiency of stone crushing will be reduced, which will affect the service life of the crushing roller inside the stone crusher. For this reason, we propose a stone crusher for civil engineering and its use method.

[0004] Combining the above problems, we will find that it is difficult to avoid the above problems at the same time when using the existing civil engineering crushers on the market, and even if they can be solved, they need to be solved with the cooperation of external tools, thus failing to achieve the desired effect. Therefore, we propose a civil engineering crusher and a method of using the same. Summary of the invention

[0005] The object of the present invention is to provide a stone crusher for civil engineering and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a stone crusher for civil engineering and a method for using the same, comprising a main body mechanism, the main body mechanism comprising a shell, a bracket fixedly mounted on the bottom of the shell, a crushing roller rotatably connected to the inner wall of the shell, a crushing rod fixedly mounted on the surface of the crushing roller, the number of the crushing rods is several, a pulley fixedly mounted on the top of the crushing roller, the pulley is rotatably connected to the inner wall of the shell through a bearing, one end of the pulley penetrates to the outside of the shell, a pre-treatment mechanism is arranged in the inner cavity of the shell, the pre-treatment mechanism is arranged on the top of the crushing roller, a discharge pipe is fixedly mounted on the bottom of the shell, a feed hopper is fixedly mounted on the top of the shell, the number of the feed hoppers is two;

[0007] The pre-treatment mechanism comprises a guide unit, the guide unit is arranged in the inner cavity of the shell, and the guide unit is located on the top of the crushing roller;

[0008] The pre-processing mechanism further comprises a cutting unit, which is arranged inside the guide unit and used in conjunction with the guide unit. The cutting unit and the guide unit are used to perform cutting pre-processing on larger crushed stones;

[0009] A grinding mechanism is provided at the bottom of the discharge pipe, and the grinding mechanism is used in conjunction with the cutting unit to grind the crushed gravel.

[0010] Preferably, the cutting unit includes a shell, and the number of the shells is four and they are evenly distributed in the inner cavity of the shell in a ring shape, a powerful motor is fixedly installed on the inner wall of the shell, the output end of the powerful motor passes through the outside of the shell and is clamped with a turntable, an outer cutting knife is provided on one side of the turntable, a connecting rod is fixedly installed on one side of the turntable, the number of the connecting rods is several, one end of the connecting rod is fixedly connected to one side of the outer cutting knife, the inner rotation of the outer cutting knife is connected to the inner cutting knife, the number of the inner cutting knives is two, a first bevel gear is fixedly installed on the inner wall of the inner cutting knife, a second bevel gear is fixedly installed on one side of the turntable, the first bevel gear is meshed with the second bevel gear, the outer cutting knife and the inner cutting knife are both made of carbide material, and a protective sleeve is fixedly installed on one side of the shell, and the protective sleeve is sleeved on the output shaft of the powerful motor and the surface of the turntable.

[0011] Preferably, a positioning rod is fixedly installed on one side of the first bevel gear, and a positioning groove used in conjunction with the positioning rod is opened on the inner wall of the outer cutting knife. A positioning sleeve is fixedly installed on the surface of the positioning rod, and one end of the positioning sleeve contacts the inner wall of the outer cutting knife. A first bearing is fixedly installed between the opposite sides of the two first bevel gears, and one side of the inner ring and outer ring of the first bearing are respectively fixedly connected to the two first bevel gears.

[0012] By setting the positioning rod, the positioning groove, the positioning sleeve and the first bearing, the inner cutting knife can be more stable during the rotation process, and the outer cutting knife can be prevented from deflecting and falling during the rotation process, thereby ensuring the stability of stone cutting.

[0013] Preferably, a support rod is fixedly installed on the surface of the positioning sleeve, a mounting rod is fixedly installed on one side of the support rod, a mounting bracket is fixedly installed on one side of the mounting rod, the mounting bracket is fixedly installed on one side of the shell by bolts, a mounting seat is fixedly installed between one side of the two support rods, a dust cover is fixedly installed on one side of the mounting seat, the dust cover is arranged on the surfaces of the first bevel gear and the second bevel gear, a self-locking buckle is fixedly installed on the output end of the powerful motor, and the powerful motor is clamped to the turntable via the self-locking buckle.

[0014] By providing the coordinated use of a support rod, a mounting rod and a mounting frame, the stability of the inner cutting knife can be further improved, thereby ensuring the stability of the inner cutting knife during rotation; by providing the coordinated use of a mounting seat and a dust cover, the first bevel gear and the second bevel gear can be protected to prevent dust and stones from affecting the operation of the first bevel gear and the second bevel gear, thereby increasing stability; and by providing a self-locking buckle, the inner cutting knife and the outer cutting knife can be easily replaced.

[0015] Preferably, the guide unit comprises a fixing plate, the fixing plate is fixedly mounted on the inner wall of the shell, a support ring is fixedly mounted on the top of the fixing plate, a swivel is rotatably connected to the top of the fixing plate, a fixing block is fixedly mounted on the inner wall of the swivel, the number of the fixing blocks is four, a transmission rod is fixedly mounted on the bottom of the fixing block, one end of the four transmission rods is fixedly connected to the top of four of the crushing rods, a first guide groove is provided on the top of the fixing plate, a second guide groove is provided on the inner wall of the support ring, the first guide groove and the second guide groove are both concave T-shaped, and the shell A connecting plate is fixedly installed at the bottom of the body, a first limit rod is fixedly installed at the bottom of the connecting plate, one end of the first limit rod passes through the swivel and extends to the inner cavity of the first guide groove, a guide plate is fixedly installed on the top of the shell, a first telescopic rod is fixedly installed on one side of the guide plate, one end of the inner rod of the first telescopic rod is fixedly installed on the limiting plate, a second limit rod is fixedly installed on one side of the limiting plate, the second limit rod is slidably installed in the inner cavity of the second guide groove, a second telescopic rod is fixedly installed on the top of the swivel, and one end of the inner rod of the second telescopic rod is slidably connected to the bottom of the guide plate.

[0016] Preferably, a dovetail block is fixedly installed on one end of the inner rod of the second telescopic rod, a dovetail groove for use with the dovetail block is opened at the bottom of the guide plate, an elastic protective pad is fixedly installed on the surface of the first limiting rod, and one side of the elastic protective pad is fixedly connected to the support ring.

[0017] By setting the dovetail block and the dovetail groove for use together, the outer cutting knife and the inner cutting knife can be made more stable during movement and avoid deflection. By setting an elastic protective pad, dust and stones can be prevented from entering the inner cavity of the first guide groove. The support ring is set in a conical shape, and stones will not enter the inner cavity of the second guide groove.

[0018] Preferably, the grinding mechanism includes a fixed barrel, which is arranged at the bottom of the discharge pipe, and the fixed barrel is rotatably connected to the bottom of the outer shell, the inner cavity of the fixed barrel is rotatably connected to a conical grinding roller, the bottom of the conical grinding roller is rotatably connected to a support seat, one side of the support seat is fixedly installed on one side of the fixed barrel, a matching block is slidably installed on the top of the conical grinding roller, a matching rod is fixedly installed on the bottom of the crushing roller, a matching groove for matching with the matching block is opened at one end of the matching rod, one side of the matching block is arranged in an arc shape, a fixed shaft is fixedly installed on the bottom of the conical grinding roller, a second bearing is fixedly installed on the surface of the fixed shaft, the surface of the outer ring of the second bearing is fixedly installed on the inner wall of the support seat, and the surface of the conical grinding roller is threaded.

[0019] Preferably, a fixing column is fixedly installed on the bottom of the shell, one end of the fixing column is rotatably connected to a rotating plate, one end of the fixing column is fixedly installed with a positioning shaft, the rotating plate is sleeved on the surface of the positioning shaft, one side of the rotating plate is fixedly installed on the surface of a fixed barrel, a mounting plate is fixedly installed on the surface of the fixed barrel, the inner wall of the mounting plate is threadedly connected with a screw, and the screw is threadedly connected to the inner wall of the discharge pipe.

[0020] By setting up the fixed column, positioning shaft, mounting plate and screws, the operator can grind the stone according to the situation. When grinding is not needed, the fixed barrel and the conical grinding roller can be rotated to an unnecessary place. When grinding is needed, the fixed barrel and the conical grinding roller can be rotated to the bottom of the discharge pipe for positioning.

[0021] Preferably, a movable rod is fixedly installed at the bottom of the matching block, one end of the movable rod penetrates into the inner cavity of the conical grinding roller and is fixedly installed with a movable plate, and a spring is fixedly installed at the bottom of the movable plate, one end of the spring is fixedly installed on the inner wall of the conical grinding roller.

[0022] By arranging the movable rod, the movable plate and the spring for coordinated use, the matching block can enter the inner cavity of the matching groove through the reaction force of the spring, so that the conical grinding roller can rotate through the crushing roller and the matching rod.

[0023] A method for using a stone crusher for civil engineering, the specific steps are as follows:

[0024] S1: When crushing stones, the user uses an external transmission device to drive the pulley to rotate, the rotation of the pulley drives the crushing roller to rotate, the rotation of the crushing roller drives the crushing rod to rotate, the rotation of the four crushing rods drives the transmission rod to rotate, the rotation of the transmission rod drives the fixed block to rotate, the rotation of the fixed block drives the swivel to rotate, the rotation of the swivel drives the first limit rod to rotate in the inner cavity of the first guide groove, the first limit rod is guided by the first guide groove to move back and forth, the first limit rod pulls the elastic protective pad to stretch while moving, and drives the connecting plate to move at the same time, the movement of the connecting plate drives the shell to move, the movement of the shell drives the powerful motor to move, the movement of the powerful motor drives the self-locking buckle to move, the movement of the self-locking buckle drives the turntable to move, the movement of the turntable drives the connecting rod to move, the connecting rod The movement of the outer cutting knife drives the movement of the outer cutting knife, and the movement of the outer cutting knife drives the inner cutting knife to move, so that the inner cutting knife and the outer cutting knife can move forward and backward. At the same time, during the movement of the shell body, the first telescopic rod is telescoped and extended, and at the same time, the limit plate is driven to move. The movement of the limit plate drives the second limit rod to move, so that the second limit rod moves in the inner cavity of the second guide groove. Guided by the second guide groove, the second limit rod is moved up and down in a wave-like circular shape, so that the inner cutting knife and the outer cutting knife can be driven to move up and down in a wave-like circular shape. During the process of the inner and outer cutting knives moving up and down in a wave-like circular shape, the second telescopic rod is guided and extended. During the process of the shell body moving forward and backward, the dovetail block and the dovetail groove are used for guidance, so that the inner and outer cutting knives can also move forward and backward during the process of the wave-like up and down circular movement.

[0025] S2: After completing the previous step, the user uses the external control switch and the battery to start the powerful motor. The start of the powerful motor drives the self-locking buckle to rotate, the rotation of the self-locking buckle drives the turntable to rotate, the rotation of the turntable drives the connecting rod to rotate, the rotation of the connecting rod drives the outer cutting knife to rotate, and during the rotation of the turntable, the second bevel gear is driven to rotate, the rotation of the second bevel gear drives the first bevel gear to rotate, and the rotation of the first bevel gear drives the inner cutting knife to rotate. The two inner cutting knives rotate through the first bearing, and the inner cutting knives are driven by the support rod, the mounting rod, the mounting frame, The positioning rod, positioning sleeve and positioning groove are positioned and rotated, and there will be no deflection or falling during the rotation. During the rotation of the inner and outer cutting knives, they can be moved forward and backward in the process of wave-like up and down circular movement. At this time, the user puts the material into the outer shell through the feed hopper. Some larger stones will be cut after being touched by the outer and inner cutting knives, and cracks will be cut on the surface of the stones. Some smaller stones will also be cut when they touch the outer and inner cutting knives. The cut stones will fall to the position of the crushing roller and the crushing rod for crushing;

[0026] S3: After the stone is crushed, if the user needs more regular and smaller crushed stones, the user rotates the positioning shaft, the rotation of the rotating plate drives the fixed barrel to rotate, the rotation of the fixed barrel drives the support seat to rotate, the rotation of the support seat drives the conical grinding roller to rotate, the conical grinding roller drives the matching block to move during the rotation, the matching block will touch the discharge pipe during the movement, because one side of the matching block is set in an arc shape, when it touches the discharge pipe, it will be squeezed and moved downward, the movement of the matching block drives the movable rod to move, the movement of the movable rod drives the movable plate to move, the movement of the movable plate squeezes the spring, so that the fixed barrel and the conical grinding roller rotate to the discharge. The bottom of the tube. At this time, the user uses the mounting plate and screws to position the fixed barrel. When the conical grinding roller is completely moved to the bottom of the discharge pipe, the matching block is allowed to enter the inner cavity of the matching groove through the reaction force of the spring. After the matching block completely enters the inner cavity of the matching groove, the matching rod will rotate through the crushing roller. The rotation of the matching rod drives the matching block to rotate. The rotation of the matching block drives the conical grinding roller to rotate. The conical grinding roller rotates through the second bearing and the fixed shaft. After being crushed, the stone enters the inner cavity of the discharge pipe, and then enters between the conical grinding roller and the fixed barrel. The rotation of the conical grinding roller grinds the stone to make the size of the stone more regular and the particles smaller.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The present invention sets a guide unit and a cutting unit for coordinated use, so that some larger stones can be cut after being touched by the outer cutting knife and the inner cutting knife, and cracks can be cut on the surface of the stones. Some smaller stones can also be cut when they touch the outer cutting knife and the inner cutting knife. The cut stones will fall to the position of the crushing roller and the crushing rod for crushing, thereby achieving the purpose of pre-cutting the stones. When the stones are crushed, the crushing process will be smoother due to the cracks on the surface of the stones. The stones will not roll continuously on the crushing roller during the crushing process. The cracks on the surface of the stones will weaken the strength of the stones themselves, making the stones fragile, thereby increasing the service life of the crushing roller of the stone crusher, and further increasing the service life of the stone crusher.

[0029] 2. The present invention can achieve the purpose of grinding stones by setting a grinding mechanism. After the stone is crushed, the stone can be ground into gravel with more regular size and smaller particles. When some stones do not meet the requirements, the operator does not need to re-crush these stones, thereby reducing the working intensity of the crusher and further ensuring the service life of the crusher. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the cooperation between the guide unit and the cutting unit of the present invention;

[0032] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle A;

[0033] Figure 4 It is an exploded schematic diagram of the guide unit and the cutting unit of the present invention;

[0034] Figure 5 It is an exploded schematic diagram of the cutting unit of the present invention;

[0035] Figure 6 For the present invention Figure 5 A partial enlarged view of point B in the middle;

[0036] Figure 7 It is a schematic diagram of the partial structure of the grinding mechanism of the present invention;

[0037] Figure 8 It is a schematic diagram of the operation of the grinding mechanism of the present invention;

[0038] Fig. 9 It is a schematic diagram of the partial structural decomposition of the grinding mechanism of the present invention.

[0039] In the figure: 1. main body; 11. shell; 12. bracket; 13. feed hopper; 14. pulley; 15. discharge pipe; 16. crushing roller; 17. crushing rod; 2. pretreatment mechanism; 21. guide unit; 2101. fixed plate; 2102. support ring; 2103. first guide groove; 2104. second guide groove; 2105. guide plate; 2106. rotating ring; 2107. limit plate; 2 108, second limit rod; 2109, first telescopic rod; 2110, dovetail block; 2111, dovetail groove; 2112, connecting plate; 2113, elastic protective pad; 2114, first limit rod; 2115, second telescopic rod; 2116, fixing block; 2117, transmission rod; 22, cutting unit; 2201, housing; 2202, protective cover; 2203, powerful motor; 2204, self Lock buckle; 2205, turntable; 2206, connecting rod; 2207, mounting frame; 2208, mounting rod; 2209, outer cutting knife; 2210, inner cutting knife; 2211, dust cover; 2212, mounting seat; 2213, second bevel gear; 2214, first bevel gear; 2215, positioning rod; 2216, positioning sleeve; 2217, support rod; 2218, first bearing; 2219 , positioning groove; 3, grinding mechanism; 301, fixed barrel; 302, rotating plate; 303, fixed column; 304, conical grinding roller; 305, matching rod; 306, matching groove; 307, matching block; 308, supporting seat; 309, fixed shaft; 310, second bearing; 311, positioning shaft; 312, mounting plate; 313, screw; 314, spring; 315, movable plate; 316, movable rod. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Embodiment 1

[0042] See also Figure 1-9The present invention provides a technical solution: a stone crusher for civil engineering and a method for using the same, comprising a main body mechanism 1, the main body mechanism 1 comprising a shell 11, a bracket 12 is fixedly installed at the bottom of the shell 11, a crushing roller 16 is rotatably connected to the inner wall of the shell 11, a crushing rod 17 is fixedly installed on the surface of the crushing roller 16, and the number of crushing rods 17 is several, a pulley 14 is fixedly installed on the top of the crushing roller 16, the pulley 14 is rotatably connected to the inner wall of the shell 11 through a bearing, one end of the pulley 14 penetrates to the outside of the shell 11, a pre-treatment mechanism 2 is provided in the inner cavity of the shell 11, and the pre-treatment mechanism 2 is provided on the top of the crushing roller 16, a discharge pipe 15 is fixedly installed at the bottom of the shell 11, and a feed hopper 13 is fixedly installed on the top of the shell 11, and the number of the feed hoppers 13 is two;

[0043] The pre-treatment mechanism 2 includes a guide unit 21, which is disposed in the inner cavity of the housing 11 and is located on the top of the crushing roller 16;

[0044] The pre-processing mechanism 2 further comprises a cutting unit 22, which is arranged inside the guide unit 21. The cutting unit 22 cooperates with the guide unit 21 for use. The cutting unit 22 and the guide unit 21 are used for cutting and pre-processing larger gravels.

[0045] As a further limitation of the pretreatment mechanism 2 of the present invention, the cutting unit 22 includes a shell 2201, the number of the shells 2201 is four, and they are evenly distributed in the inner cavity of the shell 11 in a ring shape, and a powerful motor 2203 is fixedly installed on the inner wall of the shell 2201, and the output end of the powerful motor 2203 passes through the outer side of the shell 2201 and is clamped with a turntable 2205, and an external cutting knife 2209 is arranged on one side of the turntable 2205, and a connecting rod 2206 is fixedly installed on one side of the turntable 2205, and the number of the connecting rods 2206 is several, and one end of the connecting rod 2206 is connected to one end of the external cutting knife 2209. The outer cutting knife 2209 is rotatably connected to the inner cutting knife 2210, and there are two inner cutting knives 2210. The inner wall of the inner cutting knife 2210 is fixedly installed with a first bevel gear 2214. A second bevel gear 2213 is fixedly installed on one side of the turntable 2205. The first bevel gear 2214 meshes with the second bevel gear 2213. The outer cutting knife 2209 and the inner cutting knife 2210 are both made of cemented carbide materials. A protective sleeve 2202 is fixedly installed on one side of the housing 2201. The protective sleeve 2202 is sleeved on the output shaft of the powerful motor 2203 and the surface of the turntable 2205;

[0046] A positioning rod 2215 is fixedly installed on one side of the first bevel gear 2214, and a positioning groove 2219 used in conjunction with the positioning rod 2215 is opened on the inner wall of the outer cutting knife 2209. A positioning sleeve 2216 is fixedly installed on the surface of the positioning rod 2215, and one end of the positioning sleeve 2216 contacts the inner wall of the outer cutting knife 2209. A first bearing 2218 is fixedly installed between the opposite sides of the two first bevel gears 2214, and one side of the inner ring and the outer ring of the first bearing 2218 are respectively fixedly connected to the two first bevel gears 2214. By setting the positioning rod 2215, the positioning groove 2219, the positioning sleeve 2216 and the first bearing 2218, the inner cutting knife 2210 can be made more stable during the rotation process, and the inner cutting knife 2210 can be prevented from being deflected and falling during the rotation process, thereby ensuring the stability of the stone cutting;

[0047] A support rod 2217 is fixedly installed on the surface of the positioning sleeve 2216, a mounting rod 2208 is fixedly installed on one side of the support rod 2217, a mounting frame 2207 is fixedly installed on one side of the mounting rod 2208, and the mounting frame 2207 is fixedly installed on one side of the housing 2201 by bolts, a mounting seat 2212 is fixedly installed between one side of the two support rods 2217, a dust cover 2211 is fixedly installed on one side of the mounting seat 2212, and the dust cover 2211 is sleeved on the surfaces of the first bevel gear 2214 and the second bevel gear 2213, and a self-locking buckle 2204 is fixedly installed on the output end of the powerful motor 2203, and the powerful motor 2203 is fixedly installed by the self-locking buckle 2204 is connected with the rotating disk 2205. By setting the support rod 2217, the mounting rod 2208 and the mounting frame 2207, the stability of the inner cutting knife 2210 can be further improved, and the stability of the inner cutting knife 2210 during rotation is guaranteed. By setting the mounting seat 2212 and the dust cover 2211, the first bevel gear 2214 and the second bevel gear 2213 can be protected to prevent dust and stones from affecting the operation of the first bevel gear 2214 and the second bevel gear 2213, thereby increasing the stability. By setting the self-locking buckle 2204, the inner cutting knife 2210 and the outer cutting knife 2209 can be easily replaced.

[0048] The guide unit 21 includes a fixed plate 2101, which is fixedly installed on the inner wall of the shell 11. A support ring 2102 is fixedly installed on the top of the fixed plate 2101. A swivel 2106 is rotatably connected to the top of the fixed plate 2101. A fixed block 2116 is fixedly installed on the inner wall of the swivel 2106. There are four fixed blocks 2116. A transmission rod 2117 is fixedly installed on the bottom of the fixed block 2116. One end of the four transmission rods 2117 is fixedly connected to the top of four crushing rods 17. A first guide groove 2103 is opened on the top of the fixed plate 2101, and a second guide groove 2104 is opened on the inner wall of the support ring 2102. The first guide groove 2103 and the second guide groove 2104 are both concave T-shaped. The bottom of the shell 2201 is fixed A connecting plate 2112 is fixedly installed, a first limiting rod 2114 is fixedly installed at the bottom of the connecting plate 2112, one end of the first limiting rod 2114 passes through the rotating ring 2106 and extends to the inner cavity of the first guide groove 2103, a guide plate 2105 is fixedly installed on the top of the shell 2201, a first telescopic rod 2109 is fixedly installed on one side of the guide plate 2105, one end of the inner rod of the first telescopic rod 2109 is fixedly installed with a limiting plate 2107, a second limiting rod 2108 is fixedly installed on one side of the limiting plate 2107, the second limiting rod 2108 is slidably installed in the inner cavity of the second guide groove 2104, a second telescopic rod 2115 is fixedly installed on the top of the rotating ring 2106, one end of the inner rod of the second telescopic rod 2115 is slidably connected to the bottom of the guide plate 2105;

[0049] A dovetail block 2110 is fixedly installed on one end of the inner rod of the second telescopic rod 2115, a dovetail groove 2111 used in conjunction with the dovetail block 2110 is provided at the bottom of the guide plate 2105, an elastic protective pad 2113 is fixedly installed on the surface of the first limit rod 2114, one side of the elastic protective pad 2113 is fixedly connected to the support ring 2102, and the coordination of the dovetail block 2110 and the dovetail groove 2111 can make the outer cutting knife 2209 and the inner cutting knife 2210 more stable during movement, and avoid the phenomenon of deflection, and the elastic protective pad 2113 can prevent dust and stones from entering the inner cavity of the first guide groove 2103, and the support ring 2102 is conical, so that stones will not enter the inner cavity of the second guide groove 2104;

[0050] By setting the coordinated use of the guide unit 21 and the cutting unit 22, some larger stones can be cut after being touched by the outer cutting knife 2209 and the inner cutting knife 2210, and cracks will be cut on the surface of the stones. Some smaller stones will also be cut when they touch the outer cutting knife 2209 and the inner cutting knife 2210. The cut stones will fall to the position of the crushing roller 16 and the crushing rod 17 for crushing, thereby achieving the purpose of pre-cutting the stones. When the stones are crushed, since there are cracks on the surface of the stones, the crushing process will be smoother. The stones will not continue to roll on the crushing roller 16 during the crushing process. The cracks on the surface of the stones will weaken the strength of the stones themselves, making the stones fragile, thereby increasing the service life of the crushing roller 16 of the crusher, and further increasing the service life of the crusher.

[0051] The specific implementation of this embodiment is as follows: when crushing stones, the user uses an external transmission device to drive the pulley 14 to rotate, the rotation of the pulley 14 drives the crushing roller 16 to rotate, the rotation of the crushing roller 16 drives the crushing rod 17 to rotate, wherein the rotation of the four crushing rods 17 drives the transmission rod 2117 to rotate, the rotation of the transmission rod 2117 drives the fixed block 2116 to rotate, the rotation of the fixed block 2116 drives the swivel 2106 to rotate, the rotation of the swivel 2106 drives the first limiting rod 2114 to rotate in the inner cavity of the first guide groove 2103, the first limiting rod 2114 is guided by the first guide groove 2103 to move back and forth, and the first limiting rod 2114 pulls the elastic while moving The protective pad 2113 is stretched, and at the same time, the connecting plate 2112 is driven to move, the movement of the connecting plate 2112 drives the shell 2201 to move, the movement of the shell 2201 drives the powerful motor 2203 to move, the movement of the powerful motor 2203 drives the self-locking buckle 2204 to move, the movement of the self-locking buckle 2204 drives the turntable 2205 to move, the movement of the turntable 2205 drives the connecting rod 2206 to move, the movement of the connecting rod 2206 drives the outer cutting knife 2209 to move, the movement of the outer cutting knife 2209 drives the inner cutting knife 2210 to move, so that the inner cutting knife 2210 and the outer cutting knife 2209 can move forward and backward. At the same time, during the movement of the shell 2201, the first stretching The retractable rod 2109 is extended and retracted, and at the same time, the limiting plate 2107 is driven to move. The movement of the limiting plate 2107 drives the second limiting rod 2108 to move, so that the second limiting rod 2108 moves in the inner cavity of the second guide groove 2104. The second limiting rod 2108 is guided by the second guide groove 2104 to move up and down in a wave-like circular shape, thereby driving the inner cutting knife 2210 and the outer cutting knife 2209 to move up and down in a wave-like circular shape. During the process of the inner cutting knife 2210 and the outer cutting knife 2209 moving up and down in a wave-like circular shape, the second telescopic rod 2115 is used to guide and retract. During the process of the shell 2201 moving back and forth, the dovetail block 2110 and the dovetail groove 2111 are used in combination for guidance, so that the inner cutting knife 2210 and the outer cutting knife 2209 can be moved up and down in a wave-like circular shape. The knife 2210 and the outer cutting knife 2209 can also move forward and backward during the process of the wave-shaped up and down circular movement. At this time, the user uses the external control switch and the battery to start the powerful motor 2203. The start of the powerful motor 2203 drives the self-locking buckle 2204 to rotate. The rotation of the self-locking buckle 2204 drives the turntable 2205 to rotate. The rotation of the turntable 2205 drives the connecting rod 2206 to rotate. The rotation of the connecting rod 2206 drives the outer cutting knife 2209 to rotate. During the rotation of the turntable 2205, the second bevel gear 2213 is driven to rotate. The rotation of the second bevel gear 2213 drives the first bevel gear 2214 to rotate. The rotation of the first bevel gear 2214 drives the inner cutting knife 2210 to rotate.The two inner cutting knives 2210 rotate through the first bearing 2218, and the inner cutting knives 2210 are positioned and rotated through the support rod 2217, the mounting rod 2208, the mounting frame 2207, the positioning rod 2215, the positioning sleeve 2216 and the positioning groove 2219. There will be no deflection or falling during the rotation. During the rotation of the inner cutting knives 2210 and the outer cutting knives 2209, they can be moved forward and backward in the process of wave-like up and down circular movement. At this time, the user places the material into the outer shell 11 through the feed hopper 13. Some larger stones will be cut after being touched by the outer cutting knives 2209 and the inner cutting knives 2210. , cracks will be cut on the surface of the stone. When some smaller stones touch the outer cutting knife 2209 and the inner cutting knife 2210, they will also be cut. The cut stones will fall to the position of the crushing roller 16 and the crushing rod 17 for crushing, achieving the purpose of pre-cutting the stone. When the stone is crushed, the crushing process will be smoother due to the cracks on the surface of the stone. The stone will not continue to roll on the crushing roller 16 during the crushing process. The cracks on the surface of the stone will weaken the strength of the stone itself, making the stone easy to break, thereby increasing the service life of the crushing roller 16 of the stone crusher, and further increasing the service life of the stone crusher. ,

[0052] Embodiment 2

[0053] See also Figure 1-9 The present invention provides a technical solution: a stone crusher for civil engineering and a method of using the same. The present invention makes corresponding improvements to the technical problems mentioned in the background technology.

[0054] As a further limitation of the pretreatment mechanism 2 of the present invention, a grinding mechanism 3 is provided at the bottom of the discharge pipe 15, and the grinding mechanism 3 is used in conjunction with the cutting unit 22, and the grinding mechanism 3 is used to grind the crushed gravel;

[0055] The grinding mechanism 3 includes a fixed barrel 301, which is arranged at the bottom of the discharge pipe 15, and the fixed barrel 301 is rotatably connected to the bottom of the shell 11. The inner cavity of the fixed barrel 301 is rotatably connected to a conical grinding roller 304, and the bottom of the conical grinding roller 304 is rotatably connected to a support seat 308, one side of the support seat 308 is fixedly installed on one side of the fixed barrel 301, and a matching block 307 is slidably installed on the top of the conical grinding roller 304. A matching rod 305 is fixedly installed at the bottom of the crushing roller 16, and one end of the matching rod 305 is provided with a matching groove 306 used in conjunction with the matching block 307, and one side of the matching block 307 is arranged in an arc shape. A fixed shaft 309 is fixedly installed at the bottom of the conical grinding roller 304, and a second bearing 310 is fixedly installed on the surface of the fixed shaft 309. The surface of the outer ring of the second bearing 310 is fixedly installed on the inner wall of the support seat 308. The surface of the conical grinding roller 304 is threaded. By setting the grinding mechanism 3, the purpose of grinding the stone can be achieved. After the stone is crushed, the stone can be ground into crushed stones with more regular sizes and smaller particles. When some stones do not meet the requirements, the operator does not need to re-crush these stones again, thereby reducing the working intensity of the crusher and further ensuring the service life of the crusher.

[0056] A fixing column 303 is fixedly installed at the bottom of the shell 11, and a rotating plate 302 is rotatably connected to one end of the fixing column 303, and a positioning shaft 311 is fixedly installed at one end of the fixing column 303, and the rotating plate 302 is sleeved on the surface of the positioning shaft 311, and one side of the rotating plate 302 is fixedly installed on the surface of the fixed barrel 301, and a mounting plate 312 is fixedly installed on the surface of the fixed barrel 301, and a screw 313 is threadedly connected to the inner wall of the discharging pipe 15, and the screw 313 is threadedly connected to the inner wall of the discharging pipe 15. By setting the fixing column 303, the positioning shaft 311, the mounting plate 312 and the screw 313, the operator can grind the stone according to the situation, and when grinding is not needed, the fixing barrel 301 and the conical grinding roller 304 can be rotated to an unnecessary place, and when grinding is needed, the fixing barrel 301 and the conical grinding roller 304 can also be rotated to the bottom of the discharging pipe 15 for positioning;

[0057] A movable rod 316 is fixedly installed at the bottom of the matching block 307, one end of the movable rod 316 penetrates into the inner cavity of the conical grinding roller 304 and is fixedly installed with a movable plate 315, and a spring 314 is fixedly installed at the bottom of the movable plate 315, one end of the spring 314 is fixedly installed on the inner wall of the conical grinding roller 304. By setting the movable rod 316, the movable plate 315 and the spring 314 for coordinated use, the matching block 307 can enter the inner cavity of the matching groove 306 through the reaction force of the spring 314, so that the conical grinding roller 304 can be rotated through the crushing roller 16 and the matching rod 305.

[0058] The specific implementation of this embodiment is as follows: after the stone is crushed, if the user needs more regular and smaller crushed stones, the user rotates the positioning shaft 311, the rotation of the rotating plate 302 drives the fixed barrel 301 to rotate, the rotation of the fixed barrel 301 drives the support seat 308 to rotate, the rotation of the support seat 308 drives the conical grinding roller 304 to rotate, the conical grinding roller 304 drives the matching block 307 to move during the rotation process, and the matching block 307 touches the discharge pipe 1 during the movement process. 5. Since one side of the matching block 307 is arranged in an arc shape, when it touches the discharge pipe 15, it will be squeezed and moved downward, and the movement of the matching block 307 drives the movable rod 316 to move, and the movement of the movable rod 316 drives the movable plate 315 to move, and the movement of the movable plate 315 squeezes the spring 314, so that the fixed barrel 301 and the conical grinding roller 304 rotate to the bottom of the discharge pipe 15. At this time, the user uses the mounting plate 312 and the screw 313 to position the fixed barrel 301, and when the conical grinding roller 304 is completely When the coupling block 307 is fully moved to the bottom of the discharge pipe 15, the reaction force of the spring 314 causes the matching block 307 to enter the inner cavity of the matching groove 306. After the matching block 307 completely enters the inner cavity of the matching groove 306, the matching rod 305 will rotate through the crushing roller 16. The rotation of the matching rod 305 drives the matching block 307 to rotate. The rotation of the matching block 307 drives the conical grinding roller 304 to rotate. The conical grinding roller 304 rotates through the second bearing 310 and the fixed shaft 309. After the stone is crushed, it enters The inner cavity of the discharge pipe 15 then enters between the conical grinding roller 304 and the fixed barrel 301. The rotation of the conical grinding roller 304 grinds the stone to make the stone more regular in size and smaller in particles, thereby achieving the purpose of grinding the stone. After the stone is crushed, the stone can be ground into gravel with more regular size and smaller particles. When some stones do not meet the requirements, the operator does not need to re-crush these stones again, thereby reducing the working intensity of the crusher and further ensuring the service life of the crusher.

[0059] A method for using a stone crusher for civil engineering, the specific steps are as follows:

[0060] S1: When crushing stones, the user uses an external transmission device to drive the pulley 14 to rotate, the rotation of the pulley 14 drives the crushing roller 16 to rotate, the rotation of the crushing roller 16 drives the crushing rod 17 to rotate, wherein the rotation of the four crushing rods 17 drives the transmission rod 2117 to rotate, the rotation of the transmission rod 2117 drives the fixed block 2116 to rotate, the rotation of the fixed block 2116 drives the swivel 2106 to rotate, the rotation of the swivel 2106 drives the first limit rod 2114 to rotate in the inner cavity of the first guide groove 2103, and the first guide groove 2103 is driven by the first guide groove 2104. The first limiting rod 2114 is guided toward the groove 2103 to move forward and backward. The first limiting rod 2114 pulls the elastic protective pad 2113 to stretch while moving, and at the same time drives the connecting plate 2112 to move. The movement of the connecting plate 2112 drives the shell 2201 to move. The movement of the shell 2201 drives the powerful motor 2203 to move. The movement of the powerful motor 2203 drives the self-locking buckle 2204 to move. The movement of the self-locking buckle 2204 drives the turntable 2205 to move. The movement of the turntable 2205 drives the connecting rod 2206 to move. The movement of the connecting rod 2206 drives the outer cutting knife 2209 to move, and the movement of the outer cutting knife 2209 drives the inner cutting knife 2210 to move, so that the inner cutting knife 2210 and the outer cutting knife 2209 can move forward and backward. At the same time, during the movement of the shell 2201, the first telescopic rod 2109 is extended and retracted, and at the same time, the limiting plate 2107 is driven to move. The movement of the limiting plate 2107 drives the second limiting rod 2108 to move, so that the second limiting rod 2108 moves in the inner cavity of the second guide groove 2104. The second limiting rod 2108 is moved in a wave-like circular manner up and down, thereby driving the inner cutting knife 2210 and the outer cutting knife 2209 to move in a wave-like circular manner up and down. During the process of the inner cutting knife 2210 and the outer cutting knife 2209 moving in a wave-like circular manner up and down, the second telescopic rod 2115 is used to guide and retract the inner cutting knife 2210 and the outer cutting knife 2209. During the process of the shell 2201 moving forward and backward, the dovetail block 2110 and the dovetail groove 2111 are used in combination for guidance, thereby enabling the inner cutting knife 2210 and the outer cutting knife 2209 to move forward and backward during the process of the wave-like circular manner up and down.

[0061] S2: After completing the previous step, the user uses the external control switch and the battery to start the powerful motor 2203. The start of the powerful motor 2203 drives the self-locking buckle 2204 to rotate. The rotation of the self-locking buckle 2204 drives the turntable 2205 to rotate. The rotation of the turntable 2205 drives the connecting rod 2206 to rotate. The rotation of the connecting rod 2206 drives the outer cutting knife 2209 to rotate. During the rotation of the turntable 2205, the second bevel gear 2213 is driven to rotate. The rotation of the second bevel gear 2213 drives the first bevel gear 2214 to rotate. The rotation of the first bevel gear 2214 drives the inner cutting knife 2210 to rotate. The two inner cutting knives 2210 rotate through the first bearing 2218. The inner cutting knife 2210 is driven by the support rod 2 217, the mounting rod 2208, the mounting frame 2207, the positioning rod 2215, the positioning sleeve 2216 and the positioning groove 2219 are positioned and rotated, and no deflection or falling occurs during the rotation. During the rotation of the inner cutting knife 2210 and the outer cutting knife 2209, the inner cutting knife 2210 and the outer cutting knife 2209 can be moved forward and backward in the process of the wave-shaped up and down circular movement. At this time, the user puts the material into the outer shell 11 through the feed hopper 13. Some larger stones will be cut after being touched by the outer cutting knife 2209 and the inner cutting knife 2210, and cracks will be cut on the surface of the stone. Some smaller stones will also be cut when they touch the outer cutting knife 2209 and the inner cutting knife 2210. The cut stones will fall to the position of the crushing roller 16 and the crushing rod 17 for crushing;

[0062] S3: After the stone is crushed, if the user needs more regular and smaller particles of crushed stone, the user rotates the positioning shaft 311, and the rotation of the rotating plate 302 drives the fixed barrel 301 to rotate, and the rotation of the fixed barrel 301 drives the support seat 308 to rotate, and the rotation of the support seat 308 drives the conical grinding roller 304 to rotate, and the conical grinding roller 304 drives the matching block 307 to move during the rotation, and the matching block 307 will touch the discharge pipe 15 during the movement. Since one side of the matching block 307 is arranged in an arc shape, when it touches the discharge pipe 15, it will be squeezed and moved downward, and the movement of the matching block 307 drives the movable rod 316 to move, and the movement of the movable rod 316 drives the movable plate 315 to move, and the movement of the movable plate 315 squeezes the spring 314, so that the fixed barrel 301 and the conical grinding roller 304 rotate to the discharge pipe 15. The bottom of the crushing roller 16 is moved to the bottom of the crushing roller 16. At this time, the user uses the mounting plate 312 and the screw 313 to position the fixed barrel 301. When the conical grinding roller 304 is completely moved to the bottom of the discharge pipe 15, the reaction force of the spring 314 causes the matching block 307 to enter the inner cavity of the matching groove 306. After the matching block 307 completely enters the inner cavity of the matching groove 306, the matching rod 305 will rotate through the crushing roller 16. The rotation of the matching rod 305 drives the matching block 307 to rotate. The rotation of the matching block 307 drives the conical grinding roller 304 to rotate. The conical grinding roller 304 rotates through the second bearing 310 and the fixed shaft 309. After being crushed, the stone enters the inner cavity of the discharge pipe 15, and then enters between the conical grinding roller 304 and the fixed barrel 301. The rotation of the conical grinding roller 304 grinds the stone to make the size of the stone more regular and the particles smaller.

[0063] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stone crusher for civil engineering, comprising a main body (1), characterized in that: The main body mechanism (1) comprises a shell (11), a bracket (12) is fixedly mounted at the bottom of the shell (11), a crushing roller (16) is rotatably connected to the inner wall of the shell (11), a crushing rod (17) is fixedly mounted on the surface of the crushing roller (16), and the number of the crushing rods (17) is several, a pulley (14) is fixedly mounted on the top of the crushing roller (16), the pulley (14) is rotatably connected to the inner wall of the shell (11) through a bearing, and one end of the pulley (14) passes through the outside of the shell (11), a pre-treatment mechanism (2) is arranged in the inner cavity of the shell (11), and the pre-treatment mechanism (2) is arranged on the top of the crushing roller (16), a discharge pipe (15) is fixedly mounted at the bottom of the shell (11), and a feed hopper (13) is fixedly mounted on the top of the shell (11), and the number of the feed hoppers (13) is two; The pre-treatment mechanism (2) comprises a guide unit (21), wherein the guide unit (21) is arranged in the inner cavity of the housing (11), and the guide unit (21) is located on the top of the crushing roller (16); The pre-processing mechanism (2) further comprises a cutting unit (22), wherein the cutting unit (22) is arranged inside the guide unit (21), and the cutting unit (22) is used in conjunction with the guide unit (21), and the cutting unit (22) and the guide unit (21) are used to perform cutting pre-processing on larger crushed stones; A grinding mechanism (3) is provided at the bottom of the discharge pipe (15). The grinding mechanism (3) is used in conjunction with a cutting unit (22). The grinding mechanism (3) is used to grind crushed stones.

2. A stone crusher for civil engineering according to claim 1, characterized in that: The cutting unit (22) comprises a shell (2201), the number of the shells (2201) is four and they are evenly distributed in the inner cavity of the shell (11) in a ring shape, a powerful motor (2203) is fixedly installed on the inner wall of the shell (2201), the output end of the powerful motor (2203) passes through the outer side of the shell (2201) and is clamped with a turntable (2205), an external cutting knife (2209) is arranged on one side of the turntable (2205), a connecting rod (2206) is fixedly installed on one side of the turntable (2205), the number of the connecting rods (2206) is several, one end of the connecting rod (2206) is fixedly connected to one side of the external cutting knife (2209), and the external The inner cutting knife (2209) is rotatably connected to an inner cutting knife (2210), and the number of the inner cutting knives (2210) is two. A first bevel gear (2214) is fixedly installed on the inner wall of the inner cutting knife (2210), and a second bevel gear (2213) is fixedly installed on one side of the turntable (2205), and the first bevel gear (2214) is meshed with the second bevel gear (2213). The outer cutting knife (2209) and the inner cutting knife (2210) are both made of cemented carbide material, and a protective sleeve (2202) is fixedly installed on one side of the shell (2201), and the protective sleeve (2202) is sleeved on the output shaft of the powerful motor (2203) and the surface of the turntable (2205).

3. A stone crusher for civil engineering according to claim 2, characterized in that: A positioning rod (2215) is fixedly installed on one side of the first bevel gear (2214), and a positioning groove (2219) is provided on the inner wall of the external cutting knife (2209) for use with the positioning rod (2215). A positioning sleeve (2216) is fixedly installed on the surface of the positioning rod (2215), and one end of the positioning sleeve (2216) contacts the inner wall of the external cutting knife (2209). A first bearing (2218) is fixedly installed between the opposite sides of the two first bevel gears (2214), and one side of the inner ring and the outer ring of the first bearing (2218) are respectively fixedly connected to the two first bevel gears (2214).

4. A stone crusher for civil engineering according to claim 3, characterized in that: A support rod (2217) is fixedly installed on the surface of the positioning sleeve (2216), a mounting rod (2208) is fixedly installed on one side of the support rod (2217), a mounting frame (2207) is fixedly installed on one side of the mounting rod (2208), and the mounting frame (2207) is fixedly installed on one side of the housing (2201) by bolts, a mounting seat (2212) is fixedly installed between one side of the two support rods (2217), a dust cover (2211) is fixedly installed on one side of the mounting seat (2212), and the dust cover (2211) is sleeved on the surfaces of the first bevel gear (2214) and the second bevel gear (2213), and a self-locking buckle (2204) is fixedly installed on the output end of the powerful motor (2203), and the powerful motor (2203) is clamped with the turntable (2205) via the self-locking buckle (2204).

5. A stone crusher for civil engineering according to claim 2, characterized in that: The guide unit (21) comprises a fixing plate (2101), the fixing plate (2101) is fixedly mounted on the inner wall of the housing (11), a support ring (2102) is fixedly mounted on the top of the fixing plate (2101), a rotating ring (2106) is rotatably connected to the top of the fixing plate (2101), a fixing block (2116) is fixedly mounted on the inner wall of the rotating ring (2106), and the number of the fixing blocks (2116) is four. A transmission rod (2117) is fixedly installed at the bottom of the support ring (2102), one end of each of the four transmission rods (2117) is fixedly connected to the top of each of the four crushing rods (17), a first guide groove (2103) is provided on the top of the fixing plate (2101), a second guide groove (2104) is provided on the inner wall of the support ring (2102), the first guide groove (2103) and the second guide groove (2104) are both in a concave T-shaped arrangement, and the housing (220 1), a connecting plate (2112) is fixedly installed at the bottom of the connecting plate (2112), a first limiting rod (2114) is fixedly installed at the bottom of the connecting plate (2112), one end of the first limiting rod (2114) passes through the rotating ring (2106) and extends to the inner cavity of the first guide groove (2103), a guide plate (2105) is fixedly installed at the top of the shell (2201), a first telescopic rod (2109) is fixedly installed on one side of the guide plate (2105), and the first A limit plate (2107) is fixedly installed on one end of the inner rod of the telescopic rod (2109), a second limit rod (2108) is fixedly installed on one side of the limit plate (2107), the second limit rod (2108) is slidably installed in the inner cavity of the second guide groove (2104), a second telescopic rod (2115) is fixedly installed on the top of the rotating ring (2106), and one end of the inner rod of the second telescopic rod (2115) is slidably connected to the bottom of the guide plate (2105).

6. A stone crusher for civil engineering according to claim 5, characterized in that: A dovetail block (2110) is fixedly installed at one end of the inner rod of the second telescopic rod (2115), a dovetail groove (2111) for use with the dovetail block (2110) is provided at the bottom of the guide plate (2105), and an elastic protective pad (2113) is fixedly installed on the surface of the first limiting rod (2114), and one side of the elastic protective pad (2113) is fixedly connected to the support ring (2102).

7. A stone crusher for civil engineering according to claim 1, characterized in that: The grinding mechanism (3) comprises a fixed barrel (301), the fixed barrel (301) is arranged at the bottom of the discharge pipe (15), the fixed barrel (301) is rotatably connected to the bottom of the outer shell (11), the inner cavity of the fixed barrel (301) is rotatably connected to a conical grinding roller (304), the bottom of the conical grinding roller (304) is rotatably connected to a support seat (308), one side of the support seat (308) is fixedly installed on one side of the fixed barrel (301), the top of the conical grinding roller (304) is slidably installed with a matching block (307), and the crushing roller A matching rod (305) is fixedly installed at the bottom of (16), and a matching groove (306) for matching with a matching block (307) is opened at one end of the matching rod (305), and one side of the matching block (307) is arranged in an arc shape. A fixed shaft (309) is fixedly installed at the bottom of the conical grinding roller (304), and a second bearing (310) is fixedly installed on the surface of the fixed shaft (309). The surface of the outer ring of the second bearing (310) is fixedly installed on the inner wall of the support seat (308), and the surface of the conical grinding roller (304) is arranged in a threaded manner.

8. A stone crusher for civil engineering according to claim 7, characterized in that: A fixing column (303) is fixedly installed at the bottom of the shell (11), one end of the fixing column (303) is rotatably connected to a rotating plate (302), one end of the fixing column (303) is fixedly installed with a positioning shaft (311), the rotating plate (302) is sleeved on the surface of the positioning shaft (311), one side of the rotating plate (302) is fixedly installed on the surface of the fixed barrel (301), the surface of the fixed barrel (301) is fixedly installed with a mounting plate (312), the inner wall of the mounting plate (312) is threadedly connected with a screw (313), and the screw (313) is threadedly connected to the inner wall of the discharge pipe (15).

9. A stone crusher for civil engineering according to claim 7, characterized in that: A movable rod (316) is fixedly installed at the bottom of the matching block (307), one end of the movable rod (316) penetrates into the inner cavity of the conical grinding roller (304) and is fixedly installed with a movable plate (315), and a spring (314) is fixedly installed at the bottom of the movable plate (315), and one end of the spring (314) is fixedly installed on the inner wall of the conical grinding roller (304).

10. A method for using a stone crusher for civil engineering according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: S1: When crushing stones, the user uses an external transmission device to drive the pulley (14) to rotate, the rotation of the pulley (14) drives the crushing roller (16) to rotate, the rotation of the crushing roller (16) drives the crushing rod (17) to rotate, wherein the rotation of the four crushing rods (17) drives the transmission rod (2117) to rotate, the rotation of the transmission rod (2117) drives the fixed block (2116) to rotate, the rotation of the fixed block (2116) drives the rotating ring (2106) to rotate, the rotation of the rotating ring (2106) drives the first limit rod (2114) to rotate in the inner cavity of the first guide groove (2103), and the first limit rod (2114) is driven to rotate through the first The guidance of the guide groove (2103) causes the first limiting rod (2114) to move forward and backward. The first limiting rod (2114) pulls the elastic protective pad (2113) to stretch while moving, and drives the connecting plate (2112) to move. The movement of the connecting plate (2112) drives the shell (2201) to move. The movement of the shell (2201) drives the powerful motor (2203) to move. The movement of the powerful motor (2203) drives the self-locking buckle (2204) to move. The movement of the self-locking buckle (2204) drives the rotating disk (2205) to move. The movement of the rotating disk (2205) drives the connecting rod (2206) to move. The movement of the connecting rod (2206) drives the outer cutting knife (2209) to move, and the movement of the outer cutting knife (2209) drives the inner cutting knife (2210) to move, so that the inner cutting knife (2210) and the outer cutting knife (2209) can move forward and backward. At the same time, during the movement of the shell (2201), the first telescopic rod (2109) is extended and retracted, and at the same time, the limiting plate (2107) is driven to move. The movement of the limiting plate (2107) drives the second limiting rod (2108) to move, so that the second limiting rod (2108) moves in the inner cavity of the second guide groove (2104). 104) guides the second limit rod (2108) to move up and down in a wave-like circular motion, thereby driving the inner cutting knife (2210) and the outer cutting knife (2209) to move up and down in a wave-like circular motion. During the process of the inner cutting knife (2210) and the outer cutting knife (2209) moving up and down in a wave-like circular motion, the second telescopic rod (2115) guides and retracts the inner cutting knife (2210) and the outer cutting knife (2209) to move up and down in a wave-like circular motion. During the process of the shell (2201) moving forward and backward, the dovetail block (2110) and the dovetail groove (2111) are used in combination for guidance, thereby enabling the inner cutting knife (2210) and the outer cutting knife (2209) to move forward and backward during the process of the inner cutting knife (2210) and the outer cutting knife (2209) moving up and down in a wave-like circular motion. S2: After completing the previous step, the user uses an external control switch and a battery to start the powerful motor (2203). The start of the powerful motor (2203) drives the self-locking buckle (2204) to rotate. The rotation of the self-locking buckle (2204) drives the turntable (2205) to rotate. The rotation of the turntable (2205) drives the connecting rod (2206) to rotate. The rotation of the connecting rod (2206) drives the outer cutting knife (2209) to rotate. During the rotation of the turntable (2205), the second bevel gear (2213) is driven to rotate. The rotation of the second bevel gear (2213) drives the first bevel gear (2214) to rotate. The rotation of the first bevel gear (2214) drives the inner cutting knife (2210) to rotate. The two inner cutting knives (2210) rotate through the first bearing (2218). The inner cutting knife (2210) is supported by the support. The support rod (2217), the mounting rod (2208), the mounting frame (2207), the positioning rod (2215), the positioning sleeve (2216) and the positioning groove (2219) are positioned and rotated, and no deflection or falling occurs during the rotation. During the rotation of the inner cutting knife (2210) and the outer cutting knife (2209), the inner cutting knife (2209) can be moved forward and backward while performing the wave-like up and down circular movement. At this time, the user places the material into the outer shell (11) through the feed hopper (13). Some larger stones will be cut after being touched by the outer cutting knife (2209) and the inner cutting knife (2210), and cracks will be cut on the surface of the stone. Some smaller stones will also be cut when they touch the outer cutting knife (2209) and the inner cutting knife (2210). The cut stones will fall to the position of the crushing roller (16) and the crushing rod (17) for crushing. S3: After the stone is crushed, if the user needs more regular and smaller stone particles, the user rotates the positioning shaft (311), the rotation of the rotating plate (302) drives the fixed barrel (301) to rotate, the rotation of the fixed barrel (301) drives the support seat (308) to rotate, the rotation of the support seat (308) drives the conical grinding roller (304) to rotate, and the conical grinding roller (304) drives the matching block (307) to move during the rotation process, and the matching block (307) 07) will touch the discharge pipe (15) during the movement. Since one side of the matching block (307) is arranged in an arc shape, when it touches the discharge pipe (15), it will be squeezed and moved downward. The movement of the matching block (307) drives the movable rod (316) to move. The movement of the movable rod (316) drives the movable plate (315) to move. The movement of the movable plate (315) squeezes the spring (314), so that the fixed barrel (301) and the conical grinding roller (304) rotate to the discharge pipe (15). At this time, the user uses the mounting plate (312) and the screw (313) to position the fixed barrel (301). When the conical grinding roller (304) is completely moved to the bottom of the discharge pipe (15), the reaction force of the spring (314) causes the matching block (307) to enter the inner cavity of the matching groove (306). After the matching block (307) is completely entered into the inner cavity of the matching groove (306), the matching rod (305) is rotated by the crushing roller (16). ) rotates, and the rotation of the matching block (307) drives the conical grinding roller (304) to rotate. The conical grinding roller (304) rotates through the second bearing (310) and the fixed shaft (309). After being crushed, the stone enters the inner cavity of the discharge pipe (15), and then enters between the conical grinding roller (304) and the fixed barrel (301). The rotation of the conical grinding roller (304) grinds the stone, making the size of the stone more regular and the particles smaller.

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