Crushing device for earthwork construction

Abstract

The present invention relates to the technical field of crushing for earthwork construction, and discloses a crushing device for earthwork construction, including a screening assembly installed inside a shell and extending to the outside of the shell, a chute is provided on the outside of the shell, a third spring for resetting the screening assembly is installed inside the chute, the screening assembly includes an anti-blocking shaking structure, the screening assembly is located below the rolling assembly, and the screening assembly is located between the internal ports of the large block discharge port and the small block discharge port. The present invention uses the setting of the anti-blocking shaking structure, in the process of screening large and small earthworks through the screen, there may be small earthworks with the same caliber size as the size of the screen hole, causing blockage to the screen, and in the process of the screen moving up and down, the screen touches the steel ball, the second spring gives the steel ball a certain elasticity, the steel ball collides with the surface of the screen, causing the screen surface to shake, and the small earthworks that cause blockage are shaken off, thereby solving the problem of small earthworks blocking the screen.

Description

Technical Field

[0001] The invention relates to the technical field of crushing equipment for earthwork construction, in particular to a crushing device for earthwork construction. Background Art

[0002] Crushing equipment for earthwork construction refers to mechanical equipment used to crush and split hard materials such as rocks or concrete in earthwork projects. Such equipment usually includes hydraulic splitters, breaker hammers, impact hammers, etc., each of which has different working principles and usage scenarios.

[0003] Chinese Patent: Application number CN202322552587.4, discloses a stone crushing device for earthwork engineering construction, including a stone crusher, a separation box is fixedly connected to the bottom of the frame, and support rods are fixedly connected to the four corners of the bottom of the separation box, and the bottom of the support rod is fixedly connected to the bottom plate, and the surface of the bottom plate is fixedly connected to the support frame, and the surface of the support frame is fixedly connected to the second motor, and the inner side of the support frame is rotatably connected to the second rotating shaft, and the output shaft of the second motor is fixedly connected to one end of the second rotating shaft located on the front side, and the surface of the second rotating shaft is connected to the second conveyor belt in a transmission manner, and the inner wall of the separation box is fixedly connected to a filter net, and a throwing port is opened on the side of the separation box. The utility model screens the stones through the filtration of the filter net, thereby solving the problem of secondary screening during use. At the same time, the utility model drives the stones to the feed port through the rotation of the second conveyor belt, thereby solving the problem of low stone crushing efficiency;

[0004] Although such an arrangement solves the problem of requiring secondary screening during use, the utility model drives the stones to the feed port by the rotation of the second conveyor belt, thereby solving the problem of low stone crushing efficiency. However, during the screening process, there may be smaller stones with the same diameter as the holes in the filter, thereby causing the filter to be blocked. Summary of the invention

[0005] The object of the present invention is to provide a crushing device for earthwork construction to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is a crushing device for earthwork construction, comprising a shell and a crushing drive assembly, wherein the crushing drive assembly is installed inside the shell and extends to the outside, a feed port is arranged at the top of the shell, a large-piece discharge port and a small-piece discharge port are arranged at the bottom of the shell, a bottom frame for support is installed at the bottom of the shell, a collision assembly is installed on the top outer wall of the shell and extends to the inside of the shell, and when the crushing drive assembly is in operation, the collision assembly collides with the crushing drive assembly;

[0008] An air flow component is installed on the outer wall of the shell, and the crushing drive component drives the air flow component. When the crushing drive component is running, the air flow component dissipates heat for the crushing drive component;

[0009] The shell body is provided with an arc-shaped shell, the arc-shaped shell is provided with a plurality of first elongated through holes, a rolling assembly is installed inside the shell body and extends to the outside of the shell body, and the collision assembly drives the rolling assembly intermittently;

[0010] A screening assembly is installed inside the housing and extends to the outside of the housing. A slide groove is provided on the outside of the housing. A third spring for resetting the screening assembly is installed inside the slide groove.

[0011] The screening assembly includes an anti-blocking shaking structure, and the screening assembly is located below the rolling assembly, and the screening assembly is located between the large block discharge port and the internal port of the small block discharge port.

[0012] First, the crushing drive assembly is operated to put the earth and stone into the shell through the feed port. The crushing drive assembly drives the earth and stone to move inside the shell. The earth and stone are between the crushing drive assembly and the shell and are squeezed and crushed. The crushing drive assembly and the collision assembly collide and cooperate to squeeze and crush the earth and stone again. During this process, the collision assembly drives the rolling assembly to move. The crushed earth and stone pass through the first elongated through hole. When the rolling assembly moves, it approaches the arc shell and squeezes and crushes the fallen earth and stone again.

[0013] The crushed earth and stone fall to the screening component, which screens earth and stone of different sizes. The large earth and stone are discharged through the large-piece outlet, and the small earth and stone are discharged through the small-piece outlet. During the operation of the screening component, the anti-blocking shaking structure shakes the screening component to prevent the screening component from being blocked and affecting the screening effect.

[0014] Furthermore, the feed port is at the top of the shell and is inclined toward the inside of the shell. The crushing drive assembly includes a motor, which is mounted on the outer wall of the shell. The output shaft of the motor passes through the inside of the shell. A column is mounted on the output shaft of the motor. A plurality of hammers are mounted on the outer wall of the column. The hammers are close to the inner wall of the shell. A through hole is opened on the outer wall of the hammer.

[0015] The output shaft of the motor drives the column and the hammer to rotate counterclockwise, and the hammer drives the earth and stone to move. The earth and stone are squeezed between the hammer and the inner wall of the shell, thereby crushing the earth and stone. The through hole is set to facilitate air flow through the hammer to dissipate heat to the hammer.

[0016] Further, the collision assembly includes a sliding cavity, the sliding cavity is installed on the top outer wall of the shell, two first springs are installed inside the sliding cavity, a sliding protrusion is slidably connected to the inner wall of the sliding cavity and extends to the inside of the shell, and the top of the sliding protrusion is provided with an inclined surface,

[0017] When the column drives the hammer to move counterclockwise, the hammer collides and pushes the inclined surface of the sliding protrusion. After the sliding protrusion is squeezed and pushed, the sliding protrusion squeezes the first spring and retracts into the sliding cavity. After the hammer passes the sliding protrusion, the first spring resets the sliding protrusion, and the cycle is repeated in sequence. The hammer collides with the inclined surface of the sliding protrusion to impact and crush the earth and stone again.

[0018] Furthermore, the air flow component includes a cylinder, which is mounted on the outer wall of the shell and is connected, and two filters are installed inside the cylinder, one of which is located at a port between the cylinder and the shell, and the other is located at an outer port of the cylinder.

[0019] Two filters filter out dust and also allow air flow.

[0020] Furthermore, the output shaft of the motor extends to the inside of the cylinder, and eight brush rods are installed on the outer wall of the motor, four in a group, and two groups of brush rods are respectively close to the filter screens on both sides of the cylinder, and fan blades are installed on the outer wall of the motor;

[0021] The bottom of the cylinder is connected to the small piece discharge port.

[0022] The fan blades are driven to rotate by the output shaft of the motor, and the airflow enters the interior of the shell through the feed port. During the rotation of the hammer, part of the airflow passes through the through hole to dissipate the heat of the hammer, and the airflow enters the interior of the cylinder through the filter and is discharged through the cylinder.

[0023] At the same time, the motor drives two sets of brush rods to rotate to clean the filter screens on both sides. The cleaned dust is affected by the airflow, passes through the channel extending from the bottom of the cylinder, flows to the small piece discharge port, and is discharged along with the small earth and stone.

[0024] Furthermore, the rolling assembly includes a transmission rod, two of the transmission rods are connected to the sliding protrusion through the sliding cavity respectively, and the two transmission rods are slidably connected to the sliding cavity;

[0025] The transmission rod passes through the housing and extends to the inside of the housing, and is slidably connected. The bottom ends of the two transmission rods are respectively connected to trigger rods, and an arc plate is installed between the two transmission rods.

[0026] During the movement of the sliding protrusion, the arc plate is driven to move by the transmission rod, the sliding protrusion is intermittently collided and pushed by the hammer, and the transmission rod intermittently drives the trigger rod to approach the connecting block.

[0027] Furthermore, the arc-shaped shell is located outside the hammer body, and a plurality of long strips are fixedly connected to the outer wall of the arc-shaped shell;

[0028] The arc-shaped plate is provided with a plurality of second elongated through holes, and two inclined plates are installed on the inner walls of both sides of the second elongated through holes.

[0029] The arc plate approaches the first elongated through hole and the long strip block of the arc shell in an inclined manner, and the long strip block approaches the inside of the second elongated through hole and cooperates with the two inclined plates to squeeze and crush the earth and stone again.

[0030] Further, the screening assembly includes a screen, which is slidably connected to the bottom inner wall of the shell, and connecting blocks are connected to both sides of the screen, and the connecting blocks are slidably connected to the inner wall of the slide groove through the shell, and the connecting block is above the third spring, and the top of the connecting block is set as an arc-shaped inclined surface block, which cooperates with the trigger rod.

[0031] When the trigger rod approaches the connecting block and squeezes and pushes the connecting block, the connecting block drives the screen to slide downward. When the trigger rod retreats, the third spring resets the connecting block, thereby allowing the screen to move up and down repeatedly.

[0032] Furthermore, the screen is tilted toward the port of the bulk material outlet.

[0033] The inclination angle of the screen is small. The reason for the inclination is that when the screen moves up and down, the large earth and stone jumping on the surface of the screen can follow this slope and be discharged to the large-piece discharge port, and the smaller earth and stone can pass through the screen and be discharged to the small-piece discharge port, thereby screening the large and small earth and stone.

[0034] Further, the anti-blocking shaking structure is provided in two groups, and the two groups of the anti-blocking shaking structure respectively include a second spring and three steel balls, the three steel balls are connected by the second spring, and the second spring is connected to the inner wall of the shell;

[0035] One group of anti-blocking shaking structures is located on the upper surface of one end of the screen, and the other group of anti-blocking shaking structures is located on the lower surface of one end of the screen.

[0036] In the process of screening large and small earth and stone blocks through the screen, there may be small earth and stone blocks with the same diameter as the size of the screen holes, causing the screen to be blocked. During the up and down movement of the screen, the screen touches the steel ball. The second spring gives the steel ball a certain elasticity, and the steel ball collides with the surface of the screen, causing the screen surface to shake, shaking off the small earth and stone blocks that cause the blockage, thereby solving the problem of small earth and stone blocks blocking the screen.

[0037] The present invention has the following beneficial effects:

[0038] (1) The present invention sets an anti-blocking shaking structure. In the process of screening large and small earth and stone blocks through the screen, there may be small earth and stone blocks with the same diameter as the screen hole size, causing blockage of the screen. During the up and down movement of the screen, the screen touches the steel ball. The second spring gives the steel ball a certain elasticity, and the steel ball collides with the surface of the screen, causing the screen surface to shake, shaking off the small earth and stone blocks that cause blockage, thereby solving the problem of small earth and stone blocks blocking the screen.

[0039] (2) The present invention sets a screen so that the screen is tilted toward the port of the large-block discharge port. The tilt angle of the screen is small. The reason for the certain tilt is that when the screen moves up and down, the large earth and stone jumping on the surface of the screen can follow this slope and be discharged toward the large-block discharge port, and the smaller earth and stone can pass through the screen and be discharged toward the small-block discharge port, thereby screening the large and small earth and stone.

[0040] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0043] Figure 2 It is a schematic diagram of the heat dissipation structure of the present invention;

[0044] Figure 3 This is a schematic diagram of the crushing and heat dissipation structure of the present invention;

[0045] Figure 4 It is a partial structural schematic diagram of the present invention;

[0046] Figure 5 It is a schematic diagram of the screening structure of the present invention;

[0047] Figure 6 It is a schematic diagram of the shell structure of the present invention;

[0048] Figure 7 It is a schematic diagram of the rolling structure of the present invention;

[0049] Figure 8 This is a schematic diagram of the internal structure of the housing of the present invention;

[0050] Fig. 9 It is a schematic diagram of the movement of the arc plate of the present invention;

[0051] Fig.10 A schematic diagram of the structure of the first elongated through hole and the second elongated through hole of the present invention;

[0052] Fig.11 This is a schematic diagram of the crushing, heat dissipation and screening structure of the present invention;

[0053] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0054] In the figure: 1, shell; 101, first elongated through hole; 102, long strip; 2, base frame; 3, crushing drive assembly; 301, motor; 302, column; 303, hammer; 3030, through hole; 4, air flow assembly; 401, cylinder; 4010, filter; 402, fan blade; 403, brush rod; 5, collision assembly; 501, sliding cavity; 502, first spring; 503, sliding protrusion; 6, feed inlet; 7, large piece discharge port; 8, small piece discharge port; 9, screening assembly; 901, screen; 902, connecting block; 903, second spring; 904, steel ball; 10, rolling assembly; 1001, transmission rod; 1002, trigger rod; 1003, arc plate; 10030, second elongated through hole; 10031, inclined plate; 11, third spring. DETAILED DESCRIPTION

[0055] 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.

[0056] The present invention is a crushing device for earthwork construction, such as Figure 1 - Fig.11As shown, it comprises a shell 1 and a crushing drive assembly 3, the crushing drive assembly 3 is installed inside the shell 1 and extends to the outside, a feed port 6 is arranged at the top of the shell 1, a large-piece discharge port 7 and a small-piece discharge port 8 are arranged at the bottom of the shell 1, a bottom frame 2 for support is installed at the bottom of the shell 1, a collision assembly 5 is installed on the top outer wall of the shell 1 and extends to the inside of the shell 1, and when the crushing drive assembly 3 is in operation, the collision assembly 5 collides with the crushing drive assembly 3;

[0057] An air flow component 4 is installed on the outer wall of the housing 1, and the crushing drive component 3 drives the air flow component 4. When the crushing drive component 3 is running, the air flow component 4 dissipates heat for the crushing drive component 3;

[0058] The shell 1 is provided with an arc-shaped shell, and the arc-shaped shell is provided with a plurality of first elongated through holes 101. The shell 1 is provided with a rolling assembly 10 which extends to the outside of the shell 1. The collision assembly 5 drives the rolling assembly 10 intermittently.

[0059] A screening assembly 9 is installed inside the housing 1 and extends to the outside of the housing 1. A slide groove is provided on the outside of the housing 1. A third spring 11 for resetting the screening assembly 9 is installed inside the slide groove.

[0060] The screening component 9 includes an anti-blocking shaking structure. The screening component 9 is located below the rolling component 10. The screening component 9 is located between the inner ports of the large-piece discharge port 7 and the small-piece discharge port 8.

[0061] In this embodiment, the purpose of the above arrangement is to first operate the crushing drive assembly 3, put the earth and stone into the shell 1 through the feed port 6, and the crushing drive assembly 3 drives the earth and stone to move inside the shell 1. The earth and stone are between the crushing drive assembly 3 and the shell 1 and are squeezed and crushed. The crushing drive assembly 3 and the collision assembly 5 collide and cooperate to squeeze and crush the earth and stone again. In this process, the collision assembly 5 drives the rolling assembly 10 to move, and the crushed earth and stone pass through the first elongated through hole 101. When the rolling assembly 10 moves, it approaches the arc shell and squeezes and crushes the fallen earth and stone again.

[0062] The crushed earth and stone fall to the screening component 9, which screens earth and stone of different sizes. The large earth and stone are discharged through the large piece discharge port 7, and the small earth and stone are discharged through the small piece discharge port 8. During the operation of the screening component 9, the anti-blocking shaking structure shakes the screening component 9 to prevent the screening component 9 from being blocked and affecting the screening effect.

[0063] As an implementation method, Figure 3 As shown, further:

[0064] The feed port 6 is at the top of the shell 1 and is inclined toward the inside of the shell 1. The crushing drive assembly 3 includes a motor 301, which is mounted on the outer wall of the shell 1. The output shaft of the motor 301 passes through the inside of the shell 1. A column 302 is mounted on the output shaft of the motor 301. A plurality of hammers 303 are mounted on the outer wall of the column 302. The hammers 303 are close to the inner wall of the shell 1. A through hole 3030 is opened on the outer wall of the hammer 303.

[0065] In this embodiment, the purpose of the above arrangement is to drive the column 302 and the hammer 303 to rotate counterclockwise through the output shaft of the motor 301. Figure 8 The hammer body 303 drives the earth and stone to move, and the earth and stone are squeezed between the hammer body 303 and the inner wall of the shell 1, so as to crush the earth and stone. The through hole 3030 is arranged to facilitate air flow through the hammer body 303 to dissipate heat of the hammer body 303.

[0066] As an implementation method, Figure 6 - Figure 7 As shown, further:

[0067] The collision assembly 5 includes a sliding cavity 501, which is mounted on the top outer wall of the housing 1. Two first springs 502 are mounted inside the sliding cavity 501. A sliding protrusion 503 is slidably connected to the inner wall of the sliding cavity 501 and extends toward the inside of the housing 1. The top of the sliding protrusion 503 is provided with an inclined surface.

[0068] In this embodiment, the purpose of the above-mentioned arrangement is that when the column 302 drives the hammer body 303 to move counterclockwise, the hammer body 303 collides and pushes the inclined surface of the sliding protrusion 503. After the sliding protrusion 503 is squeezed and pushed, the sliding protrusion 503 squeezes the first spring 502 and retracts into the sliding cavity 501. After the hammer body 303 passes the sliding protrusion 503, the first spring 502 resets the sliding protrusion 503, and the cycle is repeated in sequence. The hammer body 303 collides with the inclined surface of the sliding protrusion 503 to impact and crush the earth and stone again.

[0069] As an implementation method, Figure 1 - Figure 2 As shown, further:

[0070] The air flow component 4 includes a cylinder 401, which is mounted on the outer wall of the housing 1 and connected. Two filters 4010 are installed inside the cylinder 401, one of which is located at a port between the cylinder 401 and the housing 1, and the other is located at an outer port of the cylinder 401.

[0071] In this embodiment, the purpose of the above arrangement is that the two filters 4010 filter dust and are used for air circulation at the same time.

[0072] As an implementation method, Figure 2 - Figure 3 As shown, further:

[0073] The output shaft of the motor 301 extends to the inside of the cylinder 401. Eight brush rods 403 are installed on the outer wall of the motor 301, four in a group, and two groups of brush rods 403 are respectively close to the filter screen 4010 on both sides of the cylinder 401. Fan blades 402 are installed on the outer wall of the motor 301;

[0074] The bottom of the cylinder 401 is connected to the small piece discharge port 8.

[0075] In this embodiment, the purpose of the above arrangement is to drive the fan blade 402 to rotate through the output shaft of the motor 301, and the airflow enters the interior of the housing 1 through the feed port 6. During the rotation of the hammer body 303, part of the airflow passes through the through hole 3030 to dissipate heat for the hammer body 303, and the airflow enters the interior of the cylinder 401 through the filter screen 4010 and is discharged through the cylinder 401.

[0076] At the same time, the motor 301 drives the two sets of brush rods 403 to rotate to clean the filter screens 4010 on both sides. The cleaned dust is affected by the airflow and flows through the channel extending from the bottom of the cylinder 401 to the small piece discharge port 8, and is discharged along with the small earth and stone.

[0077] As an implementation method, Figure 6 - Figure 7 As shown, further:

[0078] The rolling assembly 10 includes a transmission rod 1001, and the two transmission rods 1001 are connected to the sliding protrusion 503 through the sliding cavity 501 respectively, and the two transmission rods 1001 are slidably connected to the sliding cavity 501;

[0079] The transmission rod 1001 penetrates the housing 1 and extends to the inside of the housing 1 and is slidably connected. The bottom ends of the two transmission rods 1001 are respectively connected to the trigger rods 1002. An arc plate 1003 is installed between the two transmission rods 1001.

[0080] In this embodiment, the purpose of the above-mentioned setting is that during the movement of the sliding protrusion 503, the arc plate 1003 is driven to move by the transmission rod 1001, the sliding protrusion 503 is intermittently collided and pushed by the hammer body 303, and the transmission rod 1001 intermittently drives the trigger rod 1002 to approach the connecting block 902.

[0081] As an implementation method, Fig.10As shown, further:

[0082] The arc-shaped shell is located outside the hammer body 303, and a plurality of long strips 102 are fixedly connected to the outer wall of the arc-shaped shell;

[0083] The arc plate 1003 is provided with a plurality of second elongated through holes 10030, and two inclined plates 10031 are installed on the inner walls of both sides of the second elongated through holes 10030.

[0084] In this embodiment, the purpose of the above arrangement is to make the arc plate 1003 approach the first elongated through hole 101 and the elongated block 102 of the arc shell in an inclined manner, and Fig.10 The long strip block 102 is close to the inside of the second long through hole 10030 and cooperates with the two inclined plates 10031 to squeeze and crush the earth and stone again.

[0085] As an implementation method, Figure 4 - Figure 5 As shown, further:

[0086] The screening assembly 9 includes a screen 901, which is slidably connected to the bottom inner wall of the housing 1. Connecting blocks 902 are connected to both sides of the screen 901. The connecting blocks 902 are slidably connected to the inner wall of the slide groove through the housing 1. The connecting blocks 902 are located above the third spring 11. The top of the connecting block 902 is set as an arc-shaped inclined surface block, which cooperates with the trigger rod 1002.

[0087] In this embodiment, the purpose of the above-mentioned setting is that when the trigger rod 1002 approaches the connecting block 902 and squeezes and pushes the connecting block 902, the connecting block 902 drives the screen 901 to slide downward. When the trigger rod 1002 retreats, the third spring 11 resets the connecting block 902, thereby allowing the screen 901 to move up and down repeatedly.

[0088] As an implementation method, Figure 5 As shown, further:

[0089] The screen 901 is tilted toward the port of the bulk material outlet 7.

[0090] In this embodiment, the purpose of the above-mentioned setting is that the inclination angle of the screen 901 is relatively small. The certain inclination is so that when the screen 901 moves up and down, the large earth and rocks jumping on the upper surface of the screen 901 can follow this slope and be discharged to the large piece discharge port 7, and the smaller earth and rocks can be discharged to the small piece discharge port 8 through the screen 901, thereby screening the large and small earth and rocks.

[0091] As an implementation method, Figure 5 As shown, further:

[0092] The anti-blocking shaking structure is provided in two groups, and the two groups of anti-blocking shaking structures respectively include a second spring 903 and three steel balls 904, the three steel balls 904 are connected through the second spring 903, and the second spring 903 is connected to the inner wall of the housing 1;

[0093] One set of anti-blocking shaking structures is on the upper surface of one end of the screen 901, and the other set of anti-blocking shaking structures is on the lower surface of one end of the screen 901.

[0094] In this embodiment, the purpose of the above-mentioned setting is that in the process of screening large and small earth and rocks through the screen 901, there may be small earth and rocks with the same caliber as the hole size of the screen 901, causing blockage of the screen 901. In the process of the up and down movement of the screen 901, the screen 901 touches the steel ball 904, and the second spring 903 gives the steel ball 904 a certain elasticity. The steel ball 904 collides with the surface of the screen 901, causing the surface of the screen 901 to shake, and the small earth and rocks that cause the blockage will be shaken off, thereby solving the problem of small earth and rocks blocking the screen 901.

[0095] Working principle: First, the motor 301 is operated, and the output shaft of the motor 301 drives the column 302 and the hammer 303 to rotate counterclockwise, and the earth and stone are put into the interior of the shell 1 through the feed port 6. The feed port 6 is at the top of the shell 1 and is inclined toward the inside of the shell 1 to prevent the earth and stone from flying out. The hammer 303 drives the earth and stone to move, and the earth and stone are squeezed between the hammer 303 and the inner wall of the shell 1, thereby crushing the earth and stone. When the column 302 drives the hammer counterclockwise, the hammer When the body 303 moves, the hammer body 303 collides and pushes the inclined surface of the sliding protrusion 503. After the sliding protrusion 503 is squeezed and pushed, the sliding protrusion 503 squeezes the first spring 502 and retracts into the sliding cavity 501. After the hammer body 303 passes the sliding protrusion 503, the first spring 502 resets the sliding protrusion 503. The cycle is repeated in sequence. The hammer body 303 collides with the inclined surface of the sliding protrusion 503 to impact and crush the earth and stone again.

[0096] The fan blade 402 is driven to rotate by the output shaft of the motor 301, and the airflow enters the interior of the housing 1 through the feed port 6. During the rotation of the hammer body 303, part of the airflow passes through the through hole 3030 to dissipate the heat of the hammer body 303, and the airflow enters the interior of the cylinder 401 through the filter screen 4010 and is discharged through the cylinder 401.

[0097] At the same time, the motor 301 drives the two sets of brush rods 403 to rotate to clean the filter screens 4010 on both sides. The cleaned dust is affected by the airflow and flows through the channel extending from the bottom of the cylinder 401 to the small piece discharge port 8, and is discharged together with the small earth and stone.

[0098] In this process, when the sliding protrusion 503 moves, the arc plate 1003 is driven to move by the transmission rod 1001, and the sliding protrusion 503 is intermittently collided and pushed by the hammer 303, and the transmission rod 1001 intermittently drives the trigger rod 1002 to approach the connecting block 902, and the arc plate 1003 approaches the first elongated through hole 101 of the arc shell and the long strip block 102 in an inclined manner. Fig.10 The long strip block 102 is close to the inside of the second long through hole 10030 and cooperates with the two inclined plates 10031 to squeeze and crush the earth and stone again;

[0099] When the trigger rod 1002 approaches the connection block 902 and squeezes and pushes the connection block 902, the connection block 902 drives the screen 901 to slide downward. When the trigger rod 1002 retreats, the third spring 11 resets the connection block 902, so that the screen 901 moves up and down repeatedly.

[0100] The screen 901 has a small inclination angle. The reason for the inclination is that when the screen 901 moves up and down, the large earth and stone jumping on the upper surface of the screen 901 can follow this slope and be discharged to the large piece discharge port 7, and the smaller earth and stone can be discharged to the small piece discharge port 8 through the screen 901, thereby screening the large and small earth and stone.

[0101] In the process of screening large and small earth and rocks through the screen 901, there may be small earth and rocks with the same diameter as the hole size of the screen 901, causing blockage of the screen 901. In the process of the up and down movement of the screen 901, the screen 901 touches the steel ball 904. The second spring 903 gives the steel ball 904 a certain elasticity. The steel ball 904 collides with the surface of the screen 901, causing the surface of the screen 901 to shake, and the small earth and rocks that cause the blockage will be shaken off, thereby solving the problem of the small earth and rocks blocking the screen 901.

[0102] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A crushing device for earthwork construction, comprising a housing (1) and a crushing drive assembly (3), wherein the crushing drive assembly (3) is installed inside the housing (1) and extends to the outside, the top of the housing (1) is provided with a feed inlet (6), the bottom of the housing (1) is provided with a large-piece discharge port (7) and a small-piece discharge port (8), and the bottom of the housing (1) is provided with a base frame (2) for support, characterized in that: A collision assembly (5) is mounted on the top outer wall of the shell (1) and extends into the interior of the shell (1). When the crushing drive assembly (3) is in operation, the collision assembly (5) collides with the crushing drive assembly (3). An air flow component (4) is installed on the outer wall of the housing (1), and the crushing drive component (3) drives the air flow component (4). When the crushing drive component (3) is in operation, the air flow component (4) dissipates heat from the crushing drive component (3); An arc-shaped shell is provided inside the shell (1), and the arc-shaped shell is provided with a plurality of first elongated through holes (101). A rolling assembly (10) is installed inside the shell (1) and extends to the outside of the shell (1), and the collision assembly (5) drives the rolling assembly (10) intermittently; A screening assembly (9) is installed inside the housing (1) and extends to the outside of the housing (1); a slide groove is provided on the outside of the housing (1); a third spring (11) for resetting the screening assembly (9) is installed inside the slide groove; The screening component (9) comprises an anti-blocking shaking structure. The screening component (9) is located below the rolling component (10). The screening component (9) is located between the internal ports of the large-piece discharge port (7) and the small-piece discharge port (8).

2. A crushing device for earthwork construction according to claim 1, characterized in that: The feed port (6) is at the top of the shell (1) and is arranged to be inclined toward the inside of the shell (1). The crushing drive assembly (3) comprises a motor (301). The motor (301) is mounted on the outer wall of the shell (1). The output shaft of the motor (301) passes through the inside of the shell (1). A column (302) is mounted on the output shaft of the motor (301). A plurality of hammers (303) are mounted on the outer wall of the column (302). The hammers (303) are close to the inner wall of the shell (1). A through hole (3030) is opened on the outer wall of the hammers (303).

3. A crushing device for earthwork construction according to claim 1, characterized in that: The collision assembly (5) comprises a sliding cavity (501), wherein the sliding cavity (501) is mounted on the top outer wall of the housing (1), wherein two first springs (502) are mounted inside the sliding cavity (501), and a sliding protrusion (503) is slidably connected to the inner wall of the sliding cavity (501) and extends toward the interior of the housing (1), and a slope is arranged on the top of the sliding protrusion (503).

4. A crushing device for earthwork construction according to claim 2, characterized in that: The air flow component (4) comprises a cylinder (401), wherein the cylinder (401) is mounted on the outer wall of the shell (1) and is in communication with the shell (1), and two filter screens (4010) are mounted inside the cylinder (401), wherein one of the filter screens (4010) is located at a port between the cylinder (401) and the shell (1), and the other of the filter screens (4010) is located at an outer port of the cylinder (401).

5. A crushing device for earthwork construction according to claim 4, characterized in that: The output shaft of the motor (301) extends into the interior of the cylinder (401); eight brush rods (403) are installed on the outer wall of the motor (301), four of which form a group; two groups of brush rods (403) are respectively close to the filter screens (4010) on both sides of the cylinder (401); and fan blades (402) are installed on the outer wall of the motor (301); The bottom of the cylinder (401) is connected to the small piece discharge port (8).

6. A crushing device for earthwork construction according to claim 3, characterized in that: The rolling assembly (10) comprises a transmission rod (1001), wherein two transmission rods (1001) are respectively connected to a sliding protrusion (503) via a sliding cavity (501), and the two transmission rods (1001) are slidably connected to the sliding cavity (501); The transmission rod (1001) passes through the housing (1) and extends into the interior of the housing (1) and is slidably connected. The bottom ends of the two transmission rods (1001) are respectively connected to trigger rods (1002), and an arc plate (1003) is installed between the two transmission rods (1001).

7. A crushing device for earthwork construction according to claim 6, characterized in that: The arc-shaped shell is located outside the hammer body (303), the arc-shaped shell is provided with a plurality of first elongated through holes (101), and a plurality of elongated blocks (102) are fixedly connected to the outer wall of the arc-shaped shell; A plurality of second elongated through holes (10030) are provided on the arc-shaped plate (1003), and two inclined plates (10031) are installed on the inner walls on both sides of the second elongated through holes (10030).

8. A crushing device for earthwork construction according to claim 6, characterized in that: The screening assembly (9) comprises a screen (901), the screen (901) being slidably connected to the bottom inner wall of the housing (1), connecting blocks (902) being connected to both sides of the screen (901), the connecting blocks (902) being slidably connected to the inner wall of the slide groove through the housing (1), the connecting blocks (902) being located above the third spring (11), and the top of the connecting block (902) being arranged as an arc-shaped inclined surface block, which cooperates with the trigger rod (1002).

9. A crushing device for earthwork construction according to claim 8, characterized in that: The screen (901) is inclined toward the port of the bulk material discharge port (7).

10. A crushing device for earthwork construction according to claim 8, characterized in that: The anti-blocking shaking structure is provided in two groups, and the two groups of the anti-blocking shaking structure respectively include a second spring (903) and three steel balls (904), the three steel balls (904) are connected via the second spring (903), and the second spring (903) is connected to the inner wall of the housing (1); One group of the anti-blocking shaking structures is located on the upper surface of one end of the screen (901), and the other group of the anti-blocking shaking structures is located on the lower surface of one end of the screen (901).

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