Stone crushing device with screening mechanism

CN119488967APending Publication Date: 2025-02-21朱述星
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Patent Information

Application Number
CN202411556422.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-04
Publication Date
2025-02-21

AI Technical Summary

Technical Problem

The existing stone crushing device with screening mechanism causes too much dust when crushing coal mines, has low dust removal efficiency, and is prone to blockage of screens, and the equipment is not convenient for rapid disassembly and assembly and maintenance, which affects the environment and work efficiency.

Method used

By installing a mobile rack on the vacuum cleaner, the vacuum cleaner can rotate at the angle to improve dust removal efficiency; install a cleaning brush to remove dust on the screen surface to prevent clogging; use the insert rod to make the mounting frame easy to disassemble and maintain quickly .

Benefits of technology

It effectively improves dust removal efficiency, reduces the impact of dust on the environment, prevents screen clogging, improves the installation and maintenance efficiency of equipment, and improves the overall work efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides a stone crushing device with a screening mechanism, and relates to the technical field of coal mine mining engineering. A group of feeding ports are formed in the top of the bin body, the movable frame is in transmission connection with the outer end of the dust collection bin, a telescopic air pipe is connected outside the dust collection bin, a dust collection box is installed outside the telescopic air pipe, and an air suction pump is installed on the dust collection box; the movable frame drives the dust collection bin to perform angle reciprocating rotation, so that the dust removal efficiency of the device is improved; dust on the surface of the screen can be brushed away through a cleaning brush on the mounting frame, the mounting frame is convenient to quickly disassemble, assemble and maintain through an inserting rod, and the mounting and maintaining efficiency of the equipment is improved; the problems that when the device crushes a coal mine, the environment is easily influenced by too much raised dust, the dust collection and removal efficiency of a single position needs to be improved, the dust removal effect of the device is easily influenced by blockage of a dust collection screen, the device is inconvenient to disassemble, assemble and maintain quickly, and the installation and maintenance efficiency of the device needs to be improved are solved.
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Description

Technical Field

[0001] The invention relates to the technical field of coal mining engineering, in particular to a stone crushing device with a screening mechanism. Background Art

[0002] Coal mining is the extraction of coal resources from the earth's crust and surface. It is an important raw material industry, and rock crushing devices are often used in mining projects.

[0003] As for the existing stone crushing device with a screening mechanism, the device generates too much dust when crushing coal mines, which can easily affect the environment. The dust suction and dust removal efficiency at a single location needs to be improved, and the clogging of the dust suction screen can easily affect the dust removal effect of the device. In addition, the device is not easy to disassemble and maintain quickly, and the installation and maintenance efficiency of the equipment needs to be improved. Summary of the invention

[0004] The disclosed embodiment relates to a stone crushing device with a screening mechanism, wherein the dust suction bin reciprocates at an angle to improve the dust removal efficiency of the device, the dust on the surface of the screen can be brushed off by a cleaning brush on the mounting frame, and the mounting frame is easy to quickly disassemble and maintain by means of an insertion rod, thereby improving the installation and maintenance efficiency of the equipment.

[0005] In a first aspect of the present disclosure, there is provided a stone crushing device with a screening mechanism, specifically comprising: a bin body;

[0006] A group of feed ports are provided on the top of the bin body, two groups of conveying rollers are rotatably installed on the bottom of the bin body, and a discharging belt is installed on the two groups of conveying rollers for transmission. A motor is fixedly installed on the rear end of the bin body, and a group of first crushing teeth, second crushing teeth and third crushing teeth are rotatably installed on the top of the bin body, the rear end of the second crushing teeth is fixedly installed on the transmission shaft of the motor, and the second crushing teeth are placed between the first crushing teeth and the third crushing teeth. A sieve plate is also installed inside the bin body, and the sieve plate is an inclined structure with high left and low right. A group of dust collecting bins are rotatably installed at both ends of the top of the bin body. A screen is fixedly installed on the outer end of the dust collection bin, a group of plug rods are slidably installed on the front end of the bin body, a group of mounting frames are clamped and installed on the front end of the bin body, a group of cleaning brushes are fixed on the two ends of the inner sides of the mounting frames, and the inner ends of the cleaning brushes are respectively in contact with the outer ends of the screen, a group of limiting holes are opened on the mounting frames, and the plug rods are plugged and installed on the limiting holes of the mounting frames, a group of moving frames are slidably installed on the rear end of the bin body, and the moving frames are respectively connected to the outer ends of the dust collection bin, a telescopic air pipe is connected to the outside of the dust collection bin, a dust collecting box is installed outside the telescopic air pipe, and an air suction pump is installed on the dust collecting box.

[0007] In at least some embodiments, a set of synchronous wheels is fixedly mounted on the rear end of the third crushing tooth, a set of synchronous wheels is fixedly mounted on the rear end of the conveying roller, and the third crushing tooth and the conveying roller are connected together through a synchronous belt drive.

[0008] In at least some embodiments, two sets of racks are fixedly installed on the top of the movable frame, a set of connecting gears is fixedly installed on the rotating rod at the rear end of the dust collection bin, and the two sets of racks on the top of the movable frame are respectively meshed and transmission connected with the connecting gears at the rear end of the dust collection bin.

[0009] In at least some embodiments, a group of elastic members are sleeved and mounted on the connecting rod of the insertion rod, and the top ends of the elastic members are in contact with the bottom surface of the connecting plate on the warehouse body.

[0010] In at least some embodiments, a group of guide rods are fixedly installed at the rear end of the warehouse body, and a group of fixed ear plates are fixedly installed at the side end of the movable frame. Sliding holes are opened on the fixed ear plates, and the sliding holes on the fixed ear plates at the side ends of the movable frame are slidably installed on the guide rods at the rear end of the warehouse body.

[0011] In at least some embodiments, a group of connecting plates are fixedly installed at the front end of the warehouse body, a group of sliding holes are opened on the connecting plates, a connecting rod is fixedly installed on the top of the insertion rod, and the connecting rod at the top of the insertion rod is slidably installed on the sliding holes of the connecting plates at the front end of the warehouse body.

[0012] In at least some embodiments, a group of driving disks are fixedly installed at the rear end of the first crushing tooth, a connecting shaft is fixed to the outer end of the driving disk, a driving groove is opened at the side end of the movable frame, and the connecting shaft at the outer end of the driving disk is slidably installed on the driving groove at the side end of the movable frame.

[0013] In at least some embodiments, two sets of guide grooves are opened at the front end of the warehouse body, two sets of guide blocks are fixedly installed at the inner end of the mounting frame, and the two sets of guide blocks at the inner end of the mounting frame are plugged into the guide grooves at the front end of the warehouse body.

[0014] In at least some embodiments, two sets of rotating holes are respectively opened at both ends of the interior of the bin body, a set of rotating rods are respectively fixedly installed at both ends of the dust collection bin, and the rotating rods at both ends of the dust collection bin are rotatably installed on the rotating holes inside the bin body.

[0015] In at least some embodiments, a first gear is fixedly mounted on the front end of the first crushing tooth, a second gear is fixedly mounted on the front end of the second crushing tooth, and a third gear is fixedly mounted on the front end of the third crushing tooth. The first gear at the front end of the first crushing tooth is meshed and transmission-connected with the second gear at the front end of the second crushing tooth, and the second gear at the front end of the second crushing tooth is meshed and transmission-connected with the third gear at the front end of the third crushing tooth.

[0016] The present invention provides a stone crushing device with a screening mechanism, which has the following beneficial effects:

[0017] In the present invention, the dust collection bin is driven by the movable frame to perform reciprocating rotation at an angle, so as to improve the dust removal efficiency of the device and avoid the problem of excessive dust affecting the environment when the device is crushing the coal mine; the dust on the surface of the screen can be brushed off by the cleaning brush on the mounting frame to avoid the clogging of the screen and the influence of the dust removal effect of the device; the mounting frame is convenient for quick disassembly and maintenance by the insertion rod, thereby improving the installation and maintenance efficiency of the equipment; and while the device is crushing the coal mine, it drives the discharging belt to operate, automatically transports the coal after being screened by the screen plate to the outside, and the unqualified coal slides to the right end of the screen plate, thereby improving the working efficiency of the device.

[0018] In addition, the first gear at the front end of the first crushing tooth is meshed with the second gear at the front end of the second crushing tooth, the second gear at the front end of the second crushing tooth is meshed with the third gear at the front end of the third crushing tooth, and the third crushing tooth and the conveying roller are connected together through a synchronous belt drive, so that the device can drive the discharging belt to operate while crushing the coal, and automatically convey the coal screened by the screen plate to the outside, and the unqualified coal will slide to the right end of the screen plate, so as to improve the working efficiency of the device.

[0019] In addition, the movable frame is slidably installed on the guide rod at the rear end of the bin body through the sliding hole on the fixed ear plate at the side end of the movable frame, and the connecting shaft at the outer end of the driving disk is slidably installed on the driving groove at the side end of the movable frame. The motor drives the second crushing tooth to rotate, and the two sets of racks on the top of the movable frame are respectively meshed and connected with the connecting gears at the rear end of the dust collection bin to drive the movable frame to reciprocate up and down, thereby driving the dust collection bin to reciprocate at an angle at the same time, so as to improve the dust removal efficiency of the device and avoid the problem of excessive dust affecting the environment when the device is crushing coal mines.

[0020] In addition, the connecting rod at the top of the plug rod is slidably installed on the sliding hole of the connecting plate at the front end of the bin body, and the plug rod is pulled upward to plug and install the two sets of guide blocks at the inner end of the mounting frame on the guide groove at the front end of the bin body. When the mounting frame moves to the installation position, the plug rod is released, and under the action of the elastic part on the connecting rod, the plug rod moves downward, and the plug rod is plugged and installed on the limiting hole of the mounting frame to limit and fix the mounting frame. The cleaning brush on the mounting frame can brush off the dust on the surface of the screen to avoid clogging of the screen and affecting the dust removal effect of the device, so that the mounting frame of the device is easy to quickly disassemble and maintain, thereby improving the installation and maintenance efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0022] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0023] In the attached picture:

[0024] Figure 1 It is a front axial schematic diagram of a stone crushing device with a screening mechanism of the present invention.

[0025] Figure 2 It is a schematic diagram of a rear axial view of a stone crushing device with a screening mechanism of the present invention.

[0026] Figure 3 It is an internal schematic diagram of a stone crushing device with a screening mechanism of the present invention.

[0027] Figure 4 The present invention is a schematic diagram of disassembling and assembling a mounting frame of a stone crushing device with a screening mechanism.

[0028] Figure 5 The utility model is a schematic diagram of the installation of the dust collecting bin of the stone crushing device with the screening mechanism of the present invention.

[0029] Figure 6 The invention discloses a schematic diagram of the installation of a mobile frame of a stone crushing device with a screening mechanism.

[0030] Figure 7 The invention discloses a schematic diagram of an installation frame of a stone crushing device with a screening mechanism.

[0031] Reference numerals list

[0032] 1. Bin; 101. Feeding port; 102. Discharging belt; 1021. Conveying roller; 1022. Synchronous belt; 103. Motor; 104. First crushing tooth; 1041. Driving plate; 1042. Connecting shaft; 1043. First gear; 105. Second crushing tooth; 1051. Second gear; 106. Third crushing tooth; 1061. Third gear; 107. Screen plate; 108. Guide groove ; 109, guide rod; 1010, connecting plate; 2, mounting frame; 201, guide block; 2011, cleaning brush; 202, limiting hole; 3, moving frame; 301, rack; 302, fixed ear plate; 303, driving groove; 4, dust suction bin; 401, screen; 402, telescopic air pipe; 403, rotating rod; 4031, connecting gear; 5, plug rod; 501, connecting rod; 5011, elastic part. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment 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.

[0034] Example 1: Please refer to Figures 1 to 7 As shown:

[0035] The present invention provides a stone crushing device with a screening mechanism, comprising a bin body 1;

[0036] A group of feed ports 101 are provided at the top of the silo 1, two groups of conveying rollers 1021 are rotatably installed at the bottom of the silo 1, and a discharging belt 102 is installed on the two groups of conveying rollers 1021, and a motor 103 is fixedly installed at the rear end of the silo 1, and a group of first crushing teeth 104, second crushing teeth 105 and third crushing teeth 106 are rotatably installed at the top of the silo 1, and the rear end of the second crushing teeth 105 is fixedly installed on the transmission shaft of the motor 103, and the second crushing teeth 105 are placed between the first crushing teeth 104 and the third crushing teeth 106. A sieve plate 107 is also installed inside the silo 1, and the sieve plate 107 is an inclined structure with high left and low right. A group of dust collection bins 4 is provided, a screen 401 is fixedly installed on the outer end of the dust collection bin 4, a group of insertion rods 5 are slidably installed on the front end of the bin body 1, a group of mounting frames 2 are clamped and installed on the front end of the bin body 1, a group of cleaning brushes 2011 are respectively fixed on the inner ends of the mounting frames 2, and the inner ends of the cleaning brushes 2011 are respectively in contact with the outer ends of the screen 401, a group of limiting holes 202 are opened on the mounting frame 2, and the insertion rods 5 are plugged and installed on the limiting holes 202 of the mounting frame 2, a group of moving frames 3 are slidably installed on the rear end of the bin body 1, and the moving frames 3 are respectively connected to the outer ends of the dust collection bin 4, a telescopic air pipe 402 is connected to the outside of the dust collection bin 4, a dust collecting box is installed outside the telescopic air pipe 402, and an air suction pump is installed on the dust collecting box.

[0037] In the embodiment of the present disclosure, a first gear 1043 is fixedly installed at the front end of the first crushing tooth 104, a second gear 1051 is fixedly installed at the front end of the second crushing tooth 105, and a third gear 1061 is fixedly installed at the front end of the third crushing tooth 106. The first gear 1043 at the front end of the first crushing tooth 104 is meshed and driven with the second gear 1051 at the front end of the second crushing tooth 105, and the second gear 1051 at the front end of the second crushing tooth 105 is meshed and driven with the third gear 1061 at the front end of the third crushing tooth 106. A group of synchronous wheels is fixedly installed at the rear end of the third crushing tooth 106, and a group of synchronous wheels is fixedly installed at the rear end of the conveying roller 1021, and the third crushing tooth 106 and the conveying roller 1021 are fixedly installed. The rollers 1021 are connected together through the synchronous belt 1022; specifically, the first gear 1043 at the front end of the first crushing tooth 104 is meshed and connected with the second gear 1051 at the front end of the second crushing tooth 105, the second gear 1051 at the front end of the second crushing tooth 105 is meshed and connected with the third gear 1061 at the front end of the third crushing tooth 106, the third crushing tooth 106 and the conveying roller 1021 are connected together through the synchronous belt 1022, so that the device can drive the discharging belt 102 to operate while crushing the coal, and automatically convey the coal screened by the screen plate 107 to the outside, and the unqualified coal slides to the right end of the screen plate 107, so as to improve the working efficiency of the device.

[0038] Among them, Figure 5 and Figure 6As shown, a group of guide rods 109 are fixedly installed on the rear end of the warehouse body 1, and a group of fixed ear plates 302 are fixedly installed on the side ends of the moving frame 3, and sliding holes are opened on the fixed ear plates 302, and the sliding holes on the fixed ear plates 302 on the side ends of the moving frame 3 are slidably installed on the guide rods 109 at the rear end of the warehouse body 1; a group of driving disks 1041 are fixedly installed on the rear end of the first crushing tooth 104, and a connecting shaft 1042 is fixed on the outer end of the driving disk 1041, and a driving groove 303 is opened on the side end of the moving frame 3, and the connecting shaft 1042 at the outer end of the driving disk 1041 is slidably installed on the driving groove 303 at the side end of the moving frame 3, two groups of rotating holes are respectively opened at the two ends of the interior of the warehouse body 1, and a group of rotating rods 403 are respectively fixedly installed at the two ends of the dust collection bin 4, and the rotating rods 403 at the two ends of the dust collection bin 4 are respectively rotatably installed on the rotating holes inside the warehouse body 1, and two groups of The rack 301 and the rotating rod 403 at the rear end of the dust collection bin 4 are fixedly mounted with a group of connecting gears 4031, and the two groups of racks 301 at the top of the moving frame 3 are respectively meshed and connected with the connecting gears 4031 at the rear end of the dust collection bin 4; specifically, the sliding hole on the fixed ear plate 302 at the side end of the moving frame 3 is slidably mounted on the guide rod 109 at the rear end of the bin body 1, and the connecting shaft 1042 at the outer end of the driving disk 1041 is slidably mounted on the driving groove 303 at the side end of the moving frame 3, and the motor 103 drives the second crushing tooth 105 to rotate, and the two groups of racks 301 at the top of the moving frame 3 are respectively meshed and connected with the connecting gears 4031 at the rear end of the dust collection bin 4 to drive the moving frame 3 to reciprocate up and down, thereby driving the dust collection bin 4 to reciprocate at an angle at the same time, so as to improve the dust removal efficiency of the device and avoid the problem of excessive dust affecting the environment when the device is crushing coal mines.

[0039] Embodiment 2: Based on Embodiment 1, Figure 4 and Figure 7As shown, a group of connecting plates 1010 are fixedly installed at the front end of the warehouse body 1, and a group of sliding holes are opened on the connecting plate 1010, a connecting rod 501 is fixedly installed on the top of the plug rod 5, and the connecting rod 501 at the top of the plug rod 5 is slidably installed on the sliding hole of the connecting plate 1010 at the front end of the warehouse body 1, a group of elastic members 5011 are sleeved and installed on the connecting rod 501 of the plug rod 5, and the top of the elastic member 5011 contacts the bottom surface of the connecting plate 1010 on the warehouse body 1, two groups of guide grooves 108 are opened at the front end of the warehouse body 1, and two groups of guide blocks 201 are fixedly installed on the inner end of the mounting frame 2, and the two groups of guide blocks 201 at the inner end of the mounting frame 2 are plugged and installed on the guide grooves 108 at the front end of the warehouse body 1; the specific function is that the connecting rod 5 at the top of the plug rod 5 The connecting rod 501 is slidably installed on the sliding hole of the connecting plate 1010 at the front end of the bin body 1, and the insertion rod 5 is pulled upward to insert and install the two sets of guide blocks 201 at the inner end of the mounting frame 2 on the guide groove 108 at the front end of the bin body 1. When the mounting frame 2 moves to the installation position, the insertion rod 5 is released, and under the action of the elastic member 5011 on the connecting rod 501, the insertion rod 5 moves downward, and the insertion rod 5 is inserted and installed on the limiting hole 202 of the mounting frame 2 to limit and fix the mounting frame 2. The cleaning brush 2011 on the mounting frame 2 can brush away the dust on the surface of the screen 401 to avoid clogging of the screen 401 and affecting the dust removal effect of the device, thereby making the mounting frame 2 of the device easy to quickly disassemble and maintain, thereby improving the installation and maintenance efficiency of the equipment.

[0040] Specific usage and function of this embodiment: In the present invention, the third crushing tooth 106 and the conveying roller 1021 are connected together through the synchronous belt 1022, so that the device can drive the discharging belt 102 to operate while crushing the coal mine, and automatically convey the coal material screened by the screen plate 107 to the outside, and the unqualified coal material slides to the right end of the screen plate 107 to improve the working efficiency of the device; the motor 103 drives the second crushing tooth 105 to rotate, so as to drive the moving frame 3 to reciprocate up and down, thereby driving the dust collection bin 4 to reciprocate at the same time to improve the working efficiency of the device. To improve the dust removal efficiency of the device, pull the insertion rod 5 upwards, and insert the two sets of guide blocks 201 at the inner end of the mounting frame 2 into the guide groove 108 at the front end of the bin body 1. When the mounting frame 2 moves to the installation position, release the insertion rod 5. Under the action of the elastic member 5011 on the connecting rod 501, the insertion rod 5 moves downward, and the insertion rod 5 is inserted and installed in the limiting hole 202 of the mounting frame 2 to limit and fix the mounting frame 2. The cleaning brush 2011 on the mounting frame 2 can brush off the dust on the surface of the screen 401. The mounting frame 2 is easy to quickly disassemble and maintain, thereby improving the installation and maintenance efficiency of the equipment.

Claims

1. A stone crushing device with a screening mechanism, characterized in that: It comprises a bin body (1); The top of the silo (1) is provided with a group of feed ports (101), the bottom of the silo (1) is rotatably mounted with two groups of conveying rollers (1021), the two groups of conveying rollers (1021) are transmission-mounted with a discharging belt (102), the rear end of the silo (1) is fixedly mounted with a motor (103), the top of the silo (1) is rotatably mounted with a group of first crushing teeth (104), second crushing teeth (105) and third crushing teeth (106), the rear end of the second crushing teeth (105) is fixedly mounted on the transmission shaft of the motor (103), and the second crushing teeth (105) are disposed between the first crushing teeth (104) and the third crushing teeth (106), the silo (1) is further mounted with a sieve plate (107), the sieve plate (107) being in a left-high and right-low inclined structure, and the top two ends of the silo (1) are rotatably mounted with a plurality of first crushing teeth (104), second crushing teeth (105) and third crushing teeth (106). A dust collecting bin (4) is provided, a screen (401) is fixedly installed on the outer end of the dust collecting bin (4), a group of insertion rods (5) are slidably installed on the front end of the bin body (1), a group of mounting frames (2) are clamped and installed on the front end of the bin body (1), a group of cleaning brushes (2011) are respectively fixed on the inner ends of the mounting frames (2), and the inner ends of the cleaning brushes (2011) are respectively in contact with the outer ends of the screen (401), a group of limiting holes (202) are opened on the mounting frames (2), and the insertion rods (5) are plugged and installed on the limiting holes (202) of the mounting frames (2), a group of moving frames (3) are slidably installed on the rear end of the bin body (1), and the moving frames (3) are respectively connected to the outer ends of the dust collecting bin (4), a telescopic air pipe (402) is connected to the outside of the dust collecting bin (4), a dust collecting box is installed outside the telescopic air pipe (402), and an air suction pump is installed on the dust collecting box.

2. A stone crushing device with a screening mechanism according to claim 1, characterized in that: A first gear (1043) is fixedly mounted on the front end of the first crushing tooth (104), a second gear (1051) is fixedly mounted on the front end of the second crushing tooth (105), and a third gear (1061) is fixedly mounted on the front end of the third crushing tooth (106). The first gear (1043) at the front end of the first crushing tooth (104) is meshed and transmission-connected with the second gear (1051) at the front end of the second crushing tooth (105), and the second gear (1051) at the front end of the second crushing tooth (105) is meshed and transmission-connected with the third gear (1061) at the front end of the third crushing tooth (106).

3. A stone crushing device with a screening mechanism according to claim 1, characterized in that: A set of synchronous wheels is fixedly mounted on the rear end of the third crushing tooth (106), a set of synchronous wheels is fixedly mounted on the rear end of the conveying roller (1021), and the third crushing tooth (106) and the conveying roller (1021) are connected together by a synchronous belt (1022).

4. A stone crushing device with a screening mechanism according to claim 1, characterized in that: A group of guide rods (109) are fixedly installed at the rear end of the warehouse body (1), and a group of fixed ear plates (302) are fixedly installed at the side end of the movable frame (3). Sliding holes are opened on the fixed ear plates (302), and the sliding holes on the fixed ear plates (302) at the side ends of the movable frame (3) are slidably installed on the guide rods (109) at the rear end of the warehouse body (1).

5. The stone crushing device with screening mechanism according to claim 1, characterized in that: A group of driving discs (1041) are fixedly mounted at the rear end of the first crushing teeth (104); a connecting shaft (1042) is fixedly mounted at the outer end of the driving disc (1041); a driving groove (303) is provided at the side end of the mobile frame (3); and the connecting shaft (1042) at the outer end of the driving disc (1041) is slidably mounted on the driving groove (303) at the side end of the mobile frame (3).

6. A stone crushing device with a screening mechanism according to claim 1, characterized in that: Two groups of rotating holes are respectively provided at the two ends of the interior of the bin body (1); a group of rotating rods (403) are respectively fixedly installed at the two ends of the dust collection bin (4); and the rotating rods (403) at the two ends of the dust collection bin (4) are respectively rotatably installed on the rotating holes inside the bin body (1).

7. The stone crushing device with a screening mechanism according to claim 1, characterized in that: Two sets of racks (301) are fixedly mounted on the top of the movable frame (3), a set of connecting gears (4031) is fixedly mounted on the rotating rod (403) at the rear end of the dust collection bin (4), and the two sets of racks (301) at the top of the movable frame (3) are respectively meshed and transmission-connected with the connecting gears (4031) at the rear end of the dust collection bin (4).

8. The stone crushing device with screening mechanism according to claim 1, characterized in that: A group of connecting plates (1010) are fixedly installed at the front end of the warehouse body (1), and a group of sliding holes are opened on the connecting plates (1010). A connecting rod (501) is fixedly installed on the top of the insertion rod (5), and the connecting rod (501) at the top of the insertion rod (5) is slidably installed on the sliding holes of the connecting plates (1010) at the front end of the warehouse body (1).

9. The stone crushing device with screening mechanism according to claim 1, characterized in that: A group of elastic members (5011) is sleeved and installed on the connecting rod (501) of the insertion rod (5), and the top end of the elastic member (5011) is in contact with the bottom surface of the connecting plate (1010) on the warehouse body (1).

10. The stone crushing device with screening mechanism according to claim 1, characterized in that: The front end of the bin body (1) is provided with two groups of guide grooves (108), the inner end of the mounting frame (2) is fixedly provided with two groups of guide blocks (201), and the two groups of guide blocks (201) at the inner end of the mounting frame (2) are plugged and installed on the guide grooves (108) at the front end of the bin body (1).