A mining stone crushing and screening device

Abstract

The present invention relates to the technical field of mining stone processing, and discloses a mining stone crushing and screening device, comprising a crushing equipment body, a screening box is arranged on one side of the crushing equipment body, a rotating frame is rotatably mounted on the screening box through a bearing seat, a screen is fixed on the rotating frame, and screening buckets are installed on both sides of the rotating frame, a plurality of screening troughs are arranged on the screening bucket, and a conveyor belt for conveying stones is arranged between the discharge port of the crushing equipment body and the screening box; a connecting rod is arranged on the screening bucket, a first strip frame is installed on one end of the connecting rod, and a first scraper bracket is arranged under the first strip frame and a second scraper bracket is arranged under the second strip frame, so that the crushed stones falling into the screening trough can be scraped during the movement, so that the accumulated stones can be spread out conveniently and the stones can be quickly screened through the screen.

Description

Technical Field

[0001] The invention relates to the technical field of mine stone processing, in particular to a mine stone crushing and screening device. Background Art

[0002] The crushing and screening of mine stones can effectively crush large stones into aggregates of different specifications. These aggregates can be used in the construction of infrastructure such as buildings and roads, which improves the utilization rate of resources and also brings higher economic benefits to mining companies. The process of mine stone crushing and screening mainly includes the steps of ore crushing, screening and grinding. Crushing of ore: The ore mined from the mine is large in size and needs to be crushed to adapt to subsequent sorting operations. Various crushers are used in the crushing process, such as jaw crushers, cone crushers, roll crushers, etc. The appropriate crusher is selected according to the properties of the ore, the production capacity of the beneficiation plant and the particle size requirements of the crushed product. Screening of ore: Screening is the process of separating the crushed ore into different particle sizes through a sieve.

[0003] A large amount of water is added during the crushing process of mine stones. Adding water not only helps to protect the stones from thermal damage, but also improves the quality of the stones and the crushing efficiency. However, the presence of water causes the crushed stone debris and the generated dust to mix with water, which can easily cause the mesh of the screen to be clogged during the screening process, affecting the screening effect. Manual cleaning takes a long time and is inefficient, thus affecting the screening efficiency of the stones. Summary of the invention

[0004] The present invention provides a mining stone crushing and screening device, which can achieve the purpose of scraping the crushed stones falling into the screening trough, facilitate the spreading of the piled stones, and promote the rapid screening of the stones through the screen. It solves the problem mentioned in the above background technology that the mesh of the screen is easily clogged during the screening process, affecting the screening effect, and manual cleaning takes a long time and is inefficient, thereby affecting the screening efficiency of the stones.

[0005] The present invention provides the following technical solution: a mining stone crushing and screening device, comprising a crushing equipment body, a screening box is arranged on one side of the crushing equipment body, a rotating frame is rotatably mounted on the screening box through a bearing seat, a screen is fixed on the rotating frame, and screening buckets are installed on both sides of the rotating frame, a plurality of screening slots are arranged on the screening bucket, and a conveyor belt for conveying stone is arranged between the discharge port of the crushing equipment body and the screening box;

[0006] The screening bucket is provided with a connecting rod, one end of which is equipped with a first bar frame, and the other end of which is connected to a second bar frame, the connecting rod is elastically connected to the second bar frame through a first spring, and the connecting rod is elastically connected to the screening bucket through a seventh spring, a first scraper bracket and a first brush plate are respectively provided below the first bar frame, a second scraper bracket and a second brush plate are respectively provided below the second bar frame, and a first resistance block is fixed to one side of the first bar frame.

[0007] As an optional solution of the mine stone crushing and screening device described in the present invention, wherein: a mounting bracket is fixed on the screening box, a first V-shaped resistance block is arranged on one side of the screening bucket, the first V-shaped resistance block is fixed on one end of the mounting bracket, and the first resistance block is in resistance with the first V-shaped resistance block.

[0008] As an optional solution of the mine stone crushing and screening device described in the present invention, a motor assembly for driving the rotating frame to rotate is fixed on the screening box, and the motor assembly includes a mounting seat, which is fixed on the screening box, and a servo motor is fixed on the mounting seat, and the motor shaft of the servo motor is transmission-connected to one end of the rotating frame through a coupling.

[0009] As an optional solution of the mine stone crushing and screening device described in the present invention, a discharge port is provided on one side of the screening box, the discharge port is located on one side of the screen, and a plurality of arc-shaped guide bars are fixed on the screen.

[0010] As an optional scheme of the mining stone crushing and screening device described in the present invention, there are two first sliding brackets slidingly connected in the first bar frame, the lower end of the first sliding bracket is fixedly connected to the first brush plate, a second spring is fixed to the first sliding bracket, the lower end of the second spring is pressed against the first bar frame, a first interference bracket is fixed to the first sliding bracket, a first interference rod is provided on one side of the first bar frame, the first interference rod is elastically connected to the first bar frame through a third spring, one end of the first interference rod is in conflict with the first interference bracket, and a second V-shaped interference block is fixed to the screening box.

[0011] As an optional solution of the mining stone crushing and screening device described in the present invention, there are two second sliding brackets slidingly connected in the second bar frame, the lower end of the second sliding bracket is fixedly connected to the second brush plate, a fourth spring is fixed on the second sliding bracket, the lower end of the fourth spring is tightly pressed in the second bar frame, a second interference bracket is fixed on the second sliding bracket, and one end of the connecting rod is in conflict with the second interference bracket.

[0012] As an optional solution of the mining stone crushing and screening device described in the present invention, wherein: a limit rod is slidably connected to the screening bucket, one end of the limit rod is engaged on the second bar frame, and one end of the limit rod is slidably connected to the first bar frame through a fifth spring, and a resistance wedge is fixed to one end of the limit rod, and the resistance wedge is in resistance with the first resistance bracket.

[0013] As an optional scheme of the mining stone crushing and screening device described in the present invention, wherein: a second resistance rod is fixed to one end of the first scraper bracket, and the second resistance rod is elastically connected to the first bar frame through a sixth spring, a third resistance rod is fixed to one of the first sliding brackets, a first bar frame is provided with a first bar groove, and the third resistance rod is inserted into the first bar groove, and an eighth spring is fixed to the other first sliding bracket, and one end of the eighth spring is pressed against the first bar frame.

[0014] As an optional scheme of the mine stone crushing and screening device described in the present invention, wherein: a fourth resistance rod is fixed to one end of the second scraper bracket, and the fourth resistance rod is elastically connected to the second bar frame through a ninth spring, a fifth resistance rod is fixed to one of the second sliding brackets, a second bar frame is provided with a second bar groove, and the fifth resistance rod is engaged in the second bar groove, and a tenth spring is fixed to another second sliding bracket, and one end of the tenth spring is pressed against the second bar frame.

[0015] As an optional solution of the mine stone crushing and screening device described in the present invention, wherein: a plurality of arc-shaped protrusions are arranged on the screening bucket, the second resistance rod and the fourth resistance rod both resist the arc-shaped protrusions, the first bar frame and the second bar frame are both provided with protective cover plates, and the first sliding bracket and the second sliding bracket are both fixed with limiting rings.

[0016] The present invention has the following beneficial effects:

[0017] 1. In the mine stone crushing and screening device, through the cooperation of the rotating frame, the screening bucket and the screen arranged on the screening box, the several screening slots on the screening bucket can be rotated during operation, so that the stones crushed by the crushing equipment body can be quickly screened. One end of the connecting rod arranged on the screening bucket is conveniently fixedly connected with the first strip frame, and the other end can be elastically connected with the second strip frame. Through the first scraper bracket arranged below the first strip frame and the second scraper bracket arranged below the second strip frame, the crushed stones falling into the screening slot can be scraped during the movement, so that the accumulated stones can be spread out, and the crushing can be promoted. The stones can be quickly screened through the screen. After the screened stones are discharged, the blockages in the mesh of the screen can be cleaned by the first brush plate and the second brush plate during movement, which facilitates the circulation of small stones, so as to improve the screening effect of the stones. When the screening bucket is rotating, the first V-shaped interference block installed on the mounting bracket can conflict with the first interference block fixed on one side of the first bar frame, so as to achieve the purpose of synchronous horizontal movement of the first bar frame, the connecting rod and the second bar frame. During the stone screening process, the first scraper bracket and the second scraper bracket can automatically move horizontally, which greatly speeds up the stone screening efficiency.

[0018] 2. The mining stone crushing and screening device can be connected to the first brush plate through the first sliding bracket arranged in the first bar frame, and the first interference bracket fixed on the first sliding bracket can interfere with the first interference rod elastically connected to the first bar frame. When the second V-shaped interference block fixed on the screening box can interfere with the first interference rod after the stone is discharged, the first interference bracket is caused to be subjected to the interference force of the first interference rod, so that the first sliding bracket drives the first brush plate to move so as to be able to interfere with the screen. When the first interference rod continues to interfere with the second V-shaped interference block, the first bar frame can be horizontally moved, and the first brush plate and the connecting rod can be synchronously moved horizontally. When the connecting rod moves, The purpose of the second sliding bracket is to interfere with the second interference bracket arranged in the second bar frame, so that the second sliding bracket drives the second brush plate to contact the screen. When the second brush plate and the first brush plate move horizontally, it is convenient to automatically clean the blockage on the screen, which can further improve the screening effect of the stone. Through the limiting rod arranged on the screening bucket, one end of the connecting rod is against the second bar frame in the initial state, and the other end is against the first interference bracket through the fixed interference wedge block, so that the connecting rod can be limited, so that when the second scraper bracket is working, one end of the connecting rod can be prevented from sliding into the second bar frame and colliding with the second interference bracket, causing the second brush plate to move when the second scraper bracket is working, affecting the scraping effect of the second scraper bracket.

[0019] 3. In the mine stone crushing and screening device, when the first bar frame and the second bar frame move in water, the second resistance rod at one end of the first scraper bracket and the fourth resistance rod at one end of the second scraper bracket can be continuously resistant to the plurality of arc-shaped protrusions, which is convenient for the first scraper bracket and the second scraper bracket to move back and forth during work, thereby improving the scraping effect. At the same time, when the first brush plate and the second brush plate clean the blockage in the screen, when the first resistance bracket and the second resistance bracket are resistant, the first brush plate and the second brush plate can be resistant to the screen. At the same time, the third resistance rod fixed on the first sliding bracket and the fifth resistance rod fixed on the second sliding bracket can be engaged in the arc-shaped protrusions. When the first brush plate and the second brush plate move horizontally, the third resistance rod and the fifth resistance rod can be continuously resistant to the plurality of arc-shaped protrusions at the same time, thereby causing the first brush plate and the second brush plate to move back and forth during work, thereby greatly improving the cleaning effect of the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is one of the three-dimensional structural schematic diagrams of the present invention.

[0021] Figure 2 This is the second schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 3 It is a schematic diagram of the screening box structure of the present invention.

[0023] Figure 4 This is one of the schematic diagrams of the first bar frame and the second bar frame structure of the present invention.

[0024] Figure 5 This is the second structural schematic diagram of the first bar frame and the second bar frame of the present invention.

[0025] Figure 6 This is the third structural schematic diagram of the first bar frame and the second bar frame of the present invention.

[0026] Figure 7 It is a cross-sectional view of the first strip frame and the second strip frame structure of the present invention.

[0027] Figure 8 It is a cross-sectional view of the limiting rod structure of the present invention.

[0028] Fig. 9 It is a schematic diagram of the screening bucket structure of the present invention.

[0029] Fig.10 for Fig. 9 A partial enlarged schematic diagram in the middle.

[0030] In the figure: 1, crushing equipment body; 2, screening box; 3, bearing seat; 4, rotating frame; 401, mounting seat; 402, servo motor; 5, screen; 6, screening bucket; 7, screening trough; 8, conveyor belt; 9, connecting rod; 10, first bar frame; 11, second bar frame; 12, first spring; 13, first scraper bracket; 14, first brush plate; 15, second scraper bracket; 16, second brush plate; 17, first resistance block; 18, mounting bracket; 19, first V-shaped resistance block; 20, discharge port; 21, arc-shaped guide strip; 22, first sliding bracket; 23, second spring; 24, The first interference bracket; 25. The first interference rod; 26. The third spring; 27. The second sliding bracket; 271. The second interference bracket; 28. The fourth spring; 29. ​​The second V-shaped interference block; 30. The limiting rod; 31. The fifth spring; 32. The interference wedge block; 33. The second interference rod; 34. The sixth spring; 35. The third interference rod; 36. The first strip groove; 37. The limiting ring; 38. The eighth spring; 39. The fourth interference rod; 40. The ninth spring; 41. The fifth interference rod; 42. The second strip groove; 43. The seventh spring; 44. The tenth spring; 45. The arc-shaped protrusion; 46. The protective cover. DETAILED DESCRIPTION

[0031] 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.

[0032] Embodiment 1

[0033] See also Figure 1-Figure 10 A mining stone crushing and screening device comprises a crushing equipment body 1, a screening box 2 is arranged on one side of the crushing equipment body 1, a rotating frame 4 is rotatably mounted on the screening box 2 through a bearing seat 3, a screen 5 is fixed on the rotating frame 4, and screening buckets 6 are installed on both sides of the rotating frame 4, and a plurality of screening slots 7 are arranged on the screening bucket 6, and a conveyor belt 8 for conveying stone is arranged between the discharge port of the crushing equipment body 1 and the screening box 2;

[0034] A connecting rod 9 is provided on the screening bucket 6, a first bar frame 10 is installed at one end of the connecting rod 9, and a second bar frame 11 is connected to the other end of the connecting rod 9, the connecting rod 9 is elastically connected to the second bar frame 11 through a first spring 12, and the connecting rod 9 is elastically connected to the screening bucket 6 through a seventh spring 43, a first scraper bracket 13 and a first brush plate 14 are respectively provided below the first bar frame 10, a second scraper bracket 15 and a second brush plate 16 are respectively provided below the second bar frame 11, and a first resistance block 17 is fixed to one side of the first bar frame 10.

[0035] A mounting bracket 18 is fixed on the screening box 2 , and a first V-shaped abutment block 19 is provided on one side of the screening bucket 6 . The first V-shaped abutment block 19 is fixed on one end of the mounting bracket 18 , and the first abutment block 17 abuts against the first V-shaped abutment block 19 .

[0036] A motor assembly for driving the rotating frame 4 to rotate is fixed on the screening box 2. The motor assembly includes a mounting seat 401, which is fixed on the screening box 2. A servo motor 402 is fixed on the mounting seat 401. The motor shaft of the servo motor 402 is transmission-connected to one end of the rotating frame 4 through a coupling.

[0037] A discharge port 20 is provided on one side of the screening box 2 . The discharge port 20 is located on one side of the screen 5 , and a plurality of arc-shaped guide bars 21 are fixed on the screen 5 .

[0038] The mine stone is put into the crushing equipment body 1 for crushing, forming stones of different sizes and volumes, which are transported to the screening trough 7 in the screening bucket 6 through the conveyor belt 8. At the same time, the servo motor 402 installed on the mounting seat 401 is connected to one end of the rotating frame 4 through a coupling. When the servo motor 402 rotates, the rotating frame 4 can drive the screening bucket 6 to rotate. When the screened stones rotate, they can be screened through the mesh holes on the screen 5. Small stones fall into the screen 5 or the bottom of the screening box 2. When they come into contact with some of the screened stones through a number of rotating arc guide strips 21, they can be discharged from the discharge port 20 set on one side of the screening box 2 along the fast arc guide strips 21, thereby reducing the amount of stones in the screen 5. When the screening bucket 6 is rotating, it can be connected with the mounting bracket 18. The purpose of the first V-shaped resistance block 19 being in resistance with the first resistance block 17 on the first bar frame 10 is to prompt the first bar frame 10 to move horizontally, and the seventh spring 43 accumulates force. At the same time, the cooperation of the first spring 12 and the connecting rod 9 can drive the second bar frame 11 to move horizontally synchronously, so that the first scraper bracket 13 and the second scraper bracket 15 can both move horizontally on the screening bucket 6. During the movement, the broken stones falling into the screening trough 7 can be scraped, so that the accumulated stones are spread out, which is convenient for the stones to be quickly screened through the screen 5. At this time, the second brush plate 16 and the first brush plate 14 remain in an ascending state and do not participate in the work. When the stone screening is completed, the rotating screening bucket 6 can tilt close to the back of the screening box 2, so that large stones can be discharged quickly.

[0039] Embodiment 2: This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figure 1-Figure 10 Two first sliding brackets 22 are slidably connected in the first bar frame 10, the lower end of the first sliding bracket 22 is fixedly connected to the first brush plate 14, a second spring 23 is fixed to the first sliding bracket 22, the lower end of the second spring 23 is pressed against the first bar frame 10, a first interference bracket 24 is fixed to the first sliding bracket 22, a first interference rod 25 is provided on one side of the first bar frame 10, the first interference rod 25 is elastically connected to the first bar frame 10 through a third spring 26, one end of the first interference rod 25 is in conflict with the first interference bracket 24, and a second V-shaped interference block 29 is fixed to the screening box 2.

[0040] Two second sliding brackets 27 are slidably connected in the second bar frame 11, and the lower ends of the second sliding brackets 27 are fixedly connected to the second brush plate 16. A fourth spring 28 is fixed on the second sliding bracket 27, and the lower end of the fourth spring 28 is pressed tightly against the second bar frame 11. A second interference bracket 271 is fixed on the second sliding bracket 27, and one end of the connecting rod 9 is in conflict with the second interference bracket 271.

[0041] A limiting rod 30 is slidably connected to the screening bucket 6, one end of which is engaged with the second strip frame 11, and one end of which is slidably connected to the first strip frame 10 via a fifth spring 31. A resisting wedge 32 is fixed to one end of the limiting rod 30, and the resisting wedge 32 resists the first resisting bracket 24.

[0042] In order to ensure that the second brush plate 16 does not move downward during the scraping process, causing wear and affecting the service life, it is necessary to limit the position of the second brush plate 16. Figure 4-Figure 7 By means of the limiting rod 30 provided on the screening bucket 6, in the initial state, one end of the limiting rod 30 abuts against the second bar frame 11, and the other end of the limiting rod abuts against the first abutting bracket 24 through the fixed abutting wedge 32, the connecting rod 9 can be limited, so that when the second scraper bracket 15 is working, one end of the connecting rod 9 can be prevented from sliding into the second bar frame 11 and abutting against the second abutting bracket 271, thereby affecting the scraping effect of the second scraper bracket 15;

[0043] After the stone is screened and discharged from one side of the screening box 2, the mixture of dust and water in the mesh of the screen 5 needs to be cleaned. Figure 3-Figure 8 During the cleaning, when the screening bucket 6 rotates, the second V-shaped resistance block 29 provided under the screening box 2 is slender compared with the first V-shaped resistance block 19, and can resist the first resistance rod 25 deep in the screening bucket 6. The third spring 26 accumulates force, causing the first resistance bracket 24 to be subjected to the resistance force of the first resistance rod 25, which can drive the first brush plate 14 to move and resist against the surface of the screen 5. At the same time, the second spring 23 accumulates force, and the resistance wedge block 32 releases the resistance with the first resistance bracket 24. The limit rod 30 moves horizontally under the elastic force of the fifth spring 31 to release the limit on the connecting rod 9. When the first resistance rod 2 5 continues to contact with the second V-shaped contact block 29, the purpose of horizontal movement of the first bar frame 10 can be achieved, and the first brush plate 14 and the connecting rod 9 can be synchronously moved. During the movement of the connecting rod 9, the purpose of contacting with the second contact bracket 271 can be achieved. At the same time, the first spring 12 accumulates force and the second bar frame 11 moves horizontally. The second contact bracket 271 is contacted, which can prompt the second sliding bracket 27 to drive the second brush plate 16 to contact the surface of the screen 5. At the same time, the fourth spring 28 accumulates force, which is convenient for the second brush plate 16 and the first brush plate 14 to move horizontally, and the blockage on the screen 5 can be automatically cleaned, which can further improve the screening effect of the stone.

[0044] Embodiment 3: This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figure 1-Figure 10A second resistance rod 33 is fixed to one end of the first scraper bracket 13, and the second resistance rod 33 is elastically connected to the first bar frame 10 through a sixth spring 34. A third resistance rod 35 is fixed to one of the first sliding brackets 22, and a first bar groove 36 is provided on the first bar frame 10. The third resistance rod 35 is inserted into the first bar groove 36. An eighth spring 38 is fixed to the other first sliding bracket 22, and one end of the eighth spring 38 is pressed against the first bar frame 10.

[0045] A fourth resistance rod 39 is fixed to one end of the second scraper bracket 15, and the fourth resistance rod 39 is elastically connected to the second bar frame 11 through a ninth spring 40. A fifth resistance rod 41 is fixed to one of the second sliding brackets 27, and a second bar groove 42 is provided on the second bar frame 11. The fifth resistance rod 41 is engaged in the second bar groove 42. A tenth spring 44 is fixed to the other second sliding bracket 27, and one end of the tenth spring 44 is pressed against the second bar frame 11.

[0046] A plurality of arc-shaped protrusions 45 are provided on the screening bucket 6, the second resistance rod 33 and the fourth resistance rod 39 both resist against the arc-shaped protrusion 45, the third resistance rod 35 and the fifth resistance rod 41 are located on one side of the arc-shaped protrusion 45, the first strip frame 10 and the second strip frame 11 are both provided with a protective cover plate 46, and the first sliding bracket 22 and the second sliding bracket 27 are both fixed with a limiting ring 37.

[0047] In order to improve the scraping efficiency of the stone and the cleaning effect of the screen 5, refer to Figure 4-Figure 8The second resistance rod 33 fixed at one end of the first scraper bracket 13 and the fourth resistance rod 39 fixed at one end of the second scraper bracket 15 can penetrate the first bar frame 10 and the second bar frame 11 and resist the arc-shaped protrusion 45 in the initial state. When the first bar frame 10 and the second bar frame 11 move, the sixth spring 34 and the ninth spring 40 continuously store and release elastic force, which can make the first scraper bracket 13 and the second scraper bracket 15 reciprocate during the working process to improve the scraping effect. When the first brush plate 14 and the second brush plate 16 clean the blockage in the screen 5, the first resistance bracket 24 and the second resistance bracket 271 are respectively affected by the first When the resistance rod 25 is in resistance with the connecting rod 9, not only the purpose of the first brush plate 14 and the second brush plate 16 being in resistance with the screen 5 is achieved, but also the third resistance rod 35 fixed on the first sliding bracket 22 and the fifth resistance rod 41 fixed on the second sliding bracket 27 are both at the same height position with the arc-shaped protrusion 45. When the first brush plate 14 and the second brush plate 16 move horizontally, the purpose of the third resistance rod 35 and the fifth resistance rod 41 being in continuous resistance with several arc-shaped protrusions 45 can be achieved. At the same time, the eighth spring 38 and the tenth spring 44 continuously store and release elastic force, so that the first brush plate 14 and the second brush plate 16 can move back and forth during work, which greatly improves the cleaning effect of the screen 5.

[0048] Since one end of the eighth spring 38 and the tenth spring 44 are not fixed, the first brush plate 14 and the second brush plate 16 can cause the eighth spring 38 and the tenth spring 44 to change their positions synchronously during movement, thereby not affecting the resetting of the first brush plate 14 and the second brush plate 16. At the same time, the limiting ring 37 fixed on the first sliding bracket 22 and the second sliding bracket 27 can limit the first brush plate 14 and the second brush plate 16, thereby keeping the first interference rod 25 and the first interference bracket 24 and the connecting rod 9 and the second interference bracket 271 in a conflicting state, avoiding the initial position of the first brush plate 14 and the second brush plate 16 from shifting, thereby affecting the subsequent working position accuracy, and the protective cover plate 46 set on the first bar frame 10 and the second bar frame 11 can prevent dust and small stones from entering the interior and affecting use.

[0049] 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.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A mining stone crushing and screening device, comprising a crushing equipment body, characterized in that: A screening box is provided on one side of the crushing equipment body, a rotating frame is rotatably mounted on the screening box through a bearing seat, a screen is fixed on the rotating frame, and screening buckets are installed on both sides of the rotating frame, and a plurality of screening slots are provided on the screening bucket, and a conveyor belt for conveying stones is provided between the discharge port of the crushing equipment body and the screening box; The screening bucket is provided with a connecting rod, one end of the connecting rod is installed with a first bar frame, and the other end of the connecting rod is connected with a second bar frame, the connecting rod is elastically connected to the second bar frame through a first spring, and the connecting rod is elastically connected to the screening bucket through a seventh spring, a first scraper bracket and a first brush plate are respectively provided below the first bar frame, a second scraper bracket and a second brush plate are respectively provided below the second bar frame, and a first abutment block is fixed to one side of the first bar frame; A mounting bracket is fixed on the screening box, a first V-shaped abutment block is arranged on one side of the screening bucket, the first V-shaped abutment block is fixed on one end of the mounting bracket, and the first abutment block abuts against the first V-shaped abutment block; A motor assembly for driving the rotating frame to rotate is fixed on the screening box, and the motor assembly includes a mounting seat, the mounting seat is fixed on the screening box, a servo motor is fixed on the mounting seat, and the motor shaft of the servo motor is drivingly connected to one end of the rotating frame through a coupling; A discharge port is provided on one side of the screening box, the discharge port is located on one side of the screen, and a plurality of arc-shaped material guide bars are fixed on the screen.

2. The mining stone crushing and screening device according to claim 1 is characterized in that: Two first sliding brackets are slidably connected in the first bar frame, the lower end of the first sliding bracket is fixedly connected to the first brush plate, a second spring is fixed to the first sliding bracket, the lower end of the second spring is pressed against the first bar frame, a first interference bracket is fixed to the first sliding bracket, a first interference rod is provided on one side of the first bar frame, the first interference rod is elastically connected to the first bar frame through a third spring, one end of the first interference rod is in conflict with the first interference bracket, and a second V-shaped interference block is fixed to the screening box.

3. The mining stone crushing and screening device according to claim 2 is characterized in that: Two second sliding brackets are slidably connected in the second bar frame, the lower ends of the second sliding brackets are fixedly connected to the second brush plate, a fourth spring is fixed on the second sliding bracket, the lower end of the fourth spring is tightly pressed against the second bar frame, a second interference bracket is fixed on the second sliding bracket, and one end of the connecting rod is in conflict with the second interference bracket.

4. The mining stone crushing and screening device according to claim 3 is characterized in that: A limiting rod is slidably connected to the screening bucket, one end of which is engaged with the second bar frame, and one end of which is slidably connected to the first bar frame via a fifth spring, and a resisting wedge is fixed to one end of the limiting rod, which resists the first resisting bracket.

5. The mining stone crushing and screening device according to claim 4 is characterized in that: A second resistance rod is fixed to one end of the first scraper bracket, and the second resistance rod is elastically connected to the first bar frame through a sixth spring. A third resistance rod is fixed to one of the first sliding brackets, and a first bar groove is provided on the first bar frame. The third resistance rod is inserted into the first bar groove. An eighth spring is fixed to the other first sliding bracket, and one end of the eighth spring is pressed against the first bar frame.

6. The mining stone crushing and screening device according to claim 5 is characterized in that: A fourth resistance rod is fixed to one end of the second scraper bracket, and the fourth resistance rod is elastically connected to the second bar frame through a ninth spring. A fifth resistance rod is fixed to one of the second sliding brackets, and a second bar groove is provided on the second bar frame. The fifth resistance rod is engaged in the second bar groove. A tenth spring is fixed to one of the second sliding brackets, and one end of the tenth spring is pressed against the second bar frame.

7. The mining stone crushing and screening device according to claim 6, characterized in that: The screening bucket is provided with a plurality of arc-shaped protrusions, the second abutting rod and the fourth abutting rod both abut against the arc-shaped protrusions, the first bar frame and the second bar frame are both provided with protective cover plates, and the first sliding bracket and the second sliding bracket are both fixed with limiting rings.

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