A combined frozen rock area mineral mining machine with screening and separating functions

Abstract

The application provides a combined frozen rock area mineral mining machine with a screening and separating function, and relates to the technical field of mining machines.The combined frozen rock area mineral mining machine comprises a mining machine body, a moving seat connected to the rear side of the mining machine body, and a screening mechanism installed on the upper part of the moving seat.The bottom of the screening mechanism is provided with a linkage mechanism, and the upper part of the linkage mechanism is provided with a knocking part on the left and right sides of the screening mechanism.The upper end surface of the mining machine body is provided with two collision mechanisms in a left-right symmetrical manner.The combined frozen rock area mineral mining machine has multiple vibration and knocking functions, can effectively prevent freshly mined slurry minerals from being frozen again, reduces the difficulty of subsequent re-screening, and improves the convenience of the mining machine in use.The linkage mechanism and the knocking part can separate the slurry mixed small particle minerals blocked in the filter screen mesh, and manual cleaning is not required, so that the influence of the mining efficiency is avoided.

Description

Technical Field

[0001] This invention relates to the field of mining machine technology, and in particular to a composite mineral mining machine for frozen rock areas with screening and separation functions. Background Technology

[0002] With the development of mineral resources and the construction of infrastructure, people's industrial activities have gradually extended to vast high-altitude areas. These areas are rich in oil, coal and mineral resources. However, open-pit mining in high-altitude and cold regions is affected by special geological environments such as high altitude and low temperature. It is common for permafrost to form on the surface of mineral resources. There are two ways in which permafrost forms: First, the water retention capacity of alpine meadows forms a soil permafrost layer under the influence of low temperature, which is the original permafrost layer. Second, loose gravel is covered with a certain thickness of ice and snow. During the day, the temperature is high, and the ice and snow melt and seep into the gaps of the gravel. At night, the temperature drops and freezes into ice, which solidifies the gravel into a whole, forming a gravel permafrost layer. Generally, this is formed when rocks are not stripped in time after blasting and is affected by the melting of ice and snow and the temperature.

[0003] However, during mining operations, ore and slurry are typically transported together. Current mining machines can only extract and transport the ore, which can easily lead to secondary freezing and soil formation in severe weather. Furthermore, subsequent ore screening and separation require additional screening equipment. Therefore, at least the following disadvantages exist, resulting in increased labor intensity and significantly reduced mining efficiency:

[0004] ① Due to the impact of secondary permafrost, subsequent separation and screening work has become difficult and complex;

[0005] ② The two independent units need to be moved separately, which reduces the convenience of using the mining machine;

[0006] ③ Moreover, when current screening devices separate minerals, small particles of minerals can easily clog the mesh of the screen, requiring the machine to be stopped for cleaning. Summary of the Invention

[0007] In view of this, the present invention provides a composite mineral mining machine for frozen rock areas with screening and separation functions to solve the above problems.

[0008] To address the aforementioned problems, this invention provides a composite mineral mining machine for frozen rock areas with screening and separation functions, comprising: a mining machine body; a movable seat connected to the rear side of the mining machine body, and a screening mechanism installed on the upper part of the movable seat; a linkage mechanism at the bottom of the screening mechanism, and a striking part on both the left and right sides of the linkage mechanism; two collision mechanisms symmetrically arranged on the upper end face of the mining machine body, and a driving mechanism installed on the left side of the upper end face of the mining machine body; a mining mechanism installed on the front side of the upper part of the mining machine body, with mining saw teeth at the front end of the mining mechanism, a shovel plate installed on the front end of the mining machine body, and a conveying device on the middle side of the upper part of the mining machine body.

[0009] Optionally, the screening mechanism includes a screening box, a first discharge port, a second discharge port, a detachable vibrating plate, a sliding cylinder, a support frame, and a guide plate. Two sliding cylinders are fixedly connected to the bottom of the screening box, and a support guide rod is slidably connected inside each sliding cylinder. The two support guide rods are fixedly connected to the upper surface of the movable seat. A support frame is fixedly connected inside the screening box, and a guide plate is provided at the rear end of the screening box. The rear end of the screening box has a first discharge port, and a rectangular opening is provided on the right end face of the screening box. A second discharge port is located outside the rectangular opening. A detachable vibrating plate is bolted to the front side of both the left and right ends of the screening box. The screening mechanism also includes a lifting frame and T-shaped sliding columns A. Eight T-shaped sliding columns A are welded symmetrically on the bottom end face of the lifting frame, and each T-shaped sliding column A passes through the support frame. A screen is fixedly embedded inside the lifting frame. A spring is sleeved on the outside of each T-shaped sliding column A between the lifting frame and the support frame. The rear side of the bottom end face of the screening box is inclined downwards at an angle of four to seven degrees.

[0010] Optionally, the linkage mechanism includes a drive shaft, transmission gears, fixed racks, a transmission shaft, and cams. There are two drive shafts, each rotatably connected to the left and right end faces of the screening box, with a transmission gear fixedly connected to both ends of each drive shaft. There are two fixed racks, fixedly connected to the upper end face of the movable seat, and meshing with four transmission gears. There are two transmission shafts, each rotatably connected to the upper part of the left and right end faces of the screening box, with a cam fixedly connected to the outside of each transmission shaft. A drive pulley is provided outside the drive shaft, and a driven pulley is provided outside the transmission shaft; the driven pulley is connected to the drive pulley via a belt.

[0011] Optionally, the striking part includes a fixed plate, a lifting plate, T-shaped sliding columns B, and a striking column. The fixed plate is fixedly connected to the screening box, and four T-shaped sliding columns B are fixedly connected to the bottom end face of the fixed plate. The lifting plate is slidably connected to the four T-shaped sliding columns B, and a spring is sleeved on the outside of each T-shaped sliding column B between the opposite surfaces of the fixed plate and the lifting plate. A striking column is fixedly connected to the bottom end face of the lifting plate. When the cam protrusion is in close contact with the bottom end face of the lifting plate, the lifting plate will move the striking column upward, and the spring on the outside of the T-shaped sliding column B will be compressed.

[0012] Optionally, the collision mechanism includes a fixed rod, a fixed plate, a collision plate, and T-shaped sliding columns C. The fixed rod is fixedly connected to the upper end face of the movable seat, and the fixed plate is fixedly connected to the upper end of the fixed rod. Four T-shaped sliding columns C are provided on one side of the fixed plate, and the collision plate is slidably connected to the outside of the four T-shaped sliding columns C. A spring is sleeved on the outside of each T-shaped sliding column C between the fixed plate and the collision plate. A circular striking block is provided on one side of the collision plate.

[0013] Optionally, the driving mechanism includes a vertical rotating shaft, a transmission disk, a drive motor, and a connecting rod. The vertical rotating shaft is rotatably connected to the upper part of the movable seat, and the upper and lower ends of the vertical rotating shaft are respectively provided with a transmission disk and a worm gear. The drive motor is mounted on the upper part of the movable seat, and a worm gear is fixedly connected to the rotating shaft of the drive motor, and the worm gear meshes with the worm gear. A connecting rod is rotatably connected to the upper edge of the transmission disk via a rotating shaft, and the other end of the connecting rod is rotatably connected to the left end face of the screening box via a rotating shaft. When the transmission disk is rotating, the screening box will be in a reciprocating left-right movement state, and the two detachable vibrating plates on the screening box will collide with the circular striking blocks on the two collision plates in sequence.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. According to various embodiments of the present invention, compared with traditional mining machines, the mining machine sets the screening mechanism on the movable seat, and the movable seat is connected to the rear side of the mining machine body, so that the mining machine body and the screening mechanism are combined together. Thus, the mining machine body can move the movable seat and the screening mechanism together. It has multiple vibration and knocking functions integrated, which can effectively prevent the freshly mined muddy minerals from freezing again and reduce the difficulty of subsequent screening, thereby improving the convenience of the mining machine in use.

[0016] 2. Through the coordination of the linkage mechanism and the striking part, the two drive shafts can move back and forth while the screening box moves left and right. Then, through the meshing of the fixed rack and the transmission gear, the transmission gear drives the drive shaft to rotate. Then, through the rotation of the driving pulley, driven pulley, transmission shaft, and cam, when the cam protrusion separates from the bottom surface of the lifting plate, the lifting plate will move downward rapidly with the striking column under the action of the spring. This causes the lower end of the striking column to collide with the upper surface of the lifting frame, thereby striking the screen inside the lifting frame. This removes the small particles of mud and water mixed with minerals that are clogging the screen mesh, eliminating the need for manual cleaning and avoiding any impact on mining efficiency, thus greatly reducing labor intensity.

[0017] 3. Through the design of the collision mechanism, when the screening box moves left and right, the two detachable vibrating plates will collide with the circular striking blocks on the two collision plates, thereby causing the two detachable vibrating plates and the screening box to vibrate. This allows the minerals inside the screening box to vibrate when the screening box moves left and right, making the feeding of minerals inside the screening box more efficient. The structure is simple, the cost is low, and it has good practicality.

[0018] 4. Through the linkage mechanism, the cam can rotate during the reciprocating movement of the screening box. Then, in conjunction with the external spring of the T-shaped slide column B, the lifting plate can move up and down automatically. This eliminates the need for a separate motor or other electric drive device when the striking column strikes the upper surface of the lifting frame, which not only reduces costs but also effectively saves energy. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0020] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0021] In the attached diagram:

[0022] Figure 1 A schematic diagram of a mining machine from a first perspective according to an embodiment of the present invention is shown;

[0023] Figure 2 An embodiment according to the present invention is shown. Figure 1 A magnified view of a portion of point A in the diagram;

[0024] Figure 3 A schematic diagram of a mining machine from a second perspective according to an embodiment of the present invention is shown;

[0025] Figure 4A schematic diagram of a mining machine in a split state according to an embodiment of the present invention is shown;

[0026] Figure 5 A schematic diagram of the sieving box and lifting frame after disassembly according to an embodiment of the present invention is shown;

[0027] Figure 6 A schematic diagram of the linkage mechanism and the striking part according to an embodiment of the present invention is shown;

[0028] Figure 7 A schematic diagram of a cam and a striking part according to an embodiment of the present invention is shown;

[0029] Figure 8 A schematic diagram of a collision mechanism according to an embodiment of the present invention is shown.

[0030] List of reference numerals

[0031] 1. Mining machine body; 101. Shovel plate; 102. Mining mechanism; 103. Mining saw teeth; 104. Conveying device; 2. Moving seat; 3. Screening mechanism; 301. Screening box; 302. Lifting frame; 303. First discharge port; 304. Second discharge port; 305. Detachable vibrating plate; 306. Sliding cylinder; 307. T-shaped sliding column A; 308. Support frame; 309. Guide inclined plate; 4. Linkage mechanism; 401. Drive shaft; 40 2. Transmission gear; 403. Fixed rack; 404. Transmission shaft; 405. Cam; 5. Striking part; 501. Fixed plate; 502. Lifting plate; 503. T-shaped slide column B; 504. Striking column; 6. Collision mechanism; 601. Fixed rod; 602. Fixed plate; 603. Collision plate; 604. T-shaped slide column C; 7. Drive mechanism; 701. Vertical shaft; 702. Transmission disc; 703. Drive motor; 704. Connecting rod. Detailed Implementation

[0032] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0033] Example: Please refer to Figures 1 to 8 :

[0034] This invention proposes a composite mineral mining machine for frozen rock areas with screening and separation functions, comprising: a mining machine body 1; a movable seat 2 connected to the rear side of the mining machine body 1, and a screening mechanism 3 installed on the upper part of the movable seat 2; a linkage mechanism 4 provided at the bottom of the screening mechanism 3, and a striking part 5 provided on both the left and right sides of the linkage mechanism 4; two collision mechanisms 6 symmetrically provided on the upper end face of the mining machine body 1, and a driving mechanism 7 installed on the left side of the upper end face of the mining machine body 1; a mining mechanism 102 installed on the upper front side of the mining machine body 1, and a mining saw tooth 103 provided at the front end of the mining mechanism 102; a shovel plate 101 installed on the front end of the mining machine body 1 for shoveling up the mined minerals; and a conveying device 104 provided on the upper middle side of the mining machine body 1 for conveying the mined minerals. By placing the screening mechanism 3 at the rear of the mining machine body 1, this invention can promptly screen the mined minerals, leaving behind mud and small particles, effectively avoiding secondary freezing in cold environments.

[0035] Furthermore, according to embodiments of the present invention, such as Figure 1 and Figure 5As shown, the screening mechanism 3 includes a screening box 301, a first discharge port 303, a second discharge port 304, a detachable vibrating plate 305, a sliding cylinder 306, a support frame 308, and a guide plate 309. Two sliding cylinders 306 are fixedly connected to the bottom of the screening box 301, and each sliding cylinder 306 has a supporting guide rod slidably connected inside. The two supporting guide rods are fixedly connected to the upper surface of the movable seat 2. Through the cooperation of the two sliding cylinders 306 and the two supporting guide rods, the screening box 301 can move inwards... When moving back and forth, it can achieve effective guidance; a support frame 308 is fixedly connected inside the screening box 301, and a guide plate 309 is provided at the rear end of the screening box 301. A first discharge port 303 is provided at the rear end of the screening box 301, and a rectangular opening is provided on the right end face of the screening box 301. A second discharge port 304 is provided on the right end face of the screening box 301 outside the rectangular opening. A detachable vibrating plate 305 is bolted to the front of both the left and right ends of the screening box 301; the screening mechanism 3 also includes The lifting frame 302 and T-shaped sliding columns A307 are included. Eight T-shaped sliding columns A307 are symmetrically welded to the bottom surface of the lifting frame 302, and each T-shaped sliding column A307 penetrates the support frame 308. A screen is fixedly embedded inside the lifting frame 302. A spring is fitted around each T-shaped sliding column A307 between the lifting frame 302 and the support frame 308, giving the lifting frame 302 upward elasticity. This allows the lifting frame 302 to automatically spring back to its original position after being struck by the striking column 504. The bottom end of the screening box 301 is inclined downwards at an angle of four to seven degrees. This allows the minerals inside the screening box 301 to be quickly discharged from the first discharge port 303 and the second discharge port 304 at the rear end under the combined action of the inclination and the left and right shaking of the screening box 301. The size of the first discharge port 303 is larger than that of the second discharge port 304. The first discharge port 303 is used to discharge large particles of minerals, while the second discharge port 304 is used to discharge small particles of minerals, as well as cement and other impurities.

[0036] like Figure 2 , Figure 6 and Figure 7As shown, the linkage mechanism 4 includes a drive shaft 401, transmission gears 402, fixed racks 403, transmission shafts 404, and a cam 405. There are two drive shafts 401, rotatably connected to the left and right end faces of the screening box 301 respectively. Each drive shaft 401 has a transmission gear 402 fixedly connected to both ends. There are two fixed racks 403, fixedly connected to the upper end face of the movable seat 2, and meshing with four transmission gears 402. The number of transmission shafts 404 is... Two drive shafts 404 are rotatably connected to the upper part of the left and right end faces of the screening box 301, respectively. Each drive shaft 404 is fixedly connected to a cam 405. The drive shaft 401 is provided with an active pulley, and the drive shaft 404 is provided with a driven pulley. The driven pulley is connected to the active pulley via a belt. Through the linkage mechanism 4, the striking column 504 strikes the upper surface of the lifting frame 302, which improves the screening efficiency. At the same time, there is no need to install a separate electric motor or other electric drive device, thereby reducing costs and saving energy consumption.

[0037] like Figure 1 , Figure 2 and Figure 7 As shown, the striking part 5 includes a fixed plate 501, a lifting plate 502, T-shaped sliding columns B503, and a striking column 504. The fixed plate 501 is fixedly connected to the screening box 301, and four T-shaped sliding columns B503 are fixedly connected to the bottom surface of the fixed plate 501. The lifting plate 502 is slidably connected to the four T-shaped sliding columns B503, and a spring is sleeved on the outside of each T-shaped sliding column B503 between the opposite surfaces of the fixed plate 501 and the lifting plate 502. A striking column 504 is fixedly connected to the bottom surface of the lifting plate 502. When When the protrusion of cam 405 is in close contact with the bottom surface of lifting plate 502, lifting plate 502 will move upward with striking column 504, and the external spring of T-shaped slide column B503 will be compressed. Thus, when the protrusion of cam 405 separates from the bottom surface of lifting plate 502, lifting plate 502 can move downward quickly with striking column 504 under its own weight and the action of external spring of T-shaped slide column B503, so that striking column 504 has a better striking effect when striking the upper surface of lifting frame 302.

[0038] like Figure 2 and Figure 8As shown, the collision mechanism 6 includes a fixed rod 601, a fixed plate 602, a collision plate 603, and T-shaped sliding columns C604. The fixed rod 601 is fixedly connected to the upper end face of the movable seat 2, and the fixed plate 602 is fixedly connected to the upper end of the fixed rod 601. Four T-shaped sliding columns C604 are provided on one side of the fixed plate 602, and the collision plate 603 is slidably connected to the outside of the four T-shaped sliding columns C604. A spring is sleeved on the outside of each T-shaped sliding column C604 between the fixed plate 602 and the collision plate 603. A circular striking block is provided on one side of the collision plate 603 for colliding with the detachable vibrating plate 305, so that the detachable vibrating plate 305 vibrates, further improving the screening efficiency.

[0039] like Figure 3 and Figure 5 As shown, the drive mechanism 7 includes a vertical rotating shaft 701, a transmission disc 702, a drive motor 703, and a connecting rod 704. The vertical rotating shaft 701 is rotatably connected to the upper part of the movable base 2, and the upper and lower ends of the vertical rotating shaft 701 are respectively provided with the transmission disc 702 and the worm gear; the drive motor 703 is mounted on the upper part of the movable base 2, and a worm is fixedly connected to the rotating shaft of the drive motor 703, and the worm meshes with the worm gear; the upper edge of the transmission disc 702 is rotatably connected to the connecting rod 704 through the rotating shaft. The other end of the connecting rod 704 is rotatably connected to the left end face of the screening box 301 via a rotating shaft. When the transmission disc 702 is rotating, the screening box 301 will be in a reciprocating motion state, and the two detachable vibrating plates 305 on the screening box 301 will collide with the circular striking blocks on the two collision plates 603 in turn, thereby causing the collision plates 603 and the screening box 301 to vibrate, which improves the feeding efficiency of the minerals inside the screening box 301 and also prevents the mud-water mixture from coagulating again.

[0040] The specific usage and function of this embodiment: In this invention, the main body 1 of the mining machine moves to the mining position with the moving seat 2, and then the mining saw teeth 103 are used to mine the mineral. Then the mining saw teeth 103 are used to scoop up the mined mineral. The scooped mineral is then transported to the screen inside the lifting frame 302 by the conveying device 104. Then the drive motor 703 is started, and the rotating shaft on the drive motor 703 drives the worm to rotate, so that the worm wheel drives the vertical rotating shaft 701 to rotate. Then the transmission disc 702 drives one end of the connecting rod 704 to rotate, so that the other end of the connecting rod 704 drives the screening box 301 to move back and forth, so that the collision plate 603 and the screening box 301 vibrate. This separates minerals of different sizes, water, mud and some ice from the minerals, reducing the subsequent secondary freezing. After screening, different screening materials are discharged from the first discharge port 303 and the second discharge port 304 respectively.

[0041] During the reciprocating movement of the screening box 301, the two drive shafts 401 move back and forth. Then, through the meshing of the fixed rack 403 and the transmission gear 402, the transmission gear 402 drives the drive shaft 401 to rotate. The driving pulley drives the driven pulley to rotate through the belt, which in turn drives the transmission shaft 404 to rotate the cam 405. When the protrusion of the cam 405 is in close contact with the bottom surface of the lifting plate 502, the lifting plate 502 will move the striking column 504 upward, and the external spring of the T-shaped sliding column B503 will be compressed. Then, when the protrusion of the cam 405 separates from the bottom surface of the lifting plate 502, the lifting plate 502 will move the striking column 504 downward rapidly under the action of the spring, so that the lower end of the striking column 504 collides with the upper surface of the lifting frame 302, thereby knocking the screen inside the lifting frame 302 and removing the small particles of mud and minerals that are clogging the screen mesh.

[0042] When the screening box 301 moves to the right position, the right end face of a detachable vibrating plate 305 on the right side will collide with the left end of a circular striking block on a collision plate 603 on the right side, thereby causing the detachable vibrating plate 305 and the screening box 301 to vibrate. When the screening box 301 moves to the left position, the left end face of a detachable vibrating plate 305 on the left side will collide with the right end of a circular striking block on a collision plate 603 on the left side, thereby causing the detachable vibrating plate 305 and the screening box 301 to vibrate. As the screening box 301 moves left and right, the minerals inside the screening box 301 are vibrated, preventing them from condensing inside.

[0043] Finally, it should be noted that when describing the position of each component and the mating relationship between them, the present invention usually uses one or a pair of components as examples. However, those skilled in the art should understand that such positions, mating relationships, etc., are also applicable to other components or other pairs of components.

[0044] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1. A composite mineral mining machine for frozen rock areas with screening and separation functions, characterized in that, include: The main body of the mining machine (1) is connected to a movable seat (2) at the rear, and a screening mechanism (3) is installed on the upper part of the movable seat (2); a linkage mechanism (4) is provided at the bottom of the screening mechanism (3), and a striking part (5) is provided on both the left and right sides of the upper part of the linkage mechanism (4); two collision mechanisms (6) are provided on the upper end face of the mining machine (1) in a symmetrical manner, and a drive mechanism (7) is installed on the left side of the upper end face of the mining machine (1); a mining mechanism (102) is installed on the upper front side of the mining machine (1), and a mining saw tooth (103) is provided at the front end of the mining mechanism (102); a shovel plate (101) is installed on the front end of the mining machine (1), and a conveying device (104) is provided on the upper middle side of the mining machine (1); The screening mechanism (3) includes a screening box (301), a first discharge port (303) is provided at the rear end of the screening box (301), and a rectangular opening is provided on the right end face of the screening box (301), and a second discharge port (304) is provided on the right end face of the screening box (301) outside the rectangular opening. The screening mechanism (3) further includes a first discharge port (303), a second discharge port (304), a detachable vibrating plate (305), a sliding cylinder (306), a support frame (308), and a guide plate (309). The bottom of the screening box (301) is fixedly connected to two sliding cylinders (306), and each sliding cylinder (306) is slidably connected to a support guide rod. The two support guide rods are fixedly connected to the upper end face of the moving seat (2). The screening box (301) is fixedly connected to a support frame (308), and the rear end of the screening box (301) is provided with a guide plate (309). The front sides of both the left and right ends of the screening box (301) are each connected to a detachable vibrating plate (305) by bolts. The screening mechanism (3) further includes a lifting frame (302) and T-shaped sliding columns A (307). Eight T-shaped sliding columns A (307) are welded symmetrically on the bottom surface of the lifting frame (302), and each T-shaped sliding column A (307) passes through the support frame (308). A screen is fixedly embedded inside the lifting frame (302). A spring is sleeved on the outside of each T-shaped sliding column A (307) between the lifting frame (302) and the support frame (308). The linkage mechanism (4) includes a drive shaft (401), a transmission gear (402), a fixed rack (403), a transmission shaft (404), and a cam (405). There are two drive shafts (401), each rotatably connected to the left and right ends of the screening box (301). Each drive shaft (401) has a transmission gear (402) fixedly connected to both ends. There are also two fixed racks (403), each fixedly connected to the cam. The upper end face of the moving seat (2) is connected to two fixed racks (403) and four transmission gears (402); there are two transmission shafts (404), and the two transmission shafts (404) are rotatably connected to the upper part of the left and right end faces of the screening box (301), and a cam (405) is fixedly connected to the outside of each transmission shaft (404); the drive shaft (401) is provided with a driving pulley, and the transmission shaft (404) is provided with a driven pulley, and the driven pulley is connected to the driving pulley by a belt.

2. The composite frozen rock mining machine with screening and separation function as described in claim 1, characterized in that: The striking part (5) includes a fixed plate (501), a lifting plate (502), a T-shaped sliding column B (503) and a striking column (504). The fixed plate (501) is fixedly connected to the screening box (301), and four T-shaped sliding columns B (503) are fixedly connected to the bottom end face of the fixed plate (501). The lifting plate (502) is slidably connected to the outside of the four T-shaped sliding columns B (503), and a spring is sleeved between the opposite surfaces of the fixed plate (501) and the lifting plate (502) on the outside of each T-shaped sliding column B (503). A striking column (504) is fixedly connected to the bottom end face of the lifting plate (502).

3. The composite frozen rock mining machine with screening and separation function as described in claim 2, characterized in that: When the protrusion of the cam (405) is in close contact with the bottom surface of the lifting plate (502), the lifting plate (502) will move upward with the striking column (504), and the external spring of the T-shaped sliding column B (503) will be in a compressed state.

4. The composite frozen rock mining machine with screening and separation function as described in claim 1, characterized in that: The collision mechanism (6) includes a fixed rod (601), a fixed plate (602), a collision plate (603), and a T-shaped sliding column C (604). The fixed rod (601) is fixedly connected to the upper end face of the movable seat (2), and the fixed plate (602) is fixedly connected to the upper end of the fixed rod (601). Four T-shaped sliding columns C (604) are provided on one side of the fixed plate (602), and the collision plate (603) is slidably connected to the outside of the four T-shaped sliding columns C (604). A spring is sleeved between the fixed plate (602) and the collision plate (603) on the outside of each T-shaped sliding column C (604). A circular striking block is provided on one side of the collision plate (603).

5. The composite frozen rock mining machine with screening and separation function as described in claim 4, characterized in that: The driving mechanism (7) includes a vertical rotating shaft (701), a transmission disc (702), a drive motor (703), and a connecting rod (704). The vertical rotating shaft (701) is rotatably connected to the upper part of the movable seat (2), and the upper and lower ends of the vertical rotating shaft (701) are respectively provided with a transmission disc (702) and a worm gear. The drive motor (703) is installed on the upper part of the movable seat (2), and the rotating shaft on the drive motor (703) is fixedly connected to a worm, and the worm meshes with the worm gear. The upper edge of the transmission disc (702) is rotatably connected to the connecting rod (704) through the rotating shaft, and the other end of the connecting rod (704) is rotatably connected to the left end face of the screening box (301) through the rotating shaft.

6. The composite frozen rock mining machine with screening and separation function as described in claim 5, characterized in that: When the transmission disc (702) is rotating, the screening box (301) will be in a reciprocating motion, and the two detachable vibrating plates (305) on the screening box (301) will collide with the circular striking blocks on the two collision plates (603) in turn.

7. The composite frozen rock mining machine with screening and separation function as described in claim 1, characterized in that: The bottom end face of the screening box (301) is inclined downwards at an angle of four to seven degrees.

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