Reciprocating type ore screening and crushing device

Abstract

The invention belongs to the technical field of ore crushing, and relates to a reciprocating type ore screening and crushing device which comprises a rack, a shell, a crushing wheel shaft, a driving motor and a gearbox, the upper portion of the rack is connected with the shell, and the shell is provided with a feeding port used for adding ore and a feeding port used for allowing incompletely-crushed ore to enter; a discharging port is formed in the bottom of the shell, crushing wheel shafts are rotationally connected to the front side and the rear side of the lower portion in the shell, a driving motor and a gearbox are installed on the shell, and the gearbox is provided with two output shafts. According to the ore crushing device, when ores are crushed, the ores which are not crushed to be qualified fall to the containing frame through the screen frame and then are moved to the feeding opening of the shell through the containing frame, the containing frame is opened, the ores are poured into the shell again to be crushed, and therefore the effects that the ores which are not completely crushed are automatically collected and fed into the crushing procedure again are achieved; and the operation is more convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of ore crushing and relates to a reciprocating screening ore crushing device. Background Art

[0002] Ore refers to stones containing certain valuable minerals mined from mines. After being processed step by step through crushing, grinding, etc., the ore can be used in engineering fields such as metal mining, metallurgy industry, chemical industry, construction industry, railway (highway) construction units, cement industry and sand and gravel industry.

[0003] At present, when crushing ore, the ore is usually sent to the crusher, and a screen is set under the discharge port of the crusher so that the crushed ore falls on the screen for screening. After the screening, if the size of the ore does not meet the standard, the ore that does not meet the standard size remaining on the screen needs to be taken out again and sent to the crusher for crushing. Manual operation is required in this process, and the overall operation process is relatively cumbersome and inefficient. Summary of the Invention

[0004] In view of this, the present invention provides a reciprocating screening ore crushing device.

[0005] The technical solution of the present invention is: a reciprocating screening ore crushing device, comprising a frame, a shell, a crushing wheel shaft, a driving motor, a gearbox, a discharge hopper, a screening mechanism and a reciprocating crushing mechanism, the upper part of the frame is connected to the shell, the shell is provided with a feeding port for adding ore and a feeding port for allowing uncrushed ore to enter, the bottom of the shell is provided with a discharge port, the front and rear sides of the lower part of the shell are rotatably connected to the crushing wheel shaft, the shell is equipped with a driving motor and a gearbox, the gearbox is provided with two output shafts, the two output shafts of the gearbox are respectively connected to the two crushing wheel shafts, the input shaft of the gearbox is connected to the output shaft of the driving motor, the lower part of the frame is connected with a discharge hopper, the discharge hopper is located below the shell, and the frame is provided with a screening mechanism and a reciprocating crushing mechanism for screening ore.

[0006] Furthermore, the screening mechanism includes a swing arm, a screen frame, a connecting rod, an intermittent gear and a transmission gear 1. Two swing arms are rotatably connected to both sides of the lower part of the shell. A screen frame for screening the crushed ore is hingedly connected between the bottoms of the four swing arms. The screen frame is set to be higher in the front and lower in the back. The screen frame is located between the discharge hopper and the shell. A transmission gear 1 is rotatably connected to the shell, and a connecting rod is connected to the transmission gear 1. The end of the connecting rod is slidably connected to the screen frame. Intermittent gears are connected to the two crushing wheel shafts, and the intermittent gears can engage with the transmission gear 1 when rotating.

[0007] Furthermore, the teeth on the two intermittent gears are staggered. When the front intermittent gear rotates to engage with transmission gear one, the rear intermittent gear disengages from transmission gear one. When the rear intermittent gear rotates to engage with transmission gear one, the front intermittent gear disengages from transmission gear one.

[0008] Furthermore, the reciprocating crushing mechanism includes a connecting frame, a servo motor, a chain transmission group, a connecting plate, a swinging plate, an elastic shielding curtain, a connecting rack, a transmission gear 2 and an elastic member 1. Two connecting frames are connected to both sides of the frame, and a chain transmission group is installed between the two connecting frames on both sides. The transmission shafts of the two chain transmission groups are connected, a servo motor is installed on one of the connecting frames, the output shaft of the servo motor is connected to the transmission shaft of the chain transmission group, and a plurality of connecting plates are evenly spaced and connected on the two chain transmission groups, the connecting plates are hingedly connected with a swinging plate, and the elastic shielding curtain is connected between the swinging plate and the connecting plate, the swinging plate, the connecting plate and the elastic shielding curtain constitute a holding frame, an elastic member 1 is connected between the swinging plate and the connecting plate, and the chain transmission group can rotate the opening position of the holding frame to the lower rear side of the screen frame, and a connecting shaft is provided at the position where the swinging plate is connected to the connecting plate, and the left and right sides of the connecting shaft of the swinging plate are connected to the transmission gear 2, and the two connecting frames are connected to the connecting racks, and the two connecting racks are respectively located at the moving tracks of the two transmission gears 2.

[0009] Furthermore, it also includes an interval feeding mechanism, which includes a baffle, an expansion plate, a cylinder body, a connecting pipe, a piston rod 1, a piston rod 2 and an elastic member 2. Baffles are slidably connected to both sides of the lower part of the shell, and one of the baffles is connected to the expansion plate, and the expansion plate is located at the moving track of the screen frame. The lower parts of both sides of the shell are connected to the cylinder body, and a partition is arranged between the cylinder body, dividing the inner part of the cylinder body into two liquid chambers, one of which is slidingly and sealingly connected to piston rod 1 at the liquid chamber, and piston rod 1 is connected to one of the baffles, and piston rod 2 is slidingly and sealingly connected to the liquid chamber on the other side, and piston rod 2 is connected to the other baffle. A connecting pipe is connected between the liquid storage chambers on both sides of the cylinder body, and the liquid storage chamber on the front side of the piston rod 1, the connecting pipe and the liquid storage chamber on the front side of the piston rod 2 are all filled with liquid, and an elastic member 2 is connected between the piston rod 2 and the cylinder body.

[0010] Furthermore, it also includes a toggle mechanism, which includes a driving rack, a driving gear, a movable frame, a toggle frame, three elastic members and a reciprocating screw rod. The discharging hopper is connected to the driving rack, the screen frame is rotatably connected to the reciprocating screw rod, the reciprocating screw rod is connected to the driving gear through a one-way clutch, the driving rack is located at the moving track of the driving gear, the reciprocating screw rod is connected to the movable frame by a thread, the movable frame is slidably connected to the screen frame, and the movable frame is slidably connected to the toggle frame, and both sides of the movable upper part of the toggle frame are inclined, the upper part of the toggle frame extends into the mesh of the screen frame, and a plurality of elastic members three are evenly spaced and connected between the toggle frame and the movable frame.

[0011] Furthermore, a blocking plate is also included. The shell is connected to the blocking plate, and the blocking plate is used to block the ore during the crushing process.

[0012] Furthermore, a cover is also included, and the shell is rotatably connected to the cover for blocking the feeding port.

[0013] Beneficial effects: 1. When the present invention crushes the ore, the unqualified ore will fall into the holding frame through the screen frame, and then move to the feed port of the shell through the holding frame, and the holding frame is opened to pour the ore into the shell again for crushing, thereby realizing the effect of automatically collecting the incompletely crushed ore and sending it to the crushing process again, which is more convenient to operate.

[0014] 2. After the ore is crushed, the ore will fall on the baffle, which will block the ore. When the screen frame moves, it can push the expansion plate to move, thereby driving the baffles on both sides to move through the cylinder body, connecting pipe, piston rod 1 and piston rod 2, so that the ore falls intermittently, avoiding the impact of excessive ore falling on screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the first structure of the screening mechanism of the present invention.

[0017] Figure 3 It is a structural schematic diagram of the screening mechanism after the shell of the present invention is cut open.

[0018] Figure 4 This is a second structural diagram of the screening mechanism of the present invention.

[0019] Figure 5 This is a schematic diagram of the first structure of the reciprocating crushing mechanism of the present invention.

[0020] Figure 6 This is a second structural schematic diagram of the reciprocating crushing mechanism of the present invention.

[0021] Figure 7 It is a schematic structural diagram of the swing plate, elastic shielding curtain and connecting rack of the present invention.

[0022] Figure 8 Schematic diagram of the structure of the swing plate, connecting plate and elastic member 1 of the present invention.

[0023] Figure 9 It is a schematic structural diagram of the swing plate of the present invention after it is unfolded.

[0024] Figure 10 This is a schematic diagram of the first structure of the interval blanking mechanism of the present invention.

[0025] Figure 11 This is a second structural schematic diagram of the interval blanking mechanism of the present invention.

[0026] Figure 12 It is a cross-sectional view of the interval blanking mechanism of the present invention.

[0027] Figure 13 This is a schematic diagram of the first structure of the toggle mechanism of the present invention.

[0028] Figure 14 This is a schematic diagram of the second structure of the toggle mechanism of the present invention.

[0029] Figure 15 It is a cross-sectional view of the toggle mechanism of the present invention.

[0030] Figure 16 It is a structural schematic diagram of the shell and the baffle plate of the present invention.

[0031] The numbers in the figure are: 1-frame, 2-shell, 3-crushing wheel shaft, 41-drive motor, 42-gearbox, 5-discharge hopper, 61-swing arm, 62-screen frame, 63-connecting rod, 64-intermittent gear, 65-transmission gear 1, 71-connecting frame, 711-servo motor, 72-chain transmission group, 73-connecting plate, 74-swinging plate, 75-elastic shielding curtain, 76-connecting rack, 77-transmission gear 2, 78-elastic part 1, 81-baffle, 82-expansion plate, 83-cylinder, 84-connecting pipe, 85-piston rod 1, 86-piston rod 2, 87-elastic part 2, 91-drive rack, 92-drive gear, 93-movable frame, 931-switching frame, 932-elastic part 3, 94-reciprocating screw, 10-blocking plate, 11-lid. DETAILED DESCRIPTION

[0032] The following is a clear and complete description of 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 making creative efforts are within the scope of protection of the present invention.

[0033] A reciprocating screening ore crushing device, such as Figures 1-8 As shown, it includes a frame 1, a shell 2, a crushing wheel shaft 3, a drive motor 41, a gearbox 42, a discharge hopper 5, a screening mechanism and a reciprocating crushing mechanism. The upper part of the frame 1 is connected to the shell 2, and a feeding port for adding ore is opened on the upper front side of the shell 2, and a feeding port for allowing uncrushed ore to enter is opened on the upper rear side of the shell 2. A discharge port is opened at the bottom of the shell 2, and the crushing wheel shaft 3 is rotatably connected on both sides of the lower part of the shell 2. The drive motor 41 and the gearbox 42 are installed on the rear side of the shell 2. The gearbox 42 is provided with two output shafts, and the two output shafts of the gearbox 42 are respectively connected to the two crushing wheel shafts 3. The input shaft of the gearbox 42 is connected to the output shaft of the drive motor 41, so that the drive motor 41 can drive the crushing wheel shaft 3 to rotate through the gearbox 42 to add ore into the shell 2. The lower part of the frame 1 is connected to the discharge hopper 5, and the discharge hopper 5 is located below the shell 2. The frame 1 is provided with a screening mechanism and a reciprocating crushing mechanism for screening ore.

[0034] like Figure 2-Figure 4 As shown, the screening mechanism includes a swing arm 61, a screen frame 62, a connecting rod 63, an intermittent gear 64 and a transmission gear 1 65. Two swing arms 61 are rotatably connected on the left and right sides of the lower part of the shell 2. The screen frame 62 is hingedly connected between the bottoms of the four swing arms 61. The screen frame 62 is set to be high in the front and low in the back. The screen frame 62 is located between the discharge hopper 5 and the shell 2. The screen frame 62 is used to screen the crushed ore. The middle left side of the shell 2 is rotatably connected to the transmission gear 1 65. The connecting rod 63 is connected to the transmission gear 1 65. The end of the connecting rod 63 is slidably connected to the screen frame 62 so that the connecting rod 63 can push the screen frame 62 to move back and forth when swinging, thereby assisting in screening the ore. Intermittent gears 64 are connected to the left sides of the two crushing wheel shafts 3. The intermittent gear 64 can rotate to engage with the transmission gear 1 65.

[0035] like Figure 2-Figure 4 As shown, the teeth on the two intermittent gears 64 are staggered so that when the front intermittent gear 64 rotates to engage with the transmission gear 1 65, the rear intermittent gear 64 disengages from the transmission gear 1 65, and when the rear intermittent gear 64 rotates to engage with the transmission gear 1 65, the front intermittent gear 64 disengages from the transmission gear 1 65.

[0036] like Figure 5-Figure 9 As shown, the reciprocating crushing mechanism includes a connecting frame 71, a servo motor 711, a chain transmission group 72, a connecting plate 73, a swinging plate 74, an elastic shielding curtain 75, a connecting rack 76, a transmission gear 2 77 and an elastic member 1 78. Two connecting frames 71 are connected to the left and right sides of the rear side of the frame 1. A chain transmission group 72 is installed between the two connecting frames 71 on the left and right sides. The transmission shafts of the two chain transmission groups 72 are connected. A servo motor 711 is installed on one of the connecting frames 71. The output shaft of the servo motor 711 is connected to the transmission shaft of the chain transmission group 72 so that the operation of the servo motor 711 can drive the chain transmission group 72 to rotate. A plurality of connecting plates 73 are evenly spaced apart on the two chain transmission groups 72. The connecting plates 73 are hingedly connected to the swinging plates 74. An elastic shielding curtain 75 is connected between the swinging plates 74 and the connecting plates 73. The cam 74 is connected to the upper and lower parts of the screen frame 62, and the cam 74 is connected to the lower part of the screen frame 62 by a spring.

[0037] When it is necessary to crush the ore, the present crushing device can be used. When in use, the ore can be first added into the shell 2 through the feeding port, and then the drive motor 41 can be controlled to operate to drive the crushing wheel shaft 3 to rotate through the gearbox 42 to crush the ore. The crushed ore falls on the screen frame 62 through the discharge port at the shell 2. When the crushing wheel shaft 3 rotates, it can drive the intermittent gear 64 to rotate. When the intermittent gear 64 rotates, it can intermittently mesh with the transmission gear 1 65 and drive the transmission gear 1 65 to rotate. When the front intermittent gear 64 rotates to mesh with the transmission gear 1 65, it can drive the transmission gear 1 65 to rotate forward, and when the rear intermittent gear 64 rotates to mesh with the transmission gear 1 65, it can drive the transmission gear 1 65 to reverse, thereby driving the transmission gear 1 65 to rotate alternately forward and reverse. When the transmission gear 1 65 rotates alternately forward and reverse, it can drive the connecting rod 63 to swing back and forth, and the connecting rod 6 When the screen frame 62 is swung, it can drive the screen frame 62 to move, causing the screen frame 62 to shake back and forth to screen the ore. Ores of qualified size will pass through the screen frame 62 and fall into the discharge hopper 5 and be discharged through the discharge hopper 5, while ores of unqualified size will move backward along the screen frame 62 and fall into the holding frame. At the same time, the servo motor 711 can be controlled to drive the chain transmission group 72 to rotate to transport the holding frame. After the transmission gear 2 77 on the swing plate 74 moves to engage with the connecting rack 76, the transmission gear 2 77 continues to move and rotates through the connecting rack 76, thereby driving the swing plate 74 to swing. After the swing plate 74 swings, the holding frame is opened, allowing the ore in the holding frame to enter the housing 2 again through the feed port for crushing. This is repeated, and the ore can be crushed using the device. During crushing, the incompletely crushed ore can be automatically collected and sent to the housing 2 for crushing again, making the operation more convenient.

[0038] like Figure 10-12As shown, it also includes an interval blanking mechanism, which includes a baffle 81, an expansion plate 82, a cylinder 83, a connecting pipe 84, a piston rod 1 85, a piston rod 2 86 and an elastic member 2 87. The front and rear sides of the lower part of the shell 2 are slidably connected with baffles 81, and the front baffle 81 is connected to the expansion plate 82. The expansion plate 82 is located at the moving track of the screen frame 62 so that the screen frame 62 can contact the expansion plate 82 when moving and push the expansion plate 82 to move forward. The lower parts of the front and rear sides of the shell 2 are connected to the cylinder 83, and a partition is provided between the cylinder 83 to divide the interior of the cylinder 83 into a front and a rear. The rear two liquid chambers, the front liquid chamber is slidingly and sealedly connected to a piston rod 1 85, the piston rod 1 85 is connected to the front baffle 81, the rear liquid chamber is slidingly and sealedly connected to a piston rod 2 86, the piston rod 2 86 is connected to the rear baffle 81, a connecting pipe 84 is connected between the liquid storage chamber on the front side of the cylinder body 83 and the liquid storage chamber on the rear side, the liquid storage chamber on the front side of the piston rod 1 85, the connecting pipe 84 and the liquid storage chamber on the front side of the piston rod 2 86 are all filled with liquid, an elastic part 2 87 is connected between the piston rod 2 86 and the cylinder body 83, the elastic part 2 87 is a reset spring.

[0039] After the ore is crushed, it will fall on the baffle 81 and be blocked by the baffle 81. When the screen frame 62 moves forward, it can contact the expansion plate 82 and push the expansion plate 82 forward. When the expansion plate 82 moves forward, it can pull the front baffle 81 forward. When the front baffle 81 moves, it drives the piston rod 1 85 to move. When the piston rod 1 85 moves, it can squeeze the liquid in the front liquid storage chamber of the cylinder body 83, thereby squeezing the liquid in the front liquid storage chamber of the cylinder body 83 through the connecting pipe 84 to the rear liquid storage chamber of the cylinder body 83 to push the piston rod 2 86 to move backward. The elastic member 2 87 is compressed, so that the rear baffle 81 also moves backward, so that the front and rear baffles 81 are continuously opened and closed to drop materials, so as to achieve the effect of intermittent dropping of materials, thereby avoiding too much ore falling in at one time to affect the screening.

[0040] like Figure 13-15As shown, it also includes a toggle mechanism, which includes a drive rack 91, a drive gear 92, a movable frame 93, a toggle frame 931, an elastic member 932 and a reciprocating screw 94. The right side of the discharge hopper 5 is connected to the drive rack 91, and the lower front part of the screen frame 62 is rotatably connected to the reciprocating screw 94. The right side of the reciprocating screw 94 is connected to the drive gear 92 through a one-way clutch. The drive rack 91 is located at the moving track of the drive gear 92 so that the drive gear 92 can move and engage with the drive rack 91. The reciprocating screw 94 is connected to the drive rack 91 through a one-way clutch. A movable frame 93 is threadedly connected, and the movable frame 93 is slidingly connected to the screen frame 62. A toggle frame 931 is slidingly connected to the movable frame 93. The front and rear sides of the movable upper part of the toggle frame 931 are both inclined. The upper part of the toggle frame 931 extends into the mesh of the screen frame 62 so that the toggle frame 931 can toggle the mesh of the screen frame 62 when it moves, thereby preventing ore from being stuck in the mesh position of the screen frame 62. A plurality of elastic members 932 are evenly spaced and connected between the toggle frame 931 and the movable frame 93. The elastic member 932 is a buffer spring.

[0041] When the screen frame 62 moves back and forth, it can drive the driving gear 92 to move forward. When moving forward, the driving gear 92 can mesh with the driving rack 91 and be poked and rotated by the driven rack 91. At this time, the driving gear 92 can drive the reciprocating screw 94 to rotate, and when the driving gear 92 moves backward, it meshes with the driving rack 91. At this time, the driving gear 92 rotates and the reciprocating screw 94 will not rotate under the action of the one-way clutch. When the reciprocating screw 94 rotates, it can drive the movable frame 93 to move back and forth through the thread. When the movable frame 93 moves, it can drive the toggle frame 931 to move, thereby toggling the mesh position of the screen frame 62 to prevent the mesh from being blocked by ore, and the elastic member three 932 can play a buffering role.

[0042] like Figure 16 As shown, a baffle plate 10 is also included. The baffle plate 10 is connected to the rear side of the shell 2. The baffle plate 10 is used to block the ore in the crushing process to prevent the crushed ore from splashing through the feed port. There is a distance between the baffle plate 10 and the feed port to ensure that after the swing plate 74 swings, the ore in the holding frame can fall into the shell 2 through the distance between the baffle plate 10 and the feed port.

[0043] like Figure 1 As shown, a cover 11 is also included. The cover 11 is rotatably connected to the front side of the upper portion of the shell 2, and the cover 11 is used to block the feeding port.

[0044] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications may be made to the present invention without departing from the principles and spirit of the invention as defined in the claims. Therefore, the detailed description of the disclosed embodiments is intended to be illustrative only and not to limit the present invention, which is to be defined by the claims.

Claims

1. A reciprocating screening ore crushing device, characterized by: The invention comprises a frame (1), a shell (2), a crushing wheel shaft (3), a driving motor (41), a gearbox (42), a discharge hopper (5), a screening mechanism and a reciprocating crushing mechanism, wherein the upper portion of the frame (1) is connected to the shell (2), the shell (2) is provided with a feeding port for adding ore and a feeding port for allowing incompletely crushed ore to enter, the bottom of the shell (2) is provided with a discharge port, the front and rear sides of the lower portion of the shell (2) are rotatably connected to the crushing wheel shaft (3), the shell (2) is provided with a driving motor (41) and a gearbox (42), the gearbox (42) is provided with two output shafts, the two output shafts of the gearbox (42) are respectively connected to the two crushing wheel shafts (3), the input shaft of the gearbox (42) is connected to the output shaft of the driving motor (41), the lower portion of the frame (1) is connected to the discharge hopper (5), the discharge hopper (5) is located below the shell (2), and the frame (1) is provided with a screening mechanism for screening ore and a reciprocating crushing mechanism.

2. A reciprocating screening ore crushing device according to claim 1, characterized in that: The screening mechanism includes a swing arm (61), a screen frame (62), a connecting rod (63), an intermittent gear (64) and a transmission gear 1 (65). Two swing arms (61) are rotatably connected to both sides of the lower part of the shell (2). A screen frame (62) for screening the crushed ore is hingedly connected between the bottoms of the four swing arms (61). The screen frame (62) is arranged to be higher in the front and lower in the back. The screen frame (62) is located between the discharge hopper (5) and the shell (2). A transmission gear 1 (65) is rotatably connected to the shell (2). The transmission gear 1 (65) is connected to a connecting rod (63). The end of the connecting rod (63) is slidably connected to the screen frame (62). The two crushing wheel shafts (3) are both connected to an intermittent gear (64). The intermittent gear (64) can be engaged with the transmission gear 1 (65) when it rotates.

3. A reciprocating screening ore crushing device according to claim 2, characterized in that: The teeth on the two intermittent gears (64) are staggered. When the front intermittent gear (64) rotates to mesh with the transmission gear 1 (65), the rear intermittent gear (64) is disengaged from the transmission gear 1 (65). When the rear intermittent gear (64) rotates to mesh with the transmission gear 1 (65), the front intermittent gear (64) is disengaged from the transmission gear 1 (65).

4. A reciprocating screening ore crushing device according to claim 3, characterized in that: The reciprocating crushing mechanism includes a connecting frame (71), a servo motor (711), a chain transmission group (72), a connecting plate (73), a swing plate (74), an elastic shielding curtain (75), a connecting rack (76), a second transmission gear (77) and an elastic member (78). Two connecting frames (71) are connected to both sides of the frame (1). A chain transmission group (72) is installed between the two connecting frames (71) on both sides. The transmission shafts of the two chain transmission groups (72) are connected. A servo motor (711) is installed on one of the connecting frames (71). The output shaft of the servo motor (711) is connected to the transmission shaft of the chain transmission group (72). A plurality of connecting plates (73) are evenly spaced and connected to the two chain transmission groups (72). The connecting plates (73) are hinged. A swing plate (74) is connected, and an elastic shielding curtain (75) is connected between the swing plate (74) and the connecting plate (73). The swing plate (74), the connecting plate (73) and the elastic shielding curtain (75) constitute a holding frame. An elastic member (78) is connected between the swing plate (74) and the connecting plate (73). The chain transmission group (72) can rotate the opening position of the holding frame to the lower rear side of the screen frame (62). A connecting shaft is provided at the position where the swing plate (74) and the connecting plate (73) are connected. The left and right sides of the connecting shaft of the swing plate (74) are connected to the transmission gear (77). The two connecting racks (76) are connected to the two connecting frames (71). The two connecting racks (76) are respectively located at the moving tracks of the two transmission gears (77).

5. The reciprocating screening ore crushing device according to claim 1, characterized in that: The invention also includes a spacer feeding mechanism, which includes a baffle (81), an expansion plate (82), a cylinder (83), a connecting pipe (84), a piston rod 1 (85), a piston rod 2 (86) and an elastic member 2 (87). Both sides of the lower part of the shell (2) are slidably connected with baffles (81), one of the baffles (81) is connected to an expansion plate (82), and the expansion plate (82) is located at the moving track of the screen frame (62). Both sides of the lower part of the shell (2) are connected to the cylinder (83), and a partition is provided between the cylinder (83), dividing the interior of the cylinder (83) into two liquid chambers. A piston rod 1 (85) is connected to the liquid chamber of one of the piston rods in a sliding and sealing manner, and the piston rod 1 (85) is connected to one of the baffles (81). A piston rod 2 (86) is connected to the liquid chamber on the other side in a sliding and sealing manner, and the piston rod 2 (86) is connected to the other baffle (81). A connecting pipe (84) is connected between the liquid storage chambers on both sides of the cylinder body (83). The liquid storage chamber on the front side of the piston rod 1 (85), the connecting pipe (84) and the liquid storage chamber on the front side of the piston rod 2 (86) are all filled with liquid. An elastic member 2 (87) is connected between the piston rod 2 (86) and the cylinder body (83).

6. A reciprocating screening ore crushing device according to claim 2, characterized in that: The device further comprises a toggle mechanism, wherein the toggle mechanism comprises a driving rack (91), a driving gear (92), a movable frame (93), a toggle frame (931), a third elastic member (932) and a reciprocating screw (94). The unloading hopper (5) is connected to the driving rack (91), the screen frame (62) is rotatably connected to the reciprocating screw (94), the reciprocating screw (94) is connected to the driving gear (92) via a one-way clutch, and the driving rack (91) is located at the moving end of the driving gear (92). At the track, the reciprocating screw rod (94) is connected to a movable frame (93) by a thread, the movable frame (93) is slidably connected to the screen frame (62), and the movable frame (93) is slidably connected to a toggle frame (931), both sides of the movable upper part of the toggle frame (931) are inclined, and the upper part of the toggle frame (931) extends into the mesh of the screen frame (62), and a plurality of elastic members (932) are evenly spaced and connected between the toggle frame (931) and the movable frame (93).

7. The reciprocating screening ore crushing device according to claim 1, characterized in that: It also includes a blocking plate (10), which is connected to the shell (2) and is used to block ore during the crushing process.

8. The reciprocating screening ore crushing device according to claim 1, characterized in that: It also includes a cover (11), and the cover (11) is rotatably connected to the shell (2) and is used to block the feeding port.

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