A device for breaking up stones for road construction

Abstract

This invention discloses a stone crushing device for highway engineering construction, comprising a frame body, on which a first jaw bed and a second jaw bed are arranged opposite to each other, and an eccentric shaft is also provided on the frame body. The second jaw bed is connected to the frame body through the eccentric shaft. The device further includes a fixed jaw unit and a movable jaw unit. The fixed jaw unit includes a first chain drive assembly and multiple fixed jaw rollers arranged on the first jaw bed. The first chain on the first chain drive assembly is composed of multiple first chain plates connected together, and the multiple fixed jaw rollers are arranged on the outer chain plates of the first chain plates, with adjacent fixed jaw rollers being tangent. The movable jaw unit includes a second chain drive assembly and multiple movable jaw rollers arranged on the second jaw bed. The second chain drive assembly is arranged opposite to the first chain drive assembly. The second chain on the second chain drive assembly is composed of multiple second chain plates connected together, and the multiple movable jaw rollers are arranged on the outer chain plates of the second chain plates. Therefore, this invention improves upon the problem of low service life of existing jaw crushers.

Description

Technical Field

[0001] This invention belongs to the field of crusher technology, specifically relating to a stone crushing device for highway engineering construction. Background Technology

[0002] Crushed stone is a commonly used building material in highway construction, mainly used for roadbed paving and concrete mixing. During highway construction, the quarried rock needs to be crushed to produce crushed stone that meets engineering requirements. Jaw crushers are commonly used crushing equipment in highway construction. Jaw crushers produce products with good particle shape and low needle-like and flaky content, which helps improve the quality of concrete and roadbeds.

[0003] The existing jaw crusher mainly consists of the following parts: frame, fixed jaw plate, moving jaw plate, transmission components, etc. The frame of the jaw crusher is a rigid frame with four walls that are open at the top and bottom, used to support the eccentric shaft and bear the reaction force of the crushed material. The moving jaw plate and the fixed jaw plate are respectively composed of the moving jaw plate body and the liner plate set on the side of the moving jaw plate body. The liner plate is fixed to the opposite side of the moving jaw plate body by bolts.

[0004] In the process of crushing rocks, the main wear of the two liners in existing jaw crushers occurs in the middle and lower parts. After crushing, the middle and lower sides of the liners are easily worn and cannot be crushed normally. At this time, the liners need to be replaced. Therefore, the service life of existing jaw crushers is very short. Summary of the Invention

[0005] The purpose of this invention is to provide a stone crushing device for highway engineering construction, which solves the problem of short service life of existing jaw crushers.

[0006] The technical solution adopted in this invention is a stone crushing device for highway engineering construction, comprising a frame body, on which a first jaw bed and a second jaw bed are arranged opposite to each other, and an eccentric shaft is also provided on the frame body, the second jaw bed being connected to the frame body via the eccentric shaft, and further comprising:

[0007] The fixed jaw unit includes a first chain drive assembly and multiple fixed jaw rollers disposed on a first jaw bed. The first chain on the first chain drive assembly is composed of multiple first chain plates connected together. The multiple fixed jaw rollers are disposed on the outer chain plates of the first chain plates, and two adjacent fixed jaw rollers are tangent to each other.

[0008] The movable jaw unit includes a second chain drive assembly and multiple movable jaw rollers disposed on the second jaw bed. The second chain drive assembly is disposed opposite to the first chain drive assembly. The second chain on the second chain drive assembly is composed of multiple second chain plates connected together. The multiple movable jaw rollers are disposed on the outer chain plates of the second chain plates, and two adjacent movable jaw rollers are tangent to each other.

[0009] Furthermore, a first mounting plate is provided on the outer chain plate of the first chain plate, and the fixed jaw roller is rotatably mounted on the first mounting plate via a first rotating shaft. A second mounting plate is provided on the outer chain plate of the second chain plate, and the movable jaw roller is rotatably mounted on the second mounting plate via a second rotating shaft.

[0010] The outer sides of the first and second chain plates are also provided with irregularly shaped gear disks that rotate with the first and second chain plates. The irregularly shaped gear disks are provided with meshing teeth, and transmission components that can drive them to rotate in the opposite direction are provided between the irregularly shaped gear disks and the moving jaw rollers and the fixed jaw rollers.

[0011] The transmission assembly includes a fixed ring disposed on the outer ring of the irregularly shaped gear disk. The fixed ring is fixed to the first jaw bed or the second jaw bed. The fixed ring is respectively provided with a first gear that meshes with the meshing teeth on the gear disk. The ends of the first rotating shaft and the second rotating shaft are both provided with a second gear that meshes with the first gear.

[0012] Multiple bushings are provided on the outer sides of both the moving jaw roller and the fixed jaw roller. The bushings are evenly arranged along the circumference of the moving jaw roller or the fixed jaw roller, and two adjacent bushings are tangent to each other.

[0013] The liner is shaped like a regular hexagonal prism.

[0014] The liner is made of alloy steel.

[0015] The first chain drive assembly includes a first driving sprocket, a first driven sprocket, and a first chain. The first driving sprocket and the first driven sprocket are mounted on the first jaw bed from top to bottom, and the first chain is located outside the first driving sprocket and the first driven sprocket. The second chain drive assembly includes a second driving sprocket, a second driven sprocket, and a second chain. The second driving sprocket and the second driven sprocket are mounted on the second jaw bed from top to bottom, and the second chain is located outside the second driving sprocket and the second driven sprocket.

[0016] Both the first and second drive sprockets are equipped with motors that drive their rotation, and the first and second drive sprockets rotate in opposite directions.

[0017] The beneficial effects of this invention are:

[0018] This invention discloses a stone crushing device for highway construction. An eccentric shaft drives a second chain drive assembly and movable jaw rollers mounted on a second jaw bed to periodically oscillate up and down. When stone is fed into the crushing chamber composed of movable and fixed jaw rollers for crushing, multiple fixed and movable jaw rollers rotate continuously under the action of the first and second chain drive assemblies. During this process, the fixed and movable jaw rollers rotate sequentially to positions that contact the stone, crushing it. As a result, the fixed and movable jaw rollers are cyclically worn during crushing. Replacement is only possible when all movable and fixed jaw rollers show significant wear. Therefore, this invention improves upon the problem of low lifespan in existing jaw crushers. Attached Figure Description

[0019] Figure 1 This is a perspective view of a stone crushing device for highway engineering construction according to the present invention;

[0020] Figure 2 This is a side view of a stone crushing device for highway engineering construction according to the present invention;

[0021] Figure 3 This is a schematic diagram of the transmission component on a stone crushing device used in highway engineering construction according to the present invention.

[0022] In the figure, 1. First jaw bed; 2. Second jaw bed; 3. Fixed jaw roller; 4. Moving jaw roller; 5. Eccentric shaft; 6. Crushing chamber; 7. Liner; 8. Irregular gear disc; 9. Fixed ring; 10. First driving sprocket; 11. First driven sprocket; 12. First chain; 13. First chain plate; 14. Second driving sprocket; 15. Second driven sprocket; 16. Second chain; 17. Second chain plate; 18. First gear; 19. Second gear. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0024] Crushed stone is a commonly used building material in highway construction, mainly used for roadbed paving and concrete mixing. During highway construction, the quarried rock needs to be crushed to produce crushed stone that meets engineering requirements. Jaw crushers are commonly used crushing equipment in highway construction. Jaw crushers produce products with good particle shape and low needle-like and flaky content, which helps improve the quality of concrete and roadbeds.

[0025] The existing jaw crusher mainly consists of the following parts: frame, fixed jaw plate, moving jaw plate, transmission components, etc. The frame of the jaw crusher is a rigid frame with four walls that are open at the top and bottom, used to support the eccentric shaft and bear the reaction force of the crushed material. The moving jaw plate and the fixed jaw plate are respectively composed of the moving jaw plate body and the liner plate set on the side of the moving jaw plate body. The liner plate is fixed to the opposite side of the moving jaw plate body by bolts.

[0026] In the process of crushing rocks, the main wear of the two liners in existing jaw crushers occurs in the middle and lower parts. After crushing, the middle and lower sides of the liners are easily worn and cannot be crushed normally. At this time, the liners need to be replaced. Therefore, the service life of existing jaw crushers is very short.

[0027] This invention discloses a stone crushing device for highway engineering construction, such as... Figures 1-2 As shown, the device includes a frame body, on which a first jaw bed 1 and a second jaw bed 2 are arranged opposite to each other. An eccentric shaft 5 is also provided on the frame body, and the second jaw bed 2 is connected to the frame body through the eccentric shaft 5. The device also includes a fixed jaw unit and a movable jaw unit. The fixed jaw unit includes a first chain drive assembly and multiple fixed jaw rollers 3 arranged on the first jaw bed 1. The first chain 12 on the first chain drive assembly is formed by connecting multiple first chain plates 13. The multiple fixed jaw rollers 3 are arranged on the outer chain plates of the first chain plates 13, and two adjacent fixed jaw rollers 3 are tangent. The movable jaw unit includes a second chain drive assembly and multiple movable jaw rollers 4 arranged on the second jaw bed 2. The second chain drive assembly is arranged opposite to the first chain drive assembly. The second chain 16 on the second chain drive assembly is formed by connecting multiple second chain plates 17. The multiple movable jaw rollers 4 are arranged on the outer chain plates of the second chain plates 17, and two adjacent movable jaw rollers 4 are tangent.

[0028] Furthermore, the first chain drive assembly disclosed in this embodiment includes a first driving sprocket 10, a first driven sprocket 11, and a first chain 12. The first driving sprocket 10 and the first driven sprocket 11 are mounted on the first jaw bed 1 from top to bottom, and the first chain 12 is disposed outside the first driving sprocket 10 and the first driven sprocket 11. The second chain drive assembly includes a second driving sprocket 14, a second driven sprocket 15, and a second chain 16. The second driving sprocket 14 and the second driven sprocket 15 are mounted on the second jaw bed 2 from top to bottom, and the second chain 16 is disposed outside the second driving sprocket 14 and the second driven sprocket 15. Furthermore, both the first driving sprocket 10 and the second driving sprocket 14 are equipped with motors that drive their rotation, and the rotation directions of the first driving sprocket 10 and the second driving sprocket 14 are opposite. Both the first drive sprocket 10 and the second drive sprocket 14 slide in the direction the stone falls downwards. When the first drive sprocket 10 and the second drive sprocket 14 drive multiple fixed jaw rollers 3 and multiple movable jaw rollers 4 to rotate, the multiple fixed jaw rollers 3 and multiple movable jaw rollers 4 can simultaneously pull the stone down and crush it. The sliding of both the first drive sprocket 10 and the second drive sprocket 14 in the direction the stone falls downwards is to prevent stone backflow during the crushing process. In the position shown in the diagram, the first drive sprocket 10 rotates clockwise and the second drive sprocket 14 rotates counterclockwise, ensuring normal crushing.

[0029] The stone crushing device for highway construction disclosed in this invention, when in operation, is driven by an eccentric shaft 5 to periodically swing up and down a second chain drive assembly and a movable jaw roller 4 mounted on a second jaw bed 2. When the stone is fed into the crushing chamber 6 composed of the movable jaw roller 4 and the fixed jaw roller 3 for crushing, under the action of the first chain drive assembly and the second chain drive assembly, multiple fixed jaw rollers 3 and multiple movable jaw rollers 4 can rotate continuously as the first chain drive assembly and the second chain drive assembly rotate. At this time, multiple fixed jaw rollers 3 and multiple movable jaw rollers 4 rotate sequentially to the position of contact with the stone to crush the stone. During this process, multiple fixed jaw rollers 3 and multiple movable jaw rollers 4 rotate sequentially to the position that can generate compression. Therefore, multiple fixed jaw rollers 3 and multiple movable jaw rollers 4 can be cyclically worn during the crushing process. At this time, they can only be replaced when all movable jaw rollers 4 and fixed jaw rollers 3 show significant wear. Therefore, this invention improves the problem of low lifespan of existing jaw crushers.

[0030] To further improve the service life of the crushing device, a first mounting plate is provided on the outer chain plate of the first chain plate 13 disclosed in this embodiment. The fixed jaw roller 3 is rotatably mounted on the first mounting plate via a first rotating shaft. A second mounting plate is provided on the outer chain plate of the second chain plate 17, and the movable jaw roller 4 is rotatably mounted on the second mounting plate via a second rotating shaft. Therefore, during the crushing process, while the multiple fixed jaw rollers 3 and multiple movable jaw rollers 4 rotate with the first driving sprocket 10 and the second driving sprocket 14, the multiple fixed jaw rollers 3 and multiple movable jaw rollers 4 can also rotate on their own.

[0031] To achieve the rotation of multiple fixed jaw rollers 3 and multiple movable jaw rollers 4, a shaped gear disk 8 is also provided on the outer side of the first chain plate 13 and the second chain plate 17 disclosed in this embodiment. The first drive sprocket 10 and the second drive sprocket 14 are provided with meshing teeth. A transmission assembly capable of driving the shaped gear disk 8 to rotate in the opposite direction is provided between the movable jaw rollers 4 and the fixed jaw rollers 3. Specifically, the transmission assembly includes a fixed ring 9 disposed on the outer ring of the shaped gear disk 8. The fixed ring 9 is fixed to the first jaw bed 1 or the second jaw bed 2. A first gear 18 that meshes with the meshing teeth on the shaped gear disk 8 is provided on the fixed ring 9. A second gear 19 that meshes with the first gear 18 is provided at the end of both the first shaft and the second shaft. Therefore, during crushing, the irregularly shaped gear disk 8, located outside the first drive sprocket 10 and the second drive sprocket 14, rotates along with the first drive sprocket 10 and the second drive sprocket 14. Then, the meshing teeth on the irregularly shaped gear disk 8 drive the first gear 18 to rotate in the opposite direction to the irregularly shaped gear disk 8. Finally, the second gear 19, which meshes with the first gear 18, begins to rotate in the same direction as the irregularly shaped gear disk 8. Therefore, when the first drive sprocket 10 and the second drive sprocket 14 rotate in the direction in which the stone falls, they can simultaneously drive multiple fixed jaw rollers 3 and multiple movable jaw rollers 4 to rotate in the direction in which the stone falls. This ensures that each surface on the fixed jaw roller 3 and multiple movable jaw rollers 4 can play a crushing role during the crushing process, thus effectively improving the service life of each fixed jaw roller 3 or movable jaw roller 4, thereby improving the service life of the entire machine.

[0032] Furthermore, in this embodiment, multiple liners 7 are provided on the outer sides of both the moving jaw roller 4 and the fixed jaw roller 3. These liners 7 are evenly arranged along the circumference of the moving jaw roller 4 or the fixed jaw roller 3, with adjacent liners 7 being tangent. In this arrangement, the crushing liners 7 play the primary crushing role. The multiple liners 7 increase the contact area with the stone, improving both the crushing effect and durability. The tangent arrangement of the multiple liners 7 does not affect the rotation of the moving jaw roller 4 or the fixed jaw roller 3, but ensures that adjacent liners 7 remain tangent during the rotation of the moving jaw roller 4 or the fixed jaw roller 3. This prevents crushed stone from entering between the moving jaw roller 4 or the fixed jaw roller 3 and the first drive sprocket 10 and the second drive sprocket 14, thus preventing the stone from affecting the stable transmission of the entire machine. Furthermore, the liners 7 are hexagonal prisms and are made of alloy steel, ensuring stable transmission of the entire machine and effective crushing of the stone by the liners 7. During rotation, each surface of the liner 7 can be effectively used, which can further improve the durability of the liner 7 and thus extend the life of the entire crushing device.

[0033] In summary, the present invention provides a stone crushing device for highway construction. An eccentric shaft 5 drives a second chain drive assembly and a movable jaw roller 4 mounted on a second jaw bed 2 to periodically oscillate up and down. When stone is fed into a crushing chamber 6 composed of movable jaw rollers 4 and fixed jaw rollers 3 for crushing, under the action of the first and second chain drive assemblies, multiple fixed jaw rollers 3 and multiple movable jaw rollers 4 rotate continuously as the first and second chain drive assemblies rotate. At this time, multiple fixed jaw rollers 3 and multiple movable jaw rollers 4 rotate sequentially to positions that contact the stone and crush it. During this process, multiple fixed jaw rollers 3 and multiple movable jaw rollers 4 rotate sequentially to positions that generate compression. Therefore, during the crushing process, multiple fixed jaw rollers 3 and multiple movable jaw rollers 4 are cyclically worn. Furthermore, because hexagonal liner cylinders 7 are also provided on the outer surfaces of multiple fixed jaw rollers 3 and multiple movable jaw rollers 4, each surface of the liner cylinder 7 can play a crushing role during the rotation of the fixed jaw rollers 3 and multiple movable jaw rollers 4. Therefore, the present invention improves the problem of low lifespan of existing jaw crushers.

[0034] The embodiments described above are merely preferred embodiments of the present invention, and the scope of protection of the present invention is not limited thereto. Any simple changes or equivalent substitutions of the technical solutions that can be obviously obtained by those skilled in the art within the scope of the technology disclosed in the present invention shall fall within the scope of protection of the present invention.

Claims

1. A stone crushing device for highway construction, comprising a frame body, wherein a first jaw bed (1) and a second jaw bed (2) are disposed opposite to each other on the frame body, and an eccentric shaft (5) is also disposed on the frame body, wherein the second jaw bed (2) is connected to the frame body via the eccentric shaft (5), characterized in that, Also includes: The fixed jaw unit includes a first chain drive assembly disposed on a first jaw bed (1) and a plurality of fixed jaw rollers (3), wherein the first chain (12) on the first chain drive assembly is formed by connecting a plurality of first chain plates (13), and the plurality of fixed jaw rollers (3) are disposed on the outer chain plates of the first chain plates (13), and two adjacent fixed jaw rollers (3) are tangent to each other. The moving jaw unit includes a second chain drive assembly and a plurality of moving jaw rollers (4) disposed on a second jaw bed (2). The second chain drive assembly is disposed opposite to the first chain drive assembly. The second chain (16) on the second chain drive assembly is formed by connecting a plurality of second chain plates (17). The plurality of moving jaw rollers (4) are disposed on the outer chain plate of the second chain plate (17), and two adjacent moving jaw rollers (4) are tangent to each other.

2. The stone crushing device for highway engineering construction according to claim 1, characterized in that, The first chain plate (13) has a first mounting plate on its outer chain plate, and the fixed jaw roller (3) is rotatably mounted on the first mounting plate via a first rotating shaft. The second chain plate (17) has a second mounting plate on its outer chain plate, and the movable jaw roller (4) is rotatably mounted on the second mounting plate via a second rotating shaft.

3. A stone crushing device for highway engineering construction according to claim 2, characterized in that, The outer sides of the first chain plate (13) and the second chain plate (17) are also provided with a special-shaped gear disk (8) that rotates with the first chain plate (13) and the second chain plate (17). The special-shaped gear disk (8) is provided with meshing teeth. The special-shaped gear disk (8) is provided with a transmission component that can drive it to rotate in the opposite direction between the moving jaw roller (4) and the fixed jaw roller (3).

4. A stone crushing device for highway engineering construction according to claim 3, characterized in that, The transmission assembly includes a fixing ring (9) disposed on the outer ring of the irregular gear disk (8). The fixing ring (9) is fixed on the first jaw bed (1) or the second jaw bed (2). The fixing ring (9) is respectively provided with a first gear (18) that meshes with the meshing teeth on the irregular gear disk (8). The ends of the first shaft and the second shaft are each provided with a second gear (19) that meshes with the first gear (18).

5. A stone crushing device for highway engineering construction according to claim 2, characterized in that, Multiple bushings (7) are provided on the outer sides of both the moving jaw roller (4) and the fixed jaw roller (3). The multiple bushings (7) are evenly arranged along the circumferential direction of the moving jaw roller (4) or the fixed jaw roller (3), and two adjacent bushings (7) are tangent to each other.

6. A stone crushing device for highway engineering construction according to claim 5, characterized in that, The liner (7) is a regular hexagonal prism.

7. A stone crushing device for highway engineering construction according to claim 5, characterized in that, The liner (7) is made of alloy steel.

8. A stone crushing device for highway construction according to claim 5, characterized in that, The first chain drive assembly includes a first drive sprocket (10), a first driven sprocket (11), and a first chain (12). The first drive sprocket (10) and the first driven sprocket (11) are mounted on the first jaw bed (1) from top to bottom. The first chain (12) is located on the outside of the first drive sprocket (10) and the first driven sprocket (11). The second chain drive assembly includes a second drive sprocket (14), a second driven sprocket (15), and a second chain (16). The second drive sprocket (14) and the second driven sprocket (15) are mounted on the second jaw bed (2) from top to bottom. The second chain (16) is located on the outside of the second drive sprocket (14) and the second driven sprocket (15).

9. A stone crushing device for highway engineering construction according to claim 8, characterized in that, The first drive sprocket (10) and the second drive sprocket (14) are each equipped with a motor that drives them to rotate, and the first drive sprocket (10) and the second drive sprocket (14) rotate in opposite directions.

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