Crawler-type mobile heavy screening station

Abstract

The utility model provides a crawler-type mobile heavy screening station which comprises a rack, a crawler walking assembly, a screening device, a feeding device, a conveying device and a power assembly, the rack comprises a rack main body and a supporting frame, the crawler walking assembly is arranged at the bottom of the rack main body, the supporting frame is installed on the rack main body, the screening device is installed on the supporting frame, and the conveying device is installed on the rack main body. One end of the supporting frame is hinged to the machine frame body, the other end of the supporting frame is connected to the machine frame body through the first adjusting device, and the first adjusting device can stretch out and draw back to drive the supporting frame to rotate around the machine frame body so as to achieve switching between the conveying state and the working state of the screening device. The feeding device is used for feeding materials, the screening device is used for screening the materials from the feeding device, the conveying device is used for conveying the screened materials to a designated position, tensioning devices are arranged on the two sides of the screening device and used for tensioning a screen of the screening device, and the power assembly is in transmission connection with the crawler walking assembly, the screening device and the feeding device.

Description

Technical Field

[0001] The utility model relates to screening equipment, in particular to a crawler-type mobile heavy-duty screening station. Background Art

[0002] Sand and gravel aggregates are the most widely used and indispensable basic raw materials in my country. In recent years, with the adjustment of national policies and the steady increase in market demand, their prices have increased rapidly. The huge market demand for sand and gravel has given rise to strong demand for production equipment.

[0003] Traditional fixed sand and gravel production lines have long construction lead times, high investment costs, demanding site requirements, low intelligence, and a lack of rapid transitions or small-site operation. Existing crawler mobile screening stations typically crush large materials before screening. However, for applications requiring only large materials to be screened, such as mining and quarrying, construction and demolition waste, gravel, and topsoil, adding a crushing step inevitably increases costs and compromises the material size. Utility Model Content

[0004] The purpose of the utility model is to provide a crawler-type mobile heavy-duty screening station to solve the problem of single material screening size.

[0005] The utility model provides a crawler-type mobile heavy-duty screening station, comprising a frame, a crawler walking assembly, a screening device, a feeding device, a conveying device and a power assembly, the frame comprising a frame body and a support frame, the bottom of the frame body is provided with the crawler walking assembly, the support frame is installed on the frame body, the screening device is installed on the support frame, one end of the support frame is hinged to the frame body, and the other end is connected to the frame body through a first adjusting device, the first adjusting device can be extended and retracted to drive the support frame to rotate around the frame body to realize the conversion of the screening device between the transport state and the working state, the feeding device is installed on the frame body, and the feeding device has a first The feeding port and the first feeding port are provided, and the screening device has a second feeding port, a second feeding port, a third feeding port and a fourth feeding port. The first feeding port is used to receive materials, and the first feeding port is connected with the second feeding port. The screening device is used to screen the materials from the feeding device, and the materials screened by the screening device fall from the second feeding port, the third feeding port and the fourth feeding port to the conveying device respectively. The conveying device is used to transport the screened materials to a designated position. Tensioning devices are provided on both sides of the screening device, and the tensioning devices are used to tension the screen of the screening device. The power assembly is connected to the crawler walking assembly, the screening device and the feeding device through transmission.

[0006] In one embodiment of the present invention, the tensioning device includes a tensioning frame, a tensioning seat and a tensioning plate. The tensioning frame is relatively fixedly connected to the screening device, the tensioning seat is fixedly connected to the tensioning plate, the tensioning plate is fixedly connected to the screen, and the tensioning seat is movably connected to the screening device to move closer to or away from the tensioning frame.

[0007] In one embodiment of the present utility model, the conveying device includes a first conveyor, a second conveyor and a third conveyor, the first conveyor is hinged to the frame body, the feed end of the first conveyor is connected to the second discharge port, the discharge end of the first conveyor extends upward from the second discharge port to one end of the frame body, the second conveyor and the third conveyor are respectively installed on both sides of the frame body, the feed end of the second conveyor is connected to the third discharge port, the discharge end of the second conveyor extends upward from the third discharge port, and the feed end of the third conveyor is connected to the fourth discharge port.

[0008] In one embodiment of the present invention, the conveying device also includes a transfer conveyor, which is fixedly connected to the frame body and located at the bottom of the frame body. The feed end of the transfer conveyor receives the material from the fourth discharge port, and the discharge end of the transfer conveyor is connected to the feed end of the third conveyor. The transfer conveyor and the third conveyor transport the material from the fourth discharge port to the designated location.

[0009] In one embodiment of the present invention, the crawler-type mobile heavy-duty screening station also includes a first driving member, which is fixedly mounted on the frame body, and a driving end of the first driving member is fixedly connected to the first conveyor, and the driving end of the first driving member can be extended and retracted to adjust the angle between the first conveyor and the horizontal plane.

[0010] In one embodiment of the present invention, the second conveyor is provided with a first articulated arm assembly that can be straightened or bent, and when the first articulated arm assembly is straightened, the discharge end of the second conveyor extends outward from one side of the frame body, and when the first articulated arm assembly is bent, the discharge end of the second conveyor can bypass the top of the frame body and be located on the other side of the frame body; the third conveyor is provided with a second articulated arm assembly that can be straightened or bent, and when the second articulated arm assembly is straightened, the discharge end of the third conveyor extends outward from the other side of the frame body, and when the second articulated arm is bent, the discharge end of the third conveyor can bypass the top of the frame body and be located on one side of the frame body.

[0011] In an embodiment of the present invention, four supporting points are provided on the supporting frame, and elastic buffer members are installed on the four supporting points and connected to the screening device.

[0012] In one embodiment of the present invention, the feeding device can be raised and lowered between an ascending position and a descending position. When the feeding device is in the ascending position, the first discharge port is above the second inlet port, and the height of the first inlet port is lower than the height of the first discharge port. When the feeding device is in the descending position, the feeding device can be moved to the outside of one end of the frame body, and the overall height of the feeding device is lowered, and the first discharge port is away from the second inlet port.

[0013] In one embodiment of the present invention, the screening device is provided with a first screen and a second screen, the first screen is opposite to the second inlet, and one end of the first screen extends to the second outlet, the second screen is located below the first screen, the second screen is opposite to the fourth outlet, and one end of the second screen extends to the third outlet.

[0014] In one embodiment of the present utility model, the crawler-type mobile heavy-duty screening station also includes an electrical system and a maintenance walking platform. The electrical system is fixedly mounted on the frame body and is located between the feeding device and the frame body. The electrical system is routed along the inner side of the frame body to the various electrical appliances. The maintenance walking platform is provided on both sides of the screening device for operators to perform maintenance and inspection.

[0015] In the crawler-type mobile heavy-duty screening station of the present invention, the screening device has multiple discharge ports, including a second discharge port, a third discharge port and a fourth discharge port, which are suitable for grading most heavy materials. It is not limited to the intermediate and fine screening of sand and gravel materials, and can screen large-sized sand and gravel raw materials with diversified uses. A tensioning device is provided, and a variety of screens can be installed to cope with sand and gravel raw materials of different specifications, and the operation is convenient. The angle between the screening device and the horizontal plane is adjusted by the first adjusting device, which can increase the space for screen operation and reduce the difficulty of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a first-perspective structural diagram of a crawler-type mobile heavy-duty screening station in working state according to one embodiment of the present invention.

[0017] Figure 2 for Figure 1 The front view of the crawler-type mobile heavy-duty screening station is shown.

[0018] Figure 3 for Figure 1 The top view of the crawler-type mobile heavy-duty screening station is shown.

[0019] Figure 4 This is a second perspective structural schematic diagram of a crawler-type mobile heavy-duty screening station in working state according to one embodiment of the utility model.

[0020] Figure 5 for Figure 1 The diagram shows the structure of the tensioning device of the crawler-type mobile heavy-duty screening station.

[0021] Figure 6 This is a structural schematic diagram of a crawler-type mobile heavy-duty screening station in a transport state according to an embodiment of the present invention.

[0022] Figure 7 This is a structural schematic diagram of a crawler-type mobile heavy-duty screening station in an inspection state according to an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] The utility model provides a crawler-type mobile heavy-duty screening station, such as Figure 1-4As shown, one embodiment of a crawler-type mobile heavy-duty screening station includes a frame 11, a crawler travel assembly 12, a screening device 13, a feeding device 14, a conveying device 15, and a power assembly 16. The frame 11 includes a frame body 111 and a support frame 112. The crawler travel assembly 12 is provided at the bottom of the frame body 111, and the support frame 112 is mounted on the frame body 111. The screening device 13 is mounted on the support frame 112. One end of the support frame 112 is hinged to the frame body 111, and the other end is connected to the frame body 111 via a first adjustment device 17. The first adjustment device 17 is retractable, thereby driving the support frame 112 to rotate about the frame body 111 to switch the screening device 13 between a transport state and an operating state. It will be understood that the screening device 13 is tilted, that is, it is arranged at an angle with the horizontal plane. As the screening device 13 switches between the transport state and the operating state, the angle between the horizontal plane and the screening device 13 also changes. The first adjusting device 17 can adjust the angle in the range of 12° to 19°. Those skilled in the art can adjust the angle to 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19°, etc. according to actual conditions, and this is not a sole limitation. The feeding device 14 is mounted on the frame body 111. The feeding device 14 has a first feed port and a first discharge port. The screening device 13 has a second feed port, a second discharge port, a third discharge port, and a fourth discharge port. The first feed port is used to receive material, and the first discharge port is connected to the second feed port. The screening device 13 is used to screen the material from the feeding device 14. The material screened by the screening device 13 falls from the second discharge port, the third discharge port, and the fourth discharge port to the conveying device 15 respectively. The conveyor 15 is used to transport the screened material to a designated location. Tensioning devices 18 are installed on both sides of the screening device 13 to tighten the screen of the screening device 13, improving the installation efficiency of the screen replacement. The power assembly 16 is connected to the crawler track assembly 12, the screening device 13, and the feeding device 14.

[0025] Specifically, the frame body 111 includes two parallel, spaced-apart mounting plates, which are relatively fixedly connected by multiple crossbeams. The upper surfaces of the two mounting plates together constitute the load-bearing surface of the frame body 111. The crawler tracks of the crawler travel assembly 12 are fixedly mounted to the mounting plates using steel structural bolts and locating pins, maintaining a relatively fixed connection to the frame body 111. It should be noted that the connection between the crawler travel assembly 12 and the frame body 111 can also be a welded connection.

[0026] In the crawler-type mobile heavy-duty screening station of the present invention, the screening device 13 has multiple discharge ports, including a second discharge port, a third discharge port and a fourth discharge port, which is suitable for grading most heavy materials. It is not limited to the intermediate and fine screening of sand and gravel materials, and can screen large-sized sand and gravel raw materials with diversified uses. A tensioning device 18 is provided, and a variety of screens can be installed to cope with sand and gravel raw materials of different specifications, and the operation is convenient. The angle between the screening device 13 and the horizontal plane is adjusted by the first adjusting device 17, which can increase the space for screen operation and reduce the difficulty of maintenance.

[0027] In this embodiment, the support frame 112 is provided with four support points, each of which is equipped with elastic buffers 21 connected to the screening device 13. Specifically, the elastic buffers 21 can be springs. The screening device 13 generates strong vibrations during operation, and the springs effectively absorb these impacts, reducing damage to the screen body and supporting structure. The springs' cushioning effect can extend the service life of the screening device 13 and reduce maintenance costs.

[0028] In this embodiment, the screening device 13 is positioned above the center of gravity of the entire machine, ensuring a stable and reliable operation and smooth transport of the entire machine. The screening device 13 is driven by a hydraulic motor, which, compared to traditional electric motors, effectively reduces overloads caused by the impact of large-scale materials, allowing the screening device 13 to maintain stable operation even when screening large-scale materials.

[0029] In this embodiment, the conveying device 15 includes a first conveyor 151, a second conveyor 152, a third conveyor 153 and a transfer conveyor 154. The first conveyor 151 is hinged to the frame body 111, and the feed end of the first conveyor 151 is connected to the second discharge port, for receiving the material screened from the second discharge port. The discharge end of the first conveyor 151 extends upward from the second discharge port to one end of the frame body 111. The second conveyor 152 and the third conveyor 153 are respectively hinged to the frame body 111 and are located on both sides of the frame body 111. The feed end of the second conveyor 152 is connected to the third discharge port, for receiving the material screened from the third discharge port. The discharge end of the second conveyor 152 extends upward from the third discharge port. The transfer conveyor 154 is fixedly connected to the frame body 111 and is located at the bottom of the frame body 111. The feed end of the transfer conveyor 154 receives materials from the fourth discharge port, and the discharge end of the transfer conveyor 154 is connected to the feed end of the third conveyor 153. The transfer conveyor 154 and the third conveyor 153 transport the materials from the fourth discharge port to the designated location.

[0030] Specifically, the first conveyor 151 forms the front end of the entire machine, the second conveyor 152 is located on the left side of the frame body 111, and the third conveyor 153 is located on the right side of the frame body 111. Both the second conveyor 152 and the third conveyor 153 are rotatably connected to the frame body. Material is fed through the feeding device 14 and screened by the screening device 13. The first conveyor 151 forms a first type of finished product pile. The second conveyor 152 transports material from the third discharge port of the screening device 13 to form a second type of finished product pile. The third conveyor 153 is located at the discharge end of the transfer conveyor 154 and transports material from the fourth discharge port of the screening device 13 to form a third type of finished product pile.

[0031] In this embodiment, the first conveyor 151, the second conveyor 152, the third conveyor 153, and the transfer conveyor 154 are all equipped with internal buffers to cushion the impact of falling large-sized materials, accommodating the screening of materials of various specifications. Furthermore, the conveyor belts of the first conveyor 151, the second conveyor 152, the third conveyor 153, and the transfer conveyor 154 are equipped with anti-slip strips to effectively reduce the impact of rolling back large-sized materials on the equipment.

[0032] In this embodiment, the screening device 13 is two-layer. Specifically, the screening device 13 is provided with a first screen and a second screen. The first screen is opposite to the second feed port, and one end of the first screen extends to the second discharge port. The second screen is located below the first screen, and the second screen is opposite to the fourth discharge port, and one end of the second screen extends to the third discharge port. The screening device 13 has one feed port (second feed port) and three discharge ports (second discharge port, third discharge port and fourth discharge port). A wear-resistant lining is laid at the second feed port to reduce wear and extend the service life of the equipment. The first layer discharge port (second discharge port) in the screening device 13 is provided with a first conveyor 151, the second layer discharge port (second discharge port) is provided with a second conveyor 152, and the third layer discharge port (third discharge port) is provided with a transfer conveyor 154.

[0033] In this embodiment, Figure 5As shown, tensioning devices 18 are provided on both sides of the screening device 13. Tensioning devices 18 include a tensioning frame 181, a tensioning seat 182, and a tensioning plate 183. Tensioning frame 181 is relatively fixedly connected to the screening device 13, tensioning seat 182 is fixedly connected to tensioning plate 183, tensioning plate 183 is fixedly connected to the first screen / second screen, and tensioning seat 182 is movably connected to the screening device 13 to move closer to or away from tensioning frame 181. Specifically, tensioning seat 182 and tensioning frame 181 are connected by a shaft and sleeve, enabling relative movement between tensioning frame 181 and tensioning seat 182. Tensioning plate 183 and tensioning seat 182 are secured by bolts and nuts. Taking the installation of the first screen as an example, when installing the first screen, the two ends of the first screen are hooked on the tensioning plate 183. The first screen is at both ends in the length direction of the frame body 111. One end of the first screen is fixed, and the tensioning seat 182 at the other end of the first screen moves along the shaft sleeve toward the tensioning frame 181, so that the first screen is stretched and tightened to achieve the effect of tensioning the screen. It should be noted that in the process of installing the screen, tensioning devices 18 are installed on both sides of the screen. The tensioning devices 18 act on the screen on both sides of the screen, so that the screen is evenly stressed during the tensioning process. Those skilled in the art can set the number of tensioning devices 18 according to actual conditions, such as 4, 6, 8, etc., and this is not a sole limitation.

[0034] In this embodiment, the crawler-type mobile heavy-duty screening station also includes a first drive member 19, which is fixedly mounted to the frame body 111. The driving end of the first drive member 19 is fixedly connected to the first conveyor 151. The driving end of the first drive member 19 can be extended and retracted to adjust the angle between the first conveyor 151 and the horizontal plane. During use, this angle can be adjusted from 18° to 24° to meet the stacking height requirements of materials of different specifications. Different angles between the first conveyor 151 and the horizontal plane result in different projected lengths of the first conveyor 151 on the horizontal plane, and the locations to which the first conveyor 151 can transport materials also vary. It should be noted that those skilled in the art can adjust the angle between the first conveyor 151 and the horizontal plane according to actual conditions. The adjustable angle can be 18°, 19°, 20°, 21°, 22°, 23°, 24°, etc., and this is not a single limitation.

[0035] Specifically, the first driving member 19 can be an oil cylinder or an air cylinder, and the present embodiment is preferably an oil cylinder. One end of the first driving member 19 is fixedly connected to the frame body 111, and the driving end at the other end is fixedly connected to the first conveyor 151. The first driving member 19 drives the driving end to extend and retract, and the driving end drives the first conveyor 151 to rotate around the frame body 111, so that the first conveyor 151 can realize the conversion between the working state and the transportation state. In the working state, the first driving member 19 drives the driving end to extend and drive the first conveyor 151 to rotate, and the angle between the first conveyor 151 and the horizontal plane becomes smaller; in the transportation state, the first driving member 19 drives the driving end to retract and drive the first conveyor 151 to rotate, and the angle between the first conveyor 151 and the horizontal plane becomes larger, and the space occupied in the length direction of the whole machine is reduced, which is convenient for transportation and transfer.

[0036] In this embodiment, the second conveyor 152 is provided with a first articulated arm assembly that can be straightened or bent. When the first articulated arm assembly is straightened, the discharge end of the second conveyor 152 extends outward from one side of the frame body 111. When the first articulated arm assembly is bent, the discharge end of the second conveyor 152 can bypass the top of the frame body 111 and be located on the other side of the frame body 111. The third conveyor 153 is provided with a second articulated arm assembly that can be straightened or bent. When the second articulated arm assembly is straightened, the discharge end of the third conveyor 153 extends outward from the other side of the frame body 111. When the second articulated arm assembly is bent, the discharge end of the third conveyor 153 can bypass the top of the frame body 111 and be located on one side of the frame body 111. The first articulated arm assembly enables the second conveyor 152 to bend twice as a whole, and the second articulated arm assembly enables the third conveyor 153 to bend twice as a whole. The second and third conveyors 152, 153 are both hinged to the sides of the frame body 111 via hydraulic drive elements. It is understood that the second and third conveyors 152, 153 are three-section folding structures. When in transport mode, the second and third conveyors 152, 153 can be quickly folded, making the entire machine compact, easy to move, and taking up little space, allowing for flexible transfers.

[0037] In this embodiment, the feeding device 14 can be raised and lowered between an ascending position and a descending position. When the feeding device 14 is in the ascending position, the first discharge port is located above the second feed port, and the height of the first feed port is lower than the height of the first discharge port. When the feeding device 14 is in the descending position, the feeding device 14 can be moved to the outside of one end of the frame body 111, and the overall height of the feeding device 14 decreases, and the first discharge port is away from the second feed port. Specifically, one end of the feeding device 14 is located on a roller at one end of the frame body 111, and the other end of the feeding device 14 is hinged to the support frame 112 through a pin shaft. Through the roller and the second adjusting device (hydraulic cylinder), the feeding device 14 can be extended and retracted along the length direction of the frame body 111, which is convenient for the transport of the crawler-type mobile heavy-duty screening station and its connection with the second feed port of the screening device 13.

[0038] The feeder 14 utilizes a chain and plate structure, unlike conventional belt conveyor feeders. This reduces wear and tear on the equipment when feeding large-sized materials, enhancing its usability and stability. The feeder 14 is equipped with multiple sets of polyurethane scrapers, which prevent material leakage while cleaning dirt and dust from the chain plates, reducing operational resistance and ensuring stable feeding. Two sets of hydraulic struts are located on the end of the main frame 111 near the feeder 14. When the feeder 14 is operating, the hydraulic struts extend to support the feeder 14, offsetting sedimentation caused by the feeding of large-sized materials and ensuring overall stability.

[0039] In this embodiment, the crawler-type mobile heavy-duty screening station further includes an electrical system 22. The electrical system 22 is fixedly mounted on the frame body 111 and is located between the feeding device 14 and the frame body 111. The electrical system 22 is routed along the inner side of the frame body 111 to various electrical appliances.

[0040] The power assembly 16 and the electrical system 22 are arranged between the feeding device 14 and the frame body 111. The whole machine is hydraulically driven and is used for conveying materials, vibrating screening, chassis crawler walking and cylinder folding. It can be put into use as a single device without the need for an external power supply or engine unit, with low investment and high return.

[0041] In this embodiment, the crawler-type mobile heavy-duty screening station further includes a maintenance walking platform 23. The maintenance walking platform 23 is provided on both sides of the screening device 13 for operators to perform maintenance and inspection on the screening device 13.

[0042] Next, the working principle of the crawler-type folding mobile screening station in this embodiment is further explained so that those skilled in the art can better understand the technical solution.

[0043] The crawler type mobile heavy duty screening station has two states, one is working state and the other is transporting state. Since the working place of the crawler type mobile heavy duty screening station is usually far away from the urban area, it needs to be transported on the road by a trailer during transportation. During transportation, the crawler type mobile heavy duty screening station needs to be folded to reduce its volume. Figure 6 As shown, when the crawler-type mobile heavy-duty screening station is folded, the feeding device 14 is in a lowered position to reduce the height of the rear end of the crawler-type mobile heavy-duty screening station, and the second conveyor 152 and the third conveyor 153 can be folded multiple times and wound from the top of the frame body 111 to the side of the frame body 111 to reduce the width and height on both sides of the screening machine. Therefore, the overall volume of the crawler-type mobile heavy-duty screening station after folding is small, which is convenient for transportation; when in working state, the feeding device 14 is in an ascending position, the second conveyor 152 and the third conveyor 153 are opened to both sides, and the front end height of the feeding device 14 is higher than the rear end height to facilitate loading by the loader.

[0044] like Figure 6 As shown, in the transport state, the second conveyor 152 is rotated around the frame body 111 by a hydraulic motor until it is close to the frame body 111, and then the second conveyor 152 is folded twice by the first articulated arm assembly and placed on the belt support frame 113, and the belt support frame 113 is fixedly connected to the frame body 111. The third conveyor 153 is rotated around the frame body 111 by a hydraulic motor until it is close to the frame body 111, and then the third conveyor 153 is folded twice by the second articulated arm assembly to the middle connection between the screening device 13 and the feeding device 14. The middle part and the discharge end of the second conveyor 152 and the third conveyor 153 are both provided with limiting rubber blocks to make the folding operation safer and simpler. The folding action is simple and quick to operate. After folding, the height and height of the entire machine are within the allowable range for transportation, which is convenient for quick transfer and flexible use.

[0045] The crawler-type mobile heavy-duty screening station may need maintenance and repair after working for a period of time, such as Figure 7 As shown, in the maintenance state, the hydraulic cylinder drives the feeding device 14 to push backward along the frame body 111, and the support frame 112 rotates around the frame body 111 through the first adjustment device 17, synchronously driving the screening device 13 to be leveled, that is, the angle between the screening device 13 and the horizontal plane is reduced. This increases the space between the transfer conveyor 154 and the screening device 13, increases the space available for the screen in the screening device 13 to operate, and reduces the difficulty of screen replacement. Maintenance walking platforms 23 are set on both sides of the screening device 13 to facilitate daily maintenance and screen replacement.

[0046] In this embodiment, the crawler-type mobile heavy-duty screening station also includes a lighting alarm auxiliary system, which can issue an alarm to provide prompts when walking and working, making it safer and having a wider range of usage scenarios.

[0047] The crawler-type mobile heavy-duty screening station in this embodiment is more inclined to practicality, economy, functionality and reliability. Since the overall center of gravity deviation between the transport state and the working state is relatively large, the screening device 13 is still above the center of gravity of the whole machine through design and optimization adjustment of various functional components in both states, thereby ensuring that the equipment is more stable and reliable during transportation and work; the crawler-type mobile heavy-duty screening station is suitable for the grading of most heavy materials, and is no longer limited to the intermediate and fine screening of sand and gravel. It can screen large sand and gravel raw materials with a specification of less than 600mm, and has diversified uses; it is fully hydraulically driven, with faster state conversion, flexible transfer, and high site applicability. At the same time, it adds more operating space for daily maintenance and maintenance, reduces the difficulty of maintenance, and reduces downtime.

[0048] In this document, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms based on specific circumstances.

[0049] In this document, the directions or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", and "horizontal" are based on the directions or positional relationships shown in the accompanying drawings and are only for the clarity of the technical solution and the convenience of description. Therefore, they should not be understood as limitations on the present invention.

[0050] As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0051] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A crawler-type mobile heavy-duty screening station, characterized in that: The invention comprises a frame (11), a crawler walking assembly (12), a screening device (13), a feeding device (14), a conveying device (15) and a power assembly (16); the frame (11) comprises a frame body (111) and a support frame (112); the crawler walking assembly (12) is provided at the bottom of the frame body (111); the support frame (112) is installed on the frame body (111); the screening device (13) is installed on the support frame ( 112), one end of the support frame (112) is hinged to the frame body (111), and the other end is connected to the frame body (111) through a first adjusting device (17), and the first adjusting device (17) can be extended and retracted to drive the support frame (112) to rotate around the frame body (111), so as to realize the conversion of the screening device (13) between the transport state and the working state, and the feeding device (14) is installed on the frame body (1 11), the feeding device (14) has a first feed port and a first discharge port, the screening device (13) has a second feed port, a second discharge port, a third discharge port and a fourth discharge port, the first feed port is used to receive materials, the first discharge port is connected to the second feed port, the screening device (13) is used to screen the materials from the feeding device (14), and the materials screened by the screening device (13) fall from the second discharge port, the third discharge port and the fourth discharge port to the conveying device (15), and the conveying device (15) is used to transport the screened materials to a designated location, and tensioning devices (18) are provided on both sides of the screening device (13), and the tensioning devices (18) are used to tension the screen of the screening device (13), and the power assembly (16) is connected to the crawler walking assembly (12), the screening device (13) and the feeding device (14) in a transmission manner.

2. The crawler-type mobile heavy-duty screening station according to claim 1, characterized in that: The tensioning device (18) comprises a tensioning frame (181), a tensioning seat (182) and a tensioning plate (183); the tensioning frame (181) is relatively fixedly connected to the screening device (13); the tensioning seat (182) is fixedly connected to the tensioning plate (183); the tensioning plate (183) is fixedly connected to the screen; and the tensioning seat (182) is movably connected to the screening device (13) to move closer to or farther away from the tensioning frame (181).

3. The crawler-type mobile heavy-duty screening station according to claim 1, characterized in that: The conveying device (15) includes a first conveyor (151), a second conveyor (152) and a third conveyor (153), wherein the first conveyor (151) is hinged to the frame body (111), the feed end of the first conveyor (151) is connected to the second discharge port, the discharge end of the first conveyor (151) extends upward from the second discharge port to one end of the frame body (111), the second conveyor (152) and the third conveyor (153) are respectively installed on both sides of the frame body (111), the feed end of the second conveyor (152) is connected to the third discharge port, the discharge end of the second conveyor (152) extends upward from the third discharge port, and the feed end of the third conveyor (153) is connected to the fourth discharge port.

4. The crawler-type mobile heavy-duty screening station according to claim 3, characterized in that: The conveying device (15) further includes a transfer conveyor (154), which is fixedly connected to the frame body (111) and located at the bottom of the frame body (111). The feed end of the transfer conveyor (154) receives the material from the fourth discharge port, and the discharge end of the transfer conveyor (154) is connected to the feed end of the third conveyor (153). The transfer conveyor (154) and the third conveyor (153) transport the material from the fourth discharge port to a designated location.

5. The crawler-type mobile heavy-duty screening station according to claim 3, characterized in that: The crawler-type mobile heavy-duty screening station also includes a first driving member (19), which is fixedly installed on the frame body (111), and a driving end of the first driving member (19) is fixedly connected to the first conveyor (151), and the driving end of the first driving member (19) can be extended to adjust the angle between the first conveyor (151) and the horizontal plane.

6. The crawler-type mobile heavy-duty screening station according to claim 3, characterized in that: The second conveyor (152) is provided with a first articulated arm assembly that can be straightened or bent. When the first articulated arm assembly is straightened, the discharge end of the second conveyor (152) extends outward from one side of the frame body (111). When the first articulated arm assembly is bent, the discharge end of the second conveyor (152) can bypass the top of the frame body (111) and be located on the other side of the frame body (111); the third conveyor (153) is provided with a second articulated arm assembly that can be straightened or bent. When the second articulated arm assembly is straightened, the discharge end of the third conveyor (153) extends outward from the other side of the frame body (111). When the second articulated arm assembly is bent, the discharge end of the third conveyor (153) can bypass the top of the frame body (111) and be located on one side of the frame body (111).

7. The crawler-type mobile heavy-duty screening station according to claim 1, characterized in that: Four supporting points are provided on the support frame (112), and elastic buffer members (21) are installed on the four supporting points and connected to the screening device (13).

8. The crawler-type mobile heavy-duty screening station according to claim 1, characterized in that: The feeding device (14) can be raised and lowered between an ascending position and a descending position. When the feeding device (14) is in the ascending position, the first discharge port is located above the second inlet port, and the height of the first inlet port is lower than the height of the first discharge port. When the feeding device (14) is in the descending position, the feeding device (14) can be moved to the outside of one end of the frame body (111), and the overall height of the feeding device (14) is lowered, and the first discharge port is away from the second inlet port.

9. The crawler-type mobile heavy-duty screening station according to claim 1, characterized in that: The screening device (13) is provided with a first screen and a second screen, wherein the first screen is opposite to the second feed port, and one end of the first screen extends to the second discharge port, and the second screen is located below the first screen, and the second screen is opposite to the fourth discharge port, and one end of the second screen extends to the third discharge port.

10. The crawler-type mobile heavy-duty screening station according to claim 1, characterized in that: The crawler-type mobile heavy-duty screening station further comprises an electrical system (22) and a maintenance walking platform (23). The electrical system (22) is fixedly mounted on the frame body (111) and is located between the feeding device (14) and the frame body (111). The electrical system (22) is routed along the inner side of the frame body (111) to various electrical appliances. The maintenance walking platform (23) is arranged on both sides of the screening device (13) for operators to perform maintenance and inspection.

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