A crawler-type counterattack mobile crushing and screening station

Abstract

The present invention relates to the field of crushing and screening equipment, and specifically discloses a crawler-type impact mobile crushing and screening station, including: a frame with a crawler wheel set, a vibrating feeder, a feeding hopper, a distribution hopper, a tailing belt, a main conveyor belt, an impact crusher, a return screen, a finished product belt, a return belt, and a power system. The power system of the present invention has a more reasonable power distribution, low energy loss and low use cost; the feeding hopper, the tailing belt, the return belt and the finished product belt can be folded or retracted, so that the device can be greatly folded during transportation, which improves the convenience during transportation; the tailing belt can be switched and installed on any side of the device, so that it has high flexibility and maneuverability; through the distribution hopper, it can switch on three screening paths to obtain a variety of finished materials, and its functions are more comprehensive, and the work efficiency is high and the screening effect is good.

Description

Technical Field

[0001] The invention belongs to the field of crushing and screening equipment, and in particular relates to a crawler-type counterattack mobile crushing and screening station. Background Art

[0002] As a highly efficient crushing and screening equipment, mobile crushing and screening station has the advantages of flexible mobility and high working efficiency. It has been widely used in various quarries, construction demolition waste, mining operations and other operations.

[0003] The principle of mobile crushing and screening station is to pre-screen the material first, and the fine material screened out is used for the finished product. The coarse material screened out enters the crusher for crushing, and then undergoes secondary screening. The fine material is used for the finished product, and the coarse material enters the crusher again for crushing, and then screening, and this reciprocating cycle is repeated to finally obtain all the required finished materials. However, the existing mobile crushing and screening stations have the following problems in terms of power system, folding and contraction, flexibility and functionality:

[0004] In terms of the power system, an engine is usually used to drive the crusher rotor for crushing, and then the end power of the engine is used to drive the generator to generate electricity. The electric energy generated by the generator drives the hydraulic pump motor to provide pressure to the hydraulic system, and the rollers of the conveyor belt are also driven by the hydraulic pump. This power system has many power components, and the energy demand and energy loss are relatively large.

[0005] In terms of folding and shrinking, since the working location of the crushing and screening station is far away from the urban area and is relatively scattered, it needs to be transported by a trailer during the move, so it needs to have good folding and storage properties. The existing crushing and screening station has a low folding and storage degree, and the folding is very inconvenient, especially the side conveyor belt cannot be effectively folded, and needs to be manually dismantled during the move, which is time-consuming and labor-intensive.

[0006] In terms of flexibility, due to the limitation of the size of the work site, when working in the crushing and screening station, it is usually only possible to move on narrow channels, and turning is very inconvenient. The installation position and direction of various components such as the conveyor belt in the existing mobile crushing and screening station are relatively fixed, and the flexibility is not high.

[0007] In terms of functionality, the screening paths of existing mobile crushing and screening stations are relatively simple, and the specifications of the finished products are also relatively simple. If a variety of product specifications are required, the screen and other parts must be replaced or the equipment must be replaced, which is not only costly and inefficient, but also has poor screening effects. Summary of the invention

[0008] The purpose of the present invention is to provide a crawler-type impact mobile crushing and screening station, so as to overcome the defects of the existing mobile crushing and screening station, such as large energy consumption of the power system, low degree of folding and shrinking, poor flexibility, single function, low screening efficiency and poor screening effect.

[0009] To achieve the above-mentioned purpose, the present invention provides a crawler-type impact mobile crushing and screening station, including: a frame, a chassis is provided at the bottom, crawler wheel groups are symmetrically provided on both sides of the chassis, and the frame includes a relative frame front end and a frame rear end; a vibrating feeder, a feeding hopper is provided at one end, the feeding hopper is provided with a feeding hopper inlet, the other end of the feeder is provided with a first coarse material outlet, a first medium material outlet and a first fine material outlet, and the feeder is provided with a first vibrator; a distribution hopper, which includes a distribution hopper inlet, a second fine material outlet and a second medium material outlet, and a conversion device is provided in the distribution hopper, the conversion device can control the distribution hopper inlet to be connected with the first medium material outlet and the first fine material outlet at the same time, or the distribution hopper inlet is connected with the first medium material outlet and the first fine material outlet respectively; a tail belt, which is provided with a tail belt feeding end and a tail belt discharging end, and the tail belt feeding end The tail belt discharging end corresponds to the second fine material outlet, the tail belt discharging end extends outward from either side of the frame, and the tail belt discharging end can be switched between the two sides of the frame, the tail belt discharging end can be folded in either direction toward the front end of the frame or the rear end of the frame and can also be folded toward the side of the frame at the same time, and the tail belt is driven by a first electric roller; a main conveyor belt, which is provided with a main conveyor belt feeding end and a main conveyor belt unloading end, the main conveyor belt feeding end corresponds to the second medium material outlet, the main conveyor belt is driven by a second electric roller, and an iron remover is provided on the main conveyor belt; an impact crusher , which is provided with a crusher inlet and a crusher outlet, the crusher inlet corresponds to the first coarse material outlet, the crusher outlet corresponds to the feeding end of the main conveyor belt, and the impact crusher is provided with a crusher rotor; a return screen, which is arranged at the front end of the frame, the return screen is provided with a return screen inlet, a third coarse material outlet and a finished product outlet, the return screen is provided with a second vibrator, the return screen inlet corresponds to the unloading end of the main conveyor belt; a finished product belt, which is provided with a finished product belt feeding end and a finished product belt unloading end, the finished product belt feeding end corresponds to the finished product outlet, the finished product belt unloading end extends outward from the front end of the frame, and the finished product belt is driven by a third electric The roller is driven; a return belt, which is provided with a return belt feeding end and a return belt unloading end, a transition zone is provided between the return belt feeding end and the third coarse material port, the return belt unloading end extends all the way to the inlet of the feeding hopper, and are interconnected through the return hopper, the return belt is driven by a fourth electric roller, and the transition zone is driven by a fifth electric roller; a power system, which includes an engine, a generator and a hydraulic pump, one end of the engine is connected to the crusher rotor through a hydraulic coupler, the other end of the engine is connected to one end of the generator through a synchronous belt, and the other end of the generator is connected to the output end of the hydraulic pump.

[0010] Preferably, in the above technical solution, the feeding hopper is formed by two or more hopper plates, and each of the hopper plates is turned over by being driven by a first hydraulic cylinder.

[0011] Preferably, in the above technical solution, a second hydraulic cylinder and a third hydraulic cylinder are provided on the tail material belt, the second hydraulic cylinder can drive the tail material belt to fold toward the side of the frame, and the third hydraulic cylinder can drive the tail material belt to fold toward its two sides.

[0012] Preferably, in the above technical solution, the unloading end of the return belt is connected to the side of the frame through a fourth hydraulic cylinder, and the fourth hydraulic cylinder can drive the unloading end of the return belt to rise and fall.

[0013] Preferably, in the above technical solution, a fifth hydraulic cylinder is provided between the finished product belt and the frame, and the fifth hydraulic cylinder can control the extension and retraction of the finished product belt.

[0014] Preferably, in the above technical solution, a crawler travel motor is provided in the crawler wheel assembly, and the hydraulic pump is used to provide power for the crawler travel motor, the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder, the fourth hydraulic cylinder and the fifth hydraulic cylinder.

[0015] Preferably, in the above technical solution, the first vibrator is provided with a first vibration motor, and the second vibrator is provided with a second vibration motor.

[0016] Preferably, in the above technical solution, the generator can provide electric energy for the first vibration motor, the second vibration motor, the first electric roller, the second electric roller, the third electric roller, the fourth electric roller and the fifth electric roller.

[0017] Preferably, in the above technical solution, the vibrating feeder is provided with a layer of pre-screening grid plate and a layer of pre-screening mesh, the pre-screening grid plate and the pre-screening mesh are arranged opposite to each other in the upper and lower parts, one end of the pre-screening grid plate is connected to the first coarse material outlet, and one end of the pre-screening mesh is connected to the first medium material outlet.

[0018] Preferably, in the above technical solution, two or more return screens are provided in the return screen, the head and tail of each return screen are butted against each other and an angle of less than 180 degrees is formed between each return screen.

[0019] Compared with the existing technology, the present invention has the following beneficial effects:

[0020] 1. The power system of the present invention directly drives the crusher rotor to rotate through the engine, and at the same time drives the generator to generate electricity, so that it provides electrical energy for electric components such as electric rollers and vibration motors. The end of the engine directly drives the hydraulic pump to rotate to provide hydraulic pressure for hydraulic parts such as hydraulic cylinders in the device. This power system can provide a power source for the entire screening station by using fewer power devices, with more reasonable power distribution, and greatly reduced energy loss and cost.

[0021] 2. The hopper plate of the feed hopper in the present invention can be retracted, the tail material belt can be folded in two directions, and the return material belt and the finished product belt can be raised and lowered and extended, so that the crushing and screening station as a whole can be folded to a large extent during transportation, and its height and width can be greatly shortened.

[0022] 3. The tail belt in the present invention can be installed on any side of the device as required. When it is working, there is no need to turn. It can work in both the forward direction and the reverse direction, and has a high degree of flexibility.

[0023] 4. The present invention can freely switch the three screening paths through the dividing hopper, so that a variety of finished materials can be obtained at the same time, and its functions are more comprehensive and the working efficiency is high.

[0024] 5. The feeder in the present invention adopts a double-layer screening structure of a grid plate and a screen, and a multi-segment screen is used in the return screen, and there is a certain angle between each screen, which not only improves the screening effect of the material, but also prolongs the service life of the screen and reduces the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural diagram of the crawler-type impact mobile crushing and screening station of the present invention.

[0026] Figure 2 This is a three-dimensional structural diagram of the crawler mobile impact crushing and screening station from another angle.

[0027] Figure 3 This is the main view of the crawler mobile impact crushing and screening station.

[0028] Figure 4 It is a cross-sectional view of a crawler-type impact mobile crushing and screening station.

[0029] Figure 5 It is a structural diagram of the power system.

[0030] Figure 6 It is the workflow diagram of the three screening paths.

[0031] Description of main reference numerals:

[0032] 1-frame, 11-chassis, 12-track wheel set, 13-front end of frame, 14-rear end of frame, 15-crawler travel motor;

[0033] 2-vibrating feeder, 21-feeding hopper, 211-hopper plate, 212-first hydraulic cylinder, 22-feeding hopper inlet, 23-first coarse material outlet, 24-first medium material outlet, 25-first fine material outlet, 26-first vibrator;

[0034] 3-sub-hopper, 31-sub-hopper inlet, 32-second fine material outlet, 33-second medium material outlet;

[0035] 4-tail material belt, 41-tail material belt feeding end, 42-tail material belt discharging end, 43-first electric roller, 44-second hydraulic cylinder, 45-third hydraulic cylinder;

[0036] 5-main conveyor belt, 51-main conveyor belt loading end, 52-main conveyor belt unloading end, 53-second electric roller, 54-iron remover;

[0037] 6- impact crusher, 61- crusher inlet, 62- crusher outlet, 63- crusher rotor;

[0038] 7-return material screen, 71-return material screen inlet, 72-third coarse material inlet, 73-finished product inlet, 74-second vibrator;

[0039] 8- finished product belt, 81- finished product belt feeding end, 82- finished product belt unloading end, 83- third electric roller, 84- fifth hydraulic cylinder;

[0040] 9-returning belt, 91-returning belt loading end, 92-returning belt unloading end, 93-transition belt, 94-returning hopper, 95-fourth electric roller, 96-fourth hydraulic cylinder, 97-fifth electric roller;

[0041] 10-power system, 101-engine, 102-generator, 103-hydraulic pump, 104-hydraulic coupling, 105-synchronous belt. DETAILED DESCRIPTION

[0042] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0043] like Figures 1 to 5As shown, the crawler-type impact mobile crushing and screening station in this embodiment includes: a frame 1, a chassis 11, a crawler wheel set 12, a frame front end 13, a frame rear end 14, a crawler travel motor 15, a vibrating feeder 2, a feeding hopper 21, a hopper plate 211, a first hydraulic cylinder 212, a feeding hopper inlet 22, a first coarse material outlet 23, a first medium material outlet 24, a first fine material outlet 25, a first vibrator 26, a dividing hopper 3, a dividing hopper inlet 31, a second fine material outlet 32, a second medium material outlet 33, a tailing belt 4, a tailing belt feeding end 41, a tailing belt discharging end 42, a first electric roller 43, a second hydraulic cylinder 44, a third hydraulic cylinder 45, a main conveyor belt 5, a main conveyor belt feeding end 51, a main conveyor belt Discharge end 52, second electric roller 53, iron remover 54, impact crusher 6, crusher inlet 61, crusher outlet 62, crusher rotor 63, return screen 7, return screen inlet 71, third coarse material outlet 72, finished product outlet 73, second vibrator 74, finished product belt 8, finished product belt loading end 81, finished product belt unloading end 82, third electric roller 83, fifth hydraulic cylinder 84, return belt 9, return belt loading end 91, return belt unloading end 92, transition belt 93, return hopper 94, fourth electric roller 95, fourth hydraulic cylinder 96, fifth electric roller 97, power system 10, engine 101, generator 102, hydraulic pump 103, hydraulic coupling 104, synchronous belt 105.

[0044] A chassis 11 is installed at the bottom of the frame 1, and track wheel groups 12 are symmetrically installed on both sides of the chassis 11. A crawler travel motor 15 is installed in the track wheel group 12. The frame 1 includes a frame front end 13 and a frame rear end 14 which are located opposite to each other.

[0045] The vibrating feeder 2 is installed on the rear end 14 of the frame, and a feeding hopper 21 is installed at one end thereof. A feeding hopper inlet 22 is provided at the top of the feeding hopper 21. The feeding hopper 21 is surrounded by three hopper plates 211. The bottom of each hopper plate 211 is hinged to the frame 1 and can be flipped between vertical and horizontal positions by the drive of the first hydraulic cylinder 212; a first coarse material outlet 23, a first medium material outlet 24 and a first fine material outlet 25 are provided at the other end of the feeder 2, and a first vibrator 26 is installed on both sides of the feeder 2, and a first vibration motor for generating vibration is installed in the first vibrator 26; a layer of pre-screening grid plate and a layer of pre-screening screen are provided in the vibrating feeder 2, and the pre-screening grid plate and the pre-screening screen are arranged opposite to each other up and down, one end of the pre-screening grid plate is connected to the first coarse material outlet 23, and one end of the pre-screening screen is connected to the first medium material outlet 24.

[0046] A dividing hopper inlet 31 is provided at the top of the dividing hopper 3, and a second fine material outlet 32 ​​and a second medium material outlet 33 are provided at the bottom thereof. The dividing hopper inlet 31 is aligned with the first medium material outlet 24 and the first fine material outlet 25 at the same time. A material switching device is installed in the dividing hopper 3, which can control the dividing hopper inlet 31 to be connected with the second fine material outlet 32 ​​and the second medium material outlet 33 separately, and can also control the dividing hopper inlet 31 to be connected with the second fine material outlet 32 ​​and the second medium material outlet 33 at the same time; it can be switched according to material requirements.

[0047] The tail belt 4 is provided with a tail belt feeding end 41 and a tail belt discharging end 42, the tail belt feeding end 41 corresponds to the second fine material outlet 25, the tail belt discharging end 42 can extend outward from either side of the frame 1, and the tail belt discharging end 42 can be switchably installed on either side of the two sides of the frame 1, and the tail belt discharging end 42 can be folded in either direction of the front end 13 of the frame or the rear end 14 of the frame and can also be folded toward the side of the frame 1 at the same time, a first electric roller 43 is installed in the tail belt 4, and the first electric roller 43 drives its conveyor belt; a second hydraulic cylinder 44 and a third hydraulic cylinder 45 are installed on the tail belt 4, the second hydraulic cylinder 44 can drive the tail belt 4 to fold toward the side of the frame 1, and the third hydraulic cylinder 45 can drive the tail belt 4 to fold toward the front end 13 of the frame or the rear end 14 of the frame.

[0048] The main conveyor belt 5 includes a main conveyor belt loading end 51 and a main conveyor belt unloading end 52. The main conveyor belt loading end 51 corresponds to the second intermediate material outlet 33. A second electric roller 53 is installed on the main conveyor belt 5, and the conveyor belt is driven by the second electric roller 53. A permanent magnetic iron remover 54 is installed above the main conveyor belt 5.

[0049] The impact crusher 6 is provided with a crusher inlet 61 and a crusher outlet 62. The crusher inlet 61 corresponds to the first coarse material outlet 23, and the crusher outlet 62 corresponds to the feeding end 51 of the main conveyor belt. The impact crusher is equipped with a crusher rotor 63, through which the internal rotor is driven to perform crushing.

[0050] The return screen 7 is installed at the front end 13 of the frame, and a return screen inlet 71 is provided on the top of the return screen 7, a third coarse material port 72 is provided on the side, and a finished product port 73 is provided on the bottom. Second vibrators 74 are installed on both sides of the return screen 7, and a second vibration motor capable of providing vibration is installed in the second vibrator 74. The return screen inlet 71 corresponds to the unloading end 52 of the main conveyor belt; two sections of return screens are installed in the return screen 7, and the head and tail of each return screen are butted against each other and there is an angle of less than 180 degrees between each return screen.

[0051] The finished product belt 8 is installed at the front end 13 of the frame, and includes a finished product belt loading end 81 and a finished product belt unloading end 82. The finished product belt loading end 81 corresponds to the finished product port 73, and the finished product belt unloading end 82 extends outward from the front end 13 of the frame. A third electric roller 83 is installed in the finished product belt 8, and the third electric roller 83 drives the finished product belt 8; a fifth hydraulic cylinder 84 is installed between the finished product belt 8 and the frame 1, and the fifth hydraulic cylinder 84 can control the extension and retraction of the finished product belt 8.

[0052] The return belt 9 includes a return belt feeding end 91 and a return belt unloading end 92. A transition belt 93 is installed between the return belt feeding end 91 and the third coarse material port 72. The return belt unloading end 92 extends all the way to the feed hopper inlet 22 and is interconnected through a return hopper 94. A fourth electric roller 95 is installed in the return belt 9, and the return belt 9 can be driven by the fourth electric roller 95. A fifth electric roller 97 is installed in the transition belt 93, and the transition belt 93 can be driven by the fifth electric roller 97. The return belt feeding end 91 is hinged to the side of the frame 1, and the return belt unloading end 92 is connected to the side of the frame 1 through a fourth hydraulic cylinder 96. The fourth hydraulic cylinder 96 can drive the return belt unloading end 92 to rise and fall.

[0053] The power system 1 mainly includes an engine 101, a generator 102 and a hydraulic pump 103; one end of the engine 101 is connected to the crusher rotor 63 through a hydraulic coupler 104, the other end of the engine 101 is connected to one end of the generator 102 through a synchronous belt 105, and the other end of the generator 102 is connected to the output end of the hydraulic pump 103; the hydraulic pump 103 is used to provide power for hydraulic parts such as a crawler travel motor, a first hydraulic cylinder 212, a second hydraulic cylinder 44, a third hydraulic cylinder 45, a fourth hydraulic cylinder 96 and a fifth hydraulic cylinder 84; the generator 102 can provide electrical energy for a first vibration motor, a second vibration motor, a first electric roller 43, a second electric roller 53, a third electric roller 83, a fourth electric roller 95 and a fifth electric roller 97 and other electrical components.

[0054] Next, the working principle of the crawler-type impact mobile crushing and screening station in this embodiment is further explained so that those skilled in the art can better understand the technical solution.

[0055] In terms of the power system, all conveying rollers in the conveyor belts of the present invention are driven by electric rollers (specific models used are: the first electric roller 43 is a 650 mm wide electric roller, the second electric roller 53 is a 1200 mm wide electric roller, the third electric roller 83 is a 1200 mm wide electric roller, the fourth electric roller 95 is a 650 mm wide electric roller, and the fifth electric roller 97 is a 650 mm wide electric roller). One end of the engine 101 directly drives the crusher rotor 63 to rotate through the hydraulic coupler 104, and the other end of the engine 101 drives the generator 101 through the synchronous belt 105. 2 is used to generate electricity, and the electric energy generated by the generator 102 is used to provide electric energy for the first vibration motor, the second vibration motor, all the electric rollers and other electrical components; the tail end of the generator 102 is directly connected to the hydraulic pump 103 through the power take-off port to rotate, so as to provide hydraulic power for the crawler tracking motor and all the hydraulic cylinders; due to the crusher rotor 63, the power required for electric energy and hydraulic energy is reduced in sequence, so the engine 101, the generator 102 and the hydraulic pump 103 are connected in series in sequence according to the power requirement, which not only reduces the cost required for adding additional power sources, but also reduces the energy loss caused by excessive power sources.

[0056] In terms of folding and shrinking, each bucket plate of the feeding hopper 21 can be erected and laid down by a hydraulic cylinder. When working, each bucket plate is in a vertical state to form the feeding hopper 21 for loading. During transportation, each bucket plate is in a horizontal state to reduce the height of the entire equipment for easy transportation; the tail material belt 4 can swing toward the front and rear ends of the device, and can also shrink to fit the two sides of the device to reduce the width of both sides of the device; the finished product belt 8 can be retracted and can be retracted into the device during transportation to shorten the overall length; the end of the return belt 9 and the return hopper 94 can be raised and lowered, rising when the device is in working state and lowering in the transportation state to reduce the overall height of the device.

[0057] In terms of flexibility, the tail strip 4 of the device can change the installation direction as needed, so that its end can extend outward from any side of the two sides of the device, which is more flexible.

[0058] Functional aspects, such as Figure 6 As shown, the device can switch between three screening paths through the dividing hopper 3, thereby obtaining two products; the specific paths are:

[0059] Path one, when there are more fine waste materials such as mud and sand, the hopper inlet 31 is connected with the second fine material outlet 32 ​​and the second medium material outlet 33 at the same time, and the raw materials enter the vibrating feeder 2 to obtain three kinds of materials: coarse, medium and fine; the coarse material obtained by the vibrating feeder 2 enters the impact crusher 6 for crushing, and then falls onto the main conveyor belt 5 and enters the return screen 7, and the qualified materials are discharged from the finished product belt 8, and the coarse materials in the return screen 7 are returned to the impact crusher 6 through the return belt 9 for circulation; the medium material obtained by the vibrating feeder 2 directly falls onto the main conveyor belt 5 and enters the return screen 7, and the qualified materials are discharged from the finished product belt 8, and the coarse materials in the return screen 7 are returned to the impact crusher 6 through the return belt 9 for circulation, and finally the finished products are discharged from the finished product belt 8; the fine materials obtained by the vibrating feeder 2 are mostly fertilizers such as mud and sand, which are discharged through the tailing belt 4.

[0060] Path two, when there are relatively few silt and fine waste materials, the hopper inlet 31 is separately connected to the second medium material outlet 33, and the raw materials enter the vibrating feeder 2 to obtain three types of materials: coarse, medium and fine. The coarse material obtained by the vibrating feeder 2 enters the impact crusher 6 for crushing, and then falls onto the main conveyor belt 5 and enters the return screen 7. Qualified materials are discharged from the finished product belt 8, and the coarse materials in the return screen 7 are returned to the impact crusher 6 through the return belt 9 for circulation. The medium and fine materials obtained by the vibrating feeder 2 directly fall onto the main conveyor belt 5 and enter the return screen 7. Qualified materials are discharged from the finished product belt 8, and the coarse materials in the return screen 7 are returned to the impact crusher 6 through the return belt 9 for circulation, and finally the finished products are discharged from the finished product belt 8.

[0061] Path three, when there is less mud and fine waste, the hopper inlet 31 is connected to the second fine material outlet 33 separately, and the raw material enters the vibrating feeder 2 to obtain three kinds of materials: coarse, medium and fine; the coarse material obtained by the vibrating feeder 2 enters the impact crusher 6 for crushing, and then falls onto the main conveyor belt 5 and enters the return screen 7, and the qualified material is discharged from the finished product belt 8, and the coarse material in the return screen 7 is returned to the impact crusher 6 through the return belt 9 for circulation, and the obtained No. 1 finished product is discharged from the finished product belt 8; the medium material and fine material obtained by the vibrating feeder 2 directly fall into the tailing belt 4 and are discharged, and a No. 2 finished product is obtained, and the coarseness and fineness of the No. 2 finished product is greater than that of the No. 1 finished product.

[0062] Therefore, the device can conveniently switch between multiple screening paths to obtain products of various specifications.

[0063] Two layers of screening meshes are arranged in the vibrating feeder 2, and a multi-stage return screen is arranged in the return screen 7. There is a certain angle between each return screen, which can fully expand the material during the screening process, thereby improving the screening efficiency, reducing the loss rate and maintenance cost of the screen, and improving the screening effect.

[0064] To sum up, the power distribution of the power system of the present invention is more reasonable, and the energy loss and use cost are low; the feed hopper, tail belt, return belt and finished product belt can be folded or contracted, so that the device can be folded to a large extent during transportation, which improves the convenience during transportation; the tail belt can be switched and installed on any side of the device, making it highly flexible and maneuverable; through the dividing hopper, it can switch on three screening paths to obtain a variety of finished materials, its functions are more comprehensive, and its work efficiency is high and the screening effect is good.

[0065] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the claims and their equivalents.

Claims

1. A crawler-type impact mobile crushing and screening station, characterized in that: include: A frame (1) having a chassis (11) at its bottom, track wheel sets (12) being symmetrically arranged on both sides of the chassis (11), and the frame (1) comprising a frame front end (13) and a frame rear end (14) opposite to each other; A vibrating feeder (2), one end of which is provided with a feeding hopper (21), the feeding hopper (21) being provided with a feeding hopper inlet (22), the other end of the feeder (2) being provided with a first coarse material outlet (23), a first medium material outlet (24) and a first fine material outlet (25), and the feeder (2) being provided with a first vibrator (26); A material distribution hopper (3), comprising a material distribution hopper inlet (31), a second fine material outlet (32) and a second medium material outlet (33); a conversion device is provided in the material distribution hopper (3), and the conversion device can control the material distribution hopper inlet (31) to be connected to the first medium material outlet (24) and the first fine material outlet (25) at the same time, or the material distribution hopper inlet (31) to be connected to the first medium material outlet (24) and the first fine material outlet (25) respectively; a tail material belt (4), which is provided with a tail material belt feeding end (41) and a tail material belt discharging end (42), wherein the tail material belt feeding end (41) corresponds to the second fine material outlet (25), the tail material belt discharging end (42) extends outward from any side of the frame (1), and the tail material belt discharging end (42) can be switched between the two sides of the frame (1), the tail material belt discharging end (42) can be folded in any direction toward the front end (13) of the frame or the rear end (14) of the frame and can also be folded toward the side of the frame (1), and the tail material belt (4) is driven by a first electric roller (43); A main conveyor belt (5), which is provided with a main conveyor belt loading end (51) and a main conveyor belt unloading end (52), the main conveyor belt loading end (51) corresponding to the second intermediate material outlet (33), the main conveyor belt (5) being driven by a second electric roller (53), and an iron remover (54) being provided on the main conveyor belt (5); an impact crusher (6), provided with a crusher inlet (61) and a crusher outlet (62), wherein the crusher inlet (61) corresponds to the first coarse material outlet (23), and the crusher outlet (62) corresponds to the feeding end (51) of the main conveyor belt, and the impact crusher is provided with a crusher rotor (63); a return screen (7) disposed at the front end (13) of the frame, the return screen (7) being provided with a return screen inlet (71), a third coarse material inlet (72) and a finished product inlet (73), the return screen (7) being provided with a second vibrator (74), the return screen inlet (71) corresponding to the unloading end (52) of the main conveyor belt; A finished product belt (8), which is provided with a finished product belt loading end (81) and a finished product belt unloading end (82), wherein the finished product belt loading end (81) corresponds to the finished product port (73), and the finished product belt unloading end (82) extends outward from the front end (13) of the frame, and the finished product belt (8) is driven by a third electric roller (83); a return belt (9), which is provided with a return belt feed end (91) and a return belt feed end (92); a transition belt (93) is provided between the return belt feed end (91) and the third coarse material opening (72); the return belt feed end (92) extends all the way to the feed hopper inlet (22), and the two are connected to each other via the return hopper (94); the return belt (9) is driven by a fourth motorized roller (95), and the transition belt (93) is driven by a fifth motorized roller (97); A power system (10) comprises an engine (101), a generator (102) and a hydraulic pump (103), wherein one end of the engine (101) is connected to the crusher rotor (63) via a hydraulic coupler (104), the other end of the engine (101) is connected to one end of the generator (102) via a synchronous belt (105), and the other end of the generator (102) is connected to the output end of the hydraulic pump (103).

2. The crawler-type impact mobile crushing and screening station according to claim 1 is characterized in that: The feeding hopper (21) is formed by being surrounded by two or more hopper plates (211), and each hopper plate (211) is turned over by being driven by a first hydraulic cylinder (212).

3. The crawler-type impact mobile crushing and screening station according to claim 2 is characterized in that: The tail material belt (4) is provided with a second hydraulic cylinder (44) and a third hydraulic cylinder (45); the second hydraulic cylinder (44) can drive the tail material belt (4) to fold toward the side of the frame (1); and the third hydraulic cylinder (45) can drive the tail material belt (4) to fold toward both sides thereof.

4. The crawler-type impact mobile crushing and screening station according to claim 3 is characterized in that: The unloading end (92) of the return belt is connected to the side of the frame (1) via a fourth hydraulic cylinder (96), and the fourth hydraulic cylinder (96) can drive the unloading end (92) of the return belt to move up and down.

5. The crawler-type impact mobile crushing and screening station according to claim 4 is characterized in that: A fifth hydraulic cylinder (84) is provided between the finished product belt (8) and the frame (1), and the fifth hydraulic cylinder (84) is capable of controlling the extension and retraction of the finished product belt (8).

6. The crawler-type impact mobile crushing and screening station according to claim 5 is characterized in that: The crawler wheel assembly (12) is provided with a crawler travel motor (15), and the hydraulic pump (103) is used to provide power for the crawler travel motor, the first hydraulic cylinder (212), the second hydraulic cylinder (44), the third hydraulic cylinder (45), the fourth hydraulic cylinder (96) and the fifth hydraulic cylinder (84).

7. The crawler-type impact mobile crushing and screening station according to claim 1 is characterized in that: The first vibrator (26) is provided with a first vibration motor, and the second vibrator (74) is provided with a second vibration motor.

8. The crawler-type impact mobile crushing and screening station according to claim 7 is characterized in that: The generator (102) is capable of providing electric energy to the first vibration motor, the second vibration motor, the first electric roller (43), the second electric roller (53), the third electric roller (83), the fourth electric roller (95) and the fifth electric roller (97).

9. The crawler-type impact mobile crushing and screening station according to claim 1 is characterized in that: The vibrating feeder (2) is provided with a pre-screening grid plate and a pre-screening screen, the pre-screening grid plate and the pre-screening screen are arranged opposite to each other in an upper and lower direction, one end of the pre-screening grid plate is connected to the first coarse material outlet (23), and one end of the pre-screening screen is connected to the first medium material outlet (24).

10. The crawler-type impact mobile crushing and screening station according to claim 1, characterized in that: The return screen (7) is provided with two or more return screens, the ends of the return screens are butted against each other, and an angle of less than 180 degrees is formed between the return screens.

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