CN118407303A - Capping gravel paving equipment and paving method for preventing wind erosion - Google Patents

Abstract

The invention relates to a gland gravel spreading device for preventing wind erosion and a spreading method, wherein the gland gravel spreading device comprises a vehicle suitable for transporting gland gravel, a carriage of the vehicle is used as a distributing box, and the spreading device further comprises a feeding area which is arranged above a box opening of the distributing box; the screening bin is suitable for receiving and screening the raw materials from the feeding area and is arranged in the material dividing box; the spreading bin is suitable for receiving, distributing and spreading the spreading materials from the screening bin and is arranged at the tail part of the distributing box. The gland gravel spreading equipment for preventing wind erosion integrates the functions of feeding, sieving, distributing, spreading and the like, and raw material sieving is completed, so that compared with the traditional source sieving equipment, the invention does not need to be provided with a sieving field alone, and does not need redundant mechanical cooperation in a gravel spreading link.

Description

Capping gravel paving equipment and paving method for preventing wind erosion

Technical Field

The invention belongs to the field of gravel paving, and in particular relates to capping gravel paving equipment and a paving method for preventing and controlling wind erosion.

Background technique

Gravel capping is widely used in the prevention and control of soil erosion in wind erosion areas. Its main function is to protect the fine particles on the soil surface from being eroded by strong winds, increase soil moisture content, improve soil pore structure, protect organic matter and bacterial structure in the soil, improve soil quality and promote soil fertility. The traditional gravel capping construction process mainly includes material source screening, gravel transportation, multi-machine coordination paving, etc. The process is cumbersome and the quality is difficult to control. Among them, the type of material source screening equipment has complex requirements and occupies a large area of the site, which is not easy to carry out in mountainous and hilly areas; especially gravel paving requires traditional loaders, excavators and other machinery to cooperate with each other, which is time-consuming and labor-intensive, with a long construction period, and uneven paving thickness, which can easily cause insufficient gravel capping thickness or waste of gravel resources, and the overall wind erosion prevention effect is poor.

Summary of the invention

The purpose of the present invention is to provide a capping gravel paving device and a paving method for preventing and controlling wind erosion, so as to overcome the above-mentioned technical defects.

In order to solve the above technical problems, the present invention provides a capping gravel paving device for preventing and controlling wind erosion, comprising a vehicle suitable for transporting capping gravel, the compartment of the vehicle serving as a material distribution box, and the paving device further comprising:

The feeding area is arranged above the box opening of the material distribution box;

The screening bin is suitable for receiving and screening the raw materials from the feeding area, and the screening bin is arranged in the material distribution box;

The paving bin is suitable for receiving, distributing and paving materials from the screening bin. The paving bin is installed at the tail of the material distribution box.

The internal space of the material distribution box is divided into two layers, namely the screening bin on the upper layer and the waste collection bin on the lower layer;

Among them, the waste collection bin at least includes a waste conveyor belt, which is used to receive the waste materials screened out by the screening bin, and the height of the waste conveyor belt from the bottom of the bin gradually decreases from the rear of the vehicle to the front of the vehicle.

The conveying direction of the waste conveyor belt is from high to low or from the rear of the vehicle to the front of the vehicle;

Along the feeding direction, a conveyor belt is arranged at the tail end of the waste conveyor belt;

The feeding direction of the conveyor belt is perpendicular to the feeding direction of the scrap conveyor belt.

The screening bin shall include at least:

The height of the vibrating screen plate from the bottom of the box gradually decreases from the front to the rear of the vehicle;

The vibration device is installed on the bottom surface of the vibration screen plate.

An upper gravel collection slope is also provided inside the material distribution box;

Along the conveying direction, the head of the waste conveyor belt is adjacent to the head of the upper gravel collection slope, and the adjacent position is the highest point of the two. The upper gravel collection slope gradually slopes from the highest point to the rear of the vehicle;

The upper gravel collecting slope receives the upper gravel screened out by the rear half of the vibrating screen disc directly above, and the upper gravel collecting slope transports the upper gravel to the paving bin.

The paving bin shall include at least:

The second material spreading spiral wheel is installed in the material spreading bin;

A scraper is arranged at the paving opening of the paving bin to change the thickness of the capping gravel layer.

The present invention also provides a capping gravel paving method for preventing and controlling wind erosion, which is applicable to a capping gravel paving device for preventing and controlling wind erosion. The paving method comprises:

The raw materials are dispersed and fall from the feeding area into the screening bin;

According to the required capping gravel particle size, adjust the screening bin to obtain the paving material with the best particle size;

The screening bin transports the paving material into the paving bin;

The vehicle moves forward at a constant speed;

The paving bin distributes the paving material evenly to form a capping gravel layer.

According to the required capping gravel particle size, the screening bin is adjusted to obtain the paving material with the best particle size, which means: the screen bar spacing d of the vibrating screen plate is set according to the required capping gravel particle size, and according to the particle gradation of the original material source, the optimal inclination slope i ₁ of the screening bin is adjusted, and the optimal vibration frequency is set to obtain the paving material with the best particle size.

Before the paving process begins, the vehicle route needs to be designed, including:

Select the spoil platform as the target site;

Divide the target site into multiple adjacent operation zones;

The vehicle completes the capping gravel paving of all work areas one by one according to the serpentine route.

All the operation partitions are numbered sequentially as the first operation partition, the second operation partition, ... the Nth operation partition;

The vehicle completes the capping gravel paving of all work areas area by area according to the serpentine route, specifically:

After the capping gravel from the screening bin and the upper gravel collecting slope falls into the paving bin, the second spreading spiral wheel in the paving bin spreads the capping gravel in the first working area, and at the same time, the waste conveyor belt conveys the waste material to the second working area through the conveyor belt;

When the vehicle completes the paving of the capping gravel in the first working area, the vehicle enters the second working area and paves the capping gravel from the screening bin and the upper gravel collection slope to cover the waste material in the second working area. At the same time, the waste conveyor belt conveys the waste material to the third working area through the conveyor belt;

Repeat the above steps until all work areas have been paved with capping gravel.

The capping gravel paving equipment for preventing and controlling wind erosion integrates the functions of feeding, screening, spreading, and paving, and completes the raw material screening. Therefore, compared with the traditional material source screening equipment, the present invention does not need to set up a separate screening site, and does not require redundant machinery in the gravel paving link.

When using capping gravel paving equipment to prevent and control wind erosion, the raw materials are screened into useful materials and waste materials. The waste materials are first transported and scattered in the target working area, and then the useful materials are used to spread and cover the waste materials, forming a surface layer with fine materials (i.e. waste materials) as the basis and capping gravel as the surface protection material, so as to achieve the capping and protection of fine particles and realize the secondary utilization of waste materials.

In order to make the above contents of the present invention more clearly understood, preferred embodiments are given below and described in detail in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a capping gravel paving device for preventing and controlling wind erosion.

FIG. 2 is a rear view of the capping gravel paving equipment for preventing and controlling wind erosion.

FIG. 3 is a top view of a capping gravel paving device for preventing and controlling wind erosion.

Description of reference numerals:

10. Material distribution box;

20. Feeding area; 21. First feeding spiral wheel;

30. Screening bin; 31. Vibrating screen plate; 32. Vibrating device;

40. Material spreading bin; 41. Second material spreading spiral wheel; 42. Scraper;

50. Waste collection bin; 51. Waste conveyor belt; 52. Conveyor belt;

60. Upper gravel collection slope.

Detailed ways

The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

It should be noted that, in the present invention, the top, bottom, left and right in the figure are deemed as the top, bottom, left and right of the capping gravel paving equipment for preventing and controlling wind erosion described in this specification.

The exemplary embodiments of the present invention are now described with reference to the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely and to fully convey the scope of the present invention to those skilled in the art. The terms used in the exemplary embodiments shown in the accompanying drawings are not intended to limit the present invention. In the accompanying drawings, the same units/elements are marked with the same reference numerals.

Unless otherwise specified, the terms (including technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it is understood that the terms defined in commonly used dictionaries should be understood to have the same meanings as those in the context of the relevant fields, and should not be understood as idealized or overly formal meanings.

The present embodiment relates to a capping gravel paving device for preventing and controlling wind erosion, including a vehicle suitable for transporting capping gravel, the compartment of the vehicle serving as a material distribution box 10, see FIG1 , the paving device further includes a feeding area 20, a screening bin 30 and a paving bin 40, these three functional areas are all arranged in the vehicle, therefore, the material distribution box 10 has the functions of feeding, screening, spreading, paving, etc., as follows:

(a) The feeding area 20 is arranged above the box opening of the material distribution box 10. The raw materials transported by other vehicles are poured into the feeding area 20, and the raw materials are initially distributed by the feeding area 20. The feeding area 20 adopts an inverted trapezoidal cavity as a feeding bin, and a first distribution spiral wheel 21 is installed at the bottom of the feeding bin. The first distribution spiral wheel 21 disperses the original sand and gravel (i.e., raw materials) concentrated at the feeding port and falls into the screening bin 30.

The first distribution spiral wheel 21 is used to distribute the original sand and gravel poured into the feed bin from the center to both sides of the screening bin 30 to avoid the feed from accumulating in the center of the screening bin 30 and to spread the feed on the surface of the screening bin 30 .

(b) The screening bin 30 is suitable for receiving and screening the raw materials from the feeding area 20, and the screening bin 30 is arranged in the material distribution box 10. When the raw materials in the feeding area 20 are dispersed and fall into the screening bin 30, the screening bin 30 screens the raw materials, and the screened waste materials are used for other purposes. At the same time, the screened capping gravel is transported to the paving bin 40.

(c) The paving bin 40 is suitable for receiving, distributing and paving the paving material from the screening bin 30. The paving bin 40 is installed at the tail of the material distribution box 10. According to the medium flow direction, that is, the conveying direction of the capping gravel, the paving bin 40 is installed at the tail of the material distribution box 10 to collect and spread the capping gravel.

The above is the overall structure of the capping gravel paving equipment. It can be seen that the capping gravel paving equipment can realize the whole process of material source screening, gravel transportation, gravel paving, etc. with only one vehicle. It not only simplifies the existing gravel capping construction process, but also does not need to set up a separate screening site, and also realizes wind erosion prevention and control.

Please continue to refer to Figure 2. In some embodiments, the internal space of the distribution box 10 is divided into two layers, namely, a screening bin 30 located at the upper layer and a waste collection bin 50 located at the lower layer, that is, the raw materials in the feeding area 20 will be dispersed and fall into the screening bin 30 of the upper layer, and the waste screened out by the screening bin 30 will fall into the waste collection bin 50 below.

The structure of the screening bin 30 will be described in detail below:

The screening bin 30 at least includes a vibrating screen plate 31 and a vibrating device 32 .

Among them, the height of the vibrating screen plate 31 from the bottom of the box gradually decreases from the front to the rear of the vehicle, that is, the vibrating screen plate 31 is arranged obliquely. According to the viewing angle shown in Figure 1, the front end of the vibrating screen plate 31 is high and the rear end is low, or the left end is high and the right end is low, so as to realize the backward movement of the capping gravel.

In some embodiments, the vibrating screen plate 31 is a bar screen plate. In conjunction with FIG. 1 to FIG. 3 , the bar screen plate is composed of a plurality of bar screens evenly spaced apart. The bar spacing is d. The spacing d can be set according to the required capping gravel particle size. According to the particle grading of the original material source, the optimal inclination slope i ₁ of the vibrating screen plate 31 is adjusted, and the optimal vibration frequency is set to obtain paving materials with optimal particle size.

The vibration device 32 is installed on the bottom surface of the vibration screen plate 31. As shown in FIG1, the vibration device 32 is installed at the front end and the rear end of the vibration screen plate 31. The vibration device 32 can provide vibration force for the vibration screen plate 31. The number and position of the vibration device 32 are not limited, and can be as shown in FIG1, or can be changed according to actual applications.

In some embodiments, the front end vibration device 32 is mounted on the bottom surface of the vibration screen plate 31 through a bracket.

The vibration device 32 may be a spring or other vibration structures.

Under the action of the vibrating device 32, the vibrating screen plate 31 screens the original sand and gravel into useful capping gravel and useless fine aggregate. The capping gravel moves backward on the vibrating screen plate 31 until it falls into the paving bin 40, and the fine aggregate falls into the waste collection bin 50 directly below.

As shown in FIG. 1 , the waste collecting bin 50 at least includes a waste conveyor belt 51 , which is used to receive the waste material screened out by the screening bin 30 , and the height of the waste conveyor belt 51 from the bottom of the bin gradually decreases from the rear end to the front end of the vehicle.

As can be seen from FIG. 1 , the waste conveyor belt 51 is also inclined, but the inclination direction of the waste conveyor belt 51 is opposite to the inclination direction of the vibrating screen plate 31, that is, the waste conveyor belt 51 is low in the front and high in the back. Compared with the feeding direction of the vibrating screen plate 31, the waste conveyor belt 51 transports fine aggregate in the opposite direction. Specifically:

The conveying direction of the waste conveyor belt 51 is from high to low or from the rear end to the front end of the vehicle. Along the conveying direction, a conveyor belt 52 is arranged at the tail end of the waste conveyor belt 51 , and the conveying direction of the conveyor belt 52 is perpendicular to the conveying direction of the waste conveyor belt 51 .

The contact position between the waste conveyor belt 51 and the conveyor belt 52 may be treated as a joint, the purpose of which is to reduce the scattering of fine aggregate at the joint position between the two.

The waste conveyor belt 51 can adopt a structure such as a slope, a conveyor belt, a vibrating screen, etc. to transport the fine aggregate screened by the vibrating screen plate 31 to a lower place. A conveyor belt 52 is set at the lowest point. The conveyor belt 52 can change the transportation direction of the fine aggregate and finally collect the fine aggregate or directly scatter it.

It should be specially noted here that capping gravel is used to protect fine particles on the soil surface from being eroded by strong winds. For example, capping gravel can be spread on the platform of the spoil yard. Before laying the capping gravel, fine aggregate can be scattered on the platform of the spoil yard as the first layer of paving material, and then the capping gravel can be covered on the first layer of paving material. That is, although the fine aggregate is called waste material, it is not abandoned. It is just that it is not used as capping gravel, but is scattered. The fine aggregate is scattered to the other side of the vehicle where gravel capping has not yet been carried out. After this section is paved, the part sprinkled with fine aggregate will be paved, or the fine aggregate will be collected and transported to other areas for reuse.

Continuing to refer to Figure 1, during the gravel screening process, as the gravel material descends, the gravel thickness gradually decreases, and some upper gravel at the tail of the vibrating screen disc 31 will also meet the requirements. Therefore, a reverse slope of a certain distance B is also provided inside the distribution box 10, i.e., an upper gravel collecting slope 60. The capping gravel that meets the requirements screened out from the tail of the vibrating screen disc 31 falls on the upper gravel collecting slope 4, and is then transported by the upper gravel collecting slope 4 to fall into the paving bin 40.

The upper gravel collecting slope 60 can be a slope or a conveyor belt.

Along the conveying direction, the head of the waste conveyor belt 51 is adjacent to the head of the upper gravel collecting slope 60, and the adjacent position is the highest point of the two. The upper gravel collecting slope 60 gradually tilts from the highest point to the rear of the vehicle, that is, the inclination directions of the waste conveyor belt 51 and the upper gravel collecting slope 60 are opposite, but the inclination direction of the upper gravel collecting slope 60 is the same as the inclination direction of the vibrating screen plate 31, so as to transport the gravel falling on the upper gravel collecting slope 4 into the paving bin 40, that is, the upper gravel collecting slope 60 receives the upper gravel screened out by the second half of the vibrating screen plate 31 directly above, and the upper gravel collecting slope 60 transports the upper gravel to the paving bin 40.

The material paving bin 40 at least comprises:

(1) The second spreading spiral wheel 41 is installed in the paving bin 40. The second spreading spiral wheel 41 is used to spread the capping gravel in the paving bin 40 evenly to both sides, so as to facilitate the subsequent paving operation of the capping gravel.

(2) Scraper 42, which is arranged at the paving opening of paving bin 40 to change the thickness of the gravel layer. That is, the lower end of paving bin 40 is also connected with a rotatable scraper 42, and the thickness of the paved gravel layer can be changed by changing the height of the scraper 42 from the ground.

The top of the paving bin 40 is open and bottomless, and is used to receive gravel transported by the upper gravel collecting slope 60 and the vibrating screen plate 31. In addition, the width of the paving bin 40 is greater than the width of the distribution box 10, so that a larger area can be paved at one time.

This embodiment also provides a capping gravel paving method for preventing wind erosion, which is applicable to a capping gravel paving device for preventing wind erosion. The paving method includes:

In step 100 , the raw materials are dispersed and dropped from the feed area 20 into the screening bin 30 .

The raw materials transported by other vehicles are dumped into the feeding area 20, and the raw materials are preliminarily distributed by the feeding area 20. The first distribution spiral wheel 21 in the feeding area 20 is used to distribute the original sand and gravel poured into the feeding bin from the center to the two sides of the screening bin 30, so as to avoid the feed materials from being accumulated in the center of the screening bin 30 and to spread the feed materials on the surface of the screening bin 30.

Step 200, according to the required capping gravel particle size, adjust the screening bin 30 to obtain paving material with the best particle size.

The screen bar spacing d of the vibrating screen plate 31 is set according to the required capping gravel particle size, and the optimal inclination gradient i ₁ of the screen bin 30 is adjusted and the optimal vibration frequency is set according to the particle size distribution of the original material source to obtain paving materials with optimal particle size.

Step 300 : the screening bin 30 delivers the paving material to the paving bin 40 .

The vibrating screen plate 31 in the screening bin 30 screens the original sand and gravel into useful capping gravel and useless fine aggregate. The useful capping gravel moves backward on the vibrating screen plate 31 until it falls into the paving bin 40, and the useless fine aggregate falls into the waste collection bin 50 directly below.

At the same time, part of the upper gravel screened out at the tail of the vibrating screen plate 31 will fall onto the upper gravel collecting slope 60 , and the upper gravel collecting slope 60 transports the upper gravel to the paving bin 40 .

Step 400: The vehicle moves forward at a constant speed.

In some embodiments, the vehicle speed may be changed according to actual road conditions and requirements.

Step 500: the paving bin 40 evenly distributes the paving material to form a capping gravel layer.

Gravel from the upper gravel collecting slope 60 and the vibrating screen plate 31 falls into the paving bin 40, and the second spreading spiral wheel 41 in the paving bin 40 presses the gravel to spread it evenly on both sides. As the vehicle moves forward at a constant speed, the gravel flows out from the scraper 42 for paving.

It is worth mentioning that before the paving process begins, the vehicle's route needs to be designed, including:

The abandoned slag dump platform is selected as the target site; the target site is divided into multiple adjacent working areas; the vehicle completes the capping gravel paving of all working areas one by one according to the serpentine route.

The target site is divided into a plurality of adjacent operation zones, wherein all the operation zones are numbered sequentially as a first operation zone, a second operation zone, ... an Nth operation zone.

The vehicle completes the capping gravel paving of all work areas area by area according to the serpentine route, specifically:

(I) After the capping gravel from the screening bin 30 and the upper gravel collecting slope 60 falls into the paving bin 40, the second spreading spiral wheel 41 in the paving bin 40 spreads the capping gravel in the first working area. At the same time, the waste conveyor belt 51 conveys the waste material to the second working area through the conveyor belt 52.

At this time, a layer of fine aggregate was sprinkled on the second working area as a base layer.

(II) After the vehicle completes the paving of the capping gravel in the first working section, the vehicle turns around and enters the second working section and paves the capping gravel from the screening bin 30 and the upper gravel collecting slope 60 to cover the waste material (i.e., fine aggregate) in the second working section. At the same time, the waste conveyor belt 51 conveys the waste material to the third working section through the conveyor belt 52.

That is to say, the road surface of the second working area has at least two layers of paving, the first layer is fine aggregate screened out by the screening bin 30, and the second layer is capping gravel, that is, the fine aggregate is not discarded, so no additional transportation capacity is required to handle the fine aggregate, but the fine aggregate is reused as useful material.

(III) Repeat the above steps until the gravel paving of all work areas is completed.

When using capping gravel paving equipment to prevent and control wind erosion, the raw materials are screened into useful materials and waste materials. The waste materials are first transported and scattered in the target working area, and then the useful materials are used to spread and cover the waste materials, forming a surface layer with fine materials (i.e. waste materials) as the basis and capping gravel as the surface protection material, so as to achieve the capping and protection of fine particles and realize the secondary utilization of waste materials.

The capping gravel paving equipment achieves the goal of capping and protecting fine particles by screening existing sand and gravel before paving, solving problems such as low efficiency and uneven gravel paving. It combines multiple main functions such as screening and paving, does not require a separate screening site, and does not require extra machinery in the gravel paving process. It is easy to install and disassemble, and is environmentally friendly, economical, safe, efficient, and easy to maintain, greatly shortening the construction period of gravel paving.

Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims (10)

1. Gland gravel spreading apparatus for controlling wind erosion comprising a vehicle adapted to transport gland gravel, the compartment of the vehicle being a distribution box (10), characterized in that the spreading apparatus further comprises:

The feeding area (20) is arranged above the box opening of the material dividing box (10);

-a screening bin (30) adapted to receive and screen the raw material from the feed zone (20), the screening bin (30) being provided in the distribution box (10);

-a spreading bin (40) adapted to receive, distribute, spread the spreading material from the screen bin (30), the spreading bin (40) being mounted at the tail of the distribution box (10).

2. Gland gravel spreading apparatus for preventing wind erosion according to claim 1, wherein the inner space of the distribution box (10) is divided into an upper layer and a lower layer, the upper layer being the screen bin (30) and the lower layer being the waste collection bin (50), respectively;

The waste collection bin (50) at least comprises a waste conveying belt (51), the waste conveying belt (51) is used for receiving waste screened out by the screening bin (30), and the height of the waste conveying belt (51) from the bottom of the bin is gradually reduced from the tail to the head.

3. The gland gravel spreading apparatus for preventing wind erosion according to claim 2, wherein the feeding direction of the waste conveyor belt (51) is from high to low or from tail to head;

A conveyor belt (52) is arranged at the tail end of the waste conveying belt (51) along the conveying direction;

the feeding direction of the conveyor belt (52) is perpendicular to the feeding direction of the waste conveyor belt (51).

4. The apparatus for gland gravel spreading against wind erosion according to claim 2, characterized in that the screen silo (30) comprises at least:

a vibrating screen disc (31) with the height from the bottom of the box gradually decreasing from the head to the tail;

and a vibrating device (32) mounted on the bottom surface of the vibrating screen plate (31).

5. Gland gravel spreading apparatus for preventing wind erosion according to claim 4, characterized in that an upper layer gravel collection slope (60) is also provided inside the distribution box (10);

Along the conveying direction, the head of the waste conveying belt (51) is adjacent to the head of the upper layer gravel collection slope (60), the adjacent positions are the highest positions of the two, and the upper layer gravel collection slope (60) is gradually inclined from the highest position to the tail of the vehicle;

the upper gravel collection slope (60) receives upper gravel from the second half of the vibrating screen tray (31) directly above and the upper gravel collection slope (60) conveys the upper gravel to the bunkers (40).

6. The gland gravel spreading apparatus for preventing wind erosion according to claim 5, wherein the bunkers (40) comprise at least:

A second cloth screw wheel (41) arranged in the material spreading bin (40);

and the scraping plate (42) is arranged at a spreading opening of the spreading bin (40) so as to change the thickness of the gland gravel layer.

7. A method of gland gravel spreading against wind erosion, suitable for the apparatus for gland gravel spreading against wind erosion according to any one of claims 1 to 6, characterized in that the method of spreading comprises:

the raw materials fall into the screening bin (30) in a dispersing way from the feeding area (20);

Adjusting the screen bin (30) to obtain a spreading material of optimal particle size according to the required gland gravel particle size;

the screening bin (30) conveys the paving material into the paving bin (40);

The vehicle moves forward at a constant speed;

the spreading bin (40) distributes the spreading materials uniformly to form a gland gravel layer.

8. The method of gland gravel spreading against wind erosion according to claim 7, characterized in that adjusting the screen bin (30) to obtain a spreading of optimal particle size according to the desired gland gravel particle size, means: setting the screen bar spacing d of the vibrating screen disc (31) according to the required gland gravel particle size, adjusting the optimal inclination gradient i ₁ of the screen bin (30) according to the particle grading of the raw material source, and setting the optimal vibration frequency to obtain the spreading material with the optimal particle size.

9. The method for gland gravel spreading against wind erosion according to claim 7, wherein the travel route of the vehicle is required to be designed before the spreading step is started, specifically comprising:

selecting a waste slag field platform as a target field;

Dividing the target site into a plurality of adjacent operation partitions;

The vehicle completes gland gravel spreading of all operation areas area by area according to a serpentine travel route.

10. The method for gland gravel spreading for preventing wind erosion according to claim 9, wherein all the job partitions are sequentially numbered as a first job partition, a second job partition … … N-th job partition;

The vehicle completes gland gravel paving of all operation areas area by area according to a serpentine travelling route, and specifically comprises the following steps:

After falling into the bunkers (40), the gland gravels from the screening bunkers (30) and the upper layer gravels collecting slope (60) are spread on a first operation area by a second distributing spiral wheel (41) in the bunkers (40), and meanwhile, the waste conveying belt (51) conveys waste to a second operation area through the conveying belt (52);

After the vehicle completes the gland gravel spreading of the first working zone, the vehicle enters the second working zone and spreads the gland gravel from the screening bin (30) and the upper layer gravel collection slope (60) to cover the waste material of the second working zone, and meanwhile, the waste material conveying belt (51) conveys the waste material to the third working zone through the conveying belt (52);

and repeating the steps until the gland gravels of all the operation partitions are paved.