Extrusion-molded and solidified square grid and matched mechanical equipment and construction method of extrusion-molded and solidified square grid

Abstract

The invention discloses an extrusion molding and curing grid and matched mechanical equipment and a construction method thereof. The structural form of the extrusion molding and curing grid is cross-shaped, and the overall length and width are equal; a plurality of middle hollow lattice structures are arranged in the cross-shaped structure grids; and the cross section size is trapezoidal. In order to ensure railway operation safety and prevent sand wind, the grids of the structure are adopted, the middle of each grid is in a hollow grid shape, the height of the extruded and solidified grids is 30 cm, a 1m * 1m grid form unit is defined by the multiple grids of the cross-shaped structure, and the units are laid in a sand wind area around the railway. According to the invention, a grid structure form, especially a cross-shaped hollow structure, is adopted. Continuous mechanical construction is facilitated, the square sand stabilization effect is improved, and the cost is saved; the grid material is mainly made of accumulated sand which is locally obtained in a windy and sandy area, sand is used for controlling sand, the cost is saved, and the accumulated sand clearing and transporting problem is solved; matched machinery can be used for automatically feeding and batching according to setting, and the mechanization degree is high.

Description

Technical Field

[0001] The invention relates to a mechanical device and an extruded solidified grid prepared by the device and a construction method, in particular to an extruded solidified grid and its matching mechanical device and a construction method. Background Art

[0002] At present, many railways in my country pass through the arid and sandy areas of Northwest China and Inner Mongolia, where sand damage is serious. The railways in the sandy areas of Lanzhou Railway Bureau, Urumqi Railway Bureau, Hohhot Railway Bureau, Qinghai-Tibet Railway Company and other railways have a large demand for sand prevention and control. Involving the Lanxin Line, Baolan Line, Baozhong Line, Dunge Line and Jiu'e Railway, etc. Among them, the newly built Jiu'e Railway is a strategic backbone channel for the construction of a strong transportation country.

[0003] In terms of sand prevention and control measures, although windbreak walls, sand barriers and other layers of sand prevention and control measures have been set up along the railways with more significant sand damage, such as the Dunge and Jiu'e railways, the wind and sand near the rails are easily moved to the railway line due to the frequent changes in the direction of the airflow, and then buried in the sand, seriously affecting the operation of the railway. Due to the difficulty in land acquisition along some railways, it is impossible to set up sand prevention and control measures, which is also likely to affect the operation of the railway. The solidification of wind and sand is particularly important.

[0004] In terms of sand removal, manual cleaning is often very difficult. To ensure the safety of railway operations, local areas need sand removal teams to clean the sand on the line every day in a timely and effective manner, which consumes huge manpower and material resources. Although there are mature sand removal equipment, the sand removed is not suitable for re-stacked on both sides of the railway, and it is not suitable for transportation to far distances due to transportation costs. In addition, factors such as the difficulty in coordinating skylight points ultimately lead to the inability to use sand prevention and control cleaning equipment along the railway. It is urgent to solidify the mobile sand near the railway and try to prevent it from flowing.

[0005] The original grass grid has an average lifespan of 1-1.5 years and a height of 20cm. Now, with the improvement of social and economic level, labor shortage, frequent construction and large investment, it is no longer suitable. With the gradual increase in train speed, fire prevention and closed management requirements, high-standing, low-standing and flat sand barriers made of reeds can no longer fully adapt. The large-scale construction of concrete grids is suitable for the construction period. Due to structural influences, the height of block stones cannot be too high. There is a lack of stone materials in the local area, and the extraction of stone materials will bring new wind and sand problems, so its applicability is limited. Clay sand barriers have poor durability and will disintegrate and flow when exposed to water, causing the sand barriers to fail. HDPE sand barriers have uneven quality and uneven defects. They are affected by ultraviolet rays and have a limited lifespan. Good quality ones generally last 5-10 years, and poor quality ones last 1~2 years. After weathering, it pollutes the environment. It is now banned.

[0006] Therefore, the prior art has the following defects: (1) Poor durability. If damaged, there is a risk of the damage being blown onto the line, affecting driving safety. (2) Mainly manual work, construction quality is difficult to control and efficiency is low (3) Building materials are mainly transported from abroad, mainly to solve the problem of sand fixation and prevention, with little consideration given to the existing sand accumulation, while the cost of removing the existing sand accumulation is high. Summary of the invention

[0007] In order to solve the defects in the prior art, the present invention discloses an extrusion curing grid and its supporting mechanical equipment, and the technical scheme is as follows: A mechanical equipment for extrusion curing grid, which integrates crawler chassis, generator set, connection platform, drum mixer, belt conveyor, mold conveyor, screw conveyor, control system, water tank and water pump assembly, and is characterized by: Track chassis: Through manual / automatic control, the equipment can travel in complex Gobi desert sites; Generator set: adopts 40 horsepower Changchai engine, 30KW generator, 32L hydraulic pump, the thickness of diesel tank and hydraulic tank is 3MM, the air cooling system is dual drive, and the hydraulic oil pipe adopts high pressure explosion-proof; it provides independent power for the equipment to operate in the field; Connecting platform: used to support and fix the superstructure so that the load of the superstructure is evenly distributed on the crawler chassis; Screw conveyor: motor power 1.2KW, speed ratio 14, used for cement feeding; Drum mixer: The drum adopts the size of 1.6m*1.0m*1.2m, and the transmission part adopts the national standard rubber wheel, which can accommodate all the materials required for a single grid and fully mix them; The belt conveyor adopts a 0.5m wide and 5m structure to convey the fully stirred solidified material to the mold; The control system includes a display, operating system, sensor, and contactor, which can realize accurate feedback and control equipment operation, feeding and stirring, etc. Water tank: Equipped with a built-in 2.2KW water pump, which can automatically add quantitative water to the mixing tank through the control system; The mold lifter includes modules such as a hoist, a mold, and a vibrator, which can lift and lower the mold to complete injection molding, vibration compaction, and demoulding functions.

[0008] Preferably, the overall size of the equipment is 5.6m*2.4m*3.0m.

[0009] Preferably, the crawler chassis has a power of 15 kW and a size of 2.7 m*1.8 m*0.8 m.

[0010] Preferably, the connection platform is made of No. 12 I-beam with dimensions of 3.5m*2.4m*0.14m; the water tank has dimensions of 1.2m*0.8m*0.8m.

[0011] Preferably, the spiral tube used in the screw conveyor has a diameter of 165 mm, a wall thickness of 4 mm, and blades of 3.5-5.5 mm.

[0012] The present invention also discloses a construction method of supporting mechanical equipment for the extrusion solidification grid, which is characterized by: 1) Delineate the construction area and design the route; 2) The remote control equipment moves to the starting position, fills the water tank with water, fills the hopper with cement, and uses a forklift to load natural aeolian sand into the mixing tank; 3) Set the feeding ratio and mixing time as required on the operation table. The equipment will automatically transport cement to the mixing tank through the screw conveyor at the specified ratio for dry mixing. After the dry mixing is uniform, water will be automatically transported to the mixing tank through the water pump at the specified ratio for continued mixing. 4) After mixing evenly, operate the crane to lower the mold to the ground, and use the belt conveyor to transport the mixed material from the mixing tank to the mold; 5) Operate the equipment to vibrate so that the mixture is compacted in the mold, then lift the mold and slowly squeeze the squares out of the mold to prevent the squares from collapsing; 6) Appropriately add cement, water, and aeolian sand to the equipment, remotely control the equipment to move forward a certain distance, make the next square, and control the distance between adjacent squares to be between 5 and 10 cm; if the distance between squares is too small, there will not be enough space to make the next square, and if the distance is too large, it will be difficult to form an overall sand fixation effect between multiple squares.

[0013] The present invention also discloses an extruded solidified grid, which is prepared by the above method; its characteristics are: the grid structure is cross-shaped, with an overall length and width of 1.3m and an arm width of 30cm; the cross-shaped structural grid includes a plurality of middle hollow space structures; and the cross-sectional size is trapezoidal.

[0014] The present invention also discloses a method for preventing and controlling wind and sand to ensure the safety of railway operation, which is characterized by: comprising the above-mentioned structure with a hollow space in the middle, the extruded solidified grid has a height of 30 cm, and is surrounded by a plurality of cross-shaped grids to form a 1m*1m grid form unit, and the form unit is laid in the windy and sandy area around the railway.

[0015] Preferably, the lattice structure is made of a material of a mixture of local aeolian sand and an improver, and is rapidly demoulded after vibration extrusion. Beneficial Effects

[0016] (1) The main innovation of the present invention is to use local materials, using local accumulated sand as sand-proof building materials, turning waste into treasure.

[0017] (2) The building materials used in conventional technologies are mainly transported from outside, which is costly and cannot solve the problem of clearing and transporting accumulated sand. The present invention transforms the existing accumulated sand into a sand-proof structure, thus solving the problem of clearing and transporting accumulated sand. The addition of various cements and improvers is only for the purpose of utilizing the accumulated sand.

[0018] (3) The extrusion curing grid supporting mechanical equipment of the present invention integrates a crawler chassis, a generator set, a connecting platform, a drum mixer, a belt conveyor, a mold conveyor, a screw conveyor, a control system, and a water tank and water pump assembly into one, and can automatically feed and mix materials according to the settings, with a high degree of mechanization.

[0019] (4) Grid structure, especially the cross-shaped hollow structure. It is convenient for continuous mechanical construction, and improves the sand fixation effect of the grid and saves costs. The grid material is mainly made of accumulated sand in the sandy area. Sand is used to control sand, which not only saves costs but also solves the problem of sand removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the grass grid site in the prior art; Figure 2 It is a schematic diagram of a concrete grid in the prior art; Figure 3 It is a schematic diagram of HEPE sand barrier in the prior art; Figure 4 is the cross-sectional dimension and plane dimension of the present invention (unit: mm); Figure 5 This is a schematic diagram of the cross-sectional dimensions of the extrusion solidification lattice structure of the present invention (unit: mm); Figure 6 This is a schematic diagram of the three-dimensional effect of the extrusion solidification lattice structure of the present invention; Figure 7 It is an overall view of the device of the present invention; Figure 8 It is a side view of the device of the present invention; Fig. 9 It is a rear view of the device of the present invention; Fig.10 This is a process flow chart of the extrusion curing grid construction process of the present invention; Fig.11 This is a schematic diagram of the display screen of the loading terminal of the equipment of the present invention; Fig.12 This is a schematic diagram of the stirring and feeding site of the present invention; Fig.13 It is a schematic diagram of the vibration extrusion molding site of the present invention. DETAILED DESCRIPTION

[0021] In view of the problems of inconsistent durability, unstable construction quality, inability to handle existing sand accumulation, etc. in existing HDPE grid and other solidification barrier technologies, the present invention proposes an extruded solidification grid sand barrier constructed by special machinery. During construction, aeolian sand, cement, water, and cement improver are mixed evenly in a certain proportion, poured into a mold, vibrated and extruded into shape, and then directly demolded and set on the outside of the railway fireproof belt.

[0022] Proportion example: The main material is local aeolian sand, the cement content is 10%, the water content is 15%, and the cement modifier is KF-A, the content is 3% of the cement content. Adding KF-A can effectively improve the material curing strength.

[0023] This technical solution uses local materials, utilizing local accumulated sand as sand-proof building materials, turning waste into treasure.

[0024] The present invention proposes an extruded solidified grid technology as a low vertical sand barrier. (1) Design height 30 cm. According to the data, in windy and sandy areas, sand particles mainly creep and saltate within 30 cm near the surface, so the design height is 30 cm.

[0025] (2) The construction structure is in the shape of a cross, with an overall length and width of 1.3m and an arm width of 30cm. The cross-shaped structure is conducive to rapid and continuous construction. Under this size, multiple cross-shaped construction structures can be surrounded to form a 1m*1m square grid. According to the data, the 1m*1m square grid is widely applicable in windy and sandy areas and has a good sand accumulation cost-effectiveness.

[0026] (3) The hollow hole in the middle of the structure is conducive to increasing the surface solidification area, increasing the sand storage space after intercepting the wind and sand, further reducing the incoming wind speed, and reducing material consumption.

[0027] (4) The cross-section of the grid is a trapezoid that is narrow at the top and wide at the bottom, which is conducive to maintaining the stability of the structure.

[0028] The material used is a mixture of local aeolian sand and modifiers. Using local aeolian sand as the main material of the grid can solve the problem of sand removal. It is required that after the addition of modifiers, the material has a certain self-compacting performance, low slump, fast molding, and can be quickly demolded after vibration extrusion. Optional See also Figure 7-9 , Figure 11-13 As shown, the extruded solidified grid material used in the present invention is realized by supporting mechanical equipment, including a crawler chassis, a generator set, a connecting platform, a drum mixer, a belt conveyor, a mold conveyor, a screw conveyor, a control system, a water tank, and a water pump, and its parameters are as follows: The overall structure of the automatic grid curing vehicle is shown in Table 6-1:

[0029] The detailed parameters of each component of the automatic grid curing vehicle are shown in Table 6-2.

[0030] The crawler chassis has a power of 15KW and dimensions of 2.7m*1.8m*0.8m. It can be manually / automatically controlled to provide the equipment with the ability to travel in complex sites such as the Gobi Desert.

[0031] The generator set uses a 40-horsepower Changchai engine, a 30KW generator, and a 32L hydraulic pump to provide independent power for the equipment to operate in the field.

[0032] The connecting platform is made of No. 12 I-steel with a size of 3.5m*2.4m*0.14m, which is used to support and fix the superstructure so that the load of the superstructure is evenly distributed on the crawler chassis.

[0033] The spiral tube diameter of the screw conveyor is 165mm, the wall thickness is 4mm, the blades are 3.5-5.5mm, the motor power is 1.2KW, the speed ratio is 14, and it is used for cement feeding.

[0034] The drum mixer uses a drum with a size of 1.6m*1.0m*1.2m, which can accommodate all the materials required for a single grid and mix them fully.

[0035] The belt conveyor adopts a 0.5m wide and 5m structure and is used to transport the fully stirred solidified material to the mold.

[0036] The control system includes a display, operating system, sensors, and contactors, which can achieve accurate feedback and control of equipment operation, feeding and stirring, and other functions.

[0037] The water tank measures 1.2m*0.8m*0.8m and is equipped with a built-in 2.2KW water pump, which can automatically add quantitative water to the mixing tank through the control system.

[0038] The mold lifter includes modules such as a hoist, a mold, and a vibrator, which can lift and lower the mold to complete functions such as injection molding, vibration compaction, and demoulding.

[0039] Table 6-2 Detailed parameters of each component of the automatic grid curing vehicle

[0040] The specific construction method of the present invention using the above extrusion curing grid supporting mechanical equipment is as follows, and the flow chart is shown in Fig.10 As shown: 1) Delineate the construction area and design the route.

[0041] 2) The remote control equipment moves to the starting position, fills the water tank with water, fills the hopper with cement, and uses a forklift to load natural aeolian sand into the mixing tank.

[0042] 3) Set the feeding ratio and mixing time as required on the operation table, and the equipment will automatically transport cement to the mixing tank through the screw conveyor at the specified ratio for dry mixing. After the dry mixing is uniform, water will be automatically transported to the mixing tank through the water pump at the specified ratio for continued mixing.

[0043] 4) After mixing evenly, operate the crane to lower the mold to the ground, and use the belt conveyor to transport the mixed material from the mixing tank to the mold.

[0044] 5) Operate the equipment and vibrate it to make the mixture compact and shaped in the mold. Then lift the mold and slowly squeeze the squares out of the mold to prevent the squares from collapsing.

[0045] 6) Add cement, water and aeolian sand to the equipment appropriately, and remotely control the equipment to move forward a certain distance to make the next square, and control the spacing between adjacent squares to be between 5 and 10 cm. If the spacing between squares is too small, there will not be enough space to make the next square, and if the spacing is too large, it will be difficult to form an overall sand fixation effect between multiple squares.

[0046] The present invention adopts a lattice structure, especially a cross-shaped hollow structure, which is convenient for continuous mechanical construction, improves the sand fixation effect of the lattice and saves costs; the lattice material is mainly made of accumulated sand collected locally in the sandy area, and sand is used to fix sand, which not only saves costs but also solves the problem of sand removal; the supporting machinery can automatically feed and mix materials according to the settings, and the degree of mechanization is high.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A mechanical equipment for extrusion curing grid, which integrates crawler chassis, generator set, connection platform, drum mixer, belt conveyor, mold conveyor, screw conveyor, control system, water tank and water pump assembly, and is characterized by: Track chassis: Through manual / automatic control, the equipment can travel in complex Gobi desert sites; Generator set: adopts 40 horsepower Changchai engine, 30KW generator, 32L hydraulic pump, the thickness of diesel tank and hydraulic tank is 3MM, the air cooling system is dual drive, and the hydraulic oil pipe adopts high pressure explosion-proof; it provides independent power for the equipment to operate in the field; Connecting platform: used to support and fix the superstructure so that the load of the superstructure is evenly distributed on the crawler chassis; Screw conveyor: motor power 1.2KW, speed ratio 14, used for cement feeding; Drum mixer: The drum adopts the size of 1.6m*1.0m*1.2m, and the transmission part adopts the national standard rubber wheel, which can accommodate all the materials required for a single grid and fully mix them; The belt conveyor adopts a 0.5m wide and 5m structure to convey the fully stirred solidified material to the mold; The control system includes a display, operating system, sensor, and contactor, which can achieve accurate feedback and control equipment operation, feeding and mixing functions; Water tank: Equipped with a built-in 2.2KW water pump, which can automatically add quantitative water to the mixing tank through the control system; The mold lifter includes a hoist, a mold, and a vibrator module to lift and lower the mold to complete injection molding, vibration compaction, and demoulding functions.

2. The extrusion curing grid supporting mechanical equipment according to claim 1 is characterized by: The overall size of the equipment is: 5.6m*2.4m*3.0m.

3. The extrusion curing grid supporting mechanical equipment according to claim 1 is characterized by: The crawler chassis has a power of 15KW and a size of 2.7m*1.8m*0.8m.

4. The extrusion curing grid supporting mechanical equipment according to claim 1 is characterized by: The connecting platform is made of No. 12 I-beam with dimensions of 3.5m*2.4m*0.14m; the water tank dimensions are 1.2m*0.8m*0.8m.

5. The extrusion curing grid supporting mechanical equipment according to claim 1, characterized in that: The spiral tube used in the spiral conveyor has a diameter of 165 mm, a wall thickness of 4 mm, and blades of 3.5-5.5 mm.

6. A construction method for supporting mechanical equipment for extrusion curing grid according to any one of claims 1 to 5, characterized in that: 1) Delineate the construction area and design the route; 2) The remote control equipment moves to the starting position, fills the water tank with water, fills the hopper with cement, and uses a forklift to load natural aeolian sand into the mixing tank; 3) Set the feeding ratio and mixing time as required on the operation table. The equipment will automatically transport cement to the mixing tank through the screw conveyor at the specified ratio for dry mixing. After the dry mixing is uniform, water will be automatically transported to the mixing tank through the water pump at the specified ratio for continued mixing. 4) After mixing evenly, operate the crane to lower the mold to the ground, and use the belt conveyor to transport the mixed material from the mixing tank to the mold; 5) Operate the equipment to vibrate so that the mixture is compacted in the mold, then lift the mold and slowly squeeze the squares out of the mold to prevent the squares from collapsing; 6) Add cement, water and aeolian sand to the equipment, remotely control the equipment to move forward a certain distance to make the next square, and control the distance between adjacent squares to be between 5 and 10 cm. If the distance between squares is too small, there will not be enough space to make the next square, and if the distance is too large, it will be difficult to form an overall sand fixation effect between multiple squares.

7. An extrusion solidified square grid, which is prepared by the method of claim 6; wherein: The lattice structure is in the shape of a cross, with an overall length and width of 1.3m and an arm width of 30cm; the cross-shaped structural lattice includes a plurality of hollow hollow structures in the middle; and the cross-sectional dimension is a trapezoid.

8. A method for preventing and controlling wind and sand to ensure railway operation safety, characterized by: It includes the hollow space in the middle of the structure as described in claim 7, the height of the extruded solidified grid is 30 cm, and a plurality of cross-shaped grids are used to form 1m*1m grid form units, and the form units are laid in the windy and sandy areas around the railway.

9. The method for preventing and controlling wind and sand to ensure railway operation safety according to claim 8 is characterized by: The material used for the lattice structure is a mixture of local aeolian sand and an improver; the lattice structure is quickly demoulded and formed after vibration extrusion.

Images