Assembly type underground silo hoisting system and hoisting method

Abstract

The invention relates to an assembly type underground silo hoisting system and hoisting method. Comprising a truss crane arranged on a foundation pit and a truck crane located outside the foundation pit, a square frame lifting appliance of the truss crane is provided with a square through hole allowing a square silo to penetrate through, and during use, the truck crane is connected with a threaded hole in the top of the square silo through a lifting ring bolt below a lifting rope and lifts the square silo to penetrate through the square through hole; a hydraulic cylinder on the lower portion of the square frame lifting appliance drives a lifting plate to move downwards, after the lifting plate is rotated, bolt holes in the lifting plate are connected with unused threaded holes in the square silo through bolts, a lifting rope of a truck crane can be taken down, the square silo is lifted by a truss crane, and when the square silo is lifted out, a basically similar and opposite operation mode is adopted. The air connection mode has the advantages of convenience, rapidness and high efficiency in hoisting and high positioning precision.

Description

TECHNICAL FIELD

[0001] The present application relates to a prefabricated underground silo hoisting system and hoisting method. BACKGROUND

[0002] The silo is mainly used to store bulk materials and is one of the main forms of warehouses. When set underground, it is generally an underground silo. According to the structural material, it can be divided into reinforced concrete silos, steel silos, and masonry silos. According to the structure form, it can be divided into flat warehouses and shallow circular warehouses. The shallow circular warehouse is a cylindrical grain silo, such as the structure disclosed in the patent CN119392994A. It has a high grain layer and a large single warehouse capacity, and the land occupation area is relatively small. However, it has many holes in the warehouse roof, poor heat insulation performance, and fast aging of the surface layer of grain. Compared with the shallow circular warehouse, the flat warehouse has a lower land utilization efficiency, but it has good heat insulation and thermal insulation performance, and high stability of stored grain. The vertical silo is more commonly used in the warehouse field for turnover and processing. The vertical silo is higher than the shallow circular warehouse, has a smaller inner diameter, and is relatively flexible. It is less affected by temperature. In order to further improve the land utilization efficiency, warehouse operators have designed a new type of warehouse - a building warehouse. This warehouse type can fully utilize the upper space and has a high degree of mechanization. The heat insulation effect is relatively good. However, it has high requirements for building structures and relatively high engineering costs. At present, due to environmental protection requirements and labor costs, the degree of mechanization required in the selection of grain warehouses is also higher. Among them, the shallow circular warehouse and the vertical silo are relatively mature warehouse types. From the perspective of cost performance, the single warehouse capacity is very high, which is more suitable for port transportation operations and processing plants. For storage depots, there is a requirement for rotation every year, so the practicality is not strong.

[0003] In order to solve the above problems of warehouse types, starting from the flexibility of warehouse capacity and the high degree of mechanization, the patent CN114651611B discloses a low-temperature grain storage double-wall square silo. The single grain storage unit has a small capacity, which is convenient for rotation and has better adaptability. The overall grain storage capacity is large, and the land utilization efficiency is high. However, as a single grain storage unit, the single warehouse is generally prefabricated. When hoisting each single warehouse into the installation position of the foundation pit or hoisting it out for maintenance or replacement or relocation, there are a series of problems such as inconvenience, complexity, low efficiency, and poor positioning accuracy. How to solve the hoisting problem of the single warehouse is of great significance for the subsequent development of such warehouse types. SUMMARY

[0004] The present application aims to provide a prefabricated underground silo hoisting system and hoisting method. The prefabricated single warehouse can be hoisted into or out of the foundation pit, and the hoisting equipment outside the pit can be connected to the special truss crane in the pit in the air, which has the advantages of convenient and efficient hoisting, high positioning accuracy, etc.

[0005] The technical scheme of the assembled underground silo hoisting system is as follows: The assembled underground silo hoisting system comprises: The truss crane comprises a pair of fixed beams arranged longitudinally in parallel and a pair of movable beams arranged transversely in parallel, the two ends of the movable beams are arranged on the two fixed beams, and the movable beams are driven to move along the length direction of the fixed beams through a first walking mechanism, the truss crane further comprises a square frame lifting appliance arranged on the two movable beams, the square frame lifting appliance is driven to move along the length direction of the movable beams through a second walking mechanism, the square frame lifting appliance is provided with a square hole in the middle for the square silo to pass vertically, the lower part of the square frame lifting appliance is uniformly distributed with at least two telescopic units in the circumferential direction, the telescopic unit comprises a vertically arranged hydraulic cylinder and a lifting plate rotatably arranged at the lower end of the hydraulic cylinder, the outer end of the lifting plate is provided with a bolt hole for being connected with the top of the square silo through a bolt; The automobile crane comprises a lifting rope, the lower part of the lifting rope is at least two branch ropes, the lower end of the branch rope is connected with a lifting ring bolt for being connected with the top of the square silo.

[0006] On the basis of the above scheme, the following improvements are further made, comprising an arm type aerial work platform for sending the operator to the square frame lifting appliance.

[0007] The technical scheme of the assembled underground silo hoisting method is as follows: S1, hoist the square silo into the foundation pit; S11, hoist the square silo to be installed by using the automobile crane outside the foundation pit, the lower part of the lifting rope of the automobile crane is at least divided into two branch ropes, the lower end of each branch rope is connected with a lifting ring bolt, the lifting ring bolts are uniformly screwed on the threaded holes in the upper end of the built-in metal pipe of the square silo, and the square silo is lifted to the square frame lifting appliance of the truss crane; S12, adjust the position of the square silo, make the square silo correspond to the square hole of the square frame lifting appliance, drop the square silo, and make the square silo pass from top to bottom in the square hole until the square silo is completely below the square frame lifting appliance; S13, start each telescopic unit in the lower part of the square frame lifting appliance, when the lifting plate at the lower end of the hydraulic cylinder moves down to be close to the upper surface of the square silo, make the lifting plate rotate to the bolt hole on the lifting plate to be coaxial with a threaded hole in the top of the square silo, stop the hydraulic cylinder when the lifting plate is attached to the upper surface of the square silo, pass the bolt through the bolt hole of the lifting plate from top to bottom and screw it in the threaded hole in the top of the square silo, make the hydraulic cylinder drive the lifting plate to move up a small distance, rotate the lifting ring bolt of the automobile crane from the threaded hole in the top of the square silo, start the automobile crane to move the lifting rope and the lifting ring bolt away, and complete the transfer of the square silo from the automobile crane to the truss crane; S14, start the truss crane, move the square silo to the set position in the foundation pit, start each telescopic unit to synchronously lower the square silo, install the square silo after reaching the position, unscrew the bolts on each lifting plate to reset each telescopic unit after the installation is completed, and complete the hoisting process of the square silo; S2, the square silo is lifted out of the foundation pit; S21, the truss crane is started, the square frame hoist is moved to the top of the square silo to be lifted out, each telescopic unit is lowered to the lower surface of the lifting plate and the upper surface of the square silo, the lifting plate of each telescopic unit is rotated to make the bolt hole on the lifting plate coaxial with a threaded hole on the top of the square silo, the telescopic unit is lowered to the lower surface of the lifting plate and the upper surface of the square silo, the bolt is screwed from top to bottom through the bolt hole of the lifting plate and is screwed in the threaded hole on the top of the square silo, after the connection between the square silo and the foundation pit is removed, each telescopic unit is driven to ascend synchronously to lift the square silo; S22, the lifting rope of the automobile hoist is passed from top to bottom through the square hole of the square frame hoist, until the lifting ring bolt at the lower part of the lifting rope can be smoothly screwed into the threaded hole on the top of the square silo, and each lifting ring bolt is evenly screwed into the corresponding threaded hole; S23, the automobile hoist is started, the lifting rope is tensioned, and the lifting rope is in a stressed state and stops ascending; S24, the bolt between the lifting plate and the square silo is unscrewed, and each telescopic unit is reset; S25, the automobile hoist is started, the lifting rope drives the square silo to continue ascending and passes through the square hole of the square frame hoist from bottom to top, and then the square silo is lifted out of the foundation pit.

[0008] On the basis of the above scheme, further improvement is as follows, the top of the square silo is evenly distributed with threaded holes on the front, back, left and right four sides, the automobile hoist is connected with the threaded holes on the front and back two sides, and the truss crane is connected with the threaded holes on the left and right two sides.

[0009] On the basis of the above scheme, further improvement is as follows, the top of the square silo is evenly distributed with threaded holes on the front, back, left and right four sides, the left and right sides each include two symmetrically arranged threaded holes, the automobile hoist and the truss crane are connected with the threaded holes on the left and right two sides, one of the two threaded holes arranged on the left and right two sides respectively is connected with the automobile hoist, and the other is connected with the truss crane.

[0010] The beneficial effects of the present application: the assembly type underground silo hoisting system and hoisting method of the present application, when in use, through the fixed setting of the truss crane at the foundation pit, the truss crane adopts a pair of parallel and spaced movable beams and the setting of the square frame hoist with square holes on it, so that the square silo can smoothly pass in and out of the square hole of the square silo, and then through the cooperation with the multiple screw holes uniformly distributed on the top of the square silo, the smooth handover is realized, and no matter whether the square silo is hoisted into or out of the foundation pit, the truss crane set on the foundation pit and the automobile crane set outside the foundation pit can realize the handover in the air, without the need to temporarily put down the square silo halfway, so that many processes can be saved, and the operation is simple, convenient, fast and efficient, and because the truss crane is used to move the square silo up and down by the hydraulic cylinder, and the horizontal displacement is realized by the first and second walking mechanisms, compared with the traditional hoisting rope method, the three-way displacement precision of the square silo in the foundation pit is very high, and the installation precision and butt joint precision are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a longitudinal sectional view of the hoisted square silo; Figure 2 is Figure 1 is a local enlarged view of A in the middle; Figure 3 is a top view of the square silo; Figure 4 is a perspective view of the built-in metal pipe; Figure 5 is a top view of the foundation pit; Figure 6 is a top view of the truss crane fixedly set on the foundation pit; Figure 7 is Figure 6 is a local enlarged view of B in the middle; Figure 8 is a state schematic view when the automobile crane carries the square silo through the square hole; Figure 9 is Figure 8 is a local enlarged view of C in the middle; Figure 10 is Figure 8 is a local enlarged view of D in the middle; Figure 11 is a state schematic view before the square frame hoist and the square silo butt joint; Figure 12 is a state schematic view after the square frame hoist and the square silo butt joint and the automobile crane and the square silo are separated; In the figure: 1-square silo, 11-silo body, 12-embedded metal pipe, 121-threaded hole, 122-vent hole, 13-silo top series frame, 14-square funnel, 15-air source pipe, 16-valve, 2-foundation pit, 21-square silo installation point, 3-truss crane, 31-fixed beam, 311-rail, 312-first walking mechanism, 32-movable beam, 33-square frame lifting tool, 331-square perforation, 332-hydraulic cylinder, 333-lifting plate, 3331-bolt hole, 334-bolt, 4-lifting rope of automobile crane, 40-lifting arm of automobile crane, 41-lifting ring bolt. DETAILED DESCRIPTION

[0012] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application, that is, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations.

[0013] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.

[0014] It should be noted that the relational terms such as "first" and "second" and the like are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or equipment including the element.

[0015] The features and performances of the present application are further described in detail below in combination with the embodiments.

[0016] An embodiment of an assembled underground silo hoisting system of the present application: As Figures 1-4As shown, as the object of hoisting, the structure of the square silo 1 is as follows: the square silo 1 as a whole is a rectangular square structure, the cross section is rectangular, the lower part has a square funnel 14, the silo body 11 is made of cement-based foam concrete poured on uniformly arranged steel bars and built-in metal pipes 12, and is precast in the factory, then transported to the installation site for installation. Foam concrete has the characteristics of light weight and good ventilation, not only convenient to hoist, but also can provide built-in metal pipes 12 for ventilation, fumigation or nitrogen charging of materials in the silo. The silo body 11 is reinforced by foam concrete combined with steel bars and built-in metal pipes 12, so that the silo body 11 has good bearing capacity to meet the hoisting requirements, and each square silo 1 is finally installed together, and can bear each other. The silo body 11 is a rectangular deep silo structure with a height-width ratio greater than 3. The characteristics of the rectangular deep silo are: the material load is mainly ring stress, the horizontal steel bars of the silo wall play a control role, and a single silo can meet the load requirements (similar to a container, it can also realize hoisting after a single silo is filled with food and other materials), which is different from other concrete structures that must require the structure and foundation to be assembled before the function can be realized. The square plane feature can facilitate flexible and variable plane assembly, and the combined silos can bear stress. (Round and other polygons have higher requirements for combination). The silo body 11 requires cement-based foam concrete combined with steel bars and built-in metal pipes 12 to ensure sufficient strength to withstand the load of bulk materials during use and the hoisting load during construction, etc.; by using the high porosity characteristics of foam concrete, it can be combined with built-in metal pipes 12 to realize the needs of ventilation, fumigation, nitrogen charging and other functions. The built-in metal pipe 12 is made of stainless steel and is covered with multiple holes, which is combined with the foam concrete of the silo body 11 to facilitate the realization of the needs of ventilation, fumigation, nitrogen charging and other functions. The built-in metal pipe 12 has threaded holes 121 at the upper and lower ends, the lower threaded holes 121 are mainly connected with functional pipes, and the upper threaded holes 121 are mainly convenient for construction hoisting or maintenance hoisting.

[0017] The built-in metal pipe 12 is a conical pipe structure with a small upper end and a large lower end. Threaded holes 121 are arranged at the upper and lower ends of the built-in metal pipe 12. The outer periphery of the two sections where the threaded holes 121 are arranged is not provided with air holes 122. That is, the air holes 122 are only distributed in the area between the upper and lower threaded holes 121 of the built-in metal pipe 12, so as not to affect the connection strength of the threads. The built-in metal pipe 12 has the following effects. Firstly, due to the conical structure with a small upper end and a large lower end, when the built-in metal pipe 12 is connected by threads in the vertical direction, the conical surface can be used to bear the vertical load of the silo body 11. That is, the conical surface has a part of the vertical bearing capacity, thereby improving the overall hoisting strength. When the built-in metal pipe 12 is hoisted, the force can be transmitted to the entire silo body 11, and the stress is more reasonable. Secondly, when the gas flow is introduced into the built-in metal pipe 12 through the gas source pipe 15 connected to the lower end of the built-in metal pipe 12 for ventilation, fumigation or nitrogen charging, the gas pressure will decrease from bottom to top inside the built-in metal pipe 12, which will cause the influence effect of the gas flow to be uneven. However, the built-in metal pipe 12 has a conical structure, which can compensate for the gas pressure by using the characteristic that the smaller the inner diameter of the built-in metal pipe 12, the greater the gas pressure. In this way, the gas pressure at different positions in the built-in metal pipe 12 is basically the same, thereby ensuring the uniformity of ventilation, fumigation or nitrogen charging. Thirdly, the lower the position in the square silo 1, the greater the pressure on the inner wall of the square silo 1 caused by the material such as grain in the square silo 1. The built-in metal pipe 12 is thicker, and accordingly has a larger contact area and higher bending strength, that is, has higher bearing capacity. The gradually increasing bearing capacity of the built-in metal pipe 12 from top to bottom is matched with the gradually increasing material pressure of the square silo 1 from top to bottom.

[0018] When the square silo 1 is prefabricated in a factory, when the foam concrete is poured outside the built-in metal pipe 12, in order to prevent the problem that the concrete flows into the built-in metal pipe 12 through the air holes 122 of the built-in metal pipe 12 and causes the air holes 122 to be blocked, a solid filler such as paraffin that melts easily when heated is filled in the air holes 122 of the built-in metal pipe 12 before pouring. After pouring is completed, the paraffin is heated and flowed out, thereby preventing the concrete from blocking the built-in metal pipe 12 during pouring.

[0019] The square funnel 14 is a bulk material discharge funnel, which can be made of concrete or steel structure material. The square funnel 14 can be designed as an integrated type which is prefabricated in a factory, or a split type which is completed in advance and can be disassembled at any time. For example, the square funnel 14 is connected to the built-in metal pipe 12 through the threaded holes 121 at the lower end of the built-in metal pipe 12, and is sealed and connected by filling the gap with sealing glue. The gas source pipe 15 is a common ventilation pipe, which can be made of metal or plastic material. The gas source pipe 15 is connected to the lower end of each built-in metal pipe 12 by threads or other structures. The connection between the two is preferably achieved by a quick plug connector, which is connected after installation and is quickly disassembled during maintenance. The other end of the gas source pipe 15 can be connected to a gas source generating device, such as a gas cylinder storing nitrogen.

[0020] AsFigure 5 、 8 As shown, the prefabricated square silo 1 needs to be hoisted in a pre-built foundation pit 2. The foundation pit 2 is a square underground storage pit with multiple square silo installation points 21 evenly arranged therein. Each square silo installation point 21 can be installed with a Figure 1 The square silo 1 shown, that is, each square silo 1 is a storage unit, and the storage units can be densely arranged or spaced apart in the foundation pit 2, and the arrangement method is flexible and changeable.

[0021] like Figure 1 、 2 As shown, the top of each square silo 1 is provided with a silo roof series frame 13 that is consistent with the inner and outer dimensions of the silo body 11. The silo roof series frame 13 is welded from metal beams, and is provided with perforations corresponding to the internal metal tubes 12 of the square silo 1. The diameter of the perforations is consistent with the outer diameter of the corresponding internal metal tubes 12. The upper ends of the internal metal tubes 12 pass through the perforations, and the outer surfaces of the internal metal tubes 12 and the perforations of the silo roof series frame 13 can be welded and fixed, so that each internal metal tube 12 is connected to the silo roof series frame 13 as a whole, so as to drive each internal metal tube 12 to bear the load together. When some internal metal tubes 12 are hoisted and subjected to force, the force can be transmitted to the silo roof series frame 13 through the connection with the silo roof series frame 13, and the silo roof series frame 13 then transmits the force to the remaining internal metal tubes 12, and each internal metal tube 12 itself can bear the weight of the silo body 11, so that an overall frame-type integrated load-bearing structure is realized, which has stronger integrity and stronger load-bearing capacity. In other embodiments, each perforation of the silo top serial frame 13 can be designed as a tapered hole structure with a smaller top and a larger bottom, and the taper is consistent with the taper of the outer surface of the corresponding built-in metal tube 12. The two can have better load-bearing capacity by matching the tapered surfaces.

[0022] In order to match the special structure of the square silo 1 and meet the requirements of fast, efficient and accurate lifting, the following lifting system is adopted: Figure 6 、 8 As shown, the truss crane 3 includes a pair of fixed beams 31 arranged in parallel in the longitudinal direction and a pair of movable beams 32 arranged in parallel in the transverse direction. The two fixed beams 31 are symmetrically erected on the left and right sides of the pit edge of the foundation pit 2, and a corresponding bearing structure for distributing the pressure is provided. The two ends of the movable beam 32 are erected on the two fixed beams 31 and are driven by the first walking mechanism 312 to move along the length direction of the fixed beams 31, as shown in FIG. Figure 10 As shown, the first traveling mechanism 312 includes two parallel tracks 311 disposed on a fixed beam 31, wheels rolling on the parallel tracks 311, and a drive mechanism, a transmission mechanism, a support frame, and other structures. The structure of the first traveling mechanism 312 is conventional and will not be described in detail here. Similarly, the subsequent second traveling mechanism also adopts a structure substantially similar to the first traveling mechanism and will not be described in detail here.

[0023] As shown in Figures 6-8 , a square frame hoist 33 is arranged on the two movable beams 32, that is, the front and rear sides of the square frame hoist 33 are arranged on the two movable beams 32, the square frame hoist 33 is driven to move along the length direction of the movable beam 32 by the second walking mechanism, the square frame hoist 33 has a square hole 331 in the middle for the square silo 1 to vertically pass through, the size of the square hole 331 is slightly larger than the outer diameter of the square silo 1, so that the square silo 1 can pass through smoothly, and the lower part of the square frame hoist 33 is uniformly distributed with at least two telescopic units in the circumferential direction, the telescopic unit includes a vertically arranged hydraulic cylinder 332 and a lifting plate 333 rotatably arranged at the lower end of the hydraulic cylinder 332, the outer end of the lifting plate 333 is provided with a bolt hole 3331, so as to be connected with the top of the square silo 1 by a bolt 334. The lifting plate 333 is made of thick steel plate and needs to have high carrying capacity.

[0024] The automobile hoist is arranged outside the foundation pit 2 and is mainly used for hoisting the square silo 1 into or out of the foundation pit 2, and needs to realize the transfer of the square silo 1 between the automobile hoist and the gantry crane 3 in the air. The structure is the prior art and mainly includes a lifting arm and a lifting rope. The lower part of the lifting rope is at least two branch ropes, the lower end of the branch rope is connected with a lifting ring bolt 41 for threadedly connecting with the top of the square silo 1.

[0025] The arm type aerial work platform is mainly used for transporting the operating personnel to the vicinity of the square frame hoist 33, so as to facilitate the rotation of the lifting plate 333, the screwing or unscrewing of the bolt 334 and the lifting ring bolt 41 and other operations when the square silo 1 is transferred between the gantry crane and the automobile hoist.

[0026] The specific hoisting method is as follows: S1, hoist the square silo 1 into the foundation pit 2: S11, hoist the square silo 1 to be installed by the automobile hoist outside the foundation pit 2, as shown in Figure 8 , 9 , the lower part of the lifting rope of the automobile hoist is divided into at least two branch ropes, the lower end of each branch rope is connected with a lifting ring bolt 41, each lifting ring bolt 41 is uniformly screwed in the threaded hole 121 at the upper end of the built-in metal pipe 12 of the square silo 1, and the square silo 1 is lifted to the square frame hoist 33 directly above the gantry crane 3; S12, adjust the position of the square silo 1, so that the square silo 1 corresponds to the square hole 331 of the square frame hoist 33, drop the square silo 1, and make the square silo 1 pass through the square hole 331 from top to bottom, until the square silo 1 is completely below the square frame hoist 33, as shown in Figure 11 ; S13, as shown in Figure 11 , 12As shown, the starting block hoist 33 of each telescopic unit, when the lower end of the hydraulic cylinder 332 is lowered to the upper surface of the square silo 1, the lifting plate 333 is rotated to the bolt hole 3331 on the lifting plate 333 and the threaded hole 121 on the top of the square silo 1 is coaxial, when the lifting plate 333 is attached to the upper surface of the square silo 1, the hydraulic cylinder 332 is stopped, the bolt 334 is screwed into the threaded hole 121 on the top of the square silo 1 from top to bottom through the bolt hole 3331 of the lifting plate 333, the hydraulic cylinder 332 is driven to move the lifting plate 333 up a small distance, the lifting ring bolt 41 of the automobile crane is rotated out of the threaded hole 121 on the top of the square silo 1, the automobile crane is started to move the lifting rope and the lifting ring bolt 41 away, and the transfer of the square silo 1 from the automobile crane to the gantry crane 3 is completed; S14, start the gantry crane 3, move the square silo 1 to the designated position in the foundation pit 2, start each telescopic unit to lower the square silo 1 synchronously, install and fix the square silo 1 after reaching the position, unscrew the bolts 334 on each lifting plate 333 after installation is completed, reset each telescopic unit, reset the gantry crane 3, and complete the hoisting process of the square silo 1.

[0027] S2, hoist the square silo 1 out of the foundation pit 2: S21, start the gantry crane 3, move the square frame hoist 33 to the top of the square silo 1 to be hoisted out, lower each telescopic unit until the lower surface of the lifting plate 333 is close to the upper surface of the square silo 1, rotate the lifting plate 333 of each telescopic unit to make the bolt hole 3331 on the lifting plate 333 coaxial with the threaded hole 121 on the top of the square silo 1, lower the telescopic unit until the lower surface of the lifting plate 333 is attached to the upper surface of the square silo 1, pass the bolt 334 through the bolt hole 3331 of the lifting plate 333 from top to bottom and screw it into the threaded hole 121 on the top of the square silo 1, after removing the connection between the square silo 1 and the foundation pit 2, drive each telescopic unit to hoist the square silo 1 synchronously; S22, pass the lifting rope of the automobile crane through the square hole 331 of the square frame hoist 33 from top to bottom, until the lifting ring bolt 41 at the lower part of the lifting rope can be smoothly screwed into the threaded hole 121 on the top of the square silo 1, and each lifting ring bolt 41 is evenly screwed into the corresponding threaded hole 121; S23, start the automobile crane, tighten the lifting rope, and make the lifting rope in a stressed state, and the lifting rope stops ascending; S24, unscrew the bolts 334 between the lifting plate 333 and the square silo 1, and reset each telescopic unit; S25, start the automobile crane, make the lifting rope drive the square silo 1 continue to ascend and pass through the square hole 331 of the square frame hoist 33 from bottom to top, and then hoist the square silo 1 out of the foundation pit 2.

[0028] As Figure 7As shown, in the embodiment, two threaded holes 121 are symmetrically distributed on the front, rear, left and right sides of the top of the square silo 1, the automobile crane is connected with the threaded holes 121 on the front and rear sides, and the truss crane 3 is connected with the threaded holes 121 on the left and right sides. The top of the square silo 1 is provided with threaded holes 121 on the front, rear, left and right sides, and the left and right sides each include two symmetrically arranged threaded holes 121, the automobile crane and the truss crane 3 are connected with the threaded holes 121 on the left and right sides, and one of the two threaded holes 121 arranged on the left and right sides is connected with the automobile crane, and the other is connected with the truss crane 3.

[0029] As shown, Figure 5 Each square silo 1 is hoisted on the corresponding square silo mounting point 21 in the foundation pit 2, and the outermost square silo 1 can be used as the outer wall of the lattice type warehouse group, at this time, the side of the square silo 1 in contact with the foundation pit 2 needs to be treated as follows, first, waterproofing, a waterproof coating can be provided, such as LEAC acrylic polymer cement waterproof coating, and waterproof filler needs to be provided at the joint between adjacent square silos 1 before coating the waterproof coating, in addition, the outermost square silo 1 also needs to be treated for metal structure corrosion prevention, concrete structure corrosion prevention, etc., and a water guide groove needs to be provided at the bottom, and freeze-thaw protection and chemical corrosion protection, etc.

[0030] The above is only a preferred embodiment of the present application, and is not used to limit the present application, the patent protection scope of the present application is subject to the claims, any equivalent structural changes made by applying the contents of the specification and drawings of the present application should also be included in the protection scope of the present application.

Claims

1. The assembled underground silo hoisting system is characterized by: include: A truss crane comprises a pair of longitudinally parallel fixed beams and a pair of transversely parallel movable beams, the ends of the movable beams being mounted on the two fixed beams and being driven by a first traveling mechanism to move along the length direction of the fixed beams. The truss crane also comprises a square frame spreader mounted on the two movable beams and being driven by a second traveling mechanism to move along the length direction of the movable beams. The square frame spreader has a square through-hole in the middle for vertically passing a square silo. The lower part of the square frame spreader has at least two telescopic units uniformly distributed along the circumference. The telescopic units include a vertically mounted hydraulic cylinder and a hanging plate rotatably mounted on the lower end of the hydraulic cylinder. The outer end of the hanging plate is provided with a bolt hole for connecting to the top of the square silo via bolts. The automobile crane comprises a lifting rope, the lower part of which is divided into at least two branch ropes, and the lower ends of the branch ropes are connected with lifting eye bolts for connecting with the top of the square silo.

2. The assembled underground silo hoisting system according to claim 1, characterized in that: Includes a boom lift to get operators to the frame spreader.

3. The hoisting method using the assembled underground silo hoisting system according to claim 1 or 2 is characterized in that: The following steps are involved: S1. The square silo is hoisted into the foundation pit; S11. Use a truck crane to lift the silo to be installed outside the foundation pit. The lower part of the truck crane's lifting rope is divided into at least two branch ropes. Connect the lower end of each branch rope to an eyebolt. Evenly screw each eyebolt into the threaded hole at the upper end of the silo's internal metal tube. Lift the silo to the position directly above the frame lifting device of the truss crane. S12, adjusting the position of the square silo so that the square silo corresponds to the square through-hole of the square frame spreader, lowering the square silo so that the square silo passes through the square through-hole from top to bottom until the square silo is completely located below the square frame spreader; S13. Activate the telescopic units at the bottom of the frame spreader. When the hanging plate at the lower end of the hydraulic cylinder moves down close to the upper surface of the silo, rotate the hanging plate until the bolt hole on the hanging plate is coaxial with a threaded hole on the top of the silo. When the hanging plate is in contact with the upper surface of the silo, stop the hydraulic cylinder. Pass a bolt through the bolt hole of the hanging plate from top to bottom and screw it into the threaded hole on the top of the silo. The hydraulic cylinder drives the hanging plate up a short distance. Unscrew the eyebolt of the truck crane from the threaded hole on the top of the silo. Start the truck crane to remove the lifting rope and eyebolt, completing the transfer of the silo from the truck crane to the truss crane. S14: Start the truss crane to move the silo to the set position in the foundation pit, start each telescopic unit to synchronously lower the silo, install and fix the silo after it is in place, and after installation, unscrew the bolts on each hanging plate to reset each telescopic unit, completing the silo hoisting process; S2. The square silo is hoisted out of the foundation pit; S21. Start the truss crane to move the frame hoist to the top of the silo to be lifted out. Lower each telescopic unit until the lower surface of its hanging plate is close to the upper surface of the silo. Rotate the hanging plate of each telescopic unit so that the bolt hole on the hanging plate is coaxial with a threaded hole on the top of the silo. Lower the telescopic unit until the lower surface of the hanging plate is in contact with the upper surface of the silo. Pass the bolt through the bolt hole of the hanging plate from top to bottom and screw it into the threaded hole on the top of the silo. After removing the connection between the silo and the foundation pit, drive each telescopic unit upward synchronously to lift the silo. S22. Pass the lifting rope of the truck crane through the square holes of the square frame spreader from top to bottom until the eyebolts at the bottom of the lifting rope can be smoothly screwed into the threaded holes on the top of the square silo. Evenly screw the eyebolts into the corresponding threaded holes. S23, start the mobile crane, tighten the lifting rope, put the lifting rope in a stressed state, and stop the lifting rope from moving upward; S24. Unscrew the bolts between the hanging plate and the square silo to reset each telescopic unit; S25. Start the truck crane, so that the lifting rope drives the square silo to continue to move upward and pass through the square holes of the square frame lifting device from bottom to top, and then lift the square silo out of the foundation pit.

4. The hoisting method according to claim 3, characterized in that: The four sides of the top of the square silo are evenly distributed with threaded holes. The truck crane is connected to the threaded holes on the front and rear sides, and the truss crane is connected to the threaded holes on the left and right sides.

5. The hoisting method according to claim 3, characterized in that: The four sides of the top of the square silo are evenly distributed with threaded holes. The left and right sides each include two symmetrically arranged threaded holes. The car crane and truss crane are connected to the threaded holes on the left and right sides. One of the two threaded holes set on the left and right sides is connected to the car crane and the other is connected to the truss crane.

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