High-efficiency silo system and method for large-size aggregate low-slump concrete

Abstract

The present invention discloses an efficient silo system and method for large-size aggregate low-slump concrete, belonging to the technical field of concrete pouring. The present invention comprises an upper silo conveying unit and a lower silo conveying unit respectively arranged symmetrically at the upper silo position and the lower silo position of the main body of the ship lock hub, wherein the upper silo conveying unit and the lower silo conveying unit each comprise a main conveying line and three branches, wherein the main conveying line is composed of six-stage belt conveyors connected end to end in the longitudinal direction, three branches are arranged at intervals at the rear position of the outer side of the main conveying line, each branch is composed of a belt conveyor, and two-stage distribution mechanisms are arranged on one side corresponding to each branch, each stage of the distribution mechanism is composed of three distribution mechanisms arranged at intervals. The present invention improves the silo efficiency of large-size aggregate and low-slump concrete, ensures the quality of large-volume concrete during pouring, shortens the construction period, and reduces costs.

Description

Technical Field

[0001] The invention relates to the technical field of concrete pouring, and in particular to an efficient silo system and method suitable for large-diameter aggregate low-slump concrete. Background Art

[0002] In order to ensure the construction quality of large-scale concrete projects, key projects generally use low-slump, large-size aggregate concrete for construction. Low slump and large aggregate size can easily cause equipment pump blockage, which has an adverse effect on the efficiency of on-site concrete pouring. Generally speaking, aggregates with a particle size of more than 80mm are called large particles, and slumps of less than 10cm are called low slumps. The lower the slump, the greater the viscosity of the concrete, and the easier it is to cause clogging of the silo equipment. Traditional concrete tank trucks are extremely impractical for large-size aggregate low-slump concrete, and the silo entry method of lifting horizontal tanks by crane is inefficient.

[0003] On the one hand, low silo efficiency will cause loss of concrete slump, that is, the longer the transportation distance and time of the concrete mixer truck, the more the concrete clinker will lose slump over time due to chemical reactions, water evaporation, aggregate water absorption and other reasons; on the other hand, it will also cause aggregate separation, affecting the quality of concrete.

[0004] Therefore, the focus of concrete construction is to improve the efficiency of placing large-size aggregate and low-slump concrete into warehouses and realize the rapid and continuous placing of large-volume concrete into warehouses, thereby ensuring the pouring quality of large-size aggregate and low-slump concrete, shortening the construction period and reducing construction costs. Summary of the invention

[0005] The purpose of the present invention is to provide a scientific and reasonable structural design, improve the efficiency of large-size aggregate and low-slump concrete entering the warehouse, ensure the quality of large-volume concrete during pouring, shorten the construction period, reduce costs, and be easy to implement. It is suitable for a large-scale ship lock main body concrete project. The efficient warehouse entry system and method for large-size aggregate and low-slump concrete is easy to implement.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: an efficient silo system suitable for large-size aggregate low-slump concrete, comprising an upper gate conveying unit and a lower gate conveying unit symmetrically arranged at the upper gate position and the lower gate position of the lock hub body, respectively, the upper gate conveying unit and the lower gate conveying unit each comprising a main conveying line and three branches, the main conveying line is composed of six-stage belt conveyors connected at different heights in the longitudinal direction, three branches are arranged at intervals at the rear position of the outer side of the main conveying line, each branch is composed of a belt conveyor, and two-stage distribution mechanisms are arranged on the side corresponding to each branch, and each stage of the distribution mechanism is composed of three distribution mechanisms arranged at intervals.

[0007] Preferably, the belt conveyor includes a belt conveyor column, a belt conveyor body, a protective cover mounting frame and a protective cover, the belt conveyor body is installed on the upper part of the belt conveyor column, and protective cover mounting frames are arranged on both sides of the belt conveyor body along its length direction, a protective cover is laid on the top of the protective cover mounting frame, and the protective cover includes a rock wool board with a broken line cross-section, and a ridge tile is arranged at the top corner of the rock wool board.

[0008] Preferably, the material placing boom comprises a material placing boom column and a rotary material placing boom body arranged on the material placing boom column, and the material placing boom column is a three-stage lifting column.

[0009] Preferably, the main conveying line also includes a buffer tube group, and a buffer tube group extending downward is arranged below the tail end discharge port of the fourth, fifth and sixth stage belt conveyors, and the buffer tube group includes a buffer tube, and the buffer tube includes an upper straight tube section, a diamond buffer section and a lower straight tube section, and the diamond buffer section is composed of two branch tubes butted end to end, and the upper straight tube section is connected to the upper part of the diamond buffer section, and the lower straight tube section is connected to the lower part of the diamond buffer section.

[0010] Preferably, the buffer tube group also includes a connecting tube, and a connecting tube is integrally provided at the lower end of the connecting tube, and the connecting tube and the upper straight tube section of the buffer tube are telescopically connected, and at the same time, an outer tube is rotatably connected to the outer side of the upper end of the upper straight tube section of the buffer tube, and a first spring is connected between the outer tube and the outer side of the connecting tube.

[0011] Preferably, a spiral guide groove is formed on the outer wall of the connecting tube, and a ball is embedded in the inner wall of the upper straight section of the buffer tube, and the ball rolls along the guide groove during the lifting and lowering of the buffer tube to drive the buffer tube to rotate synchronously during the lifting and lowering process.

[0012] Preferably, a second rubber bag is fixedly bonded above the outer partition of the connecting tube, and a first rubber bag is fixedly bonded to the upper end of the second rubber bag, and the upper end of the first rubber bag is fixedly bonded to the inner wall of the upper end of the outer tube, and the first rubber bag and the second rubber bag are both arranged in an annular structure, and the first rubber bag and the second rubber bag are squeezed during the lifting and lowering adjustment of the connecting tube and the outer tube, and an elastic rubber bag with an annular structure is embedded and installed on the inner side of the connecting tube, the elastic rubber bag and the first rubber bag are connected through a pipeline, and the elastic rubber bag is inflated to achieve the blocking of the tube hole of the connecting tube.

[0013] Preferably, the lower end of the second rubber bag is connected to an exhaust pipe, and an annular baffle is fixedly provided on the inner side of the exhaust pipe, and a truncated cone-shaped sealing plug is sealed in the hole of the annular baffle, and the sealing plug and the annular baffle are elastically connected by a second spring, the pipe mouth of the exhaust pipe faces the inner side of the connecting pipe, and the high-pressure gas discharged from the exhaust pipe is used to clear the blockage in the buffer pipe, and the outer side of the second rubber bag is also connected to a one-way air intake pipe.

[0014] Preferably, a vibration hole is opened at the bottom of the rhombus opening of the rhombus buffer section of the buffer tube, and a vibrating rod is connected to the ball in the vibration hole, and a third spring is connected between the vibrating rod and the rhombus buffer section. At the same time, the outer side of the lower end of the rhombus buffer section of the buffer tube is elastically rotatably connected to a rotating ring through a frame, and a cable is wound around the outer side of the rotating ring, and the upper end of the cable is fixedly connected to the upper end of the connecting tube, and the other end of the cable passes through the rotating ring and is fixedly connected to the outer side of the upper end of the vibrating rod, and a pressure sensor is provided at the end of the vibrating rod.

[0015] An efficient siloing method for large-size aggregate and low-slump concrete includes the following steps:

[0016] Step 1: According to the actual working conditions, obtain the concrete demand of each pouring point, match the route of the belt conveyor in the main conveying line and branch line, the layout area of ​​the concrete placing machine head, and the construction scope;

[0017] Step 2: According to the specific conditions of the construction area, set the conveying level of the belt conveyor to ensure that the distance between the pouring point and the feed port of the feeder is the shortest and the level is the least; for example, the conveying route of the upper gate head needs to choose a route that does not affect the construction area of ​​the spillway, and the location of the feeder needs to be selected at the location with the largest horizontal coverage area.

[0018] Step 3: The concrete placing machine can adjust the concrete placing range by telescoping and rotating according to the size of the concrete bin surface, and can meet the requirements of continuous and uniform pouring of 3-graded normal concrete within a horizontal radius of 25m.

[0019] Step 4: The belt conveyor feeding system is set with a heightening function, which can realize graded heightening according to the height of the pouring bin surface. The heightening height of each level is 15m, and the maximum pouring height is 60m.

[0020] Step 5: The belt conveyor material distribution system is equipped with an automated electrical device to achieve stable operation of the belt conveyor in the system. At the same time, high-frequency cameras are installed at the concrete delivery end of the belt conveyor and the material distribution machine discharge port to take high-definition photos of the conveying form and state of the concrete conveyed by the belt conveyor, thereby evaluating the loss and quality of the concrete during the conveying process of the belt conveyor.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. This method can improve the efficiency of concrete storage, shorten the distance of concrete transportation, and improve the efficiency of concrete transportation; reduce the investment cost of personnel and mechanical equipment; improve the quality of concrete construction, that is, reduce the slump loss of concrete and the water loss of concrete, thereby improving the quality of concrete vibration; this storage method has a low demand for the construction site area, and the site can be freed up to organize other construction, which is green, low-carbon, energy-saving and environmentally friendly;

[0023] 2. The present invention can effectively buffer and convey concrete materials in pipelines in high-drop material conveying environments by setting buffer pipes, thereby preventing the falling speed from being too fast and affecting the subsequent normal conveying of materials. In addition, the present invention can automatically clear blockages in multiple ways while ensuring the buffering of materials, thereby preventing blockage of pipes and affecting the normal conveying of concrete materials.

[0024] 3. The present invention is scientifically and reasonably designed, has the advantages of improving the efficiency of three-graded low-slump concrete entering the warehouse, ensuring the slump of the three-graded concrete during pouring, and being easy to implement. It is a highly innovative three-graded low-slump concrete efficient warehouse entry method suitable for lock hub projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the first installation of the conveying unit of the present invention;

[0026] Figure 2 This is a schematic diagram of the final installation of the conveying unit of the present invention;

[0027] Figure 3 This is a schematic diagram of the first installation of the material placing machine of the present invention;

[0028] Figure 4 This is a schematic diagram of the first lifting of the material placing machine of the present invention;

[0029] Figure 5 This is a schematic diagram of the secondary lifting of the material placing machine of the present invention;

[0030] Figure 6 This is a schematic diagram of the three-time lifting of the material placing machine of the present invention;

[0031] Figure 7 It is a schematic diagram of the installation structure of the belt conveyor body and the protective cover mounting frame of the present invention;

[0032] Figure 8 This is a schematic diagram of the installation structure of the buffer tube group of the present invention;

[0033] Fig. 9 This is a schematic diagram of the main structure of the buffer tube assembly of the present invention;

[0034] Fig.10 This is a schematic diagram of the main cross-sectional structure of the buffer tube assembly of the present invention;

[0035] Fig.11 It is a schematic diagram of the cross-sectional structure of the connecting pipe and the outer pipe of the present invention;

[0036] Fig.12 This is a schematic diagram of the connection structure of the connecting pipe and the connecting pipe of the present invention;

[0037] Fig.13 is a schematic cross-sectional structural diagram of a second rubber bag of the present invention;

[0038] Fig.14 For the present invention Fig.13 The enlarged structural diagram at A in the middle;

[0039] Fig.15 This is a schematic diagram of the installation structure of the rotating ring of the present invention;

[0040] Fig.16 This is a schematic diagram of the installation structure of the vibrating rod of the present invention;

[0041] Fig.17 It is a casting process flow chart of the present invention.

[0042] In the figure: 1. belt conveyor; 101. belt conveyor column; 102. belt conveyor body; 103. protective cover mounting frame; 104. protective cover; 2. material distribution machine; 201. material distribution machine column; 202. rotary material distribution machine body; 3. buffer tube group; 301. connecting tube; 302. connecting tube; 303. buffer tube; 304. outer tube; 305. first spring; 306. guide groove; 307. ball; 308. first rubber bag; 309. elastic rubber bag; 310. second rubber bag; 311. exhaust pipe; 312. annular partition; 313. sealing plug; 314. second spring; 315. one-way air inlet pipe; 316. vibrating rod; 317. third spring; 318. rotating ring; 319. cable. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Example 1: Please refer to Figure 1-Figure 8 and Fig.17 As shown, in the prior art, concrete tank trucks are extremely ineffective for handling large-size aggregate and low-slump concrete, while the method of hoisting a horizontal tank into a warehouse using a crane is inefficient.

[0045] On the one hand, low storage efficiency will cause the loss of concrete slump, that is, the longer the transportation distance and time of the concrete mixer truck are, the more the concrete clinker will lose its slump over time due to chemical reactions, water evaporation, aggregate water absorption and other reasons; on the other hand, it will also cause aggregate separation, affecting the quality of concrete. In order to solve this technical problem, this embodiment discloses the following technical content;

[0046] An efficient storage system for large-size aggregate and low-slump concrete, comprising an upper gate conveying unit and a lower gate conveying unit respectively arranged symmetrically at the upper gate position and the lower gate position of the main body of the lock hub, wherein the upper gate conveying unit and the lower gate conveying unit each comprise a main conveying line and three branches, wherein the main conveying line is composed of six-stage belt conveyors 1 connected end to end in the longitudinal direction, and three branches are arranged at intervals at the rear position of the outer side of the main conveying line, each branch being composed of a belt conveyor 1, and two-stage material placing mechanisms are arranged on one side corresponding to each branch, and each stage of the material placing mechanism is composed of three material placing machines 2 arranged at intervals;

[0047] The belt conveyor 1 includes a belt conveyor column 101, a belt conveyor body 102, a protective cover mounting frame 103 and a protective cover 104. The belt conveyor body 102 is installed on the upper part of the belt conveyor column 101, and protective cover mounting frames 103 are arranged on both sides of the belt conveyor body 102 along its length direction. The protective cover 104 is laid on the top of the protective cover mounting frame 103, and the protective cover 104 includes a rock wool board with a broken line cross-section, and a ridge tile is arranged at the top corner of the rock wool board.

[0048] The material placing boom 2 comprises a material placing boom column 201 and a rotary material placing boom body 202 arranged on the material placing boom column 201, and the material placing boom column 201 is a three-stage lifting column.

[0049] An efficient siloing method for large-size aggregate and low-slump concrete includes the following steps:

[0050] Step 1: According to the actual working conditions, obtain the concrete demand of each pouring point, match the route of the belt conveyor 1 in the main conveying line and the branch line, the head layout area of ​​the concrete placing machine 2, and the construction scope;

[0051] Step 2, according to the specific conditions of the construction area, set the conveying level of belt conveyor 1 to ensure that the distance between the pouring point and the feeding port of concrete placing machine 2 is the shortest and the level is the least; for example, the conveying route of the upper gate head needs to choose a route that does not affect the construction area of ​​the spillway, and the location of concrete placing machine 2 needs to choose the location with the largest horizontal coverage area.

[0052] Step 3, the concrete placing machine 2 can adjust the concrete placing range by telescoping and rotating according to the size of the concrete bin surface, and can meet the requirements of continuous and uniform pouring of 3-graded normal concrete within a horizontal radius of 25m;

[0053] Step 4: The belt conveyor feeding system is set with a heightening function, which can realize graded heightening according to the height of the pouring bin surface. The heightening height of each level is 15m, and the maximum pouring height is 60m.

[0054] Step 5: The belt conveyor material distribution system is equipped with an automated electrical device to achieve stable operation of the belt conveyor in the system. At the same time, high-frequency cameras are respectively installed at the concrete delivery end of the belt conveyor 1 and the discharge port of the distribution machine 2 to take high-definition photos of the conveying form and state of the concrete conveyed by the belt conveyor 1, thereby evaluating the loss and quality of the concrete during the conveying process of the belt conveyor 1.

[0055] The pouring area is divided into the upper gate head and the lower gate head. According to the main pouring points, two concrete transportation routes are set up. After the concrete truck pours the concrete into the hopper, it is transported to the pouring point step by step through the belt conveyor 1. The pouring point is equipped with a placing machine 2. The placing machine 2 can adjust the distribution range by telescoping and rotating according to the size of the concrete bin surface. It can meet the continuous and uniform pouring and distribution of 1 to 4 graded normal concrete in an area with a radius of 25m and a height of 15m. After the concrete pouring in the 15m height area is completed, the placing machine column 201 is raised and continued to be used until the maximum pouring height of 60m is reached.

[0056] The main transmission lines include:

[0057] Upper gate: one main conveying line, three branches, a total of 9 belt conveyors 1, and 6 placing machines 2.

[0058] Lower gate: one main conveying line, three branches, a total of 9 belt conveyors 1, and 6 placing machines 2.

[0059] The pouring process of the upper and lower gates is to arrange a concrete conveyor line for each. The total length of the conveyor line is 364 meters, of which the main line is 314 meters long and consists of 6 belt conveyors 1. The maximum span of belt conveyor 1 is 49.5 meters. In order to ensure that the distribution range of the concrete placing machine 2 can cover the entire gate area and reduce the number of belt conveyors 1, the concrete placing machine 2 adopts a two-stage arrangement. Concrete is transported to the first-level concrete placing machine 2 through the belt conveyor 1. The first-level concrete placing machine 2 uses a cantilever to feed to the second-level concrete placing machine 2, so that the distribution range covers the entire gate;

[0060] The installation height of belt conveyor 1 is generally divided into one installation and one lifting. Belt conveyor 1 is first installed to the specified height of 40m and then lifted once to the designed height of 68m.

[0061] The installation height of the concrete placing boom 2 is generally divided into one installation and three liftings. The concrete placing boom 2 is installed to the designated height of 15m for the first time, and then lifted by 15m in two subsequent lifts, and the last lift to the designed height of 58m.

[0062] Embodiment 2: The technical content disclosed in this embodiment is a further improvement on the above embodiment 1. Although the existing concrete silo system is provided with a buffer mechanism to buffer the high drop conveying materials, the buffer mechanism lacks a certain anti-blocking structure, which makes it easy for the materials to accumulate and block the pipeline after buffering and deceleration. In order to further solve this technical problem, this embodiment discloses the following technical content, such as Figure 9-Figure 16 As shown;

[0063] The main conveying line also includes a buffer tube group 3. A buffer tube group 3 extending downward is provided below the tail end discharge port of the fourth-stage, fifth-stage and sixth-stage belt conveyors 1. The buffer tube group 3 includes a buffer tube 303. The buffer tube 303 includes an upper straight tube section, a rhombus-shaped buffer section and a lower straight tube section. The rhombus-shaped buffer section is composed of two supporting tubes that are connected to each other end to end. The upper part of the rhombus-shaped buffer section is connected to the upper part of the rhombus-shaped buffer section, and the lower part of the rhombus-shaped buffer section is connected to the lower part of the rhombus-shaped buffer section.

[0064] The buffer tube group 3 also includes a connecting tube 301, and a connecting tube 302 is integrally provided at the lower end of the connecting tube 301, and the connecting tube 302 and the upper straight tube section of the buffer tube 303 are telescopically connected, and at the same time, the outer side of the upper end of the upper straight tube section of the buffer tube 303 is rotatably connected to an outer tube 304, and a first spring 305 is connected between the outer tube 304 and the outer side of the connecting tube 301;

[0065] A spiral guide groove 306 is formed on the outer wall of the connecting tube 302, and a ball 307 is embedded in the inner wall of the upper straight section of the buffer tube 303. The ball 307 rolls along the guide groove 306 during the lifting and lowering of the buffer tube 303 to drive the buffer tube 303 to rotate synchronously during the lifting and lowering process.

[0066] A second rubber bag 310 is fixedly bonded above the outer partition of the connecting tube 301, and a first rubber bag 308 is fixedly bonded to the upper end of the second rubber bag 310, and the upper end of the first rubber bag 308 is fixedly bonded to the inner wall of the upper end of the outer tube 304, and the first rubber bag 308 and the second rubber bag 310 are both arranged in an annular structure. At the same time, the first rubber bag 308 and the second rubber bag 310 are squeezed during the lifting and lowering adjustment process of the connecting tube 301 and the outer tube 304, and an elastic rubber bag 309 with an annular structure is embedded and installed on the inner side of the connecting tube 301, the elastic rubber bag 309 and the first rubber bag 308 are connected through a pipeline, and the elastic rubber bag 309 is inflated to achieve the blocking of the tube hole of the connecting tube 301.

[0067] The lower end of the second rubber bag 310 is connected to the exhaust pipe 311, and an annular partition 312 is fixedly provided on the inner side of the exhaust pipe 311, and a truncated cone-shaped sealing plug 313 is sealed in the hole of the annular partition 312, and the sealing plug 313 and the annular partition 312 are elastically connected by a second spring 314. The pipe mouth of the exhaust pipe 311 faces the inner side of the connecting pipe 301, and the high-pressure gas discharged from the exhaust pipe 311 realizes the clearing of the blockage in the buffer pipe 303, and the outer side of the second rubber bag 310 is also connected to a one-way air intake pipe 315.

[0068] A vibration hole is formed at the bottom of the rhombus opening of the rhombus buffer section of the buffer tube 303, and a vibrating rod 316 is connected to the ball in the vibration hole, and a third spring 317 is connected between the vibrating rod 316 and the rhombus buffer section. At the same time, the outer side of the lower end of the rhombus buffer section of the buffer tube 303 is elastically rotatably connected to a rotating ring 318 through a frame, and a cable 319 is wound around the outer side of the rotating ring 318, and the upper end of the cable 319 is fixedly connected to the upper end of the connecting tube 301, and the other end of the cable 319 is fixedly connected to the outer side of the upper end of the vibrating rod 316 after passing through the rotating ring 318, and a pressure sensor is provided at the end of the vibrating rod 316.

[0069] When concrete enters the buffer tube group 3, the buffer tube 303 can buffer the concrete, and under the impact of the concrete, the upper straight section of the buffer tube 303 will be telescopically adjusted with the connecting tube 302, and the first spring 305 will be stretched at this time, thereby further improving the buffering effect and preventing the buffer tube 303 from being subjected to excessive force instantly and accelerating the loss. As the upper straight section of the buffer tube 303 and the connecting tube 302 are telescopically adjusted, the ball 307 on the inner wall of the upper straight section can roll along the spiral guide groove 306 provided on the outer wall of the connecting tube 302, so that the buffer tube 303 can be synchronously rotated during the lifting and lowering adjustment process, thereby reducing the residual rate of concrete on the inner side of the buffer tube 303;

[0070] When the buffer tube 303 is blocked, the pressure sensor at the lower end of the vibrating rod 316 detects the pressure change and automatically starts the vibrating rod 316 to vibrate and loosen the concrete at the blocked location to clear the blockage. At the same time, the gravity of the buffer tube 303 gradually increases after being blocked, so that it drives the outer tube 304 to move further downward. At this time, the outer tube 304 will cooperate with the partition on the outside of the connecting tube 301 to squeeze the first rubber bag 308 and the second rubber bag 310, so that the first rubber bag 308 is compressed and the gas inside it is transported to the inside of the elastic rubber bag 309 through the pipeline, so that the elastic rubber bag 309 expands, thereby blocking the connecting tube 301. At the same time, after the second rubber bag 310 is pressurized, the internal air pressure increases. When the air pressure is too high, it will push the sealing plug 313 in the exhaust pipe 311 to move elastically, realizing automatic high-speed pressure relief, thereby injecting air into the inside of the buffer tube 303, causing the air pressure inside the buffer tube 303 to increase, thereby pushing the buffer tube 303 to move. The concrete blocked at the bottom is discharged, and the vibrating rod 316 is used to achieve efficient blockage clearing. During the downward movement of the buffer tube 303, the cable 319 pulls the vibrating rod 316 to rotate, so that the upper end of the vibrating rod 316 is close to the inner wall of the rotating ring 318. As the cable 319 continues to be pulled, the cable 319 wound around the outer side of the rotating ring 318 can be unwound, thereby driving the rotating ring 318 and the vibrating rod 316 to rotate and swing, thereby effectively expanding the vibration of the vibrating rod 316. 16, and when the vibrating rod 316 fits against the inner wall of the buffer tube 303 during movement, the vibration can be further transmitted to improve the clearing effect. When the clearing is completed, the rotating ring 318 and the vibrating rod 316 will be reset under the elastic force of the torsion spring and the third spring 317, and the buffer tube 303 will move up under the elastic force of the first spring 305 and rotate at the same time, thereby auxiliary cleaning of the inner wall of the buffer tube 303 is achieved to avoid excessive concrete residue on the inner wall from solidifying.

[0071] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0072] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An efficient storage system for large-size aggregate and low-slump concrete, comprising an upper lock head conveying unit and a lower lock head conveying unit respectively arranged symmetrically at the upper lock head position and the lower lock head position of the lock hub body, characterized in that: The upper gate conveying unit and the lower gate conveying unit each comprise a main conveying line and three branches, the main conveying line being composed of six-stage belt conveyors (1) connected at different heights in the longitudinal direction, three branches being arranged at intervals at the rear of the outer side of the main conveying line, each branch being composed of a belt conveyor (1), and two-stage material distribution mechanisms being arranged on one side corresponding to each branch, each stage of the material distribution mechanism being composed of three material distribution machines (2) arranged at intervals; The main conveying line also includes a buffer tube group (3), and a buffer tube group (3) extending downward is arranged below the tail end discharge port of the fourth-stage, fifth-stage and sixth-stage belt conveyors (1), and the buffer tube group (3) includes a buffer tube (303), and the buffer tube (303) includes an upper straight tube section, a rhombus-shaped buffer section and a lower straight tube section, the rhombus-shaped buffer section is composed of two supporting tubes that are butted end to end, the upper straight tube section is connected to the rhombus-shaped buffer section, and the lower straight tube section is connected to the rhombus-shaped buffer section; The buffer tube group (3) further comprises a connecting tube (301), wherein a connecting tube (302) is integrally provided at the lower end of the connecting tube (301), and the connecting tube (302) and the upper straight tube section of the buffer tube (303) are telescopically connected, and an outer tube (304) is rotatably connected to the outer side of the upper end of the upper straight tube section of the buffer tube (303), and a first spring (305) is connected between the outer tube (304) and the outer side of the connecting tube (301); The diamond-shaped opening bottom of the diamond-shaped buffer section of the buffer tube (303) is provided with a vibrating opening, and a ball in the vibrating opening is connected to a vibrating rod (316), and a third spring (317) is connected between the vibrating rod (316) and the diamond-shaped buffer section, and the outer side of the lower end of the diamond-shaped buffer section of the buffer tube (303) is elastically rotatably connected to a rotating ring (318) through a frame, and a cable (319) is wound around the outer side of the rotating ring (318), and the upper end of the cable (319) is fixedly connected to the upper end of the connecting tube (301), and the other end of the cable (319) passes through the rotating ring (318) and is fixedly connected to the outer side of the upper end of the vibrating rod (316), and a pressure sensor is provided at the end of the vibrating rod (316); The outer wall of the connecting tube (302) is provided with a spiral guide groove (306), and a ball (307) is embedded and installed in the inner wall of the upper straight tube section of the buffer tube (303), and the ball (307) rolls along the guide groove (306) during the lifting process of the buffer tube (303), so as to drive the buffer tube (303) to rotate synchronously during the lifting process.

2. The efficient silo system for large-size aggregate and low-slump concrete according to claim 1 is characterized in that: The belt conveyor (1) comprises a belt conveyor column (101), a belt conveyor body (102), a protective cover mounting frame (103) and a protective cover (104); the belt conveyor body (102) is mounted on the upper part of the belt conveyor column (101), and protective cover mounting frames (103) are arranged on both sides of the belt conveyor body (102) along its length direction; a protective cover (104) is laid on the top of the protective cover mounting frame (103), and the protective cover (104) comprises a rock wool board with a broken line cross section, and a ridge tile is arranged at the top corner of the rock wool board.

3. The efficient silo system for large-size aggregate and low-slump concrete according to claim 1 is characterized in that: The material placing machine (2) comprises a material placing machine column (201) and a rotary material placing machine body (202) arranged on the material placing machine column (201), and the material placing machine column (201) is a three-stage lifting column.

4. The efficient silo system for large-size aggregate and low-slump concrete according to claim 1 is characterized in that: A second rubber bag (310) is fixedly bonded above the outer partition of the connecting tube (301), and a first rubber bag (308) is fixedly bonded to the upper end of the second rubber bag (310), and the upper end of the first rubber bag (308) is fixedly bonded to the inner wall of the upper end of the outer tube (304), and the first rubber bag (308) and the second rubber bag (310) are both arranged in an annular structure, and the first rubber bag (308) and the second rubber bag (310) are squeezed during the lifting and lowering adjustment of the connecting tube (301) and the outer tube (304), and an elastic rubber bag (309) with an annular structure is embedded and installed on the inner side of the connecting tube (301), and the elastic rubber bag (309) and the first rubber bag (308) are connected through a pipeline, and the elastic rubber bag (309) is inflated to achieve the blocking of the tube hole of the connecting tube (301).

5. The efficient silo system for large-size aggregate low-slump concrete according to claim 4 is characterized in that: The lower end of the second rubber bag (310) is connected to an exhaust pipe (311), and an annular baffle (312) is fixedly arranged on the inner side of the exhaust pipe (311), and a truncated cone-shaped sealing plug (313) is sealed in the hole of the annular baffle (312), and the sealing plug (313) and the annular baffle (312) are elastically connected via a second spring (314), the pipe mouth of the exhaust pipe (311) faces the inner side of the connecting pipe (301), and the high-pressure gas discharged from the exhaust pipe (311) clears the blockage in the buffer pipe (303), and the outer side of the second rubber bag (310) is also connected to a one-way air intake pipe (315).

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