A pouring device for long-span steel reinforced concrete

Abstract

The utility model discloses a kind of for large-span steel reinforced concrete pouring device, it is related to steel reinforced concrete pouring technical field, including rear wheel axle, rear wheel and fixed platform, the number of rear wheel is two, and respectively set in the left and right two end surfaces of the rear wheel axle, with the rear wheel axle rotation connection.The utility model is through setting rear wheel axle, rear wheel, fixed platform, connecting rod, support rod, front wheel axle, front wheel, conveying pipe, fixed seat, storage cone barrel, barrel cover, feeding inlet, discharge pipe, conveying mechanism, rotating rod, helical blade, motor one, support adjusting mechanism, screw rod, movable support rod, rotating shaft, sleeve, driving part, worm wheel, worm, rocking handle, stirring mechanism, stirring shaft, stirring paddle, motor two, hose and turning plate The cooperation of use, realized that concrete slurry short-range flexible transfer, large-span stable delivery, can continue to stir simultaneously to prevent segregation, also can flexibly adjust pouring height and angle, and the effect of low use cost deployment convenient.

Description

Technical Field

[0001] This utility model relates to the field of steel-concrete casting technology, specifically to a device for casting large-span steel-concrete structures. Background Technology

[0002] In the field of building construction, steel-concrete composite structures are widely used in building construction due to their combination of the high strength and ductility of steel with the high compressive strength and durability of concrete. As the core process in the construction of this type of structure, the efficiency and quality of steel-concrete composite pouring directly determine the stability and service life of the overall building structure.

[0003] However, in existing concrete pouring work, there are sometimes large-span scenarios such as intervals or sloping areas in the pouring area. Traditional manual transportation of concrete slurry is inefficient and prone to spillage. It is difficult to transport it to the designated location through intervals and spans. Moreover, it cannot be continuously mixed during short-distance transportation, and the concrete slurry is prone to segregation when left to stand, which affects the pouring quality. In addition, although large concrete pump trucks can achieve long-distance transportation, they are large in size and inflexible in deployment, and their use in some small construction scenarios is too costly. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a large-span steel-concrete casting device. This device enables flexible short-distance transport of concrete slurry, stable delivery over large spans, continuous mixing to prevent segregation, and flexible adjustment of casting height and angle. It also boasts advantages such as low cost and convenient deployment. To a certain extent, this improves or solves the problems encountered in existing concrete casting operations, where traditional manual transport of concrete slurry is inefficient, prone to spillage, and difficult to deliver to designated locations across gaps or slopes. Furthermore, continuous mixing is not possible during short-distance transport, leading to segregation of the concrete slurry and affecting casting quality. In addition, while large concrete pump trucks can achieve long-distance transport, their large size makes deployment inflexible, and their high cost in some small-scale construction scenarios further complicates the issue.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A device for casting large-span steel-concrete composite structures, comprising a rear axle, rear wheels, and a fixed platform. Two rear wheels are respectively fitted onto the left and right ends of the rear axle and rotatably connected to it. The fixed platform is positioned above the rear axle, with its lower end fitted onto the surface of the rear axle and rotatably connected to it. A connecting rod is fixedly connected to the middle of the front side of the rear axle, and a support rod is fixedly connected to the front end of the connecting rod. A front axle is rotatably connected to the lower end of the support rod. Front wheels are fitted onto the left and right ends of the front axle, and the two front wheels are connected to the front axle. The fixed platform is rotatably connected to a conveying pipe on its upper side. Two fixed seats are fitted on the rear surface of the conveying pipe and are fixedly connected to the conveying pipe. The lower side of the fixed seats is fixedly connected to the upper surface of the fixed platform. A storage cone is fixedly connected to the upper rear side of the conveying pipe and communicates with the conveying pipe. A lid is fixedly connected to the top of the storage cone and a feeding inlet is opened on the front side of the lid. The front end of the conveying pipe is inclined upward and a discharge port is fixedly connected to the lower front side of the conveying pipe. A conveying mechanism is provided inside the conveying pipe. A support adjustment mechanism is provided inside the support rod. A stirring mechanism is provided inside the storage cone.

[0006] In a preferred embodiment of this utility model, the conveying mechanism includes a rotating rod, a spiral blade, and a motor. The rotating rod is disposed inside the conveying pipe, and both its front and rear ends are rotatably connected to the conveying pipe, with its rear end extending out of the conveying pipe. The spiral blade is sleeved on the surface of the rotating rod and fixedly connected to the rotating rod. The motor is fixedly connected to the rear end of the rotating rod and fixedly connected to the rear surface of the conveying pipe.

[0007] As a preferred embodiment of this utility model, a flexible hose is sleeved at the lower end of the discharge port, and the flexible hose is fixedly connected to and communicates with the discharge port.

[0008] In a preferred embodiment of this invention, the support adjustment mechanism includes a screw, a movable support rod, a rotating shaft, a sleeve, and a driving component. The screw is disposed inside the support rod, and its lower end is rotatably connected to the bottom end of the support rod. The movable support rod is sleeved on the surface of the screw and threadedly connected to the screw. The upper end of the movable support rod extends out of the support rod and is slidably connected to the support rod. The rotating shaft is fixedly connected to the upper end of the movable support rod. The sleeve is sleeved on the front end surface of the conveying pipe and is fixedly connected to the conveying pipe. The lower end of the sleeve is sleeved on the surface of the rotating shaft and is rotatably connected to the rotating shaft. The driving component is disposed at the lower end of the screw.

[0009] In a preferred embodiment of this invention, the driving component includes a worm gear, a worm, and a crank handle. The worm gear is sleeved on the lower end surface of the screw and fixedly connected to the screw. The worm is located on the left side of the worm gear and meshes with the worm gear. Both the front and rear ends of the worm are rotatably connected to the support rod, and the front end extends out of the support rod. The crank handle is fixedly connected to the front end of the worm.

[0010] As a preferred embodiment of this utility model, the stirring mechanism includes a stirring shaft, a stirring paddle, and a second motor. The stirring shaft is disposed inside the storage cone and its upper end passes through the lid and is rotatably connected to the lid. There are two stirring paddles, which are respectively fitted onto the upper and lower surfaces of the stirring shaft and are fixedly connected to the stirring shaft. The second motor is fixedly connected to the top of the stirring shaft and is fixedly connected to the upper surface of the lid.

[0011] As a preferred embodiment of this invention, three flipping plates are evenly and fixedly connected around the lower end of the stirring shaft.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, through the coordinated use of a rear axle, rear wheel, fixed platform, connecting rod, support rod, front axle, front wheel, conveying pipe, fixed seat, storage cone, bucket cover, feeding inlet, discharge pipe, conveying mechanism, rotating rod, spiral blade, motor one, support adjustment mechanism, screw, movable support rod, rotating shaft, sleeve, driving component, worm gear, worm, crank handle, mixing mechanism, mixing shaft, mixing paddle, motor two, hose, and tilting plate, improves or solves to a certain extent the problems in existing concrete pouring work, where there are sometimes large span scenarios such as intervals or slope areas in the pouring area. Traditional manual transportation of concrete slurry is inefficient, prone to spillage, and difficult to transport to the designated location through interval span areas. Moreover, continuous mixing is not possible during short-distance transportation, and the concrete slurry is prone to segregation when left to stand, affecting the pouring quality. In addition, although large concrete pump trucks can achieve long-distance transportation, they are large in size and inflexible in deployment, and their use in some small construction scenarios is too costly.

[0013] 2. This utility model can achieve stable span delivery of concrete slurry by setting a conveying mechanism, and the mixing mechanism can prevent the concrete slurry from segregating. The two work together to ensure the delivery efficiency and quality of concrete slurry during large-span pouring, and the discharge pipe hose can improve the pouring accuracy.

[0014] 3. This utility model, by setting a support adjustment mechanism, allows for flexible adjustment of the height of the front end of the delivery pipe and the pouring angle through manual drive, adapting to the pouring requirements of different slopes and heights in large-span scenarios. Moreover, the structure is simple and easy to operate, requiring no complex power equipment. Attached Figure Description

[0015] Figure 1This is a three-dimensional structural diagram of the casting device of this utility model.

[0016] Figure 2 This is a schematic diagram of the exploded three-dimensional structure of the casting device.

[0017] Figure 3 A cross-sectional three-dimensional structural diagram of the storage cone and conveying mechanism.

[0018] Figure 4 A schematic diagram of the exploded three-dimensional structure supporting the adjustment mechanism.

[0019] In the diagram: 1. Rear axle; 11. Rear wheel; 12. Fixed platform; 13. Connecting rod; 14. Support rod; 15. Front axle; 16. Front wheel; 2. Conveying pipe; 21. Fixed seat; 22. Storage cone; 221. Bucket cover; 222. Feeding inlet; 23. Discharge pipe outlet; 3. Conveying mechanism; 31. Rotating rod; 32. Spiral blade; 33. Motor 1; 4. Support adjustment mechanism; 41. Screw; 42. Movable support rod; 43. Rotating shaft; 44. Sleeve; 45. Driving component; 451. Worm gear; 452. Worm; 453. Handle; 5. Stirring mechanism; 51. Stirring shaft; 52. Stirring paddle; 53. Motor 2; 6. Hose; 7. Tilting plate. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0023] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth. Example

[0024] Reference Figure 1-4 This is the first embodiment of the present invention, providing a device for casting large-span steel-concrete composite structures, including a rear axle 1, rear wheels 11, and a fixed platform 12. Two rear wheels 11 are respectively fitted onto the left and right ends of the rear axle 1 and rotatably connected to it. The fixed platform 12 is positioned above the rear axle 1, with its lower end fitted onto the surface of the rear axle 1 and rotatably connected to it. A connecting rod 13 is fixedly connected to the middle of the front side of the rear axle 1, and a support rod 14 is fixedly connected to the front end of the connecting rod 13. A front axle 15 is rotatably connected to the lower end of the support rod 14. Front wheels 16 are fitted onto the left and right ends of the front axle 15, and the two front wheels 16 are rotatably connected to the front axle 15. A conveying pipe 2 is provided on the upper side of the fixed platform 12. Two fixed seats 21 are fitted on the rear surface of the conveying pipe 2. The two fixed seats 21 are fixedly connected to the conveying pipe 2 and their lower sides are fixedly connected to the upper surface of the fixed platform 12. A storage cone 22 is fixedly connected to the upper rear side of the conveying pipe 2. The storage cone 22 is interconnected with the conveying pipe 2. A bucket cover 221 is fixedly connected to the top of the storage cone 22. A feeding inlet 222 is opened on the front side of the bucket cover 221. The front end of the conveying pipe 2 is inclined upward. A discharge pipe 23 is fixedly connected to the lower front side of the conveying pipe 2. A conveying mechanism 3 is provided inside the conveying pipe 2. A support adjustment mechanism 4 is provided inside the support rod 14. A stirring mechanism 5 is provided inside the storage cone 22.

[0025] Specifically, it enables pre-storage of concrete slurry, short-distance transport and mixing, large-span conveying, and flexible adjustment of pouring height and angle, while also offering advantages such as low operating costs and adaptability to various intervals and slopes.

[0026] Furthermore, the storage cone 22, in conjunction with the mixing mechanism 5, enables the storage of concrete slurry and prevents segregation. The conveying mechanism 3 completes the span conveying, the support and adjustment mechanism 4 adjusts the pouring height and angle, and the front and rear wheels 11 enable short-distance transfer. All components work together to meet the needs of large-span pouring. Example

[0027] In the second embodiment of this utility model, the conveying mechanism 3 includes a rotating rod 31, a spiral blade 32, and a motor 33. The rotating rod 31 is disposed inside the conveying pipe 2, and both its front and rear ends are rotatably connected to the conveying pipe 2, with its rear end extending out of the conveying pipe 2. The spiral blade 32 is sleeved on the surface of the rotating rod 31 and is fixedly connected to the rotating rod 31. The motor 33 is fixedly connected to the rear end of the rotating rod 31 and is fixedly connected to the rear surface of the conveying pipe 2. A flexible hose 6 is fitted at the lower end of the discharge port 23. The flexible hose 6 is fixedly connected to and communicates with the discharge port 23. The stirring mechanism 5 includes a stirring shaft 51, a stirring paddle 52, and a second motor 53. The stirring shaft 51 is located inside the storage cone 22, and its upper end passes through the lid 221 and is rotatably connected to the lid 221. There are two stirring paddles 52, which are respectively fitted on the upper and lower end surfaces of the stirring shaft 51 and are fixedly connected to the stirring shaft 51. The second motor 53 is fixedly connected to the top of the stirring shaft 51 and is fixedly connected to the upper surface of the lid 221. Three flipping plates 7 are evenly and fixedly connected around the lower end of the stirring shaft 51.

[0028] Specifically, by setting up the conveying mechanism 3, the concrete slurry can be conveyed stably across the span, and the mixing mechanism 5 can prevent the concrete slurry from segregating. The two work together to ensure the conveying efficiency and quality of the concrete slurry during large-span pouring, and the discharge pipe 23 and flexible hose 6 can improve the pouring accuracy.

[0029] Furthermore, in the mixing mechanism 5, motor 2 53 drives the mixing shaft 51 to rotate, which in turn drives the mixing paddle 52 to mix the concrete slurry in the bucket. The turning plate 7 turns the bottom slurry to prevent sedimentation and blockage. In the conveying mechanism 3, motor 1 33 drives the rotating rod 31 and the spiral blade 32 to rotate, pushing the concrete slurry in the storage cone 22 along the conveying pipe 2 to the discharge pipe 23, and then guiding it to the target area through the hose 6. Example

[0030] In the third embodiment of this utility model, the support adjustment mechanism 4 includes a screw 41, a movable support rod 42, a rotating shaft 43, a sleeve 44, and a driving component 45. The screw 41 is disposed inside the support rod 14, and its lower end is rotatably connected to the bottom end of the support rod 14. The movable support rod 42 is sleeved on the surface of the screw 41 and is threadedly connected to the screw 41. The upper end of the movable support rod 42 extends out of the support rod 14 and is slidably connected to the support rod 14. The rotating shaft 43 is fixedly connected to the upper end of the movable support rod 42. The sleeve 44 is sleeved on the front end surface of the conveying pipe 2 and is fixedly connected to the conveying pipe 2. The lower end of the sleeve 44 is sleeved on the surface of the rotating shaft 43 and is rotatably connected to the rotating shaft 43. The driving component 45 is disposed at the lower end of the screw 41. The driving component 45 includes a worm gear 451, a worm 452, and a crank handle 453. The worm gear 451 is sleeved on the lower end surface of the screw 41 and is fixedly connected to the screw 41. The worm 452 is located on the left side of the worm gear 451 and is meshed with the worm gear 451. Both the front and rear ends of the worm 452 are rotatably connected to the support rod 14, and the front end extends out of the support rod 14. The crank handle 453 is fixedly connected to the front end of the worm 452.

[0031] Specifically, by setting up the support adjustment mechanism 4, the height of the front end of the delivery pipe 2 and the pouring angle can be flexibly adjusted by manual drive, which can adapt to the pouring needs of different slopes and heights in large-span scenarios. Moreover, the structure is simple and easy to operate, and no complex power equipment is required.

[0032] Furthermore, the operator turns the crank handle 453 to drive the worm gear 452 to rotate. The worm gear 452 meshes with the worm wheel 451 to drive the screw 41 to rotate inside the support rod 14. Since the movable support rod 42 is limited by the support rod 14 and cannot rotate, the screw 41 rotates to drive the movable support rod 42 to rise and fall along the axis of the support rod 14. The upper end of the movable support rod 42 is rotatably connected to the sleeve 44 of the conveying pipe 2 through the rotating shaft 43, thereby driving the front end of the conveying pipe 2 to rotate around the fixed seat 21, so as to realize the adjustment of the pouring height and angle.

[0033] When in use, the concrete slurry is first poured into the storage cone 22 through the feeding inlet 222. At this time, the second motor 53 is started. The output shaft of the second motor 53 drives the mixing shaft 51 to rotate. The three flipping plates 7 at the lower end of the mixing shaft 51 rotate synchronously with the upper and lower sets of mixing blades 52. The flipping plates 7 can turn over the concrete slurry deposited at the bottom of the storage cone 22 to avoid aggregate settling and to prevent it from being squeezed and stuck at the bottom inlet. The mixing blades 52 mix the entire concrete slurry in the bucket to ensure that the concrete slurry remains in a uniform state during storage and waiting for delivery, and to prevent segregation. Meanwhile, the front wheel 16 and the rear wheel 11 at the bottom of the device work together to move the entire device within the construction site, enabling short-distance transfer of concrete slurry without the need for additional equipment, reducing operating costs while improving construction flexibility. If the pouring height or angle needs to be adjusted, the operator turns the crank handle 453, which drives the worm gear 452 to rotate. The worm gear 452 meshes with the worm wheel 451, which drives the screw 41 to rotate inside the support rod 14. Since the movable support rod 42 is threadedly connected to the screw 41 and is limited by the inner wall of the support rod 14, it cannot rotate. When the screw 41 rotates, it will drive the movable support rod 42 to slide up and down along the axis of the support rod 14. The upper end of the movable support rod 42 is rotatably connected to the sleeve 44 at the front end of the conveying pipe 2 through the rotating shaft 43. Therefore, the lifting and lowering of the movable support rod 42 will cause the front end of the conveying pipe 2 to rotate up and down around the connection point between the fixed seat 21 and the conveying pipe 2, thereby adjusting the height of the discharge port 23 and the pouring angle to adapt to the pouring requirements of different heights and slopes. When the concrete is to be poured, the motor 33 is started. The motor 33 drives the rotating rod 31 to rotate inside the conveying pipe 2. The spiral blades 32 on the surface of the rotating rod 31 rotate accordingly. The spiral blades 32 push the concrete slurry that has fallen into the storage cone 22 into the rear end of the conveying pipe 2 forward through the spiral propulsion action. Because the front end of the conveying pipe 2 is designed to be inclined upward, the concrete slurry is steadily conveyed forward along the inner wall of the conveying pipe 2 to the discharge port 23 at the front end under the continuous pushing of the spiral blades 32. Then, it is precisely guided to the target pouring area through the hose 6 at the lower end of the discharge port 23.

[0034] In summary, by using the rear axle 1, rear wheel 11, fixed platform 12, connecting rod 13, support rod 14, front axle 15, front wheel 16, conveying pipe 2, fixed seat 21, storage cone 22, bucket cover 221, feeding inlet 222, discharging pipe 23, conveying mechanism 3, rotating rod 31, spiral blade 32, motor 1 33, support adjustment mechanism 4, screw 41, movable support rod 42, rotating shaft 43, sleeve 44, driving component 45, worm gear 452, worm 452, crank handle 453, mixing mechanism 5, mixing shaft 51, mixing paddle 52, motor 2 53, hose 6, and tilting plate 7 in combination, the following effects are achieved: flexible short-distance transport of concrete slurry, stable large-span transport, continuous mixing to prevent segregation, flexible adjustment of pouring height and angle, low operating cost, and convenient deployment.

[0035] The motor 33, motor 53, screw 41, gear, worm gear 451 and worm 452 used in this application can be additionally equipped with protective measures of common knowledge in this technical field under different usage environments, including but not limited to the following methods, such as protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing, which are commonly used by those skilled in the art.

[0036] It should be noted that motor 33, motor 53, screw 41, gear, worm gear 451 and worm 452 are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method and other methods of the equipment, as well as the materials of each accessory and the selection of various parameters are common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0037] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0038] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0039] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A device for casting steel-concrete composite structures with large spans, comprising a rear axle (1), a rear wheel (11), and a fixed platform (12), characterized in that: There are two rear wheels (11), which are respectively fitted on the left and right ends of the rear wheel axle (1) and rotatably connected to the rear wheel axle (1). The fixed platform (12) is set above the rear wheel axle (1), and its lower end is fitted on the surface of the rear wheel axle (1) and rotatably connected to the rear wheel axle (1). A connecting rod (13) is fixedly connected to the middle of the front side of the rear wheel axle (1). A support rod (14) is fixedly connected to the front end of the connecting rod (13). A front wheel axle (15) is rotatably connected to the lower end of the support rod (14). Front wheels (16) are fitted on the left and right ends of the front wheel axle (15). The two front wheels (16) are rotatably connected to the front wheel axle (15). A conveying pipe (2) is set on the upper side of the fixed platform (12). The rear end surface of the conveying pipe (2) is fitted with a... Two fixed seats (21) are provided. The two fixed seats (21) are fixedly connected to the conveying pipe (2) and their lower sides are fixedly connected to the upper surface of the fixed platform (12). A storage cone (22) is fixedly connected to the upper rear end of the conveying pipe (2). The storage cone (22) is interconnected with the conveying pipe (2). A bucket cover (221) is fixedly connected to the top of the storage cone (22). A feeding inlet (222) is opened on the front side of the bucket cover (221). The front end of the conveying pipe (2) is inclined upward. A discharge port (23) is fixedly connected to the lower front side of the conveying pipe (2). A conveying mechanism (3) is provided inside the conveying pipe (2). A support adjustment mechanism (4) is provided inside the support rod (14). A stirring mechanism (5) is provided inside the storage cone (22).

2. The device for casting large-span steel-concrete composite structures according to claim 1, characterized in that: The conveying mechanism (3) includes a rotating rod (31), a spiral blade (32) and a motor (33). The rotating rod (31) is located inside the conveying pipe (2) and is rotatably connected to the conveying pipe (2) at both ends. The rear end extends out of the conveying pipe (2). The spiral blade (32) is sleeved on the surface of the rotating rod (31) and is fixedly connected to the rotating rod (31). The motor (33) is fixedly connected to the rear end of the rotating rod (31) and is fixedly connected to the rear surface of the conveying pipe (2).

3. The device for casting large-span steel-concrete composite structures according to claim 1, characterized in that: The lower end of the discharge port (23) is fitted with a flexible hose (6), and the flexible hose (6) is fixedly connected to and communicates with the discharge port (23).

4. The device for casting large-span steel-concrete composite structures according to claim 1, characterized in that: The support adjustment mechanism (4) includes a screw (41), a movable support rod (42), a rotating shaft (43), a sleeve (44), and a driving component (45). The screw (41) is disposed inside the support rod (14), and its lower end is rotatably connected to the bottom end inside the support rod (14). The movable support rod (42) is sleeved on the surface of the screw (41) and threadedly connected to the screw (41). The upper end of the movable support rod (42) extends out of the support rod (14) and is slidably connected to the support rod (14). The rotating shaft (43) is fixedly connected to the upper end of the movable support rod (42). The sleeve (44) is sleeved on the front end surface of the conveying pipe (2) and is fixedly connected to the conveying pipe (2). The lower end of the sleeve (44) is sleeved on the surface of the rotating shaft (43) and is rotatably connected to the rotating shaft (43). The driving component (45) is disposed at the lower end of the screw (41).

5. A device for casting large-span steel-concrete composite structures according to claim 4, characterized in that: The driving component (45) includes a worm gear (451), a worm (452), and a crank (453). The worm gear (451) is sleeved on the lower end surface of the screw (41) and is fixedly connected to the screw (41). The worm (452) is located on the left side of the worm gear (451) and is meshed with the worm gear (451). Both the front and rear ends of the worm (452) are rotatably connected to the support rod (14), and the front end extends out of the support rod (14). The crank (453) is fixedly connected to the front end of the worm (452).

6. The device for casting large-span steel-concrete composite structures according to claim 1, characterized in that: The stirring mechanism (5) includes a stirring shaft (51), a stirring paddle (52), and a second motor (53). The stirring shaft (51) is located inside the storage cone (22), and its upper end passes through the bucket cover (221) and is rotatably connected to the bucket cover (221). There are two stirring paddles (52), which are respectively fitted on the upper and lower surfaces of the stirring shaft (51) and are fixedly connected to the stirring shaft (51). The second motor (53) is fixedly connected to the top of the stirring shaft (51) and is fixedly connected to the upper surface of the bucket cover (221).

7. A steel-concrete composite casting device for large spans according to claim 6, characterized in that: Three flipping plates (7) are evenly fixedly connected around the lower end of the stirring shaft (51).

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