Production system of concrete wind power tower drum

Abstract

The utility model discloses a production system of a concrete wind power tower drum. Comprising a wind power tower drum mold provided with a plurality of pouring ports, a concrete distributing device and a concrete mixer used for uniformly mixing various raw materials for manufacturing the wind power tower drum to form concrete for pouring, the raw material conveying device is used for conveying raw materials for manufacturing the wind power tower drum to the concrete mixer, the concrete conveying device is used for conveying concrete to the concrete distributing device, the concrete distributing device comprises a plurality of feeding pipes which are arranged in parallel, and an outlet of each feeding pipe corresponds to one pouring opening; an outlet of each feeding pipe is flush with the pouring opening. The multiple raw material conveying devices are arranged, and the outlet end of each raw material conveying device extends to the inlet end of the concrete mixer. The production system can realize multi-point simultaneous pouring, improves the appearance quality of the concrete wind power tower drum, reduces the production cost and the labor intensity, and improves the production efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building engineering, concretely relates to a production system of concrete wind power tower drum. BACKGROUND

[0002] Wind power generation is a kind of clean energy, in order to better utilize wind energy, wind power tower drum height is continuously improved, and 180m high wind tower has been built now. Since the stability of steel tower drum is poor, it cannot meet the needs of high tower, and high tower mostly adopts mixed tower structure. With the development of wind power generation, the demand for concrete tower drum will continuously increase.

[0003] There are two ways for the preparation of concrete tower drum: one is horizontal pouring, and the other is vertical pouring. Horizontal pouring has higher cost and poorer stability. Vertical pouring has less assembly, and thus has lower cost and better stability.

[0004] At present, when pouring concrete tower drum vertically, concrete is usually poured at one point, and flows to other parts under the action of self weight, or is forcibly vibrated at the pouring point to promote the flow of concrete. After pouring, the opening is closed and smoothed. This preparation process has the following problems: (1) concrete needs to flow a long distance after being poured into the mold, and the flow resistance is very large. In the mold, the driving force of concrete flow is self weight, and it is found through on-site observation that even if self-compacting concrete with an expansion degree of more than 700mm is used, the drop in the mold can still reach 2m; (2) it is easy to cause uneven distribution of concrete. The highly flowable concrete is easy to segregate, and the fiber and other components are easy to be retained when flowing through the corrugated pipe and other obstacles; (3) it is easy to cause directional orientation of fibers. During the long-distance flow in the mold, the fibers will be oriented in the flow direction, which will make the originally anisotropic distribution of steel fibers become isotropic, which is not conducive to the improvement of the tensile performance of concrete; (4) it is easy to produce appearance quality problems. Long-distance flow, high throwing of concrete, single-point pouring and other factors will all affect the appearance of the tower drum, such as color difference, air bubbles, sticky skin and other phenomena; (5) it is easy to produce cracks. The amount of cementing material of highly flowable concrete is large, and the shrinkage is large, which is easy to produce large stress when being constrained by the steel mold, and even lead to cracking of concrete; (6) the labor intensity is large, and the working efficiency is low. Manual operation of the vibrator is needed during construction pouring to accelerate the flow of concrete. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at the deficiencies in the prior art, and provides a production system of concrete wind power tower drum, which can prevent the cracking of the wind power tower drum, improve the appearance quality of the wind power tower drum, reduce the production cost and labor intensity, and improve the production efficiency.

[0006] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0007] A production system of a concrete wind power tower, comprising:

[0008] A wind power tower mold, a plurality of pouring openings are arranged on the wind power tower mold according to the embedded parts;

[0009] A concrete distribution device, comprising a plurality of feeding pipes arranged in parallel, the outlet of each feeding pipe corresponds to one pouring opening, and the outlet of each feeding pipe is flush with the corresponding pouring opening;

[0010] A concrete mixer for mixing a plurality of raw materials for manufacturing a wind power tower to form a pouring concrete;

[0011] A raw material conveying device for conveying raw materials for manufacturing a wind power tower to the concrete mixer, and the raw material conveying device is provided with a plurality of outlet ends extending to the inlet end of the concrete mixer;

[0012] A concrete conveying device for conveying the concrete flowing out of the outlet end of the concrete mixer to the concrete distribution device.

[0013] In some embodiments, the concrete distribution device is arranged to slide up and down relative to the wind power tower mold, so that the outlets of the feeding pipes are flush with the pouring openings.

[0014] In some embodiments, the concrete distribution device further comprises a support and a distribution bin fixedly arranged on the top of the support, the distribution bin comprises a bin body and a discharging element fixedly arranged in the bin body, the discharging element has a conical structure with a small top and a large bottom, the top of the bin body is open, the bottom of the bin body is provided with a plurality of discharge openings, each discharge opening is circumferentially spaced around the outer periphery of the bottom of the discharging element, the feeding pipes are arranged at the bottom of the bin body and are connected one by one at the positions of the discharge openings, and the lumen of the feeding pipe is in communication with the discharge opening.

[0015] In some embodiments, each feeding pipe is rotatably arranged at the bottom of the bin body to adjust the feeding distance.

[0016] In some embodiments, the concrete distribution device further comprises a driving mechanism for driving each feeding pipe to rotate relative to the bin body, the driving mechanism comprises a screw rod rotatably arranged on the support, a nut capable of moving up and down along the screw rod in cooperation with the screw rod, and a plurality of connecting rods, each connecting rod is provided one by one, one end of each connecting rod is rotatably connected with the nut, and the other end of the connecting rod is rotatably connected with the feeding pipe.

[0017] In some embodiments, the concrete distributing device further comprises a vibrator arranged on each feeding pipe respectively.

[0018] In some embodiments, the wind power tower tube mold comprises a mold body and an overload protection device arranged on the mold body.

[0019] The overload protection device comprises a constant force ejector rod, which comprises a sleeve, an unloading rod, a friction plate, an adjusting screw and an adjusting rod: one end of the sleeve is provided with a lumen; one end of the unloading rod extends into the lumen, and the unloading rod has a spacing distance between the end extending into the lumen and the end of the lumen; the friction plate is arranged between the unloading rod and the inner wall of the lumen, and the friction plate is pressed on the unloading rod; the adjusting screw is threadedly connected on the sleeve, one end of the adjusting screw extends into the lumen and abuts against the friction plate, so that the friction plate is pressed on the unloading rod, and a set friction force is generated between the friction plate and the unloading rod; one end of the adjusting rod is connected to the other end of the sleeve, and the connection length between the adjusting rod and the sleeve can be adjusted.

[0020] The overload protection device further comprises a rubber sheet, the mold body comprises an inner mold and an outer mold sleeved on the outside of the inner mold, the inner mold comprises a plurality of inner mold sheets arranged in sequence in the circumferential direction, and the rubber sheet is arranged between each adjacent two inner mold sheets respectively.

[0021] The overload protection device further comprises a bottom bolt for connecting the inner mold to the base, and the tightening torque of the bottom bolt is controlled by a torque wrench.

[0022] In some embodiments, a plurality of friction plates are arranged in the circumferential direction of the unloading rod, and / or a plurality of friction plates are arranged in the axial direction of the unloading rod.

[0023] In some embodiments, the other end of the sleeve is threadedly connected to one end of the adjusting rod, and the threadedly engaged length between the two can be adjusted.

[0024] In some embodiments, each pouring opening is arranged at the top of the wind power tower tube mold and is arranged in the circumferential direction.

[0025] Due to the use of the above technical solutions, the present application has the following advantages compared with the prior art:

[0026] (1) The production system can realize multi-point simultaneous pouring, ensure the uniformity of the concrete, avoid the stacking phenomenon during single-point pouring, ensure the continuity of the pouring process, and improve the quality of the wind power tower tube.

[0027] (2) The production system can significantly improve production efficiency, and the time required for pouring a wind power tower drum can be saved by more than 30%.

[0028] (3) The production system does not need to use manual vibration to accelerate the flow of concrete when pouring concrete, which can significantly reduce the labor intensity of workers.

[0029] (4) The production system has lower requirements for the flow performance of concrete, which can significantly reduce the cost of concrete. BRIEF DESCRIPTION OF DRAWINGS

[0030] FIG. 1 is a perspective view of the concrete wind power tower drum production system of the present embodiment; Figure 1 FIG. 2 is a perspective view of the concrete distribution device of the present embodiment; Figure 2 FIG. 3 is a top view of the concrete distribution device of the present embodiment;

[0031] FIG. 4 is a front view of the concrete distribution device of the present embodiment; Figure 3 FIG. 5 is a top view of the wind power tower drum mold of the present embodiment;

[0032] FIG. 6 is a front view of the wind power tower drum mold of the present embodiment; Figure 4 FIG. 7 is a top view of the constant force ejector rod protection device of the present embodiment; Figure 5 FIG. 8 is a front view of the constant force ejector rod protection device of the present embodiment.

[0033] Wherein: 1, wind power tower drum mold; 11, mold body; 111, pouring port; 112, inner mold; 113, outer mold; 12, constant force ejector rod; 121, sleeve; 1211, lumen; 1212, second end; 1213, threaded hole; 122, unloading rod; 1221, first end; 1222, first connecting part; 123, friction plate; 124, adjusting screw; 125, adjusting rod; 1251, external thread; 1252, wrench position; 1253, second connecting part; 13, rubber sheet; 14, bottom bolt; 2, concrete distribution device; 21, support; 22, distribution bin; 221, bin body; 222, discharging element; 23, feeding pipe; 24, lead screw; 25, nut; 26, connecting rod; 27, vibrator; 3, concrete conveying device (part). DETAILED DESCRIPTION

[0034] The technical solutions of the present embodiment will be described below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present embodiment, rather than all the embodiments. Based on the embodiments in the present embodiment, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present embodiment.

[0035] In the description of the utility model, it is necessary to explain that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, such as Figure 1 In the description of the utility model, it is necessary to explain that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, such as

[0036] As Figure 1 Indicated, the production system of concrete wind power tower drum of the utility model includes wind power tower drum mould 1, concrete distributing device 2, concrete mixer (not shown in the drawing), raw material transmission device (not shown in the drawing) and concrete conveying device 3 (partly shown).

[0037] Wind power tower drum is made of multiple raw materials, and the concrete mixer is used to mix the multiple raw materials for manufacturing wind power tower drum uniformly to form the concrete for pouring. The concrete mixer can adopt the structure in the prior art.

[0038] The raw material transmission device is used to convey the raw materials for manufacturing wind power tower drum to the concrete mixer, and multiple raw material transmission devices are provided. The outlet end of each raw material transmission device extends to the inlet end of the concrete mixer, so that the raw materials are conveyed into the concrete mixer for mixing and stirring. In this embodiment, each raw material transmission device transmits different raw materials. The raw material transmission device can adopt the structure in the prior art.

[0039] The concrete conveying device is used to convey the concrete flowing out of the outlet end of the concrete mixer into the concrete distributing device 2. The concrete conveying device can adopt the structure in the prior art, such as a concrete conveying device including a trolley, a hopper provided on the trolley and a crane. In the initial state, the hopper is located at the outlet end of the concrete mixer. After a certain amount of concrete is loaded in the hopper, the hopper is transported to the position of the concrete distributing device 2 by the trolley, the hopper is lifted to the upper side of the concrete distributing device 2 by the crane, and then the concrete flows out of the hopper into the concrete distributing device 2. Alternatively, the concrete conveying device can adopt a pumping mode. After the uniformly mixed concrete is transported to the position of the concrete distributing device 2, the concrete is pumped into the concrete distributing device 2, as shown in Figure 1

[0040] ​The wind power tower drum mold 1 is provided with a plurality of pouring openings 111 according to the embedded parts, and the concrete is distributed to each pouring opening 111 through the concrete distribution device 2, so as to be poured from each pouring opening 111 at the same time. This pouring mode can significantly shorten the horizontal flow distance of the concrete in the wind power tower drum mold 1, effectively avoid the segregation and directional distribution of the concrete, improve the uniformity of the tower drum, reduce the requirement for the fluidity of the fresh concrete, reduce the cost of the concrete, significantly reduce the amount of concrete poured into each pouring point, avoid the sticky skin phenomenon at the upper end of the wind power tower drum, reduce the amount of air introduced during pouring, and thus reduce the bubbles on the surface of the wind power tower drum. At the same time, after multi-point pouring, manual acceleration of the concrete flow is not required, which can reduce the labor intensity and production cost.

[0041] As shown in Figures 1 to 3 The concrete distribution device 2 includes a support 21, a distribution bin 22 and a feeding pipe 23.

[0042] The distribution bin 22 is fixedly arranged at the top of the support 21. The distribution bin 22 includes a bin body 221 and a discharging element 222 fixedly arranged in the bin body 221. The discharging element 222 is in a conical structure with a small top and a large bottom. The top of the bin body 221 is open, and the bottom of the bin body 221 is provided with a plurality of discharge openings 223. The discharge openings 223 are circumferentially spaced around the outer periphery of the bottom of the discharging element 222. The feeding pipe 23 is arranged in parallel and is arranged at the bottom of the bin body 221 and connected to each discharge opening 223. The lumen of the feeding pipe 23 is in communication with the discharge opening 223. The outlet of each feeding pipe 23 corresponds to a pouring opening 111, and the outlet of each feeding pipe 23 is flush with the corresponding pouring opening 111.

[0043] The distribution bin 22 of the concrete distribution device 2 adopts an open conical top structure and can cooperate with various forms of concrete conveying devices. The concrete conveyed by the concrete conveying device is poured into the bin body 221 from directly above the discharging element 222, and is fed to the periphery through the slope of the conical structure of the discharging element 222, so that the concrete flows to the position of each discharge opening 223 and is poured at the fixed point through the feeding pipe 23.

[0044] Each feeding pipe 23 is rotatably arranged at the bottom of the bin body 221, so as to adjust the feeding distance when the feeding pipe 23 rotates relative to the bin body 221.

[0045] The concrete distributing device 2 further comprises a driving mechanism, by which each feeding pipe 23 is driven to rotate relative to the bin body 221. The driving mechanism comprises a screw rod 24, a screw nut 25 and a connecting rod 26. The screw rod 24 is rotatably arranged on the support 21, and the screw nut 25 is screwed with the screw rod 24. When the screw rod 24 rotates, the screw nut 25 moves up and down along the screw rod 24. The connecting rod 26 is provided with a plurality of connecting rods, each of which is arranged in one-to-one correspondence with the feeding pipe 23, one end of each connecting rod 26 is rotatably connected with the screw nut 25, and the other end of the connecting rod 26 is rotatably connected with the feeding pipe 23. The position of the feeding pipe 23 can be adjusted like an umbrella being opened or folded by the driving mechanism, so as to adjust the feeding distance.

[0046] The concrete distributing device 2 is arranged to be able to slide up and down relative to the wind power tower drum mold 1, so that the outlet of the feeding pipe 23 is flush with the pouring opening 111. In this way, a large number of air bubbles can be avoided from being brought in during pouring, thereby affecting the quality of the wind power tower drum.

[0047] The concrete distributing device 2 further comprises a vibrator 27 arranged on each feeding pipe 23 respectively. By the vibrator 27, the concrete adhered to the wall of the feeding pipe 23 during pouring can be avoided to affect feeding, thereby ensuring the continuity of the pouring process.

[0048] The wind power tower drum mold 1 comprises a mold body 11, each pouring opening 111 is arranged at the top of the mold body 11 and is arranged to be uniformly distributed in the circumferential direction. The mold body 11 comprises an inner mold 112 and an outer mold 113 arranged outside the inner mold 112, and the interval between the inner mold 112 and the outer mold 113 forms a pouring area of the concrete.

[0049] The wind power tower drum mold 1 further comprises an overload protection device arranged on the mold body 11, by which the cracking phenomenon during the production of the wind power tower drum is avoided.

[0050] In one embodiment, as shown in Figure 1 and Figure 4 , the overload protection device comprises a constant force ejector rod 12 arranged in the mold body 11, by which the stress generated when the concrete shrinks can be effectively controlled, thereby avoiding the cracking phenomenon of the wind power tower drum.

[0051] As shown in Figure 5 , the constant force ejector rod 12 comprises a sleeve 121, an unloading rod 122, a friction plate 123, an adjusting screw 124 and an adjusting rod 125.

[0052] The sleeve 121 is provided with a lumen 1211 penetrating through one end surface of the sleeve 121.

[0053] One end of the unloading rod 122 extends into the lumen 1211 of the sleeve 121, and the end of the unloading rod 122 extending into the lumen 1211 is denoted as a first end 1221, the end of the lumen 1211 is denoted as a second end 1212, and the first end 1221 and the second end 1212 have a spacing distance. In this way, the unloading rod 122 can slide relative to the sleeve 121 in the direction of retracting into the lumen 1211 of the sleeve 121, so as to shorten the constant force rod.

[0054] The friction plate 123 is arranged between the unloading rod 122 and the inner wall of the lumen 1211 of the sleeve 121, and the friction plate 123 is pressed on the unloading rod 122, so that a friction force is generated between the friction plate 123 and the unloading rod 122.

[0055] The friction plate 123 can be arranged in multiple numbers in a circumferential and / or axial direction of the unloading rod 122, so that the friction force between the friction plate 123 and the unloading rod 122 is uniformly distributed, and the unloading rod 122 is balanced in force.

[0056] The adjusting screw 124 is threadedly connected to the sleeve 121, one end of the adjusting screw 124 extends into the lumen 1211 of the sleeve 121 and abuts against the friction plate 123, so as to apply a normal pressure to the friction plate 123, press the friction plate 123 on the unloading rod 122, and generate a friction force between the friction plate 123 and the unloading rod 122.

[0057] By controlling the torque of the adjusting screw 124 when being tightened, the normal pressure applied by the adjusting screw 124 to the friction plate 123 can be controlled.

[0058] The number of the adjusting screw 124 is determined according to the required friction force between the friction plate 123 and the unloading rod 122. Multiple adjusting screws 124 can be arranged in a length extension direction of the unloading rod 122, so that the friction force between the friction plate 123 and the unloading rod 122 is as uniformly distributed as possible, and the unloading rod 122 is balanced in force.

[0059] One end of the adjusting rod 125 is connected to the other end of the sleeve 121, and the connection length between the adjusting rod 125 and the sleeve 121 can be adjusted. In this way, by adjusting the connection length between the adjusting rod 125 and the sleeve 121, the length of the entire constant force rod can be adjusted, so that the constant force rod can be applied to the manufacture of wind power towers with different diameters.

[0060] In this embodiment, the other end of the sleeve 121 is provided with a threaded hole 1213, one end of the adjusting rod 125 is provided with an external thread 1251 matched with the threaded hole 1213, and the other end of the sleeve 121 and one end of the adjusting rod 125 are threadedly connected, and the threadedly engaged length between the two can be adjusted.

[0061] The adjusting rod 125 is further provided with a wrench position 1252 for the wrench to hold when the adjusting rod 125 is screwed. In this embodiment, the wrench position 1252 can be a hexagonal head or a quadrangular head, or other structural forms are also available. The wrench position 1252 has a spacing distance from the other end of the adjusting rod 125, which facilitates the operation of the wrench.

[0062] The other end of the unloading rod 122 is provided with a first connecting part 1222, and the other end of the adjusting rod 125 is provided with a second connecting part 1253. Both the first connecting part 1222 and the second connecting part 1253 are used to connect with the mold body 11.

[0063] The first connecting part 1222 and the second connecting part 1253 can both adopt a conical or hemispherical shape, or other structural forms are also available.

[0064] When the constant force ejector rod is used, the torque of the adjusting screw 124 when being screwed is controlled according to the frictional force between the friction plate 123 and the unloading rod 122, so as to control the normal pressure of the adjusting screw 124 on the friction plate 123 to meet the set requirements. The constant force ejector rod is placed at the required position, the wrench position 1252 is held by the wrench, and the connecting length between the adjusting rod 125 and the sleeve 121 is adjusted, so as to adjust the length of the constant force ejector rod to the set value.

[0065] When the force applied on the constant force ejector rod is less than the frictional force between the friction plate 123 and the unloading rod 122, the friction plate 123, the unloading rod 122 and the sleeve 121 form an integral structure, the constant force ejector rod exhibits rigidity, and the unloading rod 122 does not stretch. When the force applied on the constant force ejector rod is greater than the frictional force between the friction plate 123 and the unloading rod 122, since the inner diameter of the lumen 1211 of the sleeve 121 is greater than the sum of twice the thickness of the friction plate 123 and the outer diameter of the unloading rod 122, the friction plate 123 and the unloading rod 122 will slide, the unloading rod 122 slides relative to the sleeve 121 in the direction of retracting into the lumen 1211 of the sleeve 121, so as to relax the external force applied by the constant force ejector rod.

[0066] In another embodiment, as shown in Figure 4 The overload protection device includes a rubber sheet 13 with elasticity, and the inner mold 112 includes a plurality of inner mold sheets arranged in sequence in the circumferential direction, and the rubber sheet 13 is arranged between each adjacent two inner mold sheets. When the concrete shrinks, the inner mold 112 is subjected to compressive stress, and the rubber sheet 13 can provide a certain deformation when the inner mold 112 is subjected to compressive stress, so as to relax the constraint of the inner mold 112 on the concrete, thereby avoiding the phenomenon of cracking of the wind power tower drum. The thickness of the rubber sheet 13 can be determined by the displacement of the inner mold 112 during the shrinkage of the concrete.

[0067] In another embodiment, as shown inFigure 1 As shown, the overload protection device comprises bottom bolts 14 for connecting the inner mold 112 to the base, the pressure of the bottom bolts 14 is controlled by a torque wrench, and the inner mold 112 is guaranteed to resist the action of 0.1 MPa radial stress under this pressure, so that the mold body 11 will not slide during pouring, and the size of the tower drum is ensured. When the concrete shrinks, the inner mold 112 can slide inward under the action of shrinkage stress, thereby relaxing the dry shrinkage stress in the concrete and avoiding cracking of the concrete.

[0068] The three forms of overload protection devices described above must be provided at the same time to maximize the possibility of avoiding cracking during the production of the wind power tower drum.

[0069] The production system for manufacturing the wind power tower drum specifically comprises the following steps:

[0070] (1) According to the mixing ratio of the concrete required for production, each raw material for manufacturing the wind power tower drum is transported into the concrete mixer through the raw material conveying device for uniform mixing and stirring, and the concrete for pouring the wind power tower drum is produced and prepared, and the spread of the concrete is required to be 550mm-700mm;

[0071] (2) The freshly mixed concrete is poured into the concrete distribution device 2 through the concrete conveying device, and the concrete distribution device 2 simultaneously supplies the concrete to all pouring openings 111, and the concrete is poured into the mold body 11;

[0072] (3) The concrete is allowed to set for a certain period of time, and the stress in the concrete is controlled by the overload protection constant force jack 12 when the concrete shrinks, thereby avoiding the vertical cracking of the wind power tower drum;

[0073] (4) After the concrete reaches the initial strength, the wind power tower drum mold 1 is released in time, and after the concrete reaches the design required strength, the wind power tower drum mold 1 is removed and cured, and the concrete wind power tower drum is obtained.

[0074] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and it cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A system for producing a concrete wind turbine tower, characterized by: The utility model relates to a wind power tower drum pouring system, which comprises a wind power tower drum mold, a concrete distributing device, a concrete mixer and a raw material conveying device. The wind power tower drum mold is provided with a plurality of pouring openings according to the embedded parts. The concrete distributing device comprises a plurality of feeding pipes arranged in parallel, and the outlet of each feeding pipe corresponds to one pouring opening. The concrete mixer is used to mix the raw materials for manufacturing the wind power tower drum to form the concrete for pouring. The raw material conveying device is used to convey the raw materials for manufacturing the wind power tower drum to the inlet of the concrete mixer. The concrete conveying device is used to convey the concrete flowing out of the outlet of the concrete mixer to the concrete distributing device.

2. The system for production of concrete wind turbine towers according to claim 1, characterized in that: The concrete distributing device can be arranged to slide up and down relative to the wind power tower drum mold so that the outlets of the feeding pipes are flush with the pouring openings.

3. The system for production of concrete wind turbine towers of claim 1, wherein: The concrete distributing device further comprises a support and a distributing bin fixedly arranged on the top of the support.

4. The system for production of concrete wind turbine towers according to claim 3, characterized in that: The distributing bin comprises a bin body and a discharging element fixedly arranged in the bin body.

5. The system for production of concrete wind turbine towers of claim 4, wherein: The discharging element is in a conical structure with a small top and a large bottom.

6. The system for production of concrete wind turbine towers of claim 1, wherein: The top of the bin body is open, and the bottom of the bin body is provided with a plurality of discharge openings.

7. The system for production of concrete wind turbine towers of claim 1, wherein: Each discharge opening is circumferentially spaced around the outer periphery of the bottom of the discharging element. The feeding pipes are arranged at the bottom of the bin body and are connected to the discharge openings one by one. The tube cavity of each feeding pipe is in communication with the discharge opening. Each feeding pipe is rotatably arranged at the bottom of the bin body to adjust the feeding distance. The concrete distributing device further comprises a driving mechanism for driving each feeding pipe to rotate relative to the bin body. The driving mechanism comprises a screw rod rotatably arranged on the support, a nut capable of moving up and down along the screw rod in cooperation with the screw rod, and a plurality of connecting rods. Each connecting rod is rotatably connected to the nut at one end and rotatably connected to the feeding pipe at the other end. The concrete distributing device further comprises a vibrator arranged on each feeding pipe. The wind power tower drum mold comprises a mold body and an overload protection device arranged on the mold body. The overload protection device comprises a constant force ejector rod, which comprises a sleeve, an unloading rod, a friction sheet, an adjusting screw and an adjusting rod; one end of the sleeve is provided with a lumen; one end of the unloading rod extends into the lumen, and the unloading rod has a spacing distance between the end extending into the lumen and the end of the lumen; the friction sheet is arranged between the unloading rod and the inner wall of the lumen, and the friction sheet is pressed on the unloading rod; the adjusting screw is threadedly connected on the sleeve, one end of the adjusting screw extends into the lumen and abuts against the friction sheet, so that the friction sheet is pressed on the unloading rod, and a set friction force is generated between the friction sheet and the unloading rod; one end of the adjusting rod is connected to the other end of the sleeve, and the connection length between the adjusting rod and the sleeve can be adjusted. The overload protection device further comprises a rubber sheet, the mold body comprises an inner mold and an outer mold sleeved on the outside of the inner mold, the inner mold comprises a plurality of inner mold sheets arranged in sequence in the circumferential direction, and the rubber sheet is arranged between every two adjacent inner mold sheets. The overload protection device further comprises a bottom bolt for connecting the mold body to the base, and the tightening torque of the bottom bolt is controlled by a torque wrench.

8. The system for production of concrete wind turbine towers of claim 7, wherein: The friction sheets are arranged in multiple in the circumferential direction of the unloading rod, and / or the friction sheets are arranged in multiple in the axial direction of the unloading rod.

9. The system for production of concrete wind turbine towers of claim 7, wherein: The other end of the sleeve is threadedly connected to one end of the adjusting rod, and the threadedly engaged length between the two can be adjusted.

10. The system for production of concrete wind turbine towers of claim 1, wherein: Each pouring opening is arranged at the top of the wind power tower drum mold and is arranged in the circumferential direction.

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