A concrete placing machine for construction

Abstract

The present invention discloses a concrete placing machine for construction, which belongs to the technical field of construction. The concrete placing machine for construction includes a silo box, and the silo box is provided with an adjusting mechanism, a linkage mechanism and a stirring mechanism. After the adjusting mechanism adjusts the area of ​​the discharge port, the movement of the adjusting mechanism when opening or closing the discharge port is converted by the linkage mechanism, and at the same time, the stirring mechanism is driven to stir the material in the silo box. The scheme can change the exposed area of ​​the discharge port through the adjusting mechanism, that is, the discharge amount in the silo box can be changed and reduced, which can meet different needs and improve the quality and efficiency of casting. When the discharge port is exposed or closed each time, the stirring mechanism can stir the concrete in the silo box through the cooperation of the adjusting mechanism and the linkage mechanism, which can avoid the situation that the concrete in the silo box is partially coagulated, and can also make the concrete in the silo box be discharged more smoothly.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and more particularly to a concrete placing machine for building construction. Background Art

[0002] The concrete placing machine is mainly the terminal equipment for pumping concrete in construction. Its function is to deliver the pumped concrete to the casting components or steel bar working surface through the pipe, and to continuously pour the casting parts. It can solve the distribution problem of concrete transportation and also expand the scale of concrete pouring. It is widely used in building construction, high-speed rail construction and other projects.

[0003] At present, the most commonly used concrete placing machines pump concrete into the silo for storage and unloading. When unloading, the concrete is directly discharged through the discharge port, and the discharge amount cannot be changed, so the discharge amount cannot be adjusted according to different pouring and placing requirements; and when discharging, the normal discharge is affected due to partial solidification of concrete in the silo, resulting in poor use effect.

[0004] Therefore, it is necessary to provide a concrete placing boom for construction to solve the above technical problems. Summary of the invention

[0005] The object of the present invention is to provide a concrete placing boom for construction to solve the above technical problems.

[0006] To achieve the above object, the present invention adopts the following technical solution:

[0007] A concrete placing machine for construction, comprising a support frame and a silo box installed below the support frame, a discharge port and a bottom trough connected to the discharge port are provided at the bottom of the silo box, and an adjustment mechanism, a linkage mechanism and a stirring mechanism are provided on the silo box;

[0008] The adjusting mechanism is located inside the bottom trough, and the adjusting mechanism controls the opening area of ​​the discharge port by blocking the discharge port. The linkage mechanism is connected with the adjusting mechanism and the stirring mechanism. The movement of the adjusting mechanism drives the linkage mechanism to drive the stirring mechanism to rotate. The stirring mechanism is located inside the silo box and is used to stir the material in the silo box.

[0009] After the regulating mechanism has adjusted the area of ​​the discharge port, the movement of the regulating mechanism when opening or closing the discharge port is converted by the linkage mechanism, and at the same time drives the stirring mechanism to stir the material in the silo box.

[0010] As a further solution of the present invention: the adjustment mechanism includes a left-right symmetrical baffle and a movable plate, and the baffle and the movable plate are both slidably connected to the inner wall of the bottom trough. A first telescopic member is arranged inside the silo box, and the telescopic end of the first telescopic member is fixedly connected to the outer wall of the movable plate. An adjustment component is arranged between the baffle and the movable plate.

[0011] As a further solution of the present invention: the adjustment assembly includes an adjustment plate arranged between the baffle and the movable plate, the two sides of the adjustment plate are respectively slidably connected to the inside of the baffle and the movable plate, a second telescopic member is fixedly provided between one end of the adjustment plate located inside the baffle and the inner wall of the baffle, a plurality of adjustment holes are opened on the side wall of the adjustment plate, and a fixing hole adapted to the adjustment hole is opened on the outer wall of the movable plate.

[0012] As a further solution of the present invention: the linkage mechanism includes a through groove opened on the side wall of the silo box and communicated with the bottom groove, the inner wall of the through groove is slidably connected with a connecting rod, one end of the connecting rod is fixedly connected to the end of the movable plate, and the other end of the connecting rod is fixedly connected to a toothed plate, the side wall of the silo box is rotatably connected with a first rotating rod, the outer wall of the first rotating rod is fixedly provided with a spur gear meshing with the toothed plate, and a transmission assembly is provided on the top of the silo box.

[0013] As a further solution of the present invention: the transmission assembly includes a support plate fixedly connected to the top of the silo box, a second rotating rod is rotatably connected to the middle of the support plate, one end of the second rotating rod is connected to the first rotating rod through a belt drive, and the other end of the second rotating rod is fixedly connected to the first bevel gear.

[0014] As a further solution of the present invention: the stirring mechanism includes a rotating shaft rotatably connected to the upper wall of the silo box, the upper outer wall of the rotating shaft is fixedly provided with a second bevel gear meshing with the first bevel gear, and the outer wall of the rotating shaft located in the silo box is fixedly provided with multiple stirring plates.

[0015] As a further solution of the present invention: a plurality of guide plates are fixedly provided on the lower outer wall of the rotating shaft, and the guide plates are located inside the discharge port.

[0016] As a further solution of the present invention, it also includes two horizontal guide rails and two vertical guide rails, the two vertical guide rails can slide left and right along the two horizontal guide rails, and the support frame can slide back and forth along the two vertical guide rails.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] 1. This scheme can change the exposed area of ​​the discharge port through the adjustment mechanism, that is, it can change and reduce the discharge amount in the silo box, and then can adjust the discharge amount according to different casting material requirements and different components, which can meet different needs, and greatly avoid the unified caliber and unified discharge amount. The result is that different casting targets cannot achieve an ideal casting effect, and it greatly prevents excessive discharge of casting from causing excessive concrete in the component, and also avoids subsequent excessive manual intervention and cleaning, which reduces waste and can also reduce a lot of labor intensity, and can also improve the quality and efficiency of casting.

[0019] 2. Every time the discharge port is exposed or closed, the stirring mechanism will stir the concrete in the silo box through the cooperation of the adjusting mechanism and the linkage mechanism. On the one hand, it can greatly avoid the situation where the concrete in the silo box will partially solidify and affect the subsequent normal pouring. On the other hand, the stirring mechanism can make the concrete in the silo box be discharged more smoothly, further reducing the inconvenience of discharging the concrete in the silo box, and at the same time it can also increase its discharge speed, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the silo box of the present invention;

[0022] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the silo box from the bottom perspective of the present invention;

[0024] Figure 5 for Figure 4 The enlarged structural diagram at B in the middle;

[0025] Figure 6 for Figure 4 The enlarged structural diagram at C in the middle;

[0026] Figure 7 It is a schematic cross-sectional structure diagram of a baffle and a movable plate in the adjusting mechanism of the present invention;

[0027] Figure 8 for Figure 7 Schematic diagram of the changing morphological structure of the closed and open states before and after adjustment;

[0028] Fig. 9 This is a schematic diagram of the internal structure of the silo box of the present invention;

[0029] Fig.10 It is a schematic diagram of the local three-dimensional structure of the rotating shaft of the present invention.

[0030] Description of the numbers in the figure:

[0031] 1. Silo box; 2. Discharge port; 3. Bottom trough; 4. Adjustment mechanism; 401. Baffle; 402. Moving plate; 403. First telescopic member; 5. Linkage mechanism; 501. Through slot; 502. Connecting rod; 503. Tooth plate; 504. First rotating rod; 505. Straight gear; 6. Stirring mechanism; 601. Rotating shaft; 602. Second bevel gear; 603. Stirring plate; 7. Adjustment plate; 8. Second telescopic member; 9. Adjustment hole; 10. Support plate; 11. Second rotating rod; 12. Belt; 13. First bevel gear; 14. Guide plate; 15. Horizontal guide rail; 16. Vertical guide rail; 17. Support frame; 18. Third telescopic member; 19. Slide rod; 20. Moving slot; 21. Auxiliary stirring plate. DETAILED DESCRIPTION

[0032] Embodiment 1:

[0033] See also Figure 1-2 , Figure 4-5 and Figure 7-8 A concrete placing machine for construction includes a support frame 17 and a silo box 1 installed thereunder. A discharge port 2 and a bottom trough 3 connected to the discharge port 2 are provided at the bottom of the silo box 1. An adjusting mechanism 4, a linkage mechanism 5 and a stirring mechanism 6 are provided on the silo box 1. The adjusting mechanism 4 is located inside the bottom trough 3. The adjusting mechanism 4 controls the opening area of ​​the discharge port 2 by blocking the discharge port. The linkage mechanism 5 is connected to the adjusting mechanism 4 and the stirring mechanism 6. The movement of the adjusting mechanism 4 drives the linkage mechanism 5 to drive the stirring mechanism 6 to rotate. The stirring mechanism 6 is located inside the silo box 1 and is used to stir the material in the silo box 1. After the adjusting mechanism 4 adjusts the area of ​​the discharge port 2, the movement of the adjusting mechanism 4 when opening or closing the discharge port 2 is converted by the linkage mechanism 5, and at the same time drives the stirring mechanism 6 to stir the material in the silo box 1.

[0034] The adjusting mechanism 4 includes a left-right symmetrical baffle 401 and a movable plate 402, both of which are slidably connected to the inner wall of the bottom groove 3, and a first telescopic member 403 is arranged inside the silo box 1. In the present application, the first telescopic member 403 adopts an electric telescopic rod, and the telescopic end of the first telescopic member 403 is fixedly connected to the outer wall of the movable plate 402. An adjustment component is arranged between the baffle 401 and the movable plate 402, and the adjustment component includes an adjustment plate 7 arranged between the baffle 401 and the movable plate 402. The two sides of the adjustment plate 7 are respectively slidably connected to the inside of the baffle 401 and the movable plate 402, and a second telescopic member 8 is fixedly arranged between one end of the adjustment plate 7 located in the baffle 401 and the inner wall of the baffle 401. The second telescopic member 8 in the present application adopts a spring, and a plurality of adjustment holes 9 are opened on the side wall of the adjustment plate 7, and a fixing hole adapted to the adjustment hole 9 is opened on the outer wall of the movable plate 402.

[0035] During use, when pouring is required, the first telescopic member 403 is activated to drive the moving plate 402 to retract, that is, the moving plates 402 on both sides move away from each other, and the moving plate 402 moves the baffle 401 through the adjustment plate 7, and the material outlet 2 between the two baffles 401 can be gradually exposed for pouring, which saves time and effort and is safe and efficient. After pouring is completed, the first telescopic member 403 can be activated again to drive the moving plate 402 and the baffle 401 to extend, so that the two baffles 401 are close to each other and closed to seal the material outlet 2.

[0036] When different discharge volumes are required when casting different components or casting surfaces, here we take the need to reduce the opening range of the discharge port 2 during casting as an example, that is, the distance between the two baffles 401 becomes smaller during casting. Specifically: when the two baffles 401 are closed, first loosen the fixing bolts on the movable plate 402 so that the bolts move out of the fixing holes and the adjustment holes 9, and then slide the adjustment plate 7 toward the inside of the baffle 401. The adjustment plate 7 will move outward from the movable plate 402 at the same time. At this time, the adjustment plate 7 will further compress the second telescopic member 8. After the movement is completed, the fixing bolts are inserted into the fixing holes and fixed to the adjustment holes 9 to fix the adjustment plate 7. That is, Figure 8 The closed state A in the figure is changed to the closed state B. Then, during pouring, the first telescopic member 403 drives the moving plate 402 and the baffle 401 to move. When the moving plate 402 drives the adjustment plate 7 to retract, the second telescopic member 8 is partially retracted, and the adjustment plate 7 first slides a distance inside the baffle 401. After reaching the initial position, the adjustment plate 7 drives the baffle 401 to move again. Then, the two closed baffles 401 move away from each other and open. However, the distance between the two baffles 401 is smaller than before the adjustment. The state at this time is Figure 8The state of the open state B in the adjustment, that is, the distance of retraction is shorter than that of the open state A before adjustment, at this time, the exposed area of ​​the discharge port 2 is changed, that is, the discharge amount in the silo box 1 is reduced. When the two baffles 401 are opened, the operation is the same as above. After the pouring is completed, when the first telescopic member 403 closes the baffles 401 on both sides, the two baffles 401 will contact earlier than before, and then the adjustment plate 7 will continue to move toward the inside of the baffle 401 and compress the second telescopic member 8, and then open it again as described above, and vice versa. It can be seen from this that the present application can change the amount of concrete discharge, and then the discharge amount can be adjusted according to different casting cloth requirements and different components, which can meet different needs, greatly avoid the unified caliber and unified discharge amount causing different casting targets to fail to achieve an ideal casting effect, greatly prevent the pouring discharge from being too much and causing too much concrete in the component, and avoid subsequent excessive manual intervention in cleaning, reducing waste while also reducing a large amount of labor intensity, and at the same time improving the quality and efficiency of casting, and being able to better adapt to the market.

[0037] Each time the baffles 401 on both sides are opened or closed, the first telescopic member 403 will drive the movable plate 402 to move, and the linkage mechanism 5 will cooperate to enable the stirring mechanism 6 to stir the concrete in the silo box 1. On the one hand, it can greatly prevent the concrete in the silo box 1 from partially solidifying and affecting the subsequent normal pouring. On the other hand, when the baffle 401 is opened to discharge the material, the stirring mechanism 6 enables the concrete in the silo box 1 to be discharged more smoothly, further reducing the inconvenience of discharging the concrete in the silo box 1, and at the same time, it can also increase its discharge speed, and the use effect is good.

[0038] In this embodiment, preferably, please refer to Figure 2-6 and Fig. 9 The linkage mechanism 5 includes a through groove 501 opened on the side wall of the silo box 1 and communicated with the bottom groove 3, a connecting rod 502 is slidably connected to the inner wall of the through groove 501, one end of the connecting rod 502 is fixedly connected to the end of the movable plate 402, and the other end of the connecting rod 502 is fixedly connected to the toothed plate 503, a first rotating rod 504 is rotatably connected to the side wall of the silo box 1, a spur gear 505 meshing with the toothed plate 503 is fixedly provided on the outer wall of the first rotating rod 504, a transmission assembly is provided on the top of the silo box 1, the transmission assembly includes a support plate 10 fixedly connected to the top of the silo box 1, a second rotating rod 11 is rotatably connected to the middle part of the support plate 10, one end of the second rotating rod 11 is connected to the first rotating rod 504 through a belt 12, and the other end of the second rotating rod 11 is fixedly connected to the first bevel gear 13. The stirring mechanism 6 includes a rotating shaft 601 rotatably connected to the upper wall of the silo box 1 , a second bevel gear 602 meshing with the first bevel gear 13 is fixedly disposed on the upper outer wall of the rotating shaft 601 , and a plurality of stirring plates 603 are fixedly disposed on the outer wall of the rotating shaft 601 located inside the silo box 1 .

[0039] Each time the baffles 401 on both sides are opened or closed, the first telescopic member 403 drives the movable plate 402 to move, and the movable plate 402 drives the connecting rod 502 and the tooth plate 503 to move when moving, and the tooth plate 503 drives the spur gear 505 and the first rotating rod 504 to rotate when moving, and the rotation of the first rotating rod 504 drives the second rotating rod 11 to rotate through the belt 12, and the second rotating rod 11 drives the rotating shaft 601 to rotate through the engagement of the first bevel gear 13 and the second bevel gear 602, and when the rotating shaft 601 rotates, it drives the stirring plate 603 to rotate to stir the concrete in the silo box 1, and the stirring of the stirring plate 603 can greatly prevent the concrete in the silo box 1 from partial coagulation, and the stirring of the stirring plate 603 can make the concrete in the silo box 1 be discharged more smoothly.

[0040] In this embodiment, preferably, please refer to Figure 1 , and also includes two transverse rails 15 and two vertical rails 16. The two vertical rails 16 can slide left and right along the two transverse rails 15, and the support frame 17 can slide forward and backward along the two vertical rails 16. The transverse rails 15, the vertical rails 16, the support frame 17 and the silo box 1 can be installed first, and then when pouring materials, the vertical rails 16 can be slid along the transverse rails 15 to adjust the left and right position of the silo box 1, and the support frame 17 can be slid along the vertical rails 16 to adjust the front and back position of the silo box 1, so that the silo box 1 can be moved to different positions and can cover a large range of the construction site for pouring materials, which is not only convenient for pouring materials, saving time and effort, and low labor intensity, but also can greatly improve the efficiency of concrete pouring.

[0041] Embodiment 2:

[0042] See also Figure 9-10 On the basis of the first embodiment, a plurality of guide plates 14 are fixedly arranged on the lower outer wall of the rotating shaft 601, and the guide plates 14 are located inside the discharge port 2. When the rotating shaft 601 rotates, the guide plates 14 are also driven to rotate. The guide plates 14 rotate inside the discharge port 2, which can not only stir the discharge port 2 to make it better to discharge and improve the material distribution effect, but also stir the concrete in the discharge port 2, which can effectively prevent the concrete from accumulating in the discharge port 2 and failing to be effectively poured.

[0043] Embodiment three:

[0044] See also Figure 1-2 and Fig.10On the basis of the first embodiment, the silo box 1 is connected to the support frame 17 through the third telescopic member 18. In the present application, the third telescopic member 18 adopts a hydraulic cylinder. The rotating shaft 601 has an inner groove and is slidably connected with a slide bar 19. The upper end of the slide bar 19 is rotatably connected to the bottom of the support frame 17. The outer wall of the rotating shaft 601 has a moving groove 20 connected to the inner groove. The inner wall of the moving groove 20 is slidably connected with an auxiliary stirring plate 21 fixed to the outer wall of the slide bar 19. The third telescopic member 18 can be used to drive the silo box 1 to rise or fall, so that the silo box 1 is at an appropriate height for pouring and distributing materials. When the third telescopic member 18 drives the silo box 1 to rise or fall, the slide bar 19 will also slide up and down along the inner wall of the rotating shaft 601, and the slide bar 19 will drive the auxiliary stirring plate 21 to move up and down along the moving groove 20. The auxiliary stirring plate 21 can be used to stir the concrete in the silo box 1 in the up and down directions, further improving the discharge effect of the concrete in the silo box 1 and further reducing the occurrence of coagulation.

[0045] Working principle: When in use, first install the horizontal guide rail 15, the vertical guide rail 16, the support frame 17 and the silo box 1, and then adjust the position of the silo box 1 in the front and rear directions when pouring materials. When the silo box 1 is in the specified position, when pouring materials, start the first telescopic member 403 to drive the moving plate 402 to contract, that is, the moving plates 402 on both sides move in the direction away from each other, and the moving plate 402 will move the baffle 401 through the adjustment plate 7, that is, the two baffles 401 will eventually move away from each other, and the discharge port 2 between the two baffles 401 can be gradually revealed. Finally, the two baffles 401 will stop at a position, and the concrete in the silo box 1 will be poured from the silo box 1 along the discharge port 2 to the bottom, which saves time and effort and is safe and efficient. After pouring is completed, the first telescopic member 403 can be started again to drive the moving plate 402 and the baffle 401 to extend, so that the two baffles 401 are close to each other and closed to seal the discharge port 2.

[0046] When different discharge volumes are required when casting different components or casting surfaces, here we take the need to reduce the opening range of the discharge port 2 during casting as an example, that is, the distance between the two baffles 401 becomes smaller during casting. First, when there is concrete in the silo box 1, it is necessary to operate after the two baffles 401 are closed. When there is no concrete in the silo box 1, it can be operated after the two baffles 401 are opened. Specifically: when the two baffles 401 are closed, first loosen the fixing bolts on the movable plate 402 so that the bolts move out of the fixing holes and the adjustment holes 9, and then slide the adjustment plate 7 toward the inside of the baffle 401. The adjustment plate 7 will move outward from the movable plate 402 at the same time. At this time, the adjustment plate 7 will further compress the second telescopic member 8. After the movement is completed, the fixing bolts are inserted into the fixing holes and fixed to the adjustment holes 9 to fix the adjustment plate 7. That is, Figure 8The closed state A in the figure is changed to the closed state B. Then, during pouring, the first telescopic member 403 drives the moving plate 402 and the baffle 401 to move. When the moving plate 402 drives the adjustment plate 7 to retract, the second telescopic member 8 is partially retracted, and the adjustment plate 7 first slides a distance inside the baffle 401. After reaching the initial position, the adjustment plate 7 drives the baffle 401 to move again. Then, the two closed baffles 401 move away from each other and open. However, the distance between the two baffles 401 is smaller than before the adjustment. The state at this time is Figure 8 The state of the open state B in the adjustment, that is, the retracted distance is shorter than that of the open state A before adjustment, at this time, the exposed area of ​​the discharge port 2 is changed, that is, the discharge amount in the silo box 1 is reduced. When the two baffles 401 are opened, the operation is the same as above. After the pouring is completed, when the first telescopic member 403 closes the baffles 401 on both sides, the two baffles 401 will contact earlier than before, and then the adjustment plate 7 will continue to move toward the inside of the baffle 401 and compress the second telescopic member 8, and then open again as described above. Vice versa, when the distance between the two baffles 401 is to be increased, the adjustment plate 7 can be moved toward the inside of the movable plate 402, and moved toward the outside of the baffle 401, which can be known by the same reasoning as above.

[0047] When the baffles 401 on both sides are opened or closed each time, the first telescopic member 403 will drive the moving plate 402 to move, and the moving plate 402 will drive the connecting rod 502 and the tooth plate 503 to move when moving, and the tooth plate 503 will drive the spur gear 505 and the first rotating rod 504 to rotate when moving, and the rotation of the first rotating rod 504 will drive the second rotating rod 11 to rotate through the belt 12, and the second rotating rod 11 will drive the rotating shaft 601 to rotate through the engagement of the first bevel gear 13 and the second bevel gear 602, and when the rotating shaft 601 rotates, it will drive the stirring plate 603 to rotate to stir the concrete in the silo box 1, which greatly avoids the situation where the concrete in the silo box 1 partially solidifies and affects the subsequent normal pouring, and at the same time, the concrete in the silo box 1 can be discharged more smoothly.

Claims

1. A concrete placing machine for construction, comprising a support frame (17) and a silo box (1) installed below the support frame, characterized in that: The bottom of the silo box (1) is provided with a discharge port (2) and a bottom groove (3) connected to the discharge port (2); the silo box (1) is provided with an adjustment mechanism (4), a linkage mechanism (5) and a stirring mechanism (6); The regulating mechanism (4) is located inside the bottom trough (3); the regulating mechanism (4) controls the opening area of ​​the discharge port (2) by blocking the discharge port; the linkage mechanism (5) is connected to the regulating mechanism (4) and the stirring mechanism (6); the movement of the regulating mechanism (4) drives the linkage mechanism (5) to drive the stirring mechanism (6) to rotate; the stirring mechanism (6) is located inside the silo box (1) and is used to stir the material in the silo box (1); After the adjusting mechanism (4) has adjusted the area of ​​the discharge port (2), the movement of the adjusting mechanism (4) when opening or closing the discharge port (2) is converted by the linkage mechanism (5), thereby simultaneously driving the stirring mechanism (6) to stir the material in the silo box (1); The adjustment mechanism (4) comprises a left-right symmetrical baffle plate (401) and a movable plate (402), the baffle plate (401) and the movable plate (402) are both slidably connected to the inner wall of the bottom groove (3), a first telescopic member (403) is arranged inside the silo box (1), the telescopic end of the first telescopic member (403) is fixedly connected to the outer wall of the movable plate (402), and an adjustment component is arranged between the baffle plate (401) and the movable plate (402); The adjustment assembly comprises an adjustment plate (7) arranged between the baffle plate (401) and the movable plate (402); two sides of the adjustment plate (7) are respectively slidably connected to the inside of the baffle plate (401) and the movable plate (402); a second telescopic member (8) is fixedly arranged between one end of the adjustment plate (7) located inside the baffle plate (401) and the inner wall of the baffle plate (401); a plurality of adjustment holes (9) are provided on the side wall of the adjustment plate (7); and a fixing hole adapted to the adjustment hole (9) is provided on the outer wall of the movable plate (402); The linkage mechanism (5) comprises a through groove (501) which is opened on the side wall of the silo box (1) and communicates with the bottom groove (3); a connecting rod (502) is slidably connected to the inner wall of the through groove (501); one end of the connecting rod (502) is fixedly connected to the end of the movable plate (402); the other end of the connecting rod (502) is fixedly connected to a toothed plate (503); a first rotating rod (504) is rotatably connected to the side wall of the silo box (1); a spur gear (505) meshing with the toothed plate (503) is fixedly provided on the outer wall of the first rotating rod (504); and a transmission assembly is provided on the top of the silo box (1); The transmission assembly comprises a support plate (10) fixedly connected to the top of the silo box (1), a second rotating rod (11) being rotatably connected to the middle of the support plate (10), one end of the second rotating rod (11) being transmission-connected to the first rotating rod (504) via a belt (12), and the other end of the second rotating rod (11) being fixedly connected to the first bevel gear (13); The stirring mechanism (6) comprises a rotating shaft (601) rotatably connected to the upper wall of the silo box (1); a second bevel gear (602) meshing with the first bevel gear (13) is fixedly provided on the upper outer wall of the rotating shaft (601); and a plurality of stirring plates (603) are fixedly provided on the outer wall of the rotating shaft (601) located inside the silo box (1).

2. A concrete placing boom for construction according to claim 1, characterized in that: A plurality of guide plates (14) are fixedly disposed on the lower outer wall of the rotating shaft (601), and the guide plates (14) are located inside the discharge port (2).

3. A concrete placing boom for construction according to claim 2, characterized in that: It also comprises two transverse guide rails (15) and two vertical guide rails (16), wherein the two vertical guide rails (16) can slide left and right along the two transverse guide rails (15), and the support frame (17) can slide forward and backward along the two vertical guide rails (16).

4. A concrete placing boom for construction according to claim 3, characterized in that: The silo box (1) is connected to the support frame (17) via a third telescopic member (18); the rotating shaft (601) is provided with an inner groove and is slidably connected to a slide rod (19); the upper end of the slide rod (19) is rotatably connected to the bottom of the support frame (17); the outer wall of the rotating shaft (601) is provided with a movable groove (20) communicating with the inner groove; the inner wall of the movable groove (20) is slidably connected to an auxiliary stirring plate (21) fixed to the outer wall of the slide rod (19).

Images