A spreader base device for installation in an elevator shaft

Abstract

The utility model discloses a cloth machine foundation device installed in elevator shaft, including cloth subassembly and the mobile seat of sliding joint in the same elevation reservation hole department in elevator, still include: fixed base, fixed base detachable installation is above mobile seat, the lower part detachable installation of support frame body is in fixed base top, and support frame body is by at least one support frame unit and is composed, and each support frame unit is connected and forms support frame body, and the connection component is connected on each support frame unit for installing the scaffold, wherein, cloth subassembly detachable installation is in support frame body top, and the feed pipe of cloth subassembly passes through mobile seat along support frame body inside and is connected with external feeding equipment. The utility model is safe and reliable, easy to operate, can realize the construction efficiency of greatly promoting, safety and quality, satisfies the demand of modern building construction to equipment high efficiency, accurate, nimble, safe.

Description

Technical Field

[0001] This utility model relates to a safety construction component for elevator shafts, specifically a base device for a concrete placing boom installed in an elevator shaft, belonging to the field of building construction technology. Background Technology

[0002] In modern construction, concrete placing booms are an important piece of equipment widely used for concrete conveying and placement, especially in large-scale construction projects. Concrete placing booms can significantly improve construction efficiency, reduce manual labor intensity, and ensure uniform concrete distribution, thereby improving construction quality. However, in certain construction environments, traditional placing boom installation methods face many challenges, especially within elevator shafts of high-rise buildings.

[0003] The installation process of traditional concrete placing booms is cumbersome, often requiring a large amount of manpower and time, increasing the difficulty of construction. Secondly, when installing scaffolding, the narrow space and height differences in elevator shafts make scaffolding erection very inconvenient, limiting the operating space for construction workers and easily creating safety hazards. In addition, traditional concrete placing boom installation methods are usually fixed in height and cannot be flexibly adjusted, resulting in poor adaptability to different floor heights or complex working conditions, and failing to meet the ever-changing needs of high-rise building construction.

[0004] A search revealed that Chinese utility model patent CN203684694U discloses a connecting device for installing a concrete placing boom inside an elevator shaft. The device includes an elevator shaft and a concrete placing boom. Pre-drilled holes for mounting bases are provided at the same elevation on two symmetrical shear walls within the elevator shaft. The bases are inserted into these holes, and a support frame is bolted to the bases. The concrete placing boom is connected to the support frame via the connecting device. However, this connecting device has limitations in terms of flexibility in adjusting the height of the support frame during use. Furthermore, erecting scaffolding on the support frame is time-consuming and labor-intensive, reducing construction efficiency and increasing construction costs and safety risks.

[0005] Therefore, there is an urgent need for a concrete placing boom foundation device installed in elevator shafts to solve the above problems and improve the safety, convenience and efficiency of the construction process. Summary of the Invention

[0006] In view of the many defects and shortcomings of the above-mentioned background technology, this utility model has made improvements and innovations, aiming to provide a safe, reliable and easy-to-operate elevator shaft safety construction component, which solves the limitations of traditional equipment in elevator shafts, solves the problem of difficult installation of traditional concrete placing booms, and greatly improves construction efficiency, safety and quality, thus meeting the needs of modern building construction for efficient, precise, flexible and safe equipment.

[0007] To solve the above problems and achieve the above-mentioned invention objectives, this utility model provides a concrete placing boom foundation device installed in an elevator shaft, which is achieved by adopting the following design structure and the following technical solution:

[0008] A fabric placing boom base device installed in an elevator shaft includes a movable seat and a fabric placing assembly that are slidably engaged with a pre-drilled hole at the same elevation within the elevator shaft, and further includes:

[0009] The fixed base is detachably mounted on top of the movable base;

[0010] The support frame has a lower part that can be detachably mounted on the top of the fixed base. The support frame consists of at least one support frame unit, and the support frame units are connected to each other to form the support frame body.

[0011] Connection components are attached to each support frame unit for installing the scaffold;

[0012] The fabric assembly is detachably installed on the top of the support frame, and the fabric assembly's feed pipe passes through the movable seat along the inside of the support frame and connects to the external feeding equipment.

[0013] Preferably, the fixing base includes a mounting base and fixing legs extending and connected to the four corners of the mounting base, wherein each fixing leg is fixedly connected to the mounting base by a reinforcing plate.

[0014] Preferably, the mounting base has a square frame structure, with diagonal rods connected to the four vertical openings of the mounting base. The connector at the bottom opening of the mounting base is through-hole in the middle, and the top of the mounting base has multiple through holes adapted to the support frame for installation.

[0015] Preferably, the fixed leg is a telescopic structure; the fixed leg includes:

[0016] A fixed tube, one end of which is fixedly connected to the mounting base, and multiple sets of fixed tube connection holes are opened through the fixed tube;

[0017] The telescopic tube slides and is snapped into the fixed tube. The telescopic tube has multiple sets of telescopic tube connection holes that are adapted to the connection holes of the fixed tube.

[0018] A fixing block is fixedly connected to the non-connecting end of the telescopic tube, and a fixing hole is provided through the fixing block.

[0019] The fixed block is connected to the movable base by a fastener.

[0020] Preferably, the support frame unit has a square frame structure, and inclined plates are connected to the vertical openings on all four sides of the support frame unit. Multiple sets of support frame connection holes are opened on the upper and lower end faces of the support frame unit. The various support frame units are connected to each other by locking members to form the support frame body.

[0021] Preferably, the connection component includes:

[0022] The first connecting sleeve assembly is connected to the vertically opposite sides of the support frame unit and is used to connect the first support rod;

[0023] The second connecting sleeve assembly is connected to the other vertical opposite sides of the support frame unit and is used to connect the second support rod;

[0024] The first connecting sleeve group and the adjacent second connecting sleeve group are staggered.

[0025] Preferably, the first connecting sleeve group includes sleeves that are laterally connected to the four corners of the support frame unit, wherein the second connecting sleeve group has the same structure as the first connecting sleeve group but is set at a different height.

[0026] Preferably, each sleeve of the first connecting sleeve group and the second connecting sleeve group is also threadedly connected to a tightening member, which can be rotated to lock the tightness of the scaffold support rod installed in the sleeve.

[0027] Preferably, the movable seat is provided with several positioning wheels that are adapted to the reserved holes in the elevator shaft. The movable seat is provided with a warning component to determine whether the positioning wheels are located in the reserved holes or in a lifting state. The movable seat has a through opening in the middle that is adapted to the material conveying pipe, and multiple movable seat connection holes adapted to the fixed legs are provided at the four diagonals of the movable seat.

[0028] Preferably, the fabric assembly includes:

[0029] Mounting plate, which can be detachably mounted on top of the support frame via locking devices;

[0030] Rotary seat, the rotating seat is installed at the center of the upper part of the mounting plate;

[0031] A rotating frame, which is connected to a rotating base;

[0032] The conveying pipe is connected to the rotating frame in the middle, and one end of the conveying pipe is connected to the external feeding equipment;

[0033] The nozzle is rotatably connected to the other end of the feed pipe.

[0034] Working principle:

[0035] In use, the operator only needs to use the lifting device to lift this utility model into several elevator shaft reserved holes of the specified height;

[0036] Then, the operator starts the feeding equipment (7), and the material will be transported along the conveying pipe (64) to the nozzle (65), and the operator can then spread the material on the layer.

[0037] Immediately afterwards, as time goes by, after the fabric is laid on this layer, the feeding equipment (7) is turned off. Then, the operator starts the lifting device again to lift the present invention into the reserved hole of the elevator shaft on the next floor, and then starts the feeding equipment (7) to carry out the fabric laying work on this layer again.

[0038] Finally, repeat the above steps over time until the fabric work for the entire elevator shaft (8) is completed.

[0039] After the entire fabric work is completed, the operator first disconnects the connection between the rotating frame (63) or the moving seat (1) and the pull rope. Finally, the utility model can be moved away from the elevator shaft (8) by the hoisting equipment.

[0040] When erecting scaffolding (5), according to the erection requirements, the operator inserts the first support rod (51) into the first connecting sleeve group (41) of equal height, and then inserts the second support rod (52) into the second connecting sleeve group (42) of equal height. After adjusting their length and distance, the support rod is locked by the top tightening part of the sleeve. Finally, the vertical support rod or several adjacent support rods are connected by the connecting buckle. The erection of scaffolding (5) can be completed quickly and the scaffolding (5) is safe and stable.

[0041] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0042] 1. This utility model is safe, reliable, and easy to operate. It can solve the limitations of traditional equipment in elevator shafts and solve the problem of difficult installation of traditional concrete placing booms. It can greatly improve construction efficiency, safety and quality, and meet the needs of modern building construction for equipment that is efficient, precise, flexible and safe.

[0043] 2. The fixed base of this utility model can be firmly connected to the connecting hole of the movable base, ensuring the firmness and safety of the connection; at the same time, the fixed leg adopts a telescopic design, which can flexibly adapt to a variety of different sizes of movable bases, greatly improving the convenience and adaptability of installation, and ensuring that the installation process is faster, safer, more stable and more efficient.

[0044] 3. The support frame of this utility model adopts a modular design, giving it high flexibility and scalability. The support frame units are connected via standardized interfaces, enabling rapid assembly and disassembly, greatly simplifying the installation and maintenance process. This design not only improves operational efficiency but also allows for customization to meet different usage needs, ensuring stable support performance in various environments. Furthermore, the modular design makes storage and transportation of the support frame more convenient, saving space and costs, while reducing the need to replace the entire frame due to equipment damage, thus improving economic efficiency and sustainability.

[0045] 4. The connecting components of this utility model can be tightly connected with the scaffolding supports, effectively enhancing the overall stability of the scaffolding and ensuring that the entire structure is not prone to tilting or displacement during use, greatly improving construction safety; at the same time, it simplifies the installation process, allowing for quick installation and fixation with the scaffolding supports, reducing cumbersome installation steps, significantly shortening construction preparation time, improving construction efficiency, and reducing labor costs.

[0046] 5. The connecting component of this utility model is compatible with various models of scaffolding support rods and has high versatility. After connection, it can be locked by the tightening part connected by the thread on the corresponding sleeve. It effectively improves the disassembly and maintenance process of the scaffolding system, has high economy and practicality, and is especially suitable for complex or high-requirement construction environments. Attached Figure Description

[0047] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0048] Figure 1 This is one of the usage state diagrams of this utility model;

[0049] Figure 2 This is the second diagram showing the usage state of this utility model;

[0050] Figure 3 This is a partial usage diagram of this utility model;

[0051] Figure 4 This is a schematic diagram of the overall structure of this utility model;

[0052] Figure 5 This is an exploded view of the entire utility model;

[0053] Figure 6 This is a partial exploded view of this utility model;

[0054] Figure 7 This is a schematic diagram of the structure of the movable base of this utility model;

[0055] Figure 8This is a schematic diagram showing the connection relationship between the support frame unit and the connecting assembly of this utility model;

[0056] In the figure, the numbers are: 1—moving seat, 11—positioning wheel, 12—through port, 13—moving seat connection hole;

[0057] 2—Fixed base, 21—Mounting base, 22—Fixed leg, 221—Fixed tube, 222—Telescopic tube, 223—Fixed block, 224—Fixed component, 23—Reinforcing plate;

[0058] 3—Support frame body, 31—Support frame unit;

[0059] 4—Connecting assembly; 41—First connecting sleeve assembly; 42—Second connecting sleeve assembly;

[0060] 5—Scaffolding, 51—First support pole, 52—Second support pole;

[0061] 6—Fabric assembly, 61—Mounting plate, 62—Rotating seat, 63—Rotating frame, 64—Feeding pipe, 65—Spray pipe;

[0062] 7—Feeding equipment;

[0063] 8—Elevator shaft. Detailed Implementation

[0064] To make the technical means, inventive features, objectives, and effects of this utility model readily understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0065] As per the instruction manual Figures 1 to 8 As shown, a base device for a concrete placing machine installed in an elevator shaft includes a concrete placing assembly 6 and a movable seat 1 that slides and engages with a pre-drilled hole at the same elevation within the elevator shaft 8. It also includes:

[0066] Fixed base 2, which is detachably installed above the movable base 1;

[0067] The support frame 3 has its lower part detachably mounted on the top of the fixed base 2. The support frame 3 is composed of at least one support frame unit 31, and the support frame units 31 are connected to each other to form the support frame body.

[0068] Connection component 4 is connected to each support frame unit 31 and is used to install scaffolding 5;

[0069] The fabric assembly 6 is detachably installed on the top of the support frame 3, and the feed pipe 64 of the fabric assembly 6 passes through the movable seat 1 along the inside of the support frame 3 and is connected to the external feeding device 7.

[0070] Furthermore, the fixing base 2 includes a mounting base 21 and fixing legs 22 extending and connected to the four corners of the mounting base 21, wherein each fixing leg 22 is fixedly connected to the mounting base 21 by a reinforcing plate 23.

[0071] Specifically, the mounting base 21 has a square frame structure, and diagonal rods are connected to the four vertical openings of the mounting base 21. The connector at the bottom opening of the mounting base 21 is through the middle, and multiple through holes adapted to the support frame 3 are opened through the top of the mounting base 21.

[0072] Specifically, the fixed leg 22 is a telescopic structure; the fixed leg 22 includes:

[0073] A fixing tube 221 is fixedly connected to the mounting base 21 at one end, and multiple sets of fixing tube connection holes are opened through the fixing tube 221.

[0074] Telescopic tube 222 is slidably snapped into the fixed tube 221. The telescopic tube 222 has multiple sets of telescopic tube connection holes that are adapted to the connection holes of the fixed tube.

[0075] A fixing block 223 is fixedly connected to the non-connecting end of the telescopic tube 222, and a fixing hole is provided through the fixing block 223.

[0076] The fixing block 223 is connected to the movable base 1 by the fixing member 224.

[0077] In this utility model, a limiting member is also provided on the fixed leg 22 for limiting the movement of the fixed tube 221 and the telescopic tube 222.

[0078] Furthermore, the support frame unit 31 has an overall square frame structure, and inclined plates are connected to the vertical openings on all four sides of the support frame unit 31. Multiple sets of support frame connection holes are opened on the upper and lower end faces of the support frame unit 31. The various support frame units 31 are connected to each other through locking members to form the support frame body.

[0079] Furthermore, the connection component 4 includes:

[0080] The first connecting sleeve group 41 is connected to the vertically opposite sides of the support frame unit 31 and is used to connect the first support rod 51.

[0081] The second connecting sleeve assembly 42 is connected to the other vertical opposite sides of the support frame unit 31 and is used to connect the second support rod 52.

[0082] The first connecting sleeve group 41 and the adjacent second connecting sleeve group 42 are staggered.

[0083] In this utility model, the two sets of first connecting sleeve groups 41 are positioned higher than the two sets of second connecting sleeve groups 42 to facilitate the installation of scaffold support rods without causing conflict.

[0084] Specifically, the first connecting sleeve group 41 includes sleeves that are respectively horizontally connected to the four corners of the support frame unit 31. The second connecting sleeve group 42 has the same structure as the first connecting sleeve group 41, but is set at a different height.

[0085] In this invention, two sleeves of the same height and on the same plane form a group and are used to install the same scaffolding support rod.

[0086] Specifically, each sleeve of the first connecting sleeve group 41 and the second connecting sleeve group 42 is also threaded with a tightening member. By rotating the tightening member, the tightness of the scaffold support rod installed inside the sleeve can be locked.

[0087] Furthermore, the movable seat 1 is provided with several positioning wheels 11 that are adapted to the reserved holes in the elevator shaft. The movable seat 1 is provided with a warning component to determine whether the positioning wheels 11 are located in the reserved holes or in a lifting state. The movable seat 1 has a through opening 12 adapted to the material conveying pipe 64 in the middle. Multiple movable seat connection holes 13 adapted to the fixed legs 22 are provided at the four diagonals of the movable seat 1.

[0088] In this utility model, the movable seat 1 can be fitted into the reserved hole of the elevator shaft 8, and can automatically detach from the original reserved hole under the traction of the lifting device. When it rises to the reserved hole of the next floor, it can automatically spring back and lock into the reserved hole. At the same time, the warning component on the movable seat 1 can provide light and voice prompts to indicate whether the positioning wheel 11 is located in the reserved hole or in the state of sliding contact with the inner wall of the elevator shaft.

[0089] Furthermore, the fabric assembly 6 includes:

[0090] Mounting plate 61 is detachably mounted on the top of support frame 3 via locking components;

[0091] Rotary seat 62 is installed at the upper center of mounting plate 61;

[0092] Rotating frame 63 is connected to rotating base 62;

[0093] The middle part of the conveying pipe 64 is connected to the rotating frame 63, and one end of the conveying pipe 64 is connected to the external feeding device 7.

[0094] The nozzle 65 is rotatably connected to the other end of the feed pipe 64.

[0095] In summary, the above-mentioned design structure for a concrete placing boom base installed in an elevator shaft needs to be manufactured and installed as a backup before it can be used.

[0096] During assembly:

[0097] The operator first adjusts each fixed leg 22 on the fixed seat 2 to fit and install it with the movable seat 1 according to the size of the movable seat 1. After the adjustment is completed, the fixed tube 221 and the telescopic tube 222 are fixed by the limit pin. Then, the operator fixes the four fixed legs 22 to the corresponding movable seat connection hole 13 by passing the fixing piece 224 through the fixing block 223.

[0098] Then, the operator determines the specific height of the support frame 3 according to the floor height of the elevator shaft 8, and then selects the number of support frame units 31 according to the specific height. Then, the support frame units 31 are connected to each other by locking parts to form the support frame body. Next, the bottom of the support frame 3 is aligned with the through hole of the mounting seat 21 on the fixed seat 2 by hoisting tools. Then, the support frame 3 is securely installed on the fixed seat 2 by fasteners.

[0099] Next, the mounting plate 61 at the bottom of the fabric assembly 6 is securely connected to the top of the support frame 3 using fasteners;

[0100] Finally, the material feeding pipe 64 of the fabric assembly 6 is passed through the opening 12 of the support frame 3 and the movable seat 1 in sequence and then connected to the external feeding device 7.

[0101] Before use, the operator first moves the device from the opening of the elevator shaft 8 into the elevator shaft 8, and connects the lifting device to the rotating frame 63 or the moving seat 1 by pulling rope.

[0102] In use, the operator uses the lifting device to lift this utility model into several elevator shaft reserved holes of the specified height;

[0103] Then, the operator starts the feeding equipment 7, and the material will be transported along the conveying pipe 64 to the spray pipe 65, so that the operator can spread the material on the layer.

[0104] Immediately afterwards, as time goes by, after the material is laid on this layer, the feeding device 7 is turned off. Then, the operator starts the lifting device again to lift the present invention into the reserved hole of the elevator shaft on the next floor, and then starts the feeding device 7 again to carry out the material laying work on this layer.

[0105] Finally, repeat the above steps over time until the fabric work for all eight floors of the elevator shaft is completed.

[0106] After the entire fabric work is completed, the operator first disconnects the rotating frame 63 or the moving seat 1 from the pull rope. Finally, the utility model can be removed from the elevator shaft 8 by hoisting equipment.

[0107] During the above-mentioned use, when erecting scaffolding 5, according to the erection requirements, the operator inserts the first support rod 51 into the first connecting sleeve group 41 of equal height, and then inserts the second support rod 52 into the second connecting sleeve group 42 of equal height. After adjusting their respective lengths and distances, they are locked by the top tightening member of the sleeve, thus completing the locking work of the support rod. Finally, the vertical support rod or several adjacent support rods are connected by the connecting buckle, and the erection of scaffolding 5 can be completed quickly, and the erection of scaffolding 5 is safe and stable.

[0108] During the above-mentioned use, the movable seat 1 can be securely connected to the reserved hole in the elevator shaft, and at the same time provide a designated color light prompt. It can also provide a designated color light prompt during the ascent process, as well as a voice prompt, so that the operator can use it with peace of mind after seeing the indicator light.

[0109] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A base device for a fabric placing machine installed in an elevator shaft, comprising a movable seat (1) and a fabric placing assembly (6) that are slidably engaged with a pre-drilled hole at the same elevation within the elevator shaft (8), characterized in that: Also includes: Fixed base (2), fixed base (2) is detachably installed above movable base (1); The lower part of the support frame (3) is detachably installed on the top of the fixed seat (2). The support frame (3) is composed of at least one support frame unit (31), and each support frame unit (31) is connected to each other to form the support frame body. Connection component (4) is connected to each support frame unit (31) for installing scaffolding (5); The fabric assembly (6) is detachably installed on the top of the support frame (3), and the feed pipe (64) of the fabric assembly (6) passes through the movable seat (1) inside the support frame (3) and is connected to the external feeding device (7).

2. The foundation device for a concrete placing boom installed in an elevator shaft according to claim 1, characterized in that: The fixed base (2) includes a mounting base (21) and fixed legs (22) extending and connected to the four corners of the mounting base (21), wherein each fixed leg (22) is fixedly connected to the mounting base (21) by a reinforcing plate (23).

3. The foundation device for a concrete placing boom installed in an elevator shaft according to claim 2, characterized in that: The mounting base (21) has a square frame structure. Diagonal rods are connected to the vertical openings on all four sides of the mounting base (21). The connector at the bottom opening of the mounting base (21) is through-hole. The top of the mounting base (21) has multiple through holes adapted to the support frame (3).

4. The foundation device for a concrete placing boom installed in an elevator shaft according to claim 3, characterized in that: The fixed leg (22) is a telescopic structure; the fixed leg (22) includes: A fixed tube (221) is fixedly connected at one end to the mounting base (21), and multiple sets of fixed tube connection holes are opened through the fixed tube (221); Telescopic tube (222) is slidably snapped into the fixed tube (221). The telescopic tube (222) has multiple sets of telescopic tube connection holes that are adapted to the connection holes of the fixed tube. A fixing block (223) is fixedly connected to the non-connecting end of the telescopic tube (222), and a fixing hole is provided through the fixing block (223); The fixing block (223) is connected to the movable seat (1) by a fastener (224).

5. The foundation device for a concrete placing boom installed in an elevator shaft according to claim 1 or 4, characterized in that: The support frame unit (31) has a square frame structure. Inclined plates are connected to the vertical openings on all four sides of the support frame unit (31). Multiple sets of support frame connection holes are opened on the upper and lower end faces of the support frame unit (31). Each support frame unit (31) is connected to each other through locking parts to form the support frame body.

6. The foundation device for a concrete placing boom installed in an elevator shaft according to claim 1, characterized in that: The connection component (4) includes: The first connecting sleeve assembly (41) is connected to the vertical opposite sides of the support frame unit (31) respectively, and is used to connect the first support rod (51). The second connecting sleeve assembly (42) is connected to the other vertical opposite sides of the support frame unit (31) and is used to connect the second support rod (52). The first connecting sleeve group (41) and the adjacent second connecting sleeve group (42) are staggered.

7. The foundation device for a concrete placing boom installed in an elevator shaft according to claim 6, characterized in that: The first connecting sleeve group (41) includes sleeves that are respectively connected laterally to the four corners of the support frame unit (31). The second connecting sleeve group (42) has the same structure as the first connecting sleeve group (41), but is set at a different height.

8. The foundation device for a concrete placing boom installed in an elevator shaft according to claim 7, characterized in that: Each sleeve of the first connecting sleeve group (41) and the second connecting sleeve group (42) is also threaded with a tightening member. By rotating the tightening member, the tightness of the scaffold support rod installed in the sleeve can be locked.

9. The foundation device for a concrete placing boom installed in an elevator shaft according to claim 1, characterized in that: The movable seat (1) is provided with several positioning wheels (11) that are adapted to the reserved holes of the elevator shaft. The movable seat (1) is provided with a warning component to determine whether the positioning wheel (11) is located in the reserved hole or in the lifting state. The movable seat (1) has a through opening (12) adapted to the material conveying pipe (64) in the middle. Multiple movable seat connection holes (13) adapted to the fixed leg (22) are provided at the four diagonals of the movable seat (1).

10. The foundation device for a concrete placing boom installed in an elevator shaft according to claim 1, characterized in that: The fabric assembly (6) includes: Mounting plate (61), which is detachably mounted on top of support frame (3) by means of locking device; Rotary seat (62) is installed in the middle of the upper part of the mounting plate (61); Rotating frame (63) is connected to rotating seat (62); The middle part of the conveying pipe (64) is connected to the rotating frame (63), and one end of the conveying pipe (64) is connected to the external feeding device (7); The nozzle (65) is rotatably connected to the other end of the feed pipe (64).

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