A lifting grouting device for pouring concrete structural columns from the bottom

Abstract

This utility model discloses a lifting grouting device for bottom-pouring concrete structural columns, relating to the field of concrete structural column pouring construction. The lifting grouting device is configured longitudinally in the main body of the structural column and forms a closed grouting space with the pouring area of ​​the main body of the structural column. A PVC pipe is pre-embedded in the main body of the structural column, and a steel template is set on the outside of the main body of the structural column. The steel template is provided with grouting interfaces and threaded openings corresponding to the PVC pipes. The lifting grouting device includes tie bolts and a lifting grouting assembly. The tie bolts are horizontally set between the main body of the structural column and the lifting grouting assembly. The lifting grouting assembly includes connecting steel plate A, connecting steel plate B, anti-backflow steel plate, rotary anti-backflow switch, stiffening plate, grouting pipe, end connector and high-pressure hose. Through the setting of tie bolts and lifting grouting assembly, this lifting grouting device realizes precise, efficient and high-quality grouting construction at the bottom of the concrete structural column.

Description

Technical Field

[0001] This utility model belongs to the field of concrete structural column casting construction, specifically a lifting grouting device for pouring concrete structural columns from the bottom. Background Technology

[0002] In the field of building construction, concrete structural columns are core components that enhance the integrity and stability of buildings. Their casting quality directly affects the safety and durability of the building structure, playing a decisive role in the long-term stable operation of the building. Therefore, seeking efficient, high-quality, and convenient methods for casting concrete structural columns has always been an important research direction in the field of building construction.

[0003] Currently, the main methods for pouring concrete structural columns include top funnel grouting and bottom grouting. Top funnel grouting involves fixing a funnel to the top of the structural column and pouring concrete into it manually or mechanically, allowing gravity to carry the concrete into the column formwork. This method requires erecting scaffolding at height to hold the funnel before construction, a process highly dependent on manual operation at height. However, construction sites often have limited working space, making it extremely inconvenient for workers, and the stability of temporary support structures is difficult to guarantee. During construction, they are susceptible to wind, construction vibrations, and other factors, which can cause the scaffolding to collapse. Furthermore, workers face a very high risk of falling while working at height, seriously threatening their personal safety. According to statistics, accidents caused by scaffolding erection and working at height account for a significant proportion of construction accidents, causing heavy losses to businesses and families. Furthermore, pouring concrete at the top is time-consuming and labor-intensive. When pouring a single 3m high structural column, it usually requires 2-3 workers working closely together: one to hold the funnel, one to carry the concrete, and one to vibrate it. Even so, the entire pouring process still takes more than 40 minutes, resulting in extremely low construction efficiency. Moreover, during the process of concrete falling through the funnel, aggregate segregation is prone to occur, with coarse aggregate accumulating at the bottom and mortar floating on top, leading to uneven density in the structural column. Due to insufficient pressure at the bottom, air cannot be completely expelled, which can also cause quality defects such as "hollow areas" or "honeycomb-like pitted surfaces."

[0004] Compared to the top funnel grouting method, bottom grouting avoids many significant drawbacks. Firstly, it eliminates the need for high-altitude scaffolding, fundamentally removing safety hazards caused by high-altitude operations and unstable scaffolding, greatly improving construction safety and protecting worker safety. Secondly, this method avoids aggregate segregation problems that occur when concrete falls from the top funnel. Because the concrete is injected from the bottom, the pressure allows it to fill the formwork space more evenly, resulting in a more uniform density of the structural column and effectively improving its mechanical properties and durability. Furthermore, bottom grouting provides sufficient pressure to the concrete, promoting air expulsion and reducing quality defects such as hollow areas or honeycomb-like pitting, improving pouring quality and reducing subsequent repair procedures and costs.

[0005] Regarding bottom grouting, our company filed a utility model patent on August 2, 2016, with publication number CN106088656A. The patent title is "A Lower Grouting Device and Method for Increasing Floor Slab Thickness." In this patent application, the lower grouting device includes a connecting sleeve, an upper clamping plate fixedly fitted on the upper part of the connecting sleeve, a pad located below the upper clamping plate and capable of moving up and down on the connecting sleeve, and a limiting member for limiting the pad. The pad is fitted on the connecting sleeve. The upper part of the connecting sleeve passes through a forming template supported below the floor slab to be reinforced from bottom to top. The upper clamping plate and the pad form a clamping structure. The forming template has a through hole for the connecting sleeve to pass through, and the upper clamping plate is a sealing plate for sealing the through hole. The lower end of the connecting sleeve is connected to the grouting pipe. An anti-backflow component is provided on the connecting sleeve. The lower grouting method includes the following steps: 1. Dividing the reinforcement area; 2. Lower grouting reinforcement. This utility model is reasonably designed, easy to operate, and effective, enabling simple and rapid grouting under the floor slab to be reinforced without the need for drilling holes in the slab. However, this patent primarily focuses on grouting at the bottom of floor slabs for reinforcement. When directly applied to grouting the bottom of concrete structural columns, it still has certain limitations, mainly in the following aspects:

[0006] The unique characteristics of structural columns: Concrete structural columns typically have specific cross-sectional shapes (such as rectangles, circles, etc.) and dimensions, and are distributed in various locations within a building, potentially at corners, in the middle of walls, etc. However, the design of grouting devices for floor slab reinforcement primarily focuses on the planar structure and stress characteristics of the floor slab. It does not fully consider the three-dimensional structure of structural columns and the space constraints imposed by their different locations, making it difficult to directly adapt to the grouting requirements at the bottom of various types of concrete structural columns.

[0007] The connection and fixing with the structural column formwork is inconvenient: In the construction of structural columns, steel or wooden formwork is required to form the pouring space. The clamping structure and other designs of the floor slab reinforcement grouting device are mainly designed for the formed formwork under the floor slab. The shape, material and connection method of the device are quite different from those of the structural column formwork. As a result, when the device is applied to the bottom of the structural column for grouting, it is difficult to achieve a stable and convenient connection and fixing with the structural column formwork, which affects the construction efficiency and the stability of the device.

[0008] The anti-backflow mechanism is not very specific for the construction of structural columns: Although the device is equipped with anti-backflow components, during the grouting process at the bottom of the structural column, the concrete flow path and stress conditions are different from those of the floor slab reinforcement grouting. The existing anti-backflow components may not be able to effectively prevent the backflow of concrete under specific construction conditions. For example, when encountering a short stop or pressure fluctuation during the grouting process, concrete backflow may still occur, leading to quality problems such as the concrete at the bottom of the structural column not being dense. Utility Model Content

[0009] The purpose of this invention is to provide a jacking grouting device for pouring concrete structural columns from the bottom, so as to solve the problem in the prior art that it is difficult to ensure uniform and dense filling of concrete due to inaccurate pressure adjustment and weak anti-backflow mechanism, which affects the quality of structural column pouring.

[0010] To achieve the above objectives, this utility model provides the following technical solution: a lifting grouting device for bottom-pouring concrete structural columns. The lifting grouting device is positioned longitudinally within the main body of the structural column and forms a closed grouting space with the pouring area of ​​the main body. A PVC pipe is pre-embedded within the main body of the structural column, and a steel template is installed on the outside of the main body. The steel template has grouting interfaces and threaded openings corresponding to the PVC pipes. The lifting grouting device includes tie bolts and a lifting grouting assembly. The tie bolts are horizontally positioned between the main body of the structural column and the lifting grouting assembly, and are evenly distributed along the height of the structural column. The tie bolts penetrate the steel template and the pre-embedded PVC pipe within the main body of the structural column, and secure the steel template and the lifting grouting assembly. The tie bolt spacing is 500mm-800mm, used to fix the steel template and prevent it from bulging due to concrete pressure during the grouting and lifting process. The lifting grouting assembly includes a connecting... The system includes a connecting steel plate A, a connecting steel plate B, an anti-backflow steel sheet, a rotary anti-backflow switch, a stiffening plate, a grouting pipe, end connectors, and a high-pressure hose. Specifically: Connecting steel plate A is positioned at the bottom of the steel formwork, with a thickness of 20mm. Its opening A is aligned with and connected to the grouting interface, and is secured with tie bolts. Connecting steel plate B is positioned outside connecting steel plate A, with a thickness of 10mm. Its opening B is aligned with and connected to opening A, and is also secured with tie bolts. The anti-backflow steel sheet is circular and distributed within opening A of connecting steel plate A, with its edge sealingly connected to opening A. The rotary anti-backflow switch is installed outside connecting steel plate A and connected to the anti-backflow steel sheet, controlling the opening and closing of opening A through rotation. The grouting pipe connects connecting steel plate A and connecting steel plate B, providing a grout flow path and structural support.

[0011] Preferably, the stiffening plate is connected between the connecting steel plate A and the connecting steel plate B, the stiffening plate is 8mm thick, and the stiffening plate is rectangular or trapezoidal in shape.

[0012] Preferably, the end connector is located on the input side of the grouting pipe and connects the grouting pipe and the high-pressure hose. The high-pressure hose is connected to the grouting pump and the high-pressure concrete grout is sequentially passed through the end connector, the grouting pipe, and the valve port (steel plate port A) of the connecting steel plate A to the internal cavity of the structural column body for grouting and filling.

[0013] Preferably, the end connector includes a sealing joint A, a sealing joint B, a central pipe, a connecting seat, a heating element, an attached vibration element, and a locking clamp. The connecting seat has a trapezoidal cross-section and an arc groove in the middle. The inner diameter of the arc groove is adapted to the outer diameter of the central pipe. The connecting seat is provided with multiple locking clamps for securing the central pipe.

[0014] Preferably, sealing joints A and B are respectively provided at the front and rear ends of the central pipe, and sealing joints A and B are respectively connected to the grouting pipe and the high-pressure hose.

[0015] Preferably, a heating element and an attached vibration element are installed within the arc groove of the connector. The end connector integrates heating and vibration functions, forming a connector with both heating and vibration capabilities. The heating element can adjust the temperature within the arc groove according to the construction environment and concrete characteristics, ensuring that the concrete is poured and formed at a suitable temperature, avoiding problems such as slow concrete setting and hindered strength development due to excessively low temperatures. The attached vibration element generates high-frequency vibration, causing air bubbles in the concrete to be quickly expelled, resulting in more uniform aggregate distribution, effectively reducing porosity and defects within the concrete, significantly improving the density and uniformity of the concrete, and thus enhancing the compressive strength and impermeability of the concrete structural column; it also avoids blockage problems caused by aggregate segregation and slurry loss.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention achieves precise, efficient and high-quality grouting construction at the bottom of concrete structural columns by setting tie bolts and lifting grouting components. Tie bolts can achieve a stable connection of the device. The lifting grouting components are equipped with anti-backflow structure, heating and vibration elements, etc., which can effectively prevent concrete backflow, ensure the quality of grouting material, and meet the special needs of structural column construction.

[0017] 1. The tie bolts provided in this utility model can effectively fix the steel template and prevent bulging.

[0018] 2. For the special working conditions of grouting at the bottom of structural columns, this utility model designs an anti-backflow structure. This structure, through the cooperation of an anti-backflow steel plate and a rotary anti-backflow switch, allows for flexible control of the opening and closing of the steel plate opening during grouting. In the event of a short-term shutdown or pressure fluctuation, the anti-backflow steel plate can be quickly closed, effectively preventing concrete backflow and avoiding quality problems such as insufficient compaction of the concrete at the bottom of the structural column, thus ensuring the quality of the concrete pouring at the bottom of the structural column.

[0019] 3. Vent holes are provided at the top of the steel formwork to facilitate timely air discharge and prevent the formation of voids inside the structural column; the end connectors are equipped with heating elements and attached vibration elements. The heating elements can maintain the appropriate temperature of the grout, and the attached vibration elements can make the grout more compact.

[0020] 4. The device of this utility model is detachable and reusable, replacing the traditional funnel opening and reducing the cost of repeated purchase of equipment. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of the lifting grouting assembly in Embodiment 1 of this utility model;

[0024] Figure 3 This is a schematic diagram of the planar structure of the lifting grouting assembly in Embodiment 1 of this utility model;

[0025] Figure 4 This is a schematic diagram of the end connector in Embodiment 2 of this utility model.

[0026] In the picture:

[0027] 1. Main body of structural column; 2. Tie bolt; 3. Vent hole; 4. Connecting steel plate A; 5. Rotary anti-backflow switch; 6. Anti-backflow steel sheet; 7. Connecting steel plate B; 8. Stiffening plate; 9. Grouting pipe; 10. End connector; 101. Sealing joint A; 102. Sealing joint B; 103. Center pipe; 104. Connecting seat; 105. Locking clamp; 11. High-pressure hose. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] As attached Figure 1 To be continued Figure 3 As shown:

[0030] Example 1: This utility model provides a jacking grouting device for pouring concrete structural columns from the bottom. The jacking grouting device is arranged longitudinally in the main body 1 of the structural column and forms a closed grouting space with the pouring area of ​​the main body 1. A PVC pipe is pre-embedded in the main body 1 of the structural column. The length of the PVC pipe is the same as the width of the main body 1 of the structural column. The inner diameter of the PVC pipe is 2mm-4mm larger than the diameter of the tie bolt 2, which facilitates the removal of the tie bolt 2 after curing. One end of the PVC pipe is connected to the inside of the steel formwork, and the other end protrudes outside the steel formwork, forming an inner diameter of 15mm. Vent hole 3; a steel formwork is installed on the outside of the main body 1 of the structural column, and the steel formwork is equipped with grouting interfaces and threaded ports corresponding to PVC pipes. The jacking grouting device includes tie bolts 2 and jacking grouting components; the tie bolts 2 are horizontally installed between the main body 1 of the structural column and the jacking grouting components, and are evenly distributed along the height direction of the structural column. The tie bolts 2 are used to penetrate the steel formwork and the PVC pipes pre-embedded in the main body 1 of the structural column, and to fasten the steel formwork and the jacking grouting components. The spacing of the tie bolts 2 is 500mm-800mm, used to fix the steel formwork and prevent... To prevent the steel formwork from bulging due to concrete pressure during the grouting and jacking process; the jacking and grouting assembly includes connecting steel plate A4, connecting steel plate B7, anti-backflow steel plate 6, rotary anti-backflow switch 5, stiffening plate 8, grouting pipe 9, end connector 10, and high-pressure hose 11, wherein: connecting steel plate A4 is located at the bottom of the steel formwork, connecting steel plate A4 is 20mm thick, and the steel plate opening A on it is aligned with and connected to the grouting interface, and connecting steel plate A4 is locked by tie bolt 2; connecting steel plate B7 is located on the outside of connecting steel plate A4, connecting steel plate B7 The steel plate B, which is 10mm thick, is aligned and connected to the steel plate A. The connecting steel plate B7 is secured by tie bolts 2. The anti-backflow steel sheet 6 is arranged in a circle and distributed inside the steel plate A of the connecting steel plate A4. The edge of the anti-backflow steel sheet 6 is sealed to the steel plate A. The rotary anti-backflow switch 5 is installed on the outside of the connecting steel plate A4 and connected to the anti-backflow steel sheet 6. The rotary anti-backflow switch 5 controls the opening and closing of the steel plate A by rotation. The grouting pipe 9 is used to connect the connecting steel plate A4 and the connecting steel plate B7 and provides a grout flow path and structural support.

[0031] 1. In one embodiment of this utility model, a stiffening plate 8 is connected between connecting steel plate A4 and connecting steel plate B7. The stiffening plate 8 has a thickness of 8mm and is rectangular or trapezoidal in shape. The stiffening plate 8 is used to enhance the local stiffness and stability at the connection node, and to prevent local buckling or failure of the connection part due to excessive stress.

[0032] 2. In one embodiment of the present invention, the end connector 10 is provided on the input side of the grouting pipe 9 and connects the grouting pipe 9 and the high-pressure hose 11. The high-pressure hose 11 is connected to the grouting pump and the high-pressure concrete slurry is sequentially passed through the end connector 10, the grouting pipe 9, and the valve port of the connecting steel plate A4 to the internal cavity of the structural column body 1 for grouting and filling.

[0033] Working principle: In Example 1, a closed and controllable grouting system is formed by the jacking grouting assembly and the tie bolts 2. It can form pressure through bottom grouting to fill the concrete from bottom to top in the main body of the structural column 1. The opening and closing of the grouting process is controlled by the anti-backflow steel plate 6 and the rotary anti-backflow switch 5 to prevent grout backflow. The stability of the connection node is enhanced by the stiffening plate 8. The closed grouting space is formed by the steel formwork and the tie bolts 2 to prevent grout leakage. Finally, the concrete in the main body of the structural column 1 is densely poured.

[0034] As attached Figure 4 As shown:

[0035] Example 2: This example is basically the same as the previous example, except that the end connector 10 includes a sealing joint A101, a sealing joint B102, a central tube 103, a connecting seat 104, a heating element (not shown in the figure), an attached vibration element (not shown in the figure), and a locking clamp 105. The connecting seat 104 has a trapezoidal cross-section and an arc groove in the middle. The inner diameter of the arc groove is adapted to the outer diameter of the central tube 103. The connecting seat 104 is provided with multiple locking clamps 105 for locking the central tube 103.

[0036] 1. In one embodiment of the present invention, sealing joints A101 and B102 are respectively provided at the front and rear ends of the central pipe 103, and sealing joints A101 and B102 are respectively connected to the grouting pipe 9 and the high-pressure hose 11.

[0037] 2. In one embodiment of the present invention, a heating element and an attached vibration element are provided in the arc groove of the connecting seat 104.

[0038] Working principle:

[0039] In Example 2, the end connector 10 integrates heating and vibration functions, forming a connector with both heating and vibration capabilities. The heating element can adjust the temperature within the arc groove according to the construction environment and concrete characteristics, ensuring that the concrete is poured and formed at a suitable temperature, avoiding problems such as slow concrete setting and hindered strength development due to excessively low temperatures. The attached vibration element can generate high-frequency vibration, causing air bubbles in the concrete to be quickly expelled, resulting in a more uniform aggregate distribution, effectively reducing porosity and defects within the concrete, significantly improving the density and uniformity of the concrete, and thus enhancing the compressive strength and impermeability of the concrete structural column; it also avoids blockage problems caused by aggregate segregation and slurry loss.

[0040] This utility model also provides a method for jacking up and grouting concrete structural columns poured from the bottom, which is based on the jacking up and grouting device in Embodiments 1 and 2 above. The specific jacking up and grouting method includes the following steps:

[0041] Step 1: Steel formwork erection and preparation. Steel formwork is used for erection, and rubber strips are used to seal the joints of the steel formwork to ensure overall airtightness and prevent grout leakage during the grouting process, thus ensuring the quality of subsequent grouting. Tie bolts 2 are installed every 500mm from bottom to top along the steel formwork for fixation, thereby resisting the lateral pressure on the steel formwork during the grouting and lifting process and preventing the steel formwork from bulging and deforming. After the steel formwork is installed, three 15mm diameter vent holes 3 (PVC pipes) are set at the top of the steel formwork to release the air generated during the grouting process and prevent the formation of voids inside the structural column.

[0042] Step 2: Installation and connection of the jacking grouting assembly. Open the steel plate opening A by rotating the anti-backflow switch 5, and align the jacking grouting assembly with the grouting interface reserved on the steel formwork. Then, use tie bolts 2 to fix the jacking grouting assembly to the steel formwork to prevent the device from shifting during grouting. After fixing, connect the sealing joint A101 of the end connector 10 to the grouting pipe 9, and the sealing joint B102 to the high-pressure hose 11 of the grouting equipment, and ensure the sealing of the connection to avoid grout leakage.

[0043] Step 3: Pressure grouting and stopping. Turn on the grouting equipment and begin pressure grouting into the main body 1 of the structural column. During the grouting process, the heating element works continuously to maintain a suitable temperature for the grout, and the attached vibration element vibrates continuously to make the grout more compact. When grouting is completed and needs to be stopped, reduce the pressure of the grouting equipment, and then turn the rotary anti-backflow switch 5 to close the anti-backflow steel plate 6, thereby stopping the grouting and preventing the grout from flowing back and causing waste and quality problems at the bottom of the structural column.

[0044] Step 4: Dismantling and subsequent handling of the equipment. Disconnect the sealing joint B102 in the end connector 10 of the jacking grouting component from the high-pressure hose 11 of the grouting equipment. The main body 1 of the structural column is cured for seven days, during which time the strength of the structural column gradually increases. After seven days, remove the tie bolts 2 and the jacking grouting component in sequence. The jacking grouting component can be kept for later use to reduce costs. Finally, remove the steel formwork of the main body 1 of the structural column, thus completing the entire pouring work.

[0045] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A jacking grouting device for bottom-pouring concrete structural columns, wherein the jacking grouting device is arranged longitudinally along the main body (1) of the structural column and forms a closed grouting space with the pouring area of ​​the main body (1), characterized in that: A PVC pipe is pre-embedded inside the main body of the structural column (1). A steel template is set on the outside of the main body of the structural column (1). The steel template is equipped with a grouting interface and a threaded port corresponding to the PVC pipe. The jacking grouting device includes tie bolts (2) and jacking grouting components. The tie bolts (2) are horizontally set between the main body of the structural column (1) and the jacking grouting components and are evenly distributed along the height direction of the structural column. The tie bolts (2) are used to penetrate the steel template and the PVC pipe pre-embedded inside the main body of the structural column (1) and to fasten the steel template and the jacking grouting components. The jacking grouting components include connecting steel plate A (4), connecting steel plate B (7), anti-backflow steel plate (6), rotating anti-backflow switch (5), stiffening plate (8), grouting pipe (9), end connector (10) and high-pressure hose (11), wherein: The connecting steel plate A (4) is placed at the bottom of the steel formwork, and the steel plate opening A on it is aligned with and connected to the grouting interface. The connecting steel plate A (4) is locked by tie bolts (2). Connecting steel plate B (7) is positioned on the outside of connecting steel plate A (4), and the steel plate opening B on it is aligned with and connected to the steel plate opening A. Connecting steel plate B (7) is secured by tie bolts (2). The anti-backflow steel sheet (6) is arranged in a circle and distributed in the steel plate opening A of the connecting steel plate A (4). The edge of the anti-backflow steel sheet (6) is sealed to the steel plate opening A. The rotary anti-backflow switch (5) is installed on the outside of the connecting steel plate A (4) and connected to the anti-backflow steel sheet (6). The rotary anti-backflow switch (5) controls the opening and closing of the steel plate opening A by rotation. The grouting pipe (9) is used to connect the connecting steel plate A (4) and the connecting steel plate B (7) and to provide the grout flow path and structural support.

2. The jacking grouting device for bottom-pouring concrete structural columns according to claim 1, characterized in that: The stiffening plate (8) is connected between the connecting steel plate A (4) and the connecting steel plate B (7), and the stiffening plate (8) is rectangular or trapezoidal.

3. The jacking grouting device for bottom-pouring concrete structural columns according to claim 1, characterized in that: The end connector (10) is located on the input side of the grouting pipe (9) and connects the grouting pipe (9) and the high-pressure hose (11). The high-pressure hose (11) is connected to the grouting pump.

4. A jacking grouting device for bottom-pouring concrete structural columns according to claim 3, characterized in that: The end connector (10) includes a sealing joint A (101), a sealing joint B (102), a central tube (103), a connecting seat (104), a heating element, an attached vibration element, and a locking clamp (105). The connecting seat (104) has a trapezoidal cross-section and an arc groove in the middle. The inner diameter of the arc groove is adapted to the outer diameter of the central tube (103). The connecting seat (104) is provided with multiple locking clamps (105) for locking the central tube (103).

5. A jacking grouting device for bottom-pouring concrete structural columns according to claim 4, characterized in that: The front and rear ends of the central pipe (103) are respectively provided with sealing joint A (101) and sealing joint B (102), and sealing joint A (101) and sealing joint B (102) are respectively connected to the grouting pipe (9) and the high pressure hose (11).

6. A jacking grouting device for bottom-pouring concrete structural columns according to claim 4, characterized in that: Heating elements and attached vibration elements are provided in the arc groove of the connecting seat (104).

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