A tool for concrete grouting in small section steel columns

Abstract

The utility model provides a tool for small section steel column inner concrete grouting relates to steel column grouting tool technical field, include: a plurality of telescopic parts, a plurality of telescopic parts are connected in succession sliding, to extend integral structure, every telescopic part includes the sleeve of upper and lower through -penetration, seal ring and a plurality of inner bracing structure, the inner bracing structure sets up in the sleeve, the seal ring is connected in one end of the sleeve, the sleeve of one telescopic part in arbitrary adjacent two telescopic parts and the seal ring inner diameter of another telescopic part fit sliding connection. The utility model has the advantages of: through the ingenious design of a plurality of telescopic parts and inner bracing structure, effectively reduce the impact difference of concrete, prevent concrete segregation, ensure grouting quality, the continuous sliding connection of telescopic part and the buffer effect of deflector make the tool can adapt to the narrow space of small section steel column, improve grouting efficiency, reduce the risk of blockage.

Description

Technical Field

[0001] This utility model relates to the technical field of steel column grouting tools, and in particular to a tool for grouting concrete inside small cross-section steel columns. Background Technology

[0002] In the construction process, steel columns are a common structural component, and their combination with concrete is widely used. Currently, on construction sites, concrete is usually delivered to the grouting holes opened in the steel columns using pump pipes or funnels.

[0003] However, this traditional grouting method has many problems. Small-section steel columns are often installed underground, and there is a large drop between the grouting hole and the grouting equipment. Therefore, traditional tools such as tremie pipes and funnels are needed to buffer the concrete and prevent excessive height from causing segregation of the concrete aggregate. However, when there is a large drop in the concrete, traditional auxiliary tools such as funnels can still cause segregation due to the large impact force at the funnel outlet. In view of these situations, there is an urgent need for an improved auxiliary tool to solve the above problems in the concrete grouting process of H-shaped steel columns. Utility Model Content

[0004] In view of this, the present invention provides a tool for grouting concrete in small cross-section steel columns to solve the technical problem that auxiliary tools in the prior art are prone to segregation when falling from a large height.

[0005] An embodiment of this utility model provides a tool for concrete grouting inside small-section steel columns, comprising:

[0006] Multiple telescopic components are continuously and slidably connected to extend the overall structure. Each telescopic component includes a sleeve that extends vertically, a sealing ring, and multiple inner support structures. The inner support structures are disposed inside the sleeve, and the sealing ring is connected to one end of the sleeve. In any two adjacent telescopic components, the sleeve of one telescopic component is slidably connected to the inner diameter of the sealing ring of the other telescopic component.

[0007] Each inner support structure includes a longitudinal guide rail, a transverse guide rail, and a guide plate. The two ends of the guide plate are slidably connected to the longitudinal guide rail and the transverse guide rail, respectively. The longitudinal guide rail is attached to the inner wall of the sleeve along the axial direction of the sleeve. The ends of the transverse guide rail and the longitudinal guide rail are vertically connected and face the radial direction of the sleeve. The guide plate is inclinedly connected to the transverse guide rail and the longitudinal guide rail, so that the guide plate buffers the concrete falling into the sleeve. The guide plates in multiple expansion joints continuously buffer the concrete, thereby reducing the impact drop of the concrete.

[0008] Furthermore, each of the telescopic components is provided with a support member at its upper end. The support member includes a support rod and a top block, and the top block is connected to one end of the guide plate.

[0009] Furthermore, both ends of the guide plate are connected to rotating shafts, and the inner sides of the longitudinal guide rail and the transverse guide rail are provided with sliding grooves. The two rotating shafts are slidably and rotatably connected to the sliding grooves on the longitudinal guide rail and the transverse guide rail, respectively.

[0010] Furthermore, the upper surface of the top block has an arc-shaped recess, and the shaft end is correspondingly fitted into the arc-shaped recess, so that the shaft end improves rotational stability relative to the top block under the abutment action.

[0011] Furthermore, each of the sleeves has a platform on its upper outer periphery, and one platform slides against the inner wall of the other sleeve.

[0012] Furthermore, each of the sleeves has a guide ring on its inner wall located at one end with the platform portion. The inner wall of the guide ring is tapered and inclined toward the axis of the sleeve to provide guidance for the flow of concrete.

[0013] Furthermore, one end of the longitudinal guide rail is connected to the bottom of the flow guide ring.

[0014] Furthermore, the uppermost sleeve is provided with multiple brackets, which extend outward toward the outer periphery of the sleeve to support the installation of the telescopic component.

[0015] Furthermore, the plurality of said inner support members are arranged in a circumferential direction on the inner wall of the sleeve.

[0016] Furthermore, the two ends of the top block are slidably connected to the grooves opened on the longitudinal guide rail.

[0017] The beneficial effects of the technical solution provided by the embodiments of this utility model are as follows: The tool for concrete grouting in small cross-section steel columns of this utility model, through the ingenious design of multiple telescopic components and internal support structure, effectively reduces the impact drop of concrete, prevents concrete segregation, and ensures grouting quality. The continuous sliding connection of the telescopic components and the buffering effect of the guide plate enable the tool to adapt to the narrow space of small cross-section steel columns, improve grouting efficiency, and reduce the risk of blockage. The connection method of the support components and the slide enhances the stability and operational flexibility of the tool, extends its service life, and has a compact overall structure. It is easy to operate and can flexibly adjust its length and position according to construction needs to adapt to grouting operations of steel columns of different heights. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural view of the tool for grouting concrete inside small-section steel columns according to this utility model;

[0019] Figure 2 This is a cross-sectional perspective view of the tool for grouting concrete inside small-section steel columns according to this utility model;

[0020] Figure 3 This utility model relates to a tool for concrete grouting inside small-section steel columns. Figure 2 Enlarged view of the structure at point A in the middle;

[0021] Figure 4 This is a three-dimensional view of the guide plate of the tool for concrete grouting in small cross-section steel columns according to this utility model.

[0022] In the diagram: 1. Sleeve; 2. Sealing ring; 3. Guide ring; 4. Bracket; 5. Longitudinal guide rail; 6. Transverse guide rail; 7. Slide groove; 8. Guide plate; 81. Shaft end; 9. Support rod; 10. Top block; 11. Edge section. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings. The following description presents a preferred embodiment of several possible embodiments of this utility model, intended to provide a basic understanding of the utility model, but not intended to identify the key or decisive elements of the utility model or to limit the scope of protection sought.

[0024] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0025] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures. Also, it should be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale.

[0027] In the description of this utility model, it should be noted that the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this utility model does not involve any improvement to the internal structure and method.

[0028] It should be further noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Please refer to Figure 1 The present invention provides a tool for grouting concrete in a small cross-section steel column, comprising multiple telescopic components that are continuously slidably connected to extend the overall structure. Each telescopic component includes a sleeve 1 that extends vertically, a sealing ring 2, and multiple internal support structures.

[0030] The dimensions of multiple telescopic components are proportionally reduced to allow the tool as a whole to have a certain telescopic length adjustment capability. At the same time, the sealing ring 2 is connected to one end of the sleeve 1, and the inner diameter of an adjacent sleeve 1 and a sealing ring 2 are fitted and slidably connected. This ensures good sealing at the connection of multiple telescopic components and reduces leakage.

[0031] It should be noted that the bottommost sleeve 1 is a bent sleeve, with an angle of 120°-150° between its outlet and inlet, which is used to reduce concrete grout segregation.

[0032] The internal support structure is set inside the sleeve 1 and consists of a longitudinal guide rail 5, a transverse guide rail 6 and a guide plate 8. The two ends of the guide plate 8 are slidably connected to the longitudinal guide rail 5 and the transverse guide rail 6 respectively. The longitudinal guide rail 5 is close to the inner wall of the sleeve 1, and the transverse guide rail 6 is perpendicularly connected to the end of the longitudinal guide rail 5.

[0033] The guide plate 8 is connected to the horizontal guide rail 6 and the vertical guide rail 5 in an inclined manner to form a buffer structure for the concrete. The guide plates 8 in the multiple expansion joints are arranged in sequence to continuously buffer the falling concrete, effectively reduce the impact drop and prevent concrete segregation.

[0034] Please refer to Figure 2-4 Each telescopic component is equipped with a support at its upper end, consisting of a support rod 9 and a top block 10. The top block 10 is connected to one end of the guide plate to ensure that the guide plate 8 remains stable during operation.

[0035] The rotating shaft ends 81 at both ends of the guide plate 8 are slidably and rotatably connected to the sliding grooves 7 on the inner side of the longitudinal guide rail 5 and the transverse guide rail 6, so that the position and angle of the guide plate 8 can be adjusted within a certain range, and it can be adjusted and extended when the two sleeves 1 are extended.

[0036] It should be noted that the upper surface of the top block 10 is designed as an arc-shaped recess, which fits into the rotating shaft end 81 to enhance the rotational stability of the guide plate under force and ensure that the guide plate 8 will not be displaced or shaken under the impact of concrete.

[0037] The upper outer periphery of the sleeve 1 is provided with a platform 11, which slides against the inner wall of the other sleeve 1 to ensure that the telescopic component remains stable during the telescopic process and to prevent excessive displacement or jamming.

[0038] Example 1: During the construction of a high-rise building, a small-section steel column with a height of 4 meters and an inner diameter of 300 millimeters needed to be grouted with concrete. The steel column was located in the core area of ​​the building, where the space was narrow and traditional large grouting equipment could not enter, making the construction difficult. In order to ensure the grouting quality and structural safety, the grouting tool of this utility model was used for the operation.

[0039] Based on the dimensions of the steel column, four expansion joints were selected, with their dimensions progressively arranged in a 1:0.8 ratio. Each expansion joint's sleeve 1 is 1 meter long, with inner diameters of 300 mm, 240 mm, 192 mm, and 153.6 mm respectively. The outer diameter is slightly smaller than the inner diameter of the next-level sleeve 1 to ensure a tight, sliding connection between adjacent sleeves 1 and the sealing ring 2. The sealing ring 2 is made of wear-resistant and corrosion-resistant rubber, with its inner diameter matching the outer diameter of the corresponding sleeve 1 to ensure excellent sealing performance.

[0040] In this embodiment, both the longitudinal guide rail 5 and the transverse guide rail 6 are made of high-strength aluminum alloy, which has good wear resistance and corrosion resistance. The guide plate 8 is made of high-quality stainless steel with a smooth surface, which can effectively reduce the adhesion and resistance of concrete.

[0041] The length and width of the guide plate 8 are designed according to the inner diameter of the sleeve 1 to ensure that it can slide freely inside the sleeve 1 and play a good buffering role. Each telescopic component is provided with 4 internal support structures, which are evenly arranged along the circumferential direction of the inner wall of the sleeve 1.

[0042] The support rod 9 of the support component is made of high-strength steel, and its two ends are firmly connected to the top block 10 and the upper end of the sleeve 1 respectively. The top block 10 is made of polyurethane material with moderate hardness, which has good elasticity and can provide stable support for the guide plate 8 while reducing the transmission of impact force.

[0043] The guide ring 3 is made of stainless steel, the same material as the guide plate 8. Its inner wall cone angle is 30 degrees, which can effectively guide the flow direction of concrete and make it evenly distributed on the guide plate 8. One end of the longitudinal guide rail 5 is firmly connected to the bottom of the guide ring 3 by welding, ensuring the stability and reliability of the guide ring 3 and the inner support structure.

[0044] In an optional embodiment, the uppermost sleeve 1 is equipped with six brackets 4. The brackets 4 are made of high-strength steel and are arranged radially outward toward the outer periphery of the sleeve 1. They are fixed to the top embedded part of the steel column by bolts, providing stable support for the entire grouting tool.

[0045] Before the grouting operation begins, the topmost expansion joint is first installed and fixed on the top of the steel column using bracket 4 to ensure its accurate and stable position. Then, other expansion joints are connected downwards in sequence. The sleeve 1 of the adjacent expansion joint is slidably connected to the inner diameter of the sealing ring 2, gradually extending the entire grouting tool so that it can reach the bottom of the steel column. During the connection process, ensure that the seal between each expansion joint is good and there is no risk of leakage.

[0046] During grouting, concrete is poured from the grouting port into the sleeve 1 of the uppermost expansion joint. The concrete first passes through the guide ring 3, and the conical inner wall of the guide ring 3 guides the concrete evenly onto the guide plate 8. Supported by the longitudinal guide rail 5 and the transverse guide rail 6, the guide plate 8 buffers the concrete and reduces the impact speed of the concrete. As the concrete continues to fall, the guide plates 8 in multiple expansion joints continuously buffer the concrete in sequence, so that the impact drop of the concrete is effectively controlled. When it reaches the bottom of the steel column, the concrete can be distributed smoothly and evenly, avoiding impact damage to the steel column structure.

[0047] Throughout the grouting process, the support provides stable support for the guide plate 8, ensuring that the guide plate 8 can stably play a buffering role. The rotating shaft end 81 is tightly fitted with the arc-shaped recess of the top block 10, so that the guide plate 8 can rotate stably when impacted by concrete, adjust the angle to better adapt to the flow state of the concrete, and at the same time ensure a tight connection with the longitudinal guide rail 5 and the transverse guide rail 6 to prevent concrete leakage.

[0048] Understandably, the edge portion 11 of the upper outer periphery of the sleeve 1 slides against the inner wall of the next-level sleeve 1, ensuring smooth extension and retraction between the telescopic components, while also playing a certain limiting role to prevent the telescopic components from excessively disengaging, thereby improving the overall stability and reliability of the tool.

[0049] With the grouting tool of this utility model, the grouting operation of the small cross-section steel column of the high-rise building was successfully completed. The grouting quality was tested and met the design requirements. The steel column structure was stable and there was no damage caused by impact, which effectively improved the construction efficiency and project quality.

[0050] Example 2: In the construction of a bridge, several small-section steel columns, each 6 meters high and with an inner diameter of 400 millimeters, serve as auxiliary supports. Concrete grouting is required to enhance their load-bearing capacity. Due to the complex construction environment, limited space, and high requirements for grouting quality, the grouting tool of this invention was adopted.

[0051] Based on the dimensions of the steel columns, six expansion joints were selected, with dimensions set in a progressively larger scale of 1:0.85. The sleeve 1 of each expansion joint is 1 meter long, with inner diameters of 400 mm, 340 mm, 289 mm, 245.6 mm, 208.76 mm, and 177.45 mm, respectively. The sealing ring 2 is made of a special rubber material that is resistant to high and low temperatures and aging, in order to adapt to various climatic conditions that may be encountered during bridge construction.

[0052] In the internal support structure, the longitudinal guide rail 5 and the transverse guide rail 6 are made of high-strength, lightweight carbon fiber composite material, which has high strength and low mass, making it easy to install and operate. The guide plate 8 is also made of stainless steel with a special surface treatment, which has good self-cleaning properties, reduces concrete adhesion, and is easy to clean and reuse. Each telescopic component has 6 internal support structures, which are evenly distributed in the circumferential direction of the inner wall of the sleeve 1.

[0053] The support rod 9 of the support component is made of high-strength alloy steel, which has high strength and toughness and can withstand large impact forces. The top block 10 is made of high-elasticity polyurethane material, and its arc-shaped concave shape fits tightly with the rotating shaft end 81 of the guide plate 8, ensuring that the guide plate 8 rotates stably during the buffering process without loosening or jamming.

[0054] The inner wall cone angle of the guide ring 3 is 45 degrees, which can more effectively guide the flow direction of the concrete, so that it can be evenly distributed on the guide plate 8 when entering the sleeve 1, further improving the buffering effect. The longitudinal guide rail 5 is connected to the bottom of the guide ring 3 by high-strength bolts to ensure the firmness and reliability of the connection.

[0055] The uppermost sleeve 1 is equipped with eight brackets 4. The brackets 4 are made of high-strength aluminum alloy, which has good corrosion resistance and fatigue resistance, and can adapt to the long-term outdoor use environment of the bridge. The brackets 4 are fixed to the pier by embedded parts, providing stable support for the grouting tools.

[0056] During the grouting operation, the uppermost expansion joint was first installed on the pier via bracket 4. Then, other expansion joints were connected in sequence, extending the entire grouting tool to the bottom of the steel column. During the grouting process, the concrete flowed smoothly into the interior of the steel column under the guidance and buffering effect of the guide ring 3 and the guide plate 8, and was evenly distributed. There was no significant impact force that caused damage to the steel column. On-site testing showed that the grouting density was high, the steel column structure performance was good, and the expected design requirements were met, ensuring the construction quality and safety performance of the bridge.

[0057] In this document, the directional terms such as front, back, top, and bottom are defined based on the position of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on different methods of use and placement; the use of these directional terms should not limit the scope of protection claimed in this application.

[0058] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0059] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tool for grouting concrete inside small-section steel columns, characterized in that, include: Multiple telescopic components are continuously and slidably connected. Each telescopic component includes a sleeve (1) that runs vertically through the top and bottom, a sealing ring (2), and multiple inner support structures. The inner support structures are disposed inside the sleeve (1). The sealing ring (2) is connected to one end of the sleeve (1). In any two adjacent telescopic components, the sleeve (1) of one telescopic component is in close contact with the inner diameter of the sealing ring (2) of the other telescopic component and is slidably connected. Each inner support structure includes a longitudinal guide rail (5), a transverse guide rail (6), and a guide plate (8). The two ends of the guide plate (8) are slidably connected to the longitudinal guide rail (5) and the transverse guide rail (6), respectively. The longitudinal guide rail (5) is axially attached to the inner wall of the sleeve (1). The ends of the transverse guide rail (6) and the longitudinal guide rail (5) are vertically connected and face the radial direction of the sleeve (1). The guide plate (8), the transverse guide rail (6), and the longitudinal guide rail (5) are inclinedly connected, so that the guide plate (8) buffers the concrete falling into the sleeve (1). The guide plates (8) in the multiple expansion joints continuously buffer the concrete, thereby reducing the impact drop of the concrete.

2. The tool for concrete grouting in small-section steel columns as described in claim 1, characterized in that: Each of the telescopic components is provided with a support member at its upper end. The support member includes a support rod (9) and a top block (10). The top block (10) is connected to one end of the guide plate (8).

3. The tool for grouting concrete inside small-section steel columns as described in claim 2, characterized in that: Both ends of the guide plate (8) are connected to rotating shaft ends (81). The inner sides of the longitudinal guide rail (5) and the transverse guide rail (6) are provided with sliding grooves (7). The two rotating shaft ends (81) are slidably and rotatably connected to the sliding grooves (7) on the longitudinal guide rail (5) and the transverse guide rail (6), respectively.

4. The tool for concrete grouting in small-section steel columns as described in claim 3, characterized in that: The upper surface of the top block (10) has an arc-shaped recess, and the rotating shaft end (81) is fitted into the arc-shaped recess to improve the rotational stability of the rotating shaft end (81) relative to the top block (10) under the abutment action.

5. The tool for grouting concrete inside small-section steel columns as described in claim 2, characterized in that: Each of the sleeves (1) has a platform (11) on its upper outer periphery, and one platform (11) slides against the inner wall of the other sleeve (1).

6. The tool for grouting concrete inside small-section steel columns as described in claim 5, characterized in that: Each of the sleeves (1) has a guide ring (3) on its inner wall located at one end with the platform portion (11). The inner wall of the guide ring (3) is tapered and inclined toward the axis of the sleeve (1) to provide concrete flow guidance.

7. The tool for grouting concrete inside small-section steel columns as described in claim 6, characterized in that: One end of the longitudinal guide rail (5) is connected to the bottom of the guide ring (3).

8. The tool for grouting concrete inside small-section steel columns as described in claim 1, characterized in that: The uppermost sleeve (1) is provided with multiple brackets (4), which extend outward toward the outer periphery of the sleeve (1) to support the installation of the telescopic component.

9. The tool for grouting concrete inside small-section steel columns as described in claim 1, characterized in that: Multiple inner support structures are arranged circumferentially on the inner wall of the sleeve (1).

10. The tool for grouting concrete inside small-section steel columns as described in claim 2, characterized in that: The two ends of the top block (10) are slidably connected to the grooves (7) opened on the longitudinal guide rail (5).

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