Concrete filling device for interlayer of double-layer steel pipe
By combining a rotating pallet and concrete conveying assembly with a vacuum pump, the design utilizes centrifugal force and gravity to solve the difficulty of filling double-layer steel pipe sandwiched concrete, achieving efficient and automated concrete production.
Patent Information
- Application Number
- CN202423249092.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Traditional double-layer steel pipe sandwich concrete filling process is cumbersome, has a low yield, is prone to air bubbles, and has low processing efficiency, especially for spiral cavity structures which are difficult to fill.
The system employs a rotating pallet and concrete conveying assembly, utilizing centrifugal force and gravity to assist concrete flow. Combined with a vacuum pump for exhaust, this ensures smooth flow and compaction of concrete within the spiral cavity. Vibration eliminates air bubbles, guaranteeing filling quality.
It improves concrete filling efficiency, reduces the occurrence of air bubbles and voids, reduces the applicability of the production line, and realizes automated and continuous production.
Smart Images
Figure CN223630603U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of steel pipes, in particular to a concrete filling device for a double-layer steel pipe interlayer. BACKGROUND
[0002] The steel pipe structure with a pipe wall interlayer cavity filled with concrete is a special pipe structure, that is, concrete is poured into a steel pipe and tamped to increase the strength and stiffness of the steel pipe. It has unique mechanical properties and application advantages. The compressive strength of concrete is high, but the bending resistance is very weak. Steel, especially shaped steel, has strong bending resistance and good elastic-plasticity, but it is easy to lose stability and axial compressive capacity when under pressure. Steel pipe concrete can combine the advantages of both in structure, so that the compressive strength of concrete can be doubled, and the stiffness of the steel pipe is improved due to the presence of concrete, which limits the buckling of the steel pipe structure in one direction, thereby greatly improving the mechanical properties. Steel and concrete composite structure has been applied in practical engineering projects and has shown good performance.
[0003] In the traditional technology, the process of filling concrete into the steel pipe is complicated, especially the filling of concrete between the inner cavities of the double-layer steel pipe. Because the pipe is long, the cavity between the inner and outer layers is narrow and spiral, which increases the difficulty of the filling process and reduces the yield of finished products. In particular, the double-layer steel pipe with a spiral cavity developed by the applicant has two layers of steel pipes, a gap between the two layers of pipe walls, and vertical ring plates arranged in a spiral shape inside the interlayer around the pipe body. A spiral cavity is formed in the pipe wall interlayer, which needs to be filled with concrete. Although the above-mentioned self-developed double-layer steel pipe has higher strength, it also faces the problems of filling difficulty, low processing efficiency, and easy existence of bubbles after filling. CONTENT OF THE INVENTION
[0004] Therefore, it is necessary to provide a concrete filling device for a double-layer steel pipe interlayer, which is convenient to process, has high processing yield, high processing efficiency, and is not prone to bubbles.
[0005] A concrete filling device for a double-layer steel pipe interlayer, the double-layer steel pipe comprising an inner pipe and an outer pipe sleeved, a containing cavity being formed between the inner pipe and the outer pipe, one end of the double-layer steel pipe being provided with a grouting port and an exhaust and drainage port for connecting the containing cavity with the outside, the concrete filling device comprising:
[0006] a rotating tray, the double-layer steel pipe being vertically arranged on the rotating tray in a first direction, the rotating tray being configured to be rotatable about the first direction; and
[0007] a concrete conveying assembly for conveying concrete into the containing cavity of the steel pipe through the grouting port.
[0008] In one of the embodiments, the double-layer steel pipe comprises a pipe body and a spiral ring plate, the pipe body comprises the inner pipe and the outer pipe, the spiral ring plate is arranged between the inner pipe and the outer pipe, and the spiral ring plate divides the accommodating cavity into spiral cavities, and the concrete conveying assembly is used for conveying concrete to the spiral cavities.
[0009] In one of the embodiments, the grouting port is located on the side of the double-layer steel pipe away from the rotating tray.
[0010] In one of the embodiments, the double-layer steel pipe further comprises annular sealing plates arranged at both ends of the inner pipe and the outer pipe, and the annular sealing plates on the side away from the rotating tray are provided with grouting ports and exhaust and drainage ports which are in communication with the outside.
[0011] In one of the embodiments, the concrete filling device further comprises a fixing assembly abutting against the outer pipe wall of the double-layer steel pipe, and the double-layer steel pipe can rotate relative to the fixing assembly.
[0012] In one of the embodiments, the fixing assembly comprises a support and a roller, the roller is arranged on the support, and the support defines a placement position of the double-layer steel pipe so as to abut the roller against the outer pipe wall of the double-layer steel pipe.
[0013] In one of the embodiments, the exhaust and drainage port is located on the side of the double-layer steel pipe away from the rotating tray, and the concrete filling device further comprises a vacuum pump and a vacuum pipe, the vacuum pipe connecting the vacuum pump and the exhaust and drainage port.
[0014] In one of the embodiments, the vacuum pump rotates synchronously with the rotating tray, and / or the vacuum pipe rotates synchronously with the rotating tray.
[0015] In one of the embodiments, the concrete conveying assembly comprises a conveying pump and a pipeline assembly connecting the conveying pump and the grouting port, and the concrete conveying assembly rotates synchronously with the rotating tray, or the pipeline assembly rotates synchronously with the rotating tray.
[0016] In one of the embodiments, the pipeline assembly comprises a first pipeline and a second pipeline, the first pipeline is connected between the second pipeline and the grouting port, the second pipeline is connected between the first pipeline and the concrete conveying assembly, and the first pipeline rotates around the axis of the second pipeline when the double-layer steel pipe rotates.
[0017] In one of the embodiments, the rotating tray is provided with a clamping member for clamping the double-layer steel pipe.
[0018] The present application has the following technical effects:
[0019] 1) Improve the filling efficiency of concrete: Under the dual action of centrifugal force and gravity, the flow and filling of concrete in the spiral cavity are more smooth, which helps to improve the filling efficiency. Centrifugal force can help overcome the resistance in the flow process of concrete, so that the concrete can gradually fill the inner cavity of the steel pipe from the end of the steel pipe body on the other side of the grouting port to the end of the grouting port.
[0020] 2) Reduce air bubbles and hollowing: Due to the action of centrifugal force, during the filling process of concrete, the concrete adheres to the outside of the cavity and forms a gap with the inner wall of the cavity that allows air to flow. Under the action of gravity and gas buoyancy, the air in the cavity will be discharged in the opposite direction, forming a smooth exhaust passage. This process helps to reduce air bubbles in the concrete, avoids the phenomenon of hollowing and delamination caused by air bubbles, and thus improves the density and overall performance of the concrete.
[0021] 3) Low-pressure filling: During the filling process, due to the action of centrifugal force, the pressure of the concrete fluid in the steel pipe cavity remains at a low level, avoiding the risk of pipe wall bulging or deformation due to excessive pressure.
[0022] 4) Wide applicability of the device: The vertically arranged double-layer steel pipe, with the aid of gravity at a low speed of rotation, can complete the flow of concrete, has low requirements for rotation speed, and can be applied to steel pipes of various sizes, reducing the strength requirements for filling equipment.
[0023] 5) Promote air discharge: The vertical design of the steel pipe is conducive to the flow and compaction of concrete in the cavity, and also facilitates air discharge, further improving the filling quality of the concrete and the stability of the structure.
[0024] 6) Vibration compaction effect: The vibration generated by the steel pipe body during rotation can serve as a vibrating effect, helping to expel air bubbles and compact the concrete inside, improving the strength and durability of the concrete.
[0025] 7) Solve the filling problem of sharp corner parts: This technology can effectively solve the problem of filling the sharp corner parts between the annular sealing plate and the spiral ring at the end of the steel pipe body, ensuring that the concrete can uniformly fill every corner and fill more fully.
[0026] 8) Production line matching: This technology is easy to form a matched production line with other processes such as cutting, welding, and corrosion protection of the steel pipe, realizing automatic and continuous production and improving the overall construction efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 is a structural schematic diagram of a concrete filling device according to an embodiment of the present application.
[0028] BRIEF DESCRIPTION OF DRAWINGS
[0029] 10, concrete filling device; 100, double-layer steel pipe; 101, spiral cavity; 110, pipe body; 111, outer pipe; 112, inner pipe; 120, spiral ring plate; 130, annular sealing plate; 131, grouting port; 132, exhaust and drainage port; 200, rotating tray; 300, fixed assembly; 310, support; 320, roller; 400, concrete conveying assembly; 410, conveying pump; 420, pipeline assembly; 500, vacuum pump; 501, vacuum pipe. DETAILED DESCRIPTION
[0030] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many different ways other than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.
[0031] Figure 1 , Figure 1 A structural schematic diagram of a concrete filling device 10 in an embodiment of the present application is shown. The double-layer steel pipe 100 includes an inner pipe 112 and an outer pipe 111 which are sleeved, and a containing cavity is formed between the inner pipe 112 and the outer pipe 111. One end of the double-layer steel pipe 100 is provided with a grouting port 131 and an exhaust and drainage port 132 which communicate the containing cavity with the outside. The concrete filling device 10 provided in an embodiment of the present application includes a rotating tray 200 and a concrete conveying assembly 400. The double-layer steel pipe 100 is vertically arranged on the rotating tray 200 along a first direction, and the rotating tray 200 is configured to be rotatable about the first direction. The concrete conveying assembly 400 is used to convey concrete to the containing cavity of the steel pipe through the grouting port 131.
[0032] The concrete filling device 10 improves the concrete filling efficiency: under the dual action of centrifugal force and gravity, the flow and filling of concrete in the spiral cavity are more smooth, which helps to improve the filling efficiency. The centrifugal force can help overcome the resistance in the flow process of the concrete, so that the concrete can gradually fill the inner cavity of the steel pipe from the end of the steel pipe body 110 on the other side of the grouting port 131 to the end of the grouting port 131. Reduce air bubbles and hollowing: due to the action of centrifugal force, during the concrete filling process, the concrete adheres to the outside of the cavity and forms a gap with the inner wall of the cavity that allows air to flow. Under the action of gravity and the buoyancy of the gas, the air in the cavity will be discharged in the opposite direction, forming a smooth exhaust passage. This process helps to reduce air bubbles in the concrete, avoids the phenomenon of hollowing and delamination caused by air bubbles, and thus improves the density and overall performance of the concrete. Low-pressure filling: during the filling process, due to the action of centrifugal force, the pressure of the concrete fluid in the steel pipe cavity remains at a low level, avoiding the risk of pipe wall bulging or deformation caused by excessive pressure. Wide applicability of the device: the vertically arranged double-layer steel pipe 100 can complete the flow of concrete at a low rotation speed with the aid of gravity assistance, has low requirements for rotation speed, and can be applied to steel pipes of various sizes, reducing the strength requirements for filling equipment. Promote air discharge: the vertical design of the steel pipe is conducive to the flow and compaction of the concrete in the cavity, and also facilitates air discharge, further improving the filling quality of the concrete and the stability of the structure. Vibration compaction effect: the vibration generated by the steel pipe body 110 during rotation can act as a vibrator, helping to expel air bubbles and compact the concrete inside, improving the strength and durability of the concrete. Solve the filling problem of sharp corner parts: this technology can effectively solve the problem of filling the sharp corner parts between the annular sealing plate and the spiral ring at the end of the steel pipe body 110, ensuring that the concrete can uniformly fill every corner and fill more fully. Production line matching: this technology is easy to form a matched production line with other processes such as cutting, welding, and corrosion prevention of the steel pipe, realizing automatic and continuous production and improving the overall construction efficiency. The technical features of the above-described embodiments can be combined in any way. In order to make the description concise, not all possible combinations of technical features in the above-described embodiments are described, but as long as the combinations of technical features do not exist contradictory, they should be considered as the scope of the present disclosure.
[0033] In one embodiment, the rotating tray 200 is arranged parallel to the ground (or any horizontal placement surface), and the first direction is perpendicular to the ground, that is, the axial direction of the double-layer steel pipe 100.
[0034] In one embodiment, the rotating tray 200 is provided with a clamping member for clamping the double-layer steel pipe 100, so that the double-layer steel pipe 100 rotates synchronously with the rotating tray 200.
[0035] In one embodiment, the double-layer steel pipe 100 comprises a pipe body 110 and a spiral ring plate 120, the pipe body 110 comprises the inner pipe 112 and the outer pipe 111, the spiral ring plate 120 is spirally arranged between the inner pipe 112 and the outer pipe 111, the spiral ring plate 120 divides the containing cavity into spiral cavities 101, and the concrete conveying assembly 400 is used for conveying concrete to the spiral cavities 101. Further, the pipe body 110 rotates in the direction opposite to the spiral advancing direction of the spiral ring plate 120.
[0036] In one embodiment, the outer pipe 111 is a straight pipe, or the outer pipe 111 is a wave-shaped pipe. The straight pipe is a cylindrical tubular structure formed by a flat steel plate. The wave-shaped pipe is a cylindrical tubular structure with corrugated protrusions and depressions on the outer surface, which is formed by a corrugated steel plate.
[0037] In one embodiment, the grouting port 131 is located on the side of the double-layer steel pipe 100 away from the rotating tray 200. When the double-layer steel pipe 100 is vertically arranged on the rotating tray 200, the end face of the lower end is in contact with the rotating tray 200, and the end face of the upper end is provided with at least one grouting port 131, and the grouting port 131 is arranged at intervals with the exhaust and drainage port 132.
[0038] In one embodiment, the double-layer steel pipe 100 further comprises an annular sealing plate 130, the annular sealing plate 130 is arranged at both ends of the inner pipe 112 and the outer pipe 111, and the annular sealing plate 130 away from the rotating tray 200 is provided with the grouting port 131 and the exhaust and drainage port 132 which are in communication with the outside. The annular sealing plate 130 is respectively welded with the upper and lower ends of the inner pipe 112 and the outer pipe 111 to seal the containing cavity. The grouting port 131 and the exhaust and drainage port 132 are arranged at intervals on the annular sealing plate 130.
[0039] In one of the embodiments, the concrete filling device 10 further comprises a fixing assembly 300 abutting against the outer pipe 111 wall of the double-layer steel pipe 100, and the double-layer steel pipe 100 is capable of rotating relative to the fixing assembly 300. The fixing assembly 300 comprises a support 310 and a roller 320 arranged on the support 310, and the support 310 defines a placing position of the double-layer steel pipe 100 to abut the roller 320 against the outer pipe 111 wall of the double-layer steel pipe 100. Further, the support 310 is fixedly arranged on an external structure, and the support 310 is arranged in at least two, and a plurality of supports 310 are arranged on the same horizontal plane or different horizontal planes to form a circular or cylindrical space, and the area defined by the plurality of supports 310 has a diameter equal to the sum of the diameter of the roller 320 and the outer diameter of the double-layer steel pipe 100. For example, when the support 310 is arranged in two, the circumferential interval between the two supports 310 is 180°.
[0040] In one of the embodiments, the exhaust and drainage port 132 is arranged on the side of the double-layer steel pipe 100 away from the rotating tray 200, and the concrete filling device 10 further comprises a vacuum pump 500 and a vacuum pipe 501 connecting the vacuum pump 500 and the exhaust and drainage port 132. The exhaust and drainage port 132 is arranged apart from the grouting port 131, and when the exhaust and drainage port 132 and the grouting port 131 are arranged in one each, the circumferential interval between the exhaust and drainage port 132 and the grouting port 131 is 180°.
[0041] In one of the embodiments, the vacuum pump 500 rotates synchronously with the rotating tray 200, and / or the vacuum pipe 501 rotates synchronously with the rotating tray 200. When the vacuum pump 500 rotates synchronously with the rotating tray 200, the vacuum pump 500 and the vacuum pipe 501 can be mounted on the rotating tray 200, and when the vacuum pipe 501 rotates synchronously with the rotating tray 200, the vacuum pipe 501 and the vacuum pump 500 are connected through a rotatable pipe joint.
[0042] In one of the embodiments, the concrete conveying assembly 400 comprises a conveying pump 410 and a pipe assembly 420 connecting the conveying pump 410 and the grouting port 131, and the concrete conveying assembly 400 rotates synchronously with the rotating tray 200, or the pipe assembly 420 rotates synchronously with the rotating tray 200. When the concrete conveying assembly 400 rotates synchronously with the rotating tray 200, the concrete conveying assembly 400 can be mounted on the rotating tray 200, and when the pipe assembly 420 rotates synchronously with the rotating tray 200, the concrete conveying assembly 400 and the pipe assembly 420 are connected through a rotatable pipe joint.
[0043] In one of the embodiments, the pipe assembly 420 comprises a first pipe and a second pipe, the first pipe is connected between the second pipe and the grouting hole 131, the second pipe is connected between the first pipe and the concrete conveying assembly 400, the first pipe rotates around the axis of the second pipe as the double-layer steel pipe 100 rotates. The first pipe and the second pipe are connected through a rotatable pipe joint.
[0044] In the description of the present application, it should be understood that, if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship shown in the drawings, and are only used for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0045] In addition, if these terms "first", "second" appear, these terms are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features referred to. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.
[0046] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0047] In the present application, unless specifically defined otherwise, if there is an expression "on" or "under" or similar, it can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "on", "above" and "over" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0048] It should be noted that if an element is referred to as being "fixed" or "attached" to another element, it can be directly on the other element or there can be an intervening element. If an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or intervening elements can be present. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions as used herein are for purposes of explanation only and are not intended to be limiting.
[0049] The technical features of the above-described embodiments can be combined in any manner. In order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but it should be considered that any combination of the technical features is within the scope of the present disclosure, as long as the combination does not result in a contradiction.
[0050] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present application, and these are within the scope of protection of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.
Claims
1. A concrete filling device for a double-skin steel tube sandwich, characterized in that, The double-layer steel pipe comprises an inner pipe and an outer pipe sleeved on the inner pipe, and a containing cavity is formed between the inner pipe and the outer pipe. One end of the double-layer steel pipe is provided with a grouting port and an exhaust and drainage port for connecting the containing cavity with the outside. The double-layer steel pipe comprises a pipe body and a spiral ring plate. The pipe body comprises the inner pipe and the outer pipe sleeved on the inner pipe. The spiral ring plate is arranged between the inner pipe and the outer pipe, and divides the containing cavity into spiral cavities. The concrete filling device comprises: a rotating tray, on which the double-layer steel pipe is vertically arranged in a first direction, and the rotating tray is configured to be rotatable about the first direction; and a concrete conveying assembly for conveying concrete to the spiral cavities through the grouting port.
2. The dual-wall steel pipe sandwich concrete filling device according to claim 1, characterized by, The grouting port is located on a side of the double-layer steel pipe away from the rotating tray.
3. The dual-wall steel pipe sandwich concrete filling apparatus according to claim 2, wherein The double-layer steel pipe further comprises annular sealing plates arranged at both ends of the inner pipe and the outer pipe. The annular sealing plates arranged on the side away from the rotating tray are provided with the grouting port and the exhaust and drainage port, which are both connected with the outside.
4. The dual-wall steel pipe sandwich concrete filling apparatus according to claim 1, wherein The concrete filling device further comprises a fixing assembly abutting against the outer pipe wall of the double-layer steel pipe, and the double-layer steel pipe is rotatable relative to the fixing assembly.
5. The dual-wall steel pipe sandwich concrete filling apparatus according to claim 4, wherein The fixing assembly comprises a support and a roller arranged on the support. The support defines a placement position of the double-layer steel pipe, so that the roller abuts against the outer pipe wall of the double-layer steel pipe.
6. The dual-wall steel pipe sandwich concrete filling apparatus according to claim 1, wherein The exhaust and drainage port is located on a side of the double-layer steel pipe away from the rotating tray. The concrete filling device further comprises a vacuum pump and a vacuum pipe connecting the vacuum pump and the exhaust and drainage port.
7. The dual-wall steel pipe sandwich concrete filling apparatus according to claim 6, wherein The vacuum pipe rotates synchronously with the rotating tray.
8. The dual-wall steel pipe sandwich concrete filling apparatus according to claim 1, wherein The concrete conveying assembly comprises a conveying pump and a pipeline assembly connecting the conveying pump and the grouting port. The concrete conveying assembly rotates synchronously with the rotating tray, or the pipeline assembly rotates synchronously with the rotating tray.
9. The dual-wall steel pipe sandwich concrete filling apparatus according to claim 8, wherein The pipeline assembly comprises a first pipeline and a second pipeline. The first pipeline is connected between the second pipeline and the grouting port, and the second pipeline is connected between the first pipeline and the concrete conveying assembly. The first pipeline rotates about the axis of the second pipeline when the double-layer steel pipe rotates.
10. The dual-wall steel pipe sandwich concrete filling apparatus according to claim 1, wherein The rotating tray is provided with a clamping member for clamping the double-layer steel pipe.