A device for effectively controlling the separation of concrete feeding

Abstract

The utility model relates to a device for effectively controlling the separation of concrete feeding, which solves the problems that the smooth inner wall of the current string tube cannot decelerate, cannot eliminate the large drop, the feeding port, the tube body, and the bottom of the tube are not centered or are swung out of the center due to the impact of the concrete feeding, which easily causes the concrete feeding not to be in the middle of the template, and the coarse and fine aggregates of the concrete are easily separated and concentrated, or the height difference of the casting surface is large, thereby affecting the strength and appearance of the pier column. The utility model has guide plates fixed on the inner walls of the top string tube, the bottom string tube, and the multiple middle string tubes, which can effectively reduce the vertical drop distance of the concrete, effectively mitigate the impact force of the concrete falling vertically, and the centering limit mechanism can keep the string tube in the middle, which is not easy to cause the problems of coarse and fine aggregates of the concrete to separate and concentrate, or the height difference of the casting surface to be large.

Description

Technical Field

[0001] The utility model relates to a device for effectively controlling the separation of concrete materials, and belongs to the technical field of concrete pouring auxiliary equipment. Background Art

[0002] The concrete piers of highway bridges are important supporting load-bearing structures of bridges. Most of the pier construction is carried out by casting on-site using erected formwork. The quality control of the construction process directly affects the internal and external quality of the piers. Due to inadequate process control, the finished concrete of the piers often suffers from quality defects such as looseness, segregation, water marks, stratification, color difference, and honeycombed surfaces.

[0003] After analyzing and studying the entire process of pier construction, it is found that in addition to the quality of the concrete mixture itself, construction control during concrete pouring is one of the important key technologies affecting the quality of piers.

[0004] In the current pier concrete construction in my country, in order to reduce the unevenness and segregation of concrete feeding process, the concrete is generally dropped to the casting surface through a string tube. The commonly used simple string tubes are iron string tubes. There are two problems with this type of string tube: first, the smooth inner wall cannot decelerate and cannot eliminate the problem of large drop; second, the string tube feed port, tube body, and tube bottom port are not centered or swing out of center due to the impact of concrete feeding, which easily causes the concrete feeding to not be in the middle of the template and irregularly deviate to one side. Once improperly controlled, the coarse and fine aggregates of the concrete will separate, concentrate (i.e., segregate), or the height difference of the casting surface will be large, thus affecting the strength and appearance of the pier. Utility Model Content

[0005] The utility model provides a device for effectively controlling the separation of concrete feeding, which solves the problems that the smooth inner wall of the current string tube cannot decelerate, the large drop cannot be eliminated, the feeding port, the tube body and the bottom port of the string tube are not centered or are swung and not centered due to the impact of the concrete feeding, which easily causes the concrete feeding to be not in the middle of the template, and the coarse and fine aggregates of the concrete are easily separated and concentrated, or the height difference of the casting surface is large, thereby affecting the strength and appearance of the pier column.

[0006] The utility model relates to a device for effectively controlling the separation of concrete feeding, comprising a string tube, wherein the string tube comprises a top string tube, a bottom string tube and a plurality of intermediate string tubes, guide plates are fixed on the inner walls of the top string tube, the bottom string tube and the plurality of intermediate string tubes, connecting structures are arranged between adjacent intermediate string tubes, and between the intermediate string tubes and the top string tube and the bottom string tube, and centering limiting mechanisms are arranged on the outer walls of the top string tube and the bottom string tube.

[0007] As a preferred embodiment, the center limiting mechanism includes a plurality of telescopic rods evenly installed on the outer walls of the top string tube and the bottom string tube, and a limiting plate is fixed to the outer end of the telescopic rod. The telescopic rod is set to be able to adjust the telescopic rod according to the diameter of the pier column formwork or the steel cage, and has a wide range of adaptability.

[0008] As a preferred embodiment, both ends of the limit plate are tilted inward, and the limit plate does not contact the formwork or the steel cage, which is convenient for lifting the string tube as the casting is carried out. It can effectively control the swing from being centered and prevent contact or scratching from affecting the lifting.

[0009] As a preferred embodiment, the telescopic rod includes a telescopic inner sleeve and a telescopic outer sleeve. The telescopic inner sleeve is arranged in the inner hole of the outer end of the telescopic outer sleeve. Both the telescopic inner sleeve and the telescopic outer sleeve are provided with locking sockets. The outer end of the telescopic outer sleeve is provided with a locking bolt that cooperates with the telescopic socket to facilitate the adjustment of the position of the limit plate.

[0010] As a preferred embodiment, a pin is fixed to the inner end of the telescopic outer sleeve, an ear plate is rotatably mounted on the pin, and a limit support plate is provided below the ear plate, which can be folded to facilitate workers to enter and exit the template.

[0011] As a preferred embodiment, the connecting structure includes rings fixed on the upper and lower outer walls of the top string tube and the middle string tube and the upper outer wall of the bottom string tube. Chains are fixed on the rings at the lower ends of the top string tube and the middle string tube, and a hook is fixed on the other end of the chain. The hook is hung on the adjacent ring at the lower part to facilitate the connection of the string tubes.

[0012] As a preferred embodiment, the connection structure also includes connecting bosses arranged at the bottom of the top string tube and the middle string tube, and connecting recesses cooperating with the connecting bosses are provided in the top inner holes of the middle string tube and the bottom string tube to facilitate the positioning of the connecting string tubes.

[0013] The utility model has the following beneficial effects:

[0014] Guide plates are fixed on the inner walls of the top string tube, the bottom string tube and multiple intermediate string tubes, which can effectively reduce the vertical falling distance of concrete and effectively mitigate the impact force of concrete falling vertically. The center limiting mechanism can keep the string tube in the middle, and it is not easy to have problems such as separation and concentration of coarse and fine aggregates of concrete or large height difference of casting surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the top string tube;

[0017] Figure 3 It is a structural schematic diagram of the middle string tube;

[0018] Figure 4It is a structural schematic diagram of the bottom string tube;

[0019] In the figure: 1. top string tube, 2. telescopic outer sleeve, 3. telescopic inner sleeve, 4. limit support plate, 5. guide plate, 6. lifting ring, 7. middle string tube, 8. connecting concave platform, 9. bottom string tube, 10. connecting convex platform, 11. hook, 12. chain, 13. ear plate, 14. limit plate, 15. locking socket, 16. pin, 17. locking bolt. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with embodiments.

[0021] Embodiment 1, as Figures 1 to 4 As shown, the utility model is a device for effectively controlling the discharging and separation of concrete, including a string tube, the string tube including a top string tube 1, a bottom string tube 9 and a plurality of intermediate string tubes 7, guide plates 5 are fixed on the inner walls of the top string tube 1, the bottom string tube 9 and the plurality of intermediate string tubes 7, connecting structures are provided between adjacent intermediate string tubes 7, and between the intermediate string tubes 7 and the top string tube 1 and the bottom string tube 9, and a centering limit mechanism is provided on the outer walls of the top string tube 1 and the bottom string tube 9. Each section of the intermediate string tube 7 is 2m long, and the internal welding distance of each section is 0.5m from the end, staggered by 1m up and down, symmetrical on the left and right, and has two spiral guide plates 5 (the spacing refers to the distance to the center of the guide plates 5. The distance between the guide plates 5 in a single section is 1m, and the spacing between adjacent guide plates 5 between two sections is also 1m). It can effectively reduce the vertical falling distance of concrete and effectively mitigate the impact force of the vertical falling of concrete.

[0022] During operation, the top string tube 1, multiple middle string tubes 7, and bottom string tube 9 are connected through a connecting structure, and then the middle limiting mechanism is installed on the top string tube 1 and the bottom string tube 9, and then the string tube is hung and placed in the inner hole of the steel cage of the pier column. The bottom string tube 9 stops when the distance between it and the bottom of the steel cage is less than 2 meters, and then concrete is poured. The concrete is poured from the top of the string tube. Since a spiral guide plate 5 is arranged inside the string tube, the vertical falling distance of the concrete can be effectively reduced, and the impact force of the vertical falling concrete can be effectively mitigated. When the string tube is impacted and shaken, the limiting mechanism can keep the string tube in the middle position. When a section is poured and the concrete is about to reach the bottom of the bottom string tube 9, the east string tube can be lifted upward, and then the next section of the middle string tube 7 is removed, and the pouring is continued until all the pouring is completed.

[0023] Embodiment 2, based on embodiment 1, the centering limit mechanism includes a plurality of telescopic rods evenly mounted on the outer wall of the top string tube 1 and the bottom string tube 9, and the outer end of the telescopic rod is fixed with a limit plate 14. The top string tube 1, the bottom string tube 9 and the middle string tube are all 72mm tinplate, which are processed by mechanical rolling or curling. A 2mm thick guide plate is welded on the inner wall of the roll-formed cylinder, and then the cylinder is vertically welded to form.

[0024] Both ends of the limiting plate 14 are tilted inwards.

[0025] The telescopic rod includes a telescopic inner sleeve 3 and a telescopic outer sleeve 2. The telescopic inner sleeve 3 is arranged in the inner hole of the outer end of the telescopic outer sleeve 2. Both the telescopic inner sleeve 3 and the telescopic outer sleeve 2 are provided with locking sockets 15. The outer end of the telescopic outer sleeve 2 is provided with a locking bolt 17 that cooperates with the telescopic socket.

[0026] The inner end of the telescopic outer sleeve 2 is fixed with a pin 16, and the pin 16 is rotatably mounted with an ear plate 13, and a limit support plate 4 is provided below the ear plate 13. The telescopic outer sleeve 2 is a 50cm long diameter 16mm round steel sleeve, and the telescopic inner sleeve 3 is a 50cm long diameter 12mm round steel sleeve. The telescopic inner sleeve 3 and the telescopic outer sleeve 2 are drilled with holes in the double-layer pipes, with a hole every 5cm. The telescopic outer sleeve 2 is welded to the outside of the last section string tube in a cross shape, and the telescopic inner sleeve 3 is used as a telescopic section, and the telescopic length can be adjusted according to the diameter of the pier column. The 16mm telescopic outer sleeve 2 of the top string tube 1 is connected to the upper mouth of the cylinder in a latch-type manner, and can be flipped upward to be close to the outer wall of the string tube. When adjusting the length of the telescopic rod, the limit plate 14 at the end of each telescopic rod is 10cm smaller than the template or the steel cage. It can effectively control the swing from being centered and prevent contact or scratches from affecting the lifting.

[0027] The connecting structure includes a lifting ring 6 fixed on the outer walls of the upper and lower ends of the top string tube 1 and the middle string tube 7 and the upper outer wall of the bottom string tube 9. A chain 12 is fixed to the lifting ring 6 at the lower end of the top string tube 1 and the middle string tube 7. A hook 11 is fixed to the other end of the chain 12, and the hook 11 is hung on the adjacent lifting ring 6 at the lower part.

[0028] The connection structure also includes a connection boss 10 arranged at the bottom of the top string tube 1 and the middle string tube 7, and a connection recess 8 matching the connection boss 10 is arranged in the top inner hole of the middle string tube 7 and the bottom string tube 9. When connecting, the connection boss 10 is inserted into the connection recess 8, and then the hook 11 is hung on the lower ring 6.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0030] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

Claims

1. A device for effectively controlling the separation of concrete feeding, comprising a string tube, characterized in that: The string tube comprises a top string tube (1), a bottom string tube (9) and a plurality of intermediate string tubes (7); guide plates (5) are fixed on the inner walls of the top string tube (1), the bottom string tube (9) and the plurality of intermediate string tubes (7); connecting structures are provided between adjacent intermediate string tubes (7) and between the intermediate string tubes (7) and the top string tube (1) and the bottom string tube (9); and centering limit mechanisms are provided on the outer walls of the top string tube (1) and the bottom string tube (9).

2. The device for effectively controlling the concrete feeding and separation according to claim 1 is characterized in that: The centering limiting mechanism comprises a plurality of telescopic rods evenly mounted on the outer walls of the top string tube (1) and the bottom string tube (9), and the outer ends of the telescopic rods are fixed with limiting plates (14).

3. The device for effectively controlling the concrete feeding and separation according to claim 2 is characterized in that: Both ends of the limiting plate (14) are tilted inwards.

4. The device for effectively controlling the concrete feeding and separation according to claim 2 is characterized in that: The telescopic rod comprises a telescopic inner sleeve (3) and a telescopic outer sleeve (2); the telescopic inner sleeve (3) is arranged in an inner hole at the outer end of the telescopic outer sleeve (2); the telescopic inner sleeve (3) and the telescopic outer sleeve (2) are both provided with locking sockets (15); and the outer end of the telescopic outer sleeve (2) is provided with a locking bolt (17) that matches the telescopic socket.

5. The device for effectively controlling the concrete feeding and separation according to claim 4 is characterized in that: A pin shaft (16) is fixed to the inner end of the telescopic outer sleeve (2), and an ear plate (13) is rotatably mounted on the pin shaft (16), and a limit support plate (4) is provided below the ear plate (13).

6. The device for effectively controlling the concrete feeding and separation according to claim 1, characterized in that: The connection structure comprises a lifting ring (6) fixed on the outer walls of the upper and lower ends of the top string tube (1) and the middle string tube (7) and the outer wall of the upper end of the bottom string tube (9); a chain (12) is fixed on the lifting ring (6) at the lower end of the top string tube (1) and the middle string tube (7); a hook (11) is fixed on the other end of the chain (12); and the hook (11) is hung on the lower adjacent lifting ring (6).

7. The device for effectively controlling the concrete feeding and separation according to claim 6, characterized in that: The connection structure also includes a connection boss (10) arranged at the bottom of the top string tube (1) and the middle string tube (7), and a connection recess (8) matching the connection boss (10) is arranged in the top inner hole of the middle string tube (7) and the bottom string tube (9).

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