Detachable concrete pouring tumbling barrel

Abstract

The invention discloses a detachable concrete pouring tumbling cylinder, and belongs to the technical field of building pouring, the detachable concrete pouring tumbling cylinder comprises a pouring groove, a plurality of tumbling cylinder main bodies are sequentially connected in series at the bottom of the pouring groove, the detachable concrete pouring tumbling cylinder further comprises guide cylinders connected to the bottoms of the tumbling cylinder main bodies, the cross section of each guide cylinder is conical, and each guide cylinder is of a flexible structure; the small-diameter end of the bottom of the guide cylinder is connected, and the guide taper of the guide cylinder is controlled through the aperture control mechanism. According to the concrete tumbling barrel, through the designed aperture control mechanism, when concrete is conveyed to the top of a pouring groove from a pump truck during pouring, the concrete can sequentially enter the space between the tumbling barrel body and the guide barrel, the taper of the guide barrel can be controlled to meet the guide requirements of concrete of different grades through shrinkage of the taper of the guide barrel, and falling material segregation is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of building pouring, and particularly relates to a detachable concrete pouring string barrel. BACKGROUND

[0002] In building engineering, concrete pouring is a key process for ensuring the structural integrity and mechanical properties. Especially in the construction of high-rise buildings, deep foundation pits or large components, in order to prevent the segregation phenomenon of aggregate and cement mortar separation due to excessive height during the falling process of concrete, it is necessary to guide the concrete from high place to pouring point through string barrel or chute.

[0003] In the prior art, when the concrete pouring string barrel is applied, the fixed aperture of the string barrel may cause poor discharge or blockage for concrete with poor fluidity, and the too fast falling speed may exacerbate the segregation for concrete with good fluidity, so it is difficult to realize accurate control of the pouring process, which affects the final pouring quality. The connection between multiple string barrels is generally through hook connection, which cannot adapt to small-range offset installation conditions, increases the on-site docking difficulty, and there is room for improvement. SUMMARY

[0004] The purpose of the present application is to solve the problem that it is difficult to realize accurate control of the pouring process, which affects the final pouring quality, and the connection between multiple string barrels cannot adapt to small-range offset installation conditions, and a detachable concrete pouring string barrel is proposed.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] A detachable concrete pouring string barrel, comprising a pouring groove, a plurality of string barrel bodies are sequentially connected at the bottom of the pouring groove, and further comprising:

[0007] A guide barrel connected to the bottom of the string barrel body, the guide barrel has a conical cross-sectional shape, and the guide barrel is a flexible structure;

[0008] An aperture control mechanism connected to the smaller end of the bottom of the guide barrel, the aperture control mechanism controls the guide taper of the guide barrel;

[0009] A plurality of lock chain mechanisms are respectively connected in the corresponding string barrel bodies, and the string barrel bodies are connected by the plurality of lock chain mechanisms.

[0010] Further description of the above technical scheme:

[0011] The aperture control mechanism further comprises:

[0012] A contraction ring connected to the bottom end of the tapered portion of the guide barrel, and the contraction ring is configured to contract in the circumferential direction to pull the tapered portion of the guide barrel to contract and adjust the taper.

[0013] The inner fixing ring is coaxially sleeved outside the contraction ring;

[0014] The brake blocks are arranged on the inside of the inner fixing ring in a radially movable and surrounding manner, and the contraction of the contraction ring is controlled by extruding the outside of the contraction ring through the brake blocks.

[0015] The fixed seat is connected to the outside of the inner fixing ring through the plate body on the inside, and the mounting members are connected to the both sides of the outer periphery of the fixed seat.

[0016] Further description of the above technical solution:

[0017] The aperture control mechanism further comprises:

[0018] The contraction ring is connected to the bottom end of the guide cylinder taper portion, and the contraction ring is configured to contract in the circumferential direction to pull the guide cylinder taper portion to contract and adjust the taper.

[0019] The inner fixing ring is coaxially sleeved outside the contraction ring;

[0020] The brake blocks are arranged on the inside of the inner fixing ring in a radially movable and surrounding manner, and the contraction of the contraction ring is controlled by extruding the outside of the contraction ring through the brake blocks.

[0021] The fixed seat is connected to the outside of the inner fixing ring through the plate body on the inside, and the mounting members are connected to the both sides of the outer periphery of the fixed seat.

[0022] Further description of the above technical solution:

[0023] Further comprising:

[0024] The control plates are arranged on the bottom of the rotating ring in a surrounding manner along the rotating ring axis, and the control plates are connected with the limiting teeth on the inside.

[0025] The limiting plates are connected to the outside of the fixed seat along the rotating ring axis, and the limiting plates have tooth grooves corresponding to the limiting teeth on the outside, and the rotating angle of the rotating ring is controlled by the meshing of the control plates and the limiting plates on the opposite surfaces to control the extrusion stroke of the extrusion wedge on the extrusion rod.

[0026] Further description of the above technical solution:

[0027] Further comprising:

[0028] The control plates are arranged on the bottom of the rotating ring in a surrounding manner along the rotating ring axis, and the control plates are connected with the limiting teeth on the inside.

[0029] The limiting plate is connected to the outside of the fixed seat along the rotating ring axis, and the outside of the limiting plate has a plurality of tooth grooves corresponding to the limiting teeth.

[0030] Further description of the above technical solution:

[0031] Further comprising:

[0032] The control plate is arranged around the bottom of the rotating ring along the rotating ring axis, and the inner side of the control plate is connected with a plurality of limiting teeth.

[0033] The limiting plate is connected to the outside of the fixed seat along the rotating ring axis, and the outside of the limiting plate has a plurality of tooth grooves corresponding to the limiting teeth.

[0034] Further description of the above technical solution:

[0035] Further comprising:

[0036] The control plate is arranged around the bottom of the rotating ring along the rotating ring axis, and the inner side of the control plate is connected with a plurality of limiting teeth.

[0037] The limiting plate is connected to the outside of the fixed seat along the rotating ring axis, and the outside of the limiting plate has a plurality of tooth grooves corresponding to the limiting teeth.

[0038] Further description of the above technical solution:

[0039] Further comprising:

[0040] The control plate is arranged around the bottom of the rotating ring along the rotating ring axis, and the inner side of the control plate is connected with a plurality of limiting teeth.

[0041] The limiting plate is connected to the outside of the fixed seat along the rotating ring axis, and the outside of the limiting plate has a plurality of tooth grooves corresponding to the limiting teeth.

[0042] Further description of the above technical solution:

[0043] Further comprising:

[0044] The control plate is arranged around the bottom of the rotating ring along the rotating ring axis, and the inner side of the control plate is connected with a plurality of limiting teeth.

[0045] The plurality of limiting plates are connected to the outside of the fixed seat along the rotating ring axis, and the outside of the limiting plate has a plurality of tooth grooves corresponding to the limiting teeth.

[0046] In summary, due to the adoption of the technical scheme, the application has the following beneficial effects:

[0047] 1、In the application, when the concrete is delivered to the top of the pouring groove by the self-pumping truck during pouring, the concrete can enter between the main body of the string drum and the guide drum in sequence, and the taper of the guide drum can be controlled to adapt to the guiding needs of different grades of concrete, thereby reducing material segregation.

[0048] 2、In the application, when the taper needs to be adjusted, the rotating ring is rotated in the fixed seat, the rotating ring can drive the inner side extrusion wedge to press the extrusion rod, the extrusion rod drives the inner side brake block to extrude and shrink the shrink ring, the shrink ring is shrunk to pull the tapered bottom end of the guide drum to adjust the aperture, the aperture of the bottom of the guide drum is adjusted to adjust the taper of the guide drum, and the brake block moving synchronously in the radial direction can keep the equidistant shrinkage of the shrink ring, which is beneficial to improve the shrinkage stability and ensure the accuracy and repeatability of the taper adjustment.

[0049] 3、In the application, the plurality of main bodies of the string drum can be clamped into the adjacent locking screw sleeves through the universal ball, and the locking screw sleeves can be fully locked with the locking screw rods by rotating the locking screw rods outside the locking screw sleeves, so that the plurality of locking rods can be connected with each other, and the main bodies of the string drum can be connected in sequence through the connection of the locking rods, so as to replace the instability of the traditional hook connection, when the universal ball rotates in the locking screw sleeve, the insert piece can keep the locking stability of the universal ball through the coupling with the limiting groove, and the deflection angle of the universal ball in the locking screw sleeve can be adjusted to adapt to the adjustment and adaptation of the offset position of the plurality of string drums in the longitudinal direction, so as to ensure the continuity and safety of the pouring process. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 The application provides a whole structure schematic diagram of the detachable concrete pouring string drum;

[0051] Figure 2 The application provides an assembly structure schematic diagram of the guide drum of the detachable concrete pouring string drum;

[0052] Figure 3 The application provides a top view structure schematic diagram of the main body of the string drum of the detachable concrete pouring string drum;

[0053] Figure 4A detachable concrete pouring string barrel is provided in the present application, and a lateral structure schematic diagram of a string barrel body is provided in the present application.

[0054] Figure 5 A detachable concrete pouring string barrel is provided in the present application, and a lateral structure schematic diagram of a string barrel body is provided in the present application. Figure 4 A structure schematic diagram of A part in the present application is enlarged.

[0055] Figure 6 A hole diameter control mechanism split structure schematic diagram of a detachable concrete pouring string barrel is provided in the present application.

[0056] Figure 7 A partial split structure schematic diagram of a detachable concrete pouring string barrel is provided in the present application.

[0057] Figure 8 A lock chain mechanism structure schematic diagram of a detachable concrete pouring string barrel is provided in the present application.

[0058] Figure 9 A structure schematic diagram of B part in the present application is enlarged. Figure 8

[0059] Legend:

[0060] 1, pouring groove; 2, string barrel body; 3, hole diameter control mechanism; 301, fixed seat; 302, rotating ring; 303, control plate; 304, limiting plate; 305, extrusion wedge; 306, extrusion rod; 307, first spring; 308, brake block; 309, contraction ring; 310, contraction groove; 311, tensioning tendon; 312, inner fixing ring; 4, guide cylinder; 5, lock chain mechanism; 501, lock rod; 502, guide piece; 503, universal ball; 504, locking screw sleeve; 505, locking screw ring; 506, telescopic rod; 507, second spring; 508, fitting seat; 509, limiting groove; 510, insertion piece; 511, abutting block; 6, connecting cable; 7, tensioning groove. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0062] Please refer to Figures 1-9 The present application provides a technical solution: a detachable concrete pouring string barrel, comprising a pouring groove 1, and a plurality of string barrel bodies 2 are sequentially connected at the bottom of the pouring groove 1, and further comprising:

[0063] ​The guide cylinder 4 is connected to the bottom of the string cylinder body 2, the cross-sectional shape of the guide cylinder 4 is conical, and the guide cylinder 4 is flexible;

[0064] The aperture control mechanism 3 is connected to the smaller diameter end of the bottom of the guide cylinder 4, and the guide taper of the guide cylinder 4 is controlled through the aperture control mechanism 3;

[0065] The lock chain mechanism 5 is connected to the corresponding string cylinder body 2, and the string cylinder body 2 is connected by the mutual stringing of the plurality of lock chain mechanisms 5.

[0066] Specifically, through the design of the aperture control mechanism 3, the diameter of the bottom of the guide cylinder 4 at the bottom of the string cylinder body 2 can be controlled, which is beneficial to control the segregation of concrete between the string cylinder bodies 2, improve the pouring control precision, and through the design of the lock chain mechanism 5, the adjacent string cylinder bodies 2 can be quickly connected, which is beneficial to improve the arrangement adaptability between the plurality of string cylinder bodies 2 through the partially offset lock chain mechanism 5, and improve the anti-segregation pouring of high-height concrete.

[0067] Please refer to Figures 4-6 , the aperture control mechanism 3 further comprises:

[0068] The shrink ring 309 is connected to the bottom end of the tapered portion of the guide cylinder 4, and the shrink ring 309 is configured to shrink circumferentially to pull the tapered portion of the guide cylinder 4 to adjust the taper;

[0069] The inner fixing ring 312 is coaxially sleeved outside the shrink ring 309;

[0070] The brake block 308 is radially movable and arranged on the inside of the inner fixing ring 312, and the shrink ring 309 is controlled by the brake block 308 extruding the outside of the shrink ring 309;

[0071] The fixed seat 301 is connected to the outside of the inner fixing ring 312 through the plate body on the inside, and the mounting member is connected to the bottom of the string cylinder body 2 through the connecting cable 6 on the outside of the fixed seat 301;

[0072] Further comprising: the rotary ring 302 is rotationally connected to the top of the inner cavity of the fixed seat 301, the plurality of brake blocks 308 are arranged on the inside of the rotary ring 302, and the brake blocks 308 correspond to the extrusion wedge blocks 305;

[0073] The extrusion wedge block 305 is arranged on the inside of the rotary ring 302, and the cross-sectional shape of the extrusion wedge block 305 is triangular;

[0074] The extrusion rod 306 is connected to the rear side of the brake block 308, and the extrusion rod 306 is slidingly connected to the sliding hole formed in the inner side of the inner fixed ring 312. The brake block 308 is extruded by the inner side contraction ring 309 through the extrusion of the extrusion wedge 305 to push the extrusion rod 306;

[0075] The first spring 307 is connected to the brake block 308 and the inner fixed ring 312 on one side of the corresponding position;

[0076] Further comprising: a plurality of control plates 303 arranged on the bottom of the rotary ring 302 along the axis of the rotary ring 302, and a plurality of limit teeth are connected to the inner side of the control plate 303;

[0077] The limit plate 304 is connected to the outside of the fixed seat 301 along the axis of the rotary ring 302, and the limit plate 304 has a plurality of tooth grooves corresponding to the limit teeth on the outside. The relative engagement of the control plate 303 and the limit plate 304 controls the rotation angle of the rotary ring 302, so as to control the extrusion stroke of the extrusion wedge 305 to the extrusion rod 306.

[0078] Specifically, by designing the aperture control mechanism 3, when pouring, the concrete can be delivered from the concrete pump truck to the top of the pouring groove 1, and then enter between the string barrel body 2 and the guide barrel 4. By the contraction of the taper of the guide barrel 4, the taper of the guide barrel 4 can adapt to the guiding needs of different grades of concrete, and the material segregation can be reduced;

[0079] Further, when the taper needs to be adjusted, the rotary ring 302 can be rotated in the fixed seat 301, the rotary ring 302 can drive the inner extrusion wedge 305 to press the extrusion rod 306, the extrusion rod 306 can move radially in the inner fixed ring 312, the extrusion rod 306 can drive the inner brake block 308 to move, the brake block 308 can extrude the contraction ring 309, so that the contraction ring 309 can be reduced to pull the tapered bottom end of the guide barrel 4 to adjust the aperture, and the guide barrel 4 can be adjusted by adjusting the aperture of the bottom of the guide barrel 4. The taper of the guide barrel 4 can be adjusted, and the brake block 308 can keep the equal contraction of the contraction ring 309, which is beneficial to improve the contraction stability, and the brake block 308 can keep the extrusion effect of the inner contraction ring 309 by the design of the brake block 308, and the front side of the brake block 308 is tapered;

[0080] By designing the first spring 307, when the brake block 308 moves, the outer first spring 307 can be pulled, and when the extrusion wedge 305 releases the extrusion of the extrusion rod 306, the first spring 307 can reset the brake block 308 by using the elastic force of the first spring 307, so that the guide barrel 4 can keep the expansion effect when the guide barrel 4 expands outward;

[0081] Through the designed connecting rope 6 and the fixing part, the string barrel body 2 can be connected with the bottom side fixing seat 301 through the connecting rope 6, so as to keep the connection tightness of the string barrel body 2 and the bottom side guide barrel 4, and keep the continuous hanging effect.

[0082] Further comprising: a contraction groove 310, which is arranged around the outer circumferential side of the contraction ring 309;

[0083] A tensioning rib 311, a plurality of tensioning ribs 311 are arranged longitudinally in the tensioning groove inner cavity arranged around the outer circumferential side of the contraction ring 309, the contraction tension of the contraction ring 309 is absorbed through the tensioning rib 311, and the lamp expansion of the contraction ring 309 is kept;

[0084] A tensioning groove 7, which is arranged around the outer circumferential side of the guide barrel 4, the guide barrel 4 is tapered adjusted through the external tensioning groove 7;

[0085] Specifically: through the designed contraction groove 310, the equidistant contraction of the contraction ring 309 can be kept through the designed contraction groove 310, and through the setting of the external tensioning groove 7 of the guide barrel 4, the control of the taper of the guide barrel 4 can be improved through the collapse of the external tensioning groove 7 of the guide barrel 4, and through the designed tensioning rib 311, the tension of the contraction ring 309 is absorbed by the tensioning rib 311 during the taper contraction of the guide barrel 4, the uniformity of the contraction process is kept, and local stress concentration leading to instability is avoided.

[0086] Further, through the designed guide barrel 4, when the concrete falls to the bottom end of the string barrel body 2, it enters the guide barrel 4 installed at the bottom of the string barrel, the guide barrel 4 is tapered in cross section and is made of flexible material, can produce certain deformation buffer under the impact of concrete, reduce the instantaneous impact force, the tapered structure of the guide barrel 4 further converges and guides the concrete flow, so that it keeps uniform and continuous falling state;

[0087] Please refer to Figures 8-9 The chain mechanism 5 comprises:

[0088] A lock rod 501, the two ends of the lock rod 501 are respectively connected with a universal ball 503 and a locking screw sleeve 504, a plurality of lock rods 501 are connected through adjacent universal balls 503 and locking screw sleeves 504;

[0089] A locking screw ring 505, which is threadedly connected outside the locking screw sleeve 504, a plurality of collapse grooves are arranged on the outer circumferential side of the locking screw sleeve 504;

[0090] Further comprising:

[0091] A telescopic rod 506, which is connected to the inner cavity bottom side of the locking screw sleeve 504;

[0092] The abutment seat 508 is connected to one end of the telescopic rod 506, and one side of the abutment seat 508 has an arc-shaped groove for buffering through abutting with the universal ball 503;

[0093] The second spring 507 is sleeved outside the telescopic rod 506, and two ends of the second spring 507 are respectively connected with the corresponding positions of one side of the inner cavity of the abutment seat 508 and the locking sleeve 504;

[0094] Further comprising: a plurality of inserts 510 are arranged on the inner cavity of the locking sleeve 504 around the axis of the locking sleeve 504;

[0095] The abutment block 511 is connected to the inner side of the locking sleeve 504 close to the opening;

[0096] The guide piece 502 has a wave-shaped cross section, and a plurality of guide pieces 502 are connected to the outside of the locking rod 501;

[0097] Through the design of the guide piece 502, when the concrete slurry enters the string barrel body 2 from top to bottom, the slurry interacts with the wave-shaped surface of the guide piece 502, forming multiple disturbance vortices in the flow field. The vortex effect can generate a local spiral guide flow field in the string barrel, so that the mortar part of the concrete is uniformly wrapped and carried during the falling process, reducing the segregation of aggregates and mortar due to the difference in gravity. And the guide piece 502 with a wave-shaped cross section can form a periodic pressure gradient, strengthen the circumferential distribution of the slurry around the locking rod 501, improve the uniformity of the overall flow field, and keep the mortar and aggregate evenly distributed during the falling process, thereby improving the overall density and homogeneity of the poured concrete. The spiral disturbance flow formed by the guide piece 502 in the string barrel body 2 can match the conical contraction guide of the bottom guide cylinder 4, so that the slurry enters the guide cylinder 4 in a stable and dispersed vortex flow state, thereby improving the control accuracy of the aperture control mechanism 3.

[0098] Specifically: through the design of the locking chain mechanism 5, multiple string barrel bodies 2 can be clamped into adjacent locking sleeves 504 through the universal ball 503, and through the rotation of the locking sleeve 504 outside the locking sleeve 504, the locking sleeve 504 can be fully locked with the locking sleeve 504. The locking rod 501 can be connected in series with each other, and the connection of the string barrel body 2 is completed through the series connection of the locking rod 501;

[0099] Meanwhile, through the design of the insert piece 510 and the limiting groove 509, when the universal ball 503 rotates in the locking sleeve 504, the insert piece 510 can keep the locking stability of the universal ball 503 through the coupling with the limiting groove 509, and the multiple abutting blocks 511 on the bottom side can keep the limiting stability of the universal ball 503, while the deflection angle of the universal ball 503 in the locking sleeve 504 can be adjusted to adapt to the adjustment and adaptation of the offset position of the multiple string barrel bodies 2 in the longitudinal direction, improving the casting adaptability.

[0100] Further, through the design of the telescopic rod 506 and the second spring 507, the telescopic rod 506 can keep the touch effect on the universal ball 503 through the front side fitting seat 508, keeping the prevention stability of the universal ball 503 in the locking sleeve 504.

[0101] Working principle: when in use, during the construction process, the concrete is delivered to the top of the pouring groove 1 via a pump truck or a chute, and first enters the first string barrel body 2 arranged below the pouring groove 1. The string barrel body 2 is a hollow cylindrical structure and can preliminarily limit and guide the concrete. The multiple string barrel bodies 2 are sequentially connected to form a vertical flow guide channel through the chain mechanism 5. The concrete falls along each string barrel body 2 under the action of gravity, realizing segmented slow descent delivery and avoiding large drop impact, and the continuity and adaptability of the overall unloading process.

[0102] When the unloading flow rate needs to be regulated or different grade concretes need to be adapted according to the design requirements before pouring, the worker pulls the rotating ring 302 during assembly, so that the rotating ring 302 rotates in the fixed seat 301. The rotating ring 302 drives the extrusion wedge 305 to push the extrusion rod 306, the extrusion rod 306 moves radially inward and drives the brake block 308 to compress the contraction ring 309. After the contraction ring 309 is contracted, the bottom tapered end of the guide cylinder 4 is tightened, thereby reducing the guide hole diameter. At this time, pouring is performed again to realize accurate adjustment of the taper and flow rate. When the external force is removed, the first spring 307 can pull the brake block 308 to reset, so that the contraction ring 309 relaxes, and the hole diameter of the bottom of the guide cylinder 4 is restored, ensuring the reversibility and stability of the taper adjustment.

[0103] Through the above flow guiding and regulation, the concrete is finally uniformly discharged from the bottom of the guide cylinder 4 and slowly descends to the target pouring position. Through step-by-step limiting, hole diameter adjustment and flexible guiding, the concrete falling speed and diffusion range are controlled, the coarse aggregate sinking and mortar separation are reduced, and the uniformity and density of the concrete on the pouring surface are ensured.

[0104] In the present application, the terms "first", "second" are only used for descriptive purposes and are not to be construed as indicating or implying relative importance. The term "multiple" refers to two or more, unless otherwise specifically limited. The terms "mounting", "connected", "connecting", "fixed", and the like should be interpreted broadly, for example, "connected" can be fixed connection, or detachable connection, or integrally connected; "connected" can be directly connected, or indirectly connected through an intermediate medium. 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.

[0105] The above description is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A detachable concrete pouring chute, comprising a pouring trough (1), wherein a plurality of chute bodies (2) are sequentially connected in series at the bottom of the pouring trough (1), characterized in that, Also includes: The guide tube (4) is connected to the bottom of the main body (2) of the string tube. The cross-sectional shape of the guide tube (4) is conical and the guide tube (4) is a flexible structure. Aperture control mechanism (3) is connected to the smaller diameter end of the bottom of the guide tube (4), and the guide taper of the guide tube (4) is controlled by the aperture control mechanism (3); Chain mechanism (5), multiple chain mechanisms (5) are respectively connected to the corresponding drum body (2), and the drum body (2) is connected by multiple chain mechanisms (5) in series.

2. The detachable concrete pouring duct according to claim 1, characterized in that, The aperture control mechanism (3) further includes: A shrink ring (309) is connected to the bottom end of the cone of the guide tube (4). The shrink ring (309) is configured to shrink circumferentially to pull the cone of the guide tube (4) to shrink and adjust the taper. The inner retaining ring (312) is coaxially sleeved outside the shrink ring (309); Braking blocks (308), multiple braking blocks (308) are arranged radially around the inner side of the inner solid ring (312), and the contraction of the contraction ring (309) is controlled by the braking blocks (308) squeezing the outside of the contraction ring (309); The fixing seat (301) is connected to the inner ring (312) through a plate on its inner side. Both sides of the outer periphery of the fixing seat (301) are connected to mounting parts. The top of the mounting parts is connected to the bottom of the main body (2) of the string tube through a connecting cable (6).

3. A detachable concrete pouring duct according to claim 2, characterized in that, The aperture control mechanism (3) further includes: A shrink ring (309) is connected to the bottom end of the cone of the guide tube (4). The shrink ring (309) is configured to shrink circumferentially to pull the cone of the guide tube (4) to shrink and adjust the taper. The inner retaining ring (312) is coaxially sleeved outside the shrink ring (309); Braking blocks (308), multiple braking blocks (308) are arranged radially around the inner side of the inner solid ring (312), and the contraction of the contraction ring (309) is controlled by the braking blocks (308) squeezing the outside of the contraction ring (309); The fixing seat (301) is connected to the inner ring (312) through a plate on its inner side. Both sides of the outer periphery of the fixing seat (301) are connected to mounting parts. The top of the mounting parts is connected to the bottom of the main body (2) of the string tube through a connecting cable (6).

4. A detachable concrete pouring duct according to claim 3, characterized in that, Also includes: Control board (303), multiple control boards (303) are arranged around the bottom of the rotating ring (302) along the axis of the rotating ring (302), and multiple limiting teeth are connected to the inner side of the control board (303); A limiting plate (304) is connected to the outside of the fixed seat (301) along the axis of the rotating ring (302). The limiting plate (304) has multiple tooth grooves corresponding to the limiting teeth. The rotation angle of the rotating ring (302) is controlled by the meshing of the control plate (303) and the limiting plate (304) to control the extrusion stroke of the extrusion wedge (305) on the extrusion rod (306).

5. A detachable concrete pouring duct according to claim 4, characterized in that, Also includes: Control board (303), multiple control boards (303) are arranged around the bottom of the rotating ring (302) along the axis of the rotating ring (302), and multiple limiting teeth are connected to the inner side of the control board (303); A limiting plate (304) is connected to the outside of the fixed seat (301) along the axis of the rotating ring (302). The limiting plate (304) has multiple tooth grooves corresponding to the limiting teeth. The rotation angle of the rotating ring (302) is controlled by the meshing of the control plate (303) and the limiting plate (304) to control the extrusion stroke of the extrusion wedge (305) on the extrusion rod (306).

6. A detachable concrete pouring duct according to claim 1, characterized in that, The chain mechanism (5) includes: Locking rod (501), with universal ball (503) and locking sleeve (504) connected to both ends of the locking rod (501) respectively, and multiple locking rods (501) are extended and connected through adjacent universal ball (503) and locking sleeve (504); A locking screw ring (505) is threaded to the outside of the locking screw sleeve (504), and the outer periphery of the locking screw sleeve (504) is provided with multiple collapse grooves.

7. A detachable concrete pouring duct according to claim 6, characterized in that, Also includes: The telescopic rod (506) is connected to the bottom side of the inner cavity of the locking nut (504); The fitting seat (508) is connected to one end of the telescopic rod (506). The fitting seat (508) has an arc-shaped groove on one side. The arc-shaped groove of the fitting seat (508) contacts the universal ball (503) for buffering. The second spring (507) is sleeved on the outside of the telescopic rod (506). The two ends of the second spring (507) are respectively connected to the corresponding positions of the inner cavity of the fitting seat (508) and the locking screw sleeve (504).

8. A detachable concrete pouring duct according to claim 7, characterized in that, Also includes: Insert (510), multiple inserts (510) are arranged around the axis of locking screw sleeve (504) on the periphery of the inner cavity of locking screw sleeve (504); Abutting blocks (511), a plurality of abutting blocks (511) are circumferentially connected to the inner side of the locking screw sleeve (504) near the opening; Guide plates (502), a plurality of the guide plates (502) are connected around the outside of the locking bar (501).

9. A detachable concrete pouring duct according to claim 8, characterized in that, The guide plate (502) has a wavy cross-section and forms a spiral guide area through multiple guide plates (502) to guide the concrete mortar to fall evenly.

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