Pouring guide pipe for ultra-deep narrow post-cast strip of large concrete structure

Abstract

The utility model provides a large concrete structure ultra-deep narrow post-cast strip pouring guide pipe which comprises a pouring pipeline, the pouring pipeline comprises a pouring hopper, a plurality of descent control devices are arranged below the pouring hopper, a plurality of sections of standard section pipes are arranged between the descent control devices, and a plurality of movable tumbling barrels are arranged at the bottoms of the standard section pipes. The dismounting step of the pouring pipeline is completed on the surface of the foundation pit, constructors do not need to enter the deep and narrow foundation pit, the construction risk is effectively reduced, the pouring pipeline is more convenient to mount, dismount and adjust, the construction efficiency is greatly improved, and the construction cost is reduced. The problem that an ultra-long pouring pipeline in a deep narrow gap foundation pit is inconvenient to disassemble and assemble in the foundation pit is solved.

Description

Technical Field

[0001] This utility model relates to the field of deep and narrow foundation pits, and in particular to a casting guide pipe for ultra-deep and narrow post-cast strips in large concrete structures. Background Technology

[0002] In the field of cast-in-place construction of deep and narrow gap foundation pits, traditional pouring methods face many technical challenges. Due to the deep and narrow space of the foundation pit, extra-long pouring pipes are often required to reach the construction position when pouring concrete. The extra-long pouring pipes can cause segregation of concrete during the fall due to excessive height, which seriously affects the quality of concrete pouring. There is a lack of effective solutions to deal with these problems, and the requirements of high efficiency, safety and high quality for cast-in-place construction of deep and narrow gap foundation pits cannot be met.

[0003] Each time the cast-in-place height reaches the set height below the tremie pipe, it is necessary to lift the casting pipe and remove a portion of the standard pipe section. The disassembly and assembly of such ultra-long pipes inside the foundation pit is extremely inconvenient, requiring construction workers to descend into the deep and narrow gaps in the foundation pit to perform the operation. This is not only inefficient but also poses significant safety hazards. Utility Model Content

[0004] The main purpose of this utility model is to provide a casting guide pipe for ultra-deep and narrow post-cast strips in large concrete structures, which solves the problem that ultra-long casting pipes in deep and narrow gap foundation pits are inconvenient to disassemble and assemble inside the foundation pit.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a large concrete structure ultra-deep and narrow post-pouring strip pouring conduit, the pouring conduit includes a pouring pipe, the pouring pipe includes a pouring bucket, a plurality of decelerators are provided below the pouring bucket, a plurality of standard pipe sections are provided between the decelerators, and a plurality of movable tremie tubes are provided at the bottom of the standard pipe sections.

[0006] In the preferred embodiment, both ends of the standard pipe section and the decelerator are equipped with connecting flanges and lifting lugs, which facilitate hoisting and installation.

[0007] In the preferred embodiment, the decelerator is equipped with a spiral blade one and a spiral blade two inside.

[0008] In the preferred embodiment, spiral blade one and spiral blade two rotate in opposite directions. Spiral blade one and spiral blade two are used to slow down the falling speed of concrete to reduce concrete segregation.

[0009] In the preferred embodiment, a hopper support is provided below the casting hopper, and multiple hopper legs are provided below the hopper support for connecting to the vehicle panel.

[0010] In the preferred embodiment, the upper and lower sections of the spool are connected by a chain.

[0011] In the preferred embodiment, the casting hopper is funnel-shaped, narrow at the top and wide at the bottom, and the hopper support is arranged around the lower outer circle of the casting hopper.

[0012] This utility model provides a casting guide for ultra-deep and narrow post-cast strips in large concrete structures, which has the following beneficial effects:

[0013] 1. By elevating the dismantling of the pouring pipes to the surface of the foundation pit, construction personnel are not required to enter the deep and narrow foundation pit, effectively reducing construction risks;

[0014] 2. The use of a construction trolley with a lifting component makes the installation, dismantling, and adjustment of the pouring pipes more convenient, greatly improving construction efficiency. The setting of the decelerator effectively slows down the falling speed of concrete, reduces segregation, ensures the quality of concrete pouring, and improves construction efficiency. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic cross-sectional view of the deep and narrow foundation pit of this utility model;

[0017] Figure 2 This is a schematic diagram of the layout of the construction device of this utility model;

[0018] Figure 3 This is an isometric view of the construction device of this utility model;

[0019] Figure 4 This is an axonometric view of the construction trolley of this utility model;

[0020] Figure 5 This is a schematic diagram of the construction trolley hoisting the first standard pipe section of this utility model;

[0021] Figure 6 This is a schematic diagram of the limit position of the first standard pipe section when the construction trolley is hoisted according to this utility model;

[0022] Figure 7 This is a schematic diagram of the standard pipe section splicing of the construction trolley of this utility model;

[0023] Figure 8 This is a schematic diagram of the construction trolley splicing decelerator of this utility model;

[0024] Figure 9 This is a schematic diagram of the construction trolley splicing pouring bucket of this utility model;

[0025] Figure 10 This is a top view schematic diagram of the construction trolley hoisting and pouring bucket of this utility model;

[0026] Figure 11 This is a cross-sectional schematic diagram of the lifting component of this utility model;

[0027] Figure 12 This is a schematic diagram of the disassembly of the standard pipe section of the construction trolley of this utility model;

[0028] Figure 13 This is a cross-sectional schematic diagram of the descent device of this utility model;

[0029] Figure 14 This is an isometric view of the string tube of this utility model.

[0030] In the diagram: 1. Deep and narrow foundation pit; 2. Construction trolley; 201. Guide rail; 202. Limiting seat; 202. Frame; 203. Panel; 204. Buffer; 205. Limiting assembly; 2501. Guide seat; 2502. Telescopic cylinder; 2503. Telescopic rod; 2504. Limiting top frame; 206. Lifting assembly; 2601. Nut mounting seat; 2602. Lead screw nut seat; 2603. Trapezoidal lead screw; 2604. Lifting motor; 2605. Bevel gear one; 2606. Bevel gear two; 207. Winching assembly; 2701. Lifting top plate; 27. Support frame. 02; Guide wheel assembly 1 2703; Guide wheel assembly 2 2704; Winch 2705; Steel cable 2706; Guide hole 208; Drive wheel groove 209; Roller frame 210; Drive wheel 211; Travel motor 212; Reducer 213; Chain 214; Driven wheel groove 215; Driven wheel 216; Casting pipe 3; Standard section pipe 301; Connecting flange 302; Lifting lug 303; Decelerator 4; Spiral blade 1 401; Spiral blade 2 402; Stringer 5; Casting hopper 6; Hopper support 601; Hopper support leg 602. Detailed Implementation

[0031] Example 1

[0032] like Figure 1-14 As shown, a large concrete structure ultra-deep and narrow post-pouring strip pouring conduit is provided. The pouring conduit includes a pouring pipe 3, the pouring pipe 3 includes a pouring bucket 6, a plurality of decelerators 4 are provided below the pouring bucket 6, a plurality of standard pipe sections 301 are provided between the decelerators 4, and a plurality of movable cisterns 5 are provided at the bottom of the standard pipe sections 301.

[0033] In the preferred embodiment, both ends of the standard section pipe 301 and the decelerator 4 are provided with connecting flanges 302 and lifting lugs 303, and the lifting lugs 303 facilitate hoisting and installation.

[0034] In the preferred embodiment, the decelerator 4 is provided with a spiral blade 401 and a spiral blade 402 inside.

[0035] In the preferred embodiment, spiral blade 401 and spiral blade 402 rotate in opposite directions. Spiral blade 401 and spiral blade 402 are used to slow down the falling speed of concrete to reduce concrete segregation.

[0036] In the preferred embodiment, a hopper support 601 is provided below the casting hopper 6, and multiple hopper legs 602 are provided below the hopper support 601. The hopper legs 602 are used to connect with the vehicle panel 203.

[0037] In the preferred embodiment, the upper and lower parts of the string tube 5 are connected by a chain.

[0038] In the preferred embodiment, the casting hopper 6 is funnel-shaped, narrow at the top and wide at the bottom, and the hopper support 601 is arranged around the lower outer circle of the casting hopper 6.

[0039] Example 2

[0040] Further explanation in conjunction with Example 1, such as Figure 1-14 The structure shown is a construction device for ultra-deep and narrow post-pouring strips of large concrete structures, including a construction trolley 2, with a through guide hole 208 in the middle of the construction trolley 2, and a detachable pouring pipe 3 in the guide hole 208.

[0041] Lifting components 206 are symmetrically provided on both sides of the guide hole 208, and limiting components 205 are also provided around the outer circle of the guide hole 208. A hoisting component 207 is provided on the top of the lifting components 206.

[0042] The construction trolley 2 is equipped with guide rails 201 below it, which are arranged on both sides of the top of the deep and narrow foundation pit.

[0043] In the preferred embodiment, the pouring pipe 3 includes a pouring hopper 6, with multiple decelerators 4 below the pouring hopper 6, multiple standard pipe sections 301 between the decelerators 4, and multiple movable cisterns 5 at the bottom of the standard pipe sections 301.

[0044] In the preferred embodiment, the construction trolley 2 includes a frame 202, a panel 203 is provided on the top of the frame 202, a plurality of drive wheel grooves 209 are provided on one side of the panel 203, a driven wheel groove 215 is provided on the other side, and a roller frame 210 is provided on one side of the drive wheel grooves 209 and the driven wheel grooves 215.

[0045] A drive wheel 211 is provided on the roller frame 210 on the side of the drive wheel groove 209, and a driven wheel 216 is provided on the roller frame 210 on the side of the driven wheel groove 215.

[0046] In the preferred embodiment, a travel motor 212 is provided above the drive wheel groove 209, a reducer 213 is provided at the output end of the travel motor 212, a sprocket is provided on one side of the drive wheel 211, and a chain 214 is provided between the output shaft end of the reducer 213 and the sprocket of the drive wheel 211. The travel motor 212 is used to drive the drive wheel 211 to travel on the guide rail 201.

[0047] Multiple buffers 204 are provided on both sides of the frame 202, and limit seats 202 are provided at both ends of the guide rail 201. The buffers 204 are used to collide with the limit seats 202.

[0048] In the preferred embodiment, the limiting component 205 includes a guide seat 2501, a telescopic cylinder 2502 is provided on one side of the guide seat 2501, and a telescopic rod 2503 is provided at the output shaft end of the telescopic cylinder 2502. The telescopic rod 2503 passes through the guide seat 2501 and is movably connected to the guide seat 2501.

[0049] The top of the telescopic rod 2503 is provided with a limiting top frame 2504, which is used to temporarily limit the height position of the pouring pipe 3.

[0050] In a preferred embodiment, the lifting assembly 206 includes multiple nut mounting seats 2601. The nut mounting seat 2601 has a rotatable lead screw nut seat 2602 inside. The lead screw nut seat 2602 has a liftable trapezoidal lead screw 2603 inside. The bottom of the lead screw nut seat 2602 has a bevel gear 2606. A lifting motor 2604 is provided on one side of the bevel gear 2606.

[0051] In the preferred embodiment, the output shaft end of the lifting motor 2604 is provided with a bevel gear 2605, which is arranged perpendicularly to the bevel gear 2606. The lifting motor 2604 is used to drive the lead screw nut seat 2602 to rotate, and the lead screw nut seat 2602 is used to drive the trapezoidal lead screw 2603 to rise and fall. The lifting motor 2604 is equipped with an encoder inside, which is used to coordinate the speed synchronization between multiple lifting motors 2604.

[0052] In the preferred embodiment, the hoisting assembly 207 includes a lifting top plate 2701, which is arranged on the top between adjacent lifting assemblies 206. The lifting top plate 2701 is equipped with multiple winches 2705. One side of the winches 2705 is provided with a second set of guide wheels 2704 and a first set of guide wheels 2703 in sequence. The lifting top plate 2701 is also provided with a support frame 2702 on the inward side, and the support frame 2702 is equipped with rollers.

[0053] The winch 2705 has a steel cable 2706 on its roller. The steel cable 2706 passes through the second guide wheel group 2704, the first guide wheel group 2703 and the support frame 2702 in sequence. The end of the steel cable 2706 is equipped with a hook. The steel cable 2706 is used to connect to the pouring pipe 3. The winch 2705 is equipped with an encoder.

[0054] In the preferred embodiment, both ends of the standard section pipe 301 and the decelerator 4 are provided with connecting flanges 302 and lifting lugs 303;

[0055] The decelerator 4 is equipped with a spiral blade 401 and a spiral blade 402 inside. The spiral blade 401 and the spiral blade 402 rotate in opposite directions. The spiral blade 401 and the spiral blade 402 are used to slow down the falling speed of the concrete to reduce the segregation of the concrete.

[0056] Below the casting hopper 6 is a hopper support 601, and below the hopper support 601 are multiple hopper legs 602, which are used to connect to the vehicle panel 203.

[0057] The construction method applied to the above-mentioned construction device for ultra-deep and narrow post-cast strips in large concrete structures includes:

[0058] S1. Place the guide rail 201 on both sides of the top of the deep and narrow foundation pit 1, place the construction trolley 2 on the guide rail 201, and move the construction trolley 2 above the pouring position.

[0059] S2. Lower the lifting assembly 206 to its lowest position, start the winch 2705 to release the steel cable 2706, and then connect the hook at the front end of the steel cable 2706 to the lifting lug 303 on the standard section pipe 301.

[0060] S3. Raise the lifting assembly 206, slowly pull back the steel cable 2706, hoist the standard section pipe 301 above the guide hole 208, and after the hoisting is stable, install the duct 5 below the standard section pipe 301.

[0061] After the installation of S4 and the cassette 5 is completed, the lifting assembly 206 is gradually lowered so that the connecting flange 302 at the bottom of the standard section tube 301 passes through the guide hole 208. Then, the telescopic cylinder 2502 is activated so that the limiting top frame 2504 extends into the standard section tube 301.

[0062] S5. Place the connecting flange 302 at the top of the standard section pipe 301 above the limiting top frame 2504. After it is placed stably, loosen the steel cable 2706 and hoist the next standard section pipe 301 above the previous standard section pipe 301 and connect it with bolts.

[0063] S6. During the installation of standard pipe section 301, a decelerator 4 is installed between the designed sections. After the standard pipe section 301 and the decelerator 4 are installed, the pouring bucket 6 is hoisted and installed above the top standard pipe section 301. After the pouring bucket 6 is installed, the bucket support leg 602 is connected to the construction trolley 2 by bolts.

[0064] S7. When the bottom cast-in-place concrete is close to the bottom of the pipe 5, start the lifting component 206 to hoist and lift a standard section of pipe 3 of the cast pipe 3, and the limiting component 205 extends the limiting top frame 2504 to restrict the top connecting flange 302 of the next standard section of pipe 3.

[0065] S8. After the limiting component 205 is fixed, the standard section pipe 3 that has been raised is removed. After the removal is completed, the lifting component 206 lowers the pouring bucket 6 to the top of the next standard section pipe 3 and connects it with bolts.

[0066] After the first segment of the deep and narrow foundation pit 1 is poured, the construction trolley 2 is moved laterally to the next segment for pouring. Steps S2-S8 are repeated until the deep and narrow foundation pit 1 is completely poured.

[0067] Example 3, further explained according to Example 2, a deep and narrow foundation pit pouring construction device is implemented as follows: First, based on the size of the deep and narrow foundation pit 1 and the pouring requirements, guide rails 201 are arranged on both sides of the top of the deep and narrow foundation pit 1 to ensure that the guide rails 201 are installed firmly and the parallelism meets the requirements. The guide rails 201 serve as the running track of the construction trolley 2, and their installation quality directly affects the stability and safety of subsequent construction.

[0068] Next, the construction trolley 2 is placed on the guide rail 201. The construction trolley 2 includes a frame 202. One side of the panel 203 above the frame 202 has a drive wheel groove 209, and the other side has a driven wheel groove 215. A drive wheel 211 is installed on the roller frame 210 on the side of the drive wheel groove 209, and a driven wheel 216 is installed on the roller frame 210 on the side of the driven wheel groove 215. The travel motor 212 above the drive wheel groove 209 drives the drive wheel 211 to move on the guide rail 201 through a reducer 213 and a chain 214, thereby moving the construction trolley 2. The travel motor 212 is started to move the construction trolley 2 above the pouring position.

[0069] After the construction trolley 2 is in place, the assembly of the pouring pipe 3 is prepared. The pouring pipe 3 consists of a pouring bucket 6, multiple decelerators 4, multiple standard pipe sections 301, and multiple movable cisterns 5. The lifting assembly 206 is lowered to its lowest point. The lifting assembly 206 includes multiple nut mounting seats 2601. The internal screw nut seat 2602 can rotate under the drive of the lifting motor 2604, thereby driving the trapezoidal screw 2603 to rise and fall.

[0070] Start the winch 2705 to release the steel cable 2706. The winch 2705 is installed on the lifting top plate 2701. The steel cable 2706 passes through the second guide wheel group 2704, the first guide wheel group 2703 and the bearing frame 2702 in sequence. Connect the hook at the front end of the steel cable 2706 to the lifting lug 303 on the standard section pipe 301. Both the standard section pipe 301 and the decelerator 4 are equipped with connecting flanges 302 and lifting lugs 303 at both ends to facilitate hoisting and connection.

[0071] Raise the lifting assembly 206 and slowly pull back the steel cable 2706. Use the winch assembly 207 to hoist the standard pipe section 301 above the guide hole 208. After the standard pipe section 301 is hoisted and stabilized, install the tremie pipe 5 at its bottom. The tremie pipe 5 can be extended and retracted according to the actual pouring requirements.

[0072] Subsequently, the lifting assembly 206 is gradually lowered so that the connecting flange 302 at the bottom of the standard section tube 301 passes through the guide hole 208, and the telescopic cylinder 2502 in the limiting assembly 205 is activated. The telescopic cylinder 2502 pushes the telescopic rod 2503 through the guide seat 2501, so that the limiting top frame 2504 extends towards the standard section tube 301.

[0073] Place the connecting flange 302 at the top of the standard section pipe 301 above the limiting top frame 2504. After it is placed stably, loosen the steel cable 2706 and hoist the next standard section pipe 301 above the previous standard section pipe 301. Tightly connect the connecting flanges 302 of the two standard section pipes 301 with bolts.

[0074] During the installation of standard pipe section 301, decelerators 4 are installed between sections according to design requirements. The spiral blades 401 and 402 inside the decelerator 4 rotate in opposite directions, effectively slowing the concrete's descent speed, reducing segregation, and ensuring the quality of the concrete pouring. The above steps are repeated until all standard pipe sections 301 and decelerators 4 are installed.

[0075] The pouring hopper 6 is hoisted and installed above the top standard section pipe 301. Below the pouring hopper 6, there is a hopper support 601 and multiple hopper legs 602. After the pouring hopper 6 is installed, the hopper legs 602 are connected to the vehicle panel 203 of the construction trolley 2 with bolts to ensure that the pouring hopper 6 is installed securely. At this point, the pouring pipe 3 is installed.

[0076] Concrete is transported to the pouring hopper 6 via a transport device. Under gravity, the concrete falls into the deep and narrow foundation pit 1 through the decelerator 4, standard pipe section 301, and tremie pipe 5. During the pouring process, the height of the bottom cast-in-place concrete is closely monitored. When the bottom cast-in-place concrete approaches the bottom of the tremie pipe 5, the lifting assembly 206 is activated to hoist the pouring pipe 3 to the height of a standard pipe section 3. At this time, the limiting assembly 205 extends the limiting top frame 2504 again to restrict the top connecting flange 302 of the next standard pipe section 3, keeping it stable.

[0077] After the limiting component 205 is fixed, remove the standard pipe section 3 that has been raised at one end. During removal, pay attention to the operating procedures to ensure construction safety.

[0078] After dismantling is completed, the lifting assembly 206 lowers the pouring bucket 6 to the top of the next standard pipe section 3, and reconnects the connecting flange 302 of the two with bolts to continue the concrete pouring operation.

[0079] After one segment of the deep and narrow foundation pit 1 is poured, the travel motor 212 of the construction trolley 2 is started, causing the construction trolley 2 to move laterally to the position above the next segment's pouring location. After reaching the designated position, the above steps S2-S8 are repeated, that is, the adjustment of the pouring pipe 3, the installation and removal of the standard pipe section 301, and the concrete pouring are carried out again until the deep and narrow foundation pit 1 is completely poured.

[0080] Throughout the construction process, the components work together. For example, the lifting component 206 and the hoisting component 207 work together to lift and hoist the pouring pipe 3, and the limiting component 205 ensures the stability of the pouring pipe 3, thereby achieving efficient and high-quality pouring construction of the deep and narrow foundation pit 1.

[0081] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A casting pipe for ultra-deep and narrow post-cast strips in large concrete structures, characterized in that: The pouring conduit includes a pouring pipe (3), the pouring pipe (3) includes a pouring bucket (6), a number of decelerators (4) are provided below the pouring bucket (6), a number of standard pipe sections (301) are provided between the decelerators (4), and a number of movable cisterns (5) are provided at the bottom of the standard pipe sections (301).

2. The large concrete structure ultra-deep narrow post-cast strip pouring guide pipe according to claim 1, characterized in that: Both ends of the standard pipe section (301) and the decelerator (4) are equipped with connecting flanges (302) and lifting lugs (303), which facilitate hoisting and installation.

3. The large concrete structure ultra-deep narrow post-cast strip pouring guide pipe according to claim 1, characterized in that: The interior of the decelerator (4) is provided with a spiral blade one (401) and a spiral blade two (402).

4. The large concrete structure super deep narrow post-cast strip pouring guide pipe according to claim 3, characterized in that: Spiral blade one (401) and spiral blade two (402) rotate in opposite directions. Spiral blade one (401) and spiral blade two (402) are used to slow down the falling speed of concrete to reduce concrete segregation.

5. The large concrete structure ultra-deep narrow post-cast strip pouring guide pipe according to claim 1, characterized in that: A hopper support (601) is provided below the casting hopper (6), and multiple hopper legs (602) are provided below the hopper support (601). The hopper legs (602) are used to connect with the vehicle panel (203).

6. The large concrete structure ultra-deep narrow post-cast strip pouring guide pipe according to claim 1, characterized in that: The upper and lower parts of the spool (5) are connected by a chain.

7. The large concrete structure super deep narrow post-cast strip pouring guide pipe according to claim 5, characterized in that: The casting hopper (6) is a funnel shape that is narrow at the top and wide at the bottom, and the hopper support (601) is arranged around the lower outer circle of the casting hopper (6).

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