Underwater concrete pouring device with exhaust function

Abstract

The invention belongs to the technical field of concrete pouring. The underwater concrete pouring device with the exhaust function comprises a guide pipe and a hopper arranged at the top of the guide pipe, an exhaust pipeline is arranged in the guide pipe in the length direction of the guide pipe, a plurality of exhaust holes are evenly formed in the exhaust pipeline in the length direction of the exhaust pipeline, and a drawing mechanism is arranged in the exhaust pipeline; the drawing mechanism comprises a drawing rope arranged in the length direction of the exhaust pipeline and a balance weight plumb bob arranged at the bottom of the drawing rope. The exhaust pipeline arranged in the guide pipe is matched with the drawing mechanism arranged in the exhaust pipeline, so that high-pressure gas in the guide pipe is exhausted, the problem of underwater concrete pouring failure caused by a high-pressure air bag in the guide pipe is solved, and the construction of an underwater concrete guide pipe pouring method is safer and more reliable and has quality guarantee.

Description

Technical Field

[0001] This invention belongs to the field of concrete pouring technology, specifically relating to an underwater concrete pouring device with an air venting function. Background Technology

[0002] Underwater concrete pouring is a common and widespread construction method. Many factors can cause pouring failures, but among them, high-pressure air pockets remain the most difficult to eradicate. Despite numerous preventative measures, such as adjusting concrete mix proportions, controlling pouring speed, and even improving the concrete hopper to ensure vertical entry into the pipe, high-pressure air pockets cannot be completely eliminated due to the many contributing factors. Once they occur, especially in large-diameter, ultra-long pile foundations, the consequences can be catastrophic.

[0003] Currently, the handling of high-pressure air pockets in underwater concrete duct pouring methods is primarily preventative, such as controlling the pouring speed. However, once a high-pressure air pocket is generated, such as... Figure 2 As shown, apart from trying their luck by lifting the guide pipe up and down and tapping it, there is no foolproof and effective solution. It is evident that the threat posed by high-pressure airbags to underwater concrete duct pouring has not been fundamentally resolved. Summary of the Invention

[0004] To address the problems existing in the background technology, the present invention provides an underwater concrete pouring device with an exhaust function. By cooperating with the built-in exhaust pipe and the pull-out mechanism inside the exhaust pipe, the high-pressure gas inside the duct is discharged, solving the problem of underwater concrete pouring failure caused by the high-pressure airbag inside the duct, making the construction of underwater concrete duct pouring method safer, more reliable, and with quality assurance.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An underwater concrete pouring device with venting function includes a guide pipe and a hopper disposed on its top. An venting pipe is disposed inside the guide pipe along its length. A plurality of venting holes are uniformly disposed on the venting pipe along its length. A pull-out mechanism is disposed inside the venting pipe.

[0007] The pull mechanism includes a pull rope arranged along the length of the exhaust pipe and a counterweight plumb bob located at the bottom of the pull rope.

[0008] Furthermore, the exhaust pipe is a galvanized steel pipe with an inner diameter of 25mm and a wall thickness of 3mm.

[0009] Furthermore, the diameter of the exhaust port is 5mm, and the distance between two adjacent exhaust ports is 20cm.

[0010] Furthermore, the exhaust pipe is detachably connected to the conduit via a connector.

[0011] Furthermore, the pull rope and the counterweight plumb bob are detachably connected by bolts.

[0012] Furthermore, the pull cord is a white-brown cord.

[0013] Furthermore, the pull rope is a steel strand.

[0014] Furthermore, a pull ring is provided at the top of the pull cord.

[0015] Furthermore, the pull rope is a steel wire rope.

[0016] Furthermore, a plurality of cleaning balls are evenly arranged along the length of the pull rope.

[0017] This application has the following beneficial effects:

[0018] This invention modifies existing conduits by adding a detachable exhaust pipe, which provides a reliable guarantee for cleaning the exhaust port. The exhaust method, which works in conjunction with the built-in pull-out mechanism, not only greatly improves the adaptability to poured concrete, but also reliably guarantees the discharge of high-pressure airbags.

[0019] In the underwater concrete pouring process of this invention, if a high-pressure air bladder appears, the duct can be lifted appropriately. If the gas cannot be discharged normally, the pull-out mechanism inside the exhaust pipe can be pulled to clear the exhaust hole and allow the high-pressure gas to be discharged smoothly. This effectively solves the problem of underwater concrete pouring failure caused by high-pressure air bladders in the duct, making the underwater concrete duct pouring method safer, more reliable, and with guaranteed quality. Attached Figure Description

[0020] The above and other objects, features, and advantages of exemplary embodiments of the present invention will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of the invention are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0021] Figure 1 This is a schematic diagram of the underwater concrete pouring device with venting function according to the present invention.

[0022] Figure 2 This is a schematic diagram of existing technology;

[0023] Figure 3 This is a longitudinal cross-sectional schematic diagram of the connection structure between the conduit and the exhaust pipe of the present invention;

[0024] Figure 4 This is a schematic cross-sectional view of the connection structure between the conduit and the exhaust pipe of the present invention;

[0025] Figure 5 This is a schematic diagram of the pull-out mechanism in Embodiment 1 of the present invention;

[0026] Figure 6 This is a schematic diagram of the pull-out mechanism in Embodiment 2 of the present invention;

[0027] Figure 7 This is a schematic diagram of the pull-out mechanism in Embodiment 3 of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Conduit; 2. Hopper; 3. Exhaust pipe; 4. High-pressure airbag; 5. Exhaust port; 6. End connector; 7. Node connector; 8. White hemp rope; 9. Counterweight plumb bob; 10. Steel strand; 11. Pull ring; 12. Steel wire rope; 13. Cleaning ball. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] This invention aims to solve the problem of venting high-pressure gas from the duct by setting an exhaust pipe inside the duct and cooperating with a pull-out mechanism inside the exhaust pipe. This fundamentally solves the quality accidents caused by high-pressure gas in the underwater concrete duct pouring process, and makes up for the problem of high-pressure gas in the duct that has been difficult to eradicate in the underwater concrete duct pouring method. This makes the construction of the underwater concrete duct pouring method more reliable and the quality more guaranteed.

[0032] After introducing the basic principles of the present invention, various non-limiting embodiments of the invention are described in detail below. Any number of elements in the accompanying drawings is for illustrative purposes only and not for limitation, and any naming is for distinction only and has no limiting meaning. The principles and spirit of the invention are explained in detail below with reference to several representative embodiments.

[0033] like Figure 1 As shown, an underwater concrete pouring device with venting function includes a conduit 1 and a hopper 2 installed at the top of the conduit 1. This part of the structure is similar to existing technologies (such as...). Figure 2 The same as shown, so I will not go into further detail here.

[0034] like Figure 1 As shown, the hopper 2 and the guide tube 1 are arranged vertically, with the bottom of the guide tube 1 inserted underwater. An exhaust pipe 3 is installed inside the guide tube 1 along its length, and a pull-out mechanism is installed inside the exhaust pipe 3.

[0035] like Figure 3 and Figure 4 As shown, several exhaust holes 5 are evenly distributed along the length of the exhaust pipe 3, with the exhaust holes 5 facing the center of the conduit 1. Specifically, the exhaust pipe 3 is made of galvanized steel pipe with an inner diameter of 25mm and a wall thickness of 3mm; the diameter of the exhaust holes 5 is 5mm, and the distance between two adjacent exhaust holes 5 is 20cm. The segment length of the exhaust pipe 3 is consistent with the length of a single section of the conduit 1, and each section of the exhaust pipe 3 is connected to the conduit 1 through two node connecting seats 7; the bottom of the exhaust pipe 3 is detachably connected to the inner wall of the conduit 1 through an end connecting seat 6; all connecting seats are fixed with bolts for easy disassembly.

[0036] The pull-out mechanism includes a pull-out rope installed inside the exhaust pipe 3 along its length and a counterweight 9 connected to the bottom of the pull-out rope. The pull-out rope and the counterweight 9 are detachably connected by bolts to ensure easy assembly and disassembly.

[0037] Example 1:

[0038] like Figure 5 As shown, the pull rope is a white-brown rope 8 with a diameter of 20mm. The counterweight plumb bob 9 has an outer diameter of 18mm and a length of 1.5m.

[0039] By pulling the white hemp rope 8 up and down, the vent hole 5 is prevented from being blocked by concrete slurry, thus ensuring that the vent hole 5 is unobstructed. At the same time, the white hemp rope 8 in the vent pipe 3 can reduce the leakage of slurry into the vent pipe 3 and minimize the backflow of water in the vent pipe 3 into the guide pipe 1, which could cause concrete segregation.

[0040] Given the inconsistent standards and varying quality of existing duct 1 on the market, each duct 1 should be rigorously inspected before installing an exhaust system to ensure the quality of the modification. Before modification, qualified duct 1 should be assembled and pressurized. After passing the pressure test, it should be numbered. Then, the longitudinal axis of the exhaust pipe 3 should be marked on each section of duct 1 to ensure that the longitudinal axis position of the exhaust pipe 3 is accurate after installation, so that the pull-out components inside the exhaust pipe 3 can work smoothly.

[0041] Underwater concrete pouring construction principle: During the underwater concrete pouring construction, the assembly of guide pipe 1 should be strictly carried out according to the guide pipe 1 number to ensure the accurate longitudinal axis position of the exhaust pipe 3. After the guide pipe 1 is assembled, the pull-out mechanism inside the exhaust pipe 3 is inserted into the exhaust pipe 3. During the concrete pouring process, if a high-pressure air bladder 4 appears, guide pipe 1 can be lifted appropriately (30-50cm). If the gas cannot be discharged normally, the pull-out mechanism inside the exhaust pipe 3 can be pulled appropriately to clear the exhaust hole 5 and allow the high-pressure gas to be discharged smoothly.

[0042] When removing the conduit 1, the pull-out mechanism inside the exhaust pipe 3 should be removed first. After the removal of the conduit 1 is completed, the pull-out mechanism should be put back into the exhaust pipe 3. At the same time, the exhaust pipe 3 inside the removed conduit 1 should be taken out, cleaned with high-pressure water, and then reinstalled to ensure normal use next time.

[0043] Example 2:

[0044] The core function of the pull-out mechanism is to reduce grout leakage into the vent pipe 3 and prevent blockage of the vent hole 5, ensuring the effective operation of the vent pipe 3. Simultaneously, the pull-out mechanism significantly reduces the amount of water remaining in the vent pipe 3, minimizing the segregation effect of water flowing back into the guide pipe 1. Based on these principles, the pull-out mechanism within the vent pipe 3 can be replaced by any other material that meets these functional requirements, and its length can be adjusted appropriately based on the hole depth. For example... Figure 6 As shown, the pull rope is a steel strand 10; a pull ring 11 is connected to the top of the steel strand 10.

[0045] Example 3:

[0046] Specifically, the leakage of grout from vent hole 5 can be controlled by adjusting its diameter / shape. Considering that the small amount of water in vent pipe 3 does not pose a threat to the concrete inside guide pipe 1, the following can be done: Figure 7 As shown, the white brown rope 8 of the pull-out mechanism is replaced with a steel wire rope 12 with a diameter of 8 mm. In order to ensure better unblocking of the vent hole 5 during the up and down pull-out, a cleaning ball 13 is connected to the steel wire rope 12 every 50 cm.

[0047] This invention, through the modification and addition of the existing conduit 1, and the installation of the detachable exhaust pipe 3, provides a reliable guarantee for the cleaning of the exhaust hole 5. The combined exhaust method of the exhaust pipe 3 and the built-in pull-out mechanism not only greatly improves the adaptability to poured concrete but also reliably ensures the discharge of the high-pressure airbag 4. Although the installation precision of the exhaust pipe 3 and the repeated installation and removal of the pull-out mechanism bring some inconvenience to construction, the benefits clearly outweigh the disadvantages compared to the huge economic losses caused by pile breakage due to the high-pressure airbag 4, making it well worth the effort.

[0048] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An underwater concrete pouring device with a venting function, comprising a guide pipe (1) and a hopper (2) arranged at the top of the guide pipe, characterized in that, An exhaust pipe (3) is provided inside the conduit (1) along its length direction. Several exhaust holes (5) are evenly provided on the exhaust pipe (3) along its length direction. A pull-out mechanism is provided inside the exhaust pipe (3). The pull mechanism includes a pull rope arranged along the length of the exhaust pipe (3) and a counterweight (9) at the bottom of the pull rope.

2. The underwater concrete pouring device with venting function according to claim 1, characterized in that, The exhaust pipe (3) is a galvanized steel pipe with an inner diameter of 25 mm and a wall thickness of 3 mm.

3. The underwater concrete pouring device with venting function according to claim 1 or 2, characterized in that, The diameter of the exhaust hole (5) is 5mm, and the distance between two adjacent exhaust holes (5) is 20cm.

4. The underwater concrete pouring device with venting function according to claim 1, characterized in that, The exhaust pipe (3) is detachably connected to the conduit (1) via a connecting seat.

5. The underwater concrete pouring device with venting function according to claim 1, characterized in that, The pull rope and the counterweight plumb bob (9) are detachably connected by bolts.

6. The underwater concrete pouring device with venting function according to claim 1, characterized in that, The pull cord is a white brown rope (8).

7. The underwater concrete pouring device with venting function according to claim 1, characterized in that, The pull rope is made of steel strand (10).

8. The underwater concrete pouring device with venting function according to claim 7, characterized in that, A pull ring (11) is provided at the top of the pull rope.

9. The underwater concrete pouring device with venting function according to claim 1, characterized in that, The pull rope is a steel wire rope (12).

10. The underwater concrete pouring device with venting function according to claim 9, characterized in that, Several cleaning balls (13) are evenly arranged along the length of the pull rope.

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