Magnetic connection cast-in-place pile structure

Abstract

The utility model relates to a magnetically-connected cast-in-place pile structure. Comprising a pouring pipe, the tail end of the pouring pipe is provided with a concrete pouring port, and the bottom of the pouring pipe is provided with a concrete discharging port; the rear end face of the plunger is vertically provided with a connecting column inserted into the infusion tube, an iron core is embedded in the connecting column, and the connecting column is connected to the inner wall of the front end of the infusion tube through a magnetic mechanism; the magnetic mechanism comprises a magnetic sleeve connected to the outer wall of the connecting column in a sleeving mode, a magnetic block is embedded in the magnetic sleeve, the magnetic sleeve fixes the connecting column through magnetic force of the magnetic block, and the outer portion of the magnetic sleeve is in sliding sealing contact with the inner wall of the infusion tube; the upper part of the magnetic sleeve is connected with a traction cable, and the traction cable penetrates through the perfusion tube and extends to the perfusion port; the set of plungers which can be dynamically separated and are made of concrete materials are connected to the front end of the pouring pipe through the magnetic mechanism, and compared with a rubber plug structure, the concrete plungers are high in hardness, can penetrate into a water bottom base layer and are not prone to falling off.

Description

Technical Field

[0001] The utility model relates to a magnetically connected cast-in-place pile structure, belonging to the field of cast-in-place pile technology. Background Art

[0002] At present, underwater bored piles mainly use the conduit method. During construction, in order to prevent water flow and debris from entering the conduit, the bottom end of the pipe can be plugged before lowering the pipe. The plug can be flushed open by the weight of the first tank of concrete so that the concrete can be poured into place. During deep water operations, the pipe must be prevented from floating. When lowering the pipe, the pipe can be filled with water, and a rubber ball close to the pipe wall can be installed on the top of the pipe. Then concrete is poured in and the ball is pressed out along the pipe, and pouring can be carried out. However, this method will cause the rubber ball to be squeezed into the concrete pile, affecting the quality of the entire concrete pile. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the technical problems in the prior art and provide a magnetically connected cast-in-place pile structure.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A magnetically connected cast-in-place pile structure; comprising:

[0006] A pouring pipe, wherein a concrete pouring port is arranged at the end of the pouring pipe and a concrete discharge port is arranged at the bottom of the pouring pipe;

[0007] A plunger, a connecting column inserted into the perfusion tube is vertically arranged on the rear end surface of the plunger, an iron core is embedded in the connecting column, and the connecting column is connected to the inner wall of the front end of the perfusion tube through a magnetic mechanism;

[0008] The magnetic mechanism includes a magnetic sleeve sleeved on the outer wall of the connecting column, a magnetic block is embedded in the magnetic sleeve, the magnetic sleeve fixes the connecting column through the magnetic force of the magnetic block, and the outer part of the magnetic sleeve is in sliding and sealing contact with the inner wall of the perfusion tube;

[0009] Wherein, a traction cable is connected to the upper part of the magnetic sleeve, and the traction cable passes through the perfusion tube and extends to the perfusion port.

[0010] As a further improvement of the utility model, the magnetic sleeve includes a sliding sleeve and a connecting sleeve; the outer wall of the sliding sleeve is in sliding and sealing contact with the inner wall of the perfusion tube, a magnetic block is embedded in the inner wall of the sliding sleeve, and a traction cable is connected to the top of the sliding sleeve; the connecting sleeve is fixed to the inner wall of the sliding sleeve, the connecting sleeve is made of rubber, and the connecting column is embedded in the connecting sleeve.

[0011] As a further improvement of the utility model, a first flange ring and a second flange ring are respectively provided at the top of the sliding sleeve and the top of the connecting sleeve, the first flange ring and the second flange ring are fixedly connected by bolts, and a third flange ring is also provided on the inner ring of the first flange ring of the sliding sleeve, and the end of the traction cable is fixed to the third flange ring by bolts.

[0012] As a further improvement of the utility model, a filling interval is provided between the end surface of the magnetic sleeve and the end surface of the perfusion tube, the rear end surface of the plunger is in sealing contact with the end surface of the perfusion tube, and the filling interval is filled with foaming material.

[0013] As a further improvement of the present invention, the traction cables include at least three groups, and at least two groups of guide plates are arranged in an array on the traction cables. A fourth flange ring is provided in the middle of the guide plate, and each traction cable is connected to the guide plate through the fourth flange ring.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model uses a magnetic mechanism to connect a group of concrete plungers that can be dynamically separated at the front end of the perfusion pipe. Compared with the rubber plug structure, the concrete plunger has a greater hardness and can not only penetrate the underwater base layer but also is not prone to falling off. It can also fall off stably when needed, effectively improving the quality of construction.

[0016] 2. The magnetic sleeve uses a two-set separation structure. The internal rubber connecting sleeve can enhance the grip on the front plunger, while the external sliding sleeve can ensure the sealing effect and resist the wear of sliding in the catheter, which has a longer service life.

[0017] 3. The sliding sleeve and the connecting sleeve are fixed by flanges, so that the two structures can be disassembled and maintained. The traction cables are also connected by flanges. The circular array arrangement can make the traction force more evenly applied.

[0018] 4. The filling area can be filled with foam materials to improve the sealing effect and bonding strength, further improving the quality of construction.

[0019] 5. The guide ring can ensure the consistency of the lifting position of each cable when it is pulled, and ensure the uniform traction force of each cable on the magnetic mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0022] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0023] In the figure: 1. injection pipe; 1-1. pipe section; 1-2. injection port; 1-3. discharge port; 2. traction cable; 3. plunger; 4. built-in magnet; 5. steel structure; 6. sliding sleeve; 6-1. third flange ring; 7. connecting sleeve; 7-1. second flange ring; 8. magnetic block; 9. aluminum ring; 10. traction cable; 11. guide plate. DETAILED DESCRIPTION

[0024] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0025] like Figure 1 As shown, the utility model is a magnetically connected cast-in-place pile structure; it is mainly used for pouring concrete slurry when using the catheter method for underwater construction; it includes a pouring pipe composed of a plurality of pipe sections combined by a flange structure, a pouring port with a gradually expanding structure is fixed on the top of the pouring pipe, and the bottom of the pouring pipe is a discharge port for the concrete slurry.

[0026] During construction, in order to allow the entire conduit to sink stably underwater, the entire conduit needs to be sealed and filled with concrete slurry inside to increase its own weight; in this embodiment, a plunger made of concrete is connected to the discharge port of the conduit through a magnetic mechanism, and the front end of the plunger is used to be inserted into the pouring position; a steel structure is arranged inside the plunger, and a magnetic steel is prefabricated through the steel structure, and the magnetic steel is used to realize the connection between the plunger and the magnetic mechanism.

[0027] like Figure 1 and Figure 2 , wherein a connecting column is arranged at the rear end of the plunger, and the magnetic steel is embedded in the connecting column; the magnetic mechanism comprises a sliding sleeve which is in sliding and sealing contact with the inner wall of the perfusion tube, the sliding sleeve is made of cast iron or plastic, and a plurality of aluminum rings are embedded on the outer wall of the sliding sleeve, the aluminum rings can not only realize sliding sealing with the inner wall of the perfusion tube made of cast iron, but also clean the inner wall of the perfusion tube; a plurality of magnetic blocks corresponding to the built-in magnetic steel are embedded on the inner wall of the sliding sleeve; an annular first flange ring is arranged on the top of the sliding sleeve, a connecting sleeve is coaxially fixed inside the sliding sleeve through the first flange ring, a second flange ring is arranged on the top of the connecting sleeve, and the combined connection of the connecting sleeve and the sliding sleeve is realized through the combination of the first flange ring and the second flange ring, an annular limiting ring is arranged on the outer side wall of the bottom of the connecting sleeve, the limiting ring is in sealing contact with the end face of the sliding sleeve, and the connecting sleeve is made of rubber material;

[0028] like Figure 1A third flange ring is also arranged on the inner ring of the first flange ring of the sliding sleeve, and a plurality of traction cables are connected to the upper part of the entire magnetic mechanism through the third flange ring. The traction cables can realize the upward movement of the entire magnetic mechanism along the perfusion tube by connecting the winch.

[0029] like Figure 1 and Figure 2 During construction, first insert the connecting column of the plunger into the connecting sleeve of the magnetic mechanism, and pull the traction cable out of the discharge port, then insert the entire magnetic mechanism together with the upper half of the plunger into the injection tube until the conical bottom surface of the front end of the plunger contacts the end surface of the injection tube. Before complete contact, a part of foaming material can also be filled between the front end of the magnetic mechanism and the conical bottom surface of the plunger. As the foaming material expands, the outer surface of the connecting column part and the inner wall of the injection tube can be sealed. At the same time, before the traction cable is inserted into the perfusion tube, a guide sheet can be arrayed and fixed on the traction cable. The guide sheet is used to be vertically aligned with the inner wall surface of the perfusion tube. Direct contact can synchronize the moving distance of each traction cable when moving; when the whole pouring pipe is filled with concrete or water, it will sink into the water and prepare for pouring. Before the pouring starts, if water is used as counterweight, the counterweight water in the pouring pipe can be drained by a water pump. At the beginning of pouring, the traction cable is pulled by the cable winch to separate the connecting column and the connecting sleeve. The connecting column naturally falls from the front end of the pouring pipe, and the whole magnetic mechanism is pulled out from the discharge port through the traction cable. After that, the pouring pipe is moved vertically upward while filling with concrete to complete the whole pouring process.

[0030] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A magnetically connected cast-in-place pile structure; characterized in that: include: A pouring pipe, wherein a concrete pouring port is arranged at the end of the pouring pipe and a concrete discharge port is arranged at the bottom of the pouring pipe; A plunger, a connecting column inserted into the perfusion tube is vertically arranged on the rear end surface of the plunger, an iron core is embedded in the connecting column, and the connecting column is connected to the inner wall of the front end of the perfusion tube through a magnetic mechanism; The magnetic mechanism includes a magnetic sleeve sleeved on the outer wall of the connecting column, a magnetic block is embedded in the magnetic sleeve, the magnetic sleeve fixes the connecting column through the magnetic force of the magnetic block, and the outer part of the magnetic sleeve is in sliding and sealing contact with the inner wall of the perfusion tube; Wherein, a traction cable is connected to the upper part of the magnetic sleeve, and the traction cable passes through the perfusion tube and extends to the perfusion port.

2. A magnetically connected cast-in-place pile structure as claimed in claim 1, characterized in that: The magnetic sleeve includes a sliding sleeve and a connecting sleeve; the outer wall of the sliding sleeve is in sliding and sealing contact with the inner wall of the perfusion tube, a magnetic block is embedded in the inner wall of the sliding sleeve, and a traction cable is connected to the top of the sliding sleeve; the connecting sleeve is fixed to the inner wall of the sliding sleeve, the connecting sleeve is made of rubber, and the connecting column is embedded in the connecting sleeve.

3. A magnetically connected cast-in-place pile structure as claimed in claim 1, characterized in that: A first flange ring and a second flange ring are respectively provided at the top of the sliding sleeve and the top of the connecting sleeve. The first flange ring and the second flange ring are fixedly connected by bolts. A third flange ring is also provided on the inner ring of the first flange ring of the sliding sleeve, and the end of the traction cable is fixed to the third flange ring by bolts.

4. A magnetically connected cast-in-place pile structure as claimed in claim 1, characterized in that: A filling interval is arranged between the end surface of the magnetic sleeve and the end surface of the perfusion tube, the rear end surface of the plunger is in sealing contact with the end surface of the perfusion tube, and the filling interval is filled with foaming material.

5. A magnetically connected cast-in-place pile structure as claimed in claim 1, characterized in that: The traction cables include at least three groups, and at least two groups of guide plates are arranged in an array on the traction cables. A fourth flange ring is provided in the middle of the guide plate, and each traction cable is connected to the guide plate via the fourth flange ring.

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