A kind of anti-deviation formula top iron suitable for JCCP pipe jacking

Abstract

The utility model provides a kind of anti-deviation formula top iron suitable for JCCP pipe jacking, including top iron body, and the side of top iron body is provided with the positioning structure for fixing JCCP pipe jacking, and the inside of top iron body is equipped with the electromagnetic system that JCCP pipe jacking is attached, and the corresponding end face of JCCP pipe jacking is embedded with the metal plate that can be magnetically attracted.The utility model provides a kind of electromagnetic adsorption+positioning correction collaborative structure to replace traditional mechanical locking+manual correction deviation, and the connection speed is improved by 80%, and only needs to be de-energized when releasing adsorption, to avoid hydraulic tool operation risk.

Description

Technical Field

[0001] This utility model relates to the field of pipe jacking construction technology, specifically to an anti-deviation jacking iron suitable for JCCP pipe jacking. Background Technology

[0002] During pipe jacking construction, the jacking iron, as a force transmission component, needs to be frequently hoisted and connected to the pipe material.

[0003] Traditional jacking irons are mostly flat plate structures. When the jacking pipe is a reinforced concrete pipe, the jacking iron can be embedded inside the steel socket of the pipe to prevent displacement during the jacking process. However, JCCP pipes, i.e. steel cylinder concrete pipes, do not have exposed steel sockets, so the jacking iron cannot be embedded. During the jacking process, the contact surface between the jacking iron and the pipe is prone to slippage and displacement, resulting in uneven jacking force transmission, which damages the pipe and affects the construction accuracy. In addition, during the hoisting process, it is necessary to manually push it to be aligned with the pipe, which poses a safety risk.

[0004] Therefore, based on the actual working conditions on site, a deflection-proof jacking iron suitable for JCCP pipe jacking was proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a top iron structure that is simple in structure, has a significant anti-slip effect, and can reduce the risk of hoisting operations, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a top iron for preventing deviation of JCCP jacking pipe, comprising a top iron body, a positioning structure for fixing the JCCP jacking pipe is provided on the side of the top iron body, an electromagnetic system that fits with the JCCP jacking pipe is provided inside the top iron body, and a magnetically attractive metal plate is pre-embedded on the corresponding end face of the JCCP jacking pipe.

[0007] Preferably, the positioning structure includes a pair of flat irons, which are bolted to the side of the top iron body.

[0008] Preferably, the flat iron has an L-shaped structure, and the height of the flat iron is 1 / 2 to 2 / 3 of the wall thickness of the pipe.

[0009] Preferably, the flat iron extends longitudinally along the top iron, with a length not less than 10% of the length of the top iron. The inner side of the flat iron that fits against the JCCP jacking pipe is compatible with the curvature of the outer wall of the pipe. The inner side of the flat iron is provided with a rubber friction layer to enhance anti-slip performance.

[0010] Preferably, the rubber friction layer is a composite layer structure, including a base layer, an intermediate layer and a surface layer. The base layer is 3mm high-elasticity neoprene rubber, the intermediate layer is 1mm perforated stainless steel mesh with a pore density of 20-30 pores / cm², and the surface layer is 2mm wear-resistant polyurethane with bidirectional staggered V-shaped grooves evenly distributed on the surface.

[0011] Preferably, a reinforcing triangular plate is welded to the bend of the flat iron.

[0012] Preferably, the top of the top iron body is provided with a hoisting structure for hoisting, and a hoisting hole is provided through the hoisting structure.

[0013] Preferably, the electromagnetic system includes multiple sets of electromagnetic coils and a control system embedded inside the top iron body.

[0014] Preferably, the control system includes a power supply and a control circuit board. The control circuit board controls the on / off state of the relay via a handheld terminal, thereby controlling the magnetic on / off state of the electromagnetic coil.

[0015] Preferably, the top iron body is forged from high-strength alloy steel into a ring structure, and bolt holes for connecting the positioning structure are opened on its side.

[0016] The present invention has the following beneficial effects:

[0017] 1. In this utility model, the flat iron forms a groove to restrict the horizontal and vertical displacement of the pipe, improving the stability of the jacking process by more than 30%;

[0018] 2. This utility model reduces the number of hoisting and adjustment operations by more than 50%, avoids manually pushing the pipe to be aligned, and shortens the single construction cycle by about 15%;

[0019] 3. The reinforced triangular plate design in this utility model increases the shear strength of the flat iron to twice that of ordinary welding;

[0020] 4. The modular structure in this utility model is compatible with existing pipe jacking equipment, and the jacking iron can still be used for jacking operations of reinforced concrete pipes after removal;

[0021] 5. By incorporating an electromagnetic system, this utility model further enhances the stability between the jacking iron and the jacking pipe during the jacking process, making it less prone to displacement. Moreover, it is simple to control, convenient to operate, and practical. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the connection between the jacking iron and the jacking pipe in this utility model;

[0023] Figure 2 This is a schematic diagram of the top iron structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the jacking pipe of this utility model with a metal plate on it;

[0025] Figure 4 This is a schematic diagram of the flat iron structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the rubber friction layer structure of this utility model;

[0027] Figure 6 This is a planar schematic diagram of the structure of each layer of the rubber friction layer of this utility model;

[0028] Figure 7 This is a flowchart of the control logic of the electromagnetic system of this utility model;

[0029] Figure 8 This is a schematic diagram of the structure of the top iron of this utility model with an embedded electromagnetic coil. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0031] Please see Figure 1-7 A first embodiment of an anti-deviation jacking iron suitable for JCCP jacking pipe includes a jacking iron body 1, which is forged from high-strength alloy steel into a circular structure. The outer surface of the side of the jacking iron body 1 is symmetrically provided with two bolt holes, which can be bolted to a flat iron 2. The flat iron 2 is L-shaped, and its height is 1 / 2 of the pipe wall thickness. Its inner side is matched with the curvature of the outer wall of the pipe. The flat iron 2 extends longitudinally along the jacking iron, and its length is 10% of the length of the jacking iron. A reinforcing triangular plate 3 is welded at the bend of the flat iron 2. The inner surface of the flat iron is provided with a rubber friction layer 4 to enhance anti-slip performance. The rubber friction layer 4 is a three-layer composite structure: the base layer 4a is 3mm high-elasticity neoprene rubber, the middle layer 4b is 1mm perforated stainless steel mesh with a hole density of 20 per cm², and the surface layer 4c is 2mm wear-resistant polyurethane with bidirectional staggered V-shaped grooves on the surface, with a groove depth of 0.5mm and a spacing of 2mm. The L-shaped flat iron component 2, the rubber friction layer 4, and the reinforcing triangular plate 3 constitute an independent functional module. The module can be quickly installed and fixed by M12 high-strength bolts and self-locking nuts. The top of the top iron body is equipped with a lifting structure 5 for hoisting. The lifting structure 5 has a through-hole, which is elliptical in shape to facilitate quick docking with the lifting device. Four sets of electromagnetic coils and a control system are evenly embedded along the annular cross-section inside the side of the top iron body 1. The control system includes a power supply and a control circuit board. The power supply can be a 24V / 20000mAh lithium battery pack. The control circuit board integrates Bluetooth 5.0 and LoRa dual-mode communication. The control circuit board controls the relay's on / off state via a handheld terminal, thereby controlling the magnetic on / off state of the electromagnetic coils. A metal plate is pre-embedded on the end face of the JCCP pipe, and a stable connection between the top iron and the JCCP pipe end face is achieved through the electromagnetic coils.

[0032] In this embodiment, the top iron body 1 has an outer diameter of 1200mm, an inner diameter of 1000mm, and a thickness of 80mm. The flat iron 2 is made of Q345B steel, with a height of 40mm and a length of 100mm. The reinforcing triangular plate 3 has a side length of 30mm and a thickness of 8mm. The rubber friction layer 4 has a base layer 4a made of neoprene rubber CR321, an intermediate layer 4b made of 304 stainless steel mesh, and a surface layer 4c made of polyurethane PU95A. The hoisting structure 5 is an arch-shaped structure with a diameter of 50mm, a height of 60mm, a major axis of 40mm, and a minor axis of 30mm for the hoisting holes. The electromagnetic coils are made of neodymium iron boron N35 material, and each set of electromagnetic coils measures 50mm × 30mm × 20mm.

[0033] Please see Figure 1-8 A second embodiment of an anti-deviation jacking iron suitable for JCCP jacking pipe includes a jacking iron body 1, which is forged from high-strength alloy steel into a circular structure. The outer side surface of the jacking iron body 1 is symmetrically provided with two bolt holes, which can be bolted to a flat iron 2. The flat iron 2 is L-shaped, and its height is 2 / 3 of the pipe wall thickness. Its inner side surface matches the curvature of the outer wall of the pipe. The flat iron 2 extends longitudinally along the jacking iron, and its length is 15% of the length of the jacking iron. A reinforcing triangular plate 3 is welded at the bend of the flat iron 2. The inner surface of the flat iron is provided with a rubber friction layer 4 to enhance anti-slip performance. The rubber friction layer 4 is a three-layer composite structure: the base layer 4a is 3mm high-elasticity neoprene rubber, the middle layer 4b is 1mm perforated stainless steel mesh with a hole density of 30 holes / cm², and the surface layer 4c is 2mm wear-resistant polyurethane with bidirectional staggered V-shaped grooves on the surface, with a groove depth of 0.5mm and a spacing of 2mm. The L-shaped flat iron component 2, the rubber friction layer 4, and the reinforcing triangular plate 3 constitute an independent functional module. The module can be quickly installed using M12 high-strength bolts and self-locking nuts. The top of the top iron body is equipped with a lifting structure 5 for hoisting. The lifting structure 5 has a through-hole, which is elliptical in shape to facilitate quick docking with the lifting device. Six sets of electromagnetic coils are evenly embedded along the annular cross-section inside the side of the top iron body 1. The control system includes a power supply and a control circuit board. The power supply can be a 24V / 20000mAh lithium battery pack. The control circuit board integrates Bluetooth 5.0 and LoRa dual-mode communication. The control circuit board controls the relay's on / off state via a handheld terminal, thereby controlling the magnetic on / off state of the electromagnetic coils. A metal plate is pre-embedded on the JCCP pipe end face, and the magnetic switch of the electromagnetic coil is wirelessly controlled to achieve a stable connection between the top iron and the JCCP pipe end face.

[0034] In this embodiment, the top iron body 1 has an outer diameter of 1500mm, an inner diameter of 1300mm, and a thickness of 100mm. The flat iron 2 is made of Q345B steel, with a height of 60mm and a length of 150mm. The reinforcing triangular plate 3 has a side length of 40mm and a thickness of 10mm. The rubber friction layer 4 has a base layer 4a made of neoprene rubber CR322, an intermediate layer 4b made of 304 stainless steel mesh, and a surface layer 4c made of polyurethane PU98A. The hoisting structure 5 is an arch-shaped structure with a diameter of 60mm, a height of 80mm, a major axis of 50mm, and a minor axis of 40mm for the hoisting holes. The electromagnetic coils are made of copper wire, with each set of electromagnetic coils having an outer diameter of 60mm, an inner diameter of 30mm, a height of 30mm, a rated voltage of 24V, and a rated current of 2A.

[0035] Please see Figure 1-7 A third embodiment of an anti-deviation jacking iron suitable for JCCP jacking pipe includes a jacking iron body 1, which is forged from high-strength alloy steel into a circular structure. The outer side surface of the jacking iron body 1 is symmetrically provided with two bolt holes, which can be bolted to a flat iron 2. The flat iron 2 is L-shaped, and its height is 3 / 5 of the pipe wall thickness. Its inner side surface matches the curvature of the outer wall of the pipe. The flat iron 2 extends longitudinally along the jacking iron, and its length is 12% of the length of the jacking iron. A reinforcing triangular plate 3 is welded at the bend of the flat iron 2. The inner surface of the flat iron is equipped with a rubber friction layer 4 to enhance anti-slip performance. The rubber friction layer 4 has a three-layer composite structure: the base layer 4a is 3mm high-elasticity neoprene rubber, the middle layer 4b is 1mm perforated stainless steel mesh with a hole density of 25 holes / cm², and the surface layer 4c is 2mm wear-resistant polyurethane with bidirectional staggered V-shaped grooves on the surface, with a groove depth of 0.5mm and a spacing of 2mm. The L-shaped flat iron component 2, the rubber friction layer 4, and the reinforcing triangular plate 3 constitute an independent functional module. The module can be quickly installed using M12 high-strength bolts and self-locking nuts. The top of the top iron body is equipped with a lifting structure 5 for hoisting. The lifting structure 5 has a through-hole, which is elliptical in shape to facilitate quick docking with the lifting device. Two sets of electromagnetic coils are evenly embedded along the annular cross-section inside the side of the top iron body 1. The control system includes a power supply and a control circuit board. The power supply can be a 24V / 20000mAh lithium battery pack. The control circuit board integrates Bluetooth 5.0 and LoRa dual-mode communication. The control circuit board controls the relay's on / off state via a handheld terminal, thereby controlling the magnetic on / off state of the electromagnetic coils. A metal plate is pre-embedded on the JCCP pipe end face. The magnetic switch of the electromagnetic coil is wirelessly controlled, and the electromagnetic coil works in conjunction with the electromagnetic coil to achieve a stable connection between the top iron and the JCCP pipe end face.

[0036] In this embodiment, the top iron body 1 has an outer diameter of 1350mm, an inner diameter of 1150mm, and a thickness of 90mm. The flat iron 2 is made of Q345B steel, with a height of 50mm and a length of 120mm. The reinforcing triangular plate 3 has a side length of 35mm and a thickness of 9mm. The rubber friction layer 4 has a base layer 4a made of neoprene rubber CR323, an intermediate layer 4b made of 304 stainless steel mesh, and a surface layer 4c made of polyurethane PU96A. The hoisting structure 5 is an arch-shaped structure with a diameter of 55mm, a height of 70mm, a major axis of 45mm, and a minor axis of 35mm for the hoisting holes. The electromagnetic coils are made of copper wire, with each set of electromagnetic coils having an outer diameter of 55mm, an inner diameter of 25mm, a height of 25mm, a rated voltage of 24V, and a rated current of 1.5A.

[0037] The working principle of this invention is as follows: In use, the top iron body 1 is first hoisted to the end face of the JCCP pipe using the hoisting structure 5, ensuring the top iron body 1 is in contact with the pipe end face. Then, a wirelessly controlled electromagnetic coil is energized to generate magnetism, tightly connecting the top iron body 1 to the pre-embedded metal plate on the pipe end face. Simultaneously, the inner side of the flat iron 2 is in contact with the outer wall of the pipe, and the rubber friction layer 4 provides sufficient friction to prevent the top iron from shifting during the jacking process. After jacking is completed, the electromagnetic coil is de-energized via wireless control to eliminate magnetism, allowing for easy disassembly of the top iron. The independent functional module consisting of the flat iron 2, the rubber friction layer 4, and the reinforcing triangular plate 3 can be replaced as needed, improving the applicability and service life of the top iron.

[0038] 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 type of anti-deviation jacking iron suitable for JCCP pipe jacking, characterized in that, It includes a top iron body (1), the top iron body (1) is provided with a positioning structure for fixing the JCCP jacking pipe on the side, the top iron body (1) is provided with an electromagnetic system that fits with the JCCP jacking pipe inside, and a magnetically attracted metal plate is pre-embedded on the corresponding end face of the JCCP jacking pipe.

2. The anti-deviation jacking iron suitable for JCCP jacking pipe according to claim 1, characterized in that: The positioning structure includes a pair of flat irons (2), which are bolted to the side of the top iron body (1).

3. The anti-deviation jacking iron suitable for JCCP jacking pipe according to claim 2, characterized in that: The flat iron (2) has an L-shaped structure, and the height of the flat iron (2) is 1 / 2 to 2 / 3 of the wall thickness of the pipe.

4. The anti-deviation jacking iron suitable for JCCP jacking pipe according to claim 3, characterized in that: The flat iron (2) extends longitudinally along the top iron, with a length not less than 10% of the length of the top iron. The inner side of the flat iron (2) that is in contact with the JCCP top pipe is matched with the curvature of the outer wall of the pipe. The inner side of the flat iron (2) is provided with a rubber friction layer (4) to enhance the anti-slip performance.

5. A type of anti-deviation jacking iron suitable for JCCP jacking pipe according to claim 4, characterized in that: The rubber friction layer (4) is a composite layer structure, including a base layer (4a), an intermediate layer (4b) and a surface layer (4c). The base layer (4a) is 3mm high-elasticity neoprene rubber, the intermediate layer (4b) is 1mm perforated stainless steel mesh with a pore density of 20-30 pores / cm², and the surface layer (4c) is 2mm wear-resistant polyurethane with bidirectional staggered V-shaped grooves evenly distributed on the surface.

6. A type of anti-deviation jacking iron suitable for JCCP jacking pipe according to claim 5, characterized in that: A reinforcing triangular plate (3) is welded to the bend of the flat iron (2).

7. A type of anti-deviation jacking iron suitable for JCCP jacking pipe according to claim 1, characterized in that: The top of the main body (1) is provided with a hoisting structure (5) for hoisting, and a hoisting hole is provided through the hoisting structure (5).

8. A type of anti-offset jacking iron suitable for JCCP jacking pipes according to claim 1, characterized in that: The electromagnetic system includes multiple sets of electromagnetic coils and a control system embedded inside the top iron body (1).

9. A type of anti-offset jacking iron suitable for JCCP jacking pipe according to claim 8, characterized in that: The control system includes a power supply and a control circuit board. The control circuit board controls the on / off state of the relays via a handheld terminal, thereby controlling the magnetic on / off state of the electromagnetic coil.

10. A type of anti-offset jacking iron suitable for JCCP jacking pipe according to claim 1, characterized in that: The top iron body (1) is forged from high-strength alloy steel into a circular structure, and bolt holes for connecting the positioning structure are provided on its side.

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