Hydraulic pulling connection device for underwater large box culvert installation

Abstract

The utility model relates to a hydraulic pulling connection device for underwater large box culvert installation, which comprises a hydraulic cylinder, a steel wire rope and a hydraulic pump station, a plurality of integrated lifting lugs are arranged on a box culvert, one end of the hydraulic cylinder is hinged to the lifting lugs of the box culvert, and the other end of the hydraulic cylinder is detachably provided with a first pull ring. Second pull rings are detachably arranged on the lifting lugs on the adjacent box culverts, the steel wire ropes are connected with the first pull rings and the second pull rings, and the hydraulic cylinders are connected with the hydraulic pump station. The integrated lifting lug is arranged on the box culvert, a new pulling and closing lifting appliance does not need to be added, the integrated lifting lug can serve as a pulling and closing base, steel of the pulling and closing lifting lug can be saved, cost is reduced, the steel wire rope is adopted as an adjusting component for different pulling and closing center distances, the working condition conversion speed is high, the specification of the hydraulic cylinder can be properly reduced, and the working efficiency is improved. Therefore, the weight of the whole set of pulling and closing device is reduced, underwater operation is facilitated, installation is convenient, and construction efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of box culvert connection, in particular to a hydraulic pulling and closing connection device for installing a large underwater box culvert. Background Art

[0002] The installation of large underwater box culverts involves complex technical challenges, and hydraulic pull-and-close connection devices have become one of the key technologies to solve these challenges. However, the underwater construction environment is complex, involving multiple factors such as water pressure, water flow, and turbidity. This makes it relatively difficult to carry out structural connection work underwater, requiring special techniques and equipment. When working underwater, visibility is usually low, which increases the difficulty of construction. The design of the connection device needs to consider the possibility of operation under limited visibility conditions, and other auxiliary means may need to be used to improve work efficiency and safety. Underwater box culverts may be subject to some deformation or irregularities during installation. The connection device needs to have a certain adaptability to handle structural adjustments and deformations to ensure the stability and reliability of the connection device. Taking these technical background factors into consideration, the design and use of hydraulic pull-and-close connection devices need to combine knowledge from multiple fields such as physics, mechanical engineering, and underwater engineering to ensure that the installation process of large underwater box culverts is smooth, safe, and reliable.

[0003] Traditional large-scale underwater installation of pipe culverts requires additional pulling and closing fixtures in most cases due to the different transportation methods. Hydraulic cylinders are used as pulling and closing devices, which have the following main disadvantages: First, it wastes materials and cannot fully utilize the role of the lifting lugs, which is not economical; second, the construction efficiency is low. The full hydraulic pulling and closing device uses a telescopic cylinder to adjust the length, the adjustment amount is limited, and the weight is large, which makes underwater operation inconvenient and inefficient; third, the cost is high, and the cost of divers to complete the same amount of work is high. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a hydraulic pulling and closing connection device for installing a large underwater box culvert in view of the above shortcomings.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A hydraulic pulling and closing connection device for installing a large underwater box culvert comprises a hydraulic cylinder, a steel wire rope and a hydraulic pump station.

[0007] The box culvert is provided with a plurality of integrated lifting ears, one end of the hydraulic cylinder is hinged to the lifting ear of the box culvert, and the other end is detachably provided with a first pull ring, and the lifting ear on the adjacent box culvert is detachably provided with a second pull ring, the steel wire rope connects the first pull ring and the second pull ring, and the hydraulic cylinder is connected to the hydraulic pump station.

[0008] Furthermore, a first fixing hole is provided in the middle of the lifting ear, a second fixing hole is provided on the side of the lifting ear, and the hydraulic cylinder is hinged to the second fixing hole.

[0009] Furthermore, the hydraulic cylinder and the first pull ring are hinged via a latch.

[0010] Furthermore, the lifting ear is hinged to the second pull ring via a latch pin.

[0011] Furthermore, the hydraulic pump station is arranged on a water platform.

[0012] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0013] The utility model provides an integrated lifting lug on the box culvert, which eliminates the need to add a new pull-and-close lifting device and can also serve as a pull-and-close base, thereby saving steel for the pull-and-close lifting lug and reducing costs.

[0014] The utility model adopts a steel wire rope as an adjustment member for different pulling and closing center distances, has a fast working condition conversion speed, and can appropriately reduce the specifications of the hydraulic cylinder, thereby reducing the weight of the entire pulling and closing device, facilitating underwater operation, and convenient installation, with high construction efficiency;

[0015] The utility model has good pulling and closing effect, the box culvert is tightly connected, can meet the construction requirements, and is easy to operate and has low maintenance cost.

[0016] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A side view of an embodiment of the utility model;

[0018] Figure 2 A top view of an embodiment of the utility model;

[0019] Figure 3 for Figure 2 A magnified image of point A;

[0020] Figure 4 It is a structural schematic diagram of the lifting ear of the utility model.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Hydraulic cylinder; 2. Steel wire rope; 3. Box culvert; 4. Lifting eye; 41. First fixing hole; 42. Second fixing hole; 51. First pull ring; 52. Second pull ring; 6. Pin; 7. Concrete stopper. DETAILED DESCRIPTION

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise" and "counterclockwise" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Embodiment 1:

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, a hydraulic pulling and closing connection device for installing a large underwater box culvert includes a hydraulic cylinder 1, a steel wire rope 2 and a hydraulic pump station.

[0027] A plurality of integrated lifting eyes 4 are provided on the box culvert 3, one end of the hydraulic cylinder 1 is hinged to the lifting eye 4 of the box culvert 3, and the other end is detachably provided with a first pull ring 51, and a second pull ring 52 is detachably provided on the lifting eye 4 on the adjacent box culvert 3, the steel wire rope 2 connects the first pull ring 51 and the second pull ring 52, and the hydraulic cylinder 1 is connected to the hydraulic pump station.

[0028] like Figure 4 As shown, the lifting eye 4 and the box culvert 3 are integrated, a first fixing hole 41 is provided in the middle of the lifting eye 4, the first fixing hole 41 is used for the lifting operation of the box culvert 3, a second fixing hole 42 is provided on the side of the lifting eye 4, the hydraulic cylinder 1 is hinged on the second fixing hole 42, the second fixing hole 42 is used to connect the hydraulic cylinder 1, so that the lifting eye 4 can also serve as a pulling and closing base.

[0029] Preferably, the hydraulic cylinder 1 and the first pull ring 51 are hinged via a latch 6 .

[0030] Preferably, the lifting ear 4 is hinged to the second pull ring 52 via a latch 6 .

[0031] Preferably, the hydraulic pump station is arranged on a water platform.

[0032] Preferably, concrete blocks 7 are provided on the sides of the two box culverts 3 to be connected, and the concrete blocks 7 are used to support the sides of the box culvert 3 to ensure that the box culvert 3 does not deviate during the pulling and connecting process, thereby ensuring the stability of the pulling and connecting.

[0033] The maximum pulling force of each set of hydraulic tensioning and closing connection device is 50t, and the tensioning speed is 0.4m / min. Generally, a hydraulic cylinder 1 is installed on both sides of the box culvert 3, and the stroke of the hydraulic cylinder 1 is 1m. During operation, the piston rod is extended 0.7m, and an adjustment range of 0.3m is reserved;

[0034] When the box culvert 3 is hoisted into place, the spacing of the box culvert 3 is adjusted to 0.2m~0.3m, and the extension and retraction of the hydraulic cylinder 1 is controlled by a manual reversing valve. The reversing valve adopts a double manual reversing valve, which can be single-acting or linked to ensure the synchronization of both sides during the tensioning process of the box culvert.

[0035] The diameter of the wire rope is 40mm. According to the different working conditions of the main lifting point center distance of 4m, 5m, 6m, 7m, etc. after the box culvert is installed in place, different lengths of wire rope are adjusted to meet several box culvert docking installation conditions.

[0036] Construction process:

[0037] (1) Preparation

[0038] Before construction, the hydraulic pump station, pipelines, hydraulic cylinders and other components should be inspected to ensure that the parameters of each component are operating normally;

[0039] (2) Installation and debugging

[0040] Fix the hydraulic pump station to a stable place (such as a flat barge), then fill it with 46# anti-wear hydraulic oil and connect the power supply AC308V / 50Hz. Connect the hydraulic cylinder 1 and the hydraulic pump station through the oil pipe. Each hydraulic cylinder 1 is connected to the hydraulic pump station through two oil pipes. After the connection, start the pump station and observe the rotation direction of the pump station (clockwise rotation facing the motor fan). Run it without load for 5 minutes. After the equipment runs normally, manually operate the hydraulic cylinder 1 to extend and retract to exhaust the air in the cylinder (note that the no-load operation is low-pressure operation);

[0041] (3) Install the rigging

[0042] Install the first pull ring 51 on the hydraulic cylinder 1, and connect the first pull ring 51 and the second pull ring 52 through the wire rope 2;

[0043] (4) Underwater installation

[0044] The hydraulic pulling and closing device is hoisted into the water by a crawler crane on a flat barge, and is installed on the lifting lugs 4 of the two box culverts 3 to be pulled together by underwater personnel, that is, one end of the hydraulic cylinder 1 is installed on the lifting lug 4 of one of the box culverts 3, and the second pull ring 52 is installed on the lifting lug 4 of the other box culvert 3;

[0045] (5) Box culvert closing

[0046] After the hydraulic cylinder 1 is installed underwater, the pulling operation is carried out. The working pressure of each hydraulic cylinder 1 is 10MPa. Before pulling, the existing pulling stroke is measured and estimated, and the underwater personnel monitor and feedback the pulling status in real time (the underwater personnel stay away from the pipeline and wire rope to prevent breakage and safety accidents). The onshore operator monitors the pressure of the pulling system.

[0047] (6) Equipment dismantling

[0048] After the hydraulic cylinder 1 is pulled together, the underwater personnel remove the hydraulic cylinder 1 and the second pull ring 52 from the lifting lug 4, and the hydraulic pulling and closing device is lifted from underwater by a crawler crane. After the hydraulic cylinder 1 is lifted from underwater, the piston rod of the hydraulic cylinder 1 is retracted, and the hydraulic cylinder 1 is cleaned with fresh water and blown clean with high-pressure air to prevent corrosion and rust. After the hydraulic device is removed, it is moved to the next installation position.

[0049] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A hydraulic pull-and-close connection device for installing a large underwater box culvert, characterized in that: It comprises a hydraulic cylinder (1), a steel wire rope (2) and a hydraulic pump station. A plurality of integrated lifting eyes (4) are provided on the box culvert (3); one end of the hydraulic cylinder (1) is hinged to the lifting eye (4) of the box culvert (3); the other end is detachably provided with a first pull ring (51); the lifting eye (4) on the adjacent box culvert (3) is detachably provided with a second pull ring (52); the steel wire rope (2) connects the first pull ring (51) and the second pull ring (52); and the hydraulic cylinder (1) is connected to a hydraulic pump station.

2. The hydraulic pulling and closing connection device for installing a large underwater box culvert according to claim 1 is characterized in that: A first fixing hole (41) is provided in the middle of the lifting eye (4), a second fixing hole (42) is provided on the side of the lifting eye (4), and the hydraulic cylinder (1) is hinged to the second fixing hole (42).

3. The hydraulic pulling and closing connection device for installing a large underwater box culvert according to claim 1 is characterized in that: The hydraulic cylinder (1) and the first pull ring (51) are hinged via a latch (6).

4. The hydraulic pulling and closing connection device for installing a large underwater box culvert according to claim 1 is characterized in that: The lifting ear (4) is hingedly connected to the second pull ring (52) via a latch (6).

5. The hydraulic pulling and closing connection device for installing a large underwater box culvert according to claim 1 is characterized in that: The hydraulic pump station is arranged on the water platform.

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