Hydraulic oil cylinder hoisting device and method for ship lift lock head working gate in limited space

Abstract

The invention provides a ship lift lock head limited space working gate hydraulic oil cylinder hoisting device and method.The ship lift lock head limited space working gate hydraulic oil cylinder hoisting device comprises a hoisting shaft device and a hoisting connecting device.After the hoisting device disassembles a large-tonnage crane main hook of an equipment layer, a hoisting shaft, a hoisting shaft sleeve, a steel wire rope inner baffle, a steel wire rope outer baffle and a locking threaded rod are sequentially installed; forming a hoisting shaft device; the hoisting steel wire rope is installed between the steel wire rope inner baffle and the steel wire rope outer baffle, the two ends of the hoisting steel wire rope penetrate through the connecting clamping rings to be connected with hydraulic oil cylinder hoisting lug plates, and hydraulic oil cylinder hoisting is achieved by driving the traveling crane main hook hoisting device to hoist. The whole device is convenient to disassemble and assemble and safe and efficient in hoisting process. Belongs to the technical field of hydraulic oil cylinder hoisting in limited space.

Description

Technical Field

[0001] The invention relates to a device and method for hoisting a hydraulic oil cylinder of a working gate in a limited space at a ship lift lock head, and belongs to the technical field of hoisting a hydraulic oil cylinder in a limited space. Background Art

[0002] The working gate of the ship lift is responsible for blocking the water level of the waterway. At the same time, the height of the working gate can be adjusted to achieve the effect of paralleling the water level of the ship compartment and the waterway, ensuring that the ship can pass the ship lift smoothly under all water level conditions. As an important component for adjusting the position of the working gate, the hydraulic cylinder needs to be in high pressure and heavy load working conditions for a long time. After reciprocating operation, the seals of the hydraulic cylinder will age and be damaged to varying degrees, and even pitting and scratches will appear on the inner wall of the hydraulic cylinder. If it continues to operate, it will cause the hydraulic cylinder to leak oil and "collapse" safety hazards. In order to improve the reliability of equipment operation safety, the hydraulic cylinder needs to be dismantled and repaired regularly.

[0003] The hydraulic cylinder of the working gate of a large ship lift is installed indoors. According to the requirements, the indoor structure is fully enclosed and the space height is limited. Large lifting equipment cannot carry out effective hydraulic cylinder lifting operations. At the same time, a large-tonnage crane is installed indoors. However, after the main hook of the crane is connected to the lifting lug of the hydraulic cylinder, the crane is lifted to the limit position, and the hydraulic cylinder head still cannot be lifted to the surface of the hydraulic cylinder installation base, resulting in the hydraulic cylinder cannot be removed for maintenance. The lifting height of the crane in the factory is only 5.64m, and the minimum height required for the cylinder removal is 6.3m. There are mature outdoor lifting solutions on the market, but there is still no effective lifting device to solve this problem under the condition of limited height space indoors. Summary of the invention

[0004] The invention provides a device and method for hoisting a hydraulic cylinder of a gate working in a confined space at a ship lift lock head, which solves the problem of hoisting the hydraulic cylinder of the gate when the indoor hoisting space is limited.

[0005] In order to solve the above problems, it is proposed to adopt a hydraulic cylinder lifting device for the working gate in the confined space of the ship lift lock, which includes a lifting shaft device, a lifting connection device and a crane main hook lifting device. The lifting shaft device arranged horizontally replaces the crane main hook and is fixed to the lower end of the crane main hook lifting device. Lifting ear plates are respectively installed on both sides of the upper end of the hydraulic cylinder, and the two ends of the lifting shaft device are respectively connected to the lifting ear plates on both sides of the hydraulic cylinder through the lifting connection device.

[0006] In the aforementioned hydraulic cylinder lifting device, the distance between the upper end of the hydraulic cylinder and the lifting shaft device is greater than or equal to 100 mm.

[0007] In the aforementioned hydraulic cylinder lifting device, the lifting shaft device includes a lifting shaft, a lifting shaft sleeve is sleeved in the middle of the lifting shaft, and a crane main hook mounting plate is respectively installed on the lifting shafts that fit the two ends of the lifting shaft sleeve, and a wire rope inner baffle plate and a wire rope outer baffle plate are sleeved on the lifting shafts outside the two crane main hook mounting plates from inside to outside in sequence, and a width for installing the wire rope is reserved between the wire rope inner baffle plate and the wire rope outer baffle plate on the same side, and a threaded hole is opened perpendicular to the axial direction on the lifting shaft outside the wire rope outer baffle plate, and a locking threaded rod with both ends extending to the outside of the threaded hole is fixedly installed in the threaded hole to limit the wire rope outer baffle plate;

[0008] In the aforementioned hydraulic cylinder lifting device, the lifting connection device includes a lifting wire rope and a connecting clip. The upper ends of the two lifting wire ropes are respectively mounted on the lifting shaft between the wire rope inner baffle and the wire rope outer baffle on both sides. The two connecting clips are respectively connected to the lifting ear plates on both sides of the hydraulic cylinder. The lower ends of the two lifting wire ropes are respectively fixed on the two connecting clips, so that the hydraulic cylinder is located directly below the lifting shaft device and between the two sets of lifting connection devices, and the distance between the hydraulic cylinder and the lifting shaft device is adjusted by adjusting the length of the lifting wire rope.

[0009] The present invention also provides a method for hoisting a hydraulic cylinder of a working gate in a confined space at a ship lift lock head, which specifically comprises the following steps:

[0010] Step 1, installation: transport the hoisting shaft device to the construction site, lower the large-tonnage crane main hook to the ground, disassemble the large-tonnage crane main hook, and then assemble the hoisting shaft device;

[0011] Step 2, connection: After the installation of the lifting shaft device is completed, use the crane to transfer the lifting shaft device to the top of the hydraulic cylinder, lower the lifting shaft device to a suitable position, install the lifting wire rope between the inner baffle plate and the outer baffle plate of the lifting shaft device, connect the large-tonnage connecting rings at both ends of the lifting wire rope, and connect them to the lifting ear plate of the hydraulic cylinder;

[0012] Step 3, start: After the hydraulic cylinder lifting device is fully installed, start the crane to slowly lift it to achieve the effect of pre-tightening the lifting wire rope and ensure that the hydraulic cylinder is in a vertical state.

[0013] Step 4, dismantling: adjust the working door to the inspection position and lock it through the locking device, remove the hydraulic cylinder piston rod lifting head and the working door connecting rod pin and accessories, retract the hydraulic cylinder piston rod completely, manually close the hydraulic cylinder upper and lower chamber oil inlet and return ball valves, remove the oil inlet and return oil pipe joints and release the remaining oil in the oil pipe, remove the upper and lower chamber oil pipes of the hydraulic cylinder, and seal the oil pipes with plugs, remove the fixing bolts of the hydraulic cylinder support hinge seat and mark the position;

[0014] Step 5: Lifting: Start the crane to drive the hydraulic cylinder lifting device to slowly lift the hydraulic cylinder, and finely adjust the position of the hydraulic cylinder by the crane to lift it from the installation base to the ground;

[0015] Step 6. Dumping: lift the hydraulic cylinder to an open area in the yard, place a tire at the lifting head of the hydraulic cylinder piston rod, slowly lower the hydraulic cylinder until the lifting head of the piston rod contacts the tire, stack sleepers in the upper and lower chambers of the hydraulic cylinder, adjust the crane to move along the direction of the hydraulic cylinder body, and slowly lower the hydraulic cylinder lifting device to achieve horizontal dumping of the hydraulic cylinder for subsequent transportation and dismantling and repair work.

[0016] In the above step 1, the lifting shaft is installed in the mounting hole of the crane main hook mounting plate, the lifting shaft sleeve passes through the lifting shaft and is installed between the two crane main hook mounting plates, and the wire rope inner baffle, wire rope outer baffle and locking threaded rod are installed at both ends of the lifting shaft in sequence to limit the displacement of the crane main hook mounting plate and the wire rope outer baffle.

[0017] Compared with the prior art, the present invention has the following technical effects:

[0018] 1. By improving the whole set of hydraulic cylinder lifting device, the existing main hook of the indoor crane is replaced by the lifting shaft device. There is no need to modify the existing equipment. It is only necessary to remove the original main hook of the crane and install the lifting shaft device. The distance between the lifting device and the hydraulic cylinder is greatly shortened, so that the lifting height of the hydraulic cylinder by the factory crane is increased to about 6.54m, which is much higher than the original lifting height of 5.64m of the factory crane, and also much higher than the minimum height of 6.3m required for cylinder removal. It can effectively realize the safe and efficient lifting of the hydraulic cylinder under the condition of limited indoor space, avoid the high cost of dismantling the roof and renting large lifting equipment, reduce maintenance costs, and has great application prospects under the condition of limited indoor space.

[0019] 2. By setting inner and outer baffles for the wire rope on the lifting shaft device, and combining the different stress conditions of the inner and outer baffles of the wire rope during use, setting inner and outer baffles of the wire rope of different sizes can effectively solve the problem of slipping caused by uneven stress on the wire rope during actual lifting, and avoid safety accidents.

[0020] 3. By providing a lifting shaft sleeve for the lifting shaft device, displacement of the main hook mounting plate of the crane can be avoided, thereby reducing the risk of safety accidents caused by displacement and deformation of the main hook mounting plate of the crane during the lifting process.

[0021] 4. By setting the whole set of hydraulic cylinder lifting device as on-site splicing type, it can realize rapid disassembly and assembly on site, convenient transportation and storage, does not occupy driving resources for a long time, can be constructed in multiple sites and multiple working conditions, and has certain versatility and convenience.

[0022] This technology has been put into practical application in the hydraulic cylinder of a large ship lift working gate, with excellent results. It has important guiding significance and promotion value for other similar projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of the lifting shaft device;

[0025] Figure 3 It is a schematic diagram of the overall structure of the lifting connection device;

[0026] Figure 4 This is the schematic diagram of the original main hook structure;

[0027] Figure 5 It is a schematic diagram of the indoor hydraulic cylinder and the driving position;

[0028] Among them, the figure marks are: 1 represents a lifting shaft device, 11 represents a lifting shaft, 12 represents a lifting shaft sleeve, 13 represents a crane main hook mounting plate, 14 represents an inner baffle plate of a wire rope, 15 represents an outer baffle plate of a wire rope, 16 represents a locking threaded rod, 2 represents a lifting connection device, 21 represents a lifting wire rope, 22 represents a connecting clamp, 3 represents a crane main hook lifting device, 4 represents a hydraulic cylinder, 41 represents a lifting ear plate, and 5 represents a crane main hook. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] Example 1

[0031] See attached Figures 1 to 5The present embodiment improves the hydraulic cylinder lifting device for the working gate of the confined space at the ship lift lock. The improved hydraulic cylinder lifting device for the working gate of the confined space at the ship lift lock comprises a lifting shaft device 1, a lifting connection device 2 and a crane main hook lifting device 3. The lifting shaft device 1 arranged in the transverse direction replaces the crane main hook 5 and is fixed to the lower end of the crane main hook lifting device 3. Lifting ear plates 41 are respectively installed on both sides of the upper end of the hydraulic cylinder 4. The two ends of the lifting shaft device 1 are respectively hoisted and connected to the lifting ear plates 41 on both sides of the hydraulic cylinder 4 through the lifting connection device 2. The distance between the upper end of the hydraulic cylinder 4 and the lifting shaft device 1 is 159 mm, so that the lifting height of the hydraulic cylinder 4 by the factory crane is increased to about 6.54 m, which is much higher than the original lifting height of the factory crane of 5.64 m, and also much greater than the minimum height of 6.3 m required for the cylinder to be removed.

[0032] The hoisting shaft device 1 includes a hoisting shaft 11, a hoisting shaft sleeve 12 is sleeved on the middle part of the hoisting shaft 11, and a main hook mounting plate 13 is respectively installed on the hoisting shaft 11 at both ends of the hoisting shaft sleeve 12, and a wire rope inner baffle 14 and a wire rope outer baffle 15 are sleeved on the hoisting shaft 11 outside the two main hook mounting plates 13 from the inside to the outside, and a width for installing the wire rope is reserved between the wire rope inner baffle 14 and the wire rope outer baffle 15 on the same side, and a threaded hole is opened perpendicular to the axial direction on the hoisting shaft 11 outside the wire rope outer baffle 15, and a locking threaded rod 16 with both ends extending to the outside of the threaded hole is fixedly installed in the threaded hole to limit the wire rope outer baffle 15, and the baffle is used to limit the displacement of the wire rope under force, and the wire rope inner baffle 14 and the wire rope outer baffle 15 can also be replaced by other axial limiting structures, such as welding a fixed limiting structure on the shaft;

[0033] The lifting connection device 2 includes a lifting wire rope 21 and a connecting clip 22. The upper ends of the two lifting wire ropes 21 are respectively mounted on the lifting shaft 11 between the wire rope inner baffle 14 and the wire rope outer baffle 15 on both sides. The two connecting clips 22 are respectively connected to the lifting ear plates 41 on both sides of the hydraulic cylinder 4. The lower ends of the two lifting wire ropes 21 are respectively fixed on the two connecting clips 22, thereby achieving the effect of lifting the hydraulic cylinder. The hydraulic cylinder 4 is located directly below the lifting shaft device 1 and between the two sets of lifting connection devices 2. The distance between the hydraulic cylinder 4 and the lifting shaft device 1 is adjusted by adjusting the length of the lifting wire rope 21.

[0034] The specific method of hoisting using the hydraulic cylinder hoisting device for the confined space working gate of the ship lift lock is as follows:

[0035] Step 1, installation: the hoisting shaft device 1 is transported to the construction site, the large-tonnage crane main hook is lowered to the ground, the large-tonnage crane main hook 5 is disassembled, and then the hoisting shaft device 1 is assembled, including installing the hoisting shaft 11 in the installation hole of the crane main hook mounting plate 13, the hoisting shaft sleeve 12 passes through the hoisting shaft 11 and is installed between the two crane main hook mounting plates 13, and the wire rope inner baffle 14, the wire rope outer baffle 15 and the locking threaded rod 16 are installed at both ends of the hoisting shaft 11 in sequence to limit the displacement of the crane main hook mounting plate 13 and the wire rope outer baffle 15;

[0036] Step 2, connection: After the installation of the hoisting shaft device 1 is completed, the hoisting shaft device 1 is transferred to the top of the hydraulic cylinder 4 by a crane, and the hoisting shaft device 1 is lowered to a suitable position. The hoisting wire rope 21 is installed between the inner baffle plate 14 and the outer baffle plate 15 of the hoisting shaft device 1. The two ends of the hoisting wire rope 21 are connected to the large-tonnage connecting clamps 22 and connected to the hoisting ear plates 41 of the hydraulic cylinder 4;

[0037] Step 3, start: After the hydraulic cylinder hoisting device is fully installed, start the crane to slowly lift it to achieve the pre-tightening effect of the hoisting wire rope 21 to ensure that the hydraulic cylinder 4 is in a vertical state.

[0038] Step 4, dismantling: adjust the working door to the inspection position and lock it through the locking device, remove the piston rod lifting head of hydraulic oil cylinder 4 and the connecting rod pin and accessories of the working door, retract the piston rod of hydraulic oil cylinder 4 completely, manually close the ball valves of the upper and lower chambers of hydraulic oil cylinder 4 inlet and return oil circuits, remove the oil pipe joints of the inlet and return oil circuits and release the remaining oil in the oil pipes, remove the upper and lower chamber oil pipes of hydraulic oil cylinder 4, and seal the oil pipes with plugs, remove the fixing bolts of the hinge seat of hydraulic oil cylinder 4 and mark the positions;

[0039] Step 5, lifting: Start the crane to drive the hydraulic cylinder lifting device to slowly lift the hydraulic cylinder 4, and finely adjust the position of the hydraulic cylinder 4 by the crane to lift the hydraulic cylinder 4 from the installation base to the ground;

[0040] Step 6, dumping: lift the hydraulic cylinder 4 to an open place in the yard, place the tire at the lifting head of the piston rod of the hydraulic cylinder 4, slowly lower the hydraulic cylinder 4 until the lifting head of the piston rod contacts the tire, stack sleepers in the upper and lower chambers of the hydraulic cylinder 4 respectively, move along the direction of the cylinder body of the hydraulic cylinder 4 by adjusting the driving, and slowly lower the hydraulic cylinder lifting device to achieve horizontal dumping of the hydraulic cylinder 4, so as to carry out subsequent transportation and dismantling and repair work. Due to the symmetrical double lifting ear structure, the horizontal dumping process can be more stable.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The hydraulic cylinder hoisting device for the confined space working gate of the ship lift lock is characterized by: The invention comprises a lifting shaft device (1), a lifting connection device (2) and a main hook lifting device (3). The lifting shaft device (1) arranged in a transverse direction replaces the main hook (5) of the crane and is fixed to the lower end of the main hook lifting device (3). Lifting ear plates (41) are respectively installed on both sides of the upper end of the hydraulic cylinder (4). The two ends of the lifting shaft device (1) are respectively connected to the lifting ear plates (41) on both sides of the hydraulic cylinder (4) through the lifting connection device (2).

2. According to claim 1, the hydraulic cylinder hoisting device for the confined space working gate of the ship lift lock head is characterized in that: The distance between the upper end of the hydraulic cylinder (4) and the hoisting shaft device (1) is greater than or equal to 100 mm.

3. According to claim 1, the hydraulic cylinder hoisting device for the confined space working gate of the ship lift lock head is characterized in that: The hoisting shaft device (1) comprises a hoisting shaft (11), a hoisting shaft sleeve (12) is sleeved in the middle of the hoisting shaft (11), a main hook mounting plate (13) is respectively mounted on the hoisting shaft (11) at both ends of the hoisting shaft sleeve (12), a wire rope inner baffle (14) and a wire rope outer baffle (15) are sleeved on the hoisting shaft (11) outside the two main hook mounting plates (13) from inside to outside, and a width for installing a wire rope is reserved between the wire rope inner baffle (14) and the wire rope outer baffle (15) on the same side, a threaded hole is opened perpendicular to the axial direction on the hoisting shaft (11) outside the wire rope outer baffle (15), and a locking threaded rod (16) with both ends extending to the outside of the threaded hole is fixedly mounted in the threaded hole to limit the wire rope outer baffle (15).

4. According to claim 3, the hydraulic cylinder hoisting device for the confined space working gate of the ship lift lock head is characterized in that: The hoisting connection device (2) comprises a hoisting steel wire rope (21) and a connecting clamp (22). The upper ends of the two hoisting steel wire ropes (21) are respectively sleeved on the hoisting shaft (11) between the steel wire rope inner baffle (14) and the steel wire rope outer baffle (15) on both sides. The two connecting clamps (22) are respectively connected to the hoisting ear plates (41) on both sides of the hydraulic cylinder (4). The lower ends of the two hoisting steel wire ropes (21) are respectively fixed to the two connecting clamps (22), so that the hydraulic cylinder (4) is located directly below the hoisting shaft device (1) and between the two sets of hoisting connection devices (2). The distance between the hydraulic cylinder (4) and the hoisting shaft device (1) is adjusted by adjusting the length of the hoisting steel wire ropes (21).

5. A method for hoisting a hydraulic cylinder of a working gate in a confined space at a ship lift lock head, characterized in that: The specific steps include: Step 1, installation: the hoisting shaft device (1) is transported to the construction site, the large-tonnage crane main hook is lowered to the ground, the large-tonnage crane main hook (5) is disassembled, and then the hoisting shaft device (1) is assembled; Step 2, connection: After the installation of the hoisting shaft device (1) is completed, the hoisting shaft device (1) is transferred to the top of the hydraulic cylinder (4) by using a crane, and the hoisting shaft device (1) is lowered to a suitable position. The hoisting wire rope (21) is installed between the inner baffle plate (14) and the outer baffle plate (15) of the hoisting shaft device (1). The two ends of the hoisting wire rope (21) are connected to large-tonnage connecting clamps (22) and connected to the hoisting ear plates (41) of the hydraulic cylinder (4); Step 3, start: After the hydraulic cylinder hoisting device is fully installed, start the crane to slowly lift it to achieve the pre-tightening effect of the hoisting wire rope (21) to ensure that the hydraulic cylinder (4) is in a vertical state; Step 4, dismantling: adjust the working door to the inspection position and lock it with the locking device, remove the piston rod lifting head of the hydraulic oil cylinder (4) and the connecting rod pin shaft and accessories of the working door, fully retract the piston rod of the hydraulic oil cylinder (4), manually close the ball valves of the upper and lower chambers of the hydraulic oil cylinder (4), remove the oil pipe joints of the oil pipes and drain the remaining oil in the pipes, remove the upper and lower chamber oil pipes of the hydraulic oil cylinder (4), and seal the oil pipes with plugs, remove the fixing bolts of the support hinge seat of the hydraulic oil cylinder (4) and mark the positions; Step 5, lifting: Start the crane to drive the hydraulic cylinder lifting device to slowly lift the hydraulic cylinder (4), and finely adjust the position of the hydraulic cylinder (4) by the crane to lift the hydraulic cylinder (4) from the installation base to the ground; Step 6, dumping: the hydraulic cylinder (4) is hoisted to an open area in the field, a tire is placed at the piston rod lifting head of the hydraulic cylinder (4), the hydraulic cylinder (4) is slowly lowered until the piston rod lifting head contacts the tire, sleepers are piled in the upper and lower chambers of the hydraulic cylinder (4), the crane is adjusted to move along the cylinder body of the hydraulic cylinder (4), and the hydraulic cylinder lifting device is slowly lowered to achieve horizontal dumping of the hydraulic cylinder (4) so ​​as to carry out subsequent transportation and dismantling and repair work.

6. The method for hoisting the hydraulic cylinder of the confined space working gate of the ship lift lock according to claim 5 is characterized in that: In step 1, the hoisting shaft (11) is installed in the installation hole of the main hook mounting plate (13) of the crane, the hoisting shaft sleeve (12) passes through the hoisting shaft (11) and is installed between two main hook mounting plates (13) of the crane, and the inner baffle plate (14) of the wire rope, the outer baffle plate (15) of the wire rope and the locking threaded rod (16) are installed at both ends of the hoisting shaft (11) in sequence to limit the displacement of the main hook mounting plate (13) of the crane and the outer baffle plate (15) of the wire rope.

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