Ship dragging and jacking device on ship bearing box of ship lift

Abstract

The invention discloses a ship dragging and jacking device on a ship bearing box of a ship lift in the technical field of ship locks, which comprises a dragging and jacking trolley walking on a deck of the ship bearing box and a trolley driving mechanism driving the dragging and jacking trolley to walk, a sliding dragging and jacking rod is arranged on the dragging and jacking trolley in a sliding mode, and connecting pieces detachably connected with a ship are arranged at the two ends of the dragging and jacking rod. The dragging and jacking rod is connected with a dragging and jacking rod driving mechanism for driving the dragging and jacking rod to slide; and the dragging and jacking trolley and the dragging and jacking rod can respectively move in respective rails and grooves. In the process of assisting the ship in entering and exiting the ship bearing box by adopting the scheme, a propeller does not need to be started to drive the ship to travel and the ship is not required to be towed by external force to enter and exit the ship bearing box, the phenomenon of draft increase caused by stern sinking when the propeller runs is avoided, the risk of touching the ship bearing box when the propeller runs is eliminated, and the ship loading capacity can be increased; the economic benefit is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of ship locks, and in particular relates to a ship towing device on a ship lifting box. Background Art

[0002] Although the construction of hydropower station dams helps to stabilize and increase the power supply, it also brings challenges to inland waterway transportation. Dams block the waterway, affecting the continuous navigation of ships and increasing the cost and time of cargo transshipment. In order to overcome this obstacle, ship lifts are widely used as a solution to vertically lift ships through dams. Since the 1990s, China's ship lift construction has developed rapidly, and more than 60 ship lifts have been built, mainly distributed in Zhejiang, Hunan, Hubei, Guizhou, Yunnan, Fujian and other provinces.

[0003] The working principle of a ship lift is similar to that of an elevator. It can lift or lower the entire ship together with its cargo to the water level on the other side of the dam, thus enabling continuous navigation. In China, especially in areas with abundant hydropower resources and high shipping demand, the construction and use of ship lifts has become a norm.

[0004] However, due to technical limitations and safety considerations, ship lifts have some limitations in practical applications. For example, in order to ensure the safety of ships and equipment, the maximum draft of the ship is restricted during design. This restriction means that the ship cannot operate at full load, which affects its economic benefits. In addition, the speed of entering and exiting the ship container is also controlled, which may further affect transportation efficiency.

[0005] How to improve the operating efficiency of the ship lift? Practitioners have been working hard to explore. Under the premise of ensuring safety, there are only a few aspects to improve the operating efficiency of the ship lift. The first is to maintain and manage the ship lift, keep the equipment performance stable, reduce the operating failure rate, and ensure the ship passing rate; the second is to optimize the scheduling system, improve equipment performance, reduce waiting time, and enable ships to pass through the ship lift faster; the third is to increase the ship loading capacity and improve the single ship carrying efficiency of ships passing through the lock. For the 500-ton standard ship in Wujiang, Guizhou, the depth reaches 2.8 meters, which is much more than the 1.9-meter draft limited by the ship lift. Therefore, appropriately increasing the ship loading capacity can also ensure the safe navigation of the ship.

[0006] Since the ship needs the engine to provide power to drive the propeller on the ship when entering and exiting the ship lift, the stern will sink to a certain extent when the propeller pushes the ship forward, thereby increasing the draft and posing the risk of the propeller touching the ship box. Therefore, how to appropriately increase the ship load while preventing the draft of the overloaded ship from increasing when entering and exiting the ship box is a technical problem to be solved by the present invention. Summary of the invention

[0007] The present invention is intended to provide a ship towing device on a ship lift box, which solves the problem in the prior art of how to prevent the draft of the ship from increasing when the ship enters and exits the ship box when the ship is properly loaded.

[0008] A ship towing device on a ship lifting box in the present invention comprises a towing trolley that moves on the deck of the ship lifting box, a trolley driving mechanism that drives the towing trolley to move, a towing rod slidably arranged on the towing trolley, two ends of the towing rod are provided with connecting parts that can be detachably connected to the ship, and the towing rod is connected to a towing rod driving mechanism that drives it to slide.

[0009] Furthermore, the towing trolley includes a frame and a support frame, the trolley driving mechanism drives the frame to move, the support frame is connected to the top of the frame, and the towing rod is slidably arranged on the support frame. The towing trolley is arranged into two parts, the frame and the support frame, for easy inspection and maintenance.

[0010] Furthermore, the device also includes a track installed on the deck, a trolley driving mechanism wheel is provided at the bottom of the trolley, and the trolley driving mechanism drives the trolley driving wheel to move on the track. The track limits the walking track of the trolley driving wheel, so that the driving direction of the ship towing device is more stable.

[0011] Furthermore, a track-clamping wheel is provided at the bottom of the trolley, and the track-clamping wheel is located below the top edge of the track. By adjusting the tension of the track-clamping wheel tensioning rod, the track-clamping wheel cooperates with the trolley driving wheel to run on the track more stably, thereby increasing the friction between the trolley driving wheel and the track, and preventing the trolley driving wheel from slipping off the track during driving.

[0012] Furthermore, the support frame is provided with a towing top groove, the towing top rod is located in the towing top groove, the towing top rod driving mechanism includes a towing top rod driving wheel and a variable frequency motor, the variable frequency motor is connected to a gearbox, the variable frequency motor drives the towing top rod driving wheel to operate through the gearbox, and the towing top rod driving wheel drives the towing top rod to slide in the towing top groove through meshing transmission or friction transmission.

[0013] Furthermore, a detachable cover plate is provided on the upper part of the ejector rod slot, and the function of the cover plate is to limit the ejector rod to slide stably in the slot and prevent it from tilting upward and falling out of the ejector rod slot.

[0014] Furthermore, the towing top rod driving mechanism also includes a guide wheel, which is in rolling contact with the towing top rod. The guide wheel provides guidance for the towing top rod and changes sliding friction into rolling friction, which is conducive to smoother sliding of the towing top rod in the towing top groove during sliding operation.

[0015] Furthermore, the guide wheel includes a tensioning device, and the pressure of the guide wheel on the ejector rod is increased by adjusting the tensioning device, thereby increasing the friction between the ejector rod and the guide wheel, ensuring that the ejector rod does not slip when sliding.

[0016] Furthermore, a roller is provided at the bottom of the dragging top trough, and the dragging top rod is supported on the roller.

[0017] Furthermore, the driving wheel of the drag top rod is located on one side of the drag top groove, and the guide wheel is located on the other side of the drag top groove.

[0018] Furthermore, the dragging top rod is in the form of a hollow cuboid, which has a regular shape, is easy to install and implement, and has strong working stability.

[0019] The working principle of this scheme is: the ship approaches the ship holding box, turns off the propulsion propeller, prepares for the ship to enter the ship holding box, operates the trolley driving mechanism to move the towing trolley close to the bow of the ship, drives the towing rod driving mechanism to slide and extend toward the ship to connect the towing rod and the connecting parts on the ship to each other, and then operates the towing trolley to tow the ship to the other side of the ship holding box. After the towing trolley reaches the stop point and cannot move forward, the towing rod driving mechanism is controlled to move the towing rod back and forth in the towing groove, and the docking position of the ship in the ship holding box is adjusted to make the distance between the front and rear of the ship and the two sides of the ship holding box balanced.

[0020] When the ship sails out of the ship holding box, the towing trolley is controlled to move to the rear of the stern, and the towing rod is controlled to move toward the stern, the towing rod is connected to the connecting parts on the ship, and the towing trolley is controlled to push the ship out of the ship holding box. After the towing trolley reaches the stop point and cannot move forward, the towing rod driving mechanism is controlled to make the towing rod push the ship and move, so as to completely push the ship out of the ship holding box.

[0021] In the process of assisting the ship to enter and exit the ship box by adopting this solution, there is no need for the propeller to drive the ship to travel. The external force pulls the ship in and out of the ship box, which avoids the phenomenon of the stern sinking and increasing the draft depth when the propeller is running, and eliminates the risk of the propeller touching the ship box when it is running (as well as the fluctuation of the water surface of the ship box caused by the rotation of the propeller). In this case, this solution has the following beneficial technical effects:

[0022] 1. Increase loading capacity and improve economic benefits. The ship towing device can tow and push the ship steadily. In comparison, the ship can increase the loading capacity under the premise of safety, improve transportation efficiency, especially economic benefits.

[0023] 2. Shorten the time for ships to enter and exit the container ship and improve the passage efficiency. The time for ships to enter and exit the container ship is affected by many factors, especially the great test of the captain's skills and psychology. Subjective factors have a greater impact. After unified towing by external force, it can solve the problem of timeout for some ships to enter and exit the container caused by subjective factors.

[0024] 3. There is no need for a driver to drive the ship when the ship enters or exits the ship container, thus avoiding the safety risks that may exist due to human error, such as collision caused by improper control of speed or direction.

[0025] 4. The ship's speed and direction can be controlled by the ship's towing device, which can effectively prevent the ship from colliding with the ship-carrying box.

[0026] 5. The propeller does not rotate during the entire process, eliminating a source of water surface fluctuations that may increase the ship's draft. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of a ship towing device on a ship lift box according to an embodiment of the present invention;

[0028] Figure 2 for Figure 1 Cross-section view along the AA direction;

[0029] Figure 3 This is a side view of a ship towing device on a ship lifting box according to Embodiment 1 of the present invention, combined with a ship and a ship lifting box. DETAILED DESCRIPTION

[0030] The following is further described in detail through specific implementation methods:

[0031] The figure marks in the drawings of the specification include: track 1, track wheel 2, trolley driving wheel 3, motor 4, frame 5, drag top groove 6, support frame 7, drag top rod driving wheel 8, roller 9, connecting part 10, drag top rod 11, guide wheel 12, anti-slip groove 13, cover plate 14, countersunk bolt 15.

[0032] Embodiment 1 is basically as attached Figure 1 and Figure 2 As shown: a ship towing device on a ship box of a ship lift, comprising a track 1 installed on the deck of the ship box, a towing trolley for traveling is arranged on the track 1, and the towing trolley comprises a frame 5 and a support frame 7, and a trolley driving wheel 3 is arranged at the bottom of the frame 5, and the trolley driving wheel 3 is driven by a motor 4. The frame 5 is connected to a track-clamping wheel 2, and the track-clamping wheel 2 is located below the top edge of the track 1. By operating the pull rod on the track-clamping wheel 2, the track-clamping wheel 2 cooperates with the trolley driving wheel 3 to travel on the track 1 more stably, thereby increasing the friction between the trolley driving wheel 3 and the track 1, and preventing the trolley driving wheel 3 from slipping out of the track 1 during driving.

[0033] The support frame 7 and the vehicle frame 5 are connected by at least four rectangular array countersunk bolts 15. The support frame 7 is provided with a dragging top groove 6 with two ends communicating with each other. A rectangular dragging top rod 11 is provided in the dragging top groove 6. The dragging top groove 6 matches the shape of the dragging top rod 11. The support frame 7 is provided with a cover plate 14 located above the dragging top groove 6. One side of the cover plate 14 is rotatably connected to the support frame 7 through a hinge. The other side of the cover plate 14 is provided with a through hole. A screw is provided in the through hole. The screw is threadedly connected to the support frame 7. A roller 9 is provided at the bottom of the dragging top groove 6. The roller 9 supports the dragging top rod 11. A rotating dragging top rod driving wheel 8 is provided in the side wall of one side of the dragging top groove 6. The dragging top rod driving wheel 8 is a rubber surface roller. The side wall of the dragging top rod 11 is provided with an anti-skid pattern 13 to increase the friction of the roller. The power of the dragging top rod driving wheel 8 is provided by a variable frequency motor. The variable frequency motor is connected to a gearbox. The variable frequency motor drives the dragging top rod driving wheel 8 to run through the gearbox. After the driving wheel 8 of the towing top rod rotates, the towing top rod 11 is driven to slide in the towing top groove 6. When the driving wheel 8 of the towing top rod does not rotate, the towing top rod 11 stays stably in the towing top groove 6. A rotating guide wheel 12 is provided in the side wall of the other side of the towing top groove 6, and the side wall of the towing top rod 11 is in rolling contact with the guide wheel 12. Both ends of the towing top rod 11 are provided with connecting pieces 10 that are detachably connected to special connecting pieces 10 on the ship. The walking direction of the towing top trolley and the sliding direction of the towing top rod 11 are the same as the entry and exit direction of the ship in the ship-bearing box.

[0034] Specific implementation process Figure 3 As shown, the ship approaches the ship holding box and stops the propeller to prepare for the ship to enter the ship holding box. The trolley driving mechanism drives the towing trolley to one side of the ship holding box close to the bow of the ship. The driving mechanism of the towing rod 11 drives the towing rod 11 to slide toward the ship and then connects the towing rod 11 and the connecting piece 10 on the ship to each other. Then the towing trolley is driven to the other side of the ship holding box. After the towing trolley reaches the stop point and cannot move forward, the towing rod driving mechanism is controlled to move the towing rod 11 back and forth in the towing groove 6, and the docking position of the ship in the ship holding box is adjusted to make the ship dock at the specified position.

[0035] When the ship sails out of the ship box, the towing trolley is driven to one side of the ship box again, that is, to the rear of the stern of the ship, and the connecting piece 10 on the towing rod 11 is connected with the connecting piece on the ship, so that the towing trolley drives to the other side of the ship box. When the towing trolley reaches the stop point and cannot move forward, the towing rod driving mechanism is controlled to make the towing rod 11 push the ship and move, so that the ship is completely pushed out of the ship box.

[0036] When this solution is used to assist ships in entering and exiting the ship box, the propeller can be stopped from running, and the ship's loading capacity can be increased, thereby improving transportation efficiency, especially economic benefits. For a 500-ton standard ship in Wujiang, Guizhou, an additional 10 cm of draft can increase the loading capacity by about 50 tons. On the basis of the 1.9-meter limit, an additional 20 cm of draft can increase the loading capacity by 100 tons. At the current transportation market price, a single ship from Zunyi, Guizhou to Fuling, Chongqing can increase the income by more than 8,000 yuan per trip. At this time, the ship's draft is 2.1 meters, and it is safe for ships with a maximum draft of 2.8 meters to sail.

[0037] Embodiment 2 is different from Embodiment 1 in that both the trolley and the ejector rod are driven by gear rack engagement.

Claims

1. A ship towing device on a ship lift box, characterized in that: The utility model comprises a towing top trolley which moves on the deck of the ship-carrying box, a trolley driving mechanism which drives the towing top trolley to move, a towing top rod which is slidably arranged on the towing top trolley, two ends of the towing top rod are provided with connecting pieces which can be detachably connected with the ship, and the towing top rod is connected to a towing top rod driving mechanism which drives the towing top rod to slide.

2. A ship towing device on a ship lift box according to claim 1, characterized in that: The towing top trolley comprises a vehicle frame and a supporting frame. The trolley driving mechanism drives the vehicle frame to move. The supporting frame is connected to the top of the vehicle frame, and the towing top rod is slidably arranged on the supporting frame.

3. The ship towing device on the ship lifting box according to claim 2 is characterized in that: The device also includes a track installed on the deck, a trolley driving wheel is arranged at the bottom of the trolley, and the trolley driving mechanism drives the trolley driving wheel to move on the track.

4. The ship towing device on the ship lifting box according to claim 3 is characterized in that: The bottom of the trolley is also provided with a track-clamping wheel, which is located below the edge of the track.

5. A ship towing device on a ship lift box according to any one of claims 2 to 4, characterized in that: The support frame is provided with a drag top groove, the drag top rod is located in the drag top groove, the drag top rod driving mechanism includes a drag top rod driving wheel and a variable frequency motor, the variable frequency motor is connected to a gearbox, the variable frequency motor drives the drag top rod driving wheel to operate through the gearbox, and the drag top rod driving wheel drives the drag top rod to slide in the drag top groove through meshing transmission or friction transmission.

6. The ship towing device on the ship lifting box according to claim 5, characterized in that: The top of the drag roof trough is provided with a detachable cover plate.

7. The ship towing device on the ship lift box according to claim 6, characterized in that: The towing top rod driving mechanism also includes a guide wheel, and the guide wheel is in rolling contact with the towing top rod.

8. The ship towing device on the ship lift box according to claim 7, characterized in that: A roller is arranged at the bottom of the dragging top groove, and the dragging top rod is supported on the roller.

9. The ship towing device on the ship lift box according to claim 8, characterized in that: The driving wheel of the dragging top rod is located on one side of the dragging top groove, and the guide wheel is located on the other side of the dragging top groove.

10. A ship towing device on a ship lift box according to any one of claims 1 to 4 and 6 to 8, characterized in that: The dragging rod is in the shape of a cuboid.

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