Novel inclined frame trolley system for small ship

Abstract

The utility model belongs to the technical field of mechanical slideway equipment, and particularly discloses a novel inclined frame trolley system for a small ship, which comprises inclined frame trolley main bodies arranged at the front end and the rear end of the ship, the inclined frame trolley main body positioned at the front end of the ship is a bow trolley, and the inclined frame trolley main body positioned at the rear end of the ship is a stern trolley; one or more bow cars and one or more stern cars are arranged according to ship load characteristics; each inclined frame trolley body comprises an upper layer structure, a lower layer structure and a supporting structure arranged between the upper layer structure and the lower layer structure. A conventional integral wedge-shaped shipway is replaced by the inclined frame trolley set. The structure is light, and economical efficiency is good; the transverse moving trolley can conveniently pass through the inclined frame trolley, and the arrangement space of the slipway can be saved; the upper surface of the trolley is a horizontal plane through lifting, namely on a slope slide way, in structural design of the trolley, the design is unique and novel, use is convenient, and the equipment maintenance amount is small; and the flexibility is higher.

Description

A novel slant-mounted trolley system for small vessels Technical Field

[0001] This utility model relates to the field of mechanical slide equipment technology, specifically a novel inclined trolley system for small ships. Background Technology

[0002] A slipway is a structure extending from the shore into the water. It has a certain slope and is equipped with tracks, using mechanical equipment to pull vessels ashore or launch them into the water. Mechanized equipment—wedge-shaped boat frames and their pulling systems—is installed on the slipway. Wedge-shaped boat frames are also classified as longitudinal or transverse, depending on the slipway design. The wedge-shaped boat frame surface is horizontal, and its cross-section along the track direction is wedge-shaped. The height difference between its two ends matches the slope of the slipway's foreground, as shown in Figure 1.

[0003] However, this wedge-shaped hull frame system is typically supported on rails by multiple sets of wheels, with the wheels arranged to cover the entire length of the hull frame, which is no less than the length of the vessel. The vessel, mounted on the wedge-shaped hull frame, is moved into the water or pulled from the water to shore by a traction system of steel cables. This completes the launching and mooring operations. The structure is bulky and lacks flexibility. Summary of the Invention

[0004] The purpose of this invention is to provide a novel inclined trolley system for small ships to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel inclined frame trolley system for small vessels, comprising inclined frame trolley bodies disposed at the bow and stern of the vessel, wherein the inclined frame trolley body located at the bow of the vessel is a bow trolley, and the inclined frame trolley body located at the stern of the vessel is a stern trolley; one or more bow trolleys and stern trolleys are respectively provided, depending on the vessel's load characteristics; each inclined frame trolley body includes an upper structure, a lower structure, and a support structure disposed between the upper structure and the lower structure.

[0006] Preferably, the upper structure includes a rectangular platform, an end plate, and a concave spherical support surface; the end plate is disposed on the side of the rectangular platform, and a connecting hole is formed in the middle of the end plate; the concave spherical support surface is symmetrically disposed below the rectangular platform. The connecting hole and the concave spherical support surface on the end plate are used to connect the support structure with the lower structure.

[0007] Preferably, the lower structure includes a frame structure, a wheel assembly structure, and an L-shaped slot; the wheel assembly structure is located below the frame structure, and the L-shaped slot is located on the side of the frame structure.

[0008] Preferably, the support structure includes a pull plate, a pin, a hydraulic cylinder, and a spherical top surface of a piston rod. The pull rod is inserted into an L-shaped slot, and its top end is connected to a connecting hole via a pin. The hydraulic cylinder is mounted on the frame structure, and the spherical top surface of the piston rod is located at the output end of the hydraulic cylinder, engaging with a concave spherical support surface. The pull plate structure can move up and down within the slot, serving a guiding function and ensuring the pull plate structure remains vertical. Hydraulic interconnection achieves automatic pressure balance, ensuring the upper surface remains horizontal.

[0009] Preferably, the hydraulic cylinders are provided in several groups, with two hydraulic cylinders in each group, and a wheel assembly structure is provided on both the left and right sides of each group of hydraulic cylinders. The wheel assembly structure adopts the form of balance wheels, with the front and rear pairs resting on the track respectively.

[0010] Preferably, the wheel assembly structure includes a large crossbeam, a small flat crossbeam, a crossbeam shaft, wheel bodies, and U-shaped holes formed in the large crossbeam. The large crossbeam is fixed to the frame structure. The small flat crossbeams are symmetrically arranged inside the large crossbeam and connected to the large crossbeam via the crossbeam shaft. The wheel bodies are located at both ends of the small flat crossbeams. The small balance beam can rotate around the balance beam shaft, ensuring even load distribution for each pair of wheels under load. The wheel bodies are double-flanged wheels, and a pair of wheel bodies are connected to the small balance beam via wheel shafts. A sliding bearing connects the wheel bodies to the wheel shafts. The wheel bodies are rotatable.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention uses a slant frame trolley assembly (bow and stern trolleys) instead of the conventional integral wedge-shaped ship frame. It is lightweight and economical; it also facilitates the movement of the lateral trolleys between the slant frame trolleys, saving space on the slipway; the trolleys themselves are designed with lifting mechanisms, ensuring the upper surfaces of the slant frame trolley assembly are on the same horizontal plane on the inclined slide, a unique and novel design that is easy to use, requires minimal maintenance, and offers greater flexibility. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the existing inclined frame trolley structure;

[0014] Figure 2 is a schematic diagram of the side structure of this utility model;

[0015] Figure 3 is a schematic diagram of the overall structure of this utility model;

[0016] Figure 4 is a schematic diagram of the working structure of this utility model.

[0017] In the diagram: 1. Upper structure; 100. Rectangular platform; 101. End plate; 102. Concave spherical support surface; 2. Support structure; 200. Pull plate; 201. Pin shaft; 202. Hydraulic cylinder; 203. Spherical top surface of piston rod; 3. Lower structure; 300. Frame structure; 301. Wheel assembly structure; 3011. Main crossbeam; 3012. Small balance beam; 3013. Balance beam shaft; 3014. Wheel body; 3015. U-shaped hole; 302. L-shaped slot. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] Please refer to Figures 2-4. This utility model provides a technical solution: a novel inclined frame trolley system for small ships, including inclined frame trolley bodies located at the front and rear of the ship. The inclined frame trolley body located at the front of the ship is the bow trolley, and the inclined frame trolley body located at the rear of the ship is the stern trolley. One or more bow trolleys and stern trolleys are provided, depending on the ship's load characteristics. Each inclined frame trolley body includes an upper structure 1, a lower structure 3, and a support structure 2 located between the upper structure 1 and the lower structure 3.

[0022] The upper structure 1 includes a rectangular platform 100, an end plate 101, and a concave spherical support surface 102. The end plate 101 is disposed on the side of the rectangular platform 100, and a connecting hole is provided in the middle of the end plate 101. The concave spherical support surface 102 is symmetrically disposed below the rectangular platform 100. The connecting hole on the end plate 101 and the concave spherical support surface 102 are used to connect the support structure 2 with the lower structure 3.

[0023] The lower structure 3 includes a frame structure 300, a wheel assembly structure 301, and an L-shaped slot 302; the wheel assembly structure 301 is located below the frame structure 300, and the L-shaped slot 302 is located on the side of the frame structure 300.

[0024] The support structure 2 includes a pull plate 200, a pin 201, a hydraulic cylinder 202, and a piston rod spherical top surface 203. The pull rod is inserted into an L-shaped slot 302, and its top end is connected to a connecting hole via the pin 201. The hydraulic cylinder 202 is mounted on the frame structure 300, and the piston rod spherical top surface 203 is located at the output end of the hydraulic cylinder 202, engaging with a concave spherical support surface 102. The pull plate 200 can move up and down within the slot, serving a guiding function to ensure that the pull plate 200 remains vertical.

[0025] The hydraulic cylinders 202 are arranged in several groups, with two hydraulic cylinders in each group. Each group of hydraulic cylinders 202 has a wheel assembly structure 301 on both the left and right sides. The wheel assembly structure 301 adopts the form of balance wheels, with the front and rear pairs resting on the track respectively. Through hydraulic series connection, automatic pressure balance is achieved to ensure that the upper plane is always horizontal.

[0026] The wheel assembly structure 301 includes a large crossbeam 3011, a small flat crossbeam, a crossbeam shaft, wheel bodies 3014, and U-shaped holes 3015 formed on the large crossbeam 3011. The large crossbeam 3011 is fixed to the frame structure 300. The small flat crossbeams are symmetrically arranged inside the large crossbeam 3011 and connected to the large crossbeam 3011 through the crossbeam shaft. The wheel bodies 3014 are located at both ends of the small flat crossbeams. The small balance beam 3012 can rotate around the balance beam shaft 3013, ensuring uniform load distribution for each pair of wheels under load. The wheel bodies 3014 are double-flanged wheels. A pair of wheel bodies 3014 are connected to the small balance beam 3012 through wheel shafts, with sliding bearings between the wheel bodies 3014 and the wheel shafts. The wheel bodies 3014 are rotatable.

[0027] In summary, the slant trolley system mainly consists of a bow trolley and a stern trolley. The bow and stern trolleys have similar structures; during operation, the stern trolley's hydraulic cylinder 202 has a higher lifting stroke than the bow trolley. The positions of the bow and stern trolleys can be adjusted according to the ship type.

[0028] Depending on the ship's load characteristics, the bow and stern cars can be configured as two units, which need to be connected in groups and each group also needs to be hydraulically connected to ensure that each group is evenly loaded.

[0029] The hydraulic pump station is set up as a mobile station, equipped with a special vehicle, and serves as the initial oil supply and maintenance compensation oil supply for hydraulic cylinder 202.

[0030] The inclined trolley system runs on several inclined tracks, with the width of the trolley defined along the track direction and the length of the trolley defined perpendicular to the track direction.

[0031] Each inclined frame trolley is divided into an upper structure 1 and a lower structure 3. The upper structure 1 is a steel frame with steel plates on the upper surface, forming a rectangular platform 100. The end plates 101 of the upper structure 1 have openings in the middle, corresponding to the circular holes in the upper semi-circular structure of the pull plate 200. The pull plate 200 is connected to the upper structure 11 via a pin 201, allowing the upper structure 1 to rotate relative to the pin 201. Two sets of concave spherical support surfaces 102 are symmetrically arranged along the length of the back of the rectangular platform 100, engaging with the spherical top surface 203 of the piston rod of the hydraulic cylinder 202 in the lower structure 3. The upper structure 1 is supported by the paired hydraulic cylinders 202 of the lower structure 3 and can rotate relative to the lower structure 1 around the pin 201 as a hinge point.

[0032] The lower structure 3 consists of a frame structure 300, several pairs of hydraulic cylinders 202, and several pairs of wheel sets 301. The frame structure 300 has inverted L-shaped slots at the midpoints of both ends along its length, allowing the pull plate 200 to move up and down within these slots, providing guidance and ensuring the pull plate 200 remains vertical. Several sets of the two pairs of hydraulic cylinders 202 are evenly distributed on the frame structure 300. These pairs of cylinders are connected in series via hydraulic circuits, and based on the principle of equal pressure, the load on each cylinder 202 of the trolley is evenly distributed. That is, when the trolley is on a slope track, due to the connected hydraulic circuits, hydraulic oil flows to the cylinders 202 at relatively lower points on the slope, causing their piston rods to rise, while the cylinders 202 at relatively higher points on the slope cause their piston rods to descend until the piston rods are at the same elevation, simultaneously supporting the upper structure 1 and the ship's load. At this time, the rectangular platform 100 of the upper structure 1 is horizontal. A wheel assembly structure 301 is installed on the left and right sides of each hydraulic cylinder 202. The wheel assembly structure 301 adopts the form of balance wheels, with a pair at the front and rear resting on the track. The wheel assembly structure 301 consists of a large crossbeam 3011, two small balance beams 3012, two shafts for the small balance beams 3012, and four wheel bodies 3014. The large crossbeam 3011 has a box-shaped cross section with downward U-shaped holes 3015 at both ends along its length. The two small balance beams 3012 are connected by shafts. Wheels are installed at both ends of the small balance beams 3012. The small balance beams 3012 can rotate around their shafts, ensuring that the load on each pair of wheel bodies 3014 is evenly distributed when under load. The wheel bodies 3014 are double-flanged wheels. A pair of wheel bodies 3014 are connected to the small balance beams 3012 via wheel shafts, and a sliding bearing connects the wheel bodies 3014 to the wheel shafts. The main body of the wheel is 3014 and can rotate.

[0033] The difference between the bow and stern cars is that the stroke of the hydraulic cylinder 202 in the stern car is greater than that in the bow car. Furthermore, double bow or double stern cars can be manufactured according to the ship's load requirements.

[0034] It is worth noting that the entire device is traction-controlled by a winch, and the main control console controls its hydraulic system and traction. Since the matching electrical control system is a common device and belongs to existing mature technology, it will not be described in detail here.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel inclined trolley system for small vessels, characterized in that: It includes the main body of the inclined frame trolley set at the front and rear of the ship. The main body of the inclined frame trolley at the front of the ship is the bow trolley, and the main body of the inclined frame trolley at the rear of the ship is the stern trolley. There is one or more bow trolleys and stern trolleys, which are set according to the load characteristics of the ship. Each inclined frame trolley main body includes an upper structure (1), a lower structure (3), and a support structure (2) set between the upper structure (1) and the lower structure (3).

2. The novel inclined trolley system for small ships according to claim 1, characterized in that: The upper structure (1) includes a rectangular platform (100), an end plate (101) and a concave spherical support surface (102); the end plate (101) is located on the side of the rectangular platform (100), and a connecting hole is provided in the middle of the end plate (101); the concave spherical support surface (102) is symmetrically located below the rectangular platform (100).

3. A novel inclined trolley system for small vessels according to claim 1, characterized in that: The lower structure (3) includes a frame structure (300), a wheel assembly structure (301), and an L-shaped slot (302); the wheel assembly structure (301) is located below the frame structure (300), and the L-shaped slot (302) is located on the side of the frame structure (300).

4. A novel inclined trolley system for small vessels according to claim 1, characterized in that: The support structure (2) includes a pull plate (200), a pin (201), a hydraulic cylinder (202), and a piston rod spherical top surface (203). The pull rod is inserted into an L-shaped slot (302), and the top of the pull rod is connected to the connecting hole through the pin (201). The hydraulic cylinder (202) is mounted on the frame structure (300), and the piston rod spherical top surface (203) is mounted on the output end of the hydraulic cylinder (202). The piston rod spherical top surface (203) cooperates with the concave spherical support surface (102).

5. A novel inclined trolley system for small vessels according to claim 4, characterized in that: The hydraulic cylinder (202) is provided in several groups, with two hydraulic cylinders in each group, and wheel sets (301) are provided on both the left and right sides of each hydraulic cylinder (202).

6. A novel inclined trolley system for small vessels according to claim 3, characterized in that: The wheel assembly structure (301) includes a large crossbeam (3011), a small flat crossbeam, a crossbeam shaft, a wheel body (3014), and a U-shaped hole (3015) opened on the large crossbeam (3011). The large crossbeam (3011) is fixed to the frame structure (300), the small flat crossbeam is symmetrically arranged inside the large crossbeam (3011) and connected to the large crossbeam (3011) through the crossbeam shaft, and the wheel body (3014) is arranged at both ends of the small flat crossbeam.

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