A variable angle testing device for a marine crane

Abstract

The application discloses a luffing angle testing device for a marine crane, which comprises an upper base plate for mounting the marine crane, a lower base plate, a first end of the lower base plate being rotationally connected to a first end of the upper base plate, an oil cylinder, the oil cylinder being arranged between a second end of the upper base plate and a second end of the lower base plate, one end of the oil cylinder being connected to the upper base plate and the other end of the oil cylinder being connected to the lower base plate, and the oil cylinder being used for driving the upper base plate to rotate relative to the lower base plate. The application can adjust the inclination angle, thereby meeting the testing requirements of the marine crane under different sea state levels and improving the universality.

Description

Technical Field

[0001] This application relates to the field of marine crane luffing test technology, and in particular to a marine crane luffing angle test device. Background Technology

[0002] Marine cranes, as specialized equipment operating in marine environments, face far more complex working conditions than those on land. Affected by waves, sea winds, and other factors, cranes operate in tilted conditions. This tilting condition poses a severe challenge to the crane's lifting capacity, slewing performance, and structural stability.

[0003] To verify whether the performance indicators of marine cranes meet the technical requirements under tilting conditions, an angle testing device is typically used for simulation testing. In the existing technology, most common marine crane tilting angle testing devices are fixed structures, meaning that their tilting angle is determined after manufacturing and cannot be adjusted.

[0004] Existing angle testing devices can only simulate fixed inclination angles. However, different sea state grades have different requirements for the inclination angle of the hull. When different angles need to be tested, the existing devices cannot meet the testing requirements, resulting in poor versatility and applicability of the testing devices. Utility Model Content

[0005] The purpose of this application is to provide a test device for the luffing angle of a marine crane, which can adjust the tilt angle to meet the test requirements of marine cranes under different sea state levels and improve versatility.

[0006] To achieve the above objectives / to solve the above technical problems, this application adopts the following technical solution:

[0007] In a first aspect, this application provides a test device for the luffing angle of a marine crane, comprising:

[0008] Upper base plate, used for mounting marine cranes;

[0009] The lower base plate is rotatably connected to the first end of the upper base plate.

[0010] The hydraulic cylinder is located between the second end of the upper base plate and the second end of the lower base plate, with one end of the hydraulic cylinder connected to the upper base plate and the other end connected to the lower base plate. The hydraulic cylinder is used to drive the upper base plate to rotate relative to the lower base plate.

[0011] Compared with existing technologies, the technical effects achieved by this solution are as follows: The upper base plate can be rotated relative to the lower base plate via a hydraulic cylinder, enabling adjustment of the tilt angle of the testing device. By adjusting the cylinder stroke according to different technical requirements, tilt angles from 0 degrees to a certain range can be achieved, thus meeting the testing requirements of marine cranes under different sea state conditions and improving versatility.

[0012] Furthermore, a cylinder support plate is provided at the second end of the lower base plate. The cylinder support plate is located on the side of the lower base plate away from the upper base plate, and the cylinder is hinged to the cylinder support plate through a first pin.

[0013] Furthermore, the lower base plate has a through hole corresponding to the position of the hydraulic cylinder, and the piston rod end of the hydraulic cylinder passes through the through hole and connects to the upper base plate.

[0014] Furthermore, the upper base plate is provided with a connecting part corresponding to the position of the oil cylinder, and the connecting part is rotatably connected to the piston rod end of the oil cylinder.

[0015] Furthermore, the connecting part is hinged to the piston rod end of the oil cylinder via a second pin.

[0016] Furthermore, the hydraulic cylinder is located at the middle of the second end of the lower base plate.

[0017] Furthermore, the upper base plate is hinged to the lower base plate via a third pin, and the axis of the third pin is perpendicular to the pushing direction of the hydraulic cylinder.

[0018] Furthermore, it also includes: a base, with the lower base plate fixedly connected to the base.

[0019] Compared with the prior art, the beneficial effects achieved by this application are as follows:

[0020] 1. By driving the upper base plate to rotate relative to the lower base plate through the hydraulic cylinder, the tilt angle of the test device can be adjusted, thereby meeting the testing requirements of marine cranes under different sea state levels and improving versatility. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a front view of an embodiment of the marine crane luffing angle testing device provided in this application.

[0023] Figure 2This is a side view of an embodiment of the marine crane luffing angle testing device provided in this application.

[0024] Figure 3 This is a schematic diagram of an embodiment of the marine crane luffing angle testing device provided in this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Marine crane; 2. Upper base plate; 21. Connecting part; 3. Lower base plate; 31. Hydraulic cylinder support plate; 32. First pin; 33. Through hole; 34. Third pin; 4. Base; 5. Hydraulic cylinder. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0028] This embodiment provides a test device for the luffing angle of a marine crane 1. The test device is used to simulate the working condition of the marine crane 1 when the ship is tilted, and can adjust the tilting angle according to the test requirements.

[0029] like Figure 1 As shown, in one specific embodiment, the variable angle testing device for the marine crane 1 includes an upper base plate 2, a lower base plate 3, and a hydraulic cylinder 5; wherein, the upper base plate 2 is used to mount the marine crane 1; the lower base plate 3 has its first end rotatably connected to the first end of the upper base plate 2; the hydraulic cylinder 5 is located between the second end of the upper base plate 2 and the second end of the lower base plate 3, with one end of the hydraulic cylinder 5 connected to the upper base plate 2 and the other end connected to the lower base plate 3, and the hydraulic cylinder 5 is used to drive the upper base plate 2 to rotate relative to the lower base plate 3.

[0030] Specifically, the side of the upper base plate 2 away from the lower base plate 3 is used to install the marine crane 1, which is fixed to the upper base plate 2 with bolts. The lower base plate 3 is set parallel to the ground. When the luffing angle test device is in its initial state, the upper base plate 2 and the lower base plate 3 are parallel, and the tilt angle is 0 degrees.

[0031] Specifically, the upper base plate 2 has a first end and a second end that are arranged opposite to each other, and the lower base plate 3 has a first end and a second end that are arranged opposite to each other. The first end of the upper base plate 2 and the first end of the lower base plate 3 are hinged by a third pin 34, and the upper base plate 2 can rotate relative to the lower base plate 3.

[0032] like Figure 2 and Figure 3As shown, further, a cylinder support plate 31 is provided at the second end of the lower base plate 3. The cylinder support plate 31 is located on the side of the lower base plate 3 away from the upper base plate 2. The cylinder 5 is hinged to the cylinder support plate 31 via a first pin 32. A through hole 33 is provided on the lower base plate 3 corresponding to the position of the cylinder 5. The piston rod end of the cylinder 5 passes through the through hole 33 and connects to the upper base plate 2. A connecting part 21 is provided on the upper base plate 2 corresponding to the position of the cylinder 5. The connecting part 21 is hinged to the piston rod end of the cylinder 5 via a second pin.

[0033] Specifically, the cylinder support plate 31 is configured to be integrally formed with the lower base plate 3, and the cylinder 5 is hinged to the cylinder support plate 31 via the first pin 32. When the test device is in its initial state, the upper base plate 2 is in a horizontal position, and the cylinder 5 is in a vertical position. When the test device starts to move, the piston rod of the cylinder 5 extends, pushing the second end of the upper base plate 2 to rotate relative to the lower base plate 3. When the upper base plate 2 begins to tilt, the connection point between the piston rod of the cylinder 5 and the connection part 21 of the upper base plate 2 moves not only vertically upward, but also horizontally towards the first end of the lower base plate 3. Since both ends of the cylinder 5 are hinged, the piston rod end of the cylinder 5 rotates back towards the first end of the lower base plate 3 to ensure that the direction of piston rod pushing is as straight as possible with the direction of piston rod force, thereby reducing the lateral force on the cylinder 5, protecting the structure of the cylinder 5, and improving the service life and reliability of the cylinder 5.

[0034] Furthermore, the hydraulic cylinder 5 is located at the middle of the second end of the lower base plate 3.

[0035] Specifically, the upper base plate 2 and the lower base plate 3 are correspondingly arranged, and the hydraulic cylinder 5 is located at the middle of the second end of the lower base plate 3. This ensures that when the hydraulic cylinder 5 pushes the upper base plate 2 to rotate, the upper base plate 2 will only be subjected to the torque of rotation around the third pin 34, and will not be subjected to the torsional torque. This ensures the stability of the upper base plate 2.

[0036] Furthermore, the upper base plate 2 is hinged to the lower base plate 3 via a third pin 34, and the axial direction of the third pin 34 is perpendicular to the pushing direction of the hydraulic cylinder 5.

[0037] Specifically, the axial direction of the third pin 34 is perpendicular to the pushing direction of the hydraulic cylinder 5 in the initial state of the test device, and the axial direction of the third pin 34 is also perpendicular to the pushing direction of the hydraulic cylinder 5 when it is in the tilted position. The axial direction of the third pin 34 is perpendicular to the pushing direction of the hydraulic cylinder 5, ensuring that the pushing direction of the hydraulic cylinder 5 is always perpendicular to the rotation direction of the upper base plate 2, thus preventing the upper base plate 2 from twisting or translating during rotation.

[0038] Furthermore, the variable angle test device for marine crane 1 also includes a base 4, with the lower base plate 3 fixedly connected to the base 4.

[0039] Specifically, the base 4 is used to support and fix the test device, and the lower base plate 3 is fixed to the base 4 by bolts, so that the plane of the lower base plate 3 is perpendicular to the direction of gravity.

[0040] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to explain the relative positional relationship and movement between components in a specific orientation. If the specific orientation changes, the directional indication will also change accordingly. These terms are used only for the convenience of describing this application and for simplifying the description, and are not intended to 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 application.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A test device for the luffing angle of a marine crane, characterized in that, include: Upper base plate (2) is used to install marine crane (1); The lower base plate (3) is rotatably connected to the first end of the upper base plate (2); The oil cylinder (5) is located between the second end of the upper base plate (2) and the second end of the lower base plate (3), and one end of the oil cylinder (5) is connected to the upper base plate (2) and the other end is connected to the lower base plate (3). The oil cylinder (5) is used to drive the upper base plate (2) to rotate relative to the lower base plate (3).

2. The marine crane luffing angle testing device according to claim 1, characterized in that, The second end of the lower base plate (3) is provided with a cylinder support plate (31). The cylinder support plate (31) is located on the side of the lower base plate (3) away from the upper base plate (2). The cylinder (5) is hinged to the cylinder support plate (31) through a first pin (32).

3. The marine crane luffing angle testing device according to claim 2, characterized in that, The lower base plate (3) is provided with a through hole (33) corresponding to the position of the oil cylinder (5), and the piston rod end of the oil cylinder (5) passes through the through hole (33) and is connected to the upper base plate (2).

4. The marine crane luffing angle testing device according to claim 1, characterized in that, The upper base plate (2) is provided with a connecting part (21) corresponding to the position of the oil cylinder (5), and the connecting part (21) is rotatably connected to the piston rod end of the oil cylinder (5).

5. The marine crane luffing angle testing device according to claim 4, characterized in that, The connecting part (21) is hinged to the piston rod end of the oil cylinder (5) via a second pin.

6. The marine crane luffing angle testing device according to any one of claims 1 to 5, characterized in that, The oil cylinder (5) is located at the middle of the second end of the lower base plate (3).

7. The marine crane luffing angle testing device according to claim 1, characterized in that, The upper base plate (2) is hinged to the lower base plate (3) via a third pin (34), and the axial direction of the third pin (34) is perpendicular to the pushing direction of the oil cylinder (5).

8. The marine crane luffing angle testing device according to claim 1, characterized in that, Also includes: The base (4) is fixedly connected to the lower base plate (3).

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