Dredger rake arm horizontal angle sensor

Abstract

The utility model discloses a dredger rake arm horizontal angle sensor which comprises a rake pipe A, a rake pipe B and an angle sensor, one end of the angle sensor is connected to the rake pipe B, and the other end of the angle sensor is connected to the rake pipe A; the angle sensor comprises a rake pipe connecting piece B, a spring steel plate, a connecting steel plate, a connecting rod, a coupling rotating shaft, a permanent magnet, a rake pipe fixing base B, a watertight stuffing box, a signal cable, a circuit cavity sealing cover plate, a shell, a magnetic measuring and signal transmitting unit and a rake pipe fixing base A. According to the structure of the angle sensor, magnetic coupling is adopted; a measuring circuit is not mechanically connected with a relative movement part, watertightness of an electrical part is more conveniently achieved, the fault rate is lower, the rake pipe belongs to a large steel structural part, magnetic coupling and spring steel plate connection are adopted, and mechanical impact on the sensor when the two rake pipes move relatively can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of angle sensors, in particular to a horizontal angle sensor for the rake arm of a dredging ship. Background Art

[0002] The trailing suction hopper dredger is one of the main types of dredging vessels. It lowers the rake arm to the bottom of the water. When it is running, the pump group on board generates suction, and the rake head installed at the end of the rake pipe sucks the mud and sand on the bottom of the water to achieve the excavation effect. Since the rake arm is below the horizontal plane when working, the posture of the rake pipe cannot be directly observed, and various sensors are needed to realize the posture of the rake pipe. The rake pipe generally consists of two to three sections, and each section is connected by a rubber hose. The indication of the rake arm posture is calculated by the vertical angle of the first section connected to the hull to calculate the position of the end of the first section relative to the hull, and then the position of the end of the second section relative to the hull is calculated by the end position of the first section, the horizontal angle between the first section and the second section, and the vertical angle of the second section.

[0003] When the existing dredging arm works underwater, the mud, sand and stones will impact the sensor under the action of water flow, and the sensor works underwater for a long time, resulting in poor water tightness and stability of the sensor. Utility Model Content

[0004] The utility model aims to provide a horizontal angle sensor for the rake arm of a dredging ship, so as to solve the problems in the above-mentioned background technology that when the rake arm of the existing dredger works underwater, its mud, sand and stones will impact the sensor under the action of water flow, and the sensor works underwater for a long time, resulting in poor water tightness and stability of the sensor.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a dredging ship rake arm horizontal angle sensor, including a rake pipe A, a rake pipe B and an angle sensor, one end of the angle sensor is installed and connected to the rake pipe B, and the other end is installed and connected to the rake pipe A.

[0006] The angle sensor comprises a B rake tube connector, a spring steel plate, a connecting steel plate, a connecting rod, a coupling shaft, a permanent magnet, a B rake tube fixed base, a watertight stuffing box and a signal cable, a circuit chamber sealing cover plate, a shell, a magnetic measurement and signal transmission unit and an A rake tube fixed base. A circuit chamber sealing cover plate is arranged in the middle of the upper end of the shell, a magnetic measurement and signal transmission unit is arranged on the inner side of the shell, a watertight stuffing box and a signal cable are arranged at the rear end of the shell, a B rake tube fixed base is arranged at the bottom end of the shell, an A rake tube fixed base is arranged at the bottom end of the B rake tube fixed base, a coupling shaft is arranged at the inner bottom end of the shell, a permanent magnet is arranged at the connection between the coupling shaft and the shell, a connecting rod is arranged at the bottom end of the coupling shaft, a connecting steel plate is arranged at the front end of the connecting rod, a spring steel plate is arranged at the front end of the connecting steel plate, and a B rake tube connector is arranged at the bottom end of the spring steel plate.

[0007] Among them, one end of the spring steel plate is connected to the B rake pipe connecting piece by screws, and the other end of the spring steel plate is connected to the connecting steel plate by screws.

[0008] Wherein, the A rake pipe fixing base is welded and fixed to the rake pipe A at the horizontal connecting axis.

[0009] Wherein, the shell is made of non-magnetic material.

[0010] Wherein, the B rake pipe connecting piece is welded and fixed to the rake pipe B at the horizontal connecting axis.

[0011] In summary, due to the adoption of the above technology, the beneficial effects of the utility model are:

[0012] In the utility model, the angle sensor structure adopts magnetic coupling, so that there is no mechanical connection between the measuring circuit and the relatively moving parts, so that the watertightness of the electrical part can be achieved more conveniently and the failure rate is lower. The rake pipe is a large steel structure, and the magnetic coupling and spring steel plate connection are adopted to reduce the mechanical impact on the sensor when the two sections of the rake pipe move relative to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the installation state structure of a horizontal angle sensor of the rake arm of a dredging vessel according to the utility model;

[0014] Figure 2 This is a schematic diagram of the enlarged structure of an angle sensor of a horizontal angle sensor of a dredger rake arm according to the utility model;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of an angle sensor of a horizontal angle sensor of a dredger rake arm according to the utility model;

[0016] Figure 4The utility model is a schematic diagram of the cross-sectional structure of an angle sensor of a horizontal angle sensor of a dredging vessel rake arm.

[0017] In the figure: 13, angle sensor; 1, B rake pipe connecting piece; 2, spring steel plate; 3, connecting steel plate; 4, connecting rod; 5, coupling shaft; 6, permanent magnet; 7, B rake pipe fixing base; 8, watertight stuffing box and signal cable; 9, circuit chamber sealing cover plate; 10, housing; 11, magnetic measurement and signal transmission unit; 12, A rake pipe fixing base; 21, rake pipe A; 22, rake pipe B. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0019] Example

[0020] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4A horizontal angle sensor for the rake arm of a dredger comprises a rake pipe A21, a rake pipe B22 and an angle sensor 13. One end of the angle sensor 13 is installed and connected to the rake pipe B22, and the other end is installed and connected to the rake pipe A21. Before use, the horizontal connecting axis of the B rake pipe connector 1 is welded to the rake pipe B22, and the horizontal connecting axis of the A rake pipe fixed base 12 is further welded to the rake pipe A21. The connections are fixed and installed by welding, so that they are more reliable and not easy to fall off during use. One end of the spring steel plate 2 is further connected to the B rake pipe connector 1 by screws, and the other end is continued to be connected to the connecting steel plate 3 by screws. The screw installation connection is convenient for disassembly and assembly, and the spring steel plate 2 can play a role in buffering impact. A connecting rod 4 is further welded to the other end of the connecting steel plate 3, and then the connecting rod 4 is passed through the connecting hole of the coupling shaft 5. A permanent magnet 6 is installed on the top of the coupling shaft 5. When the coupling shaft 5 rotates, the permanent magnet 6 follows Rotation, thereby causing the magnetic field of the permanent magnet 6 to rotate by the same angle, and the housing 10 is made of non-magnetic material, and the magnetic measurement and signal transmission unit 11 in the housing 10 can monitor the change of the horizontal rotation of the magnetic field, and convert this angle into a voltage or current signal through the signal transmission unit and transmit it to the external unit. When the rake pipe A21 and the rake pipe B22 have a horizontal relative movement and produce an angle change, the coupling shaft 5 will also rotate by the same angle relative to the magnetic measurement and signal transmission unit 11. The magnetic measurement and signal transmission unit 11 installed in the housing 10 will convert the angle into a voltage or current signal and transmit it to the external unit through a watertight stuffing box and a signal cable 8. This device adopts magnetic coupling, so that there is no mechanical connection between the measuring circuit and the relatively moving parts, so that the watertightness of the electrical part can be more conveniently achieved, and the failure rate is lower. The rake pipe is a large steel structure. It is connected by magnetic coupling and a spring steel plate 2, which can reduce the mechanical impact of the two sections of the rake pipe on the sensor when the two sections move relative to each other.

[0021] In the utility model, the angle sensor 13 includes a B rake pipe connector 1, a spring steel plate 2, a connecting steel plate 3, a connecting rod 4, a coupling shaft 5, a permanent magnet 6, a B rake pipe fixed base 7, a watertight stuffing box and a signal cable 8, a circuit chamber sealing cover plate 9, a shell 10, a magnetic measurement and signal transmission unit 11 and an A rake pipe fixed base 12, a circuit chamber sealing cover plate 9 is arranged in the middle of the upper end of the shell 10, a magnetic measurement and signal transmission unit 11 is arranged on the inner side of the shell 10, and a rear end of the shell 10 is arranged A watertight stuffing box and a signal cable 8 are arranged, a B rake pipe fixing base 7 is arranged at the bottom end of the shell 10, an A rake pipe fixing base 12 is arranged at the bottom end of the B rake pipe fixing base 7, a coupling shaft 5 is arranged at the inner bottom end of the shell 10, a permanent magnet 6 is arranged at the connection between the coupling shaft 5 and the shell 10, a connecting rod 4 is arranged at the bottom end of the coupling shaft 5, a connecting steel plate 3 is arranged at the front end of the connecting rod 4, a spring steel plate 2 is arranged at the front end of the connecting steel plate 3, and a B rake pipe connecting piece 1 is arranged at the bottom end of the spring steel plate 2.

[0022] In the utility model, one end of the spring steel plate 2 is connected to the B rake pipe connector 1 by screws, and the other end of the spring steel plate 2 is connected to the connecting steel plate 3 by screws. The installation connections are all screw connections, which makes disassembly and assembly convenient and facilitates later disassembly, replacement or maintenance.

[0023] In the utility model, the A rake pipe fixing base 12 is welded and fixed to the rake pipe A21 at the horizontal connecting axis, and the B rake pipe connecting piece 1 is welded and fixed to the rake pipe B22 at the horizontal connecting axis.

[0024] In the present invention, the housing 10 is made of non-magnetic material so that it will not cause signal interference when in use.

[0025] Working principle: Before use, weld the horizontal connecting axis of the B rake pipe connector 1 to the rake pipe B22, and further weld the horizontal connecting axis of the A rake pipe fixed base 12 to the rake pipe A21. The connections are fixed and installed by welding, which makes it more secure and not easy to fall off during use. Further, use screws to connect one end of the spring steel plate 2 to the B rake pipe connector 1, and continue to use screws to connect the other end to the connecting steel plate 3. The screw installation connection is convenient for disassembly and assembly, and the spring steel plate 2 can buffer the impact. Further, a connecting rod 4 is welded to the other end of the connecting steel plate 3, and then the connecting rod 4 is passed through the connecting hole of the coupling shaft 5. A permanent magnet 6 is installed on the top of the coupling shaft 5. When the coupling shaft 5 rotates, the permanent magnet 6 rotates with it, thereby causing the magnetic field of the permanent magnet 6 to rotate by the same angle, and the outer shell 10 is made of non-magnetic material. , and the magnetic measurement and signal transmission unit 11 in the housing 10 can monitor the change of the horizontal rotation of the magnetic field, and convert this angle into a voltage or current signal through the signal transmission unit and transmit it to the external unit. When the rake pipe A21 and the rake pipe B22 have a horizontal relative movement and produce an angle change, the coupling shaft 5 will also rotate by the same angle relative to the magnetic measurement and signal transmission unit 11. The magnetic measurement and signal transmission unit 11 installed in the housing 10 will convert the angle into a voltage or current signal and transmit it to the external unit through a watertight stuffing box and a signal cable 8. This device adopts magnetic coupling, so that there is no mechanical connection between the measuring circuit and the relatively moving parts, so that the watertightness of the electrical part can be more conveniently achieved, and the failure rate is lower. The rake pipe is a large steel structure. It is connected by magnetic coupling and a spring steel plate 2, which can reduce the mechanical impact of the two sections of the rake pipe on the sensor when the two sections move relative to each other.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A dredging vessel rake arm horizontal angle sensor, comprising a rake tube A (21), a rake tube B (22) and an angle sensor (13), characterized in that: One end of the angle sensor (13) is connected to the rake pipe B (22), and the other end is connected to the rake pipe A (21).

2. A dredging vessel rake arm horizontal angle sensor according to claim 1, characterized in that: The angle sensor (13) comprises a B rake pipe connecting piece (1), a spring steel plate (2), a connecting steel plate (3), a connecting rod (4), a coupling shaft (5), a permanent magnet (6), a B rake pipe fixing base (7), a watertight stuffing box and a signal cable (8), a circuit chamber sealing cover plate (9), a housing (10), a magnetic measurement and signal transmission unit (11) and an A rake pipe fixing base (12), wherein a circuit chamber sealing cover plate (9) is arranged in the middle of the upper end of the housing (10), a magnetic measurement and signal transmission unit (11) is arranged on the inner side of the housing (10), and a watertight stuffing box and a signal cable are arranged at the rear end of the housing (10). A signal cable (8), a B rake tube fixing base (7) is arranged at the bottom end of the housing (10), an A rake tube fixing base (12) is arranged at the bottom end of the B rake tube fixing base (7), a coupling shaft (5) is arranged at the inner bottom end of the housing (10), a permanent magnet (6) is arranged at the connection between the coupling shaft (5) and the housing (10), a connecting rod (4) is arranged at the bottom end of the coupling shaft (5), a connecting steel plate (3) is arranged at the front end of the connecting steel plate (3), a spring steel plate (2) is arranged at the front end of the connecting steel plate (3), and a B rake tube connecting piece (1) is arranged at the bottom end of the spring steel plate (2).

3. A dredging vessel rake arm horizontal angle sensor according to claim 2, characterized in that: One end of the spring steel plate (2) is connected to the B rake pipe connector (1) via screws, and the other end of the spring steel plate (2) is connected to the connecting steel plate (3) via screws.

4. A dredging vessel rake arm horizontal angle sensor according to claim 2, characterized in that: The A rake pipe fixing base (12) is welded and fixed to the rake pipe A (21) at the horizontal connecting axis.

5. The dredging vessel rake arm horizontal angle sensor according to claim 2, characterized in that: The shell (10) is made of non-magnetic material.

6. A dredging vessel rake arm horizontal angle sensor according to claim 2, characterized in that: The B rake pipe connecting piece (1) is welded and fixed to the rake pipe B (22) at the horizontal connecting axis.

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