External ship external fire fighting device

Abstract

The utility model provides an external ship external fire fighting device which comprises a gear box and a fire fighting diesel engine, a power input shaft extends out of the power input end of the gear box, and the power output end of the fire fighting diesel engine is fixedly connected with a hub; a pneumatic clutch is installed between the outer end of the hub and the outer end of the power input shaft in a transmission mode. The external fire-fighting device has the beneficial effects that the problems of serious abrasion of mechanical parts, complicated structure, high cost, large overall size, large potential safety hazard and the like due to the fact that a hydraulic clutch is integrated in a gear box of an existing external fire-fighting device for the ship can be solved, and all the parts can move when used and stop when not used, so that the abrasion of equipment is reduced, and the service life of the equipment is prolonged. Unnecessary configuration is reduced, and the intrinsic safety of equipment is improved.

Description

Technical Field

[0001] The utility model belongs to a ship external fire-fighting device, in particular to an external ship external fire-fighting device. Background Art

[0002] The ship's external fire-fighting equipment mainly consists of three parts: fire water monitor, fire water pump and fire diesel engine. The fire diesel engine is the power source of the fire water pump. In addition, when designing and building ships, in order to reduce production costs, existing ships mostly use ship main propulsion diesel engines to replace fire diesel engines to provide power for fire water pumps.

[0003] At present, the existing main propulsion diesel engines of ships are basically connected to fire pumps through hydraulic gearboxes to achieve the "co-disconnection" or "disconnection" functions. Moreover, the hydraulic gearboxes used in the existing main propulsion diesel engines of ships basically integrate the hydraulic clutch with clutch function inside the gearbox. At this time, the basic working principle of this type of hydraulic gearbox is: two transmission shafts are arranged in the gearbox, namely a power input shaft and a power output shaft, wherein the power input shaft is connected to the main propulsion diesel engine of the ship through a coupling transmission, and the power output shaft is connected to the pump shaft of the fire pump through a key connection, and when the power is transmitted to the power input shaft of the hydraulic gearbox under the action of the coupling, the power input shaft will always rotate with the main propulsion diesel engine of the ship; in addition, it is also on the power input shaft The free end is provided with a clutch plate which can only rotate with the power input shaft but cannot move radially or axially, and is called a static plate; the free end of the power output shaft is provided with a clutch plate which can move axially and drive the power output shaft to rotate, and is called a dynamic plate; a set of piston mechanisms is also provided inside the hydraulic gearbox, and the piston mechanism can push the dynamic plate onto the static plate along the axial direction of the power output through the power of hydraulic oil, so that the dynamic plate and the static plate are tightly fitted together. At this time, under the action of friction, the static plate can rotate with the dynamic plate, thereby transmitting the power of the power input shaft to the power output shaft, and finally making the fire pump run.

[0004] Therefore, when the above-mentioned hydraulic gearbox is used in conjunction with the ship's main propulsion diesel engine and fire pump as a ship's external fire-fighting device, the following problems exist: 1. Since the hydraulic clutch in the ship's external fire-fighting device requires hydraulic oil to provide combined power, and the power input shaft and related gears, bearings and other components in the hydraulic clutch will always be in operation, it will not only cause serious wear of mechanical parts, but also affect the overall life of the equipment and the inherent safety of the equipment; 2. Since it needs to provide hydraulic oil power when working so that the moving plate and the static plate in the clutch fit tightly, it not only has high requirements for oil products, but also needs to set up a set of power devices such as gear pumps and hydraulic pistons separately, resulting in high overall work requirements and high costs; 2. Since it integrates the hydraulic clutch with clutch function inside the gearbox, it not only has certain requirements on the gearbox's external dimensions, but also cannot intuitively judge whether the working state of each component is abnormal or whether abnormal wear occurs, which poses certain safety hazards; 4. Hydraulic oil accessories such as hydraulic oil coolers, oil filters, gear pumps, etc. need to be set outside the hydraulic gearbox, and a separate cooling water pipeline is set, which has a complex structure. Utility Model Content

[0005] The technical problem solved by the utility model is to provide an external ship external fire-fighting device in which a clutch structure with a clutch function is arranged on the outside of a gear box, so as to overcome the problems of severe wear of mechanical parts, complex structure, high cost, large overall size, and great safety hazards in the existing ship external fire-fighting device due to the integration of the hydraulic clutch inside the gear box.

[0006] In order to solve the above technical problems, the technical solution provided by the utility model is: an external ship external fire-fighting device, which includes a gearbox and a fire-fighting diesel engine, a power input shaft extends from the power input end of the gearbox, and a wheel hub is fixedly connected to the power output end of the fire-fighting diesel engine; a pneumatic clutch is installed between the outer end of the wheel hub and the outer end of the power input shaft. Based on this, since the utility model adopts a structure in which a pneumatic clutch is arranged between the gearbox and the fire-fighting diesel engine, compared with the existing ship external fire-fighting device, on the one hand, the utility model can simplify the design and installation requirements of the gearbox through the external clutch installation structure, and facilitate the staff to observe the working status of each component at any time and intuitively, find hidden dangers and deal with them in time, and improve the safety of the equipment; at the same time, the utility model can also realize the "use when moving, stop when not using" of all components, thereby reducing equipment wear, reducing unnecessary configurations, and improving the intrinsic safety of the equipment; on the other hand, the utility model can cancel hydraulic oil and related hydraulic components through the pneumatic clutch, reducing the requirements for the working environment of the equipment; at the same time, it can cancel the demand for cooling water and reduce unnecessary pipeline settings.

[0007] Furthermore, the pneumatic clutch includes a clutch housing, one side of which is fixedly connected to the power input shaft by a fastener, and the interior of the clutch housing is radially provided with an air bag and a friction shoe in sequence from the outside to the inside, the friction shoe includes a friction shoe shell located on the inside of the air bag, and the inner side of the friction shoe shell is radially provided with a reset spring, a support rod and a friction plate in sequence from the outside to the inside, and the outer side of the reset spring can contact the air bag or the friction shoe shell, and the inner side of the reset spring can contact the friction plate; both ends of the support rod are connected to the clutch housing; the friction plate is arranged on the outside of the wheel hub and can contact the outer ring of the wheel hub. In this way, when the gearbox needs to output power to the outside, that is, when it needs to be in the "closed" state, the utility model can fill the airbag with compressed air, and the airbag can swell under the action of the compressed air, and exert a centripetal radial force on the friction shoe, so that the friction plate in the friction shoe moves inward and fits tightly on the wheel hub; thereby connecting the friction shoe with the wheel hub and the clutch housing as a whole; at this time, since the wheel hub is connected to the power output end of the fire diesel engine and can rotate with the operation of the fire diesel engine, the clutch housing is connected to the power input shaft of the gearbox, and the power input shaft can rotate with the wheel hub under the action of the friction shoe and transmit the corresponding power. Conversely, when the gearbox does not need to output power to the outside, that is, when it needs to be in the "disconnected" state, the utility model can discharge the compressed air from the airbag through the air port, and the airbag is in a contracted state, and the centripetal radial force applied to the friction shoe will disappear, and at the same time, the friction plate in the friction shoe can be separated from the wheel hub under the reset action of the reset spring, so that the clutch housing and the power output end of the gearbox no longer rotate with the wheel hub.

[0008] Furthermore, the clutch housing is provided with an air port, which is connected to the air inlet and outlet of the airbag, and the air port is connected to a compressed air control component through an air charging and discharging pipeline, and the compressed air control component can be used to control the compressed air to enter the airbag or discharge the compressed air in the airbag.

[0009] Furthermore, the power input shaft of the gearbox is a hollow shaft, the inner cavity of the hollow shaft is provided with a charging and discharging pipeline 1, and the interior of the clutch housing is provided with a charging and discharging pipeline 2, one end of the charging and discharging pipeline 1 is connected to the compressed air control component, the other end of the charging and discharging pipeline 1 is connected to one end of the charging and discharging pipeline 2, and the other end of the charging and discharging pipeline 2 is connected to the air port, and when the compressed air is injected into the airbag, it can flow through the charging and discharging pipeline 1, the charging and discharging pipeline 2, and the air port in sequence and then enter the airbag.

[0010] Furthermore, a power output shaft extends from the power output end of the gear box, and the power output shaft is connected to the pump shaft of the fire water pump through a key connection structure, and transmits power from the gear box to the fire water pump.

[0011] Furthermore, the fire-fighting diesel engine is the main propulsion diesel engine of the ship.

[0012] It can be seen from the above technical scheme that the utility model has the following advantages: compared with the existing external fire-fighting devices of ships, on the one hand, the utility model can simplify the design of the external dimensions and installation requirements of the gear box through the external clutch installation structure, and facilitate the staff to observe the working status of each component at any time and intuitively, and deal with hidden dangers in time to improve the safety of the equipment; at the same time, the utility model can also realize the "move when used and stop when not used" of all components, thereby reducing equipment wear, reducing unnecessary configurations, and improving the inherent safety of the equipment; on the other hand, the utility model can eliminate hydraulic oil and related hydraulic components through the pneumatic clutch, reduce the requirements for the internal working environment of the equipment, and reduce the equipment maintenance cost; at the same time, it can eliminate the demand for cooling water and reduce unnecessary pipeline settings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic structural diagram of a specific implementation mode of the utility model (the fire pump is not drawn in the figure).

[0015] In the figure: 1. air port; 2. air bag; 3. reset spring; 4. support rod; 5. friction plate; 6. wheel hub; 7. clutch housing; 8. friction bearing shell; 9. power input shaft; 10. charging and discharging pipeline 1; 11. fire diesel engine; 12. charging and discharging pipeline 2. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0017] like Figure 1As shown, the utility model provides an external fire-fighting device for ships, which includes a fire-fighting water pump, a gear box and a fire-fighting diesel engine 11, wherein a power output shaft extends from the power output end of the gear box, and the power output shaft is connected to the pump shaft of the fire-fighting water pump through a key connection structure, and transmits power from the gear box to the fire-fighting water pump. A power input shaft 9 extends from the power input end of the gear box, and a wheel hub 6 is fixedly connected to the power output end of the fire-fighting diesel engine 11, and a pneumatic clutch is installed between the outer end of the wheel hub 6 and the outer end of the power input shaft 9.

[0018] The pneumatic clutch includes a clutch housing 7, one side of which is fixedly connected to a power input shaft 9 via fasteners, and an air bag 2 and a friction shoe are arranged radially in sequence from the outside to the inside of the clutch housing 7, wherein an air inlet and outlet port 1 of the air bag 2 is connected to an air port 1 opened on the clutch housing 7, and the air port 1 is connected to a compressed air control component via an air charging and discharging pipeline, and the compressed air control component can be used to control the compressed air to enter the air bag 2 or discharge the compressed air in the air bag 2.

[0019] The friction shoe includes a friction shoe shell 8 located on the inner side of the airbag 2, and the inner side of the friction shoe shell 8 is radially arranged with a reset spring 3, a support rod 4 and a friction plate 5 in sequence from the outside to the inside, and the outer side of the reset spring 3 can contact the airbag 2 or the friction shoe shell 8, and the inner side of the reset spring 3 can contact the friction plate 5, and the two ends of the support rod 4 are connected to the clutch housing 7; the friction plate 5 is arranged on the outer side of the wheel hub 6 and can contact the outer ring of the wheel hub 6.

[0020] In this way, when the gearbox needs to output power to the outside, that is, it needs to be in the "closed" state, the utility model can fill compressed air into the airbag 2. At this time, the airbag 2 can swell under the action of compressed air and exert a centripetal radial force on the friction shoe, so that the friction plate 5 in the friction shoe moves inward and fits tightly on the wheel hub 6; thereby connecting the friction shoe, the wheel hub 6 and the clutch housing 7 as a whole; at this time, since the wheel hub 6 is connected to the power output end of the fire diesel engine 11 and can rotate with the operation of the fire diesel engine 11, the clutch housing 7 is connected to the power input shaft 9 of the gearbox, and the power input shaft 9 can rotate with the wheel hub 6 under the action of the friction shoe and transmit corresponding power. On the contrary, when the gearbox is not needed to output power to the outside, that is, it needs to be in the "disengaged" state, the utility model can discharge compressed air from the airbag 2 through the air port 1. At this time, the airbag 2 is in a contracted state, and the centripetal radial force applied to the friction shoe will disappear. At the same time, the friction plate 5 in the friction shoe can be disengaged from the wheel hub 6 under the resetting action of the resetting spring 3, so that the clutch housing 7 and the power output end of the gearbox no longer rotate with the wheel hub 6.

[0021] Moreover, based on this, since the utility model adopts a structure in which a pneumatic clutch is arranged between the gear box and the fire-fighting diesel engine 11, compared with the existing external fire-fighting devices of ships, on the one hand, the utility model can simplify the design of the external dimensions and installation requirements of the gear box through the external clutch installation structure, and facilitate the staff to observe the working status of each component at any time and intuitively, and deal with hidden dangers in time to improve the safety of the equipment; at the same time, the utility model can also realize the "move when used and stop when not used" of all components, thereby reducing equipment wear, reducing unnecessary configurations, and improving the inherent safety of the equipment; on the other hand, the utility model can eliminate hydraulic oil and related hydraulic components through the pneumatic clutch, thereby reducing the requirements for the internal working environment of the equipment; at the same time, it can eliminate the demand for cooling water and reduce unnecessary pipeline settings.

[0022] In addition, as a preferred embodiment, the utility model can also set the power input shaft 9 of the gearbox as a hollow shaft, and set a charging and discharging pipeline 10 in the inner cavity of the hollow shaft, open a charging and discharging pipeline 2 12 inside the clutch housing 7, and make one end of the charging and discharging pipeline 10 connected to the compressed air control component, the other end of the charging and discharging pipeline 10 is connected to one end of the charging and discharging pipeline 2 12, and the other end of the charging and discharging pipeline 2 12 is connected to the air port 1. In this way, the utility model only needs to install a compressed air control component and a corresponding sealing device at the free end of the power input shaft 9 of the gearbox to control the intake and exhaust and sealing of the compressed air, so as to realize the above-mentioned "combining and discharging" and "discharging" functions. In addition, it should be noted that the compressed air control component is a finished product that can be directly purchased, so it will not be described in detail here.

[0023] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions.

[0024] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An external fire-fighting device for ships, comprising a gearbox and a fire-fighting diesel engine, wherein a power input shaft extends from the power input end of the gearbox, and a wheel hub is fixedly connected to the power output end of the fire-fighting diesel engine; characterized in that: A pneumatic clutch is installed between the outer end of the wheel hub and the outer end of the power input shaft.

2. The external fire-fighting device for ships according to claim 1, characterized in that: The pneumatic clutch includes a clutch housing, one side of which is fixedly connected to the power input shaft by a fastener, and the interior of the clutch housing is radially provided with an air bag and a friction shoe in sequence from the outside to the inside, the friction shoe includes a friction shoe shell located on the inside of the air bag, and the inner side of the friction shoe shell is radially provided with a reset spring, a support rod and a friction plate in sequence from the outside to the inside, and the outer side of the reset spring can contact the air bag or the friction shoe shell, and the inner side of the reset spring can contact the friction plate; both ends of the support rod are connected to the clutch housing; the friction plate is arranged on the outside of the wheel hub and can contact the outer ring of the wheel hub.

3. The external fire-fighting device for ships according to claim 2 is characterized in that: The clutch housing is provided with an air port which is communicated with the air inlet and outlet of the air bag, and the air port is communicated with a compressed air control component through a charging and discharging air pipeline.

4. The external fire-fighting device for ships according to claim 3 is characterized in that: The power input shaft of the gearbox is a hollow shaft, the inner cavity of the hollow shaft is provided with a charging and discharging air pipeline 1, the interior of the clutch housing is provided with a charging and discharging air pipeline 2, one end of the charging and discharging air pipeline 1 is connected to the compressed air control component, the other end of the charging and discharging air pipeline 1 is connected to one end of the charging and discharging air pipeline 2, and the other end of the charging and discharging air pipeline 2 is connected to the air port.

5. The external fire-fighting device for ships according to any one of claims 1 to 4, characterized in that: A power output shaft extends out of the power output end of the gear box, and the power output shaft is connected to the pump shaft of the fire water pump through a key connection structure.

6. The external fire-fighting device for ships according to any one of claims 1 to 4, characterized in that: The fire-fighting diesel engine is the main propulsion diesel engine of the ship.

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