A protection structure of a water spraying nozzle for an open cargo hold of a ship
By combining fixed components, moving components, springs, and single-acting hydraulic cylinders, the problem of collisions with the sprinkler heads during cargo hoisting is solved, ensuring that the water spray heads do not affect the formation of the water curtain during a fire, thus achieving effective protection of the cargo hold walls.
Patent Information
- Application Number
- CN202510426415.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2045-04-07
AI Technical Summary
During the hoisting process, cargo may collide with the water spray nozzles, causing damage to the nozzles. Adding a protective ring around the nozzles would hinder the formation of the water spray curtain, thus failing to effectively protect the cargo hold walls.
It adopts a combination structure of fixed parts, moving parts, springs and single-acting hydraulic cylinders. Under normal conditions, the moving parts cover the nozzles to avoid collisions. In case of fire, the piston rod of the hydraulic cylinder moves to expose the nozzles and ensure the formation of a water curtain.
It protects the nozzles from damage during hoisting and does not hinder the formation of a water curtain in the event of a fire, thus effectively protecting the cargo hold walls.
Smart Images
Figure CN120054793B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of ship technology, in particular to a protection structure of water spray nozzle for open cargo hold of ship. BACKGROUND
[0002] The water spray nozzle for open cargo hold of ship needs to be arranged in the open cargo hold, and the water curtain formed by the nozzle can effectively protect the cargo hold wall to prevent the cargo hold wall from being damaged when the open cargo hold is on fire. However, since the nozzle needs to be arranged in the open cargo hold, the cargo may collide with the nozzle during hoisting, causing the nozzle to be damaged and unable to work normally. If a protection ring is added around the water spray nozzle, the problem of the cargo colliding with the nozzle during hoisting can be solved, but the existence of the protection ring will hinder the formation of the water spray curtain, resulting in the inability to effectively protect the cargo hold wall when the open cargo hold is on fire. If the upper half of the protection ring is retained and the lower half of the protection ring is removed, the protection ring will not hinder the formation of the water spray curtain, but the cargo may still collide with the nozzle during upward hoisting.
[0003] Therefore, there is an urgent need for a protection structure of water spray nozzle for open cargo hold of ship to solve the above problems. SUMMARY
[0004] The purpose of the present application is to provide a protection structure of water spray nozzle for open cargo hold of ship, which can avoid the collision of cargo with the nozzle during hoisting and will not hinder the formation of the spray curtain when the cargo hold is on fire.
[0005] To achieve this purpose, the present application adopts the following technical solutions:
[0006] A protection structure of water spray nozzle for open cargo hold of ship, comprising a fixed part, a moving part, a spring and a single-acting hydraulic cylinder;
[0007] The fixed part is fixedly arranged on the cargo hold wall and extends into the cargo hold at one end and extends out of the cargo hold at the other end. The moving part is slidingly arranged in the fixed part, and the nozzle is exposed at the end of the fixed part extending into the cargo hold. The spray pipe is connected with the nozzle through the moving part. The moving part has a first position and a second position. When the moving part is in the first position, the nozzle is located in the moving part. When the moving part is in the second position, the nozzle is exposed outside the moving part.
[0008] The spring connects the fixed part and the moving part, the single-acting hydraulic cylinder comprises a cylinder body and a piston rod, the cylinder body is fixed on the fixed part, the piston rod has a third position and a fourth position, when the piston rod is located at the third position and the moving part is located at the first position, the piston rod abuts against the moving part, so that the moving part stays at the first position, when the piston rod is located at the fourth position, the spring can drive the moving part located at the first position to move to the second position, the liquid inlet of the single-acting hydraulic cylinder is communicated with the spray water pipe, when the spray water pipe is communicated with spray water, the spray water can enter the single-acting hydraulic cylinder, so that the piston rod of the single-acting hydraulic cylinder moves from the third position to the fourth position.
[0009] As an improvement of the above technical scheme, the fixed part comprises a first cylinder body and a first bottom plate, the first cylinder body has a first end and a second end, the first end of the first cylinder body penetrates through the cargo compartment wall and is fixed on the cargo compartment wall, the second end of the first cylinder body is located outside the cargo compartment, and the first bottom plate is arranged on the second end of the first cylinder body, wherein a first through hole is arranged on the bottom plate, and the spray water pipe penetrates through the first through hole.
[0010] As an improvement of the above technical scheme, the moving part comprises a second cylinder body, a third cylinder body and a second bottom plate, the second cylinder body is slidably arranged in the first cylinder body, the second cylinder body has a third end close to the first bottom plate and a fourth end away from the first bottom plate, the second bottom plate is arranged on the third end of the second cylinder body, the third cylinder body has a fifth end close to the second bottom plate and a sixth end away from the second bottom plate, the fifth end of the third cylinder body is inserted into the fourth end of the second cylinder body and is fixedly connected with the fourth end of the second cylinder body, and when the moving part is located at the first position, the second cylinder body is located in the first cylinder body.
[0011] As an improvement of the above technical scheme, the first cylinder body, the second cylinder body and the third cylinder body are all circular pipes, the outer diameter of the second cylinder body is not greater than the inner diameter of the first cylinder body, and the outer diameter of the third cylinder body is not greater than the inner diameter of the second cylinder body.
[0012] As an improvement of the above technical scheme, the spring connects the first bottom plate and the second bottom plate.
[0013] As an improvement of the above technical scheme, a handle arranged in the third cylinder body is further included, and the handle is fixedly connected to the inner wall of the third cylinder body.
[0014] As the improvement of the above technical scheme, the fixing member further comprises a fourth cylinder, the fourth cylinder is arranged in the first cylinder, and one end of the fourth cylinder is fixedly connected to the first bottom plate, the moving member further comprises a fifth cylinder and a limiting block, one end of the fifth cylinder is fixed to the second bottom plate, and the other end of the fifth cylinder is located outside the second cylinder, the limiting block is sleeved with the one end of the fifth cylinder located outside the second cylinder, and the limiting block is slidably arranged in the fourth cylinder, the limiting block is fixedly connected with the fifth cylinder, the fourth cylinder, the fifth cylinder, the third cylinder, the second cylinder and the first cylinder are coaxially arranged, and when the piston rod is located at the third position, the piston rod abuts against one side of the limiting block close to the first bottom plate.
[0015] As the improvement of the above technical scheme, the axis of the piston rod is perpendicular to the axis of the fifth cylinder, one end of the piston rod away from the cylinder is provided with an abutting plane, the abutting plane is arranged on the side of the piston rod close to the second bottom plate, the abutting plane is perpendicular to the axis of the first cylinder, and when the moving member is located at the first position, the side surface of the limiting block close to the first bottom plate abuts against the abutting plane.
[0016] As the improvement of the above technical scheme, the one end of the piston rod away from the cylinder is further provided with an abutting inclined surface, the abutting inclined surface is arranged on the side of the piston rod close to the first bottom plate, the abutting inclined surface is arranged at an angle with the axis of the piston rod, and along the direction from the one end of the piston rod away from the cylinder to the one end of the piston rod close to the cylinder, the abutting inclined surface is inclined to the direction close to the first bottom plate.
[0017] When the piston rod is located at the third position and the moving member moves from the second position to the first position, the limiting block can abut against the abutting inclined surface.
[0018] As the improvement of the above technical scheme, the side of the top end of the limiting block close to the second bottom plate is provided with an abutting arc surface, when the piston rod is located at the third position and the moving member moves from the second position to the first position, the abutting arc surface can abut against the abutting inclined surface.
[0019] Compared with the prior art, the present application has the following advantages:
[0020] The ship open cargo hold water spray nozzle protection structure of the application, under normal circumstances, the moving part is located at the first position, the piston rod of the single-acting hydraulic cylinder is located at the third position to limit the moving part at the first position, avoiding its movement to the second position, at this time, the nozzle is located in the moving part, the moving part can play a shielding and protecting role on the nozzle, avoiding the collision of the nozzle during the cargo hoisting process. When the cargo hold is on fire and needs to spray water curtain into the cargo hold through the nozzle to protect the cargo hold wall, the spray water pipe is connected with the spray water, the spray water reaches the nozzle through the spray water pipe, and after the spray water pipe is connected with the spray water, the water in the spray water pipe also reaches the single-acting hydraulic cylinder. Under the action of the spray water pressure, the piston rod of the single-acting hydraulic cylinder moves from the third position to the fourth position, at this time, the spring in the stretched state drives the moving part to move from the first position to the second position, so that the nozzle is exposed to the moving part, avoiding the influence of the moving part on the nozzle spray water curtain. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 is a schematic diagram of the ship open cargo hold water spray nozzle protection structure provided by the embodiment of the application;
[0022] Figure 2 is Figure 1 the cross section at A-A in Figure 1 (the moving part is located at the first position, and the piston rod is located at the third position);
[0023] Figure 3 is Figure 1 the cross section at B-B in Figure 1 (the moving part is located at the first position, and the piston rod is located at the third position);
[0024] Figure 4 is Figure 3 the local enlarged view at C in
[0025] Figure 5 is Figure 1 the cross section at A-A in Figure 2 (the moving part is located at the second position, and the piston rod is located at the fourth position);
[0026] Figure 6 is Figure 1 the cross section at B-B in Figure 2 (the moving part is located at the second position, and the piston rod is located at the fourth position);
[0027] Figure 7 is a structure schematic diagram of the single-acting hydraulic cylinder of the ship open cargo hold water spray nozzle protection structure provided by the embodiment of the application;
[0028] Figure 8 is a local enlarged view of the abutment arc surface of the limiting block and the abutment plane of the piston rod of the ship open cargo hold water spray nozzle protection structure provided by the embodiment of the application when they abut.
[0029] In the drawings:
[0030] 1. fixed part; 11. first cylinder; 12. first bottom plate; 13. fourth cylinder;
[0031] 2. moving part; 21. second cylinder; 22. third cylinder; 23. second bottom plate; 24. fifth cylinder; 25. limiting block; 251. abutting arc surface;
[0032] 3. spring;
[0033] 4. single-acting hydraulic cylinder; 41. cylinder body; 42. piston rod; 421. abutting plane; 422. abutting inclined surface; 43. piston; 44. return spring; 45. hydraulic cavity; 46. cavity;
[0034] 5. connecting bolt;
[0035] 6. handle;
[0036] 7. copper pipe;
[0037] 10. nozzle; 20. shower pipe;
[0038] 100. cargo hold bulkhead. DETAILED DESCRIPTION
[0039] The specific embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.
[0040] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0041] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0042] In the description of the present embodiment, the terms "upper", "lower", "right", and the like, orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in description, and have no special meaning.
[0043] As shown in Figures 1-7 The present embodiment provides a ship open cargo hold water spray nozzle protection structure, which comprises a fixed part 1, a moving part 2, a spring 3 and a single-acting hydraulic cylinder 4. The fixed part 1 is fixedly arranged on the cargo hold wall 100, and one end extends into the cargo hold, and the other end extends out of the cargo hold through the cargo hold wall 100. The moving part 2 is slidingly arranged in the fixed part 1, and the nozzle 10 is exposed to the one end of the fixed part 1 extending into the cargo hold. The spray pipe 20 is connected with the nozzle 10 through the moving part 2. The moving part 2 has a first position and a second position. When the moving part 2 is located at the first position, the nozzle 10 is located in the moving part 2. When the moving part 2 is located at the second position, the nozzle 10 is exposed to the moving part 2. The spring 3 connects the fixed part 1 and the moving part 2, and extends along the axis direction parallel to the fixed part 1. When the moving part 2 is located at the first position, the spring 3 is in a stretched state. The single-acting hydraulic cylinder 4 comprises a cylinder body 41 and a piston rod 42. The cylinder body 41 is fixed to the fixed part 1. The piston rod 42 has a third position and a fourth position. When the piston rod 42 is located at the third position and the moving part 2 is located at the first position, the piston rod 42 abuts against the moving part 2 to keep the moving part 2 at the first position. When the piston rod 42 is located at the fourth position, the spring 3 can drive the moving part 2 located at the first position to move to the second position. The liquid inlet of the single-acting hydraulic cylinder 4 communicates with the spray pipe 20. When the spray pipe 20 is filled with spray water, the spray water can enter the single-acting hydraulic cylinder 4 to make the piston rod 42 of the single-acting hydraulic cylinder 4 move from the third position to the fourth position.
[0044] The ship open cargo hold water spray nozzle protection structure provided by the embodiment has the following advantages. Under normal circumstances, the moving part 2 is located at the first position, the piston rod 42 of the single-acting hydraulic cylinder 4 is located at the third position to limit the moving part 2 at the first position, and the moving part 2 is prevented from moving to the second position. At this time, the nozzle 10 is located in the moving part 2, and the moving part 2 can shield and protect the nozzle 10, so that the nozzle 10 is prevented from being collided by the cargo during hoisting. When the cargo hold is on fire and needs to spray water curtain into the cargo hold through the nozzle 10 to protect the cargo hold wall 100, the spray water pipe 20 is connected to the spray water, the spray water reaches the nozzle 10 through the spray water pipe 20, and after the spray water pipe 20 is connected to the spray water, the water in the spray water pipe 20 also reaches the single-acting hydraulic cylinder 4. Under the action of the spray water pressure, the piston rod 42 of the single-acting hydraulic cylinder 4 moves from the third position to the fourth position. At this time, the spring 3 in the stretched state drives the moving part 2 to move from the first position to the second position, so that the nozzle 10 is exposed to the moving part 2, and the moving part 2 is prevented from affecting the nozzle 10 to spray the water curtain.
[0045] Optionally, as shown in Figures 1-6 The fixed part 1 includes a first cylinder 11 and a first bottom plate 12. The first cylinder 11 has a first end and a second end. The first end of the first cylinder 11 penetrates the cargo hold wall 100 and is fixed to the cargo hold wall 100. The second end of the first cylinder 11 is located outside the cargo hold. The first bottom plate 12 is arranged on the second end of the first cylinder 11. The first bottom plate 12 is provided with a first through hole. The spray water pipe 20 penetrates the first through hole. In the embodiment, the first bottom plate 12 and the first cylinder 11 are welded and fixed.
[0046] Optionally, as shown in Figures 1-6As shown, the moving part 2 comprises a second cylinder 21, a third cylinder 22 and a second bottom plate 23, the second cylinder 21 is slidingly arranged in the first cylinder 11, the second cylinder 21 has a third end close to the first bottom plate 12 and a fourth end away from the first bottom plate 12, the second bottom plate 23 is arranged on the third end of the second cylinder 21, in this embodiment, the second bottom plate 23 is welded with the second cylinder 21, the third cylinder 22 has a fifth end close to the second bottom plate 23 and a sixth end away from the second bottom plate 23, the fifth end of the third cylinder 22 is inserted into the fourth end of the second cylinder 21 and fixedly connected with the fourth end of the second cylinder 21, in this embodiment, the second cylinder 21 is welded with the third cylinder 22. When the moving part 2 is in the first position, the second cylinder 21 is located in the first cylinder 11, avoiding the second cylinder 21 being directly impacted by the goods. And the third cylinder 22 is inserted into the fourth end of the second cylinder 21 and fixedly connected with the second cylinder 21, which not only improves the structural strength of the third cylinder 22, but also reduces the influence of the third cylinder 22 being deformed by the goods on the second cylinder 21, avoiding the second cylinder 21 being deformed too much to slide relative to the first cylinder 11, ensuring that the moving part 2 can smoothly move to the second position when the fire occurs in the cargo compartment. The first cylinder 11 is used as a guide slide for the second cylinder 21.
[0047] In this embodiment, as shown in Figures 1-6 The first cylinder 11, the second cylinder 21 and the third cylinder 22 are all circular pipes, the outer diameter of the second cylinder 21 is not greater than the inner diameter of the first cylinder 11, so that the second cylinder 21 can slide relative to the first cylinder 11, and the outer diameter of the third cylinder 22 is not greater than the inner diameter of the second cylinder 21, so that the third cylinder 22 can be inserted into the second cylinder 21. In this embodiment, the outer diameter of the second cylinder 21 is smaller than the inner diameter of the first cylinder 11, so that the second cylinder 21 can slide relative to the first cylinder 11 more easily, and the outer diameter of the third cylinder 22 is smaller than the inner diameter of the second cylinder 21, facilitating the third cylinder 22 to be smoothly inserted into the second cylinder 21.
[0048] Optionally, as shown in Figures 2-6 The spring 3 is connected between the first bottom plate 12 and the second bottom plate 23. The first bottom plate 12 and the second bottom plate 23 are both perpendicular to the axial direction of the first cylinder 11, and the first bottom plate 12 and the second bottom plate 23 are oppositely arranged, one end of the spring 3 is connected to the first bottom plate 12, and the other end is connected to the second bottom plate 23, facilitating the spring 3 to drive the first cylinder 11 by the elastic force.
[0049] Further, the ship open cargo hold water spray nozzle protection structure provided by the embodiment further comprises a first fixed plate and a second fixed plate, one end of the spring 3 is fixedly provided with the first fixed plate, and the other end is fixedly provided with the second fixed plate, the first fixed plate is fixedly connected with the first bottom plate 12, and the second fixed plate is fixedly connected with the second bottom plate 23. In the embodiment, the first fixed plate is welded and fixed to one end of the spring 3, and the second fixed plate is welded and fixed to the other end of the spring 3. By arranging the first fixed plate and the second fixed plate, the spring 3 is facilitated to be connected with the first bottom plate 12 and the second bottom plate 23.
[0050] Further, as shown in Figure 2 , Figure 3 , Figure 5 and Figure 6 , the ship open cargo hold water spray nozzle protection structure provided by the embodiment further comprises a plurality of connecting bolts 5, and the first fixed plate and the first bottom plate 12 and the second fixed plate and the second bottom plate 23 are connected through the connecting bolts 5. In the embodiment, threaded holes are arranged on the first fixed plate and the second fixed plate, the bolt connecting the first fixed plate and the first bottom plate 12 is screwed through the first bottom plate 12 and the first fixed plate, and the bolt connecting the second fixed plate and the second bottom plate 23 is screwed through the second bottom plate 23 and the second fixed plate.
[0051] Further, as shown in Figure 2 , Figure 3 , Figure 5 and Figure 6 , the spring 3 is provided in plurality, the plurality of springs 3 are arranged at intervals around the axis of the first cylinder body 11, and the first fixed plate and the second fixed plate are arranged in one-to-one correspondence with the spring 3. So that when the spring 3 drives the first cylinder body 11 to move from the first position to the second position, the second bottom plate 23 is uniformly stressed, and the moving piece 2 is prevented from being stuck due to uneven stress.
[0052] Optionally, as shown in Figure 2 , Figure 3 , Figure 5 and Figure 6 , the ship open cargo hold water spray nozzle protection structure provided by the embodiment further comprises a handle 6 arranged in the third cylinder body 22, and the handle 6 is fixedly connected to the inner wall of the third cylinder body 22. For the moving piece 2 located at the second position, the operator can pull the moving piece 2 out along the axial direction of the first cylinder body 11 through the handle 6, so that the moving piece 2 moves to the first position, when the moving piece 2 reaches the first position, the piston rod 42 of the single-acting hydraulic cylinder 4 automatically resets, the piston rod 42 reaches the third position, at this time, the piston rod 42 limits the moving piece 2, so that the moving piece 2 stays at the first position to protect the nozzle 10.
[0053] Optionally, as shown in Figure 2 , Figure 3 ,Figure 5 and Figure 6 As shown in the figure, the fixing member 1 further comprises a fourth cylinder 13, which is arranged in the first cylinder 11 and fixedly connected to the first bottom plate 12 at one end. The moving member 2 further comprises a fifth cylinder 24 and a limiting block 25. The fifth cylinder 24 is fixed to the second bottom plate 23 at one end and located outside the second cylinder 21 at the other end. The limiting block 25 is sleeved on the end of the fifth cylinder 24 outside the second cylinder 21 and slidingly arranged in the fourth cylinder 13. The limiting block 25 is fixedly connected to the fifth cylinder 24. In this embodiment, the limiting block 25 is welded to the fifth cylinder 24. The fourth cylinder 13, the fifth cylinder 24, the third cylinder 22, the second cylinder 21 and the first cylinder 11 are coaxially arranged. When the piston rod 42 is located at the third position, the piston rod 42 abuts against the side of the limiting block 25 close to the first bottom plate 12. When it is necessary to protect the nozzle 10, the limiting block 25 cooperates with the piston rod 42 to fix the moving member 2 at the first position. In this embodiment, the cylinder body 41 of the single-acting hydraulic cylinder 4 is fixed to the fourth cylinder 13. The ship open cargo hold water spray nozzle protection structure in this embodiment further comprises a copper pipe 7. The liquid inlet of the single-acting hydraulic cylinder 4 is communicated with the spray water pipe 20 through the copper pipe 7. The fourth cylinder 13 is used as a guide slide for the limiting block 25 and is used to fix the cylinder body 41 of the single-acting hydraulic cylinder 4.
[0054] Optionally, as shown in Figure 2 , Figure 3 and Figure 5 , the axis of the piston rod 42 is perpendicular to the axis of the fifth cylinder 24. The end of the piston rod 42 away from the cylinder body 41 is provided with an abutting plane 421. The single-acting hydraulic cylinder 4 is arranged between the first bottom plate 12 and the second bottom plate 23. The abutting plane 421 is arranged on the side of the piston rod 42 close to the second bottom plate 23. The abutting plane 421 is perpendicular to the axis of the first cylinder 11. When the moving member 2 is located at the first position, the side of the limiting block 25 close to the first bottom plate 12 abuts against the abutting plane 421. The abutting plane 421 perpendicular to the axis of the first cylinder 11 abuts against the side of the limiting block 25 close to the first bottom plate 12. The abutting plane 421 is in close contact with the side of the limiting block 25, so that the force of the limiting block 25 acting on the abutting plane 421 is perpendicular to the axis of the piston rod 42, thereby avoiding the force of the limiting block 25 acting on the piston rod 42 causing the piston rod 42 to retract, and ensuring that the moving member 2 stably stays at the first position.
[0055] Optionally, as shown in Figure 6 , Figure 3 , Figure 4 and Figure 6As shown, the end of the piston rod 42 away from the cylinder body 41 is also provided with an abutting inclined surface 422, which is arranged on the side of the piston rod 42 close to the first bottom plate 12, and is arranged at an angle with the axis of the piston rod 42. In the direction from the end of the piston rod 42 away from the cylinder body 41 to the end of the piston rod 42 close to the cylinder body 41, the abutting inclined surface 422 is inclined towards the first bottom plate 12. When the piston rod 42 is in the third position, and the moving piece 2 moves from the second position to the first position (i.e. during the movement), the limiting block 25 can abut against the abutting inclined surface 422. During the movement of the moving piece 2 from the second position to the first position by pulling the handle 6, when the limiting block 25 moves to the piston rod 42, the limiting block 25 abuts against the abutting inclined surface 422, so that the force of the limiting block 25 acting on the abutting inclined surface 422 can drive the piston rod 42 to retract, so that the piston rod 42 does not hinder the movement of the moving piece 2 from the second position to the first position.
[0056] Further, as shown in the figure, Figure 3 the top end of the limiting block 25 close to the second bottom plate 23 is provided with an abutting arc surface 251, and when the piston rod 42 is in the third position and the moving piece 2 moves from the second position to the piston rod 42, the abutting arc surface 251 abuts against the abutting inclined surface 422. In this embodiment, the abutting arc surface 251 is a circular arc surface, and the axis of the abutting arc surface 251 is perpendicular to the axis of the first cylinder body 11, and the axis of the abutting arc surface 251 surrounds the fifth cylinder body 24. By arranging the abutting arc surface 251, during the movement of the moving piece 2 from the second position to the first position, when the limiting block 25 moves to the piston rod 42, the force of the limiting block 25 acting on the piston rod 42 can better drive the piston rod 42 to retract, further facilitating the movement of the moving piece 2 from the second position to the first position by the operator.
[0057] Optionally, as shown in the figure, Figure 4 Figure 6 Figure 7 Figure 8 Figure 7 the single-acting hydraulic cylinder 4 further comprises a piston 43 and a return spring 44. The cylinder body 41 is provided with an inner cavity, and the piston 43 is arranged in the inner cavity. One end of the piston rod 42 extends out of the cylinder body 41, and the other end extends into the cylinder body 41 and is fixedly connected with the piston 43. The piston 43 divides the inner cavity into a hydraulic chamber 45 and a cavity 46. The return spring 44 is arranged in the cavity 46. The hydraulic chamber 45 is arranged at the end of the cylinder body 41 close to the fifth cylinder body 24, and the cavity 46 is arranged at the end of the cylinder body 41 away from the fifth cylinder body 24. The hydraulic chamber 45 is in communication with the spray pipe 20, and the cavity 46 is in communication with the atmosphere outside the single-acting hydraulic cylinder 4. It can be understood by those skilled in the art that the return spring 44 is used for the retraction of the piston rod 42. When the spray pipe 20 stops supplying spray water, the return spring 44 drives the piston 43 to move the piston rod 42 from the fourth position to the third position, until the piston rod 42 is retracted to the third position.
[0058] The ship open cargo hold water spray nozzle protection structure provided by the embodiment solves the problem that the cargo may collide with the water spray nozzle 10 during hoisting. The ship open cargo hold water spray nozzle protection structure does not hinder the formation of the spray water curtain, and effectively protects the cargo hold wall 100 when the open cargo hold is on fire. The power source of the single-acting hydraulic cylinder 4 is the water pressure of the spray water, and no additional liquid supply system needs to be added for the single-acting hydraulic cylinder 4.
[0059] The above merely describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and replacements without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.
Claims
1. A protection structure for a water spray head in an open cargo hold of a ship, characterized in that The fixed part, the moving part, the spring and the single-acting hydraulic cylinder are included. The fixed part is fixedly arranged on the cargo hold wall and extends into the cargo hold at one end and extends out of the cargo hold at the other end. The moving part is slidably arranged in the fixed part. The nozzle is exposed at the end of the fixed part extending into the cargo hold. The spray pipe is connected with the nozzle through the moving part. The moving part has a first position and a second position. When the moving part is in the first position, the nozzle is in the moving part. When the moving part is in the second position, the nozzle is exposed from the moving part. The spring connects the fixed part and the moving part. The single-acting hydraulic cylinder includes a cylinder body and a piston rod. The cylinder body is fixed to the fixed part. The piston rod has a third position and a fourth position. When the piston rod is in the third position and the moving part is in the first position, the piston rod abuts against the moving part to keep the moving part in the first position. When the piston rod is in the fourth position, the spring can drive the moving part in the first position to move to the second position. The liquid inlet of the single-acting hydraulic cylinder is communicated with the spray pipe. When the spray pipe is filled with spray water, the spray water can enter the single-acting hydraulic cylinder to make the piston rod of the single-acting hydraulic cylinder move from the third position to the fourth position.
2. The ship's open hatch water spray nozzle protection arrangement according to claim 1, characterized in that, The fixed part includes a first cylinder body and a first bottom plate. The first cylinder body has a first end and a second end. The first end of the first cylinder body penetrates through the cargo hold wall and is fixed to the cargo hold wall. The second end of the first cylinder body is located outside the cargo hold. The first bottom plate is arranged on the second end of the first cylinder body. The first bottom plate is provided with a first through hole. The spray pipe penetrates through the first through hole.
3. A ship's open hatch water spray nozzle protection arrangement according to claim 2, characterised in that, The moving part includes a second cylinder body, a third cylinder body and a second bottom plate. The second cylinder body is slidably arranged in the first cylinder body. The second cylinder body has a third end close to the first bottom plate and a fourth end away from the first bottom plate. The second bottom plate is arranged on the third end of the second cylinder body. The third cylinder body has a fifth end close to the second bottom plate and a sixth end away from the second bottom plate. The fifth end of the third cylinder body is inserted into the fourth end of the second cylinder body and is fixedly connected with the fourth end of the second cylinder body. When the moving part is in the first position, the second cylinder body is in the first cylinder body.
4. The ship open hatch water spray nozzle protection structure according to claim 3, wherein, The first cylinder body, the second cylinder body and the third cylinder body are all circular pipes. The outer diameter of the second cylinder body is not greater than the inner diameter of the first cylinder body. The outer diameter of the third cylinder body is not greater than the inner diameter of the second cylinder body.
5. A ship's open hatch water spray nozzle protection arrangement according to claim 4, characterised in that, The spring connects the first bottom plate and the second bottom plate.
6. The open hatch cargo bay water spray nozzle protection structure of claim 3, wherein, A handle is arranged in the third cylinder body. The handle is fixedly connected to the inner wall of the third cylinder body.
7. The open hatch cargo bay water spray nozzle protection structure of claim 4, wherein, The fixing part further comprises a fourth cylinder, which is arranged in the first cylinder and fixedly connected to the first bottom plate at one end, and the moving part further comprises a fifth cylinder and a limiting block, the fifth cylinder is fixed to the second bottom plate at one end and located outside the second cylinder at the other end, the limiting block is sleeved on the end of the fifth cylinder outside the second cylinder and slidably arranged in the fourth cylinder, the limiting block is fixedly connected to the fifth cylinder, the fourth cylinder, the fifth cylinder, the third cylinder, the second cylinder and the first cylinder are coaxially arranged, and when the piston rod is located at the third position, the piston rod abuts against one side of the limiting block close to the first bottom plate.
8. A ship's open hatch water spray nozzle protection arrangement according to claim 7, characterised in that, The axis of the piston rod is perpendicular to the axis of the fifth cylinder, one end of the piston rod away from the cylinder body is provided with an abutting plane, the abutting plane is arranged on the side of the piston rod close to the second bottom plate, the abutting plane is perpendicular to the axis of the first cylinder, and when the moving part is located at the first position, the side surface of the limiting block close to the first bottom plate abuts against the abutting plane.
9. A ship's open hatchway water spray nozzle protection arrangement according to claim 8, characterised in that, The end of the piston rod away from the cylinder body is further provided with an abutting inclined surface, the abutting inclined surface is arranged on the side of the piston rod close to the first bottom plate, the abutting inclined surface is arranged at an angle with the axis of the piston rod, and in the direction from the end of the piston rod away from the cylinder body to the end of the piston rod close to the cylinder body, the abutting inclined surface is inclined towards the first bottom plate; When the piston rod is located at the third position and the moving part moves from the second position to the first position, the limiting block can abut against the abutting inclined surface.
10. A ship's open cargo hold water spray nozzle protection structure according to claim 9, characterized in that, The end of the piston rod away from the cylinder body is further provided with an abutting inclined surface, the abutting inclined surface is arranged on the side of the piston rod close to the first bottom plate, the abutting inclined surface is arranged at an angle with the axis of the piston rod, and in the direction from the end of the piston rod away from the cylinder body to the end of the piston rod close to the cylinder body, the abutting inclined surface is inclined towards the first bottom plate; When the piston rod is located at the third position and the moving part moves from the second position to the first position, the limiting block can abut against the abutting inclined surface.
Citation Information
Patent Citations
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