Ship bow flagpole driving structure

Abstract

The utility model relates to the technical field of ship structures, and discloses a ship bow flagpole driving structure which comprises a fixing base, a direct-acting driving piece, a transmission rack, a transmission gear, a first gear shaft and a flagpole base. The output shaft and the transmission rack are fixedly assembled to drive the transmission rack to reciprocate, the first gear shaft is rotationally assembled on the fixing base, the transmission gear and the flagpole base are both assembled with the first gear shaft in a rotation stopping mode, the transmission gear is meshed with the transmission rack, and the flagpole base is used for assembling a main flagpole. An output shaft of the direct-acting driving piece pushes the transmission rack to reciprocate, the transmission rack drives the flagpole seat to rotate through the transmission gear and the first gear shaft, and then the main flagpole on the flagpole seat is driven to stand up or put down; a gear and a rack are adopted as a transmission structure, the device has the advantages of being large in transmission torque, stable and labor-saving, the mechanization degree is effectively improved, operation can be completed by one or two persons, the operation efficiency is improved, and potential safety hazards of operators are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ship structures, in particular to a ship bow flagpole driving structure. Background Art

[0002] With the gradual improvement of the technical level of ship equipment, the shipowner has put forward higher requirements for the safety of the bow flagpole itself, the safety of operators, the automation level of equipment operation, etc. At present, the bow flagpoles of some special ships adopt SA type reversible bow flagpoles or SB type supported bow flagpoles in accordance with the ship industry standards. The flagpole consists of a main flagpole, two auxiliary support poles and three sets of steel movable hinges. The main flagpole is a steel pipe with an outer diameter of 89 mm and a height of 6 meters, and the auxiliary support pole is a steel pipe with an outer diameter of 78 mm and a length of 3.5 meters. The three sets of movable hinges are assembled at the bottom of the main flagpole and the auxiliary support pole. The total weight of the reversible flagpole and accessories is about 100Kg.

[0003] When the above-mentioned bow flagpole is being retracted or lowered, it is pushed and rotated toward the stern with the movable hinge as the center to be laid down. For each retraction or lowering operation, 4 operators are first located at the movable hinges at the bottom ends of the left and starboard auxiliary support rods at the bow, loosen the fastening bolts and lift the auxiliary support rods. Then, another 8 operators are located under the main flagpole and cooperate to rotate the main flagpole along the length of the ship to jointly lay the flagpole horizontally down onto the bow deck. When the flagpole needs to be "standing up", the above-mentioned 12 operators still cooperate to repeat the above-mentioned actions to push the main flagpole in the reverse direction to make it reach the "vertical" state to complete the operation.

[0004] However, the bow flagpole needs at least 12 operators to work together during the retrieval and deployment, which takes a long time to prepare and has low work efficiency. In addition, the bow flagpole is located at the front end of the bow, where there are strong winds and high waves, large turbulence in the hull and small space, which poses a potential safety hazard to the operators during the retrieval and deployment operations. Utility Model Content

[0005] The utility model aims to provide a ship bow flagpole driving structure to solve the problems of long preparation time for operators, low working efficiency and potential safety hazards when the bow flagpole is retracted and released in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a ship bow flagpole driving structure, including a fixed seat, a direct-acting drive member, a transmission rack, a transmission gear, a first gear shaft and a flagpole seat, the fixed seat is used to be assembled on the ship deck, the direct-acting drive member is fixedly assembled on the fixed seat, the direct-acting drive member has an output shaft, the output shaft is fixedly assembled with the transmission rack to drive the transmission rack to reciprocate, the first gear shaft is rotatably assembled on the fixed seat, the transmission gear and the flagpole seat are both assembled with the first gear shaft to prevent rotation, the transmission gear is meshed with the transmission rack, and the flagpole seat is used to assemble the main flagpole.

[0007] Preferably, it also includes an emergency transmission device, which includes a second gear shaft, an emergency gear and an emergency drive member, the second gear shaft is rotatably assembled on the fixed seat, the emergency gear is non-rotatably assembled with the second gear shaft, the emergency gear is meshed with the transmission rack, and the emergency drive member is transmission connected to the emergency gear.

[0008] Preferably, two groups of meshing teeth are symmetrically arranged on the transmission rack, and the transmission gear and the emergency gear are symmetrically distributed with the transmission rack as the axis.

[0009] Preferably, the emergency drive component includes a driving gear and a third gear shaft, the third gear shaft is rotatably assembled on the fixed seat, the driving gear and the third gear shaft are non-rotatably assembled, the driving gear is meshed with the emergency gear, and the third gear shaft has a driving end extending to the outside of the fixed seat, and the driving end has a non-rotatable surface.

[0010] Preferably, the driving end is a quadrangular prism structure, and the rectangular side surface of the quadrangular prism structure forms the anti-rotation surface.

[0011] Preferably, the fixed seat includes a base plate, a cover plate, a front sealing plate, a rear sealing plate, a left sealing plate and a right sealing plate, the base plate and the cover plate are parallelly spaced apart, the front sealing plate, the rear sealing plate, the left sealing plate and the right sealing plate are connected between the base plate and the cover plate and form a closed assembly space, the direct-acting drive member, the transmission rack, the transmission gear and the first gear shaft are all assembled in the assembly space, the direct-acting drive member is fixedly assembled with the rear sealing plate, a connecting avoidance hole is provided at the connection between the cover plate and the front sealing plate, the avoidance hole is used to avoid the flagpole seat, and the hole edges at both ends of the avoidance hole cooperate with the flagpole seat stopper.

[0012] Preferably, it also includes a limit pin shaft, and the left sealing plate and the right sealing plate are also provided with coaxial insertion holes. When the limit pin shaft is inserted into the insertion hole, the avoidance hole is divided into two notches, and the limit pin shaft is in anti-rotation cooperation with the flagpole seat.

[0013] Preferably, the direct-acting drive member is a hydraulic cylinder, and the piston rod of the hydraulic cylinder forms the output shaft.

[0014] Preferably, the output shaft is threadedly connected with a movable nut, and one end of the movable nut away from the output shaft is fixedly assembled with the transmission rack.

[0015] Compared with the prior art, the bow flagpole driving structure of the utility model has the following beneficial effects: the main flagpole is fixedly assembled with a flagpole seat, and since the flagpole seat and the transmission gear are both assembled with the first gear shaft to prevent rotation, the transmission gear and the transmission rack are meshed, and the output shaft of the direct-acting driving member can push the transmission rack to move back and forth, and the transmission rack drives the flagpole seat to rotate via the transmission gear and the first gear shaft, thereby driving the main flagpole on the flagpole seat to stand up or fall down; the bow flagpole driving structure of the ship adopts a gear rack as a transmission structure, which has the characteristics of large transmission torque, stability and labor saving, and can effectively improve the degree of mechanization when combined with the direct-acting driving member, so that one or two people can complete the operation, thereby improving the operation efficiency and reducing the safety hazards of the operator; the set of driving structures can be installed on the ship as a modular design, saving the installation period, and the device can be arranged horizontally, vertically or inclined according to the different space requirements of the front end bulwark structure of the bow of different ship types, and has strong adaptability and overall aesthetic performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a ship bow flagpole driving structure of the utility model;

[0017] Figure 2 yes Figure 1 A schematic diagram of the structure of the bow flagpole driving structure of a ship omitting the main flagpole;

[0018] Figure 3 yes Figure 2 The fixing seat of the ship bow flagpole driving structure only retains the structural schematic diagram when the rear sealing plate is closed;

[0019] Figure 4 yes Figure 3 The main view of

[0020] Figure 5 yes Figure 2 A structural schematic diagram of a ship bow flagpole driving structure with the left sealing plate omitted from the fixing seat.

[0021] In the figure, 1, fixed seat, 11, bottom plate, 12, cover plate, 13, front sealing plate, 14, rear sealing plate, 15, left sealing plate, 16, right sealing plate, 17, avoidance hole, 18, insertion hole, 2, direct-acting drive member, 21, output shaft, 3, transmission rack, 4, transmission gear, 5, first gear shaft, 6, flagpole seat, 61, fixed plate, 62, connecting plate, 7, support bearing, 8, emergency transmission device, 81, second gear shaft, 82, emergency gear, 83, driving gear, 84, third gear shaft, 841, driving end, 842, anti-rotation surface, 9, limit pin shaft, 10, movable nut, 20, main flagpole. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] A preferred embodiment of a ship bow flagpole driving structure of the utility model is as follows: Figures 1 to 5 As shown, the ship bow flagpole driving structure includes a fixed seat 1, a direct-acting drive member 2, a transmission rack 3, a transmission gear 4, a first gear shaft 5 and a flagpole seat 6. The fixed seat 1 is used to be assembled on the ship deck, and provides an assembly station for the direct-acting drive member 2, the transmission rack 3, the transmission gear 4, the first gear shaft 5 and the flagpole seat 6. The flagpole seat 6 is used to assemble the main flagpole 20. The direct-acting drive member 2, the transmission rack 3, the transmission gear 4 and the first gear shaft 5 are used to drive the flagpole seat 6 to rotate, so that the main flagpole 20 is erected or laid down.

[0024] The direct-acting driving member 2 is fixedly assembled on the fixed seat 1, and the direct-acting driving member 2 has an output shaft 21, and the output shaft 21 is fixedly assembled with the transmission rack 3. The direct-acting driving member 2 drives the transmission rack 3 to perform linear reciprocating motion through the reciprocating movement of the output shaft 21, thereby driving the transmission gear 4 meshing with the transmission rack 3 to rotate. The direct-acting driving member 2 directly drives the transmission rack 3 to move through the output shaft 21, thereby reducing the number of transmission stages between the direct-acting driving member 2 and the transmission rack 3, reducing energy loss, and improving transmission efficiency.

[0025] The first gear shaft 5 is rotatably assembled on the fixed seat 1. In the present embodiment, the rotation axis of the first gear shaft 5 is perpendicular to the axis of the main flagpole 20. Support bearings 7 are respectively assembled between the two ends of the first gear shaft 5 and the fixed seat 1. The support bearings 7 are utilized to reduce the resistance of the first gear shaft 5 during rotation, and at the same time have a good supporting effect on the first gear shaft 5.

[0026] The transmission gear 4 and the flagpole seat 6 are both assembled with the first gear shaft 5 to prevent rotation. In the present embodiment, the first gear shaft 5, the transmission gear 4 and the flagpole seat 6 are all provided with key slots. During assembly, the transmission gear 4 and the flagpole seat 6 are mounted on the first gear shaft 5. The key slots on the first gear shaft 5, the transmission gear 4 and the flagpole seat 6 are coaxially distributed. The transmission gear 4 and the first gear shaft 5, as well as the flagpole seat 6 and the first gear shaft 5 are all connected by keys. The key connection is utilized to ensure the stability of the transmission. The gear rack transmission has the characteristics of large torque, stability and labor saving, thereby reducing the number of operators and the working efficiency.

[0027] The flagpole base 6 includes two fixed plates 61 and a connecting plate 62. The two fixed plates 61 are distributed in parallel and spaced apart. The connecting plate 62 is connected and fixed between the two fixed plates 61. The fixed plates 61 and the connecting plates 62 form a U-shaped structure. The main flagpole 20 is fixedly assembled with the connecting plate 62. The fixed plate 61 is sleeved on the first gear shaft 5. A keyway is provided on the fixed plate 61. The transmission gear 4 is sleeved on the first gear shaft 5 and is located between the two fixed plates 61.

[0028] The bow flagpole driving structure of the ship adopts a flagpole seat 6 to fix the main flagpole 20. Since the flagpole seat 6 and the transmission gear 4 are both fixedly assembled with the first gear shaft 5, the transmission gear 4 and the transmission rack 3 are meshed, and the output shaft 21 of the direct-acting drive member 2 can push the transmission rack 3 to move back and forth. The transmission rack 3 drives the flagpole seat 6 to rotate via the transmission gear 4 and the first gear shaft 5, and then drives the main flagpole 20 on the flagpole seat 6 to stand up or fall down; the bow flagpole driving structure of the ship adopts a gear rack as a transmission structure, which has the characteristics of large transmission torque, stability and labor saving. It can effectively improve the degree of mechanization when combined with the direct-acting drive member 2. One or two people can complete the operation, which improves the operation efficiency and reduces the safety hazards of the operator; the set of driving structure can be installed on the ship as a modular design, saving the installation period, and the device can be arranged horizontally, vertically or inclined according to the different space requirements of the front end bulwark structure of the bow of different ship types, with strong adaptability and overall aesthetic performance.

[0029] Preferably, it also includes an emergency transmission device 8, which includes a second gear shaft 81, an emergency gear 82 and an emergency drive member. The second gear shaft 81 is rotatably assembled on the fixed seat 1, the emergency gear 82 is non-rotatably assembled with the second gear shaft 81, the emergency gear 82 is meshed with the transmission rack 3, and the emergency drive member is transmission-connected to the emergency gear 82.

[0030] The emergency gear 82 of the emergency transmission device 8 meshes with the transmission rack 3, and the emergency drive member drives the emergency gear 82 to rotate. The emergency gear 82 can drive the transmission rack 3 to mesh, and then drive the flagpole seat 6 to rotate, so as to realize the erection and laying down of the main flagpole 20. The emergency drive member can be a manual drive member. After the direct drive member 2 fails, the emergency drive member can be driven by external force to continue to realize the retracting and laying down of the main flagpole 20, thereby improving the reliability of the equipment operation. In this embodiment, support bearings 7 are assembled between the two ends of the second gear shaft 81 and the fixed seat 1 to reduce the resistance during rotation.

[0031] Preferably, two groups of meshing teeth are symmetrically arranged on the transmission rack 3, and the transmission gear 4 and the emergency gear 82 are symmetrically distributed with the transmission rack 3 as the axis.

[0032] The transmission gear 4 and the emergency gear 82 are symmetrically distributed with the transmission rack 3 as the axis. The forces exerted by the transmission gear 4 and the emergency gear 82 on the transmission rack 3 are in the same line, so that the forces on the transmission rack 3 are balanced, and the stability of the transmission rack 3 during reciprocating movement is increased. In this embodiment, the transmission rack 3 extends horizontally, the transmission gear 4 is located on the upper side of the transmission rack 3, and the emergency gear 82 is located on the lower side of the transmission rack 3. The emergency gear 82 has a supporting effect on the transmission rack 3, and effectively transmits the vertical force exerted on the transmission rack 3 to the fixed seat 1, thereby ensuring the stability of the operation of the transmission rack 3 and the direct-acting drive member 2.

[0033] Preferably, the emergency driving member includes a driving gear 83 and a third gear shaft 84, the third gear shaft 84 is rotatably assembled on the fixed seat 1, the driving gear 83 and the third gear shaft 84 are non-rotatably assembled, the driving gear 83 is meshed with the emergency gear 82, and the third gear shaft 84 has a driving end 841 extending to the outside of the fixed seat 1, and the driving end 841 has a non-rotatable surface 842.

[0034] The emergency drive is formed by a driving gear 83 and a third gear shaft 84. The driving end 841 of the third gear shaft 84 located outside the fixed seat 1 can be connected to a hand-held tool such as a crank arm or a wrench through a rotation-stopping surface 842. The operator can drive the third gear shaft 84 to rotate through the hand-held tool, and then the driving gear 83 drives the emergency gear 82 and the driving rack to work, so as to realize the bow flagpole retracting and releasing operation. The structures such as the third gear shaft 84, the driving end 841 and the rotation-stopping surface 842 simplify the form of the emergency drive and facilitate the operation of the personnel. In this embodiment, the diameter of the driving gear 83 is smaller than the diameter of the emergency gear 82, and the operator also has a labor-saving effect when operating. Support bearings 7 are assembled between the two ends of the third gear shaft 84 and the fixed seat 1 to reduce the resistance during rotation.

[0035] Preferably, the driving end 841 is a quadrangular prism structure, and the rectangular side surface of the quadrangular prism structure forms a rotation-stopping surface 842 .

[0036] The driving end 841 adopts a quadrangular prism structure, which is easy to process and easy to cooperate with hand tools, simplifying the formation of the anti-rotation surface 842. In other embodiments, in order to increase the anti-misoperation effect, the driving end 841 can also be an irregular structure such as an elliptical cylinder, and the outer wall of the elliptical cylinder forms the anti-rotation surface 842.

[0037] Preferably, the fixing seat 1 comprises a base plate 11, a cover plate 12, a front sealing plate 13, a rear sealing plate 14, a left sealing plate 15 and a right sealing plate 16. The base plate 11 and the cover plate 12 are arranged in parallel and spaced apart. The front sealing plate 13, the rear sealing plate 14, the left sealing plate 15 and the right sealing plate 16 are connected between the base plate 11 and the cover plate 12 and form a closed assembly space. The direct-acting drive member 2, the transmission rack 3, the transmission gear 4 and the first gear shaft 5 are all assembled in the assembly space. The direct-acting drive member 2 is fixedly assembled with the rear sealing plate 14. A connected avoidance hole 17 is provided at the connection between the cover plate 12 and the front sealing plate 13. The avoidance hole 17 is used to avoid the flagpole seat 6. The hole edges at both ends of the avoidance hole 17 cooperate with the stoppers of the flagpole seat 6.

[0038] The bottom plate 11, cover plate 12, front sealing plate 13, rear sealing plate 14, left sealing plate 15 and right sealing plate 16 of the fixing seat 1 form a closed assembly space, and the fixing seat 1 has a protective function for the direct-acting drive member 2, transmission rack 3, transmission gear 4, first gear shaft 5 and emergency transmission device 8 located inside. An avoidance hole 17 is provided at the connection between the cover plate 12 and the front sealing plate 13, and the avoidance hole 17 provides a movable space for the rotation of the flagpole seat 6 to avoid interference between the fixing seat 1 and the flagpole seat 6.

[0039] The flagpole base 6 has two states during its rotational stroke: the main flagpole 20 is erected or laid down. In both cases, the rotational angle of the flagpole base 6 is 90 degrees. The hole edges at both ends of the avoidance hole 17 cooperate with the stoppers of the flagpole base 6, which has a limiting effect on the rotational stroke of the flagpole base 6, ensuring that the main flagpole 20 is erected or laid down after the flagpole base 6 is rotated to the extreme positions at both ends, which is easy to use.

[0040] Preferably, it also includes a limit pin 9, and coaxial insertion holes 18 are provided on the left sealing plate 15 and the right sealing plate 16. When the limit pin 9 is inserted into the insertion hole 18, the avoidance hole 17 is divided into two gaps, and the limit pin 9 is anti-rotationally matched with the flagpole seat 6.

[0041] The insertion hole 18 is located at the corners of the left sealing plate 15 and the right sealing plate 16 near the cover plate 12 and the front sealing plate 13. After the limit pin 9 is inserted into the insertion hole 18, the limit pin 9 divides the avoidance hole 17 into two gaps, one of which is on the cover plate 12 and the other is on the front sealing plate 13, respectively corresponding to the states when the main flagpole 20 is erected and laid down. The limit pin 9 is matched with the flagpole seat 6 to stop rotation. When the flagpole seat 6 rotates to the main flagpole 20 to stand up or the flagpole seat 6 rotates to the main flagpole 20 to be laid down, the limit pin 9 and the flagpole seat 6 stop rotation in opposite directions. Through one limit pin 9, the flagpole seats 6 in two different positions can be simultaneously stopped and assembled, which is convenient to use.

[0042] The limit pin 9 is inserted into the insertion hole 18. When the flagpole seat 6 needs to rotate, the limit pin 9 can be pulled out to ensure the rotation of the flagpole seat 6. In addition, since the limit pin 9 is matched with the flagpole seat 6 to prevent rotation, the limit pin 9 is inserted into the insertion hole 18 after the flagpole seat 6 rotates to the right position. The limit pin 9 and the hole edge of the avoidance hole 17 cooperate to limit the rotation of the flagpole seat 6 in two directions at the same time. When the ship shakes, the rotation of the flagpole seat 6 is limited by the limit pin 9 and the hole edge of the avoidance hole 17, and the transmission gear 4 and the transmission rack 3 are not subjected to force, thereby extending the service life of the transmission gear 4, the transmission rack 3, and the direct drive member 2.

[0043] Preferably, the direct-acting driving member 2 is a hydraulic cylinder, and the piston rod of the hydraulic cylinder forms the output shaft 21 .

[0044] The hydraulic cylinder is used as the direct-acting drive component 2. The ship bow flagpole driving structure can be equipped with a portable hydraulic pump or an electric hydraulic pump station as the driving structure, that is, the operation mode is selected according to the actual situation, and the hydraulic pipe quick connector of the driving mechanism is quickly connected to the corresponding interface of the hydraulic cylinder. It has good economy and a wide selection space.

[0045] Preferably, the output shaft 21 is threadedly connected with a movable nut 10 , and one end of the movable nut 10 away from the output shaft 21 is fixedly assembled with the transmission rack 3 .

[0046] The output shaft 21 is threadedly connected with a movable nut 10, and the transmission rack 3 is fixedly assembled by the movable nut 10. When the hydraulic cylinder or the transmission rack 3 is damaged and needs to be repaired, the transmission rack 3 and the direct-acting drive member 2 can be disassembled through the movable nut 10, which has strong applicability.

[0047] In summary, the embodiment of the utility model provides a ship bow flagpole driving structure, which adopts a flagpole seat to fix the main flagpole. Since the flagpole seat and the transmission gear are both fixedly assembled with the first gear shaft, the transmission gear and the transmission rack are meshed, and the output shaft of the direct-acting drive member can push the transmission rack to move back and forth, and the transmission rack drives the flagpole seat to rotate via the transmission gear and the first gear shaft, thereby driving the main flagpole on the flagpole seat to stand up or put down; the ship bow flagpole driving structure adopts a gear rack as a transmission structure, which has the characteristics of large transmission torque, stability and labor saving. It can effectively improve the degree of mechanization when combined with the direct-acting drive member. One or two people can complete the operation, which improves the operation efficiency and reduces the safety hazards of operators; the set of driving structure can be installed on the ship as a modular design, saving the installation period, and the device can be arranged horizontally, vertically or inclined according to the different space requirements of the front end bulwark structure of the bow of different ship types, with strong adaptability and overall aesthetic performance.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A ship bow flagpole driving structure, characterized in that: The invention comprises a fixed seat (1), a direct-acting driving member (2), a transmission rack (3), a transmission gear (4), a first gear shaft (5) and a flagpole seat (6); the fixed seat (1) is used for being assembled on a ship deck; the direct-acting driving member (2) is fixedly assembled on the fixed seat (1); the direct-acting driving member (2) has an output shaft (21); the output shaft (21) is fixedly assembled with the transmission rack (3) to drive the transmission rack (3) to move back and forth; the first gear shaft (5) is rotatably assembled on the fixed seat (1); the transmission gear (4) and the flagpole seat (6) are both fixedly assembled with the first gear shaft (5); the transmission gear (4) is meshed with the transmission rack (3); and the flagpole seat (6) is used for assembling a main flagpole (20).

2. The ship bow flagpole driving structure according to claim 1, characterized in that: The invention also comprises an emergency transmission device (8), wherein the emergency transmission device (8) comprises a second gear shaft (81), an emergency gear (82) and an emergency driving member, wherein the second gear shaft (81) is rotatably mounted on the fixing seat (1), the emergency gear (82) is non-rotatably mounted on the second gear shaft (81), the emergency gear (82) is meshed with the transmission rack (3), and the emergency driving member is transmission-connected with the emergency gear (82).

3. The ship bow flagpole driving structure according to claim 2, characterized in that: Two groups of meshing teeth are symmetrically arranged on the transmission rack (3), and the transmission gear (4) and the emergency gear (82) are symmetrically distributed with the transmission rack (3) as the axis.

4. The ship bow flagpole driving structure according to claim 2, characterized in that: The emergency driving member comprises a driving gear (83) and a third gear shaft (84); the third gear shaft (84) is rotatably mounted on the fixing seat (1); the driving gear (83) and the third gear shaft (84) are non-rotatably mounted; the driving gear (83) is meshed with the emergency gear (82); the third gear shaft (84) has a driving end (841) extending to the outside of the fixing seat (1); and the driving end (841) has a non-rotatable surface (842).

5. The ship bow flagpole driving structure according to claim 4, characterized in that: The driving end (841) is a quadrangular prism structure, and the rectangular side surface of the quadrangular prism structure forms the anti-rotation surface (842).

6. The ship bow flagpole driving structure according to any one of claims 1 to 5, characterized in that: The fixing seat (1) comprises a bottom plate (11), a cover plate (12), a front sealing plate (13), a rear sealing plate (14), a left sealing plate (15) and a right sealing plate (16); the bottom plate (11) and the cover plate (12) are arranged in parallel and spaced apart; the front sealing plate (13), the rear sealing plate (14), the left sealing plate (15) and the right sealing plate (16) are connected between the bottom plate (11) and the cover plate (12) to form a closed assembly space; the direct-acting drive The moving part (2), the transmission rack (3), the transmission gear (4), and the first gear shaft (5) are all assembled in the assembly space. The direct-acting driving part (2) is fixedly assembled with the rear sealing plate (14). A communicating avoidance hole (17) is provided at the connection between the cover plate (12) and the front sealing plate (13). The avoidance hole (17) is used to avoid the flagpole seat (6). The hole edges at both ends of the avoidance hole (17) cooperate with the stoppers of the flagpole seat (6).

7. The ship bow flagpole driving structure according to claim 6, characterized in that: It also includes a limit pin (9), and a plug-in hole (18) is provided at the connection between the cover plate (12) and the front sealing plate (13). When the limit pin (9) is inserted into the plug-in hole (18), the avoidance hole (17) is divided into two notches, and the limit pin (9) is engaged with the flagpole seat (6) to prevent rotation.

8. The ship bow flagpole driving structure according to any one of claims 1 to 5, characterized in that: The direct-acting drive member (2) is a hydraulic cylinder, and the piston rod of the hydraulic cylinder forms the output shaft (21).

9. The ship bow flagpole driving structure according to claim 8, characterized in that: The output shaft (21) is threadedly connected with a movable nut (10), and one end of the movable nut (10) away from the output shaft (21) is fixedly assembled with the transmission rack (3).

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