Retractable convenient trestle for full-circle tug

Abstract

The application discloses a retractable convenient pier of a full-rotation tugboat, which comprises a front-side bridge deck folding and unfolding part, a rear-side bridge deck folding and unfolding part and a pier protection folding and unfolding part. The front-side bridge deck folding and unfolding part comprises a front-side winding power part, a front-side winding transmission part and a winding bridge deck part. The front-side winding power part is arranged on a bridge deck, and the front-side winding transmission part is used for folding and unfolding the winding bridge deck part. The rear-side bridge deck folding and unfolding part comprises a rear-side winding power part and a rear-side winding transmission part. The rear-side winding power part is arranged on a forecastle deck, and is connected with the rear-side winding transmission part through transmission to fold and unfold the winding bridge deck part. The pier protection folding and unfolding part is arranged on the front-side bridge deck folding and unfolding part and the rear-side bridge deck folding and unfolding part to protect both sides of the winding bridge deck part. The application has high automation degree, is convenient to use, can automatically change height according to the need of pushing of a tugboat and automatically move the position along the tugboat laterally according to the need.

Description

Technical Field

[0001] The present invention relates to the technical field of ship equipment, and more particularly to a retractable and convenient trestle for a fully revolving tugboat. Background Art

[0002] The trestles used on ships are used to connect decks at different heights. The trestles used on full-revolving tugboats are frequently used on the forecastle deck during pushing operations. Typically, when reaching the forecastle deck from the bridge deck or the bridge deck on a tugboat, crew members must first access the anchor winch platform via the inclined ladder at the front, and then access the forecastle deck via the inclined ladder at the rear. This low accessibility affects the tugboat's operational efficiency. Furthermore, when pushing different tonnage vessels or different parts of a vessel, the height of the trestles must be adjusted to prevent the trestle guardrails from contacting the towed vessel and causing an accident. Summary of the Invention

[0003] In order to overcome the above-mentioned defects, the present invention provides a retractable and convenient trestle for a fully revolving tugboat, which specifically adopts the following technical solutions:

[0004] A retractable and convenient trestle for a fully revolving tugboat, comprising:

[0005] A front bridge deck retracting and extending member is provided on the bridge deck, comprising a front winding power member, a front winding transmission member, and a winding bridge deck member. The front winding power member is provided on the bridge deck, and the front winding transmission member retracts and extends the winding bridge deck member on the front winding power member.

[0006] A rear bridge deck retracting and extending member is provided on the forecastle deck and comprises a rear winding power member and a rear winding transmission member. The rear winding power member completes the retraction and extension of the winding bridge deck member by driving the rear winding transmission member connected to the winding bridge deck member on the forecastle deck;

[0007] A trestle protection retractable member is provided on the front bridge deck retractable member and the rear bridge deck retractable member to protect both sides of the wound bridge deck member;

[0008] The front winding power member includes a front winding frame, a front winding shaft and a front winding motor. The front winding frame is arranged on the side of the bridge deck. A first sliding groove is provided on the side wall of the front winding shaft. The front winding shaft is provided on the front winding frame through and through. The front winding motor is provided on the front winding frame, and the rotating shaft of the front winding motor is transmission-connected to one end of the front winding shaft.

[0009] The front winding transmission member includes a front winding transmission tube and a front winding transverse moving member, the front winding transmission tube is sleeved on the front winding shaft, and a first sliding block on the inner wall of the front winding transmission tube is engaged with the first sliding groove;

[0010] The front side winding transverse moving member includes a front side transverse moving motor, a front side transverse moving shaft and a front side transverse moving transmission block, the front side transverse moving motor is arranged on the free end of the front side winding shaft, one end of the front side transverse moving shaft is arranged on the rotating shaft of the front side transverse moving motor, and the other end of the front side transverse moving shaft is inserted into the front side transverse moving hole on the front winding shaft; one end of the front side transverse moving transmission block is sleeved on the front side transverse moving shaft, and the front side transverse moving transmission block is engaged with the front side transverse moving shaft at the sleeve; the other end of the front side transverse moving transmission block passes through the front side transverse moving long through hole set between the front side transverse moving hole and the outer wall of the front winding shaft and is connected to the inner wall of the front winding transmission tube.

[0011] Preferably, the winding bridge deck member includes a bridge deck steel cable, a bridge deck support plate, a position locking member and a bridge deck tightening member, one end of the bridge deck steel cable is connected and wound around one end of the front winding transmission tube, and the two bridge deck steel cables are respectively located at both ends of the front winding transmission tube; the bridge deck support plate is in the shape of a rectangular plate, a connecting block is provided on one side of the bridge deck support plate, and a connecting groove is provided on the other side of the bridge deck support plate, the connecting groove cooperates with the connecting block, and the side surfaces at both ends of the bridge deck support plate are horizontally mounted on the two bridge deck steel cables, and the bridge deck support plate can slide on the bridge deck steel cables; a plurality of the bridge deck support plates are evenly distributed along the length direction of the bridge deck steel cables.

[0012] Preferably, the position locking component includes a position locking tube, a magnetic coil and a position locking shaft, one end of the position locking tube is arranged on an end face of the bridge deck support plate located at the end, the magnetic coil is embedded in the position locking tube, and the position locking shaft is embedded in the position locking tube.

[0013] Preferably, the bridge deck compression piece includes a relay plate and a relay buckle plate, the relay plate is arranged on the bottom surface of the bridge deck support plate located at the end, the relay buckle plate is in the shape of an arc plate, and the relay buckle plate is arranged on the relay plate.

[0014] Preferably, the rear winding power member includes a rear winding rack, a rear winding shaft and a rear winding motor, the rear winding rack is arranged on the side of the forecastle deck, a second sliding groove is arranged on the side wall of the rear winding shaft, the rear winding shaft is arranged on the rear winding rack, the rear winding motor is arranged on the rear winding rack, and the rotating shaft of the rear winding motor is connected to one end of the rear winding shaft;

[0015] The rear winding transmission member includes a rear winding transmission tube and a rear winding transverse moving member, the rear winding transmission tube is sleeved on the rear winding shaft, and the second sliding block on the inner wall of the rear winding transmission tube cooperates with the second sliding groove; the rear winding transmission tube is wound and connected with the other ends of the two bridge deck steel cables; the rear winding transverse moving member has the same structure as the front winding transverse moving member, and the rear winding transverse moving member drives the rear winding transmission tube to move axially on the rear winding shaft.

[0016] Preferably, the trestle protective retractable component includes a front protective component, a rear protective component and a protective cable, the front protective component is arranged on the front bridge deck retractable component, and the rear protective component is arranged on the rear bridge deck retractable component; the front protective component includes a protective seat, a protective rod, a pre-tightening sleeve and a protective retraction rod, the protective seat is sleeved on the front winding shaft, and the protective seat is connected to the end of the front winding transmission pipe in an arc shape through a follower connecting rod, one end of the protective rod is arranged on the side of the protective seat, and the side of the protective rod is provided with A first dovetail groove, in which a first dovetail block is embedded, the protective retractable rod is an automatic telescopic rod, and the top of the protective retractable rod is connected to the first dovetail block; a second dovetail block is provided on the side wall of the bottom end of the protective retractable rod, and the protective retractable rod is embedded in the second dovetail groove on the bridge deck through the second dovetail block; a torsion spring is embedded in the pre-tightening sleeve, one end of the torsion spring is connected to the inner wall of the pre-tightening sleeve, the pre-tightening sleeve is sleeved on the other end of the protective rod, and the other end of the torsion spring is fixedly connected to the protective rod.

[0017] Preferably, the rear side protective member has the same structure as the front side protective member, and the rear side protective member is arranged on the rear side winding shaft; one end of the protective cable is connected and wound around the pre-tightening sleeve, and the other end of the protective cable is connected and wound around the pre-tightening sleeve of the rear side protective member.

[0018] The present invention has at least the following beneficial effects:

[0019] 1) The retractable and portable trestle of the fully revolving tugboat of the present invention has a high degree of automation and is easy to use. It can automatically change its height according to the pushing needs of the tugboat and automatically move its position laterally along the tugboat as needed;

[0020] 2) The retractable and convenient trestle of the fully revolving tugboat of the present invention is provided with a front winding power member, a front winding transmission member, a winding bridge member, a rear winding power member, and a rear winding transmission member. The front winding power member cooperates with the front winding transmission member and the rear winding power member cooperates with the rear winding transmission member to unfold and retract the winding bridge member, thereby meeting the needs of tugboat pushing and ensuring portability.

[0021] 3) The retractable and convenient trestle of the fully revolving tugboat of the present invention is provided with a trestle protection retractable member, which can be folded to adjust its height according to the pushing needs of the tugboat, and the trestle protection retractable member can still keep the protective cable taut after folding to facilitate normal deck operations.

[0022] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a front view of the retractable and convenient trestle of the fully revolving tugboat of the present invention;

[0024] Figure 2 A top view of the retractable and convenient trestle of the fully revolving tugboat of the present invention;

[0025] Figure 3 This is a schematic diagram of the front three-dimensional structure of the retractable and convenient trestle of the fully revolving tugboat of the present invention;

[0026] Figure 4 This is a schematic diagram of the rear three-dimensional structure of the retractable and convenient trestle of the fully revolving tugboat of the present invention;

[0027] Figure 5 The present invention is a schematic diagram of the front side of the retractable and convenient trestle of the fully revolving tugboat when viewed from above.

[0028] Among them: 1-bridge deck, 2-forecastle deck, 3-front winding rack, 4-front winding shaft, 5-front winding motor, 6-front winding transmission pipe, 7-front lateral movement motor, 8-bridge deck steel cable, 9-bridge deck support plate, 10-connecting block, 11-position locking tube, 12-relay plate, 13-relay buckle plate, 14-rear winding rack, 15-rear winding shaft, 16-rear winding motor, 17-rear winding transmission pipe, 18-rear lateral movement motor, 19-protective cable, 20-protective seat, 21-protective rod, 22-pre-tightening sleeve, 23-protective retraction rod, 24-rear protective part, 25-anchor windlass platform. DETAILED DESCRIPTION

[0029] The technical solutions of the present invention will be described in detail below by way of embodiments with reference to the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0030] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0031] according to Figure 1-Figure 5 As shown, a retractable and convenient trestle for a fully rotating tugboat includes a front bridge deck retracting and extending member, a rear bridge deck retracting and extending member, and a trestle protection retracting and extending member. The front bridge deck retracting and extending member is arranged on the bridge deck 1, the rear bridge deck retracting and extending member is arranged on the forecastle deck 2, and the trestle protection retracting and extending member is arranged on the front bridge deck retracting and extending member and the rear bridge deck retracting and extending member. The front bridge deck retracting and extending member includes a front winding power member, a front winding transmission member, and a winding bridge deck member. The front winding power member is arranged on the bridge deck 1, the front winding transmission member is arranged on the front winding power member, and the winding bridge deck member is arranged on the front winding transmission member. The front winding power member includes a front winding frame 3, a front winding shaft 4, and a front winding motor 5. The front winding frame 3 is in the shape of a rectangular plate, and one side of the front winding frame 3 is vertically fixed on the side of the bridge deck 1. The two front winding frames 3 are parallel to each other and distributed on both sides of the side of the bridge deck 1. A first sliding groove is provided on the side wall of the front winding shaft 4, and the longitudinal line of the first sliding groove is parallel to the axis of the front winding shaft 4. The two ends of the front winding shaft 4 are respectively horizontally passed through the front winding frame 3, and the front winding shaft 4 can rotate on the front winding frame 3. The front winding motor 5 is provided on the front winding frame 3, and the rotating shaft of the front winding motor 5 is connected to one end of the front winding shaft 4, so that the front winding motor 5 can drive the front winding sleeve shaft to rotate on the front winding frame 3.

[0032] The front winding transmission member includes a front winding transmission tube 6 and a front winding transverse moving member, both of which are arranged on the front winding shaft 4. The front winding transmission tube 6 is shorter than the front winding shaft 4, is sleeved on the front winding shaft 4, and a first sliding block on the inner wall of the front winding transmission tube 6 cooperates with the first sliding groove, so that the front winding transmission tube 6 can slide axially along the front winding shaft 4 through the first sliding block and the first sliding groove, and be rotated by the front winding shaft 4.

[0033] The front side winding transverse moving member includes a front side transverse moving motor 7, a front side transverse moving shaft and a front side transverse moving transmission block, the front side transverse moving motor 7 is arranged on the front side winding shaft 4, the front side transverse moving shaft is arranged on the front side transverse moving motor 7, and the front side transverse moving transmission block is arranged on the front side transverse moving shaft. The front side transverse moving motor 7 is fixedly arranged on the free end of the front side winding shaft 4, and rotates as the front side winding shaft 4 rotates. As an option, the front side transverse moving shaft is a screw, one end of the front side transverse moving shaft is fixedly arranged on the rotating shaft of the front side transverse moving motor 7, and the other end of the front side transverse moving shaft is inserted into the front side transverse moving hole on the front winding shaft 4, the axis of the front side transverse moving hole coincides with the axis of the front winding shaft 4, and a front side transverse moving long strip through hole is arranged between the front side transverse moving hole and the outer wall of the front winding shaft 4. One end of the front lateral movement transmission block is mounted on the front lateral movement shaft, and the front lateral movement transmission block and the front lateral movement shaft are meshed at the mounting point. The other end of the front lateral movement transmission block passes through the front lateral movement elongated through hole and is fixedly connected to the inner wall of the front winding transmission tube 6. When the front lateral movement motor 7 drives the front lateral movement shaft to rotate, the front lateral movement transmission block drives the front winding transmission tube 6 to move axially along the front winding shaft 4.

[0034] The winding bridge deck member includes a bridge deck steel cable 8, a bridge deck support plate 9, a position locking member, and a bridge deck compression member. The bridge deck steel cable 8 is arranged on the front winding transmission tube 6, and the bridge deck support plate 9 is arranged on the bridge deck steel cable 8. The position locking member and the bridge deck compression member are both arranged on the bridge deck support plate 9. There are two bridge deck steel cables 8. One end of the bridge deck steel cable 8 is fixedly connected and wound around one end of the front winding transmission tube 6, and the other end of the bridge deck steel cable 8 is fixedly connected and wound around the other end of the front winding transmission tube 6. The bridge deck support plate 9 is in the shape of a rectangular plate. A connecting block 10 is arranged on one side of the bridge deck support plate 9, and a plurality of the connecting blocks 10 are evenly distributed along the axial direction. A connecting groove is arranged on the other side of the bridge deck support plate 9. The connecting groove is symmetrical with the connecting block 10, and a plurality of the connecting grooves are evenly distributed along the axial direction. The side surfaces of the bridge deck support plate 9 are horizontally mounted on the two bridge deck cables 8, and the bridge deck support plate 9 is capable of sliding on the bridge deck cables 8. A plurality of bridge deck support plates 9 are provided, and the plurality of bridge deck support plates 9 are evenly distributed along the length of the bridge deck cables 8. Furthermore, a rope of a predetermined length is connected between adjacent bridge deck support plates 9 to maintain a predetermined spacing when the plurality of bridge deck support plates 9 are deployed.

[0035] The position locking component includes a position locking tube 11, a magnetic coil and a position locking shaft. One end of the position locking tube 11 is fixedly set on one end surface of the bridge deck support plate 9 located at the end, the magnetic coil is fixedly embedded in the position locking tube 11, and the position locking shaft is embedded in the position locking tube 11. When direct current is passed into the magnetic coil to generate a magnetic field, it will push one end of the position locking shaft to tightly squeeze onto the bridge deck steel cable 8, so as to lock the bridge deck support plate 9 located at the end onto the bridge deck steel cable 8.

[0036] The bridge deck tightening member includes a relay plate 12 and a relay buckle plate 13. One side of the relay plate 12 is vertically fixed on the bridge deck support plate 9, and the relay buckle plate 13 is arranged on the relay plate 12. The relay plate 12 is in the shape of a rectangular plate, and one side of the relay plate 12 is vertically fixed on the bottom surface of the bridge deck support plate 9 located at the end. The relay buckle plate 13 is in the shape of an arc plate, and the arc surface of the relay buckle plate 13 is fixed on the relay plate 12. The bridge deck tightening member cooperates with the rear side bridge deck retracting member to move and squeeze the multiple bridge deck support plates 9 along the steel cable, and the adjacent bridge deck support plates 9 are squeezed and inserted into the connecting groove through the connecting block 10 to connect the multiple bridge deck support plates 9 into one, thereby improving the stability of the bridge deck.

[0037] The rear bridge deck retracting and unfolding member includes a rear winding power member and a rear winding transmission member. The rear winding power member is arranged on the fore deck 2, and the rear winding transmission member is arranged on the rear winding power member. The rear winding power member includes a rear winding rack 14, a rear winding shaft 15 and a rear winding motor 16. The rear winding rack 14 is in the shape of a rectangular plate, and one side of the rear winding rack 14 is vertically fixed on the side of the fore deck 2. The two rear winding racks 14 are distributed parallel to each other on both sides of the side of the fore deck 2. A second sliding groove is provided on the side wall of the rear winding shaft 15, and the longitudinal line of the second sliding groove is parallel to the axis of the rear winding shaft 15. The two ends of the rear winding shaft 15 are respectively horizontally passed through the rear winding rack 14, and the rear winding shaft 15 can rotate on the rear winding rack 14. The rear winding motor 16 is arranged on the rear winding frame 14 , and the rotating shaft of the rear winding motor 16 is connected to one end of the rear winding shaft 15 , so that the rear winding motor 16 can drive the rear winding sleeve shaft to rotate on the rear winding frame 14 .

[0038] The rear winding transmission member includes a rear winding transmission tube 17 and a rear winding transverse moving member, and the rear winding transmission tube 17 and the rear winding transverse moving member are both arranged on the rear winding shaft 15. The length of the rear winding transmission tube 17 is less than that of the rear winding shaft 15, and the rear winding transmission tube 17 is sleeved on the rear winding shaft 15, and the second sliding block on the inner wall of the rear winding transmission tube 17 cooperates with the second sliding groove. The rear winding transmission tube 17 can slide axially along the rear winding shaft 15 through the second sliding block and the second sliding groove, and is rotated by the rear winding shaft 15. The rear winding transmission tube 17 is fixedly wound and connected to the other ends of the two bridge deck cables 8, and the radius of the rear winding transmission tube 17 is not greater than the inner diameter of the relay buckle plate 13.

[0039] The rear winding transverse moving member includes a rear transverse moving motor 18, a rear transverse moving shaft and a rear transverse moving transmission block, wherein the rear transverse moving motor 18 is arranged on the rear winding shaft 15, the rear transverse moving shaft is arranged on the rear transverse moving motor 18, and the rear transverse moving transmission block is arranged on the rear transverse moving shaft. The rear transverse moving motor 18 is fixedly arranged on the free end of the rear winding shaft 15 and rotates as the rear winding shaft 15 rotates. As an option, the rear transverse moving shaft is a screw, one end of the rear transverse moving shaft is fixedly arranged on the rotating shaft of the rear transverse moving motor 18, and the other end of the rear transverse moving shaft is inserted into the rear transverse moving hole on the rear winding shaft 15, the axis of the rear transverse moving hole coincides with the axis of the rear winding shaft 15, and a rear transverse moving long strip through hole is arranged between the rear transverse moving hole and the outer wall of the rear winding shaft 15. One end of the rear lateral movement transmission block is mounted on the rear lateral movement shaft, and the rear lateral movement transmission block and the rear lateral movement shaft are meshed at the mounting point. The other end of the rear lateral movement transmission block passes through the rear lateral movement elongated through hole and is fixedly connected to the inner wall of the rear winding transmission tube 17. When the rear lateral movement motor 18 drives the rear lateral movement shaft to rotate, the rear winding transmission tube 17 is driven axially along the rear winding shaft 15 via the rear lateral movement transmission block.

[0040] The pier protection and retractable components include a front protection component, a rear protection component 24, and a protection cable 19. The front protection component is mounted on the front bridge deck retractable component, while the rear protection component 24 is mounted on the rear bridge deck retractable component. The front protection component includes a protection seat 20, a protection rod 21, a pre-tightening sleeve 22, and a protection retraction rod 23. The protection seat 20 is mounted on the front winding shaft 4, the protection rod 21 is mounted on the protection seat 20, the pre-tightening sleeve 22 is mounted on the protection rod 21, and the protection retraction rod 23 is mounted on the bridge deck 1. The protective seat 20 is tubular and is mounted on the front winding shaft 4. The protective tube is capable of relative rotation with the front winding shaft 4. The protective seat 20 is connected to the end of the front winding transmission tube 6 via a follower connecting rod, allowing the protective seat 20 to follow the front winding transmission tube 6 in axial movement along the front winding shaft 4 and to rotate relative to the front winding transmission tube 6 via the follower connecting rod. Specifically, one end of the follower connecting rod is fixedly connected to a side of the protective seat 20, and the other end of the follower connecting rod is embedded in an annular groove on an end surface of the front winding transmission tube 6, with the axis of the annular groove coinciding with the axis of the front winding transmission tube 6. This allows the other end of the follower connecting rod to rotate relative to the front winding transmission tube 6 within the annular groove. The front winding transmission tube 6 pulls the protective seat 20 to move axially along the front winding shaft 4 via the annular groove and the follower connecting rod. One end of the protective rod 21 is fixedly mounted on the side of the protective seat 20. A first dovetail groove is provided on the side of the protective rod 21. A first dovetail block is embedded in the first dovetail groove. The length of the first dovetail block is smaller than that of the first dovetail groove, allowing the first dovetail block to slide within the first dovetail groove. The protective retractable rod 23 is an automatically retractable rod, with the top end of the protective retractable rod 23 rotatably connected to the first dovetail block. A second dovetail block is provided on the sidewall of the bottom end of the protective retractable rod 23. The protective retractable rod 23 is embedded in the second dovetail groove on the bridge deck 1 through the second dovetail block. This allows the protective retractable rod 23 to move axially along the front winding shaft 4 through the second dovetail block and the second dovetail groove. When the protective retractable rod 23 is extended, it pushes down the protective rod 21 through the first dovetail block and the first dovetail groove, thereby lowering the height of the retractable portable trestle of the fully revolving tugboat as needed to meet the tugboat push requirements.

[0041] The pre-tightening sleeve 22 is barrel-shaped and contains a torsion spring. One end of the torsion spring is fixedly connected to the inner wall of the pre-tightening sleeve 22. The pre-tightening sleeve 22 is sleeved onto the other end of the protective rod 21, and the other end of the torsion spring is fixedly connected to the protective rod 21. Two sets of front side guards are provided, one on each side of the front winding transmission tube 6.

[0042] The rear side guard 24 has the same structure as the front side guard and is mounted on the rear winding shaft 15. Two sets of rear side guards 24 are provided, one on each side of the rear winding transmission tube 17. One end of the protective cable 19 is connected and wound around the pre-tensioning sleeve 22, while the other end is connected and wound around the pre-tensioning sleeve 22 of the rear side guard 24.

[0043] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A retractable and portable trestle for a fully revolving tugboat, characterized in that: include: A front bridge deck retracting and extending member is provided on the bridge deck, comprising a front winding power member, a front winding transmission member, and a winding bridge deck member. The front winding power member is provided on the bridge deck, and the front winding transmission member retracts and extends the winding bridge deck member on the front winding power member. A rear bridge deck retracting and extending member is provided on the forecastle deck and comprises a rear winding power member and a rear winding transmission member. The rear winding power member completes the retraction and extension of the winding bridge deck member by driving the rear winding transmission member connected to the winding bridge deck member on the forecastle deck; A trestle protection retractable member is provided on the front bridge deck retractable member and the rear bridge deck retractable member to protect both sides of the wound bridge deck member; The front winding power member includes a front winding frame, a front winding shaft and a front winding motor. The front winding frame is arranged on the side of the bridge deck. A first sliding groove is provided on the side wall of the front winding shaft. The front winding shaft is provided on the front winding frame through and through. The front winding motor is provided on the front winding frame, and the rotating shaft of the front winding motor is transmission-connected to one end of the front winding shaft. The front winding transmission member includes a front winding transmission tube and a front winding transverse moving member, the front winding transmission tube is sleeved on the front winding shaft, and a first sliding block on the inner wall of the front winding transmission tube is engaged with the first sliding groove; The front side winding transverse moving member includes a front side transverse moving motor, a front side transverse moving shaft and a front side transverse moving transmission block, the front side transverse moving motor is arranged on the free end of the front side winding shaft, one end of the front side transverse moving shaft is arranged on the rotating shaft of the front side transverse moving motor, and the other end of the front side transverse moving shaft is inserted into the front side transverse moving hole on the front winding shaft; one end of the front side transverse moving transmission block is sleeved on the front side transverse moving shaft, and the front side transverse moving transmission block is engaged with the front side transverse moving shaft at the sleeve; the other end of the front side transverse moving transmission block passes through the front side transverse moving long through hole set between the front side transverse moving hole and the outer wall of the front winding shaft and is connected to the inner wall of the front winding transmission tube.

2. The retractable and convenient trestle for a fully revolving tugboat according to claim 1, characterized in that: The winding bridge deck member includes a bridge deck steel cable, a bridge deck support plate, a position locking member and a bridge deck tightening member. One end of the bridge deck steel cable is connected and wound around one end of the front winding transmission tube. The two bridge deck steel cables are respectively located at both ends of the front winding transmission tube; the bridge deck support plate is in the shape of a rectangular plate, and a connecting block is provided on one side of the bridge deck support plate, and a connecting groove is provided on the other side of the bridge deck support plate. The connecting groove cooperates with the connecting block, and the side surfaces at both ends of the bridge deck support plate are respectively horizontally mounted on the two bridge deck steel cables, and the bridge deck support plate can slide on the bridge deck steel cables; a plurality of the bridge deck support plates are evenly distributed along the length direction of the bridge deck steel cables.

3. The retractable and convenient trestle for a fully revolving tugboat according to claim 2, characterized in that: The position locking component includes a position locking tube, a magnetic coil and a position locking shaft. One end of the position locking tube is arranged on an end surface of the bridge deck support plate located at the end, the magnetic coil is embedded in the position locking tube, and the position locking shaft is embedded in the position locking tube.

4. The retractable and convenient trestle for a fully revolving tugboat according to claim 2, characterized in that: The bridge deck compression piece includes a relay plate and a relay buckle plate. The relay plate is arranged on the bottom surface of the bridge deck support plate located at the end. The relay buckle plate is in the shape of an arc plate. The relay buckle plate is arranged on the relay plate.

5. The retractable and convenient trestle for a fully revolving tugboat according to claim 4, characterized in that: The rear winding power member includes a rear winding rack, a rear winding shaft and a rear winding motor, the rear winding rack is arranged on the side of the forecastle deck, a second sliding groove is arranged on the side wall of the rear winding shaft, the rear winding shaft is arranged on the rear winding rack, the rear winding motor is arranged on the rear winding rack, and the rotating shaft of the rear winding motor is connected to one end of the rear winding shaft; The rear winding transmission member includes a rear winding transmission tube and a rear winding transverse moving member, the rear winding transmission tube is sleeved on the rear winding shaft, and a second sliding block on the inner wall of the rear winding transmission tube cooperates with the second sliding groove; The rear winding transmission tube is wound and connected with the other ends of the two bridge deck cables; the rear winding transverse moving member has the same structure as the front winding transverse moving member, and the rear winding transverse moving member drives the rear winding transmission tube to move axially on the rear winding shaft.

6. The retractable and convenient trestle for a fully revolving tugboat according to claim 5, characterized in that: The trestle protective retractable component includes a front side protective component, a rear side protective component and a protective cable, the front side protective component is arranged on the front side bridge deck retractable component, and the rear side protective component is arranged on the rear side bridge deck retractable component; the front side protective component includes a protective seat, a protective rod, a pre-tightening sleeve and a protective retraction rod, the protective seat is sleeved on the front side winding shaft, and the protective seat is connected to the end of the front side winding transmission pipe in an arc shape through a follower connecting rod, one end of the protective rod is arranged on the side of the protective seat, and the side of the protective rod is provided with a first Dovetail groove, a first dovetail block is embedded in the first dovetail groove, the protective retractable rod is an automatic telescopic rod, and the top of the protective retractable rod is connected to the first dovetail block; a second dovetail block is provided on the side wall of the bottom end of the protective retractable rod, and the protective retractable rod is embedded in the second dovetail groove on the bridge deck through the second dovetail block; a torsion spring is embedded in the pre-tightening sleeve, one end of the torsion spring is connected to the inner wall of the pre-tightening sleeve, the pre-tightening sleeve is sleeved on the other end of the protective rod, and the other end of the torsion spring is fixedly connected to the protective rod.

7. The retractable and convenient trestle for a fully revolving tugboat according to claim 6, characterized in that: The rear side protective member has the same structure as the front side protective member, and the rear side protective member is arranged on the rear side winding shaft; one end of the protective cable is connected and wound around the pre-tightening sleeve, and the other end of the protective cable is connected and wound around the pre-tightening sleeve of the rear side protective member.

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