CN211810127U - Ship through-lock leaning ball - Google Patents

Abstract

The utility model provides a marine ball that leans on of cross floodgate, including aerifing the rubber and leaning on the ball, be equipped with two support arms at the edge on deck, the end of support arm is connected with the both ends of hollow shaft, aerifys to use the hollow shaft to rotate relatively as the centre of a circle between the end that rubber leans on ball and support arm, and gas tube and hollow shaft intercommunication are in order to lean on the ball to aerify for aerifing the rubber. The inflated rubber chocks can be switched to above the deck or outboard of the deck. Through the structure that adopts the support arm and aerify the rubber and lean on the ball, can accomodate aerifing the rubber and lean on the ball on the deck at the navigation in-process, and at the berth and the lockage in-process, will aerify the rubber and lean on the ball setting at the outboard of hull. During the process of passing through the lock, the friction between the lock chamber and the side wall of the ship lift is avoided by utilizing the rolling of the inflatable rubber back ball along the lock chamber and the side wall of the ship lift. And in the fixing process between the two ship bodies, the sliding friction between the inflatable rubber leaning ball and the outer board of the ship body can be effectively avoided.

Description

Ship through-lock leaning ball

Technical Field

The utility model relates to a marine accessory field, especially a ship of passing floodgate leans on ball.

Background

In order to improve the lockage efficiency, the number of ships in a lock chamber is required to be increased, collision is easy to occur between the lock chamber and a ship body, and the ship body, and a buffering leaning ball is generally adopted in the prior art. For example, the Chinese patent document CN1597445A discloses a marine inflatable rubber back ball and a production process thereof. A solid back ball for a ship according to CN 1865079A. The Chinese patent document CN203497146U also describes a fender for preventing ship collision of an ocean platform, wherein a steel structure fixed on the outer side of the ocean platform is close to a ship frame, a box-shaped steel structure base is fixed on the outer side of the ship frame, and a plurality of sets of arched rubber fenders are fixed on the box-shaped steel structure base through bolts; the improvement is that the outer side of each set of arched rubber fender is respectively fixed with a marine leaning ball; the combined ship fender has the effect of vibration reduction. The marine ball is connected with the mooring point through a nylon cable. However, when the water level changes, the position between the ship and the ship leaning frame changes, and the ship leaning ball and the outer board of the ship are easily damaged due to friction.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a marine depended on ball of cross floodgate can be solved at the cross floodgate in-process, because of the frictional problem of each other that water level variation caused between hull and the lock chamber lateral wall, also can solve between hull and the hull because the problem of the not tight emergence collision of mooring mutually.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides a ship of crossing floodgate leans on ball, is equipped with two support arms including aerifing the rubber and leans on the ball at the edge of deck, and the end of support arm is connected with the both ends of hollow shaft, uses the hollow shaft to rotate relatively as the centre of a circle between the end of aerifing the rubber and leaning on the ball and the support arm, and the gas tube is used for inflating to aerify the rubber and lean on the ball with the hollow shaft intercommunication.

In a preferred embodiment, the support arm has a structure: the supporting arm base is fixedly connected with the deck, the first arm is hinged with the supporting arm base, the second arm is hinged with the first arm, a sleeve is arranged at the free end of the first arm, and the sleeve is rotatably sleeved with the end head of the hollow shaft;

so that the inflated rubber squash can be switched over the deck or outboard of the deck.

In a preferred scheme, at least one end of the sleeve is connected with the vent end cover through a flange, a first sealing ring is arranged between the sleeve and the vent end cover, and the vent end cover is communicated with the inflation tube.

In a preferable scheme, an electromagnetic valve is arranged on the inflation tube.

In a preferred scheme, the hollow shaft has the structure that: the hollow shaft body is provided with an axial air inlet, and the part of the outer wall of the hollow shaft body, which is positioned in the inflatable rubber leaning ball, is provided with a radial through hole which is communicated with the axial air inlet.

In the preferred scheme, the two ends of the inflatable rubber leaning ball are fixedly provided with end sleeves, and the end sleeves are in key connection with the hollow shaft body;

the end of the end sleeve is connected with a first end cover flange, and a second sealing ring is arranged on the first end cover or the end sleeve.

In a preferred embodiment, when the inflatable rubber slave ball is switched to the outer side of the deck, fixing pins are provided between the first arm and the support arm base and between the second arm and the first arm.

In a preferred scheme, two supporting rollers for supporting the inflatable rubber leaning balls are further arranged on the outer board of the deck.

In a preferred scheme, a crane is arranged near the supporting arm on the deck and is connected with the supporting arm through a lifting mechanism.

In a preferred scheme, the structure of the crane is as follows: the bottom of the suspension arm is provided with a vertical shaft, the vertical shaft is rotatably connected with a crane base, and the crane base is fixedly connected with the deck.

The utility model provides a marine depended ball of passing floodgate through adopting the support arm and aerifing the structure that the rubber depended ball, can will aerify the rubber depended ball and accomodate on the deck at the navigation in-process, and at the berth and the in-process of passing floodgate, will aerify the rubber depended ball setting at the outboard of hull. During the process of passing through the lock, the friction between the lock chamber and the side wall of the ship lift is avoided by utilizing the rolling of the inflatable rubber back ball along the lock chamber and the side wall of the ship lift. In the fixing process between two ship hulls, before the inflatable rubber ball is inflated, the two ships are tied together by using the towing cables and then inflated in the inflatable rubber ball, so that the two ships are tightly tied together. The supporting roller structure can effectively avoid the sliding friction between the inflatable rubber leaning ball and the outer board of the ship body.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is a schematic top view of the present invention.

Fig. 2 is a view taken along direction a of fig. 1.

Fig. 3 is a view from direction B of fig. 1.

Fig. 4 is a schematic structural view of the hollow mandrel of the present invention.

Fig. 5 is a partially enlarged schematic view of the connection structure of the hollow mandrel and the gas tube according to the present invention.

Fig. 6 is a view from direction a of the preferred structure of fig. 1.

In the figure: the pneumatic rubber back cushion ball comprises a pneumatic rubber back cushion ball 1, a support arm 2, a support arm base 21, a first arm 22, a fixing pin 23, a second arm 24, a lifting lug 25, a sleeve 26, a ventilation end cover 27, a first sealing ring 28, a pneumatic tube 3, a hollow shaft 4, a hollow shaft body 41, a key groove 42, an axial air inlet hole 43, a radial through hole 44, an end sleeve 45, a first end cover 46, a second sealing ring 47, a crane 5, a lifting hoist 51, a lifting arm 52, a vertical shaft 53, a crane base 54, a deck 6, a lock chamber and ship lift side wall 7, an electromagnetic valve 8, a cabin air supply 9 and a support roller 10.

Detailed Description

As shown in fig. 1-5, the ship-used pass-brake backup ball comprises an inflatable rubber backup ball 1, two support arms 2 are arranged at the edge of a deck 6, the ends of the support arms 2 are connected with the two ends of a hollow shaft 4, the inflatable rubber backup ball 1 and the ends of the support arms 2 rotate relative to each other by taking the hollow shaft 4 as the center of a circle, and an inflation tube 3 is communicated with the hollow shaft 4 to inflate the inflatable rubber backup ball 1. From this structure, through the support arm 2 structure that sets up, aerify rubber and lean on ball 1 can rotate between the end of support arm 2 to make and aerify rubber and lean on between ball 1 and lock chamber and the ship lift lateral wall 7 for rolling friction. So as to overcome the influence of water level change in the lock chamber or the ship lift on mooring.

In a preferred embodiment as shown in fig. 2 and 5, the support arm 2 has a structure: the supporting arm base 21 is fixedly connected with the deck 6, the first arm 22 is hinged with the supporting arm base 21, the second arm 24 is hinged with the first arm 22, a sleeve 26 is arranged at the free end of the first arm 22, and the sleeve 26 is rotatably sleeved with the end head of the hollow shaft 4; with the structure, the inflatable rubber leaning ball 1 can be turned up and placed on the deck 6 in the process of sailing, and the inflatable rubber leaning ball 1 is put down on the outer board of the ship body in the process of mooring, so that the inflatable rubber leaning ball 1 is close to the outer board as much as possible, and the length of the cantilever is reduced.

So that the pneumatic rubber slave ball 1 can be switched over the deck 6 or outboard of the deck 6.

In a preferred embodiment, as shown in fig. 5, at least one end of the sleeve 26 is flanged with a vent end cap 27, a first sealing ring 28 is arranged between the sleeve 26 and the vent end cap 27, the inner wall of the sleeve 26 is provided with a step, the first sealing ring 28 is mounted at the position of the step, the vent end cap 27 presses and deforms the first sealing ring 28, so as to realize the sealing with the hollow shaft 4, and the other end of the sleeve 26 is flanged through an end cap and is also provided with a sealing ring for strengthening the sealing. The vent end cap 27 communicates with the fill tube 3. The vent end cap 27 is connected with the inflation tube 3 through threads or a quick-connection joint. The gas-filled tube 3 is connected to the cabin air supply 9. The cabin air supply 9 may be an air compressor or a compressed air bottle.

In a preferred scheme, as shown in fig. 3, an electromagnetic valve 8 is arranged on the inflation tube 3. The structure is used for controlling the on-off of the air supply to the air charging pipe 3.

In a preferred embodiment as shown in fig. 4, the hollow shaft 4 has a structure: the hollow shaft body 41 is provided with an axial air inlet hole 43, a radial through hole 44 is arranged on the outer wall of the hollow shaft body 41 positioned in the inflatable rubber leaning ball 1, and the radial through hole 44 is communicated with the axial air inlet hole 43. The hollow shaft 4 is preferably a stepped shaft, and the diameter is gradually reduced from the middle to both ends.

In a preferred scheme, as shown in fig. 5, end sleeves 45 are fixedly arranged at two ends of the inflatable rubber backing ball 1, the end sleeves 45 are fixedly connected with two ends of a bag body of the inflatable rubber backing ball 1 in a bonding mode, and the end sleeves 45 are connected with a hollow shaft body 41 in a key mode;

the end of the end sleeve 45 is flanged to a first end cap 46, and the first end cap 46 or the end sleeve 45 is provided with a second sealing ring 47. In this example, two second seal rings 47 are provided on the inner wall of the first end cap 46.

Preferably, as shown in fig. 2, when the pneumatic rubber slave ball 1 is switched to the outboard side of the deck 6, fixing pins 23 are provided between the first arm 22 and the support arm base 21 and between the second arm 24 and the first arm 22. With this configuration, the inserted fixing pin 23 keeps the first arm 22 and the support arm base 21 and the second arm 24 and the first arm 22 fixed, and the inflated rubber ball 1 has a certain gap from the outer board, thereby ensuring that the inflated rubber ball 1 can slide up and down along the lock chamber and the side wall 7 of the ship lift without sliding friction between the inflated rubber ball 1 and the outer board. And can cushion the collision between the outer board and the lock chamber and the side wall 7 of the ship lift.

In a preferred embodiment, as shown in fig. 6, two support rollers 10 for supporting the pneumatic rubber fender ball 1 are further provided on the outer side of the deck 6. The support roller 10 is fixedly mounted on the outer board through a support, or the support roller 10 is embedded in the outer board and partially exposed outside the outer board. The support rollers 10 are respectively located above and below the midpoint of the inflated rubber backup ball 1 closest to the outboard side. And a gap is formed between the inflatable rubber leaning ball 1 and the outer board, so that no sliding friction is ensured between the inflatable rubber leaning ball 1 and the outer board.

In a preferred embodiment, as shown in fig. 1 to 3, a crane 5 is provided on a deck 6 in the vicinity of the support arm 2, and the crane 5 is connected to the support arm 2 via a lifting mechanism. The lifting mechanism in this example adopts a lifting hoist 51, and the lifting hoist 51 is connected with the lifting lug 25 on the sleeve 26 through a steel wire rope. The crane 5 is used for assisting in switching the position of the inflatable rubber fender ball 1 on the deck or the outer board.

The preferable scheme is as shown in figures 1-3, and the structure of the crane 5 is as follows: the bottom of the suspension arm 52 is provided with a vertical shaft 53, the vertical shaft 53 is rotatably connected with a crane base 54, and the crane base 54 is fixedly connected with the deck 6. By this arrangement, boom 52 can be moved away when not in use to avoid interfering with navigation.

Example 1:

the lock ship leans on the ball, refers to the new mode of modern boats and ships launching: namely, the airbag under the water of the airbag is manufactured according to the manufacturing process, and the size of the inflatable rubber backup ball 1 when being inflated is calculated according to the plane width 32.8m of the ship: the width of the brake chamber-the plane size of the ship is 34-32.8=1.2m, the space occupied by the inflatable rubber leaning ball 1 can be 1.2m/2=0.6m, and according to the practical experience of the operation of the air bag under the ship, when the inflation pressure is 8Mpa, the air bag has a compression amount of 200mm, and the compression amount is 600mm +200mm calculated according to the actual experience; taking the diameter of the inflatable rubber leaning ball 1 which is inflated to the air pressure of 8Mpa and does not bear external downward force as 800mm, taking the length as 1600mm, and taking the shape that two ends are hemispherical; a hollow shaft 4 with the wall thickness of 76mm multiplied by 25 is arranged along the center of the long shaft, two ends of the hollow shaft 4 extend out of the inflatable rubber backup ball 1 for a certain length, and a shaft extension section is in clearance fit with the bearing; thus, the inflatable rubber leaning ball 1 can rotate freely by taking the hollow shaft 4 as the axis; the bearing is connected with the second arm 24 in a welding mode, the second arm 24 is connected with the first arm 22 through a pin shaft, when the inflatable rubber leaning ball 1 is inflated to be round and deflated or flat, the inflatable rubber leaning ball 1 freely rotates under the constraint of the pin shaft through the gravity of the inflatable rubber leaning ball 1, and therefore the inflatable rubber leaning ball 1 can be attached to the outer board of a ship body no matter the inflatable rubber leaning ball 1 is flat or inflated to be round. A through hole in the center of the hollow shaft is used as a ball-leaning air inlet channel, a plurality of small holes are uniformly distributed in the length range of the hollow shaft inside the ball-leaning, and the total area is equivalent to the area with the diameter of 25 mm;

a sliding bearing type with clearance fit is adopted between the hollow shaft and the bearing, and 2O-shaped sealing rings are arranged in the length range between the bearing and the shaft for sealing.

The joint of the inflation tube 3 is hermetically connected with the bearing in a high-pressure tube joint mode; and is connected with the high-pressure hose through a high-pressure pipe joint and extends to the air supply equipment. The air inlet hose has enough length, and when the leaning ball is installed or needs to be lifted, the air inlet hose can follow the leaning ball.

The inflatable rubber leaning ball 1 is provided with a simple lifting frame in a folding and unfolding mode, and the lifting frame can be provided with a manual or electric hoist to lift or hang.

The ball-leaning air supply pipeline extends to the air supply equipment of the turbine part, namely a high-pressure air parallel valve, a pressure and an alarm instrument are matched, and when workers need to supply air to or release air from the ball-leaning air supply pipeline, the remote control can be carried out in a cab.

The ball-leaning device is configured such that 4 balls are disposed on the port and starboard sides when the ship length is 105m to 110m, and 5 balls are disposed on the port and starboard sides when the ship length is 130m to 155 m.

Example 2:

a plane A dimension from a pole of a three gorges to a ship type is length multiplied by width, 155m multiplied by 32.8m, the ship is combined with an existing standard ship type 105m multiplied by 16.2m or a one-lock three-ship marshalling mode, wherein 2 of 105m multiplied by 16.2m are formed into 1 group, a solution is provided for navigation capacity diving of the three gorges ship lock, and therefore the original one-lock four-ship entry and exit mode is changed, and entry and exit time is saved. Simultaneously, left and right both sides respectively adopt the utility model discloses a "marine inflatable is from rolling respectively four on the port and the starboard of ball marshalling fleet, and each 5 about 150m 32.8 m's utmost point to the ship type for alleviate the bearing load of three gorges ship lock floating bollard. The operation safety of the lock chamber is ensured.

A three gorges utmost point to ship type B plane scale is length x width, 150 mx 32.8m, this ship and current standard ship type 110 mx 16.2m ship type combination or a lock three-ship marshalling, wherein 2 formation of 110 mx 16.2m are in groups, it provides a solution for three gorges lock navigation ability to dig latent, thereby change the business turn over lock mode of four ships of original one lock, come to practice thrift and go in and out the lock time, simultaneously, left and right both sides respectively adopt the utility model discloses a marshalling each four of port and starboard of fleet, the utmost point of 150 mx 32.8m is to each 5 about the ship type for alleviate the bearing load of three gorges lock floating bollard. The operation safety of the lock chamber is ensured.

A three gorges polar to boat type C + original standard 110m x 17.2m boat type +110m x 15.2m empty filling boat type combination or a one-lock three-boat marshalling. Wherein 2 formations of the empty-filling ship of 110 mx 17.2m ship type +110 mx 15.2m are in groups, dig latent solution that provides for three gorges lock navigation ability to change the business turn over floodgate mode of four boats of original floodgate, practice thrift the time of business turn over and go out of the floodgate, simultaneously, left and right both sides respectively adopt the utility model discloses a do not four by 1 formation fleet port and starboard of inflatable rubber by ball, respectively 5 about 150 mx 32.8m utmost point to the ship type for alleviate the bearing load of three gorges lock floating bollard. The operation safety of the lock chamber is ensured.

Example 3:

a rapid lock passing solution for a three gorges ship lock changes the prior ship type with the planar dimension of 130m multiplied by 16.2m into a 1+1 combination formation type from the prior single-in single-out type into a 1+1 formation type for entering and exiting a lock chamber, and the type needs to additionally arrange 5 inflatable rubber backing balls 1 on a left side and a right side of the prior ship type with the dimension of 130m multiplied by 16.2m so as to reduce the bearing load of a floating type bollard of the three gorges ship lock and ensure the operation safety of the lock chamber.

Example 4:

the three gorges polar ship type A has a main dimension of 150m multiplied by 32.8m and is used as a bulk cargo ship, the ship body structure is an all-electric welding steel structure, the double-engine double-tail double-rudder type ship is provided, and a cab is arranged at the tail part. The double-bottom double-side ship has two longitudinal bulkheads in the longitudinal direction, and two transverse bulkheads in the middle section of the cargo hold range divide the double-bottom double-side ship into 3 cargo holds, so that the double-bottom double-side ship has larger ship width and rich stability, and is suitable for direct ship types in the river and the sea. 15 inflatable rubber backup balls are respectively arranged on the left side and the right side of the ship, so that the bearing load of the floating mooring columns of the three gorges ship lock is reduced, and the operation safety of the lock chamber is ensured.

Example 5:

the three gorges extremely ship type B has the main dimension of 155m multiplied by 32.8m, is used as a container ship for river and sea direct transportation, and also can be used as a double-engine double-propeller double-rudder and tail machine type, a cab is arranged at the bow, the ship body is of a steel all-electric welding structure, two longitudinal cabin walls are arranged in the longitudinal direction, and the container cabins are 9 in height respectively at the left and right sides and at the bottom and the side;

15 inflatable rubber backup balls are respectively arranged on the left side and the right side of the ship, so that the bearing load of the floating mooring columns of the three gorges ship lock is reduced, and the operation safety of the lock chamber is ensured.

Example 6:

the utility model provides a three gorges fill out empty ship type, main plane scale 110 mx 15.2m, the utility model discloses pair with current standard ship type 110 mx 17.2m ship type, fill the waste of current 110 mx 17.2 m's standard ship type to three gorges lock chamber percent of pass, it has obvious promotion potentiality to three gorges lock navigation ability dive, under the condition of this embodiment ship type at 4.3 m's draft, about can carry cargo 5000t meter, two 5000t of filling of a lock then can reach ten thousand tons grades, the dive effect of this embodiment is most obvious, suggest relevant person in charge department guide and release this standard.

The disadvantage of this embodiment is that the width of the ship is small and the ship stability is not suitable for loading the cargo with high center of gravity such as container and the cargo with large stowage factor, but only suitable for loading the cargo with small stowage factor such as sand, stone, iron ore steel and the like. In this respect, in the present embodiment, the inflatable rubber back-up ball 1 is additionally disposed on the port and starboard sides, and the inflatable rubber back-up ball 1 is inflated sufficiently to have a corresponding buoyancy during self-propulsion, and is mounted at a position suitable for a distance of about 150m from the lowest edge of the back-up ball to the full-load water surface, and the ship's topsides are most suitably formed to have a height corresponding to the diameter of the flat shape 2/3 of the "back-up ball". The height of the ship can prevent the ship from forming water surface resistance in navigation, but the ship has additional buoyancy and has anti-tilting effect when being tilted under the action of external force. Also, on the way of navigation, the inflatable rubber leaning ball 1 is lifted to a proper height from the water surface by adopting a lifting device, and the suspension arm 2 of the inflatable rubber leaning ball 1 is fixed by adopting a positioning pin. The reserve buoyancy of the ball has obvious capability of preventing the ship from inclining. A solution is provided for such a narrow, less stability-margin embodiment. The present embodiment can form a 1+1 combination with a standard ship type of 110m × 17.2m, and the present embodiment can also reduce the load of the mooring post of the three gorges ship lock by providing a "ball" and the same as the previous embodiment, thereby ensuring the operation safety of the lock chamber.

The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims (10)

1. The utility model provides a marine depended ball of passing floodgate, includes inflatable rubber depended ball (1), characterized by: the edge of the deck (6) is provided with two supporting arms (2), the ends of the supporting arms (2) are connected with the two ends of the hollow shaft (4), the hollow shaft (4) is used as the center of a circle to rotate relatively between the inflatable rubber leaning ball (1) and the ends of the supporting arms (2), and the inflatable tube (3) is communicated with the hollow shaft (4) to inflate the inflatable rubber leaning ball (1).

2. The ship through-gate headrest as claimed in claim 1, wherein: the supporting arm (2) is structurally characterized in that: the supporting arm base (21) is fixedly connected with the deck (6), the first arm (22) is hinged with the supporting arm base (21), the second arm (24) is hinged with the first arm (22), a sleeve (26) is arranged at the free end of the first arm (22), and the sleeve (26) is rotatably sleeved with the end of the hollow shaft (4);

so that the inflated rubber fender ball (1) can be switched to be above the deck (6) or outboard of the deck (6).

3. The ship through-gate headrest as claimed in claim 2, wherein: at least one end of the sleeve (26) is connected with a vent end cover (27) in a flange mode, a first sealing ring (28) is arranged between the sleeve (26) and the vent end cover (27), and the vent end cover (27) is communicated with the inflation tube (3).

4. A lockage boat rest according to claim 1 or 3, wherein: the air charging pipe (3) is provided with an electromagnetic valve (8).

5. The ship through-gate headrest as claimed in claim 1, wherein: the hollow shaft (4) has the structure that: the hollow shaft body (41) is provided with an axial air inlet hole (43), a radial through hole (44) is arranged on the outer wall of the hollow shaft body (41) and positioned in the inflatable rubber backup ball (1), and the radial through hole (44) is communicated with the axial air inlet hole (43).

6. The ship through-lock back ball of claim 5, wherein: end sleeves (45) are fixedly arranged at two ends of the inflatable rubber leaning ball (1), and the end sleeves (45) are in key connection with the hollow shaft body (41);

the end of the end sleeve (45) is connected with the first end cover (46) in a flange mode, and the first end cover (46) or the end sleeve (45) is provided with a second sealing ring (47).

7. The ship through-gate headrest as claimed in claim 2, wherein: when the inflatable rubber leaning ball (1) is switched to the outer side of the deck (6), fixing pins (23) are arranged between the first arm (22) and the supporting arm base (21) and between the second arm (24) and the first arm (22).

8. The ship through-gate headrest as claimed in claim 1, wherein: two supporting rollers (10) for supporting the inflatable rubber leaning ball (1) are arranged on the outer board of the deck (6).

9. The ship through-gate headrest as claimed in claim 1, wherein: a crane (5) is arranged near the supporting arm (2) on the deck (6), and the crane (5) is connected with the supporting arm (2) through a lifting mechanism.

10. The ship through-gate headrest as claimed in claim 9, wherein: the crane (5) has the structure that: the bottom of the suspension arm (52) is provided with a vertical shaft (53), the vertical shaft (53) is rotatably connected with a crane base (54), and the crane base (54) is fixedly connected with the deck (6).

Images