CN106429828B - Full trussed girder gantry crane - Google Patents

Abstract

The invention relates to a full truss girder quayside bridge, which comprises a portal frame, a girder fixed on the portal frame, a ladder frame, and a plurality of tie rods for pulling the girder. The portal frame includes a horizontally arranged upper beam and a vertically arranged portal column. , the girder is fixed at the bottom of the upper beam, the ladder frame is fixed above the mast, the upper end of the tie rod is connected with the ladder frame, and the lower end is connected with the girder. The land side girders are quadrilateral truss girders. In the full truss type girder quay bridge provided by the present invention, both the sea survey girder and the land side girder adopt a quadrilateral truss type girder, which reduces the self weight and windward area of the quay bridge, reduces the energy consumption of the quay bridge equipment, The cost of use and the generated wheel pressure can be applied to large-scale quayside cranes with large parameters and high grades, which improves the practicability of large-scale quayside crane equipment and is worthy of widespread promotion and use.

Description

Full truss girder quay bridge

technical field

The invention relates to the field of port machinery, in particular to a full truss type girder quay bridge.

Background technique

The quay crane is a kind of equipment used to load and unload the containers on the ship on the shore, and plays an irreplaceable role in the port container loading and unloading system. With the acceleration of the international trade process and the increase of port cargo volume, the quayside crane equipment is also gradually enlarged. However, due to the limitation of the carrying capacity of the wharf and the improvement of people's awareness of environmental protection, it puts forward higher requirements for the light weight and energy saving of the quay crane equipment.

With the increase of the parameters of the quay bridge and the increase of the front and rear stretch, the impact of the main girder of the quay bridge on the weight, wind load and the resulting wheel pressure and energy consumption is also increasing. The abdominal box-shaped structure not only has heavy weight and high energy consumption, but also makes the windward area larger, resulting in a large wind load. In order to solve the aforementioned problem of heavy weight of the quay bridge equipment, in the prior art, a few quay bridges use a main girder structure combined with plates and trusses to reduce the weight of the quay bridge, such as two welded combined I-beams on both sides of the main girder, Plane trusses are arranged in the upper and lower horizontal planes, and trusses or frames are arranged in the vertical plane. The combined structure of plate girder and truss can reduce the weight of the quay crane equipment to a certain extent by setting the upper and lower planes of the main girder as a truss structure, but this weight reduction is limited, and the two sides are still plate structures, which still exist. The problem of large windward area and high energy consumption. In order to further reduce the weight of the quay bridge itself and reduce the windward area, in the prior art, there are also quay bridges that use a triangular tube truss structure for the front girder and a box-shaped plate girder structure for the rear girder. However, this triangular tube structure mainly Most of the beams can only be used for small quay cranes with small parameters and low work levels.

For example, Chinese invention patent application document CN201210431047 discloses a folding arm girder crane. The folding arm girder of the folding arm girder crane includes the folding arm inner section girder and the folding arm outer girder connected with the folding arm inner section girder. The folding arm outer girder is Truss structure, the inner girder of the folding arm is a double-box trapezoidal girder structure, that is, the outer girder of the folding arm girder on the sea side of the folding arm girder crane provided by the invention is a truss structure, while the inner girder of the folding arm on the land side still adopts a conventional Double box trapezoidal beam structure. Because the truss structure is 20% to 30% lighter in weight than the box structure with the same requirements while ensuring the rigidity of the girder, the folding arm girder crane provided by the patent document of the invention adopts a truss structure by setting the outer girder of the folding arm , although it can reduce the weight of the quay crane itself, reduce the energy consumption of the quay crane, and can also reduce the windward area accordingly, but because the inner girder and the rear girder of the folding arm are still double-box trapezoidal girder structures, the reduced weight of the quay crane itself 1. The use of energy consumption and the windward area are limited, and the rear girder still has the problems of heavy weight, large windward area, and high energy consumption.

Another example is the Chinese utility model patent document CN01253395 which discloses a light shore container crane, which mainly consists of a sea side door frame, a land side door frame, a sea side upper beam, a middle beam, a front extension beam, a rear extension beam, a trapezoidal frame, and a front beam of the middle beam. It is composed of hinge point, front pull rod, running trolley, spreader, hoisting wire rope, machine room, cab, running trolley, walking wheels and land side upper beam. The sea-side door frame, land-side door frame, sea-side upper beam and land-side upper beam form a structural frame to support all the upper structures and mechanisms of the utility model. Supports are provided at both ends of the upper plane of the sea-side upper beam to connect with trapezoidal frames. The middle beam is under the upper beam on the sea side and the upper beam on the land side and is rigidly connected with them. The length of the front extension beam is 29.2-34.2m, it is in a cantilever state and can perform pitching movements around the front hinge point of the middle beam, and is jointly pulled by the ladder frame and the front tie rod. The front hinge point of the middle beam is hinged to the middle beam, and the rear extension beam is rigidly connected to the middle beam. The front extension beam, the middle beam and the rear extension beam form a structural plane whose axis is perpendicular to the shoreline of the wharf. The running trolley is set at Under the structural plane, its rollers run back and forth along the rails on the front extension beam, rear extension beam, and middle beam. The rated load under the spreader is 30.5-35 tons and is suspended under the running trolley through the hoisting wire rope. Place the drive mechanism and The machine room for electrical equipment is set on the rear extension beam. In order to facilitate the driver to observe the alignment operation of the spreader, the driver's cab is arranged on the lower side behind the running trolley and follows the running trolley. There are two under the sea side door frame and the land side door frame respectively The four supports are respectively supported on 4 sets of running trolleys [commonly known as outriggers]. The running trolleys are equipped with walking wheels. The four sets of running trolleys run on two sides parallel to the shoreline of the wharf and parallel to themselves through the walking wheels. on the track for complete machine shifting. Among them, the distance between the center line of the sea-side door frame and the center line of the land-side door frame is 10 to 10.5 meters, the front extension beam adopts a triangular tube truss structure, and the rear extension beam adopts a trapezoidal plate beam truss structure. The light shoreside container crane provided by this utility model patent document reduces the weight of the crane itself and the windward area by setting the front extension beam as a triangular tube truss structure and the rear extension beam as a trapezoidal plate beam truss structure, and achieves lightweight shoreside container The purpose of the crane. However, because the rear extension beam is a trapezoidal plate girder truss structure, that is, the upper and lower sheet girders are set as a truss structure, while the left and right sheet girders are still solid-web plate-shaped structures, so the crane still has heavy weight, high energy consumption, and large windward area. The problem.

The folding arm girder crane disclosed in the aforementioned invention patent application document CN201210431047 and the light shoreside container crane disclosed in the utility model patent document CN01253395 set the upper and lower girders of the front girder or the rear girder as a truss structure, although the weight of the quay bridge itself can be correspondingly reduced. The weight can also reduce the corresponding windward area, but because the rear girder or the left and right sheet girders of the rear girder still adopt the solid-web plate girder structure, the rear girder still has the problems of heavy weight, high energy consumption and large windward area, and It can only be applied to small quay cranes with small rated load and small forward reach.

Therefore, how to reduce the weight of the quay crane, reduce the energy consumption and wheel pressure of the quay crane, reduce the windward area of the quay crane, and at the same time make the lightweight quay crane suitable for large-scale quay cranes with large parameters and high work levels, has become One of the urgent problems to be solved in this field.

Contents of the invention

In order to solve the above problems, the object of the present invention is to provide a full truss type girder quay bridge, including a portal frame, a girder fixed on the portal frame and a ladder frame, and multiple pull rods for pulling the girder. The portal frame includes a horizontally arranged upper beam And the vertically arranged gantry column, the girder is fixed at the bottom of the upper beam, the ladder frame is fixed above the gantry, the upper end of the tie rod is connected with the ladder frame, and the lower end is connected with the girder. The girders, wherein both the sea survey girder and the landside girder are quadrilateral truss girders.

Further, the truss-type girder includes an upper truss and a lower truss that are respectively arranged along a horizontal plane and are relatively parallel, and two side trusses that are respectively arranged along a vertical plane and are relatively parallel, and the two sides of the upper truss and the lower truss are connected to the upper ends of the two sides of the truss respectively. It is closely connected with the lower end, so that the longitudinal section of the truss girder is a closed rectangular section.

Preferably, the trusses on both sides include an upper chord and a lower chord arranged in parallel up and down, the upper chord constitutes the side rod of the upper truss, and the lower chord constitutes the side rod of the lower truss.

Further, the sea survey girder is connected with the land side girder through a single hinge shaft system.

Preferably, the outreach of the full truss girder quay bridge is less than 65m, the rated lifting load is less than 65t, and the outer side of the lower chord is provided with a track for the load-carrying device to run.

Further, the truss-type girder includes two side trusses respectively arranged along the vertical plane and relatively parallel and an upper truss arranged along the horizontal plane, and the two sides of the upper truss are respectively closely connected with the upper ends of the two-side trusses, so that the longitudinal direction of the truss-type girder The section is a square section opening downward.

Preferably, the trusses on both sides include an upper chord and a lower chord arranged in parallel up and down, and the upper chord constitutes a side member of the upper truss.

Further, the sea survey girder is connected with the land side girder through a double hinge shaft system.

Preferably, the outreach of the full truss girder quay bridge is less than 75m, the rated lifting load is less than 80t, and the inner side of the lower chord is provided with a track for the load-carrying device to run.

Further, the land side girder is fixed to the bottom of the upper cross girder through the connection joint and the auxiliary support rod.

Preferably, the connection joint includes a closed box, the front and rear panels of the closed box respectively extend upwards with a first protrusion along a vertical plane, and the upper panel of the closed box extends a second protrusion along a horizontal plane .

Further, the left-right width of the closed box is the same as that of the cross-section of the upper cross beam in the left-right direction, and the thickness of the closed box in the front-back direction is the same as the thickness of the top chord cross-section in the front-back direction.

Preferably, the second convex part extends along the horizontal surface of the upper panel to the left and right sides respectively, so as to be fixedly connected to the upper chord on the left and right sides of the upper panel, and the left and right bottom edges of the bottom surface of the closed box body are connected to each other through the auxiliary support rod. The upper chord and the lower chord are fixedly connected.

Furthermore, a connecting plate is provided at the position where the bottom of the upper beam is connected to the connecting joint. When the land side girder and the upper beam are fixed, the connecting plate is connected with the edge of the first protrusion and the upper panel to form a whole.

Preferably, a gusset plate is provided on the connection joint, and the gusset plate is fixedly connected to the ladder frame through the support tube.

Further, the second convex part extends leftward or rightward along the horizontal surface of the upper panel, so as to be fixedly connected to the upper chord on the left side or right side of the upper panel; when the second convex part extends leftward, the closed The left bottom edge of the box bottom is fixedly connected with the upper chord and the lower chord through the auxiliary support rod, and the right bottom edge of the closed box bottom is fixedly connected with the lower chord through the auxiliary support rod; when the second convex part extends to the right , the bottom edge on the right side of the bottom surface of the closed box is fixedly connected with the upper chord and the lower chord through the auxiliary support rod, and the bottom edge on the left side of the bottom surface of the closed box is fixedly connected with the lower chord through the auxiliary support rod.

As above, in the full truss type girder quay bridge provided by the present invention, both the sea survey girder and the land side girder are quadrangular truss type girders, which reduces the weight and windward area of the quay bridge, and reduces the use of quay bridge equipment Energy consumption, use cost and wheel pressure can be widely applied to large-scale quayside cranes with large parameters and high grades, which improves the practicability of large-scale quayside crane equipment and is worthy of widespread promotion and use.

In order to make the above-mentioned content of the present invention more comprehensible, preferred embodiments are specifically cited below and described in detail in conjunction with the accompanying drawings.

Description of drawings

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Fig. 1 is the schematic structural view of the full truss type girder quay bridge provided by the first preferred embodiment of the present invention;

Fig. 2 is A-A sectional view among Fig. 1;

Fig. 3 is a schematic structural view of the non-working state of the full truss girder quay bridge provided by the first preferred embodiment of the present invention;

Fig. 4 is a schematic structural view of the full truss girder quay bridge provided by the second preferred embodiment of the present invention;

Fig. 5 is A-A sectional view of Fig. 4;

Fig. 6 is a schematic structural view of the non-working state of the full-truss girder quay bridge provided by the second preferred embodiment of the present invention;

Fig. 7 is a schematic structural diagram of the landside girder and the connection joint provided by the third preferred embodiment of the present invention;

Fig. 8 is a front view of the connecting joint provided by the third preferred embodiment of the present invention;

Fig. 9 is a rear view of the connecting joint provided by the third preferred embodiment of the present invention;

Fig. 10 is a partial schematic diagram of the connection between the landside girder and the upper beam provided by the third preferred embodiment of the present invention;

Fig. 11 is a partial front view before the connection between the land side girder and the upper beam in Fig. 10;

Fig. 12 is a partial front view after the land side girder is connected to the upper beam in Fig. 10;

Fig. 13 is a partial rear view before the connection between the land side girder and the upper beam in Fig. 10;

Fig. 14 is a partial rear view after the land side girder is connected to the upper beam in Fig. 10;

Fig. 15 is a D-D sectional view of Fig. 10;

Fig. 16 is a partial schematic diagram of the connection between the land side girder and the upper beam provided by the fourth preferred embodiment of the present invention;

Fig. 17 is another partial schematic diagram of the connection between the land side girder and the upper cross girder provided by the fourth preferred embodiment of the present invention.

Component designation description

11 Upper beam 12 Door frame column

2 girders

21 Marine survey girder 22 Land side girder 23 Upper truss 24 Lower truss 25 Side truss

251 upper chord 252 lower chord

3 Ladder Frame 4 Tie Rod 5 Single Hinge System

6 double hinge shaft system

61 upper hinge shaft 62 lower hinge shaft

7 support tube 8 connecting joint

81 upper panel 82 lower panel 83 left panel 84 right panel 85 front panel 86 rear panel 87 gusset plate

851 first convex part 811 second convex part

9 Auxiliary support rod 10 Connecting plate

Detailed ways

The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the invention will be presented in conjunction with a preferred embodiment, it is not intended that the features of the invention be limited to that embodiment only. On the contrary, the purpose of introducing the invention in conjunction with the embodiments is to cover other options or modifications that may be extended based on the claims of the present invention. The following description contains numerous specific details in order to provide a thorough understanding of the present invention. The invention may also be practiced without these details. Also, some specific details will be omitted from the description in order to avoid obscuring or obscuring the gist of the present invention.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

In addition, the "front", "rear", "left" and "right" used in the following descriptions are defined by facing the quayside bridge, wherein the directions of "left" and "right" are E-E in Figure 10 As shown, the "front" and "rear" directions are shown as F-F in Figure 10.

【The first preferred embodiment】

As shown in Figure 1, the first preferred embodiment of the present invention provides a full truss girder quayside bridge, including a portal frame, a girder 2 fixed on the portal frame, a ladder frame 3, and a plurality of tie rods 4 for pulling the girder 2 , the door frame includes a horizontally arranged upper beam 11 and a vertically arranged door frame column 12, the cross beam 2 is fixed on the bottom of the upper beam 11, the ladder frame 3 is fixed above the door frame, and the upper end of the pull rod 4 is connected with the ladder frame 3, The lower end is connected with the girder 2, and the girder 2 includes a sea survey girder 21 and a land side girder 22 which are rotatably connected, wherein both the sea survey girder 21 and the land side girder 22 are quadrilateral truss girders.

Further, as shown in FIG. 2 , the truss-type girder includes an upper truss 23 and a lower truss 24 respectively arranged along a horizontal plane and relatively parallel, each arranged along a vertical plane and relatively parallel to both side trusses 25, the upper truss 23 and The two sides of the lower truss 24 are respectively closely connected with the upper end and the lower end of the trusses 25 on both sides, so that the longitudinal section of the truss type girder is a closed rectangular section.

Furthermore, as shown in FIGS. 1 and 3 , the trusses 25 on both sides include an upper chord 251 and a lower chord 252 arranged in parallel up and down. side pole. Specifically, the trusses 25 on both sides are fixedly connected to the upper truss 23 and the lower truss 24, and share side bars with the upper truss 23 and the lower truss 24 respectively, that is, the upper chord 251 is not only the side bar of the trusses 25 on both sides but also the side bar of the upper truss 23. Both side rods, similarly, the lower chord 252 is both the side rods of the truss 25 on both sides and the two side rods of the lower truss 24, so that the upper truss 23, the lower truss 24 and the two side trusses 25 can be tightly connected to form a closed longitudinal section In the quadrangular truss type girder, here, the longitudinal section refers to a section cut in the vertical direction.

As shown in FIG. 1 and FIG. 3 , in the full truss girder quay bridge provided by the first preferred embodiment of the present invention, the sea survey girder 21 and the land side girder 22 are connected through a single hinge shaft system 5 . Specifically, a single hinge shaft system 5 is provided at the junction of the bottom chord 252 of the sea survey girder 21 and the land side girder 22, so that the sea survey girder 21 and the land side girder 22 are rotationally connected at the bottom chord 252. Those of ordinary skill in the art should be able to understand that the single hinge shaft system 5 can also be arranged at the junction of the top chord 251 of the sea survey girder 21 and the land side girder 22, so as to connect the sea survey girder 21 and the land side girder 22 at the top chord 251 Make a swivel connection. When the full truss girder quay bridge is in working condition, the sea survey girder 21 is placed horizontally and is on the same structural plane as the land side girder 22, and the tie rod 4 and the ladder frame 3 jointly support the sea survey girder 21 to keep it at In a normal working state, as shown in Figure 1. When the full truss girder quay bridge is in a non-working state, the pull rod 4 can pull up the sea survey girder 21, so that the sea survey girder 21 pitches at a certain angle around the single hinge system 5, as shown in FIG. 3 . Further, in the full truss girder quay bridge provided by this preferred embodiment, the outreach of the quay bridge is less than 65m, the rated lifting load is less than 65t, and the outer side of the lower chord 251 is provided with a track for the load-carrying device to run. Preferably, the outreach of the quay crane is 40m-65m, and the rated lifting load is 35t-65t.

In the full truss type girder quay bridge provided by this preferred embodiment, what the sea survey girder 21 and the landside girder 22 all adopt is a quadrilateral truss type girder, which reduces the weight of the quay bridge itself and the windward area, and also reduces the weight of the quay bridge. The energy consumption, use cost and wheel pressure of the equipment can be widely applied to large-scale quay cranes with large parameters and high grades, which improves the practicability of large-scale quay crane equipment and is worthy of widespread promotion and use.

[Second preferred embodiment]

As shown in Figure 4, the full truss-type girder quay bridge provided by the second preferred embodiment of the present invention, the truss-type girder includes respectively arranged along the vertical plane and relatively parallel side trusses 25 and the upper truss arranged along the horizontal plane 24. The two sides of the upper truss 24 are respectively closely connected with the upper ends of the two side trusses 25, so that the longitudinal section of the truss-type girder is a square section opening downward.

Further, as shown in FIG. 5 , the trusses 25 on both sides include an upper chord 251 and a lower chord 252 arranged in parallel up and down, and the upper chord 251 constitutes a side member of the upper truss 23 . Specifically, the trusses 25 on both sides are all fixedly connected with the upper truss 23, and share the side bars with the upper truss 23, that is, the upper chord 251 is both the side bars of the trusses 25 on both sides and the two side bars of the upper truss 23, so that the upper truss 23 and the upper truss 23 The trusses 25 on both sides can be tightly connected to form a truss-type girder with a vertical section opening downwards and an unclosed quadrilateral. Here, the longitudinal section refers to a section cut in the vertical direction.

Further, as shown in FIG. 4 and FIG. 6 , the sea girder 21 and the land side girder 22 are connected through a double hinge shaft system 6 . Specifically, a hinge shaft system is set at the junction of the sea survey girder 21 and the upper chord 251 of the land side girder 22, and at the same time a hinge system is also set at the junction of the sea survey girder 21 and the lower chord 252 of the land side girder 22. shaft system, so that the sea girder 21 and the land side girder 22 are connected in rotation. When the full truss girder quay bridge is in working condition, the sea survey girder 21 is placed horizontally and is on the same structural plane as the land side girder 22, and the tie rod 4 and the ladder frame 3 jointly support the sea survey girder 21 to keep it at In a normal working state, it is specifically shown in FIG. 4 . And when the full truss girder quay bridge is in the non-working state, the pull rod 4 can pull up the sea survey girder 21, so that the sea survey girder 21 can pitch at a certain angle around the double hinge shaft system 6, and the pitch state is specifically shown in Figure 6 shown. Preferably, in the full truss girder quay bridge provided in this preferred embodiment, the outreach of the quay bridge is less than 75m, the rated lifting load is less than 80t, and the inner side of the lower chord 252 is provided with a track for the load-carrying device to run. Preferably, the outreach of the quay crane is 60m-75m, and the rated lifting load is 65t-80t.

The main difference between the full truss type girder quay bridge provided by this preferred embodiment and the full truss type girder quay bridge provided by the first preferred embodiment is that, in this preferred embodiment, the longitudinal section of the truss type girder is downward opening The cross-section is square, and the sea-surveying girder 21 and the land-side girder 22 are connected by a double-hinge shaft system 6 . Specifically, as shown in Fig. 4 and Fig. 6, the double hinge shaft system 6 in the full truss girder quay bridge provided by this preferred embodiment includes an upper hinge shaft 61 and a lower hinge shaft 62, wherein the upper hinge shaft 61 is the working The hinge shaft, the lower hinge shaft 62 is the prone hinge shaft, the upper hinge shaft 61 is the rotational hinge point of the sea survey girder 21 and the land side girder 22 at the upper chord 251, and the lower hinge shaft 62 is the sea survey girder 21 and the land side girder 22 pivot point at the bottom chord 252 place. When the full truss girder quay bridge is in the working state as shown in Figure 4, the lower hinge shaft 62 is stressed, and the upper hinge shaft 61 remains in a relaxed state, that is, the lower hinge shaft 62 is jointly supported by the pull rod 4 and the ladder frame 3 The sea survey girder 21 keeps it in the normal working state; and when the full truss girder quay bridge moves to the non-working state as shown in Figure 6, that is, the sea survey girder 21 is pitched upward at a certain angle, The sea survey girder 21 is separated from the land side girder 22 at the lower hinge shaft 62 , and the pull rod 4 can pull the sea survey girder 21 up so that the sea survey girder 21 can pitch at a certain angle around the upper hinge shaft 61 .

In the full truss girder quay bridge provided by this preferred embodiment, no webs, etc. that close the two lower chords 252 are provided at the lower chord 252, but the lower part of the truss type girder is in an open state, that is, the lower truss is cancelled. 24, so that the longitudinal section of the truss-type girder quay bridge is a square section with downward opening, and then passes through the junction of the upper chord 251 of the sea survey girder 21 and the land side girder 22 and the junction of the lower chord 252 The hinge shaft is set, that is, the double hinge shaft system 6 is set to rotate and connect the sea survey girder 21 and the land side girder 22. On the premise of ensuring the stability and load of the truss type girder, the weight of the quay bridge itself and the windward effect are further reduced. The area also further reduces the energy consumption, use cost and wheel pressure of the quay crane equipment, which has better use value and can be applied to large or extra-large quay cranes with higher parameter levels, and is worthy of widespread promotion and use.

[Third preferred embodiment]

As shown in FIG. 7 , in the full truss girder quay bridge provided by the third preferred embodiment of the present invention, the land side girder 22 is fixed to the bottom of the upper beam 11 through the connection joint 8 and the auxiliary support rod 9 . Further, as shown in Fig. 8 and Fig. 9, the connection joint 8 comprises a closed box body, and the front and rear panels 85, 86 of the closed box body respectively extend upwards from the first convex part 851 along the vertical plane, and the upper panel 81 extends a second protrusion 811 along a horizontal plane.

Furthermore, as shown in Figures 10 to 15, the width of the closed box in the left-right direction is the same as that of the cross-section of the upper beam 11 in the left-right direction, and the thickness of the closed box in the front-back direction is the same as that of the upper chord The cross-section of the rod 251 has the same thickness in the front-rear direction. Specifically, the width of the closed box in the left and right direction refers to the width between the two side panels, that is, the width between the left panel 83 and the right panel 84, and the thickness of the closed box in the front and rear direction refers to the width between the front and rear panels. The thickness between the sheet panels 85, 86, the section of the upper beam 11 and the section of the upper chord 251 refer to sections cut in the vertical direction. Here, the width of the closed box is set to be the same as the width of the section of the upper beam 11, so that the upper beam 11 and the closed box can be firmly fixed, and the thickness of the closed box is set to be the same as that of the upper chord. 251 have the same cross-sectional height, so that the closed box matches the upper chord 251, so that the closed box can be fixedly welded in the upper chord 251 and become an integral part of the upper chord 251, so as to improve the bearing capacity of the closed box ability.

As shown in Figures 10 to 14, in the full truss girder quay bridge provided by this preferred embodiment, the second convex part 811 extends along the horizontal surface of the upper panel 81 to the left and right sides respectively, so as to be on the left and right sides of the upper panel 81. The sides are respectively fixedly connected to the upper chord 251, that is, the upper panel 81 of the closed box body extends to the left and right sides respectively along the horizontal plane to extend the left second convex part 811 and the right second convex part 811, and the left second convex part Part 811 and the second right convex part 811 are all fixedly connected on the upper chord 251, and the left and right bottom edges of the bottom surface of the closed box are fixedly connected with the upper chord 251 and the lower chord 252 through the auxiliary support rod 9. Here, the upper panel 81 of the closed box is fixedly connected to the upper chord 251 through the second convex part 811, and forms the same structural plane with the upper chord 251, that is to say, the left and right ends of the upper panel 81 respectively pass through the second The convex portion 811 is connected to the upper chord 251 , so that the upper panel 81 becomes an integral part of the upper chord 251 , that is, the upper panel 81 is also a section of the upper chord 251 . In addition, the two bottom edges of the bottom surface of the closed box are fixedly connected with the upper chord 251 and the lower chord 252 respectively through the auxiliary support rod 9, that is, each bottom edge of the bottom surface of the closed box is not only connected with the upper chord 251, but also connected with the upper chord 251. The lower chords 252 are connected to improve the bearing capacity of the closed box, thereby increasing the bearing capacity of the land side girder 22 at the position of the upper beam 11 .

Further, as shown in FIGS. 11 and 13 , a connecting plate 10 is provided at the position where the bottom of the upper beam 11 is connected to the connecting joint 8 . When the land side girder 22 and the upper beam 11 are fixed, the connecting plate 10 and The edge of the first protrusion 851 and the upper panel 81 are connected into one body, as shown in FIG. 12 and FIG. 14 . Thus, a closed rectangular box is formed between the upper panel 81, the front panel 85, and the rear panel 86 through the connecting plate 10, so that the force on the connecting joint 8 is more uniform, and the bearing capacity is further enhanced.

Furthermore, as shown in Fig. 8, Fig. 11 and Fig. 12, in the full truss type girder quay bridge provided by this preferred embodiment, the connection joint 8 is provided with a gusset plate 87, and the gusset plate 87 passes through the support tube 7 (support The position of the pipe 7 in the quay bridge is shown in Fig. 1 and Fig. 4) and the ladder frame 3 is fixedly connected to solve the complicated stress and design difficulties at the intersection of the three parts of the land side girder 22, the upper beam 11 and the support pipe 7 The problem.

The full truss-type girder quay bridge provided by this preferred embodiment fixes the upper beam 11 and the truss-type land side girder 22 by setting the connection joint 8 and the auxiliary support rod 9, and by setting the connection joint 8 to be connected to the land side The box structure adapted to the side girder 22 and the upper beam 11 makes the joint force between the land side girder 22 and the upper beam 11 uniform, and improves the bearing capacity of the truss-type land side girder 22 at the position of the upper beam 11, making it It has good load-bearing performance, good torsion resistance and fatigue resistance, and the connection joint 8 has a simple structure, clear force, strong bearing capacity, and easy manufacture. The land side girder 22 and the upper beam 11 are firmly connected, have high reliability, are not easy to wear and shake, and are worthy of widespread promotion and use.

[Fourth preferred embodiment]

As shown in Fig. 16 and Fig. 17, in the full truss type girder quay bridge provided by the fourth preferred embodiment of the present invention, the second convex part 811 extends leftward or rightward along the horizontal surface of the upper panel 81, so as to The left or right side of the upper panel 81 is fixedly connected to the upper chord 251; when the second protrusion 811 extends to the left, the left bottom edge of the bottom of the closed box body passes through the auxiliary support rod 9 and the upper chord 251 and the lower chord. 252 is fixedly connected, and the right bottom edge of the bottom surface of the closed box body is fixedly connected with the lower chord 252 through the auxiliary support rod 9; when the second convex part 811 extends to the right, the right bottom edge of the bottom surface of the closed box body passes through the auxiliary The support rod 9 is fixedly connected with the upper chord 251 and the lower chord 252 , and the left bottom edge of the closed box bottom is fixedly connected with the lower chord 252 through the auxiliary support rod 9 .

Specifically, the second protrusion 811 extending to the left or right from the upper panel 81 of the closed box is fixedly connected to the upper chord 251 of the land side girder 22, and forms the same structural plane with the upper chord 251, so that the upper chord 251 The panel 81 becomes an integral part of the top chord 251 . When the girder 22 on the land side is fixedly connected to the upper beam 11 on the sea side through the connecting joint 8, the left or right side of the upper panel 81 of the closed box in the connecting joint 8 is connected to the upper chord 251 through the second convex part 811. It is fixedly connected and forms the termination section of the upper chord 251. Therefore, the bottom edge on the same side as the second convex part 811 among the two bottom edges of the closed box bottom surface can still connect with the upper chord of the land side girder 22 respectively through the auxiliary support rod 9. The rod 251 is fixedly connected with the lower chord 252, and the other bottom edge of the two bottom edges of the bottom surface of the closed box is fixedly connected with the lower chord 252 only through the auxiliary support rod 9, or by The auxiliary support rod 9 is fixedly connected with the lower chord 252 of the land side girder 22 and the upper hinge shaft 61 .

Here, as shown in FIG. 16 , when the sea-side girder 21 and the land-side girder 22 are fixedly connected by a single hinge shaft system, and the land-side girder 22 is fixedly connected to the upper beam 11 on the sea side through a connecting joint 8 , the bottom edge on the same side as the second convex part 811 among the two bottom edges of the bottom surface of the closed box body is fixedly connected with the upper chord 251 and the lower chord 252 of the land side girder 22 respectively through the auxiliary support rod 9, and the closed box body Among the two bottom edges of the bottom surface, the other bottom edge on the side different from the second convex portion 811 is only fixedly connected to the lower chord 252 through the auxiliary support rod 9 . As shown in Figure 17, when the sea-side girder 21 and the land-side girder 22 are fixedly connected by a double-hinge shaft system, and the land-side girder 22 is fixedly connected to the upper beam 11 on the sea side through the connection joint 8, the closed Among the two bottom edges of the bottom surface of the box body, the bottom edge on the same side as the second convex part 811 is fixedly connected with the upper chord 251 and the lower chord 252 of the land side girder 22 respectively through the auxiliary support rod 9, and the two bottom edges of the closed box bottom surface The other bottom edge on the side different from the second protrusion 811 among the two bottom edges is fixedly connected to the lower chord 252 and the upper hinge shaft 61 through the auxiliary support rod 9 . Furthermore, in the full truss type girder quay bridge provided by this preferred embodiment, two auxiliary support rods 9 are preferably provided in another bottom edge of the closed box on a different side from the second convex portion 811 to The closed box is fixedly connected to the lower chord 252 or the closed box is fixedly connected to the lower chord 252 and the upper hinge shaft 61 respectively, so as to improve the bearing capacity of the connecting joint 8 .

The main difference between the full truss type girder quay bridge provided by this preferred embodiment and the full truss type girder quay bridge provided by the third preferred embodiment is that in this preferred embodiment, when the land side girder 22 passes through the connecting joint 8 and the sea side When the upper beam 11 is fixedly connected, the upper panel 81 of the closed box body only extends the second convex part 811 to one side, that is, the second convex part 811 only extends to the left or right side, and the closed box body Two auxiliary support rods 9 are arranged on the bottom edge on the different side from the second protrusion 811 to securely connect the closed box with the lower chord 252, or connect the closed box with the lower chord 252 and the upper hinge shaft 61. Fixed connection, thereby increasing the fulcrum of the closed box, improving the bearing capacity of the connecting joint 8, making the connection between the land side girder 22 and the upper cross beam 11 more firm and reliable, and then improving the land side girder 22 on the upper cross girder. 11 position carrying capacity.

To sum up, the full truss girder quay bridge provided by this preferred embodiment fixedly connects the closed box with the lower chord 252 by setting two auxiliary support rods 9 in the bottom edge of one side of the closed box, or with The lower chord 252 and the upper hinge shaft 61 are fixedly connected, so that the force on the land side girder 22 and the sea side upper beam 11 is more uniform at the joint 8, further improving the truss-type land side girder 22 at the position of the upper beam 11. The load-bearing capacity makes it have better load-bearing performance, better torsional performance and better fatigue resistance.

In summary, in the full truss type girder quay bridge disclosed by the present invention, the sea survey girder 21 and the land side girder 22 both adopt quadrilateral truss type girders, which reduces the weight and windward area of the quay bridge, and reduces the cost of the quay bridge equipment. The use of energy consumption, use cost and wheel pressure can be applied to large-scale quayside cranes with large parameters and high grades, which improves the practicability of large-scale quayside cranes and is worthy of widespread promotion and use.

The above-mentioned embodiments provided by the present invention are only illustrative to illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention should still be covered by the claims of the present invention.

Claims (12)

1. A full truss type girder quayside bridge, comprising a portal frame, a girder and a ladder frame fixed on the portal frame, a plurality of pull rods for pulling the beam, and the portal frame includes a horizontally arranged upper beam and a vertical The door frame column is provided, the girder is fixed on the bottom of the upper beam, the ladder frame is fixed above the door frame, the upper end of the pull rod is connected to the ladder frame, and the lower end is connected to the girder, The girder includes a sea survey girder and a land side girder that are rotatably connected, and is characterized in that both the sea survey girder and the land side girder are quadrangular truss type girders; The land side girder is fixed to the bottom of the upper beam through a connecting joint and an auxiliary support rod; The connection joint includes a closed box body, the front and rear panels of the closed box body respectively extend upwards from the first protrusion along the vertical plane, and the upper panel of the closed box body extends out of the first protrusion along the horizontal plane. Two convex parts. 2. The full truss-type girder quay bridge according to claim 1, characterized in that, the truss-type girder comprises upper trusses and lower trusses respectively arranged along a horizontal plane and relatively parallel, each arranged along a vertical plane and relatively parallel The two sides of the truss, the two sides of the upper truss and the lower truss are closely connected with the upper end and the lower end of the two sides of the truss, so that the longitudinal section of the truss type girder is a closed rectangular section. 3. The full truss-type girder quay bridge according to claim 2, wherein the trusses on both sides include an upper chord and a lower chord arranged in parallel up and down, and the upper chord constitutes a side bar of the upper truss, The lower chord constitutes a side member of the lower truss; The sea survey girder is connected with the land side girder through a single hinge shaft system. 4. The full truss type girder quay bridge according to claim 3, characterized in that, the outreach distance of the full truss type girder quay bridge is less than 65m, the lifting rated load is less than 65t, and the outer side of the lower chord There is a track for the load-carrying device to run. 5. The full truss type girder quay bridge according to claim 1, characterized in that, the truss type girder comprises respective parallel side trusses arranged along a vertical plane and an upper truss arranged along a horizontal plane, the The two sides of the upper truss are respectively closely connected with the upper ends of the two side trusses, so that the longitudinal section of the truss-type girder is a downwardly open, unclosed square section. 6. The full truss-type girder quay bridge according to claim 5, wherein the trusses on both sides include an upper chord and a lower chord arranged in parallel up and down, and the upper chord constitutes a side bar of the upper truss; The sea survey girder is connected with the land side girder through a double hinge shaft system. 7. The full truss type girder quay bridge according to claim 6, characterized in that, the outreach distance of the full truss type girder quay bridge is less than 75m, the lifting rated load is less than 80t, and the inner side of the lower chord There is a track for the load-carrying device to run. 8. The full truss type girder quay bridge according to claim 3 or 6, characterized in that, the width of the closed box in the left and right direction is the same as the width of the cross section of the upper beam in the left and right direction, and the The front and rear thickness of the closed box is the same as the front and rear thickness of the section of the upper chord. 9. The full truss-type girder quay bridge according to claim 3 or 6, wherein the second convex portion extends respectively along the horizontal surface of the upper panel to the left and right sides, so as to be on the left and right sides of the upper panel. The two sides are respectively fixedly connected to the upper chord, and the left and right bottom edges of the bottom surface of the closed box are fixedly connected to the upper chord and the lower chord through the auxiliary support rod. 10. The full truss girder quay bridge according to claim 1, characterized in that, a connecting plate is provided at the position where the bottom of the upper beam is connected to the connecting joint, when the land side girder is connected to the When the upper beam is fixed, the connecting plate is connected with the edge of the first protrusion and the upper panel to form a whole. 11. The full truss type girder quayside bridge according to claim 9, characterized in that, the connection joint is provided with a gusset plate, and the gusset plate is fixedly connected to the ladder frame through a support tube. 12. The full truss girder quay bridge according to claim 3 or 6, wherein the second protrusion extends leftward or rightward along the horizontal surface of the upper panel, so as to be on the upper panel The left or right side of the upper chord is fixedly connected to the upper chord; when the second convex part extends to the left, the left bottom edge of the bottom surface of the closed box passes through the auxiliary support rod and the upper chord It is fixedly connected with the lower chord, and the right bottom edge of the bottom surface of the closed box is fixedly connected with the lower chord through the auxiliary support rod; when the second convex part extends to the right, the closed The bottom edge on the right side of the bottom surface of the box is fixedly connected to the upper chord and the lower chord through the auxiliary support rod, and the bottom edge on the left side of the bottom surface of the closed box is connected to the lower chord through the auxiliary support rod. Rod fixed connection.