Bridge type grab ship unloader

Abstract

The bridge type grab bucket ship unloader comprises a steel supporting structure, a bridge frame structure, a lifting opening and closing mechanism, a pitching mechanism, a trolley, a grab bucket, a trolley traction mechanism, a discharging system and a walking mechanism, the bridge frame structure is arranged at the upper end of the steel supporting structure, and the lifting opening and closing mechanism is arranged on the steel supporting structure, connected with the grab bucket and used for lifting opening and closing of the grab bucket; the pitching mechanism is arranged at the upper end of the steel supporting structure, connected with the bridge structure and used for pitching of the bridge structure, the trolley is arranged on the bridge structure in a sliding mode, the trolley traction mechanism is arranged on the bridge structure, connected with the trolley and used for providing driving force for the trolley, and the discharging system is arranged in the middle of the steel supporting structure and used for grab bucket discharging. The walking mechanism is arranged at the bottom of the steel supporting mechanism and used for driving the steel supporting mechanism. The structure is simple, a rope supporting trolley system is omitted, the mechanism of the whole machine is simplified, the structural load of the whole machine is optimized, the weight of the whole machine is reduced, and the manufacturing cost and the maintenance cost are effectively reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of ship unloaders, and particularly relates to a bridge-type grab ship unloader. Background Art

[0002] The bridge-type grab ship unloader is an essential equipment applicable to ship unloading operations in medium and small ports.

[0003] In the prior art, the hoisting and closing mechanism and the trolley running mechanism are of an integrated structure. Due to requirements such as large outreach, high production efficiency, and large lifting capacity of the ship unloader, the diameter of the hoisting and closing steel wire ropes is large, the length is long, the sag of the steel wire ropes is large. After the steel wire ropes are wound, high requirements are imposed on the differential reducer during the operation of the grab and the trolley, the working conditions are complex, and the self-weight is large. The main trolley needs to bear all the vertical loads of the grab and the materials in the grab, resulting in large structural dimensions and weight of the main trolley, complex structure. At the same time, the bridge structure and the steel support structure of the ship unloader are subject to the vertical loads of the grab and the materials in the grab and the vertical load of the trolley, with large loads, large cross-sectional dimensions and weight, thus increasing the comprehensive costs of manufacturing, installation, maintenance, etc. of the whole ship unloader. Summary of the Invention

[0004] To at least partially solve the technical problems existing in the above prior art, the present invention provides a bridge-type grab ship unloader.

[0005] The bridge-type grab ship unloader of the present invention includes a steel support structure, a bridge structure, a hoisting and closing mechanism, a luffing mechanism, a trolley, a grab, a trolley traction mechanism, a discharging system, and a traveling mechanism. The bridge structure is arranged at the upper end of the steel support structure. The hoisting and closing mechanism is arranged on the steel support structure and connected to the grab for lifting and closing the grab. The luffing mechanism is arranged at the upper end of the steel support structure and connected to the bridge structure for luffing the bridge structure. The trolley is slidably arranged on the bridge structure. The trolley traction mechanism is arranged on the bridge structure and connected to the trolley for providing driving force to the trolley. The discharging system is arranged in the middle of the steel support structure for discharging the grab. The traveling mechanism is arranged at the bottom of the steel support mechanism for driving the steel support structure, wherein:

[0006] The hoisting and closing mechanism includes a hoisting mechanism, a closing mechanism, hoisting steel wire ropes, and closing steel wire ropes. The hoisting mechanism and the closing mechanism are arranged side by side. The hoisting steel wire ropes are arranged on the hoisting mechanism and connected to the grab for controlling the lifting of the grab. The closing steel wire ropes are arranged on the closing mechanism and connected to the grab for controlling the closing of the grab;

[0007] The trolley traction mechanism includes a power assembly and a traction rope. The traction rope is arranged between the power assemblies and connected to the trolley for towing the trolley to move along the bridge structure.

[0008] Further, in the above-mentioned bridge-type grab ship unloader, the trolley includes a frame, traveling wheels, horizontal wheels, and a wire rope guiding roller group. The traveling wheels are arranged in a rectangle at both sides of the bottom of the frame and are in rolling connection with the bridge structure. The horizontal wheels are arranged in a rectangle at the front and rear ends of the frame and are used to keep the frame moving horizontally. The wire rope guiding roller group is arranged in the middle of the frame.

[0009] Further, in the above-mentioned bridge-type grab ship unloader, the power assembly includes a trolley traction power device, a reducer, a driving power wheel, and a driven power wheel. The trolley traction power device is fixed to the end of the bridge structure by bolts. The driving power wheel is connected to the output end of the trolley traction power device through the reducer. The driven power wheel is fixed to the front end of the bridge structure by bolts. The traction rope is respectively sleeved on the driving power wheel and the driven power wheel, and the traction rope is connected to both sides of the frame.

[0010] Further, in the above-mentioned bridge-type grab ship unloader, the hoisting mechanism includes a hoisting power device, a hoisting reducer, a hoisting drum, and a hoisting pulley. The hoisting power device is fixed to the upper end of one side of the steel support structure by bolts. The hoisting drum is connected to the output end of the hoisting power device through the hoisting reducer. The hoisting pulley is fixed to the top of the other side of the steel support structure by bolts.

[0011] Further, in the above-mentioned bridge-type grab ship unloader, one end of the hoisting wire rope is wound on the hoisting drum, and the other end of the hoisting wire rope bypasses the hoisting pulley and passes through the wire rope guiding roller group to be connected to the grab.

[0012] Further, in the above-mentioned bridge-type grab ship unloader, the opening and closing mechanism includes an opening and closing power device, an opening and closing reducer, an opening and closing drum, and an opening and closing pulley. The opening and closing power device is fixed to the upper end of one side of the steel support structure by bolts. The opening and closing drum is connected to the output end of the opening and closing power device through the opening and closing reducer. The opening and closing pulley is fixed to the top of the other side of the steel support structure by bolts.

[0013] Further, in the above-mentioned bridge-type grab ship unloader, one end of the opening and closing wire rope is wound on the opening and closing drum, and the other end of the opening and closing wire rope bypasses the opening and closing pulley and passes through the wire rope guiding roller group to be connected to the grab.

[0014] Further, in the above-mentioned bridge-type grab ship unloader, the wire rope guiding roller group is composed of two rollers. An arc-shaped groove is arranged around the outer diameter of the roller, and the diameter of the arc-shaped groove matches the diameters of the hoisting wire rope and the opening and closing wire rope.

[0015] Furthermore, in the above-mentioned bridge-type grab ship unloader, upper and lower rope supporting rollers are provided on the bridge structure, and the towing ropes are respectively lapped on the upper and lower rope supporting rollers.

[0016] The bridge-type grab ship unloader of the present invention has the following advantages and beneficial effects:

[0017] The overall structure of the present invention is simple. The hoisting mechanism and the opening and closing mechanism are independent of each other. A conventional parallel shaft reducer can be used for the reducer. The working conditions are simple, the self-weight is small, and the cost is low. The hanging of the steel wire rope is effectively reduced. Through the cooperation of the hoisting mechanism and the hoisting wire rope, and the opening and closing mechanism and the opening and closing wire rope, the hoisting wire rope and the opening and closing wire rope form an angle with the horizontal direction, effectively reducing the influence of the hanging of the hoisting wire rope and the opening and closing wire rope on the system. When the hoisting and opening / closing actions are performed, the bounce of the wire rope is small, and there is no need for a rope supporting trolley. The trolley bears part of the vertical load and horizontal load, effectively reducing the structural size and weight of the trolley. Moreover, when the grab is fully loaded, the grab and the material generate a horizontal force backward, which can be used as the driving force of the trolley, effectively reducing the work done by the power components, saving energy, and at the same time effectively reducing the cross-sectional size and weight of the steel support structure and the bridge structure, reducing the comprehensive costs of manufacturing, installation, maintenance, etc. of the ship unloader. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for further understanding of the embodiments of the present invention and constitute a part of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In the drawings:

[0019] Figure 1 is a schematic structural diagram of the bridge-type grab ship unloader of the present invention;

[0020] Figure 2 is a schematic diagram of the hoisting structure of the bridge-type grab ship unloader of the present invention after removing the hoisting pulley;

[0021] Figure 3 is a schematic diagram of the opening and closing mechanism of the bridge-type grab ship unloader of the present invention after removing the opening and closing pulley;

[0022] Figure 4 is a schematic diagram of the power component of the bridge-type grab ship unloader of the present invention after removing the driven wheel;

[0023] Figure 5 is a front view of the trolley of the bridge-type grab ship unloader of the present invention;

[0024] Figure 6 is a top view of the trolley of the bridge-type grab ship unloader of the present invention;

[0025] Figure 7 This is a schematic diagram of the winding structures of the hoisting wire rope, the opening and closing wire rope, and the towing rope of the bridge-type grab ship unloader of the present invention.

[0026] Description of the reference numerals in the drawings:

[0027] 1: Steel support structure;

[0028] 2: Bridge structure, 21: Upper rope supporting roller, 22: Lower rope supporting roller;

[0029] 3: Hoisting and opening / closing mechanism;

[0030] 31: Hoisting mechanism, 311: Hoisting power device, 312: Hoisting speed reducer, 313: Hoisting drum, 314: Hoisting pulley;

[0031] 32: Opening / closing mechanism, 321: Opening / closing power device, 322: Opening / closing speed reducer, 323: Opening / closing drum, 324: Opening / closing pulley;

[0032] 33: Hoisting wire rope, 34: Opening / closing wire rope;

[0033] 4: Luffing mechanism;

[0034] 5: Trolley, 51: Frame, 52: Traveling wheel, 53: Horizontal wheel;

[0035] 54: Wire rope guiding roller group, 541: Roller, 542: Arc-shaped groove;

[0036] 6: Grab;

[0037] 7: Trolley towing mechanism;

[0038] 71: Power assembly, 711: Trolley towing power device, 712: Reducer, 713: Driving power wheel, 714: Driven power wheel;

[0039] 72: Towing rope;

[0040] 8: Discharging system; 9: Traveling mechanism. Detailed implementation manners

[0041] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0042] As Figures 1 to 7As shown in the figure, the bridge-type grab ship unloader of the present invention includes a steel support structure 1, a bridge structure 2, a hoisting and closing mechanism 3, a pitching mechanism 4, a trolley 5, a grab 6, a trolley traction mechanism 7, a discharging system 8 and a traveling mechanism 9. The bridge structure 2 is arranged at the upper end of the steel support structure 1. The hoisting and closing mechanism 3 is arranged on the steel support structure 1 and connected to the grab 6 for hoisting and closing the grab 6. The pitching mechanism 4 is arranged at the upper end of the steel support structure 1 and connected to the bridge structure 2 for pitching the bridge structure 2. The trolley 5 is slidably arranged on the bridge structure 2. The trolley traction mechanism 7 is arranged on the bridge structure and connected to the trolley 5 for providing driving force to the trolley 5. The discharging system 8 is arranged in the middle of the steel support structure 1 for discharging the grab 6. The traveling mechanism 9 is arranged at the bottom of the steel support mechanism for driving the steel support structure 1, wherein:

[0043] The hoisting and closing mechanism 3 includes a hoisting mechanism 31, a closing mechanism 32, a hoisting steel wire rope 33 and a closing steel wire rope 34. The hoisting mechanism 31 and the closing mechanism 32 are arranged in a row. The hoisting steel wire rope 33 is arranged on the hoisting mechanism 31 and connected to the grab 6 for controlling the hoisting of the grab 6. The closing steel wire rope 34 is arranged on the closing mechanism 32 and connected to the grab 6 for controlling the closing of the grab 6;

[0044] The trolley traction mechanism 7 includes a power assembly 71 and a traction rope 72. The traction rope 72 is arranged between the power assemblies 71 and connected to the trolley 5 for pulling the trolley 5 to move along the bridge structure 2.

[0045] Further, in the bridge-type grab ship unloader of the present invention, the trolley 5 includes a frame 51, traveling wheels 52, horizontal wheels 53 and a steel wire rope guiding roller group 54. The traveling wheels 52 are arranged in a rectangle at both sides of the bottom of the frame 51 and are in rolling connection with the bridge structure 2. The horizontal wheels 53 are arranged in a rectangle at the front and rear ends of the frame 51 for keeping the frame 51 moving horizontally. The steel wire rope guiding roller group 54 is arranged in a row in the middle of the frame 51.

[0046] Further, in the bridge-type grab ship unloader of the present invention, the power assembly 71 includes a trolley traction power device 711, a reducer 712, a driving power wheel 713 and a driven power wheel 714. The reducer adopts a conventional parallel shaft reducer. The trolley traction power device 711 is fixed to the end of the bridge structure 2 by bolts. The driving power wheel 713 is connected to the output end of the trolley traction power device 711 through the reducer 712. The driven power wheel 714 is fixed to the front end of the bridge structure 2 by bolts. The traction rope 72 is respectively sleeved on the driving power wheel 713 and the driven power wheel 714. The traction rope 72 is connected to both sides of the frame 51;

[0047] Among them, the towing rope 72 can be made of steel wire rope or chain. The driving pulley 713 and the driven pulley 714 are friction pulleys or sprocket wheels. By rotating the driving pulley 713, the towing rope 72 is driven between the driving pulley 713 and the driven pulley 714. That is, when the towing rope 72 is a steel wire rope, the driving pulley 713 and the driven pulley 714 are friction pulleys, and the towing rope 72 is driven by friction to drive the trolley 5 to move. When the towing rope 72 is a chain, the driving pulley 713 and the driven pulley 714 are sprocket wheels, and the trolley 5 is driven by the meshing transmission of the chain and the sprocket wheel teeth.

[0048] Further, in the bridge-type grab ship unloader of the present invention, the hoisting mechanism 31 includes a hoisting power device 311, a hoisting speed reducer 312, a hoisting drum 313, and a hoisting pulley 314. The hoisting speed reducer 312 is a conventional parallel shaft reducer. The hoisting power device 311 is fixed to the upper end of one side of the steel support structure 1 by bolts. The hoisting drum 313 is connected to the output end of the hoisting power device 311 through the hoisting speed reducer 312. The hoisting pulley 314 is fixed to the top of the other side of the steel support structure 1 by bolts.

[0049] Further, in the bridge-type grab ship unloader of the present invention, one end of the hoisting steel wire rope 33 is wound around the hoisting drum 313, and the other end of the hoisting steel wire rope 33 bypasses the hoisting pulley 314 and passes through the steel wire rope guiding roller group 54 to be connected to the grab 6.

[0050] Further, in the bridge-type grab ship unloader of the present invention, the opening and closing mechanism 32 includes an opening and closing power device 321, an opening and closing speed reducer 322, an opening and closing drum 323, and an opening and closing pulley 324. The opening and closing speed reducer 322 is a conventional parallel shaft reducer. The opening and closing power device 321 is fixed to the upper end of one side of the steel support structure 1 by bolts. The opening and closing drum 323 is connected to the output end of the opening and closing power device 321 through the opening and closing speed reducer 322. The opening and closing pulley 324 is fixed to the top of the other side of the steel support structure 1 by bolts.

[0051] Further, in the bridge-type grab ship unloader of the present invention, one end of the opening and closing steel wire rope 34 is wound around the opening and closing drum 323, and the other end of the opening and closing steel wire rope 34 bypasses the opening and closing pulley 324 and passes through the steel wire rope guiding roller group 54 to be connected to the grab 6;

[0052] When hoisting and opening / closing, after the hoisting wire rope 33 and the opening / closing wire rope 34 extend from the hoisting drum 313 and the opening / closing drum 323, they pass around the hoisting pulley 314 and the opening / closing pulley 324 at the top of the steel support structure 1 and then wind around the wire rope guiding roller group 54. The hoisting wire rope 33 and the opening / closing wire rope 34 form an angle with the trolley 5 in the horizontal direction. The suspension of the hoisting wire rope 33 and the opening / closing wire rope 34 has little impact on the system, and the bounce of the hoisting wire rope 33 and the opening / closing wire rope 34 during the hoisting and opening / closing operations is small. There is no need to make a rope-supporting trolley. The trolley 5 bears part of the vertical load and horizontal load, reducing the structural size and weight. Moreover, when the grab 6 is fully loaded, the grab 6 and the material generate a horizontal force backward, which can be used as the driving force of the trolley 5, and the work done by the trolley traction mechanism 7 is small, saving energy.

[0053] Further, in the bridge-type grab unloader of the present invention, the wire rope guiding roller group 54 is composed of two rollers 541. An arc-shaped groove 542 is provided around the outer diameter of the roller 541, and the diameter of the arc-shaped groove 542 matches the diameters of the hoisting wire rope 33 and the opening / closing wire rope 34.

[0054] Further, in the bridge-type grab unloader of the present invention, upper rope-supporting rollers 21 and lower rope-supporting rollers 22 are provided on the bridge structure 2, and the traction rope 72 is respectively lapped on the upper rope-supporting rollers 21 and the lower rope-supporting rollers 22, so that the suspension of the traction rope 72 is small.

[0055] In summary, compared with the prior art, the bridge-type grab unloader of the present invention has the following advantages and beneficial effects:

[0056] The overall structure of the present invention is simple. The hoisting mechanism and the opening / closing mechanism are independent of each other. A conventional parallel-axis reducer can be used for the reducer. The working conditions are simple, the self-weight is small, and the cost is low. The suspension of the wire rope is effectively reduced. Through the cooperation of the hoisting mechanism and the hoisting wire rope, and the opening / closing mechanism and the opening / closing wire rope, the hoisting wire rope and the opening / closing wire rope form an angle with the horizontal direction, effectively reducing the influence of the suspension of the hoisting wire rope and the opening / closing wire rope on the system. The bounce of the wire rope during the hoisting and opening / closing operations is small, and there is no need to make a rope-supporting trolley. The trolley bears part of the vertical load and horizontal load, effectively reducing the structural size and weight of the trolley. Moreover, when the grab is fully loaded, the grab and the material generate a horizontal force backward, which can be used as the driving force of the trolley, effectively reducing the work done by the power components, saving energy. At the same time, the cross-sectional sizes and weights of the steel support structure and the bridge structure are effectively reduced, reducing the comprehensive costs of manufacturing, installing, and maintaining the unloader.

[0057] It should be noted that, in this article, unless otherwise clearly specified and defined, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood according to specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. In addition, in this article, "front", "rear", "left", "right", "upper" and "lower" are all referenced to the placement state shown in the drawings.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bridge type grab ship unloader, characterized in that: The bridge-type grab ship unloader includes a steel support structure, a bridge structure, a lifting and closing mechanism, a pitching mechanism, a trolley, a grab, a trolley traction mechanism, a unloading system and a walking mechanism. The bridge structure is arranged at the upper end of the steel support structure, the lifting and closing mechanism is arranged on the steel support structure and connected to the grab, and is used for lifting and opening and closing the grab. The pitching mechanism is arranged at the upper end of the steel support structure and connected to the bridge structure, and is used for pitching the bridge structure. The trolley is slidably arranged on the bridge structure, and the trolley traction mechanism is arranged on the bridge structure and connected to the trolley, and is used to provide driving force for the trolley. The unloading system is arranged in the middle of the steel support structure, and is used for the grab to unload. The walking mechanism is arranged at the bottom of the steel support mechanism, and is used to drive the steel support structure, wherein: The lifting and opening and closing mechanism comprises a lifting mechanism, an opening and closing mechanism, a lifting wire rope and an opening and closing wire rope, wherein the lifting mechanism and the opening and closing mechanism are arranged in parallel, the lifting wire rope is arranged on the lifting mechanism and connected to the grab bucket, and is used to control the lifting of the grab bucket, and the opening and closing wire rope is arranged on the opening and closing mechanism and connected to the grab bucket, and is used to control the opening and closing of the grab bucket; The trolley traction mechanism includes a power assembly and a traction rope. The traction rope is arranged between the power assemblies and connected to the trolley, and is used for traction of the trolley to move along the bridge structure.

2. The bridge grab ship unloader according to claim 1, characterized in that: The trolley includes a frame, walking wheels, horizontal wheels and a wire rope guide roller group. The walking wheels are rectangularly arranged on both sides of the bottom of the frame and are rollingly connected to the bridge structure. The horizontal wheels are rectangularly arranged at the front and rear ends of the frame to keep the frame moving horizontally. The wire rope guide roller group is arranged in the middle of the frame.

3. The bridge grab ship unloader according to claim 2, characterized in that: The power assembly includes a trolley traction power device, a reducer, a main power wheel and a driven power wheel. The trolley traction power device is fixed to the end of the bridge structure by bolts, the main power wheel is connected to the output end of the trolley traction power device through the reducer, the driven power wheel is fixed to the front end of the bridge structure by bolts, the traction rope is respectively connected to the main power wheel and the driven power wheel, and the traction rope is connected to both sides of the frame.

4. The bridge grab ship unloader according to claim 2, characterized in that: The lifting mechanism includes a lifting power device, a lifting reducer, a lifting drum and a lifting pulley. The lifting power device is fixed to the upper end of one side of the steel support structure by bolts, the lifting drum is connected to the output end of the lifting power device through the lifting reducer, and the lifting pulley is fixed to the top of the other side of the steel support structure by bolts.

5. The bridge grab ship unloader according to claim 4, characterized in that: One end of the lifting wire rope is wound around the lifting drum, and the other end of the lifting wire rope passes around the lifting pulley and passes through the wire rope guide roller group to be connected with the grab bucket.

6. The bridge grab ship unloader according to claim 2, characterized in that: The opening and closing mechanism includes an opening and closing power device, an opening and closing reducer, an opening and closing drum and an opening and closing pulley. The opening and closing power device is fixed to the upper end of one side of the steel support structure by bolts, the opening and closing drum is connected to the output end of the opening and closing power device through the opening and closing reducer, and the opening and closing pulley is fixed to the top of the other side of the steel support structure by bolts.

7. The bridge grab ship unloader according to claim 6, characterized in that: One end of the opening and closing steel wire rope is wound around the opening and closing drum, and the other end of the opening and closing steel wire rope passes around the opening and closing pulley and passes through the steel wire rope guide roller group to be connected with the grab bucket.

8. The bridge grab ship unloader according to claim 2, characterized in that: The wire rope guide roller group consists of two rollers, and an arc groove is arranged around the outer diameter of the roller. The diameter of the arc groove matches the diameter of the lifting wire rope and the opening and closing wire rope.

9. The bridge grab ship unloader according to claim 1, characterized in that: An upper rope supporting roller and a lower rope supporting roller are arranged on the bridge frame structure, and the traction rope is respectively overlapped on the upper rope supporting roller and the lower rope supporting roller.

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