A kind of gantry frame type conveyer
Technical field
The utility model relates to a kind of gantry frame type conveyer.
Background technology
At present, domestic water transport market replaces the device of fixing extending type belt holder, mainly contained rotation, flexible and integrated overturn three kinds of belt holder folding and unfolding schemes; Rotation approach is that belt discharging system is divided into the bilge and bow two parts, and bow belt frame is designed to rotatable form, when boats and ships to be unsnatched after goods before departure, this part is rotated 180 ° backward and lies in cargo hold district.The advantage of this design is: the problem solving self-discharging sand dredger navigation safety and lockage efficiency preferably, to existing ship also easily via transformation.The drawback of this design is: one is because bilge part belt dressing need be promoted to the above certain altitude in first deck at bow place, sandstone could be transferred to bow belt holder, this lifting causes belt holder to take with loss cargo hold leading portion major part volume of compartment, affect belt feeder rate of discharging, meanwhile, during rotation simultaneously, when belt frame and hull are 90 degree of angles, produce additional capsizing moment greatly, comparatively large on the impact of Stability of Ship, easily cause boats and ships to turn on one's side; Flexible scheme is that fixing extending type jib is designed to telescopic box type structure, is partly or entirely retractable in cabin by bow belt holder.The drawback main manifestations of this scheme is: one is the problem that part folding and unfolding can not solve self-discharging sand dredger navigation safety and efficiency completely; If all folding and unfoldings, due to unusual time and effort consuming during folding and unfolding, manufacture difficulty is large, cost is high; Two is for existing ship, is difficult to realize this folding and unfolding mode by transformation, and namely this scheme is not suitable for the transformation of existing ship.To this, application number is 201410142062.6, name is called that the application for a patent for invention of self-discharging sand dredger foldable cage posture belt holder proposes the technical scheme of foldable cage posture belt holder, and its technical scheme is made up of drag link mechanism, hull, cage type one-level arm, four-bar mechanism and cage type secondary arm; Cage type one-level arm and hull are by drag link mechanism connection; Cage type one-level arm and cage type secondary arm are by four-bar mechanism connection.Although this scheme solves the problem of belt holder folding and unfolding, but it exists drag link mechanism, and load is excessive, during belt holder work, itself deadweight and material load are up to more than 50 tons, only bear by oil cylinder, once there is the problem that oil cylinder is drawn out, the serious accident that can belt holder be caused to topple, simultaneously, it is too concentrated that belt holder installs the stressed load of basic point, the problem that amount of deflection is excessive, easily cause the problem that hull ftractures, in addition, because its belt holder is cage type, therefore the belt roller in cage is installed on once damage, replacing difficulty is very big, therefore, develop a kind of novel gantry frame type conveyer for being badly in need of.
Utility model content
The purpose of this utility model is to provide a kind of gantry frame type conveyer, has conveying arm collapsible, and folding process is little to hull balance performance impact, occupies little space after folding, the features such as working stability, safety factor are high, and carrier roller replacing is easy.
Solution of the present utility model realizes like this, gantry frame type conveyer includes pedestal, portal frame, conveying arm, hydraulic ram and folding and unfolding winch, portal frame and conveying arm are installed on pedestal, folding and unfolding winch is connected with conveying arm through portal frame by steel rope, described hydraulic ram two ends are hinged pedestal and portal frame respectively, and the connection between portal frame and pedestal is hinged.When described conveyer conveying arm is opened, first by hydraulic ram, portal frame and conveying arm are holded up, when conveying arm and pedestal angle are greater than 90 °, hydraulic ram quits work, open folding and unfolding winch, conveying arm is put down, when reaching design attitude under Gravitative Loads, winch quits work, and steel rope holds conveying arm.Combined with steel rope by portal frame, the safety factor of gantry frame type conveyer can be increased substantially, conveying arm, steel rope and portal frame define stable dynamical equilibrium triangle mechanical structure, make conveying arm mounting base not fragile, and this mechanical structure can extend the length of conveying arm further, and according to the difference of convey materials, different folding and unfolding steel wire rope of windlass models can be selected can to solve the problem of conveying loads change according to different needs, particularly conveying arm can adjust angled conveyor by winch, thus reach discharging opening height with requiring random adjustment.
Another technical scheme of the present utility model is on above-mentioned basis, and described gantry frame type conveyer rear end is provided with spacing winch, and the steel rope link portal frame of spacing winch, spacing winch and oil cylinder combine and position portal frame.Like this, by the tensioning of spacing steel wire rope of windlass to portal frame, portal frame, spacing winch and pedestal constitute stable triangle mechanical structure, thus the bottom of portal frame is significantly reduced by bending stress load, and pedestal is not easy to damage.
Another technical scheme of the present utility model is on above-mentioned basis, and described spacing winch and conveying arm are arranged on the same axis.Like this, by spacing winch and conveying arm being arranged the stability that can improve gantry frame type conveyer on the same axis further.
Another technical scheme of the present utility model is on above-mentioned basis, and described spacing winch and portal frame are arranged on same pedestal.Like this, when spacing winch and portal frame are arranged on same pedestal, spacing steel wire rope of windlass, portal frame and pedestal define overall triangle force structure, and the stress that can reduce bottom low portal frame is concentrated, and prevents portal frame by the situation of torsion deformation.
Another technical scheme of the present utility model is on above-mentioned basis, described conveying arm is made up of at least two joint folding arms, folding arm interface is provided with hydraulic pressure four-bar mechanism, described four-bar mechanism includes two auxiliary connecting rods and three auxiliary connecting rods, cylinder pedestal is fixed on the folding arm of pedestal, on three auxiliary connecting rods of oil cylinder strut articulated four pole mechanism, open by the promotion of oil cylinder and contraction or fold folding arm.Like this, compare with traditional structure, four-bar mechanism is made up of two auxiliary connecting rods and three auxiliary connecting rods, by independent for each hinge-point, its stress performance can be made even more ideal, particularly wear and tear and significantly reduce, improve the service life of four-bar mechanism.
Another technical scheme of the present utility model is on above-mentioned basis, and described conveying arm is truss-like conveying arm.Like this, significantly can reduce the deadweight of conveying arm, and then the weight bearing power of conveying arm can be improved or extend the length of conveying arm further.
Another technical scheme of the present utility model is on above-mentioned basis, and described truss-like conveying arm is grooved truss, and described grooved truss comprises two truss sidewalls and a base plate truss.Like this, conveying arm is set to grooved truss, conveniently carrying roller and belt conveyor can be installed in groove, and open grooved truss can facilitate Fast Installation and the replacing of carrying roller and belt conveyor.
Another technical scheme of the present utility model is on above-mentioned basis, and described truss sidewall is box truss.Like this, truss sidewall is set to box truss, stability and the torsional property of conveying arm can be improved further, increased substantially the rigidity of truss sidewall, make it not yielding, compared with one side truss, improve rigidity, thus improve the stability of conveying.
Another technical scheme of the present utility model is on above-mentioned basis, is provided with carrying roller in described grooved truss groove.Like this, in conveying arm, very easily belt conveyor can be installed.
Another technical scheme of the present utility model is on above-mentioned basis, and described conveying arm empty size in the folding arm delivery chute at pedestal position is greater than the far-end folding arm outside dimension being attached thereto and connecing, thus forms complete hiding collapsible conveying arm.Like this, by folding for conveying arm suit, the space shared by conveying arm can be further reduced, improves the safety performance of gantry frame type conveyer.
Accompanying drawing explanation
Fig. 1 is one of schematic diagram of gantry frame type conveyer described in the utility model.
Fig. 2 be gantry frame type conveyer described in the utility model adopt the structural representation of four-bar mechanism.
Fig. 3 be gantry frame type conveyer described in the utility model adopt the structural representation of carrying roller.
Fig. 4 be gantry frame type conveyer described in the utility model adopt the structural representation of conveying arm.
Fig. 5 is another structural representation of gantry frame type conveyer described in the utility model.
Detailed description of the invention
Below in conjunction with Figure of description and specific embodiment, the utility model is described in further detail.
The utility model embodiment is as follows, portal frame 2 formula conveyer includes pedestal 1, portal frame 2, conveying arm 3, hydraulic ram 4 and folding and unfolding winch 5, portal frame 2 and conveying arm 3 are installed on pedestal 1, folding and unfolding winch 5 is connected with conveying arm 3 through portal frame 2 by steel rope, described hydraulic ram 4 two ends are hinged pedestal 1 and portal frame 2 respectively, and the connection between portal frame 2 and pedestal 1 is hinged.As shown in Figure 1, portal frame 2, conveying arm 3, hydraulic ram 4 and winch are all arranged on same pedestal 1, folding and unfolding winch 5 is connected with conveying arm 3 through portal frame 2 by steel rope, described hydraulic ram 4 two ends are hinged pedestal 1 and portal frame 2 respectively, and the connection between portal frame 2 and pedestal 1 is hinged.
In another embodiment of the utility model, described portal frame 2 formula conveyer rear end is provided with spacing winch 6, and the steel rope of spacing winch 6 connects portal frame 2, and spacing winch 6 and hydraulic ram 4 combine and position portal frame 2.As shown in Figure 1, portal frame 2 formula conveyer rear end is provided with spacing winch 6, and the steel rope of spacing winch 6 connects portal frame 2, and spacing winch 6 and hydraulic ram 4 combine and position portal frame 2.
In another embodiment of the utility model, described spacing winch 6 is arranged on the same axis with conveying arm 3.As shown in Figure 5, spacing winch 6 is arranged on the same axis with conveying arm 3.
In another embodiment of the utility model, described spacing winch 6 is arranged on same pedestal 1 with portal frame 2.As shown in Figure 1, spacing winch 6 and portal frame 2 are arranged on same pedestal 1, and described pedestal can be the pedestal of independent setting on hull or hull.
In another embodiment of the utility model, described conveying arm 3 is made up of at least two joint folding arms, folding arm interface is provided with hydraulic pressure four-bar mechanism 7, described four-bar mechanism includes two auxiliary connecting rods 8 and three auxiliary connecting rods 9, cylinder pedestal is fixed on the folding arm of pedestal 1, on three auxiliary connecting rods 9 of oil cylinder strut articulated four pole mechanism, open by the promotion of oil cylinder and contraction or fold folding arm.As shown in Figure 1, conveying arm 3 is made up of at least two joint folding arms, folding arm interface is provided with hydraulic pressure four-bar mechanism 7, described four-bar mechanism includes two auxiliary connecting rods 8 and three auxiliary connecting rods 9, cylinder pedestal is fixed on the folding arm of pedestal 1, on three auxiliary connecting rods 9 of oil cylinder strut articulated four pole mechanism, open by the promotion of oil cylinder and contraction or fold folding arm.As shown in Figure 2, described four-bar mechanism includes two auxiliary connecting rods 8 and three auxiliary connecting rods 9 and hydraulic ram and jointly forms.
In another embodiment of the utility model, described conveying arm 3 is truss-like conveying arm 3.As shown in Figure 4, conveying arm 3 is truss-like conveying arm 3.
In another embodiment of the utility model, described truss-like conveying arm 3 is grooved truss, and described grooved truss comprises two truss sidewalls 10 and a base plate truss 11.As shown in Figure 4, grooved truss comprises two truss sidewalls 10 and a base plate truss 11.
In another embodiment of the utility model, described truss sidewall 10 is box truss.As shown in Figure 4, truss sidewall 10 is box truss.
In another embodiment of the utility model, in described grooved truss groove, be provided with carrying roller 12.Carrying roller 12 is provided with as Figure 1 and Figure 4 in grooved truss groove.Be illustrated in figure 3 carrying roller be by three monomer cylinders be broken line arrange carrying roller.
In another embodiment of the utility model, described conveying arm 3 empty size in the folding arm delivery chute at pedestal 1 position is greater than the far-end folding arm outside dimension being attached thereto and connecing, thus forms complete hiding collapsible conveying arm 3.As shown in Figure 5, conveying arm 3 empty size in the folding arm delivery chute at pedestal 1 position is greater than the far-end folding arm outside dimension being attached thereto and connecing, thus forms complete hiding collapsible conveying arm 3.