Tire type gantry crane and mobile devices thereof
Technical field
The utility model relates to steering technique, is specifically related to a kind of mobile devices for tire type gantry crane; In addition, the utility model also relates to the tire type gantry crane with above-mentioned mobile devices.
Background technology
Tire type gantry crane be a kind of at harbour, harbour carries out goods (such as freight container) and loads and unloads and store up the big machinery of operation, it can help people to load and unload efficiently or store up goods.
Conventionally, the work-yard of tire type gantry crane is larger, when operation, often need to change control position (being commonly called as transition).In the time of transition, conventionally need to make tire type gantry crane turn to, existing common cart tire has turned to following two kinds of modes:
1, hydraulic ram promotes to turn to: steering hardware comprises positional cylinder, steering cylinder, lock pin oil cylinder and electric limiting switch; Positional cylinder, steering cylinder and lock pin oil cylinder are all arranged under equalizing bar, and steering cylinder is arranged under the nearly inner side of equalizing bar, and positional cylinder is arranged under the nearly outside of equalizing bar, and lock pin oil cylinder arranges between steering cylinder and positional cylinder.Steering cylinder cylinder body is connected with equalizing bar by bearing, and its output shaft is connected with vehicle frame by another bearing; Electric limiting switch provides turn sign, turns to by regulating the collapsing length of steering cylinder to control tire.
2, electric pushrod promotes to turn to: the fixed end of electric pushrod is installed on a side of the below of equalizing bar, movable end is connected with the wheel supporting vehicle frame of equalizing bar one end, the vehicle frame being connected with electric pushrod is connected with the vehicle frame of the equalizing bar other end by a Linkage steering, and this Linkage steering is arranged in the opposite side of equalizing bar below with respect to electric pushrod.In the time that electric pushrod work is extended, the wheel vehicle frame that promotes to be connected with its movable end rotates.This vehicle frame by turning to push rod to promote other end frame-steering, turns to thereby realize whole large mechanism of car again.
Be no matter that above-mentioned hydraulic ram promotes to turn to, or electric pushrod promotes to turn to, realization be being all synchronized with the movement of left and right vehicle frame under equalizing bar, can only meet 0 ° with the needs of 90 ° of large vehicle walkings; In the time need to realizing the cast of hoisting crane, because left and right vehicle frame under equalizing bar can not be realized differential steering, cause this function to realize difficulty, cause the infringement of tire and portal frame.
Utility model content
In view of this, the utility model proposes a kind of mobile devices for tire type gantry crane, to solve in prior art, tire type gantry crane cannot be realized the problem of cast.In addition, the utility model also proposes a kind of tire type gantry crane with above-mentioned mobile devices.
On the one hand, the utility model provides a kind of mobile devices of tire type gantry crane, comprise equalizing bar, front vehicle frame, rear vehicle frame, front vehicle wheel, rear wheel and actuating device, described front vehicle frame and rear vehicle frame be the rotating two ends that are arranged on described equalizing bar respectively, and described front vehicle wheel, rear wheel are arranged on respectively on front vehicle frame and rear vehicle frame; Described actuating device comprises front transfer bar mechanism and rear push-rod mechanism, and described front transfer bar mechanism, rear push-rod mechanism are respectively used to drive described front vehicle wheel and rear wheel to turn to.
Further, described mobile devices also comprise programmable logic controller (PLC), and described programmable logic controller (PLC) is for moving according to actuating device described in the plan deflection angle control of described tire type gantry crane.
Further, described front transfer bar mechanism and/or rear push-rod mechanism are electric pushrod, and described electric pushrod one end and equalizing bar are hinged, and the other end and front vehicle frame or rear vehicle frame are hinged.
Further, described front transfer bar mechanism and/or rear push-rod mechanism comprise motor, screw mandrel and the drive disk assembly coordinating with screw mandrel; Described motor is fixedly installed on equalizing bar, and for driving screw mandrel to rotate, described drive disk assembly is arranged on front vehicle frame or rear vehicle frame.
Further, described front transfer bar mechanism and/or rear push-rod mechanism comprise gear and tooth bar, and described gear is arranged on front vehicle frame or rear vehicle frame; Described tooth bar is movably set on described equalizing bar, for driving described gear to rotate.
Further, described mobile devices also comprise inhibiting device, and described inhibiting device is for limiting the relative position of described front vehicle frame or rear vehicle frame and equalizing bar.
Further, described inhibiting device comprises limit bolt and spacing hole, and described limit bolt is movably set on described front vehicle frame or rear vehicle frame, and described spacing hole is arranged on described equalizing bar.
The mobile devices of the tire type gantry crane the utility model proposes are by adopting front transfer bar mechanism and rear push-rod mechanism individual drive front vehicle wheel and rear wheel to turn to, while making to turn to, the deflection angle of front vehicle wheel and rear wheel can be adjusted as required, to meet the needs of cast.
On the other hand, the utility model also provides a kind of tire type gantry crane, comprises the mobile devices of portal frame, dolly assembly and above-mentioned any one, and described portal frame is set up on the equalizing bar of four described mobile devices.
Compared with prior art, by adopting above-mentioned mobile devices, the tire type gantry crane the utility model proposes can turn round in original place.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the operation schematic diagram of the tire type gantry crane of the utility model specific embodiment proposition;
Fig. 2 is the structural representation of the mobile devices of the utility model specific embodiment proposition;
Fig. 3 is the birds-eye view of mobile devices part-structure shown in Fig. 2.
Description of reference numerals:
1-equalizing bar, 2-front vehicle frame, 3-front vehicle wheel 4-rear vehicle frame 5-rear wheel
6-front swing type mechanism 7-rear swing type mechanism 8-front transfer bar mechanism 9-rear push-rod mechanism
10-cart walking mechanism, 11-movable motor, 20-portal frame, 30-suspender
40-dolly assembly
The specific embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the utility model can combine mutually.Be elaborated below in conjunction with 1 to 3 pair of specific embodiment of the utility model of accompanying drawing.
As shown in Figure 1, the tire type gantry crane that the utility model specific embodiment proposes generally includes cart walking mechanism 10, portal frame 20, suspender 30 and dolly assembly 40, portal frame 20 is set up on cart walking mechanism 10, dolly assembly 40 is movably set on portal frame 20, and can move along portal frame 20, suspender 30 hangs on dolly assembly 40 and can follow dolly assembly 30 and moves.This tire type gantry crane is generally used for the storage yard operation of freight container, when operation, cart walking mechanism 10 drives whole tire type gantry crane to move to freight container and parks a little temporarily, then, dolly assembly 40 drives suspender 30 to move to the suitable height of freight container top, and suspender 30 clamps after freight container by the single movement of dolly assembly 40 or the interoperation of cart walking mechanism 10 and dolly assembly 40 container crane to predetermined stowed location.
In order to increase the load-carrying ability of tire type gantry crane, cart traveling mechanism 10 generally includes four mobile devices, and four mobile devices are symmetricly set on the left and right sides of the tire type gantry crane shown in Fig. 1.
As shown in Figures 2 and 3, these mobile devices specifically comprise equalizing bar 1, front vehicle frame 2, rear vehicle frame 4, front vehicle wheel 3, rear wheel 5, front swing type mechanism 6, rear swing type mechanism 7, programmable logic controller (PLC) (being commonly called as PLC) and actuating device, front vehicle frame 2, rear vehicle frame 4 are respectively by front swing type mechanism 6 and the rotating front-end and back-end that are arranged on equalizing bar 1 of rear swing type mechanism 7, and front vehicle wheel 3, rear wheel 5 are arranged on respectively on front vehicle frame 2 and rear vehicle frame 4; Actuating device specifically comprises front transfer bar mechanism 8 and rear push-rod mechanism 9, and front transfer bar mechanism 8, rear push-rod mechanism 9 are respectively used to drive front vehicle wheel 3 and rear wheel 5 to turn to.When tire type gantry crane transition, operating personal by PLC control front transfer bar mechanism 8, rear push-rod mechanism drives respectively front vehicle frame 2 and rear vehicle frame 4 relative equilibrium beams 1 to rotate, and then makes front vehicle wheel 3 and rear wheel 5 complete turning to separately.
In the above-described embodiments, can there be various mechanism in front transfer bar mechanism 8 and rear push-rod mechanism 9, and they can use identical structure, also can use different structure.Particularly, have following several structure at least:
1) adopt hydraulic ram to promote front vehicle frame 2 and rear vehicle frame 4 rotates, hydraulic ram one end and equalizing bar 1 are hinged, the other end and front vehicle frame 2 or vehicle frame 4 is hinged afterwards; While turning to, the piston rod of hydraulic ram stretches out or retracts and can drive front vehicle wheel 3 or rear wheel 5 to rotate.
2) adopt screw mechanism to promote front vehicle frame 2 and rear vehicle frame 4 rotates, screw mechanism comprises movable motor 11, screw mandrel and the screw thread Transmission coordinating with screw mandrel; Movable motor 11 is fixedly installed on equalizing bar 1, and for driving screw mandrel to rotate, drive disk assembly is arranged on front vehicle frame 2 or rear vehicle frame 4; While turning to, movable motor 11 drives screw mandrel to rotate, and by screw thread pair, rotatablely moving of screw mandrel is converted into the motion of translation of screw thread Transmission, and then drives front vehicle frame 2 or rear vehicle frame 4 to move.
3) adopt pinion and rack to promote front vehicle frame 2 and rear vehicle frame 4 rotates, gear is arranged on front vehicle frame 2 or rear vehicle frame 4; Tooth bar is movably set on equalizing bar 1, rotates for driven wheel; While turning to, tooth bar moves along self length direction, and then driven gear rotates, and gear and front vehicle frame 2 or afterwards vehicle frame 4 are fixedly connected with, and therefore, gear can drive front vehicle wheel 3 or rear wheel 5 to rotate.
In embodiment further, for keeping the relative angle of mobile devices and equalizing bar 1, prevent that in operation process, mobile devices turn to voluntarily, can consider, between front vehicle frame 2 and equalizing bar 1, rear vehicle frame 4 and equalizing bar 1, inhibiting device is set; Inhibiting device specifically can comprise limit bolt and spacing hole, and limit bolt is movably set on front vehicle frame 2 and rear vehicle frame 4, and spacing hole is arranged on equalizing bar 1; While having turned to, limit bolt is inserted to spacing hole and can limit the position relationship between front vehicle frame 2 and equalizing bar 1, rear vehicle frame 4 and equalizing bar 1.
The mobile devices of the tire type gantry crane that the utility model specific embodiment proposes are by adopting front transfer bar mechanism 8 and rear push-rod mechanism 9 individual drive front vehicle wheels 3 and rear wheel 5 to turn to, in the time that tire type gantry crane turns to, the deflection angle of front vehicle wheel 3 and rear wheel 5 can be adjusted separately as required, thereby can meet the needs of tire type gantry crane at cast.Compared with prior art, adopt the tire type gantry crane of these mobile devices to turn round in original place, greatly improve transition efficiency.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.