Double-box-girder traction load-type trolley narrow-gauge quay crane

Abstract

The utility model relates to the technical field of container quay cranes, and discloses a double-box-girder traction load-type trolley narrow-gauge quay crane which comprises a door frame and double box girders arranged on the door frame, a trolley is arranged below the double box girders and hung on two box girder tracks through a T-shaped inner suspension, a trolley machine room is arranged on the trolley hung on the double box girders, and the double box girders are connected with the trolley machine room. A lifting mechanism is arranged in the trolley machine room and drives the lifting appliance, and the trolley is driven by a traction mechanism to move on the double-box-girder track. A double-box-girder structure is adopted, the T-shaped suspension traction type trolley is matched, and a hoisting mechanism is kept in a trolley machine room, so that the stress form of the trolley is improved, the weight of the trolley is reduced, the phenomenon of rail gnawing caused by no trolley is eliminated, and the maintenance difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of container quay cranes, in particular to a double-box-beam traction load-carrying trolley narrow-gauge quay crane. Background Art

[0002] Single-box girder heavy-duty trolley quay cranes were widely used in early products and are still in production today, but they account for a very small proportion. Relatively speaking, double-box girder quay cranes have become the mainstream at present.

[0003] See attached Figure 4 , 5 The single-beam load-carrying trolley 100 is installed on the beam 300 through the U-shaped suspension 200. The biggest advantage of the single-box beam load-carrying trolley quay crane is that the lifting mechanism is simple and there is no complicated lifting wire rope winding system of the double-box beam. Since the lifting mechanism is arranged on the trolley, the wire rope winding is simple and efficient. However, the biggest problem is that the lifting mechanism is arranged on the trolley, and the single-box beam has a unique self-propelled drive, which makes the overall weight of the trolley much heavier than that of the double-box beam trolley (self-propelled or traction type). As a result, the trolley structure is prone to cracking, the operation vibration is large, and the trolley track is easily damaged.

[0004] In addition, because the beam tie rod is a single tie rod, the beam swings greatly in the direction of the trolley's movement, and the tie rod is prone to fatigue cracking. In addition, because the trolley is placed under the beam, it is inconvenient to maintain the equipment in the machine room. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned problems and provide a double-box girder traction load-bearing trolley narrow-gauge quay crane, which adopts a double-box girder structure, cooperates with a T-type suspension traction trolley, retains the lifting mechanism in the trolley machine room, improves the force form of the trolley, reduces the weight of the trolley, eliminates the phenomenon of non-vehicle gnawing of the rails, and reduces the difficulty of maintenance.

[0006] The technical solution adopted by the utility model is:

[0007] A double-box-girder traction load-carrying trolley narrow-gauge quay crane comprises a door frame and a double box girder arranged on the door frame, wherein a trolley is arranged below the double box girder, the trolley is suspended on two box girder tracks through a T-shaped internal suspension, a trolley machine room is arranged on the trolley suspended on the double box girder, a lifting mechanism is arranged in the trolley machine room, the lifting mechanism drives a hoist, and drives the trolley to move on the double box girder track through a traction mechanism.

[0008] Furthermore, the lifting wire ropes of the lifting mechanism are arranged on the inner sides of the two box girders.

[0009] Furthermore, the track gauge of the trolley may be less than 4 meters.

[0010] Furthermore, the driver's cab of the double-box girder traction load-carrying trolley narrow-gauge quay crane is arranged on the ground.

[0011] Furthermore, the driver's cab of the double-box girder traction load-carrying trolley narrow-gauge quay crane is arranged at the rear end of the trolley.

[0012] Furthermore, the double box beam includes a front beam and a rear beam, the front and rear beams are connected by a hinge, the front beam is located in front of the hinge, and the rear beam is arranged behind the hinge, and a T-shaped frame is arranged on the door frame, and the T-shaped frame overcomes the gravity of the front beam and the rear beam through a front pull rod and a rear pull rod.

[0013] Furthermore, there are multiple front pull rods, which are respectively arranged at different positions in the length direction of the front beam and are arranged symmetrically on the left and right. The front pull rod sections are connected by hinges and connecting plates.

[0014] Furthermore, the front pull rod and the rear pull rod are connected to the front and rear beams via a T-shaped frame, and the front pull rod is used to adjust the tension with the front beam.

[0015] The beneficial effects of the utility model are:

[0016] 1. The double box beam and T-shaped positive suspension trolley are used to improve the stress form of the load-bearing trolley. The trolley runs more smoothly and the cracking of the trolley mechanism is improved;

[0017] 2. The heavy-load trolley is driven by traction. The trolley and pitch drive mechanism are set in the machine room, and the machine room is set above the rear beam. The lifting drive mechanism is set in the trolley machine room, which reduces the weight of the trolley. At the same time, the trolley is not prone to rail gnawing and deviation;

[0018] 3. The lifting mechanism is set in the trolley room, with high operating efficiency and convenient replacement of wire rope;

[0019] 4. The double box girder increases the access to the trolley machine room for maintenance, reducing the difficulty of maintaining the trolley machine room mechanism.

[0020] 5. Reduced the cracking of beam tie rods;

[0021] 6. Through the upgrade of control technology, the driver's cab can be arranged on the ground, which is safer and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Attached Figure 1 It is a schematic diagram of the three-dimensional structure of the quay crane of the utility model;

[0023] Attached Figure 2 This is a partial enlarged view of the front beam of the quay crane;

[0024] Attached Figure 3 It is a schematic diagram of the trolley assembly in the utility model;

[0025] Attached Figure 4 It is a schematic diagram of the three-dimensional structure of a single box girder quay crane in the prior art;

[0026] Attached Figure 5 It is a schematic diagram of a trolley assembly with a single box beam in the prior art.

[0027] The reference numerals in the accompanying drawings are:

[0028] 1. Door frame; 2. Double box beam;

[0029] 3. Wheel rail; 4. Front beam;

[0030] 5. Rear beam; 6. T-shaped frame;

[0031] 7.Front tie rod; 8.Rear tie rod.

[0032] 9. Trolley; 10. T-type internal suspension;

[0033] 11. Trolley room; 12. Machine room;

[0034] 100. Trolley; 200. U-type suspension;

[0035] 300. Beam. DETAILED DESCRIPTION

[0036] The specific implementation method of the double-box girder traction load-carrying trolley narrow-gauge quay crane of the utility model is described in detail below in conjunction with the accompanying drawings.

[0037] See attached Figures 1 to 3 The double box beam traction load-carrying trolley narrow gauge quay crane of the utility model comprises a door frame 1 and a double box beam 2 arranged on the door frame 1. The door frame 1 cooperates with the track on the ground of the wharf through the trolley 3 below to complete the displacement in the front and rear directions.

[0038] The double box beam 2 is arranged above the door frame 1, and its length direction is perpendicular to the direction in which the door frame 1 moves on the ground. The double box beam 2 includes a front beam 4 and a rear beam 5, and the front and rear beams are connected by a hinge point. The front beam is located in front of the hinge point, and the rear beam is arranged behind the hinge point. The front beam 4 is located in front of the door frame 1, and the rear beam 5 is arranged behind the door frame 1. A T-shaped frame 6 is arranged on the door frame 1, and the T-shaped frame 6 overcomes the gravity moment of the front beam 4 and the rear beam 5 through the front tie rod 7 and the rear tie rod 8.

[0039] There are multiple front tie rods 7, which are respectively arranged at different positions along the length of the front beam 4. The front tie rods 7 are connected in sections by hinges and connecting plates. The front tie rods 7 and the rear tie rods 8 are connected by a T-shaped frame 6. The tension between the front tie rods 7 and the front beam can be adjusted by adjusting the front tie rods 7. The safety hook on the T-shaped frame 6 plays a role in safety fixing when the beam is raised.

[0040] Similarly, the rear tie rod 8 of the rear beam 5 is also connected via a T-shaped frame 6 , and a machine room 12 is also installed at the position of the rear beam 5 , which can be used to offset the moment generated by the elongation and load of the front beam 4 .

[0041] A trolley 9 is arranged on the rail-bearing beam of the double box girder 2. The trolley 9 is suspended on the track of the double box girder 2 through a T-shaped internal suspension 10. A trolley machine room 11 is arranged on the trolley. A lifting mechanism is arranged in the trolley machine room 11. The lifting mechanism drives the lifting device of the trolley 9. The traction mechanism in the machine room 12 drives the trolley 9 to move on the track of the double box girder 2. The traction wire rope of the lifting mechanism is arranged on the inner side of the two box girders.

[0042] Because the lifting mechanism is arranged in the trolley room, the mechanism is simple, the wire rope drum is short, the wire rope is much shorter, the operation efficiency is high, and the replacement is convenient. It is far better than the arrangement of the lifting in the machine room using the wire rope winding system.

[0043] The use of double box beams with T-type internal suspension makes the load-carrying trolley suspension force mode better and the double beams are balanced. The vibration of the trolley and the problem of the trolley gnawing the rails are reduced. There is more space in the middle and top of the double box beams for the maintenance of the trolley. And the trolley is driven by traction, which reduces the overall weight of the trolley.

[0044] Due to the adoption of double box beams and load-carrying trolleys, the trolley gauge can be reduced to less than 4 meters. Generally, the span of a double box beam non-load-carrying trolley is about 6.5 meters, and that of a single box beam load-carrying trolley is about 4 meters. After the trolley gauge becomes smaller, in addition to the reduction in the weight of the entire machine, the most prominent feature is that the distance between the front beam and the high-rise building of the ship becomes larger during the operation of the quay crane, reducing the risk of collision. On this basis, the length of the machine room can be reduced by about 4 meters. The hydraulic system behind the beam only needs the trolley traction and towing trolley tensioning hydraulic system.

[0045] The driver's cab can be set at the rear end of the trolley. With the advancement of electrical technology and wireless network technology, the driver's cab can even be set on the ground, which can also conveniently operate various tasks of the quay crane, thus greatly improving the safety and convenience of the operator.

[0046] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A double-box-beam traction load-carrying trolley narrow-gauge quay crane, comprising a door frame and a double-box beam arranged on the door frame, characterized in that: A trolley is arranged below the double box girder, and the trolley is suspended on two box girder tracks through a T-shaped internal suspension. A trolley machine room is arranged on the trolley suspended on the double box girder, and a lifting mechanism is arranged in the trolley machine room. The lifting mechanism drives the hoisting device, and drives the trolley to move on the double box girder track through a traction mechanism.

2. The double-box girder traction load-carrying trolley narrow-gauge quay crane according to claim 1 is characterized in that: The lifting wire ropes of the lifting mechanism are arranged on the inner sides of the two box beams.

3. The double-box girder traction load-carrying trolley narrow-gauge quay crane according to claim 1 is characterized in that: The track gauge of the trolley may be less than 4 meters.

4. The double-box girder traction load-carrying trolley narrow-gauge quay crane according to claim 1 is characterized in that: The driver's cab of the double-box-beam traction load-carrying trolley narrow-gauge quay crane is arranged on the ground.

5. The double-box girder traction load-carrying trolley narrow-gauge quay crane according to claim 1 is characterized in that: The driver's cab of the double-box-beam traction load-carrying trolley narrow-gauge quay crane is arranged at the rear end of the trolley.

6. The double-box-beam traction load-carrying trolley narrow-gauge quay crane according to any one of claims 1 to 5, characterized in that: The double box beam includes a front beam and a rear beam, the front and rear beams are connected by a hinge, the front beam is located in front of the hinge, and the rear beam is arranged behind the hinge. A T-shaped frame is arranged on the door frame, and the T-shaped frame overcomes the gravity of the front beam and the rear beam through a front pull rod and a rear pull rod.

7. The double-box-beam traction load-carrying trolley narrow-gauge quay crane according to claim 6 is characterized in that: There are multiple front pull rods, which are respectively arranged at different positions in the length direction of the front beam and are arranged symmetrically. The front pull rods are connected in sections through hinges and connecting plates.

8. The double-box-beam traction load-carrying trolley narrow-gauge quay crane according to claim 6 is characterized in that: The front pull rod and the rear pull rod are connected to the front and rear beams through a T-shaped frame, and the front pull rod is used to adjust the tension degree with the front beam.

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