Container crane heightening device and heightening method

Abstract

The invention relates to the technical field of container wharf mechanical equipment, and discloses a container crane heightening device which is characterized in that two lower cross beams are arranged at the two ends of the bottom of a container crane, four walking trolleys are arranged at the four corners of the lower portions of the lower cross beams, and an anchoring mechanism is arranged below the middle position of each lower cross beam; the heightening device comprises four jacking devices, a plurality of flange jacking blocks and anchoring lengthening blocks, the jacking devices are arranged on the inner sides of the four walking trolleys below the lower cross beam, the four jacking devices jack the lower cross beam synchronously, the flange jacking blocks are fixed to the four walking trolleys and the lower cross beam, and the anchoring lengthening blocks are fixed to the flange jacking blocks. And an anchoring lengthening block is fixedly arranged on the anchoring mechanism. The invention further discloses a heightening method. According to the method, the cart part of the crane is heightened, the period is short, the cost is low, the construction safety is good, and the method is particularly suitable for occasions with the heightened height being 3 m or below.

Description

Technical Field

[0001] The present invention relates to the technical field of container terminal mechanical equipment, and in particular to a container crane heightening device and a heightening method. Background Art

[0002] Shore and yard container cranes are the most important equipment used in container ports. As container ships are getting bigger and bigger, the original shore container cranes can no longer meet the requirements. At the same time, the volume of containers is increasing and the container yard space is becoming increasingly tight. Therefore, appropriate modifications to these equipment can meet the requirements to the maximum extent under existing conditions. And raising the height of these equipment is the most effective way.

[0003] The most common way to increase the height of equipment is to lengthen the crane's legs. This method requires large-scale heightening equipment, a long construction period, and high costs. The process of lengthening the legs may involve destructive operations such as cutting and welding, which may lead to safety hazards. In addition, the lengthening of the legs will cause the center of gravity of the crane to move upward significantly, which is also a safety hazard. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems and provide a container crane heightening device and heightening method. By heightening the crane trolley part, the cycle is short, the cost is low, and the construction safety is good. It is particularly suitable for occasions where the height is below 3 meters.

[0005] The technical solution adopted by the present invention is: A container crane heightening device, wherein two lower cross beams are provided at both ends of the bottom of the container crane, four traveling trolleys are arranged on the four corners below the lower cross beams, and an anchoring mechanism is arranged below the middle position of each lower cross beam. The heightening device is characterized in that the heightening device includes four jacking devices, a plurality of flange jacking blocks and anchor extension blocks, the jacking devices are arranged on the inner sides of the four traveling trolleys below the lower cross beams, the four jacking devices synchronously jack up the lower cross beams, the flange jacking blocks are fixed on the four traveling trolleys and the lower cross beams, and the anchor extension blocks are fixed on the anchoring mechanisms.

[0006] Furthermore, after all the flange lifting blocks are fixed, the flange lifting blocks are replaced using the flange heightening sections.

[0007] Furthermore, the jacking device includes an inverted U-shaped upper support and a U-shaped lower support, two hydraulic jacks are connected between the upper support and the lower support, the two hydraulic jacks act synchronously, the upper support is in contact with the lower beam for support, and the two are arranged vertically.

[0008] Furthermore, after the hydraulic jack is lifted, a plurality of cushion blocks are sleeved on the stroke column, and the cushion blocks support the height of the jack after lifting.

[0009] Furthermore, the flange lifting block is square, and multiple flange lifting blocks are stacked to support the lifting height of the lower beam, and adjacent flange lifting blocks are connected by fastening bolts.

[0010] Furthermore, screw holes are arranged on the four corners of the upper plate and the lower plate of each flange lifting block, and the upper plate and the lower plate of the adjacent flange lifting blocks are connected on the screw holes by four fastening bolts, the upper plate of the top flange lifting block is fixed to the lower cross beam, and the lower plate of the bottom flange lifting block is fixed to the walking trolley.

[0011] Furthermore, the container crane is a shore or site container crane, and the height of the container crane is less than 3 meters.

[0012] A container crane heightening method, characterized in that it comprises the following steps: (1) Prepare materials, including the required equipment, flange lifting blocks, bolts and anchor extension blocks; (2) four lifting devices are arranged on the inner side of four traveling trolleys under the lower beam; (3) After the four lifting devices are connected to the hydraulic station and pressurized, the crane is lifted synchronously so that there is no force between the crane and the four traveling trolleys; (4) Release the connection between the traveling trolley and the lower beam; (5) The four lifting devices sequentially lift the lower cross beam to the height of a flange lifting block, and simultaneously or sequentially fix a flange lifting block between the four walking trolleys and the lower cross beam until the preset stroke of the lifting device is reached; (6) Add an extension block to the anchor mechanism under the lower beam so that the anchor mechanism supports the ground; (7) Use a forklift to remove the flange lifting blocks on the four corners one by one and replace them with the heightening sections; (8) Slowly remove the lifting device to complete the heightening of the crane.

[0013] Furthermore, in step (5), after the lifting device is lifted to a certain height, a cushion block is mounted on its stroke column, and the cushion block supports the height after the lifting.

[0014] Furthermore, the raising method also includes the steps of disassembling the ladder on the crane door leg before raising, and lengthening the ladder after raising.

[0015] The beneficial effects of the present invention are: (1) Short construction period, low cost and good safety; (2) Suitable for occasions where the height is less than 3 meters; (3) Applicable to various container cranes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1This is a schematic diagram of the structure before the crane is raised (the lifting device is in place); Attached Figure 2 It is a schematic diagram of the initial state of the jacking mechanism; Attached Figure 3 This is a schematic diagram of the state of the jacking mechanism after it is lifted; Attached Figure 4 This is a schematic diagram of the structure when the flange lifting block is installed; Attached Figure 5 It is a schematic diagram of the structure during the heightening process; Attached Figure 6 This is the front view of the crane after it is raised; Attached Figure 7 This is a side view of the crane after it is raised.

[0017] The reference numerals in the accompanying drawings are: 1. Lower beam; 2. Lifting device; 3. Traveling trolley; 4. Flange lifting block; 5. Anchoring extension block; 6. Anchoring mechanism; 7. Upper support; 8. Upper support; 9. Hydraulic jack; 10. Hydraulic station; 11. Pad; 12. Flange heightening section; 13. Fasten the bolts; 14. Escalator; 15. Crane. DETAILED DESCRIPTION

[0018] The specific implementation methods of the container crane heightening device and heightening method of the present invention are described in detail below with reference to the accompanying drawings.

[0019] Most container cranes are shore or site container cranes. Taking rail cranes as an example, two lower beams are provided at both ends of the bottom of the door legs of the container crane, four walking trolleys are provided on the four corners below the lower beams, and an anchoring mechanism is provided below the middle position of each lower beam.

[0020] See attached Figure 1 After the crane 15 is lifted up by the lifting device 2 under the lower cross beam 1, it is heightened between the traveling trolley 3 and the lower cross beam 1 to achieve the heightening of the crane 15.

[0021] The equipment used includes four jacking devices 2, several flange jacking blocks 4 and anchor extension blocks 5. The jacking devices 2 are arranged on the inner sides of four walking trolleys 3 below the lower cross beam 1. The four jacking devices 2 synchronously lift the lower cross beam 1, fix the flange jacking blocks 4 on the four walking trolleys 3, and fix the anchor extension blocks 5 on the anchoring mechanisms 6.

[0022] See attached Figure 2 , 3The lifting device 2 includes an inverted U-shaped upper support 7 and a U-shaped lower support 8. Two hydraulic jacks 9 are connected between the upper support 7 and the lower support 8. The two hydraulic jacks 9 are connected to a hydraulic station 10. The upper support 7 is in contact with and supported by the lower cross beam 1, and the two are arranged vertically. After the hydraulic station 10 applies pressure to the two hydraulic jacks 9, the jacks 9 are lifted upward, and the lifting force is transmitted to the lower cross beam 1 through the upper support 7. In order to ensure the maintenance of the lifting force of the jack 9, after the hydraulic jack 9 is lifted, a plurality of pads 11 are set on the stroke column, and the pads 11 are used to support the height of the jack 9 after lifting.

[0023] After the lifting device 2 lifts the lower beam 1 to a height of one person, the flange lifting blocks 4 are fixed on the four walking trolleys 3 to raise the lower beam 1 to a height. After all the flange lifting blocks 4 are fixed, the flange lifting blocks 4 are replaced with the flange heightening sections 12.

[0024] See attached Figure 4 The flange jacking block 4 is square, and multiple flange jacking blocks 4 are stacked to support the lifting height of the lower beam 1. Adjacent flange jacking blocks 4 are connected by fastening bolts 13. Screw holes are set on the four corners of the upper plate and the lower plate of each flange jacking block 4. The upper plate and the lower plate of the adjacent flange jacking blocks 4 are connected on the screw holes by four fastening bolts 13. The upper plate of the uppermost flange jacking block 4 is fixed to the lower beam 1, and the lower plate of the lowermost flange jacking block 4 is fixed to the walking trolley 3. The connection between the walking trolley 3 and the lower beam 1 is released at the beginning of the jacking. The bolts are selected to be larger than M12.

[0025] The stroke of jack 9 is 200mm, the cushion block is 11180mm high, plus an adjustment block. To ensure safety, the height increase is generally less than 3 meters.

[0026] See attached Figure 5 , 6 , 7. The specific construction process is as follows: First, prepare relevant materials, including the jacking device 2, the cushion block 11, the flange jacking block 4, the bolts and the anchor extension block 5, and prepare the operating tools.

[0027] The crane 15 is positioned at the construction location and can be fixed by fixing parts to prevent accidental movement. Four jacking devices 2 are fixedly arranged on the inner side of four traveling trolleys 3 under the lower cross beam 1. The four jacking devices 2 are connected to the hydraulic station 10 and pressurized to generate pre-tightening force between the jacking devices 2 and the lower cross beam 1.

[0028] Then the four lifting devices 2 synchronously lift the lower beam 1 of the crane 15 slightly. At this time, there is no force between the crane 15 and the four traveling trolleys 3. After the fastening connectors between the traveling trolley 3 and the lower beam 1 are released, the subsequent flange lifting block 4 can be connected.

[0029] Then continue to lift, lift the lower beam 1 to the height of a flange lifting block 4, synchronously or sequentially fix a flange lifting block 4 between the four walking trolleys 3 and the lower beam 1, and connect the flange lifting block 4 to the walking trolley 3 with bolts, then lift it to a higher height, insert another flange lifting block 4, this flange lifting block 4 is fixedly connected to the lower beam 1, and then insert another flange lifting block 4 and fix it between the upper and lower flange lifting blocks 4. After multiple lifting and inserting of the flange lifting block 4, the predetermined lifting height is reached, and the last flange lifting block 4 is fixedly connected with all bolts.

[0030] After the jacking device 2 is lifted to a certain height, a cushion block 11 is sleeved on its stroke column, and the cushion block 11 supports the height after lifting to ensure the stability of the lifting process.

[0031] After the flange jacking block 4 is fully installed, the height of the crane 15 is raised. Then, an extension block is added to the anchor mechanism 6 below the lower crossbeam 1 so that the anchor mechanism 6 supports the ground. The anchor extension block 5 is also pre-customized according to the length.

[0032] Finally, use a forklift to remove the 4 sets of flange jacking blocks on the four corners one by one and replace them with flange heightening sections 12. When removing, just remove the bolts connecting the 4 sets of flange jacking blocks to the lower crossbeam 1 and the walking trolley 3. When replacing the flange heightening sections 12, they should be replaced one by one, not at the same time, to avoid deviations and accidents.

[0033] Finally, the lifting device 2 is slowly removed to complete the heightening of the crane 15.

[0034] During the heightening process, other auxiliary equipment on the crane 15, such as the escalator 14, wires and cables, windproof cables, etc., are processed in advance and lengthened or arranged after the heightening to meet the various requirements of the crane 15.

[0035] The above are only preferred embodiments 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 container crane heightening device, wherein two lower cross beams are provided at both ends of the bottom of the container crane, four walking trolleys are provided at the four corners below the lower cross beams, and an anchoring mechanism is provided below the middle position of each lower cross beam, characterized in that: The heightening device includes four jacking devices, several flange jacking blocks and anchor extension blocks. The jacking devices are arranged on the inner sides of four walking trolleys below the lower cross beam. The four jacking devices synchronously jack up the lower cross beam, and the flange jacking blocks are fixed on the four walking trolleys and the lower cross beam, and the anchor extension blocks are fixed on the anchoring mechanism.

2. The container crane heightening device according to claim 1, characterized in that: After all the flange lifting blocks are fixed, the flange lifting blocks are replaced using the flange heightening sections.

3. The container crane heightening device according to claim 1, characterized in that: The jacking device includes an inverted U-shaped upper support and a U-shaped lower support. Two hydraulic jacks are connected between the upper support and the lower support. The two hydraulic jacks act synchronously. The upper support is in contact with the lower cross beam for support, and the two are arranged vertically.

4. The container crane heightening device according to claim 3, characterized in that: After the hydraulic jack is lifted, a plurality of cushion blocks are sleeved on the stroke column, and the cushion blocks support the height of the jack after lifting.

5. The container crane heightening device according to any one of claims 1 to 4, characterized in that: The flange lifting block is square, and multiple flange lifting blocks are stacked to support the lower crossbeam to increase its height, and adjacent flange lifting blocks are connected by fastening bolts.

6. The container crane heightening device according to claim 5, characterized in that: Screw holes are arranged on the four corners of the upper plate and the lower plate of each flange jacking block, and the upper plates and the lower plates of the adjacent flange jacking blocks are connected on the screw holes by four fastening bolts, the upper plate of the uppermost flange jacking block is fixed to the lower cross beam, and the lower plate of the lowermost flange jacking block is fixed to the walking trolley.

7. The container crane heightening device according to any one of claims 1 to 4, characterized in that: The container crane is a shore or site container crane, and the height of the container crane is less than 3 meters.

8. A container crane heightening method, using the container crane heightening device according to any one of claims 1 to 7, characterized in that: The steps include: (1) Prepare materials, including the required equipment, flange lifting blocks, bolts and anchor extension blocks; (2) four lifting devices are arranged on the inner side of four traveling trolleys under the lower beam; (3) After the four lifting devices are connected to the hydraulic station and pressurized, the crane is lifted synchronously so that there is no force between the crane and the four traveling trolleys; (4) Release the connection between the traveling trolley and the lower beam; (5) The four lifting devices sequentially lift the lower cross beam to the height of a flange lifting block, and simultaneously or sequentially fix a flange lifting block between the four walking trolleys and the lower cross beam until the preset stroke of the lifting device is reached; (6) Add an extension block to the anchor mechanism under the lower beam so that the anchor mechanism supports the ground; (7) Use a forklift to remove the flange lifting blocks on the four corners one by one and replace them with the heightening sections; (8) Slowly remove the lifting device to complete the heightening of the crane.

9. The method for increasing the height of a container crane according to claim 8, characterized in that: In step (5), after the lifting device is lifted to a certain height, a cushion block is mounted on its stroke column, and the cushion block supports the height after the lifting.

10. The method for increasing the height of a container crane according to claim 8 or 9, characterized in that: The heightening method also includes the steps of disassembling the ladder on the crane door leg before heightening and lengthening the ladder after heightening.

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