A fixing device for truss beam and container crane

Abstract

The present invention discloses a fixing device for a truss girder, comprising a first bracket, a second bracket, a third bracket, an electro-hydraulic push rod, and a locking mechanism; the first bracket is disposed on the sea-side upper crossbeam; the second bracket is disposed below the first bracket; the third bracket is disposed on the truss girder; the electro-hydraulic push rod is disposed within the first bracket, the locking mechanism is disposed within the second bracket, and the lower end of the electro-hydraulic push rod is connected to the locking mechanism; the electro-hydraulic push rod is equipped with a hydraulic station, which drives the electro-hydraulic push rod to engage the locking mechanism and the third bracket, thereby connecting and fixing the sea-side upper crossbeam to the truss girder. The present invention also discloses a container crane including a fixing device for a truss girder. The present invention satisfies the height limit requirements of container cranes.

Description

Technical Field

[0001] The present invention relates to a technology for fixing a beam on a low-profile shore container crane, and more particularly to a fixing device for a truss beam and a container crane. Background Art

[0002] Due to historical and geographical constraints and multimodal transport considerations, many container terminals around the world are built near airports, placing the entire terminal below air routes. Consequently, strict height restrictions on crane equipment are imposed, and the demand for low-profile container transport equipment at trading ports is becoming increasingly urgent. With the increasing carrying capacity of ships, achieving the maximum possible lifting height under the spreader while maintaining specific height restrictions has become a key concern for terminal users. Developing a new generation of low-profile cranes to meet these new requirements is crucial.

[0003] Existing girder fixing systems require the girder to be tilted 80 degrees before being hooked and secured, which simply cannot meet the requirements of a truss girder. Because the truss girder extends in both land and sea directions, the girder fixing system adopts a "zero-gap" design principle to prevent the girder from moving in the direction of the trolley during crane operation. Summary of the Invention

[0004] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide a fixing device for a truss girder and a container crane to meet the height limit requirements of the container crane.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] In one aspect, a fixing device for a truss girder includes a first bracket, a second bracket, a third bracket, an electro-hydraulic push rod, and a locking mechanism;

[0007] The first bracket is arranged on the upper crossbeam on the sea side;

[0008] The second bracket is arranged below the first bracket;

[0009] The third bracket is provided on the truss beam;

[0010] The electro-hydraulic push rod is arranged in the first bracket, the locking mechanism is arranged in the second bracket, and the lower end of the electro-hydraulic push rod is connected to the locking mechanism;

[0011] The electro-hydraulic push rod is equipped with a hydraulic station, which drives the electro-hydraulic push rod to drive the locking mechanism to cooperate with the third bracket, so that the sea side upper beam and the truss beam are connected and fixed.

[0012] Preferably, the first bracket is welded to the sea side upper beam.

[0013] Preferably, a limiting device is further provided between the first bracket and the upper cross beam on the sea side.

[0014] Preferably, the second bracket is connected to the bottom of the first bracket by bolts.

[0015] Preferably, the third bracket is welded to the truss beam.

[0016] Preferably, the locking mechanism includes a fourth bracket and a roller;

[0017] The fourth bracket is arranged in an eight-shaped shape, and its upper end is connected to the lower end of the electro-hydraulic push rod through a pin shaft, so that the lower end of the fourth bracket moves in opposite directions around the pin shaft;

[0018] The roller is correspondingly arranged at the lower end of the fourth bracket and moves with the fourth bracket to open / close; and the third bracket is provided with a guide rail adapted to the movement of the roller;

[0019] The top of the third bracket is connected with a stopper via bolts.

[0020] Preferably, the upper end of the electro-hydraulic push rod is connected to the output side of the hydraulic station through a pin;

[0021] End covers are provided on both ends of the pin shaft.

[0022] Preferably, a wedge block limiter is provided on the first bracket.

[0023] On the other hand, a container crane includes the aforementioned fixing device for the truss girder;

[0024] There are four fixing devices, which are respectively arranged at the position of 62 to 63 meters of the forward extension of the truss beam, the position of 50 to 60 meters of the forward extension of the truss beam, the position of 39 to 40 meters of the forward extension of the truss beam and the position of 0 meter of the forward extension of the truss beam.

[0025] Preferably, a box beam is provided on the side of the upper cross beam on the sea side, and the fixing device is provided on the box beam.

[0026] The present invention provides a truss girder fixing device and a container crane, ensuring girder operational stability and safety under various operating conditions and meeting height restrictions for the entire crane. A container crane equipped with this fixing device not only secures the girder during operation, but also provides girder anchoring and maintenance functions, while also providing a parking position. The present invention is simple to operate, easy to install, and maintain, and offers a high safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1is a schematic diagram of the fixing device of the truss girder of the present invention in a non-working state;

[0028] Figure 2 is a schematic diagram of the fixing device of the truss girder of the present invention in a working state;

[0029] Figure 3 is a side view schematic diagram of a fixing device for a truss girder of the present invention;

[0030] Figure 4 yes Figure 2 A magnified schematic diagram of the I position in the middle;

[0031] Figure 5 It is a schematic diagram of the distribution of the fixing devices on the container crane of the present invention. DETAILED DESCRIPTION

[0032] In order to better understand the above technical solutions of the present invention, the technical solutions of the present invention are further described below with reference to the accompanying drawings and embodiments.

[0033] Combine Figures 1 to 4 As shown, a fixing device for a truss beam provided by the present invention includes a first bracket 1, a second bracket 2, a third bracket 3, an electro-hydraulic push rod 4 and a locking mechanism.

[0034] The first bracket 1 is welded to the upper cross beam 100 on the sea side.

[0035] The second bracket 2 is connected to the bottom of the first bracket 1 by bolts.

[0036] The third bracket 3 is welded to the truss girder 200 .

[0037] The electro-hydraulic push rod 4 is located in the first bracket 1, the locking mechanism is located in the second bracket 2, the lower end of the electro-hydraulic push rod 4 is connected to the locking mechanism, and the upper end of the electro-hydraulic push rod 4 is connected to the output side of the hydraulic station 6 through the pin shaft 5, and end covers 7 are installed on both ends of the pin shaft 5.

[0038] The hydraulic station 6 drives the electro-hydraulic push rod 4 downward to drive the locking mechanism to cooperate with the third bracket 3, so that the sea side upper cross beam 100 and the truss girder 200 are connected and fixed.

[0039] A limit device 8 is also installed between the first bracket 1 and the upper cross beam 100 on the sea side. When a storm or earthquake occurs, the limit device 8 can transmit the position to the ground operator through the sensing device thereon to protect the safety of the machine.

[0040] The locking mechanism includes a fourth bracket 9 and a roller 10;

[0041] The fourth bracket 9 is arranged in an eight-shaped shape, and its upper end is connected to the lower end of the electro-hydraulic push rod 4 through a pin shaft 11, so that the lower end of the fourth bracket 9 moves in opposite directions around the pin shaft 11.

[0042] The roller 10 is correspondingly mounted on the lower end of the fourth bracket 9 and moves with the fourth bracket 9 to open or close;

[0043] The third bracket 3 is provided with a guide rail adapted to the movement of the roller 10 .

[0044] The top of the third bracket 3 is connected to a stopper 12 via bolts.

[0045] A wedge limiter 13 is installed on the first bracket 1 .

[0046] When the fourth bracket 9 moves downward with the electro-hydraulic push rod 4, the roller 10 contacts the bottom of the guide rail on the third bracket 3, and the lower end of the fourth bracket 9 moves in the opposite direction around the pin shaft 11, and the roller 10 also opens until the roller 10 is inserted into the grooves on both sides of the guide rail that form a match with it and sticks to it, finally connecting and fixing the upper cross beam 100 on the sea side and the truss beam 200.

[0047] The wedge stopper 13 serves as a warning and protection and is welded directly to the first bracket 1. One side of the stopper 12 is bolted to the third bracket 3. When the truss girder 200 needs to operate, the electro-hydraulic push rod 4 connects to the stopper 12 and pulls the rollers 10 together, allowing the truss girder 200 to move back and forth. When the truss girder 200 needs to stop, the electro-hydraulic push rod 4 connects to the stopper 12, causing the rollers 10 to open, locking the truss girder 200 and shutting it down.

[0048] Combine Figure 5 As shown, the present invention further provides a container crane, comprising the fixing device of the truss girder of the present invention.

[0049] Four fixing devices 300 are provided on the truss girder 200: at a reach of 62.5 meters (the first operating position of the truss girder 200), a reach of 50.6 meters (the second operating position of the truss girder 200), a reach of 39.6 meters (the operating, anchoring, and maintenance position of the truss girder 200), and a reach of 0 meters (the parking position of the truss girder 200). These four fixing positions on the girder accommodate the operation of the spreader in various working conditions.

[0050] A box beam is installed on the side of the upper crossbeam 100 on the sea side, and the fixing device 300 is installed on the box beam. The box beam design has a strong load-bearing effect and is safe and reliable. At the same time, positioning bolts are added at each position to facilitate installation and construction.

[0051] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A fixing device for a truss girder, characterized in that: It includes a first bracket, a second bracket, a third bracket, an electro-hydraulic push rod and a locking mechanism; The first bracket is arranged on the upper crossbeam on the sea side; The second bracket is arranged below the first bracket; The third bracket is provided on the truss beam; The electro-hydraulic push rod is arranged in the first bracket, the locking mechanism is arranged in the second bracket, and the lower end of the electro-hydraulic push rod is connected to the locking mechanism; The electro-hydraulic push rod is equipped with a hydraulic station, which drives the electro-hydraulic push rod to drive the locking mechanism to cooperate with the third bracket, so that the sea side upper beam and the truss beam are connected and fixed.

2. The fixing device for a truss girder according to claim 1, characterized in that: The first bracket is welded to the sea side upper beam.

3. The fixing device for a truss girder according to claim 2, characterized in that: A limiting device is also provided between the first bracket and the upper cross beam on the sea side.

4. The fixing device for a truss girder according to claim 1, characterized in that: The second bracket is connected to the lower side of the first bracket through bolts.

5. The fixing device for a truss girder according to claim 1, characterized in that: The third bracket is welded to the truss beam.

6. The fixing device for a truss girder according to claim 1, characterized in that: The locking mechanism includes a fourth bracket and a roller; The fourth bracket is arranged in an eight-shaped shape, and its upper end is connected to the lower end of the electro-hydraulic push rod through a pin shaft, so that the lower end of the fourth bracket moves in opposite directions around the pin shaft; The roller is correspondingly arranged at the lower end of the fourth bracket and moves with the fourth bracket to open / close; and the third bracket is provided with a guide rail adapted to the movement of the roller; The top of the third bracket is connected with a stopper via bolts.

7. The fixing device for a truss girder according to claim 1, characterized in that: The upper end of the electro-hydraulic push rod is connected to the output side of the hydraulic station through a pin; End covers are provided on both ends of the pin shaft.

8. The fixing device for a truss girder according to claim 1, characterized in that: The first bracket is provided with a wedge limiter.

9. A container crane, characterized in that: A fixing device for a truss girder comprising the device according to any one of claims 1 to 8; There are four fixing devices, which are respectively arranged at the position of 62 to 63 meters of the forward extension of the truss beam, the position of 50 to 60 meters of the forward extension of the truss beam, the position of 39 to 40 meters of the forward extension of the truss beam and the position of 0 meter of the forward extension of the truss beam.

10. The container crane according to claim 9, characterized in that: A box beam is provided on the side surface of the upper cross beam on the sea side, and the fixing device is provided on the box beam.

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