Truss-foldable rubber-tyred container gantry crane

Abstract

The utility model relates to a rubber-tyred container gantry crane, in particular to a truss-foldable rubber-tyred container gantry crane, which comprises a plurality of groups of cross beams, stand columns are mounted on the cross beams; the cross beams are connected through a folding mechanism; when the folding mechanism acts, the cross beams can be driven to get close to or away from each other; a hoisting mechanism is arranged on the cross beam and comprises a connecting frame; the connecting frame can horizontally ascend or descend so as to drive the container to horizontally ascend or descend; the folding mechanism drives the two adjacent cross beams to be far away from or close to each other, so that the distance between the connecting frames is increased or decreased, and the distance between the connecting frames is made to be matched with the size of a container needing to be hoisted. The hoisting difficulty and the danger are prevented from being increased due to the fact that the size of the container is larger than or smaller than the distance between the connecting frames; after the crane is used, the folding mechanism drives the cross beams to be close to each other and reach the maximum stroke position, so that the occupied space of the crane is reduced, and reasonable utilization of a site is facilitated.

Description

Technical Field

[0001] This utility model relates to a tire-mounted container gantry crane, specifically a tire-mounted container gantry crane with a foldable truss. Background Technology

[0002] A rubber-tired gantry crane (RTG) is a large, specialized lifting device used in container yards. It is typically supported by pneumatic rubber tires and can be powered by a diesel generator or a cable reel. The RTG can rotate within a 90° angle, facilitating easy movement from one yard to another, offering flexible operation.

[0003] A typical rubber-tired container gantry crane includes a gantry frame (providing a stable support structure), a power transmission system (providing a power source), a hoisting mechanism (for raising and lowering the spreader), a trolley traveling mechanism (controlling the horizontal movement of the crane), a trolley traveling mechanism (controlling the horizontal movement of the spreader), and a telescopic spreader (for grabbing and placing containers). Typically, the gantry frames are fixedly connected by trusses of fixed length, and the trolley traveling mechanism enables the spreader to move horizontally along the trusses.

[0004] Because the truss length and the spacing between the gantry supports are fixed, a large space needs to be prepared on site for storing the rubber-tired container gantry crane when not in operation, which is not conducive to the rational use of the site. Utility Model Content

[0005] The purpose of this utility model is to provide a foldable truss tire-mounted container gantry crane to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A foldable truss tire-mounted container gantry crane includes multiple sets of crossbeams; each crossbeam is equipped with a column at both ends.

[0008] The two adjacent crossbeams are connected by a folding mechanism; when the folding mechanism is activated, it can move the two crossbeams closer to or further apart from each other.

[0009] A lifting mechanism is provided on the crossbeam, the lifting mechanism including a connecting frame for connecting with the container; the connecting frame can be raised or lowered horizontally to drive the container to be raised or lowered horizontally.

[0010] The foldable truss tire-mounted container gantry crane described above: the folding mechanism includes multiple sets of first and second diagonal braces, which are rotatably mounted on a first rotating rod; one end of one first diagonal brace and one end of one second diagonal brace are rotatably mounted on the same second rotating rod, and the other end of one first diagonal brace and one end of another second diagonal brace are rotatably mounted on another second rotating rod; an mounting plate is installed on the crossbeam, and multiple sets of symmetrically arranged sliders are slidably fitted onto the mounting plate, wherein the slider on one side is fixedly connected to one second rotating rod; and the slider on the other side is fixedly connected to another second rotating rod.

[0011] The foldable truss tire-mounted container gantry crane described above includes: a folding mechanism further comprising a lead screw rotatably mounted on the mounting plate; an internally threaded sleeve threadedly connected to the lead screw rotatably mounted on the second rotating rod; a second bevel gear mounted at one end of the lead screw rotatably; a first rotating shaft rotatably mounted on the crossbeam; and multiple sets of first bevel gears meshing with the second bevel gears mounted on the first rotating shaft.

[0012] The truss-folding tire-mounted container gantry crane described above: the lifting mechanism includes a main motor mounted on the crossbeam; a second rotating shaft is mounted on the output end of the main motor, and multiple sets of rollers are mounted on the second rotating shaft; steel wire ropes are mounted on the rollers; and the steel wire ropes wrap around the rollers; the steel wire ropes are fixedly connected to the connecting frame.

[0013] As described above, the truss-foldable tire-mounted container gantry crane has the following features: a sliding groove is provided on the column, and two sets of fitting blocks are slidably fitted into the sliding groove, with the two sets of fitting blocks arranged symmetrically; a spring is installed on the fitting block and fixedly connected to the column; two sets of intersecting third diagonal braces are provided between the columns; the ends of the third diagonal braces are rotatably connected to the fitting blocks.

[0014] As described above, the truss-folding tire-mounted container gantry crane has a support platform installed at the bottom of the column.

[0015] As described above, the truss-folding tire-mounted container gantry crane has wheels rotatably mounted on the pedestal.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: The folding mechanism moves adjacent crossbeams closer or further apart, increasing or decreasing the distance between the connecting frames, thus adapting the distance between the connecting frames to the size of the container to be lifted; avoiding increased lifting difficulty and danger due to the container size being larger or smaller than the distance between the connecting frames; after adjusting the appropriate distance, the connecting frames are fixedly connected to the container, and the lifting mechanism drives the connecting frames to rise synchronously, thereby lifting the container while maintaining a horizontal position during the lifting process; avoiding the container tilting during lifting, which could cause the internal cargo position to shift, leading to a change in the container's center of gravity, resulting in lifting failure or even safety accidents; after use, the folding mechanism moves the crossbeams closer together to reach their maximum stroke, thereby reducing the crane's footprint and facilitating the rational use of the site. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a foldable truss-mounted tire-mounted container gantry crane.

[0018] Figure 2 This is a structural schematic diagram of a foldable truss tire-mounted container gantry crane from another perspective.

[0019] Figure 3 This is a schematic diagram of the third diagonal brace in a foldable truss tire-mounted container gantry crane.

[0020] Figure 4 This is a schematic diagram of the folding mechanism in a foldable truss tire-mounted container gantry crane.

[0021] Figure 5 for Figure 4 A schematic diagram of the structure at point A in the middle.

[0022] In the diagram: 1. Crossbeam;

[0023] 2. Column; 201. Foundation; 202. Wheel; 203. Slide;

[0024] 3. Mounting plate;

[0025] 4. First rotating shaft; 401. First bevel gear;

[0026] 5. Lead screw; 501. Second bevel gear;

[0027] 6. Internally threaded sleeve;

[0028] 7. First rotating rod;

[0029] 8. Second rotating rod;

[0030] 9. Slider;

[0031] 10. First diagonal brace;

[0032] 11. Second diagonal brace;

[0033] 12. Fitting block; 1201. Spring;

[0034] 13. Third diagonal brace;

[0035] 14. Electric motor;

[0036] 15. Second rotating shaft; 1501. Roller;

[0037] 16. Steel wire rope;

[0038] 17. Connecting frame. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0040] Please see Figures 1-5 As an embodiment of this utility model, the foldable truss tire-mounted container gantry crane includes multiple sets of crossbeams 1; each of the crossbeams 1 has a column 2 installed at both ends.

[0041] The two adjacent crossbeams 1 are connected by a folding mechanism; when the folding mechanism is activated, it can move the two crossbeams 1 closer to or further apart from each other.

[0042] A lifting mechanism is provided on the crossbeam 1. The lifting mechanism includes a connecting frame 17 for connecting with the container. The connecting frame 17 can be raised or lowered horizontally to drive the container to be raised or lowered horizontally.

[0043] In this embodiment, during use, the folding mechanism drives the two adjacent crossbeams 1 to move away from or closer to each other, thereby increasing or decreasing the distance between the connecting frames 17, so that the distance between the connecting frames 17 is adapted to the size of the container to be lifted; thus avoiding the increase in lifting difficulty and danger due to the container size being larger or smaller than the distance between the connecting frames 17.

[0044] After adjusting the appropriate spacing, the connecting frame 17 is fixedly connected to the container, and the connecting frame 17 is lifted synchronously by the hoisting mechanism to lift the container. During the lifting process, the container remains horizontal to avoid the container tilting during hoisting, which could cause the internal cargo to shift, thus changing the container's center of gravity, leading to hoisting failure or even safety accidents.

[0045] As a further embodiment of this utility model, the folding mechanism includes multiple sets of first diagonal braces 10 and second diagonal braces 11, the first diagonal braces 10 and the second diagonal braces 11 being rotatably mounted on a first rotating rod 7; and one end of one first diagonal brace 10 and one end of one second diagonal brace 11 being rotatably mounted on the same second rotating rod 8, the other end of one first diagonal brace 10 and one end of another second diagonal brace 11 being rotatably mounted on another second rotating rod 8; an mounting plate 3 is mounted on the crossbeam 1, and multiple sets of symmetrically arranged sliders 9 are slidably fitted on the mounting plate 3, wherein one side of the slider 9 is fixedly connected to one second rotating rod 8; and the other side of the slider 9 is fixedly connected to another second rotating rod 8.

[0046] In this embodiment, the first diagonal brace 10, the second diagonal brace 11, the first rotating rod 7, and the second rotating rod 8 form a "scissor structure".

[0047] When the first rotating rod 7 approaches the mounting plate 3, the first diagonal brace 10 and the second diagonal brace 11 will rotate, and the distance between the second rotating rod 8 connected to them will increase, thereby driving the slider 9 to slide on the mounting plate 3, so that the ends of the first diagonal brace 10 and the second diagonal brace 11 in the lateral direction will approach each other, thereby driving the two crossbeams 1 to approach each other.

[0048] When the first rotating rod 7 moves away from the mounting plate 3, the first diagonal brace 10 and the second diagonal brace 11 will rotate, and the distance between the second rotating rod 8 connected to them will decrease, thereby driving the slider 9 to slide on the mounting plate 3, so that the ends of the first diagonal brace 10 and the second diagonal brace 11 in the lateral direction will move away from each other, thereby driving the two crossbeams 1 to move away from each other.

[0049] By cooperating with multiple sets of first diagonal braces 10, second diagonal braces 11, first rotating rods 7 and second rotating rods 8, the travel distance between the two crossbeams 1 can be maximized, thereby increasing the lifting capacity and practicality of the crane.

[0050] By increasing or decreasing the spacing between the crossbeams 1, the spacing of the connecting frames 17 can be increased or decreased, allowing for the optimal lifting angle to lift the container and ensuring the safety of the lifting process.

[0051] As a further embodiment of this utility model, the folding mechanism further includes a lead screw 5 rotatably mounted on the mounting plate 3, and an internally threaded sleeve 6 threadedly connected to the lead screw 5 is mounted on the second rotating rod 8; a second bevel gear 501 is mounted on one end of the lead screw 5; a first rotating shaft 4 is rotatably mounted on the crossbeam 1; and multiple sets of first bevel gears 401 meshing with the second bevel gear 501 are mounted on the first rotating shaft 4.

[0052] In this embodiment, a drive unit is provided on the crossbeam 1, and the output end of the drive unit is fixedly connected to the first rotating shaft 4, thereby driving the first rotating shaft 4 to rotate.

[0053] The rotating first shaft 4 will drive multiple first bevel gears 401 to rotate synchronously, and through meshing, drive multiple second bevel gears 501 to rotate synchronously, thereby driving multiple lead screws 5 to rotate synchronously.

[0054] The rotating lead screw 5, through its threaded engagement with the internal threaded sleeve 6, causes the internal threaded sleeve 6 to move closer to or further away from the mounting plate 3 along the length of the lead screw 5, thereby causing the first rotating rod 7 to move away from or closer to the mounting plate 3, and thus causing the two crossbeams 1 to move closer to or further away from each other.

[0055] Multiple lead screws 5 rotate synchronously, which can drive all the folding mechanisms on the crossbeam 1 to move synchronously, thereby enabling the crossbeam 1 to move horizontally and avoid tilting during the movement of the crossbeam 1, thus increasing the safety of the crane.

[0056] As a further embodiment of this utility model, the hoisting mechanism includes a main motor 14 mounted on the crossbeam 1; a second rotating shaft 15 is mounted on the output end of the main motor 14, and multiple sets of rollers 1501 are mounted on the second rotating shaft 15; a steel wire rope 16 is mounted on the rollers 1501; and the steel wire rope 16 wraps around the rollers 1501; the steel wire rope 16 is fixedly connected to the connecting frame 17.

[0057] In this embodiment, when the main motor 14 is activated, it drives the second rotating shaft 15 to rotate, thereby driving the two rollers 1501 to rotate, thus synchronously winding or releasing the steel wire rope 16 connected to it, thereby driving the connecting frame 17 to rise or fall, so as to drive the container to rise or fall.

[0058] Two rollers 1501 on a crossbeam 1 rotate synchronously, effectively ensuring that the connecting frame 17 rises or falls in a horizontal position. Multiple main motors 14 are controlled by a synchronization system to prevent height differences from occurring during the rising of multiple connecting frames 17, which could cause the container to tilt, leading to lifting failure or even a safety accident.

[0059] As a further embodiment of this utility model, a sliding groove 203 is provided on the column 2, and two sets of fitting blocks 12 are slidably fitted in the sliding groove 203, and the two sets of fitting blocks 12 are symmetrically arranged; a spring 1201 fixedly connected to the column 2 is installed on the fitting block 12; two sets of intersecting third diagonal braces 13 are provided between the columns 2; the ends of the third diagonal braces 13 are rotatably connected to the fitting blocks 12.

[0060] In this embodiment, when the two crossbeams 1 approach each other, they will cause the third diagonal brace 13 to rotate, thereby increasing the vertical distance between the two third diagonal braces 13. This causes the interlocking block 12 to slide in the slide groove 203, compressing the spring 1201. The elastic force of the compressed spring 1201 causes the third diagonal brace 13 to have a tendency to rotate in the opposite direction. This tendency causes the crossbeams 1 to move away from each other, thereby making the connection between the various structures of the folding mechanism tighter and effectively reducing the difficulty of the two crossbeams 1 moving away from each other.

[0061] When the two crossbeams 1 move away from each other, they also cause the third diagonal brace 13 to rotate, thereby reducing the distance between the vertical ends of the two third diagonal braces 13. This causes the interlocking block 12 to slide in the slide groove 203, and the compression of the spring 1201 decreases. The elastic force of the spring 1201 causes the third diagonal brace 13 to have a tendency to rotate. This tendency also makes the connection between the various structures of the folding mechanism tighter, ensuring that the distance between the crossbeams 1 does not easily change when the crane moves, thereby improving the safety of hoisting.

[0062] After use, the folding mechanism drives the crossbeams 1 to move closer together and reach their maximum stroke, thereby reducing the space occupied by the crane and facilitating the rational use of the site.

[0063] As a further embodiment of this utility model, a support platform 201 is installed at the bottom of the column 2.

[0064] In this embodiment, the pier 201 can reduce the probability of the column 2 tilting and improve the safety of the crane. The larger the size of the pier 201, the greater the lifting capacity of the crane.

[0065] As a further embodiment of this utility model, a wheel 202 is rotatably mounted on the support platform 201.

[0066] In this embodiment, the wheels 202 make it easier to move the crane in ports and docks, thus facilitating the movement of containers and improving production capacity.

[0067] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A truss-foldable tire-mounted container gantry crane, comprising multiple sets of crossbeams (1); each crossbeam (1) is equipped with columns (2) at both ends; Its features are, The two adjacent crossbeams (1) are connected by a folding mechanism; when the folding mechanism is activated, it can drive the two crossbeams (1) to move closer or further apart from each other; A lifting mechanism is provided on the crossbeam (1), the lifting mechanism including a connecting frame (17) for connecting with the container; the connecting frame (17) can be raised or lowered horizontally to drive the container to be raised or lowered horizontally.

2. The truss-foldable tire-mounted container gantry crane according to claim 1, characterized in that, The folding mechanism includes multiple sets of first diagonal braces (10) and second diagonal braces (11), the first diagonal braces (10) and the second diagonal braces (11) are rotatably mounted on the first rotating rod (7); and one end of one first diagonal brace (10) and one end of one second diagonal brace (11) are rotatably mounted on the same second rotating rod (8), and the other end of one first diagonal brace (10) and one end of another second diagonal brace (11) are rotatably mounted on another second rotating rod (8); an mounting plate (3) is mounted on the crossbeam (1), and multiple sets of symmetrically arranged sliders (9) are slidably fitted on the mounting plate (3), wherein one side of the slider (9) is fixedly connected to one second rotating rod (8); and the other side of the slider (9) is fixedly connected to another second rotating rod (8).

3. A foldable truss tire-mounted container gantry crane according to claim 2, characterized in that, The folding mechanism further includes a lead screw (5) rotatably mounted on the mounting plate (3), and an internal threaded sleeve (6) threadedly connected to the lead screw (5) is mounted on the second rotating rod (8); a second bevel gear (501) is mounted on one end of the lead screw (5); a first rotating shaft (4) is rotatably mounted on the crossbeam (1); and multiple sets of first bevel gears (401) meshing with the second bevel gear (501) are mounted on the first rotating shaft (4).

4. A foldable truss tire-mounted container gantry crane according to claim 1, characterized in that, The hoisting mechanism includes a main motor (14) mounted on the crossbeam (1); a second rotating shaft (15) is mounted on the output end of the main motor (14), and multiple sets of rollers (1501) are mounted on the second rotating shaft (15); a wire rope (16) is mounted on the roller (1501); and the wire rope (16) wraps around the roller (1501); the wire rope (16) is fixedly connected to the connecting frame (17).

5. A foldable truss tire-mounted container gantry crane according to claim 4, characterized in that, The column (2) is provided with a sliding groove (203), and two sets of fitting blocks (12) are slidably fitted in the sliding groove (203), and the two sets of fitting blocks (12) are symmetrically arranged; a spring (1201) fixedly connected to the column (2) is installed on the fitting block (12); two sets of intersecting third diagonal braces (13) are provided between the columns (2); the end of the third diagonal brace (13) is rotatably connected to the fitting block (12).

6. A foldable truss tire-mounted container gantry crane according to claim 1, characterized in that, The bottom of the column (2) is equipped with a support platform (201).

7. A foldable truss tire-mounted container gantry crane according to claim 6, characterized in that, A wheel (202) is rotatably mounted on the platform (201).

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