Gantry crane and cargo handling system

Abstract

The utility model discloses a door type hoisting device and freight loading and unloading system, including setting in first track and along first track's operation mechanism, setting in operation mechanism's support leg subassembly, setting in the upper end of support leg subassembly's girder and setting in girder and along girder length direction removal carry out the suspension mechanism of spare and part hoist, support leg subassembly includes the upper support leg of constitution presents L type and with the lower support leg of first end connection of upper support leg, lower support leg is used for setting in operation mechanism, and the first end of upper support leg and lower support leg set up first connecting structure rotary connection, and upper support leg and / or lower support leg are provided with first limiting mechanism for limiting the rotation of upper support leg relative to lower support leg, one side of girder with the setting second connecting structure of upper support leg, and girder is based on the rotation of second connecting structure relative to upper support leg, and upper support leg and / or girder set up second limiting mechanism for limiting the rotation of girder relative to upper support leg, and hoisting structure is set up on girder.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, and in particular, to a gantry crane. Furthermore, this utility model also relates to a cargo loading and unloading system including the aforementioned gantry crane. Background Technology

[0002] Gantry cranes are mainly used for loading and unloading of goods and bulk materials in outdoor freight yards and material yards.

[0003] In existing gantry cranes, the main beam needs to be hoisted to the top of the legs after the legs are assembled for positioning, alignment, and assembly. This process is inefficient and difficult to operate. Furthermore, the legs of gantry cranes are vertical structures, with the main beam positioned above them. This means that slender components such as rails can only be hoisted along the direction of the gantry crane's movement. Hoisting them horizontally would interfere with the legs. Utility Model Content

[0004] This utility model provides a gantry crane device and cargo loading and unloading system to solve the technical problems in the prior art of gantry cranes, such as the difficulty of aligning and fixing the main beam after hoisting and assembling, and the small operating space and easy interference when hoisting slender components.

[0005] According to one aspect of the present invention, a gantry crane is provided, comprising a running mechanism disposed on a first track and for traveling along the first track, a leg assembly disposed on the running mechanism, a main beam disposed on the upper end of the leg assembly, and a suspension mechanism disposed on the main beam and for moving along the length direction of the main beam and for hoisting components; the leg assembly includes an upper leg constructed in an L-shape and a lower leg for connecting to a first end of the upper leg, the lower leg being disposed on the running mechanism, and the first end of the upper leg and the lower leg being connected to the running mechanism. The lower support leg is provided with a first connecting structure, and the upper support leg is rotatably connected to the lower support leg based on the first connecting structure. The upper support leg and / or the lower support leg are provided with a first limiting mechanism for restricting the rotation of the upper support leg relative to the lower support leg. One side of the main beam is provided with a second connecting structure to the upper support leg, and the main beam rotates relative to the upper support leg based on the second connecting structure. The upper support leg and / or the main beam are provided with a second limiting mechanism for restricting the rotation of the main beam relative to the upper support leg. A hoisting structure is provided on the main beam.

[0006] As a further improvement to the above technical solution, the first connecting structure includes a first hinge seat disposed on the side edge of the first end of the upper support leg facing the main beam, a second hinge seat disposed on the lower support leg, and a first pin for passing through the first hinge seat and the second hinge seat; the second connecting structure includes a third hinge seat disposed on the upper edge of the second end of the upper support leg, a fourth hinge seat disposed on the upper edge of one side of the main beam, and a second pin for passing through the third hinge seat and the fourth hinge seat.

[0007] As a further improvement to the above technical solution, the first limiting mechanism includes a first fixed seat disposed on the side of the upper support leg away from the main beam, a second fixed seat disposed on the lower support leg, and a third pin for passing through the first fixed seat and the second fixed seat; the second limiting mechanism includes a third fixed seat disposed on the lower edge of the second end of the upper support leg, a fourth fixed seat disposed on one side of the main beam below the fourth hinge seat, and a fourth pin for passing through the third fixed seat and the fourth fixed seat.

[0008] As a further improvement to the above technical solution, the bottom ends of the lower support leg are respectively provided with mounting steps for installing the operating mechanism.

[0009] As a further improvement to the above technical solution, the operating mechanism includes an active wheel assembly for mounting a step at the first end of the lower support leg and a passive wheel assembly for mounting a step at the second end of the lower support leg.

[0010] As a further improvement to the above technical solution, the active wheel assembly includes a first housing that matches the mounting step, an active wheel disposed in the first housing and extending from the bottom of the first housing, and a drive device disposed in the first housing and drivenly connected to the active wheel; the passive wheel assembly includes a second housing that matches the mounting step, and a passive wheel disposed in the second housing and extending from the bottom of the second housing.

[0011] As a further improvement to the above technical solution, the top and side walls of the first box and the second box are respectively provided with mounting structures, and the surface of the mounting step is provided with mounting grooves for embedding the mounting structures.

[0012] As a further improvement to the above technical solution, the main beam is connected to at least two of the aforementioned leg assemblies.

[0013] As a further improvement to the above technical solution, a second track is provided along the lower edge of the main beam for cooperation with the suspension mechanism.

[0014] According to another aspect of the present invention, a cargo loading and unloading system is also provided, which includes the above-mentioned gantry crane device.

[0015] This utility model has the following beneficial effects:

[0016] The outrigger assembly of this gantry crane is divided into an L-shaped upper outrigger and a lower outrigger connected to one end of the upper outrigger. The main beam is installed at the other end of the upper outrigger, making the overall structure of the gantry crane approximately C-shaped. This ensures that the center of gravity of the main beam is centered while significantly increasing the lifting space, making it easier to lift slender components, and improving site utilization, operating range, and versatility. Furthermore, the separate upper and lower outriggers reduce the space occupied by the device and facilitate transportation. A first and second connecting structure allows the upper and lower outriggers to be rotatably connected, and the main beam to be rotatably connected to the upper outrigger. During assembly, the main beam can be placed on the ground or above... The lower outrigger can be placed parallel to the ground. The main beam is rotatably connected to the upper outrigger, and the upper outrigger is rotatably connected to the lower outrigger. In the connected state, the main beam is hoisted based on the hoisting structure of the main beam, which drives the upper outrigger to swing to be perpendicular to the lower outrigger based on the first connection structure. The rotation is restricted by the first limit mechanism and the second limit mechanism to lock the lower outrigger and the upper outrigger, as well as the upper outrigger and the main beam. Based on the structure of this gantry crane, the main beam of the device can be assembled, hoisted and lifted on the ground and then fixed as a whole to complete the assembly. There is no need to pull the guy ropes or fix the main beam after hoisting. The operation is more convenient, safe and reliable.

[0017] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 These are front and side views of a preferred embodiment of this utility model;

[0020] Figure 2 This is a side view of a preferred embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the main beam of a preferred embodiment of the present invention;

[0022] Figure 4 This is a front view of the upper support leg of a preferred embodiment of the present invention;

[0023] Figure 5 This is a side view of the upper support leg of a preferred embodiment of the present invention;

[0024] Figure 6 This is a front view of the lower support leg of a preferred embodiment of the present invention;

[0025] Figure 7 This is a side view of the lower support leg of a preferred embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the ground assembly of a preferred embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the main beam hoisting and assembly completed according to a preferred embodiment of this utility model;

[0028] Figure 10 This is a schematic diagram of the assembly of the active wheel assembly according to a preferred embodiment of the present invention;

[0029] Figure 11 This is a side view of the active wheel assembly according to a preferred embodiment of the present invention;

[0030] Figure 12 This is a schematic diagram of the assembly of the passive wheel assembly according to a preferred embodiment of the present invention.

[0031] Legend:

[0032] 100. Main beam; 101. Fourth hinge seat; 102. Fourth fixed seat; 200. Outrigger assembly; 201. Upper outrigger; 202. Lower outrigger; 203. Third hinge seat; 204. Third fixed seat; 205. First hinge seat; 206. First fixed seat; 207. Second hinge seat; 208. Second fixed seat; 209. Mounting block; 210. Bolt; 300. Suspension mechanism; 400. Driven wheel assembly; 401. First housing; 402. Drive unit; 403. Driven wheel; 500. Passive wheel assembly; 501. Second housing; 502. Passive wheel; 503. Mounting structure. Detailed Implementation

[0033] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0034] Figure 1 These are front and side views of a preferred embodiment of this utility model; Figure 2 This is a side view of a preferred embodiment of the present invention; Figure 3 This is a schematic diagram of the main beam of a preferred embodiment of the present invention; Figure 4 This is a front view of the upper support leg of a preferred embodiment of the present invention; Figure 5 This is a side view of the upper support leg of a preferred embodiment of the present invention; Figure 6 This is a front view of the lower support leg of a preferred embodiment of the present invention; Figure 7 This is a side view of the lower support leg of a preferred embodiment of the present invention; Figure 8 This is a schematic diagram of the ground assembly of a preferred embodiment of the present invention; Figure 9 This is a schematic diagram of the main beam hoisting and assembly completed according to a preferred embodiment of this utility model; Figure 10 This is a schematic diagram of the assembly of the active wheel assembly according to a preferred embodiment of the present invention; Figure 11 This is a side view of the active wheel assembly according to a preferred embodiment of the present invention; Figure 12 This is a schematic diagram of the assembly of the passive wheel assembly according to a preferred embodiment of the present invention.

[0035] like Figures 1 to 12 As shown, the gantry crane of this embodiment includes a running mechanism disposed on a first track and used for traveling along the first track, a support leg assembly 200 disposed on the running mechanism, a main beam 100 disposed on the upper end of the support leg assembly 200, and a suspension mechanism 300 disposed on the main beam 100 and used for moving along the length direction of the main beam 100 and for hoisting parts; the support leg assembly 200 includes an upper support leg 201 with an L-shaped structure and a lower support leg 202 for connecting to the first end of the upper support leg 201. The lower support leg 202 is disposed on the running mechanism, and the first end of the upper support leg 201 and the lower support leg 202 are connected to the running mechanism. The leg 202 is provided with a first connecting structure, and the upper support leg 201 is rotatably connected to the lower support leg 202 based on the first connecting structure. The upper support leg 201 and / or the lower support leg 202 are provided with a first limiting mechanism for restricting the rotation of the upper support leg 201 relative to the lower support leg 202. One side of the main beam 100 is provided with a second connecting structure to the upper support leg 201. The main beam 100 rotates relative to the upper support leg 201 based on the second connecting structure. The upper support leg 201 and / or the main beam 100 are provided with a second limiting mechanism for restricting the rotation of the main beam 100 relative to the upper support leg 201. A hoisting structure is provided on the main beam 100.

[0036] The suspension mechanism 300 is implemented with reference to the suspension trolley of the existing gantry crane device, and is used for cargo hoisting, which will not be described in detail; the outrigger assembly 200 moves on the first track based on the running mechanism.

[0037] It should be understood that the main beam 100 is connected to at least two outrigger assemblies 200, that is, at least two first tracks are provided; the outrigger assemblies 200 are connected to the end of the main beam 100 or near the end of the main beam 100, so that the middle part has a large hoisting space; on the other hand, the lower edge of the main beam 100 is provided with a second track for cooperating with the suspension mechanism 300. The direction of the second track after the device is assembled is perpendicular to the direction of the first track, so as to realize multi-directional transfer of hoisted items.

[0038] Understandably, the outrigger assembly 200 of this gantry crane is divided into an L-shaped upper outrigger 201 and a lower outrigger 202 connected to one end of the upper outrigger 201. The main beam 100 is installed at the other end of the upper outrigger 201, making the overall structure of the gantry crane approximately C-shaped. This ensures that the center of gravity of the main beam 100 is centered while significantly increasing the lifting space, making it easier to lift slender components, and improving site utilization, operating range, and versatility. On the other hand, after the outrigger assembly 200 is divided into an upper outrigger 201 and a lower outrigger 202, the device occupies less space and is easier to transport. Furthermore, the first and second connecting structures allow the upper outrigger 201 and the lower outrigger 202 to be rotatably connected, and the main beam 100 to be rotatably connected to the upper outrigger 201. During assembly, the main beam 100 can be placed on the ground. The upper support leg 201 can be placed parallel to the lower support leg 202, i.e., parallel to the ground. After the main beam 100 is rotatably connected to the upper support leg 201 and the upper support leg 201 is rotatably connected to the lower support leg 202, the main beam 100 can be hoisted up based on the hoisting structure of the main beam 100 in the connected state, causing the upper support leg 201 to swing to be perpendicular to the lower support leg 202 based on the first connection structure. The rotation is restricted by the first limit mechanism and the second limit mechanism to lock the lower support leg 202 and the upper support leg 201, as well as the upper support leg 201 and the main beam 100. Based on the structure of this gantry crane, the main beam 100 can be assembled, hoisted and lifted on the ground and then fixed as a whole to complete the assembly. There is no need to pull the guy ropes or fix the main beam 100 after hoisting. The operation is more convenient, safe and reliable.

[0039] In some embodiments, the first connecting structure includes a first hinge seat 205 disposed on the side edge of the first end of the upper support leg 201 facing the main beam 100, a second hinge seat 207 disposed on the lower support leg 202, and a first pin for passing through the first hinge seat 205 and the second hinge seat 207; the second connecting structure includes a third hinge seat 203 disposed on the upper edge of the second end of the upper support leg 201, a fourth hinge seat 101 disposed on the upper edge of one side of the main beam 100, and a first pin for passing through the third hinge seat 203 and the fourth hinge seat 101. Two pins; it can be understood that the first and second connecting structures are the same, both achieving a rotatable connection by setting hinge seats at both connecting ends and passing pins through them; wherein, the first hinge seat 205 is set on the side edge of the first end of the upper support leg 201 facing the main beam 100, and the second hinge seat 207 is set on the upper surface of the lower support leg 202. After the first connecting structure is assembled, the upper support leg 201 can only swing towards the direction of mounting the main beam 100 based on the first connecting structure until it contacts the lower support leg 202 or the ground, and rotate away from the main beam 100. The upper support leg 201 is engaged with the lower support leg 202 on the other side of the first end to restrict rotation. Assembly is completed by locking via the first limiting mechanism, making operation convenient and the structure simplified. The third hinge seat 203 is located on the upper edge of the second end of the upper support leg 201, and the fourth hinge seat 101 is located on the upper edge of one side of the main beam 100. The main beam 100 can be connected to the upper support leg 201 and the lower support leg 202 via the first connecting structure and to the main beam 100 via the second connecting structure when the upper support leg 201 is tilted and the main beam 100 is placed on the ground. 00, the hoisting equipment can be connected to the hoisting structure of the main beam 100 to lift the main beam 100, causing the upper support leg 201 to swing based on the first connecting structure, and the upper support leg 201 and the main beam 100 to swing relative to each other based on the second connecting structure. After being lifted into place, the first end of the upper support leg 201, away from the side edge of the main beam 100, abuts against the upper surface of the lower support leg 202, and the lower edge of the second end of the upper support leg 201 abuts against the main beam 100. The assembly can be completed by locking and restricting the rotation through the first limiting mechanism and the second limiting mechanism respectively. It is fixed and stable, easy to operate, and has a small number of parts.

[0040] In some embodiments, the first limiting mechanism includes a first fixing seat 206 disposed at the first end of the upper support leg 201 on the side opposite to the main beam 100, a second fixing seat 208 disposed on the lower support leg 202, and a third pin for passing through the first fixing seat 206 and the second fixing seat 208; the second limiting mechanism includes a third fixing seat 204 disposed at the lower edge of the second end of the upper support leg 201, a fourth fixing seat 102 disposed on one side of the main beam 100 below the fourth hinge seat 101, and a fourth pin for passing through the third fixing seat 204 and the fourth fixing seat 102; it can be understood that the first fixing seat 206, the second... Fixed seat 208, third fixed seat 204, and fourth fixed seat 102 are all hinged seats. After the first fixed seat 206 and second fixed seat 208 are aligned, they can be fixed by inserting a pin. When the pins of the first hinged seat 205 and second hinged seat 207 are disassembled, the upper support leg 201 can rotate relative to the lower support leg 202 based on the first limiting mechanism. Similarly, after the third fixed seat 204 and fourth fixed seat 102 are aligned, they can be fixed by inserting a pin. When the pins of the third hinged seat 203 and fourth hinged seat 101 are disassembled, the main beam 100 can rotate relative to the upper support leg 201 based on the second limiting mechanism. The overall structure of the device is more streamlined and has fewer parts.

[0041] In some embodiments, the bottom ends of the lower support leg 202 are respectively provided with mounting steps 211 for mounting the running mechanism. The mounting steps 211 increase the contact area and contact surface direction of the assembled running mechanism, and can bear force in both the horizontal and vertical directions, making the structure more stable. On the other hand, mounting the running mechanism on the mounting steps 211 makes the structure more integrated, simple and beautiful.

[0042] In some embodiments, the operating mechanism includes an active wheel assembly 400 for mounting a mounting step 211 at the first end of the lower support leg 202 and a passive wheel assembly 500 for mounting a mounting step 211 at the second end of the lower support leg 202. The active wheel assembly 400 has a drive device 402 that drives itself to run along a first track, thereby moving the support leg assembly 200. The passive wheel assembly 500 provides auxiliary support and passively rolls on the first track. Specifically, the active wheel assembly 400 includes a first housing 40 that matches the mounting step 211. 1. An active wheel 403 is disposed within the first housing 401 and extends from the bottom of the first housing 401, and a drive device 402 is disposed within the first housing 401 and drivenly connected to the active wheel 403; the passive wheel assembly 500 includes a second housing 501 that matches the mounting step 211, and a passive wheel 502 disposed within the second housing 501 and extends from the bottom of the second housing 501; both the active wheel assembly 400 and the passive wheel assembly 500 are modular structures, and can be directly installed into the mounting step 211 to complete the assembly, which is convenient to operate;

[0043] Furthermore, the top and side walls of the first housing 401 and the second housing 501 are respectively provided with mounting structures 503. The surface of the mounting step 211 is provided with mounting grooves for embedding the mounting structures 503. It should be noted that the bottom ends of the lower support leg 202 are separately provided with mounting blocks 209 at the mounting step 211. One mounting groove is provided on the mounting block 209, and the other mounting groove is provided on the other surface of the mounting step 211. The mounting block 209 is connected to the body of the lower support leg 202 by bolts 210. During assembly, the mounting structure 503 on the top of the active wheel assembly 400 / passive wheel assembly 500 is embedded into the mounting groove of the mounting block 209, and the mounting structure 503 on the side wall faces the other mounting groove of the mounting step 211. Locking the mounting block 209 makes the mounting structure 503 on the side wall of the wheel assembly embedded into the mounting groove, which is convenient for assembly and disassembly. The mounting structure 503 can be a boss structure such as a cylindrical pin; in some embodiments, the mounting structure 503 can also be a bolt 210.

[0044] On the other hand, a preferred embodiment of the present invention also provides a cargo loading and unloading system that utilizes the aforementioned gantry crane device.

[0045] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A gantry crane, characterized in that, The system includes a running mechanism mounted on a first track and used for traveling along the first track; a leg assembly (200) mounted on the running mechanism; a main beam (100) mounted on the upper end of the leg assembly (200); and a suspension mechanism (300) mounted on the main beam (100) and used for moving along the length of the main beam (100) and for hoisting components. The leg assembly (200) includes an upper leg (201) with an L-shaped structure and a lower leg (202) for connecting to the first end of the upper leg (201). The lower leg (202) is mounted on the running mechanism. The first end of the upper leg (201) and the lower leg (202) are provided with a first connecting structure. The upper support leg (201) is rotatably connected to the lower support leg (202) based on the first connecting structure. The upper support leg (201) and / or the lower support leg (202) are provided with a first limiting mechanism for restricting the rotation of the upper support leg (201) relative to the lower support leg (202). A second connecting structure is provided between one side of the main beam (100) and the upper support leg (201). The main beam (100) rotates relative to the upper support leg (201) based on the second connecting structure. The upper support leg (201) and / or the main beam (100) are provided with a second limiting mechanism for restricting the rotation of the main beam (100) relative to the upper support leg (201). A hoisting structure is provided on the main beam (100).

2. The gantry crane device according to claim 1, characterized in that, The first connecting structure includes a first hinge seat (205) disposed on the side edge of the upper support leg (201) facing the main beam (100), a second hinge seat (207) disposed on the lower support leg (202), and a first pin for passing through the first hinge seat (205) and the second hinge seat (207); the second connecting structure includes a third hinge seat (203) disposed on the upper edge of the second end of the upper support leg (201), a fourth hinge seat (101) disposed on the upper edge of one side of the main beam (100), and a second pin for passing through the third hinge seat (203) and the fourth hinge seat (101).

3. The gantry crane device according to claim 2, characterized in that, The first limiting mechanism includes a first fixed seat (206) disposed at the first end of the upper support leg (201) on the side opposite to the main beam (100), a second fixed seat (208) disposed on the lower support leg (202), and a third pin for passing through the first fixed seat (206) and the second fixed seat (208); the second limiting mechanism includes a third fixed seat (204) disposed at the lower edge of the second end of the upper support leg (201), a fourth fixed seat (102) disposed on one side of the main beam (100) below the fourth hinge seat (101), and a fourth pin for passing through the third fixed seat (204) and the fourth fixed seat (102).

4. The gantry crane according to claim 1, characterized in that, The lower support leg (202) has mounting steps (211) at both ends of its bottom for mounting the operating mechanism.

5. The gantry crane according to claim 4, characterized in that, The operating mechanism includes an active wheel assembly (400) for mounting a mounting step (211) at the first end of the lower support leg (202) and a passive wheel assembly (500) for mounting a mounting step (211) at the second end of the lower support leg (202).

6. The gantry crane according to claim 5, characterized in that, The active wheel assembly (400) includes a first housing (401) that matches the mounting step (211), an active wheel (403) disposed within the first housing (401) and extending from the bottom of the first housing (401), and a drive device (402) disposed within the first housing (401) and drivenly connected to the active wheel (403); the passive wheel assembly (500) includes a second housing (501) that matches the mounting step (211), and a passive wheel (502) disposed within the second housing (501) and extending from the bottom of the second housing (501).

7. The gantry crane according to claim 6, characterized in that, The top and side walls of the first box (401) and the second box (501) are respectively provided with mounting structures (503), and the surface of the mounting step (211) is provided with mounting grooves for embedding the mounting structures (503).

8. The gantry crane according to any one of claims 1-7, characterized in that, The main beam (100) is connected to at least two of the leg assemblies (200).

9. The gantry crane according to any one of claims 1-7, characterized in that, The lower edge of the main beam (100) is provided with a second track for cooperating with the suspension mechanism (300).

10. A cargo loading and unloading system, characterized in that, The application has the gantry crane device as described in any one of claims 1-9.

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