A gantry crane for wharf construction
By introducing positioning and buffer components into the gantry crane at the dock, the problem of traditional hydraulic cylinder adjustment being unable to accurately approach the target has been solved, thereby improving the stability and adaptability of the lifting mechanism and reducing equipment wear.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CCCC SECOND HARBOR ENGINEERING CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-05-29
AI Technical Summary
When lifting large items, the traditional hydraulic cylinder adjustment of the existing dock gantry crane cannot achieve precise approach, resulting in a large footprint of the device and affecting the flexibility and adaptability of the lifting limit.
The system employs positioning and buffer components. The buffer component is driven by a screw drive to assist in limiting and positioning the hoisting mechanism. Combined with the buffering performance of the spring, it achieves stable hoisting and precise position adjustment of the hoisting mechanism.
It improves the adaptability and safety of gantry cranes, enhances the stability and precision of hoisting, and reduces the risk of wear and tear on the hoisting mechanism.
Smart Images
Figure CN224298759U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gantry crane technology, specifically a gantry crane for dock construction. Background Technology
[0002] A gantry crane, also known as the structural component of a gantry crane, is a type of equipment with a beam as its main load-bearing structure. It consists of two columns or legs and a crossbeam, resembling a door frame, hence the name "gantry crane". The main function of a gantry crane is to realize the hoisting, handling and lifting of materials. It has a large span and strong load-bearing capacity, and is widely used in warehouses, factory workshops, docks, construction sites and other places.
[0003] An investigation revealed that a utility model patent (publication number: CN218931512U) discloses a collision avoidance device for a dock gantry crane, comprising four sets of supports, a top beam, and a hoisting mechanism. The upper surface of the hoisting mechanism is slidably connected to the lower surface of the top beam. Two sets of fixing plates are welded to the lower surface of the top beam, with the positions of the two sets of fixing plates located on the left and right sides of the hoisting mechanism, respectively. Fixing plates are welded to both sides of the hoisting mechanism. Hydraulic cylinders are welded to adjacent sides of the two sets of fixing plates, and fixing blocks are welded to the output ends of the two sets of hydraulic cylinders. The positions of the two sets of fixing blocks are parallel to the positions of the two sets of fixing plates. By activating the two sets of hydraulic cylinders, the two sets of fixing blocks are moved until the distance between the two sets of fixing blocks and the hoisting mechanism is the same. This movement stops when the two sets of fixing blocks restrict the movement of the hoisting mechanism and the cargo at the lower end of the hoisting mechanism, thereby minimizing the impact of the cargo with the supports when the hoisting mechanism moves the cargo.
[0004] Although the aforementioned patent uses two sets of hydraulic cylinders to push the fixed blocks to achieve auxiliary limiting of the lifting mechanism, the size of the items being lifted in dock use is relatively large, resulting in a large overall size of the gantry frame. Consequently, the minimum extension range of the traditional hydraulic cylinder adjustment is limited, which means that the device cannot accurately approach the sides when performing auxiliary limiting of the lifting mechanism. This further increases the footprint of the device and affects its flexibility and adaptability in lifting and limiting.
[0005] Therefore, this utility model provides a gantry crane for dock construction to solve the above problems. Utility Model Content
[0006] (a) Technical problems to be solved
[0007] This utility model provides a gantry crane for wharf construction, aiming to solve the problems mentioned in the background art.
[0008] (II) Technical Solution
[0009] To achieve the above objectives, this utility model provides the following technical solution: a gantry crane for wharf construction, comprising a gantry frame, the gantry frame comprising a column, a crossbeam fixedly connected to the top of the column, and a limit groove provided in the center of the crossbeam, and a traveling mechanism fixedly connected to the bottom of the column;
[0010] A hoisting mechanism that travels horizontally below a crossbeam and is used for hoisting items;
[0011] The equipment box and positioning components are provided. The equipment box is fixedly connected to the upper surface of the crossbeam, and two sets of positioning components are provided inside the equipment box. The displacement end of the positioning component is connected to a buffer component, and the buffer component is used for auxiliary limiting and abutment positioning of the hoisting mechanism.
[0012] As a preferred technical solution of this application, the buffer assembly includes a positioning plate, which is fixedly connected to the displacement end of the positioning assembly, and a guide shaft slides through the interior of the positioning plate. One end of the guide shaft is fixedly connected to a first abutting plate, and the other side of the first abutting plate is connected to a second abutting plate. The second abutting plate is fixedly connected to the outer wall of the hoisting mechanism.
[0013] As a preferred technical solution of this application, a spring is sleeved on the outside of the guide shaft, and the two ends of the spring abut against the guide shaft and the first abutment plate respectively on the side where they are close to each other. The end of the guide shaft away from the first abutment plate has a T-shaped structure.
[0014] As a preferred technical solution of this application, the positioning components are provided in two sets. Each set of positioning components includes a lead screw, one end of which is fixedly connected to a gear commutator, and the other end of which is fixedly connected to a motor, and the motor is fixedly connected to the upper surface of the equipment box.
[0015] As a preferred technical solution of this application, the lead screw is externally connected to a nut pair, and a guide seat is fixedly connected to the outer wall of the nut pair. A connecting frame is fixedly connected to the bottom of the guide seat by bolts, and the connecting frame is the displacement end of the positioning component. Both ends of the lead screw are rotatably connected to the inside of the equipment box by ball bearings.
[0016] As a preferred technical solution of this application, a rectangular groove is provided on the lower surface of the equipment box corresponding to the limiting groove, and a connecting frame is slidably connected inside the rectangular groove. A slider is embedded inside the lower surface of the guide seat, and a guide rail is slidably connected below the slider. The guide rail is fixedly connected to the inner wall of the equipment box.
[0017] (III) Beneficial Effects
[0018] The beneficial effects of this application are as follows:
[0019] 1. This utility model, through the setting of positioning components, uses two sets of lead screws to drive the buffer components to assist in limiting the lifting mechanism. This not only achieves stable lifting of the lifting mechanism, but also assists in positioning the travel distance on both sides of the lifting mechanism, thereby improving the adaptability and safety of the gantry frame. Furthermore, the lead screw drive and position adjustment are more flexible and precise, enabling better adaptation to the lifting position of the lifting mechanism for stable lifting.
[0020] 2. By setting up a buffer component, this utility model can not only position the two sides of the hoisting mechanism to abut and improve the hoisting stability of the hoisting mechanism, but also adjust the position of the buffer component to achieve auxiliary limiting of the travel position at both ends of the hoisting mechanism, thereby improving the accuracy and flexibility of controlling the travel distance of the hoisting mechanism. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of the present utility model;
[0022] Figure 2 For the present utility model Figure 1 A magnified structural diagram of A in the middle;
[0023] Figure 3 This is a top view schematic diagram of the crossbeam structure of this utility model;
[0024] Figure 4 This is a schematic diagram of the overall structure of the crossbeam of this utility model;
[0025] Figure 5 This is a partial structural diagram of the positioning component of this utility model;
[0026] Figure 6 This is a partial exploded structural diagram of the positioning component and buffer component of this utility model.
[0027] In the picture:
[0028] 1. Gantry frame; 11. Column; 12. Horizontal beam; 13. Traveling mechanism; 14. Limiting groove; 2. Lifting mechanism; 3. Equipment box; 4. Buffer assembly; 41. Positioning plate; 42. Guide shaft; 43. First abutment plate; 44. Second abutment plate; 45. Spring; 5. Positioning assembly; 51. Lead screw; 52. Gear commutator; 53. Motor; 54. Nut pair; 55. Guide seat; 56. Connecting frame; 57. Slider; 58. Guide rail. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] like Figure 1-6 As shown, this utility model provides a gantry crane for dock construction, including a gantry frame 1, the gantry frame 1 including a column 11, a crossbeam 12 fixedly connected to the top of the column 11, and a limit groove 14 provided in the center of the crossbeam 12, and a traveling mechanism 13 fixedly connected to the bottom of the column 11; a hoisting mechanism 2, which travels horizontally below the crossbeam 12 and is used for hoisting items; an equipment box 3 and positioning components 5, the equipment box 3 being fixedly connected to the upper surface of the crossbeam 12, and two sets of positioning components 5 being provided inside the equipment box 3, the displacement end of the positioning components 5... A buffer component 4 is connected, and the buffer component 4 is used for auxiliary limiting and abutment positioning of the hoisting mechanism 2. By driving the positioning component 5 to drive the buffer component 4 to adjust its displacement, the two sides of the hoisting mechanism 2 can be auxiliaryly limited and abutted. Through abutment positioning, the stability of the hoisting mechanism 2 in hoisting the object is improved and the risk of slippage is reduced. At the same time, by adjusting the position of the buffer component 4, the buffer component 4 abuts against the traveling end of the hoisting mechanism 2, which can be adapted to the traveling range of the hoisting mechanism 2 for auxiliary limiting and improve the hoisting accuracy of the device.
[0031] Furthermore, the buffer assembly 4 includes a positioning plate 41, which is fixedly connected to the displacement end of the positioning assembly 5. A guide shaft 42 slides through the interior of the positioning plate 41. A first abutment plate 43 is fixedly connected to one end of the guide shaft 42, and a second abutment plate 44 is connected to the other side of the first abutment plate 43. The second abutment plate 44 is fixedly connected to the outer wall of the hoisting mechanism 2. A spring 45 is sleeved on the outside of the guide shaft 42, and the two ends of the spring 45 abut against the guide shaft 42 and the first abutment plate 43 respectively on the side where they are close to each other. The end of the guide shaft 42 away from the first abutment plate 43 has a T-shaped structure. When the hoisting mechanism 2 moves, it drives the second abutment plate 44 to move synchronously. Through the contact between the second abutment plate 44 and the corresponding first abutment plate 43, the hoisting mechanism 2 can be positioned. At the same time, the first abutment plate 43 is elastically buffered and supported by the spring 45, which plays a certain role in buffering and protection, and avoids excessive wear of the equipment caused by the hard impact when the hoisting mechanism 2 finishes moving.
[0032] Furthermore, the positioning components 5 are provided in two sets. Each set of positioning components 5 includes a lead screw 51. One end of the lead screw 51 is fixedly connected to a gear commutator 52, and the other end of the gear commutator 52 is fixedly connected to a motor 53. The motor 53 is fixedly connected to the upper surface of the equipment box 3. A nut pair 54 is connected to the outside of the lead screw 51, and a guide seat 55 is fixedly connected to the outer wall of the nut pair 54. A connecting frame 56 is fixedly connected to the bottom of the guide seat 55 by bolts. The connecting frame 56 is the displacement end of the positioning component 5. Both ends of the lead screw 51 are rotatably connected to the inside of the equipment box 3 by ball bearings. A rectangular groove is opened on the lower surface of the equipment box 3 corresponding to the limiting groove 14, and the connecting frame 56 is slidably connected inside the rectangular groove. The lower surface of the guide seat 55 is... The device has an embedded slider 57, and a guide rail 58 is slidably connected below the slider 57. The guide rail 58 is fixedly connected to the inner wall of the equipment box 3. When the motor 53 is started, the gear commutator 52 is driven to rotate under the transmission of the gear commutator 52. Furthermore, the horizontal displacement of the nut pair 54 and the guide seat 55 drives the connecting frame 56 to move horizontally, which can drive the position of the buffer component 4 to complete the auxiliary limiting or abutment positioning of the hoisting mechanism 2. The sliding connection between the slider 57 and the guide rail 58 not only assists in guiding and limiting the horizontal displacement of the guide seat 55, but also provides good load support for the guide seat 55. In addition, the guide seat 55 in one set of positioning components 5 is driven to be connected to the lead screw 51 in another set of positioning components 5 in a through-type connection.
[0033] Working principle: First, the positions of the buffer components 4 on both sides are adjusted according to the path travel of the hoisting mechanism 2. Thus, when the hoisting mechanism 2 moves, the contact between the second abutment plate 44 and the first abutment plate 43 can assist in limiting the movement of the hoisting mechanism 2. At the same time, the elastic buffer support of the spring 45 reduces the impact force of the hoisting mechanism 2, providing good buffer protection for the equipment. Furthermore, when the hoisting mechanism 2 is hoisting, the auxiliary positioning of the buffer components 4 on both sides prevents the hoisting mechanism 2 from moving during the hoisting process, further improving the stability of the hoisting mechanism 2.
[0034] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A gantry crane for wharf construction, characterized in that: The gantry (1) includes a column (11), the top of the column (11) is fixedly connected to a crossbeam (12), and the center of the crossbeam (12) is provided with a limit groove (14). The bottom of the column (11) is fixedly connected to a walking mechanism (13). The hoisting mechanism (2) moves horizontally below the crossbeam (12) and is used for hoisting items; The equipment box (3) and the positioning component (5) are fixedly connected to the upper surface of the crossbeam (12), and two sets of positioning components (5) are provided inside the equipment box (3). The displacement end of the positioning component (5) is connected to a buffer component (4), and the buffer component (4) is used for auxiliary limiting and abutment positioning of the hoisting mechanism (2).
2. The gantry crane for wharf construction according to claim 1, characterized in that: The buffer assembly (4) includes a positioning plate (41), which is fixedly connected to the displacement end of the positioning assembly (5). A guide shaft (42) slides through the interior of the positioning plate (41). A first abutment plate (43) is fixedly connected to one end of the guide shaft (42), and a second abutment plate (44) is abutted to the other side of the first abutment plate (43). The second abutment plate (44) is fixedly connected to the outer wall of the hoisting mechanism (2).
3. The gantry crane for wharf construction according to claim 2, characterized in that: A spring (45) is sleeved on the outside of the guide shaft (42), and the two ends of the spring (45) abut against the guide shaft (42) and the first abutment plate (43) respectively on the side that are close to each other. The end of the guide shaft (42) away from the first abutment plate (43) has a T-shaped structure.
4. A gantry crane for wharf construction according to claim 2, characterized in that: The positioning components (5) are provided in two sets. Each set of positioning components (5) includes a lead screw (51). One end of the lead screw (51) is fixedly connected to a gear commutator (52), and the other end of the gear commutator (52) is fixedly connected to a motor (53). The motor (53) is fixedly connected to the upper surface of the equipment box (3).
5. A gantry crane for wharf construction according to claim 4, characterized in that: The lead screw (51) is externally connected to a nut pair (54), and a guide seat (55) is fixedly connected to the outer wall of the nut pair (54). The bottom of the guide seat (55) is fixedly connected to a connecting frame (56) by bolts, and the connecting frame (56) is the displacement end of the positioning component (5). Both ends of the lead screw (51) are rotatably connected to the inside of the equipment box (3) by ball bearings.
6. A gantry crane for wharf construction according to claim 5, characterized in that: The lower surface of the equipment box (3) is provided with a rectangular groove corresponding to the limiting groove (14), and a connecting frame (56) is slidably connected inside the rectangular groove. A slider (57) is embedded inside the lower surface of the guide seat (55), and a guide rail (58) is slidably connected below the slider (57). The guide rail (58) is fixedly connected to the inner wall of the equipment box (3).