A new type of gantry crane
Patent Information
- Application Number
- CN202611021113.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-09
- Publication Date
- 2026-10-09
AI Technical Summary
[0004]本发明的目的在于：为了解决现有的门式起重机货物扶正装置，在间距适配性能与驱动控制方式上仍存在一定的提升空间，多数扶正结构为适配不同的货物与支腿间距，需配置多组独立的驱动执行元件，整体传动系统组成较为繁杂，动力传递的接合与断开通常需配套额外的离合切换机构，传动环节较多，长期高频运行下故障概率相对偏高，且较难跟随起升小车横向移动实时调整扶持间距，扶正约束的持续稳定性有待进一步完善的问题，提供一种新型门式起重机
1.本发明中通过升降件可实现扶持结构与吊钩起升动作的同步竖向联动，无需额外人工调整扶正高度，即可保证扶持点位始终适配货物的起升高度，作用于货物的重心稳定区域，提升扶正效果的同时降低了操作复杂度，双侧对称布置的结构可从货物两侧形成对称约束，有效抑制货物吊运过程中的左右摆动，提升门式起重机室外吊运的抗风稳定性与作业安全性；
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Figure CN122877666A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of lifting equipment technology, specifically a new type of gantry crane. Background Technology
[0002] Gantry cranes are lifting and hoisting equipment widely used in open-air freight yards, ports, bridge construction, and other scenarios. They are an outdoor derivative of bridge cranes. The overall gantry consists of a main beam and two ground-supporting legs. The hoisting trolley can travel laterally along the main beam, and in conjunction with the trolley traveling mechanism, it can realize the longitudinal transfer of goods. It can be adapted to various lifting tools such as hooks, grabs, and electromagnetic chucks to complete the loading, unloading, and transfer of heavy components, containers, and bulk materials. In outdoor windy environments or high-speed hoisting conditions, suspended goods are prone to lateral swaying, affecting alignment accuracy and operational safety. Therefore, there is a continuous demand for optimization of cargo lateral straightening devices in the industry.
[0003] Existing gantry crane cargo straightening devices still have room for improvement in terms of spacing adaptation performance and drive control methods. Most straightening structures require multiple independent drive actuators to adapt to different cargo and outrigger spacings, resulting in a complex overall transmission system. The engagement and disengagement of power transmission usually require an additional clutch switching mechanism. With many transmission links, the probability of failure is relatively high under long-term high-frequency operation. Furthermore, it is difficult to adjust the support spacing in real time with the lateral movement of the hoisting trolley, and the continuous stability of the straightening constraint needs further improvement. Summary of the Invention
[0004] The purpose of this invention is to address the shortcomings of existing gantry crane cargo straightening devices, such as limited room for improvement in spacing adaptation and drive control. Most straightening structures require multiple independent drive actuators to accommodate different cargo and outrigger spacings, resulting in a complex overall transmission system. The engagement and disengagement of power transmission typically necessitate additional clutch switching mechanisms, leading to numerous transmission links and a relatively high probability of failure under long-term high-frequency operation. Furthermore, it is difficult to adjust the support spacing in real-time following the lateral movement of the hoisting trolley, and the continuous stability of the straightening constraint needs further improvement. Therefore, this invention provides a novel gantry crane.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a novel gantry crane, comprising: a gantry and a hoisting trolley, wherein the gantry includes a main beam and two sets of legs fixedly connected to both sides of the main beam, the hoisting trolley is mounted on the main beam, the gantry legs are provided with lifting components, the lifting components are provided with supporting components, and the supporting components are provided with adjusting components; The lifting component includes a lifting groove that extends through the side end of the gantry leg, and the lifting groove is distributed laterally along the main beam of the gantry. The support component includes an installation block fixedly connected to the top of the lifting platform. One end of the installation block passes through the lifting groove and is slidably connected to the lifting groove. A telescopic rod is fixedly connected to one end of the installation block passing through the lifting groove. A moving groove is opened on the inner side of the installation block. A push rod is slidably inserted into the moving groove. One end of the push rod passes through the installation block and extends into the telescopic rod. A first insertion hole and a second insertion hole are opened on the outer circular surface of the push rod. The adjusting component includes a push groove 1 and a push groove 2 that pass through the side end of the mounting block. The upper and lower ends of the mounting block are respectively provided with clearance grooves. A linear actuator 2 is fixedly connected to the side of the mounting block away from the telescopic rod. A synchronization frame is fixedly connected to the movable end of the linear actuator 2. A push block is fixedly connected to the inner side of the synchronization frame. A mounting hole is opened through the side of the push block facing the mounting block. A push rod is slidably inserted into the mounting hole. A spring is fixedly connected to the side of the push rod facing the mounting hole. The other end of the spring is fixedly connected to the inner side of the mounting hole. Each set of push blocks is provided with two sets of mounting holes, and the two sets of mounting holes are at different heights.
[0006] As a further embodiment of the present invention: a linear actuator is fixedly connected to the side end of the gantry leg, a connecting plate is fixedly connected to the movable end of the linear actuator, and a lifting platform is fixedly connected to one end of the connecting plate.
[0007] As a further embodiment of the present invention: two sets of linear actuators are provided, symmetrically distributed on both sides of the lifting groove; two sets of connecting plates are provided, symmetrically distributed on the two sets of linear actuators; the lifting platform is provided between the two sets of connecting plates; and two sets of lifting components are provided, symmetrically distributed on the two sets of legs on the main beam.
[0008] As a further embodiment of the present invention: the mounting block is L-shaped, one end of the push rod is fixedly connected to a set of inner cylinders on the innermost side of the telescopic rod, and the moving groove is composed of a set of n-shaped grooves and a set of straight grooves connected together.
[0009] As a further aspect of the present invention: the push rod is made of TPU high-elastic polyurethane, which has good bending deformation performance. When the push rod moves along the moving groove, it can bend and deform in accordance with the contour of the moving groove. When the push rod is completely removed from the moving groove and the external constraint is removed, it automatically rebounds and returns to the vertical state by relying on its own material elasticity.
[0010] As a further embodiment of the present invention: the first push groove and the second push groove are arranged in parallel, and the first push groove and the second push groove are respectively connected to the n-shaped groove portion in the moving groove. The first push groove and the second push groove are respectively arranged in two groups and symmetrically distributed on both sides of the mounting block. The avoidance groove is arranged in eight groups, symmetrically located at the upper and lower ends of the mounting block. Each group of avoidance grooves is connected to a group of first push groove or second push groove.
[0011] As a further embodiment of the present invention: the synchronization frame is U-shaped with the opening facing the telescopic rod side, the push block is Z-shaped, and two sets of push blocks are provided, symmetrically distributed on the two sets of mounting blocks, and the push rod has rounded corners facing the mounting block.
[0012] As a further embodiment of the present invention: the two sets of push rods on each set of push blocks are aligned with push groove one and push groove two respectively. Under the push of the spring, the two sets of push rods are inserted into push groove one and push groove two respectively and abut against the push rod, and the push rod in push groove one is higher than the push rod in push groove two.
[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the lifting component enables synchronous vertical linkage between the support structure and the lifting action of the hook. No additional manual adjustment of the straightening height is required, which ensures that the support point is always adapted to the lifting height of the goods and acts on the stable area of the center of gravity of the goods. This improves the straightening effect while reducing the complexity of operation. The symmetrical arrangement on both sides of the structure can form symmetrical constraints from both sides of the goods, effectively suppressing the left and right swaying of the goods during the lifting process and improving the wind resistance stability and operational safety of the gantry crane during outdoor lifting. 2. In this invention, the support member enables the telescopic storage and extension of the lateral straightening structure within the limited space on the side of the outrigger. The deformation adaptation characteristics of the elastic push rod complete the turning and resetting, eliminating the need for a complex turning transmission mechanism. The overall structure is simple and highly integrated. The extended telescopic rod can form a surface contact with the side of the cargo to provide support, avoiding rigid impact damage to the cargo surface. After retraction, it is completely stored in the side of the outrigger, without occupying the hoisting passage space under the main beam, and adapting to the lateral straightening needs of cargo of different sizes. 3. In this invention, the adjusting component can achieve multi-stage progressive extension of the straightening structure by relying on a single drive source, automatically adapting to different distances between the cargo and the outriggers. The step-by-step propulsion method can precisely control the extension amount and contact force of the telescopic rod, avoiding excessive extension at one time that could cause cargo compression and deformation. At the same time, the coordination of channel avoidance and spring reset can automatically complete the connection and disengagement of power without the need for an additional clutch structure. The transmission logic is reliable and has a low failure rate. The support distance can be adjusted in real time with the lateral movement of the lifting trolley to maintain a stable straightening constraint effect. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a structural schematic diagram of the lifting component in this invention; Figure 3 This is a schematic diagram of the support component in this invention; Figure 4 This is a schematic diagram of the push rod structure in this invention; Figure 5This is a schematic diagram of the push groove structure in this invention; Figure 6 This is a schematic diagram of the adjusting component in this invention; Figure 7 In this invention Figure 6 A schematic diagram of the structure at point A; Figure 8 In this invention Figure 6 A schematic diagram of the structure at point B.
[0015] In the diagram: 1. Gantry; 2. Lifting trolley; 3. Lifting component; 31. Lifting slot; 32. Linear actuator one; 33. Connecting plate; 34. Lifting platform; 4. Support component; 41. Mounting block; 42. Moving slot; 43. Push rod; 44. Telescopic rod; 45. Socket one; 46. Socket two; 5. Adjusting component; 51. Push slot one; 52. Push slot two; 53. Clearance slot; 54. Linear actuator two; 55. Synchronization frame; 56. Push block; 57. Mounting hole; 58. Push rod; 59. Spring. Detailed Implementation
[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0017] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention 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, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" 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 communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.
[0018] Reference Figure 1In this embodiment of the invention, a novel gantry crane includes: a gantry frame 1 and a hoisting trolley 2. The gantry frame 1 includes a main beam and two sets of legs fixed to both sides of the main beam. The hoisting trolley 2 is mounted on the main beam and travels laterally along the main beam. The hoisting trolley 2 has a built-in winch, wire rope, and hook to realize the lifting and lowering of goods. The legs of the gantry frame 1 are equipped with lifting components 3 that move up and down synchronously with the hook. The lifting components 3 are equipped with support components 4 to straighten the goods on the hook. The support components 4 are equipped with adjustment components 5 that automatically adapt to the distance between the goods and the legs on both sides of the main beam when the goods on the hook move laterally along the main beam with the hoisting trolley 2.
[0019] Reference Figure 2 The lifting component 3 includes a lifting groove 31 that passes through the side end of the leg of the gantry 1. The lifting groove 31 is distributed laterally along the main beam of the gantry 1. A linear actuator 32 is fixedly connected to the side end of the leg of the gantry 1. Two sets of linear actuators 32 are provided and symmetrically distributed on both sides of the lifting groove 31. A connecting plate 33 is fixedly connected to the movable end of the linear actuator 32. A lifting platform 34 is fixedly connected to one end of the connecting plate 33. Two sets of connecting plates 33 are provided and symmetrically distributed on the two sets of linear actuators 32. The lifting platform 34 is located between the two sets of connecting plates 33. Two sets of lifting components 3 are provided and symmetrically distributed on the two sets of legs on the main beam.
[0020] The above scheme is adopted: the movement of the lifting platform 34 is guided and limited by the lifting groove 31, and the lifting platform 34 is driven to rise and fall smoothly vertically by two sets of symmetrically arranged linear actuators 32 through the connecting plate 33. This allows the support component 4 to adjust its vertical height synchronously with the lifting action of the hook, ensuring that the support component 4 is always in the appropriate uprighting height range with the goods. At the same time, the two sets of lifting components 3 are symmetrically distributed on both sides of the outriggers, which can simultaneously perform uprighting actions from both sides of the goods, improving the lateral stability of the goods during the lifting process.
[0021] Reference Figures 3 to 4 The support component 4 includes a mounting block 41 fixedly connected to the top of the lifting platform 34. One end of the mounting block 41 passes through the lifting groove 31 and is slidably connected to the lifting groove 31. The mounting block 41 is L-shaped. A telescopic rod 44 is fixedly connected to one end of the mounting block 41 that passes through the lifting groove 31. A moving groove 42 is opened on the inner side of the mounting block 41. A push rod 43 is slidably inserted into the moving groove 42. One end of the push rod 43 passes through the mounting block 41 and extends into the telescopic rod 44, connecting with the innermost set of... The inner cylinder is fixedly connected. The moving groove 42 is composed of a set of n-shaped grooves and a set of straight grooves connected together. The push rod 43 is made of TPU high-elastic polyurethane. This material has good bending deformation performance. When the push rod 43 moves along the moving groove 42, it can bend and deform in accordance with the contour of the moving groove 42. When the push rod 43 is completely removed from the moving groove 42 and the external constraint is removed, it automatically rebounds and returns to the vertical state by relying on its own material elasticity. The outer circular surface of the push rod 43 is provided with a first insertion hole 45 and a second insertion hole 46.
[0022] The above solution uses the combination path of the n-shaped and straight grooves of the moving groove 42 to constrain the trajectory of the push rod 43. Combined with the high elastic deformation characteristics of the push rod 43 itself, the push rod 43 can adaptively bend and change direction when moving along the groove. After moving out of the groove, it automatically rebounds and resets, thereby pushing the telescopic rod 44 to extend step by step to meet the side of the goods. The telescopic and uprighting action can be achieved without the need for additional steering and reset mechanisms. The overall structure is compact and highly integrated, and the lateral support function of the goods can be completed in a limited installation space.
[0023] Reference Figures 5 to 8 The adjusting component 5 includes a push groove 51 and a push groove 52 that pass through the side of the mounting block 41. The push groove 51 and the push groove 52 are arranged in parallel and are respectively connected to the n-shaped groove portion in the moving groove 42. The upper and lower ends of the mounting block 41 are respectively provided with clearance grooves 53. The push groove 51 and the push groove 52 are respectively arranged in two groups and symmetrically distributed on both sides of the mounting block 41. There are eight groups of clearance grooves 53, symmetrically located at the upper and lower ends of the mounting block 41. Each group of clearance grooves 53 is connected to a group of push grooves 51 or push grooves 52. A linear actuator 54 is fixedly connected to the side of the mounting block 41 away from the telescopic rod 44. A synchronization frame 55 is fixedly connected to the movable end of the linear actuator 54. The synchronization frame 55 is U-shaped and its opening faces the telescopic rod 44. A push block 56 is fixedly connected to the inner side of the synchronization frame 55. The push block 56 is Z-shaped, and there are two sets of push blocks 56, symmetrically distributed on the two sets of mounting blocks 41. The push block 56 has a through mounting hole 57 on the side facing the mounting block 41. A push rod 58 is slidably inserted into the mounting hole 57. A spring 59 is fixedly connected to the side of the push rod 58 facing the mounting hole 57. The other end of the spring 59 is fixedly connected to the inside of the mounting hole 57. Each set of push blocks 56 has two sets of mounting holes 57, and the two sets of mounting holes 57 are at different heights. The push rod 58 has rounded corners facing the mounting block 41. The two sets of push rods 58 on each set of push blocks 56 are aligned with push groove 1 51 and push groove 2 52, respectively. Under the push of the spring 59, the two sets of push rods 58 are inserted into push groove 1 51 and push groove 2 52, respectively, and abut against the push rod 43. The push rod 58 in push groove 1 51 is higher than the push rod 58 in push groove 2 52.
[0024] The above scheme is adopted: the synchronous frame 55 and the push block 56 are driven to reciprocate as a whole by the linear actuator 2 54. With the hierarchical path of push groove 1 51, push groove 2 52 and avoidance groove 53, the push rod 58 driven by the spring 59 is sequentially inserted into the insertion hole 1 45 and insertion hole 2 46 on the push rod 43. The push rod 43 is pushed in two stages with a single power source, automatically adapting to different distances between the goods and the outriggers. The step-by-step extension can accurately control the contact force of the telescopic rod 44. At the same time, the avoidance structure can realize the automatic disengagement and reset of the power end and the execution end. The transmission logic is ingenious and the operation is highly reliable.
[0025] The working principle of this invention is as follows: When the equipment is in the initial standby state, the lifting trolley 2 is stopped at the middle position of the main beam of the gantry 1, the hook is at the lowest standby height, the lifting parts 3 on both sides of the support legs are at the lower limit position of the lifting groove 31, the telescopic rod 44 of the support part 4 is in the fully retracted state, the push rod 43 is stored in the straight groove section of the moving groove 42, the linear driver 54 of the adjusting part 5 is in the retracted state, the synchronization frame 55 and the push block 56 are located at the lower initial position of the mounting block 41, and the two sets of push rods 58 are inserted into the push groove 51 and the push groove 52 respectively under the push force of the spring 59, and the ends are in contact with the outer circle surface of the push rod 43. When the gantry crane performs lifting operations, the hoisting mechanism built into the hoisting trolley 2 first winds up the wire rope, driving the hook and the cargo to rise vertically. During the lifting process, the linear actuators 32 on both outriggers start synchronously, driving the connecting plate 33 to move vertically upward, which in turn drives the lifting platform 34 to slide upward along the lifting groove 31, so that the support component 4 and the adjusting component 5 installed on the lifting platform 34 rise synchronously with the cargo. Throughout the process, the telescopic rod 44 of the support component 4 is kept aligned with the height of the middle of the side of the cargo, ensuring that the subsequent straightening action can be applied to the area near the center of gravity of the cargo. If the lifting height of the cargo continues to increase, the linear actuator 32 continues to output power, driving the lifting platform 34 to rise synchronously. If the cargo descends, the linear actuator 32 reverses the drive, driving the lifting platform 34 to descend synchronously, always maintaining the adaptability of the support height to the cargo. When the hoisting trolley 2 moves laterally along the main beam and pulls the cargo closer to one side outrigger, the corresponding side adjustment component 5 is activated, the linear actuator 2 54 extends, and pushes the synchronization frame 55 and the two sets of Z-shaped push blocks 56 upward as a whole. During the upward movement of the push blocks 56, the higher push rod 58 slides upward along the inner wall of the push groove 1 51, continuously abutting against the outer surface of the push rod 43 until the end of the push rod 58 is aligned with the insertion hole 1 45 on the push rod 43. Under the elastic force of the spring 59, the push rod 5... 8. Insert into the insertion hole 45 to form a plug-in fit. Then, push block 56 continues to move upward. Through the snapping force between push rod 58 and insertion hole 45, push rod 43 moves upward synchronously along moving groove 42. When push rod 43 moves along the n-shaped groove section of moving groove 42, it is constrained by the side wall of the groove and undergoes bending deformation, gradually turning towards telescopic rod 44. At the same time, the end of push rod 43 pushes the inner cylinder of telescopic rod 44 to extend outward, so that telescopic rod 44 gradually extends from the retracted state and moves closer to the side of the goods. When the push block 56 moves the push rod 43 to the upper limit position of the push groove 51, the insertion hole 46 moves with the push rod 43 to the height aligned with the push groove 52. At this time, the push rod 43 has completed the first stage of advancement, and the telescopic rod 44 has completed the first stage of extension. As the linear actuator 54 continues to drive the push block 56 to move upward, the rounded corner structure of the push rod 58 forms a reverse contact with the side wall of the insertion hole 45. The horizontal component of the contact force overcomes the elastic force of the spring 59, causing the push rod 58 to gradually retract into the mounting hole 57. The spring 59 is compressed. When the push block 56 continues to move upward until the push rod 58 is aligned with the clearance groove 53, the push rod 58 comes out of the push groove 51 and moves out of the side area of the mounting block 41 along the clearance groove 53. The spring 59 rebounds and resets, pushing the push rod 58 to restore its original extension length. At this point, the linear actuator 54 reverses direction, driving the synchronous frame 55 and the push block 56 to move downward as a whole. During the downward movement, the rounded corner of the push rod 58 abuts against the edge of the top of the clearance groove 53, and is retracted into the mounting hole 57 again under the action of the inclined plane force. As the push block 56 continues to move downward, the lower-height push rod 58 first aligns with the push groove 52 and is inserted into the push groove 52 under the action of the spring 59, and forms a plug-in engagement with the insertion hole 46 on the push rod 43. Then the push block 56 continues to move downward, and the push rod 43 is driven to continue to move forward along the moving groove 42 through the push rod 58. The push rod 43 continuously pushes the telescopic rod 44 to extend outward until the end of the telescopic rod 44 abuts against the side of the goods, providing lateral support to the goods and counteracting the swaying and tilting during the lifting process. When the hoisting trolley 2 moves towards the middle of the main beam and the distance between the cargo and the outriggers increases, the linear actuator 2 54 reverses its operation, running in the opposite direction according to the above-mentioned action logic. This causes the push rod 43 to gradually retract, and the telescopic rod 44 retracts accordingly, always maintaining a close and supportive state with the side of the cargo. When the cargo is hoisted to the target position and the support needs to be released, the linear actuator 2 54 drives the push block 56 to reset to the initial position. The push rod 43 retracts along the moving groove 42 to the straight groove section, and the telescopic rod 44 retracts completely, disengaging from the side of the cargo. Subsequently, the lifting component 3 drives the support component 4 and the adjusting component 5 back to the standby position, completing one complete uprighting operation cycle.
[0026] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A novel gantry crane, comprising: A gantry (1) and a hoisting trolley (2), wherein the gantry (1) includes a main beam and two sets of legs fixed to both sides of the main beam, and the hoisting trolley (2) is mounted on the main beam. The gantry (1) is characterized in that a lifting component (3) is provided on the legs of the gantry (1), a support component (4) is provided on the lifting component (3), and an adjusting component (5) is provided on the support component (4). The lifting component (3) includes a lifting groove (31) that passes through the side end of the support leg of the gantry (1), and the lifting groove (31) is distributed laterally along the main beam of the gantry (1); The support component (4) includes an installation block (41) fixedly connected to the top of the lifting platform (34). One end of the installation block (41) passes through the lifting groove (31) and is slidably connected to the lifting groove (31). One end of the installation block (41) is fixedly connected to a telescopic rod (44) through the lifting groove (31). A moving groove (42) is provided on the inner side of the installation block (41). A push rod (43) is slidably inserted into the moving groove (42). One end of the push rod (43) passes through the installation block (41) and extends into the telescopic rod (44). The outer circular surface of the push rod (43) is provided with a first insertion hole (45) and a second insertion hole (46). The adjusting component (5) includes a push groove 1 (51) and a push groove 2 (52) that pass through the side of the mounting block (41). The upper and lower ends of the mounting block (41) are respectively provided with clearance grooves (53). A linear actuator 2 (54) is fixedly connected to the side of the mounting block (41) away from the telescopic rod (44). A synchronization frame (55) is fixedly connected to the movable end of the linear actuator 2 (54). A push block (56) is fixedly connected to the inner side of the synchronization frame (55). A mounting hole (57) is provided through the side of the push block (56) facing the mounting block (41). A push rod (58) is slidably inserted into the mounting hole (57). A spring (59) is fixedly connected to the side of the push rod (58) facing the mounting hole (57). The other end of the spring (59) is fixedly connected to the inner side of the mounting hole (57). Each set of push blocks (56) is provided with two sets of mounting holes (57), and the two sets of mounting holes (57) are at different heights.
2. The novel gantry crane according to claim 1, characterized in that, The gantry (1) has a linear actuator (32) fixedly connected to the side of the outrigger, and a connecting plate (33) fixedly connected to the movable end of the linear actuator (32), and a lifting platform (34) fixedly connected to one end of the connecting plate (33).
3. A novel gantry crane according to claim 2, characterized in that, Two sets of linear actuators (32) are provided, symmetrically distributed on both sides of the lifting groove (31). Two sets of connecting plates (33) are provided, symmetrically distributed on the two sets of linear actuators (32). The lifting platform (34) is provided between the two sets of connecting plates (33). Two sets of lifting components (3) are provided, symmetrically distributed on the two sets of legs on the main beam.
4. A novel gantry crane according to claim 3, characterized in that, The mounting block (41) is L-shaped. One end of the push rod (43) is fixedly connected to a set of inner cylinders on the innermost side of the telescopic rod (44). The moving groove (42) is composed of a set of n-shaped grooves and a set of straight grooves connected together.
5. A novel gantry crane according to claim 4, characterized in that, The push rod (43) is made of TPU high-elastic polyurethane. This material has good bending deformation performance. When the push rod (43) moves along the moving groove (42), it can bend and deform in line with the contour of the moving groove (42). When the push rod (43) is completely moved out of the moving groove (42) and the external constraint is removed, it automatically rebounds and returns to the vertical state by relying on its own material elasticity.
6. A novel gantry crane according to claim 5, characterized in that, The push groove 1 (51) and push groove 2 (52) are arranged in parallel, and push groove 1 (51) and push groove 2 (52) are respectively connected to the n-shaped groove part in the moving groove (42). The push groove 1 (51) and push groove 2 (52) are respectively arranged in two groups and symmetrically distributed on both sides of the mounting block (41). There are eight groups of avoidance grooves (53), symmetrically located at the upper and lower ends of the mounting block (41). Each group of avoidance grooves (53) is connected to a group of push groove 1 (51) or push groove 2 (52).
7. A novel gantry crane according to claim 6, characterized in that, The synchronization frame (55) is U-shaped and the opening faces the telescopic rod (44). The push block (56) is Z-shaped. There are two sets of push blocks (56) symmetrically distributed on the two sets of mounting blocks (41). The push rod (58) has rounded corners facing the mounting block (41).
8. A novel gantry crane according to claim 7, characterized in that, The two sets of push rods (58) on each push block (56) are aligned with push groove one (51) and push groove two (52) respectively. Under the push of the spring (59), the two sets of push rods (58) are inserted into push groove one (51) and push groove two (52) respectively, and abut against push rod (43). The push rod (58) in push groove one (51) is higher than the push rod (58) in push groove two (52).