Port container hoisting equipment with mechanical anti-deviation limiting mechanism

Abstract

The application discloses a port container hoisting equipment with a mechanical anti-deviation limiting mechanism, and relates to the technical field of port hoisting equipment. The port container hoisting equipment comprises a cross beam and a hoisting trolley moving along the cross beam, the hoisting trolley is connected with a container lifting appliance through a steel wire rope, and a pair of mounting seats are fixed to the two sides of the hoisting trolley. The top of each mounting seat is fixedly connected with a limiting frame in sliding contact with the cross beam. An elastic guide element is embedded on the limiting frame. A sliding groove matched with the elastic guide element is horizontally formed on the outer side of the cross beam. A plurality of deviation rectifying elements matched with the elastic guide element are installed in the sliding groove. The lifting anti-deviation mechanism is in contact with the steel wire rope. The application converts the oblique deviation of the steel wire rope into the vertical displacement of the lifting anti-deviation mechanism, and then converts the deviation force into the reverse progressive resistance through the mechanical cooperation of the elastic guide element and the multi-stage deviation rectifying elements in the sliding groove, so that the mechanical self-adaptive anti-deviation control is realized, that is, the greater the deviation is, the greater the resistance is, and then the deviation is gradually corrected.

Description

Technical Field

[0001] This invention relates to the field of port lifting equipment technology, specifically to a port container lifting device with a mechanical anti-deviation limiting mechanism. Background Technology

[0002] Port container cranes are the core equipment for modern port loading and unloading operations. During the lifting and transport of containers, the crane trolley moves back and forth along the main beam, suspending the container spreader and container via wire ropes.

[0003] However, in actual operation, the acceleration and deceleration inertia generated when the crane trolley starts, brakes, or changes speed, as well as the continuous or intermittent strong wind loads encountered in the open-air port environment, can cause the wire rope to easily sway obliquely. The severe swaying of the wire rope not only makes it difficult to align containers, but also causes uneven force on both sides of the crane trolley, resulting in abnormal friction between the wheels and the guide rails, accelerating equipment wear. In the existing technology, the correction device for trolley deviation and the anti-deviation device for wire rope deviation are usually independent of each other. For example, only a fixed mechanical stop is set on the crossbeam to limit the trolley travel. Although this method is simple, it is a hard collision type of limit, with a large impact load, which can easily damage the equipment. Alternatively, the sway can be detected by sensors and the control system can adjust the trolley motor, which has the problems of response lag and reliability affected by the stability of the electrical system. Summary of the Invention

[0004] The purpose of this invention is to provide a port container lifting device with a mechanical anti-deviation limiting mechanism to solve the technical problems in the prior art, such as the lifting trolley being prone to deviation, the wire rope being prone to swaying, and the existing correction methods having large impact and poor coordination.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A port container lifting device with a mechanical anti-deviation limiting mechanism includes a crossbeam and a lifting trolley that moves along the crossbeam. The lifting trolley is connected to a container spreader via a wire rope. It also includes a pair of mounting seats, fixed to both sides of the lifting trolley. A limiting frame that slides in contact with the crossbeam is fixedly connected to the top of each mounting seat. An elastic guide is embedded in the limiting frame. A horizontal groove adapted to the elastic guide is formed on the outer side of the crossbeam. Several correction components that cooperate with the elastic guide are installed in the groove. A lifting anti-deviation mechanism is inserted into the mounting seat. The bottom of the lifting anti-deviation mechanism contacts the wire rope, and the top of the lifting anti-deviation mechanism abuts against the elastic guide. When the wire rope deviates obliquely, the lifting anti-deviation mechanism rises and presses the elastic guide into the groove. During the movement of the lifting trolley, the elastic guide sequentially abuts against each correction component, generating a counterforce that drives the lifting anti-deviation mechanism to descend in stages, limiting further deviation of the wire rope in a multi-stage, gradual manner.

[0006] Preferably, guide rails are fixedly connected to both sides of the inner wall of the crossbeam, and movable wheels are installed on both sides of the lifting trolley, with annular grooves adapted to the guide rails on the movable wheels.

[0007] Preferably, the lifting anti-deviation mechanism includes an abutment frame that moves through the mounting base, guide wheels that roll in contact with the wire rope are symmetrically installed on one side of the bottom of the abutment frame, and a wedge-shaped push rod that tilts against the elastic guide member is fixedly connected to the top of the abutment frame.

[0008] Preferably, both sides of the bottom of the mounting base are fixedly connected with anti-detachment rods that penetrate the bottom of the abutment frame, and the anti-detachment rods are covered with buffer springs, with the two ends of the buffer springs abutting against the mounting base and the abutment frame respectively.

[0009] Preferably, the elastic guide includes a guide slider movably embedded in the limiting frame, one side of the guide slider is provided with an abutting inclined surface that abuts against the wedge-shaped push rod, a pair of connecting frames are fixedly connected to the outer wall of the limiting frame, and a return spring is installed between the guide slider and the connecting frame.

[0010] Preferably, the correction component includes a trapezoidal top block installed on the inner wall of the slide groove, one side of the trapezoidal top block is fixedly connected to an installation plate embedded in the slide groove, and the side of the guide slider that enters the slide groove abuts against the trapezoidal top block.

[0011] Preferably, the distance from each trapezoidal top block to the groove opening gradually decreases, and a transition section is formed between adjacent trapezoidal top blocks to facilitate the smooth sliding of the guide slider. When the crane trolley moves, the counter-pushing force of the corresponding trapezoidal top block on the guide slider gradually increases.

[0012] Preferably, one side of the limiting frame slides in contact with the outer wall of the crossbeam, and the other side is symmetrically equipped with a rack. A connecting shaft is horizontally installed on the abutment frame, and both ends of the connecting shaft are fixedly connected with gears that mesh with the rack.

[0013] Preferably, the connecting shaft is symmetrically fitted with elastic abutment members and friction rings that abut against the elastic abutment members, and the limiting frame is provided with guide grooves that cooperate with the elastic abutment members. When the connecting shaft moves upward, the elastic abutment members move towards the friction rings under the action of the guide grooves.

[0014] Preferably, the guide wheel has a positioning groove adapted to the wire rope, and the positioning groove has an anti-slip mesh pattern.

[0015] In the above technical solution, the oblique sway of the wire rope is converted into the vertical displacement of the lifting and anti-deviation mechanism. Then, through the mechanical cooperation of the elastic guide and the multi-stage correction components in the chute, the sway force is converted into a progressive resistance in the opposite direction. This achieves a mechanically adaptive anti-deviation control where the greater the sway, the greater the resistance, followed by gradual return to the correct position. When the wire rope sways obliquely, the lifting and anti-deviation mechanism is pushed upwards by the wire rope, pressing the elastic guide at its top into the chute of the crossbeam. During the movement of the crane trolley, the elastic guide sequentially interacts with multiple correction components in the chute. The contact generates a reverse force, which drives the lifting anti-deviation mechanism to descend in stages. This multi-stage, progressive approach limits further deviation of the wire rope, breaking down the wire rope's swaying limitation process into multiple stages. This avoids the huge impact of traditional hard collisions and effectively protects the wire rope and lifting structure. When the lifting anti-deviation mechanism rises and presses the elastic guide into the slide groove, the limit frame and the crossbeam form a sliding contact. Combined with the reverse force of the correction component, this not only suppresses the wire rope's swaying but also effectively prevents the trolley from lateral deviation caused by the swaying component.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0017] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of a port container lifting device with a mechanical anti-deviation limiting mechanism according to the present invention. Figure 2 This is a bottom view of a port container lifting device with a mechanical anti-deviation limiting mechanism according to the present invention. Figure 3 This is a schematic diagram of the overall structure of the lifting trolley in a port container lifting device with a mechanical anti-deviation limiting mechanism according to the present invention. Figure 4 This is a schematic diagram of the crossbeam structure in a port container lifting device with a mechanical anti-deviation limiting mechanism according to the present invention; Figure 5 This is a schematic diagram showing the cooperation between the lifting anti-deviation mechanism and the elastic guide component in a port container lifting device with a mechanical anti-deviation limiting mechanism according to the present invention. Figure 6 In this invention Figure 5 Enlarged view of the structure at point A; Figure 7 This is a schematic diagram of the lifting anti-deviation mechanism and elastic abutment component in a port container lifting device with a mechanical anti-deviation limiting mechanism according to the present invention. Figure 8 This is a schematic diagram of the mounting base and limit frame in a port container lifting device with a mechanical anti-deviation limiting mechanism according to the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Crossbeam; 11. Guide rail; 14. Slide groove; 2. Lifting trolley; 21. Moving wheel; 22. Ring groove; 3. Steel wire rope; 4. Mounting base; 41. Anti-detachment rod; 42. Buffer spring; 5. Limiting frame; 51. Rack; 52. Guide groove; 53. Connecting frame; 6. Elastic guide; 61. Guide slider; 62. Abutting slope; 64. Return spring; 7. Elastic abutting component; 71. Sleeve; 72. Insert rod; 73. Elastic pressure ring; 8. Correcting component; 81. Trapezoidal top block; 82. Mounting plate; 9. Lifting and anti-deviation mechanism; 91. Abutting frame; 92. Guide wheel; 93. Wedge push rod; 94. Connecting shaft; 95. Gear; 97. Friction ring; 98. Positioning groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0022] Please see Figures 1-8This invention provides a port container lifting device with a mechanical anti-deviation limiting mechanism, comprising a crossbeam 1 and a lifting trolley 2 that moves along the crossbeam 1. The lifting trolley 2 is connected to a container spreader via a wire rope 3. It also includes a pair of mounting seats 4, which are respectively fixed to both sides of the lifting trolley 2. A limiting frame 5 that slides in contact with the crossbeam 1 is fixedly connected to the top of the mounting seat 4. An elastic guide 6 is embedded in the limiting frame 5. A horizontal groove 14 adapted to the elastic guide 6 is opened on the outer side of the crossbeam 1. Several elastic guides are installed in the groove 14. The six-component correction component 8 and the lifting anti-deviation mechanism 9 are inserted into the mounting base 4. The bottom of the lifting anti-deviation mechanism 9 is in contact with the wire rope 3, and the top of the lifting anti-deviation mechanism 9 is in contact with the elastic guide component 6. When the wire rope 3 deviates obliquely, the lifting anti-deviation mechanism 9 rises and presses the elastic guide component 6 into the slide groove 14. During the movement of the crane trolley 2, the elastic guide component 6 abuts against each correction component 8 in sequence to generate a reverse force, driving the lifting anti-deviation mechanism 9 to descend in stages, thereby limiting the further deviation of the wire rope 3 in a multi-stage progressive manner.

[0023] Specifically, during crane operation, the crane trolley 2 moves back and forth along the length of the crossbeam 1. The crane trolley 2 is suspended and connected to the container spreader below by several steel wire ropes 3. When the crane trolley 2 swings obliquely due to wind force, inertia, or the swing of the spreader during operation, the swinging steel wire rope 3 will generate an oblique compressive force on the bottom of the lifting anti-deviation mechanism 9 in contact with it. Since the lifting anti-deviation mechanism 9 is vertically inserted into the mounting base 4, this oblique compressive force will force the lifting anti-deviation mechanism 9 to move upward in the vertical direction. As the lifting anti-deviation mechanism 9 rises, its top end will... The elastic guide 6, which is in contact with the crossbeam 1, is forcibly pressed into the groove 14 of the crossbeam 1. At this time, the limiting frame 5 is in close contact with the crossbeam 1, initially locking the lateral degree of freedom of the crane trolley 2. As the crane trolley 2 continues to move along the crossbeam 1 in the above state, the elastic guide 6, which is pressed into the groove 14, will slide in the groove 14 as the trolley moves. Since several correction elements 8 are pre-installed in the groove 14, the elastic guide 6 will abut against each correction element 8 in turn during the sliding process. When the elastic guide 6 abuts against a correction element 8, the correction element 8 will exert a reverse force on the elastic guide 6. The force, and the counterforce, are transmitted to the lifting anti-deviation mechanism 9 through the elastic guide 6. Combined with the clamping of the crossbeam 1 by the limiting frame 5, this effectively prevents the lateral displacement of the crane trolley 2 caused by the swaying of the wire rope 3. This counterforce will periodically drive the lifting anti-deviation mechanism 9 downwards. The descent of the lifting anti-deviation mechanism 9 signifies the release of its squeezing and limiting effect on the wire rope 3. Furthermore, since it passes through multiple correction components 8 sequentially, the descent process is multi-stage and gradual; that is, the greater the sway angle of the wire rope 3, the higher the lifting anti-deviation mechanism 9 rises, and the deeper the elastic guide 6 is pressed in. The greater the reverse resistance generated when it comes into contact with the subsequent correction component 8, the more the elastic guide 6 passes over the correction component 8 step by step. The lifting and anti-deviation mechanism 9 descends step by step, and the deviation of the wire rope 3 is restricted and reduced in stages and gradually, eventually returning to the normal state. This mechanically adaptive anti-deviation control method transforms the huge kinetic energy that might have been generated by a hard collision into a gradual work to overcome the deformation of the elastic guide 6 and the resistance of the correction component 8. It completely avoids the huge impact caused by traditional hard limit, effectively protects the wire rope 3 and the lifting structure, and greatly extends the service life of the equipment.

[0024] Compared with the prior art, the embodiments of the present invention convert the oblique sway of the wire rope 3 into the vertical displacement of the lifting and anti-deviation mechanism 9. Then, through the mechanical cooperation of the elastic guide 6 and the multi-stage correction components 8 in the slide 14, the sway force is converted into a reverse progressive resistance, realizing a mechanical adaptive anti-deviation control that increases resistance as the sway increases, and then gradually returns to the correct position. When the wire rope 3 sways obliquely, the lifting and anti-deviation mechanism 9 is squeezed by the wire rope 3 and rises, pressing the elastic guide 6 at its top into the slide 14 of the crossbeam 1. During the movement of the lifting trolley 2, the elastic guide 6 will sequentially interact with the multi-stage correction components 8 in the slide 14. When the correction component 8 comes into contact with the object, it generates a reverse force, thereby driving the lifting anti-deviation mechanism 9 to descend in stages. This limits the further deviation of the wire rope 3 in a multi-stage, progressive manner, decomposing the deviation restriction process of the wire rope 3 into multiple stages. This avoids the huge impact brought by traditional hard collisions and effectively protects the wire rope 3 and the lifting structure. When the lifting anti-deviation mechanism 9 rises and presses the elastic guide component 6 into the slide groove 14, the limit frame 5 and the crossbeam 1 form a sliding contact. Combined with the reverse force of the correction component 8, it can not only suppress the deviation of the wire rope 3, but also effectively prevent the lateral deviation of the lifting trolley 2 caused by the deviation component force.

[0025] In a further embodiment of the present invention, guide rails 11 are fixedly connected to both sides of the inner wall of the crossbeam 1, and movable wheels 21 are installed on both sides of the trolley 2. The movable wheels 21 are provided with annular grooves 22 that are adapted to the guide rails 11. Specifically, the annular grooves 22 are adapted to the shape and size of the guide rails 11. In actual installation, the movable wheels 21 rest on the guide rails 11 through the annular grooves 22 to achieve rolling connection between the trolley 2 and the crossbeam 1, thereby achieving precise guidance of the trolley 2 on the crossbeam 1. The annular grooves 22 can be engaged with the guide rails 11, effectively preventing the movable wheels 21 from derailing during rolling, ensuring the stability of the trolley 2's operation, and providing a stable installation and movement foundation for the subsequent anti-deviation limiting mechanism.

[0026] In a further embodiment of the present invention, the lifting anti-deviation mechanism 9 includes an abutment frame 91 that is movably inserted through the mounting base 4. A guide wheel 92 that rolls in contact with the wire rope 3 is symmetrically installed on one side of the bottom of the abutment frame 91. A wedge-shaped push rod 93 that tilts against the elastic guide member 6 is fixedly connected to the top of the abutment frame 91. Specifically, the abutment frame 91 is vertically inserted through a preset hole on the mounting base 4. The outer circumference of the guide wheel 92 forms a rolling contact with the surface of the wire rope 3. When the wire rope 3 deviates obliquely, the deviated wire rope 3 will squeeze the guide wheel 92 that is in contact with it from the side. Since the guide wheel 92 adopts rolling contact, the wear of the wire rope 3 is greatly reduced. The oblique squeezing force of the wire rope 3 forces the abutment frame 91 to rise vertically as a whole, thereby driving the wedge-shaped push rod 93 at the top to move upward synchronously, providing power for pressing the elastic guide member 6 into the slide groove 14.

[0027] In a further embodiment of the present invention, anti-detachment rods 41 are fixedly connected to both sides of the bottom of the mounting base 4, penetrating the bottom of the abutment frame 91. A buffer spring 42 is provided on the outer sleeve of the anti-detachment rod 41. The two ends of the buffer spring 42 abut against the mounting base 4 and the abutment frame 91 respectively. An anti-detachment end cap is fixed at the bottom of the anti-detachment rod 41 below the abutment frame 91. Specifically, the anti-detachment rod 41 penetrates vertically through the bottom of the abutment frame 91 to limit the lifting and lowering of the abutment frame 91. The anti-detachment rod 41 ensures that the abutment frame 91 can only move in a straight line in the vertical direction, preventing it from deflecting when subjected to force. When the swaying force of the wire rope 3 disappears or the lifting and anti-deviation mechanism 9 needs to be reset, the compressed buffer spring 42 releases elastic potential energy, which can smoothly and quickly push the abutment frame 91 back to the initial position, realizing the automatic reset of the mechanism. At the same time, the buffer spring 42 can also absorb part of the instantaneous impact load.

[0028] In a further embodiment of the present invention, the elastic guide 6 includes a guide slider 61 movably embedded in the limiting frame 5. One side of the guide slider 61 is provided with an abutting inclined surface 62 that abuts against the wedge-shaped push rod 93. A pair of connecting frames 53 are fixedly connected to the outer wall of the limiting frame 5. A return spring 64 is installed between the guide slider 61 and the connecting frame 53. Specifically, when the wedge-shaped push rod 93 rises with the abutting frame 91, its inclined surface will press against the abutting inclined surface 62 of the guide slider 61, converting the vertical upward thrust into a horizontal thrust, forcing the guide slider 61 to overcome the tension of the return spring 64 and move horizontally towards the crossbeam 1 and extend into the slide groove 14. When the wedge-shaped push rod 93 descends, the return spring 64 pulls the guide slider 61 to extend outward, realizing the automatic reset of the elastic guide 6, so as to ensure that the wedge-shaped push rod 93 on the abutting frame 91 can contact the elastic guide 6 every time the wire rope 3 swings.

[0029] In a further embodiment of the present invention, the correction component 8 includes a trapezoidal top block 81 installed on the inner wall of the slide 14. One side of the trapezoidal top block 81 is fixedly connected to an installation plate 82 embedded in the slide 14. The installation plate 82 is embedded and fixedly installed on the inner wall of the slide 14 by fasteners. The side of the guide slider 61 that enters the slide 14 abuts against the trapezoidal top block 81. Specifically, the trapezoidal top block 81 is fixed in the slide 14 by multiple fasteners on the installation plate 82. It can be replaced in time after excessive wear. When the guide slider 61 pressed into the slide 14 moves with the trolley, it will gradually move outward along the inclined surface of the trapezoidal top block 81. The trapezoidal top block 81 generates a reverse thrust on the guide slider 61. This thrust is transmitted back to the wedge-shaped push rod 93 through the guide slider 61, and finally drives the abutment frame 91 to descend, thereby releasing the limiting pressure on the wire rope 3 in stages and realizing progressive correction.

[0030] In a further embodiment of the present invention, the distance from each trapezoidal top block 81 to the groove opening of the slide 14 gradually decreases, and a transition section is formed between adjacent trapezoidal top blocks 81 to facilitate the smooth sliding of the guide slider 61. When the crane trolley 2 moves, the counter-pushing force of the corresponding trapezoidal top block 81 on the guide slider 61 gradually increases. Specifically, when the crane trolley 2 moves, as the distance from each trapezoidal top block 81 to the groove opening gradually decreases, the horizontal counter-pushing force on the guide slider 61 when it comes into contact with the inclined surface gradually increases. This means that as the trolley goes deeper into the shore area, the counter-pushing force of the trapezoidal top block 81 on the guide slider 61 gradually increases, thereby gradually strengthening the correction and restriction force of the lifting anti-deviation mechanism 9 on the wire rope 3. This design fits the working condition characteristics of the crane trolley 2 being closer to the shore and the risk of container swaying is higher in port operations. It can automatically adapt the correction force according to the working position, specifically improve the anti-deviation capability of high-risk areas, and provide stronger anti-deviation protection.

[0031] In a further embodiment of the present invention, one side of the limiting frame 5 slides in contact with the outer wall of the crossbeam 1, and the other side is symmetrically equipped with a rack 51. A connecting shaft 94 is horizontally installed on the abutment frame 91. Both ends of the connecting shaft 94 are fixedly connected with gears 95 that mesh with the rack 51. Specifically, the gears 95 and the rack 51 on the corresponding side are in constant mesh. When the wire rope 3 swings and forces the abutment frame 91 to rise and fall vertically, the gears 95 at both ends of the connecting shaft 94 will roll along the fixed rack 51. Due to the meshing of the gears 95 and the rack 51, the synchronicity and stability of the abutment frame 91's rise and fall are ensured, and the abutment frame 91 is prevented from jamming or tilting due to uneven force on both sides. This further improves the operational reliability of the lifting and anti-deviation mechanism 9. When the gears 95 roll along the rack 51, they can also play an auxiliary guiding role in the lifting and falling action of the abutment frame 91, preventing it from deviating from the movement trajectory and ensuring that the wedge push rod 93 always maintains the correct contact position with the abutment slope 62 of the guide slider 61.

[0032] In a further embodiment of the present invention, an elastic abutment 7 and a friction ring 97 abutting against the elastic abutment 7 are symmetrically sleeved on the connecting shaft 94. A guide groove 52 that cooperates with the elastic abutment 7 is provided on the limiting frame 5. When the connecting shaft 94 moves upward, the elastic abutment 7 moves towards the friction ring 97 under the action of the guide groove 52. The elastic abutment 7 includes a sleeve 71 movably sleeved on the connecting shaft 94, and a part inserted into the guide groove 52 is fixedly connected to one side of the sleeve 71. The insert rod 72 and sleeve 71 are fitted with an elastic pressure ring 73 at one end. Specifically, when the connecting shaft 94 moves upward with the abutment bracket 91, the connecting shaft 94 rotates due to the meshing of the gear 95 and rack 51. At this time, the sleeve 71, which is fitted on the connecting shaft 94, moves axially towards the friction ring 97 under the guidance of the guide groove 52, and drives the elastic pressure ring 73 to gradually press against the friction ring 97. As the upward distance of the connecting shaft 94 increases, the sleeve 71 exerts more pressure on the friction ring 97. The squeezing pressure also increases simultaneously, and the friction between the two increases accordingly, generating resistance to the rotation of the connecting shaft 94, thereby slowing down the rolling speed of the gear 95 along the rack 51. This achieves a gradual damping limitation on the rising speed of the lifting anti-deviation mechanism 9, preventing the lifting anti-deviation mechanism 9 from rapidly shifting due to instantaneous impact force. It further buffers the impact load caused by the sway of the wire rope 3, forming a damping or locking effect on the rising motion of the abutment frame 91. The more violent the sway of the wire rope 3, the higher the abutment frame 91 rises, the greater the rotation angle of the connecting shaft 94, and the greater the frictional braking force between the elastic abutment 7 and the friction ring 97. This achieves secondary mechanical resistance braking against the lateral deviation of the crane trolley 2, further improving the anti-deviation effect. When the sway angle of the wire rope 3 decreases and the lifting anti-deviation mechanism 9 begins to fall and reset, the elastic pressure ring 73 gradually disengages from the pressure on the friction ring 97 under the action of the guide groove 52, and the frictional force decreases accordingly, ensuring that the lifting anti-deviation mechanism 9 can smoothly complete the reset action.

[0033] In a further embodiment of the present invention, a positioning groove 98 adapted to the wire rope 3 is provided on the guide wheel 92, and the positioning groove 98 is provided with anti-slip mesh. Specifically, the cross-section of the positioning groove 98 is U-shaped. The positioning groove 98 can restrict the wire rope 3 in the wheel groove to prevent the wire rope 3 from jumping off when it swings. The anti-slip mesh increases the friction between the guide wheel 92 and the wire rope 3, ensuring that when the wire rope 3 swings obliquely, the swing force can be more effectively transmitted to the guide wheel 92, thereby triggering the action of the entire lifting anti-slip mechanism 9, improving the sensitivity and reliability of the system response.

[0034] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A port container lifting device with a mechanical anti-deviation limiting mechanism, comprising a crossbeam (1) and a lifting trolley (2) moving along the crossbeam (1), wherein the lifting trolley (2) is connected to a container spreader via a wire rope (3), characterized in that, Also includes: A pair of mounting seats (4) are fixed on both sides of the crane trolley (2). The top of the mounting seat (4) is fixedly connected to a limiting frame (5) that slides in contact with the crossbeam (1). An elastic guide (6) is embedded on the limiting frame (5). A sliding groove (14) that matches the elastic guide (6) is horizontally opened on the outside of the crossbeam (1). Several correction components (8) that cooperate with the elastic guide (6) are installed in the sliding groove (14). The lifting anti-deviation mechanism (9) is inserted into the mounting base (4). The bottom of the lifting anti-deviation mechanism (9) is in contact with the wire rope (3), and the top of the lifting anti-deviation mechanism (9) is in abutting cooperation with the elastic guide (6). When the wire rope (3) deviates obliquely, the lifting anti-deviation mechanism (9) rises and presses the elastic guide (6) into the chute (14). During the movement of the crane trolley (2), the elastic guide (6) abuts against each correction component (8) in sequence to generate a reverse force, driving the lifting anti-deviation mechanism (9) to descend in stages, thus limiting the further deviation of the wire rope (3) in a multi-stage progressive manner.

2. The port container lifting equipment with a mechanical anti-deviation limiting mechanism according to claim 1, characterized in that, The inner walls of the crossbeam (1) are fixedly connected to guide rails (11) on both sides, and the lifting trolley (2) is equipped with moving wheels (21) on both sides. The moving wheels (21) are provided with annular grooves (22) that are compatible with the guide rails (11).

3. A port container lifting device with a mechanical anti-deviation limiting mechanism according to claim 1, characterized in that, The lifting anti-deviation mechanism (9) includes an abutment frame (91) that moves through the mounting base (4). A guide wheel (92) that rolls in contact with the wire rope (3) is symmetrically installed on one side of the bottom of the abutment frame (91). A wedge-shaped push rod (93) that tilts against the elastic guide member (6) is fixedly connected to the top of the abutment frame (91).

4. A port container lifting device with a mechanical anti-deviation limiting mechanism according to claim 3, characterized in that, The mounting base (4) has anti-detachment rods (41) that penetrate the bottom of the abutment frame (91) on both sides of its bottom. The anti-detachment rods (41) are covered with buffer springs (42), and the two ends of the buffer springs (42) abut against the mounting base (4) and the abutment frame (91) respectively.

5. A port container lifting device with a mechanical anti-deviation limiting mechanism according to claim 1, characterized in that, The elastic guide (6) includes a guide slider (61) movably embedded in the limiting frame (5). One side of the guide slider (61) is provided with an abutting inclined surface (62) that abuts against the wedge-shaped push rod (93). A pair of connecting frames (53) are fixedly connected to the outer wall of the limiting frame (5). A return spring (64) is installed between the guide slider (61) and the connecting frame (53).

6. A port container lifting device with a mechanical anti-deviation limiting mechanism according to claim 5, characterized in that, The correction component (8) includes a trapezoidal top block (81) installed on the inner wall of the slide groove (14). One side of the trapezoidal top block (81) is fixedly connected to an installation plate (82) embedded in the slide groove (14). The side of the guide slider (61) that enters the slide groove (14) abuts against the trapezoidal top block (81).

7. A port container lifting device with a mechanical anti-deviation limiting mechanism according to claim 6, characterized in that, The distance between each trapezoidal top block (81) and the groove opening of the slide (14) gradually decreases, and a transition section is formed between adjacent trapezoidal top blocks (81) to facilitate the smooth sliding of the guide slider (61). When the crane trolley (2) moves, the counter-pushing force of the corresponding trapezoidal top block (81) on the guide slider (61) gradually increases.

8. A port container lifting device with a mechanical anti-deviation limiting mechanism according to claim 3, characterized in that, The limiting frame (5) has one side sliding contact with the outer wall of the crossbeam (1), and the other side is symmetrically mounted with a rack (51). A connecting shaft (94) is horizontally mounted on the abutting frame (91), and both ends of the connecting shaft (94) are fixedly connected with gears (95) that mesh with the rack (51).

9. A port container lifting device with a mechanical anti-deviation limiting mechanism according to claim 8, characterized in that, The connecting shaft (94) is symmetrically fitted with an elastic abutment (7) and a friction ring (97) that abuts against the elastic abutment (7). The limiting frame (5) is provided with a guide groove (52) that cooperates with the elastic abutment (7). When the connecting shaft (94) moves upward, the elastic abutment (7) moves towards the friction ring (97) under the action of the guide groove (52).

10. A port container lifting device with a mechanical anti-deviation limiting mechanism according to claim 3, characterized in that, The guide wheel (92) is provided with a positioning groove (98) that is compatible with the wire rope (3), and the positioning groove (98) is provided with anti-slip mesh.

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