A buffer device for a reach stack

Abstract

The utility model requests protect a kind of buffer device for reach stacker, and its technical scheme main point is including support beam, support beam movably connects with moving seat, moving seat is connected with spin lock, the top rotary connection of moving seat is connected with the roller of abutting connection with support beam, roller is fixedly connected with first brake pad, the bottom of moving seat movably is equipped with abutting block, abutting block is fixedly connected with the extension component extending to roller, extension component is connected with second brake pad, the utility model realizes brake effect by the contact of first brake pad and second brake pad, and the distance from container is converted to the distance of first brake pad and second brake pad by the cooperation of abutting block and extension component, to form the deformation of an internal element, absorb and dissipate impact energy, convert intense rigid impact into controllable reciprocating attenuation motion, to protect connecting component, reach the purpose of improving security and protecting equipment promotion.

Description

Technical Field

[0001] This utility model relates to a buffer device, and more specifically, it relates to a buffer device for frontal suspension. Background Technology

[0002] As key mobile machinery in logistics nodes such as ports and railway freight yards, reach stackers primarily function to handle, stack, and load / unload containers. Because the spreader is a rigid structure, it relies on the interlocking of the twist locks on the spreader and the corner fittings on the container to achieve connection during gripping. In actual operation, a separate movable seat is used to move the twist locks, and positioning is determined by the contact between the movable seat and the container. However, in practical use, it has been found that the contact between the movable seat and the container can cause damage to the container structure and internal cargo. Impact loads can also act on critical structures such as the spreader, shortening the equipment's lifespan. Therefore, a buffer device for reach stackers is needed. This device can absorb and dissipate impact energy through the deformation of internal components, converting strong rigid impacts into controllable reciprocating attenuated motion to protect the connecting components.

[0003] For the reasons mentioned above, the problem addressed in this application is how to absorb and dissipate impact energy through the deformation of internal components. Utility Model Content

[0004] To address the shortcomings of existing technologies, a front-mounted suspension buffer device is provided. This device can absorb and dissipate impact energy through the deformation of internal elastic elements, transforming strong rigid impacts into controllable reciprocating damped motion to protect connecting components.

[0005] To achieve the above objectives, the following technical solution is provided: A front-mounted suspension buffer device includes a main frame, a telescopic beam fixedly connected to the main frame, a support beam fixedly connected to the telescopic end of the telescopic beam, a movable seat movably connected to the support beam, the telescopic direction of the telescopic beam and the moving direction of the movable seat being perpendicular to each other on a horizontal plane, a rotary lock connected to the movable seat, a roller rotatably connected to the top of the movable seat and abutting against the support beam, a first brake pad fixedly connected to the roller, a through hole and an abutting block movably provided at the bottom of the movable seat, the abutting block extending to both ends of the movable seat, an extension component fixedly connected to the abutting block extending to the roller, and a second brake pad connected to the extension component; after the abutting block moves, the second brake pad abuts against the first brake pad and prevents the roller from rotating.

[0006] Furthermore, a track is fixedly connected to the support beam, and the extension direction of the track is perpendicular to the extension direction of the telescopic beam on the horizontal plane, with rollers movably connected to the track.

[0007] Furthermore, a power assembly is fixedly connected to the end of the support beam, which is used to drive the moving seat to move.

[0008] Furthermore, the movable base is provided with at least three mounting holes for installing a rotary lock, and the three mounting holes are distributed in a triangular shape.

[0009] Furthermore, the installation direction of the rotary lock is perpendicular to the movement direction of the abutment block in the vertical plane.

[0010] Furthermore, the movable seat is provided with a limiting groove communicating with the through hole, the abutment block is fixedly connected to the limiting block, and the limiting block is movably connected in the limiting groove.

[0011] Furthermore, there are two rollers, which are respectively located on both sides of the extension component. The rotation centers of the two rollers are located on the same axis, and the extension direction is the same as the movement direction of the contact block.

[0012] Furthermore, the extension component includes an extension rod, a movable rod, and a mounting plate. The two ends of the extension rod are respectively connected to the movable rod and the abutment block. The movable rod passes through the rotation center of the roller and is movably connected to the movable seat. The mounting plate is fixedly connected to the movable rod. The roller is located between the mounting plate and the extension rod. The second brake pad is fixedly connected to the mounting plate.

[0013] Furthermore, a spring is installed inside the movable base, with both ends of the spring fixedly connected to the inner wall of the movable base and the extension rod, respectively.

[0014] In summary, the above technical solution has the following beneficial effects: This utility model achieves automatic response to impact loads through a design similar to mechanical inertia braking. Specifically, the braking effect is achieved through the contact between the first brake pad and the second brake pad. The cooperation of the contact block and the extension component converts the distance to the container into the distance between the first brake pad and the second brake pad, thereby forming a deformation of an internal component that absorbs and dissipates impact energy. This transforms the strong rigid impact into a controllable reciprocating attenuation motion to protect the connecting components, thus achieving the purpose of improving safety and protecting the equipment. Attached Figure Description

[0015] Fig. 1 This is a three-dimensional structural diagram of a front-mounted suspension buffer device.

[0016] Fig. 2 This is a cross-sectional view of the upper half of the movable seat in this utility model.

[0017] Fig. 3 This is a cross-sectional view of the lower half of the movable seat in this utility model.

[0018] Reference numerals: 1. Support beam; 2. Movable seat; 3. Abutment block; 4. Extension component; 5. Second brake pad; 6. Spring; 11. Track; 12. Power components; 21. Roller; 22. First brake pad; 23. Mounting hole; 24. Limiting groove; 25. Limiting block; 41. Extension rod; 42. Moving rod; 43. Mounting plate. Detailed Implementation

[0019] Reference Figs. 1-3 As shown, a front-mounted suspension buffer device includes a main frame, a telescopic beam fixedly connected to the main frame, a support beam 1 fixedly connected to the telescopic end of the telescopic beam, a movable seat 2 movably connected to the support beam 1, the telescopic direction of the telescopic beam and the moving direction of the movable seat 2 being perpendicular to each other on a horizontal plane, the movable seat 2 being connected to a rotary lock, a roller 21 rotatably connected to the top of the movable seat 2 and abutting the support beam 1, a first brake pad 22 fixedly connected to the roller 21, a through hole and a contact block 3 movably provided at the bottom of the movable seat 2, the contact block 3 extending to both ends of the movable seat 2, an extension component 4 extending to the roller 21 fixedly connected to the contact block 3, and a second brake pad 5 connected to the extension component 4; after the contact block 3 moves, the second brake pad 5 abuts against the first brake pad 22 and prevents the roller 21 from rotating.

[0020] The telescopic beam can change its length in one direction, and the support beam 1 and the movable seat 2 can cooperate to change the position of the movable seat 2 in one direction. Since the telescopic beam's telescopic direction and the movable seat 2's moving direction are perpendicular to each other on the horizontal plane, a movable seat 2 that can move arbitrarily on the horizontal plane can be formed on the main frame.

[0021] Since reach stackers are typically used to move heavy objects, mechanical linkage devices are more suitable for use as buffer devices compared to electronic sensing structures. The core of this invention is a mechanical linkage braking system. During normal movement or container alignment, the moving seat 2 slides on the support beam 1, and its top roller 21 rolls normally with low frictional resistance. However, as the spin lock on the spreader approaches the container, the abutment block 3 contacts the container and moves relative to the moving seat 2. This movement of the abutment block 3 causes the fixed extension component 4 to move as well, thus enabling the extension component 4 to move the second brake pad 5, which then comes into close contact with the first brake pad 22 fixed to the roller 21. The enormous friction between the two brake pads instantly stops the roller 21 from rotating further. Because the roller 21 is locked, the friction between it and the support beam 1 changes from rolling friction to sliding friction, resulting in a sharp increase in resistance. This rapidly dissipates the impact energy, effectively suppressing the continued movement or swaying of the moving seat 2, creating a braking effect, and achieving both buffering and braking.

[0022] This device operates entirely through mechanical linkage, utilizing the principle of physical inertia. Once the contact block 3 comes into contact with the container, the braking program activates immediately, reacting much faster than electronic devices that rely on sensors and control systems, with virtually no delay. This rapidly absorbs and dissipates impact energy, significantly reducing the swaying and swinging of the spreader and container. This greatly improves the stability and safety of the handling process, effectively reducing the risk of metal fatigue and structural damage, thereby extending the overall service life of the reach stacker.

[0023] This invention achieves automatic response to impact loads through a design similar to mechanical inertia braking. Specifically, the braking effect is achieved through the contact between the first brake pad 22 and the second brake pad 5. The cooperation of the contact block 3 and the extension component 4 converts the distance to the container into the distance between the first brake pad 22 and the second brake pad 5, thereby forming a deformation of an internal component that absorbs and dissipates impact energy. This transforms the strong rigid impact into a controllable reciprocating attenuation motion to protect the connecting components, thereby improving safety and protecting the equipment.

[0024] A track 11 is fixedly connected to the support beam 1. The extension direction of the track 11 is perpendicular to the extension direction of the telescopic beam on the horizontal plane. Rollers 21 are movably connected to the track 11. The movable seat 2 is supported on the track 11 by the rollers 21 on the top. During normal operation, the rollers 21 roll smoothly on the track 11 with very little frictional resistance, allowing the movable seat 2 and the rotary lock to move laterally easily and accurately to align with the container.

[0025] When the movable seat 2 approaches the container, the abutment block 3 inside the movable seat 2 abuts against the container, causing it to move back and forth relative to the main body of the movable seat 2. The movement of the abutment block 3 pushes the extension component 4, causing it to move the second brake pad 5 at its end toward the first brake pad 22. Subsequently, the second brake pad 5 rubs against the first brake pad 22, and the resulting frictional torque prevents the roller 21 from rotating. Once the roller 21 is locked, the contact state between it and the track 11 instantly changes from low-resistance rolling friction to high-resistance sliding friction. This sliding friction generates huge resistance, quickly absorbing and dissipating the impact energy, thereby effectively suppressing the continued movement or shaking of the movable seat 2, playing a role in buffering and braking.

[0026] In addition, a power assembly 12 is fixedly connected to the end of the support beam 1, which is used to drive the movable seat 2 to move.

[0027] The movable base 2 is provided with at least three mounting holes 23 for installing the rotary lock. The three mounting holes 23 are distributed in a triangular shape, and the triangularly distributed mounting holes 23 provide a stable support for the rotary lock, forming a stable force-bearing structure.

[0028] The installation direction of the rotary lock is perpendicular to the moving direction of the abutment block 3 in the vertical plane. This allows for precise fitting of the container's shape, preventing situations where the rotary lock, abutment block 3, and the container form an angle that would prevent gripping.

[0029] The movable base 2 has a limiting groove 24 communicating with the through hole. The abutment block 3 is fixedly connected to a limiting block 25, which is movably connected within the limiting groove 24. This ensures that the abutment block 3 can only move smoothly along the preset direction of the locking force. It prevents the abutment block 3 from accidentally shifting or moving excessively within the movable base 2, and accurately transmits distance changes to the extension component 4.

[0030] Two rollers 21 are provided, respectively located on both sides of the extension component 4. The rotation centers of the two rollers 21 are located on the same axis, and their extension direction is the same as the movement direction of the contact block 3. The extension component 4 includes an extension rod 41, a moving rod 42, and a mounting plate 43. The two ends of the extension rod 41 are respectively connected to the moving rod 42 and the contact block 3. The moving rod 42 passes through the rotation center of the rollers 21 and is movably connected to the moving seat 2. The mounting plate 43 is fixedly connected to the moving rod 42. The rollers 21 are located between the mounting plate 43 and the extension rod 41. The second brake pad 5 is fixedly connected to the mounting plate 43. A spring 6 is provided inside the moving seat 2, and the two ends of the spring 6 are fixedly connected to the inner wall of the moving seat 2 and the extension rod 41, respectively.

[0031] When there is no impact, the preload of the spring 6 keeps the transmission structure formed by the contact block 3, the extension rod 41, the moving rod 42 and the mounting plate 43 in the initial position. At this time, the second brake pad 5 is separated from the first brake pad 22, the roller 21 can rotate freely, and the braking system is in standby mode.

[0032] When a container needs to be grasped, the abutment block 3 moves upon contact with the container, first compressing the spring 6, and then transmitting the force to the moving rod 42 via the extension rod 41. The moving rod 42 is driven to move laterally at the rotation center of the two rollers 21. Depending on the direction of movement of the abutment block 3, one of the mounting discs 43 drives the second brake pad 5 to move and contact the first brake pad 22 of one of the rollers 21, thereby achieving a braking effect. This structure facilitates production and installation, and allows for continued use in reverse order after damage to one side of the structure, saving maintenance costs and improving component utilization.

[0033] When the container is released, space is left for the contact block 3 to move. The compressed spring 6 then releases energy, pushing the extension rod 41, which in turn causes the contact block 3, the moving rod 42, and the mounting plate 43 to reset. At this time, the second brake pad 5 and the first brake pad 22 gradually separate, and the brake is gradually released. Furthermore, by selecting springs 6 with different stiffnesses, the hand size required to trigger the brake can be adjusted, thus adapting to container lifting operations with different working conditions and weight requirements.

Claims

1. A front-mounted suspension buffer device, comprising a main frame, a telescopic beam fixedly connected to the main frame, a support beam fixedly connected to the telescopic end of the telescopic beam, a movable seat movably connected to the support beam, the telescopic direction of the telescopic beam and the moving direction of the movable seat being perpendicular to each other on a horizontal plane, and the movable seat being connected to a rotary lock, characterized in that, The top of the movable seat is rotatably connected to a roller that abuts against the support beam. The roller is fixedly connected to a first brake pad. The bottom of the movable seat is movably provided with a through hole and a contact block that passes through the through hole. The contact block extends out of both ends of the movable seat. The contact block is fixedly connected to an extension component that extends to the roller. The extension component is connected to a second brake pad. After the contact block moves, the second brake pad abuts against the first brake pad and prevents the roller from rotating.

2. The front-mounted suspension buffer device according to claim 1, characterized in that, A track is fixedly connected to the support beam. The extension direction of the track is perpendicular to the extension direction of the telescopic beam on the horizontal plane, and rollers are movably connected to the track.

3. A front-mounted suspension buffer device according to claim 1, characterized in that, A power assembly is fixedly connected to the end of the support beam, and the power assembly is used to drive the moving seat to move.

4. A front-mounted suspension buffer device according to claim 1, characterized in that, The movable base has at least three mounting holes for installing a rotary lock, and the three mounting holes are distributed in a triangular shape.

5. A front-mounted buffer device according to claim 4, characterized in that, The installation direction of the rotary lock and the moving direction of the abutment block are perpendicular to each other on the vertical plane.

6. A front-mounted buffer device according to claim 4, characterized in that, The movable seat is provided with a limiting groove communicating with the through hole, and the abutment block is fixedly connected to the limiting block, which is movably connected in the limiting groove.

7. A front-mounted suspension buffer device according to any one of claims 1-6, characterized in that, The rollers are provided in two quantities and are respectively located on both sides of the extension component. The rotation centers of the two rollers are located on the same axis, and the extension direction is the same as the movement direction of the contact block.

8. A front-mounted buffer device according to claim 7, characterized in that, The extension component includes an extension rod, a movable rod, and a mounting plate. The two ends of the extension rod are connected to the movable rod and the abutment block, respectively. The movable rod passes through the rotation center of the roller and is movably connected to the movable seat. The mounting plate is fixedly connected to the movable rod. The roller is located between the mounting plate and the extension rod. The second brake pad is fixedly connected to the mounting plate.

9. A front-mounted buffer device according to claim 8, characterized in that, The movable seat is equipped with a spring, and the two ends of the spring are fixedly connected to the inner wall of the movable seat and the extension rod, respectively.

Images