Novel rotating pin suitable for RAM (Random Access Memory) lifting appliance
By adopting new rotary pins with joint bearings and lock nut structures in RAM spreaders, the problems of wear and safety hazards of rotary mechanisms in the prior art are solved, and a higher service life and safety are achieved.
Patent Information
- Application Number
- CN202411424712.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2024-12-27
AI Technical Summary
The rotating mechanism of existing RAM spreaders is prone to friction and shear forces after long-term use, causing wear of the HALF ring, which may lead to breaking the lock head and causing safety hazards.
A new type of rotary pin is designed, adopting joint bearings and lock nut structures, which transmit the rotation of the rotary handle through the rotation of joint bearings, lock the lock head and the container, and improve service life and overall strength through thread matching, while at the same time, the joints are The lower ball seat of the bearing is equipped with oil grooves to reduce wear and prevent loosening through the pin and groove structure.
The service life of resale has been extended from 100,000 to 200,000, which has increased the safety and load-bearing capacity of the spreader, reducing the risk of loosening caused by vibration or impact.
Smart Images
Figure CN119191039A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of mechanical manufacturing, in particular to a new type of rotation pin suitable for a RAM hanger. Background Art
[0002] A RAM lift is a type of lifting equipment used to lift, rotate and carry heavy objects. A RAM lift usually consists of a rotatable rotating mechanism that can be attached to various types of lifting machinery such as bridge cranes, portal cranes, mobile cranes, etc.
[0003] The rotating mechanism of the RAM sling usually includes a swivel pin body, and the lower end of the swivel pin body is a lock structure. During the lifting operation, the lower end of the swivel pin body can be inserted into the long hole above the container, and then the swivel pin body is rotated 90 degrees to lock the lock at its lower end with the container, so that the container can be lifted. When the container is lifted to the designated location, the lock pin is rotated 90 degrees, and the lock at the lower end of the swivel pin body can be detached from the container. At present, the rotating mechanism is usually in the form of a HALF ring. Friction and shear force will be generated every time the swivel pin body runs. Long-term use will cause severe wear on the HALF ring part, and may eventually lead to breakage, causing the lock to fall and cause a container drop accident.
[0004] Therefore, the inventors discovered during implementation that the above-mentioned prior art has at least the following defects: there are certain safety hazards when using the existing RAM sling for lifting operations. Summary of the invention
[0005] The embodiment of the present application solves the technical problem of potential safety hazards in the prior art when using RAM slings for lifting operations by providing a new type of rotation pin suitable for RAM slings.
[0006] In order to solve the above technical problems, the present invention adopts the following technical scheme: a new type of turn pin suitable for RAM hangers, including a turn pin body, the lower end of the turn pin body is a lock head, the upper end of the turn pin body is provided with an external thread and a turn lock nut matching the external thread, a turn handle is provided below the turn lock nut, the turn handle is nested in the upper part of the turn pin and fixed to the turn pin body by a flat key; a joint bearing is also installed on the upper part of the turn pin body, and the upper hemispherical seat of the joint bearing is fixed to the turn pin body and abuts against the bottom of the turn handle.
[0007] The lock at the lower end of the spherical bearing is inserted into the long hole above the container, and the extended end of the hydraulic cylinder in the RAM spreader moves, thereby driving the handle and the spherical bearing to rotate, so that the lock is engaged in the long hole above the container. Then the RAM spreader rises, which can drive the container to rise. Since the rotation of the spherical bearing is transmitted through the handle, there is a lock nut on the top of the handle that matches the thread of the turn pin body. Therefore, the HALF ring type is changed to a threaded type, and the service life can be upgraded from the original 100,000 MOV to 200,000 MOV, which increases the overall strength and improves safety.
[0008] Further, the lower hemispherical seat of the spherical plain bearing can be fixed to the bearing plate of the RAM hanger.
[0009] Furthermore, an oil groove is provided on the lower hemispherical seat; the oil groove is conducive to the distribution of lubricating oil, reduces the wear of the spherical bearing, and thus increases the service life of the spherical bearing.
[0010] Furthermore, the turning handle includes an upper panel, a lower panel and a turning handle body located between the upper panel and the lower panel.
[0011] Furthermore, a connecting pin is fixed on one side above the turning handle, and the connecting pin can be connected to the extended end of the hydraulic cylinder in the RAM sling.
[0012] Furthermore, the thickness of the spherical bearing is 34 mm, the inner diameter of the upper hemispherical seat is 42 mm, and the inner diameter of the lower hemispherical seat is 52 mm; the thickness of the spherical bearing is increased, so that it can withstand a larger load, and can also prevent the collision between the rotating pin body and the lower hemispherical seat of the spherical bearing.
[0013] Furthermore, the upper end of the twist lock nut is evenly distributed with grooves along the circumferential direction.
[0014] Furthermore, a radially penetrating through hole is provided at the upper end of the turn pin body, and a latch is installed in the through hole, and the end of the latch can be engaged in the groove of the turn lock nut; since the turn lock nut is provided with a groove, it can cooperate with the latch to achieve an anti-loosening function, preventing it from loosening due to vibration or impact during use, thereby further improving safety.
[0015] It can be seen from the above technical solutions that the present invention has at least the following technical effects or advantages: When the present invention is used for lifting operations, the lock head at the lower end of the spherical bearing is inserted into the long hole above the container, and the extended end of the hydraulic cylinder in the RAM spreader is actuated, thereby driving the handle and the spherical bearing to rotate, so that the lock head is engaged in the long hole above the container. Then the RAM spreader rises, which can drive the container to rise. The rotation of the spherical bearing is transmitted through the handle, and the upper part of the handle has a lock nut that matches the thread of the turn pin body, thereby changing the HALF ring type to a thread type, and the service life can be upgraded from the original 100,000 MOV to 200,000 MOV, increasing the overall strength and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 A full cross-sectional diagram of Figure 3 It is a schematic diagram of the structure of the turning handle in the present invention; Figure 4 It is a structural schematic diagram of the spherical bearing in the present invention.
[0017] Explanation of the reference numerals: 1. Turn handle, 2. Joint bearing, 3. Turn pin body, 4. Flat key, 5. Turn lock nut, 6. Lower panel, 7. Turn handle body, 8. Upper panel, 9. Connecting pin. DETAILED DESCRIPTION
[0018] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.
[0019] The present invention discloses a novel transfer pin suitable for RAM spreaders, such as Figure 1 As shown, it includes a turn pin body 3, the lower end of the turn pin body 3 is a lock head, and the upper part of the turn pin body 3 is equipped with a turn handle 1 and a turn lock nut 5, wherein the upper end of the turn pin body 3 has an external thread, and the turn lock nut 5 cooperates with the external thread, the turn handle 1 is located below the turn lock nut 5, and the turn handle 1 and the turn pin body 3 are connected by a flat key 4.
[0020] like Figure 1 , Figure 2 As shown in , a spherical joint bearing 2 is also installed on the upper part of the turn pin body 3, and the upper hemispherical seat of the spherical joint bearing 2 is fixed to the turn pin body 3 and its upper end abuts against the bottom of the turn handle 1. The lower hemispherical seat of the spherical joint bearing 2 can be fixed to the load-bearing plate of the RAM sling. The provision of the spherical joint bearing 2 allows the turn pin body 3 to swing within a certain range, and even if the container swings during the lifting process, the turn pin body 3 can still maintain a vertical direction. On the other hand, when the lower hemispherical seat of the spherical joint bearing 2 is fixed to the load-bearing plate of the RAM sling, when the turn lock nut 5 is tightened, the turn handle 1 and the turn pin body 3 can be kept relatively fixed. Therefore, when the turn handle 1 rotates, it can drive the turn pin body 3 to rotate, thereby realizing the locking or loosening of the lock head on the container.
[0021] In this embodiment, the upper end of the turn lock nut 5 is provided with a groove, and the groove is provided in multiple numbers and is evenly distributed along the circumferential direction. Correspondingly, the upper end of the turn pin body 3 is provided with a through hole that penetrates radially, and a plug or a bolt penetrates through the through hole, and the end of the plug or the bolt can be engaged in the groove of the turn lock nut 5. Therefore, when the turn lock nut 5 is tightened, the plug or the bolt is inserted along the radial direction of the turn pin body 3, and the end of the plug or the bolt is engaged in the groove of the turn lock nut 5, so that the turn lock nut 5 can be prevented from loosening, thereby improving safety.
[0022] like Figure 1 , Figure 3 As shown, the handle 1 includes an upper panel 8, a lower panel 6 and a handle body 7, wherein the handle body 7 is located between the upper panel 8 and the lower panel 6. A connecting pin 9 is fixed above the upper panel 8, and the upper end of the connecting pin 9 can be connected to the extended end of the hydraulic cylinder in the RAM sling, thereby the handle 1 and the handle body 3 can be driven to rotate through the extension and contraction of the hydraulic cylinder.
[0023] In this embodiment, the lower hemispherical seat of the spherical bearing 2 is provided with an oil groove, which is conducive to the distribution of lubricating oil, thereby increasing the service life of the spherical bearing 2. Figure 4 As shown, in this embodiment, the thickness of the spherical bearing 2 is 34 mm, the inner diameter of the upper hemispherical seat is 42 mm, and the inner diameter of the lower hemispherical seat is 52 mm. In this way, the thickness of the spherical bearing 2 is relatively large, which can further improve the service life of the spherical bearing 2.
[0024] When the present invention is used for lifting operations, the lock head at the lower end of the turn pin body 3 is inserted into the long hole above the container, and the extended end of the hydraulic cylinder in the RAM spreader is actuated, thereby driving the turn handle 1 and the turn pin body 3 to rotate, so that the lock head is engaged in the long hole above the container. Then the RAM spreader rises, and the container can be lifted. Since the rotation of the turn pin body 3 is transmitted through the turn handle 1, the turn handle 1 has a turn lock nut 5 threadedly matched with the turn pin body 3, so compared with the existing HALF ring form, the service life of the turn pin body 3 is increased and the safety is improved.
[0025] In the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the purpose of describing the present invention rather than requiring the present invention to be constructed or operated in a specific position, and therefore should not be construed as limiting the present invention. The terms "connected" and "connected" in the present invention should be understood in a broad sense, for example, it can be a connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.
[0026] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in their embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novelties disclosed herein.
Claims
1. A novel turn pin suitable for a RAM sling, comprising a turn pin body (3), the lower end of the turn pin body (3) being a lock head, characterized in that: The upper end of the rotating pin body (3) is provided with an external thread and a rotating lock nut (5) matched with the external thread, and a rotating handle (1) is provided below the rotating lock nut (5). The rotating handle (1) is nested in the upper part of the rotating pin body (3) and is fixed to the rotating pin body (3) through a flat key (4); a joint bearing (2) is also installed on the upper part of the rotating pin body (3), and an upper hemispherical seat of the joint bearing (2) is fixed to the rotating pin body (3) and abuts against the bottom of the rotating handle (1).
2. A new type of transfer pin suitable for RAM sling according to claim 1, characterized in that: The lower hemispherical seat of the spherical bearing (2) can be fixed to the bearing plate of the RAM lifting device.
3. A new type of transfer pin suitable for RAM sling according to claim 2, characterized in that: An oil groove is provided on the lower hemispherical seat of the spherical bearing (2).
4. A new type of transfer pin suitable for RAM sling according to claim 3, characterized in that: The turning handle (1) comprises an upper panel (8), a lower panel (6), and a turning handle body (7) located between the upper panel (8) and the lower panel (6).
5. A new type of transfer pin suitable for RAM sling according to claim 4, characterized in that: A connecting pin (9) is fixed to one side above the turning handle (1), and the connecting pin (9) can be connected to the extended end of the hydraulic cylinder in the RAM sling.
6. A new type of transfer pin suitable for RAM sling according to any one of claims 2 to 5, characterized in that: The thickness of the spherical bearing (2) is 34 mm, the inner diameter of the upper hemispherical seat is 42 mm, and the inner diameter of the lower hemispherical seat is 52 mm.
7. A new type of transfer pin suitable for RAM sling according to claim 6, characterized in that: The upper end of the rotary lock nut (5) is uniformly provided with grooves along the circumferential direction.
8. A new type of transfer pin suitable for RAM sling according to claim 7, characterized in that: A through hole extending radially through the upper end of the rotation pin body (3) is provided, and a latch is installed in the through hole. The end of the latch can be engaged in the groove of the rotation lock nut (5).