Windproof system of manual crane pull rod

Abstract

The utility model relates to a windproof system of a manual crane pull rod, which belongs to the technical field of hoisting equipment and comprises a pull rod body with the length capable of being adjusted manually, a clamping assembly is arranged at the bottom of the pull rod body and comprises two connecting plates, and the top ends of the two connecting plates are hinged to the pull rod body. Clamp plates are hinged to the lower ends of the two connecting plates correspondingly, and the middle sections of the two clamp plates are rotationally connected through a pin shaft; a limiting device is arranged on one side of the pull rod body and comprises a limiting baffle with one end hinged to the crane, and the other end of the limiting baffle is connected with a tensioning chain capable of being connected with the lower section of one clamp plate in a hanging mode. The limiting baffle is further provided with a reset assembly which enables the limiting baffle to be tightly attached to the crane in the initial state. The clamping assembly in the idle state is connected through the tensioning chain of the limiting baffle, windproof treatment on the clamping assembly is facilitated, the limiting baffle in the stressed state can be buffered through the reset assembly, and the upper limit of the windproof capacity is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting equipment, in particular to a windproof system for a manual crane pull rod. Background Art

[0002] Port cranes, also known as container terminal cranes, are mainly used for loading and unloading containers on ships at the shore of container terminals. It uses mechanisms such as lifting, telescopic and body rotation to achieve the lifting, loading, unloading and movement of cargo, thereby greatly improving the work efficiency of the port. The working principle of the port crane can be summarized in the following steps: Lifting system: The lifting hook or clamp is driven by an electric or hydraulic mechanism to lift the cargo in the vertical direction. Telescopic system: The telescopic function of the crane is realized by an electric or hydraulic mechanism to change its working radius. Rotation system: The rotation of the fuselage is realized by the rotating mechanism, so that the crane can rotate a certain angle in the horizontal direction, making it easier for the operator to place the cargo accurately in the designated position. Control system: The control system of the crane is the core part to realize its various functions. It is usually composed of an electrical control system and a hydraulic control system. The various actions of the crane are controlled by manipulating mechanical handles or buttons.

[0003] Port cranes play a vital role in port operations, primarily in the following ways: Improving work efficiency: They can quickly and accurately complete cargo lifting, transshipment, loading and unloading operations, significantly improving port efficiency. Enhancing safety: Advanced control systems and precise operation ensure the safety of cargo during loading and unloading. Reducing labor costs: They reduce the need for manual handling, thereby lowering labor costs.

[0004] When operating in open air or coastal areas, port cranes face the challenge of wind, necessitating appropriate wind protection measures to ensure their stability and safety. Without effective wind protection measures, port cranes can slip, capsize, and other dangerous situations, causing damage to personnel and equipment. Therefore, wind protection devices are crucial to ensuring stable crane operation. Utility Model Content

[0005] In order to solve the problem that outdoor lifting equipment is easily affected by wind and may slip or overturn, causing high risk of damage to personnel and surrounding equipment, the utility model provides a windproof system for a manual crane pull rod.

[0006] The utility model is realized through the following technical solutions:

[0007] A windproof system for a manual crane tie rod comprises a tie rod body whose length can be manually adjusted, and a clamping assembly at the bottom of the tie rod body. The clamping assembly comprises two connecting plates whose top ends are hinged to the tie rod body, and the lower ends of the two connecting plates are respectively hinged to clamping plates, and the middle sections of the two clamping plates are rotatably connected by a pin shaft.

[0008] A limiting device is provided on one side of the pull rod body, and the limiting device includes a limiting baffle hinged on the crane at one end, and a tensioning chain that can be hooked to the lower section of one of the clamping plates at the other end; the limiting baffle is also provided with a reset component that presses the limiting baffle tightly against the crane in the initial state.

[0009] As the operating end of the crane, the clamping assembly is easily affected by external wind and may slip. Connecting the clamping assembly in the idle state through the tensioning chain of the limit baffle helps to achieve windproof treatment for the clamping assembly. The reset assembly can form a buffer for the limit baffle under stress, thereby improving the upper limit of windproof capacity.

[0010] A further improvement of the present invention is that the reset assembly includes a stop screw rotatably mounted on the crane. A compression spring is disposed at the free end of the stop screw. The compression spring abuts against the stop plate and pushes the stop plate toward the crane. The stop screw guides the compression spring in its expansion and contraction direction and also provides support within the compression spring.

[0011] A further improvement of the present invention is that a fastening nut matched with a compression spring is threadedly connected to the free end of the limit screw. By adjusting the position of the fastening nut on the limit screw, the opening angle of the limit baffle can be adjusted.

[0012] A further improvement of the present invention is that the limit baffle is provided with a slot through which the limit screw passes; the compression spring is located between the limit baffle and the fastening nut. The limit screw passing through the limit baffle helps to increase the contact area between the compression spring and the limit baffle.

[0013] A further improvement of the present invention is that the limit device further includes a limit switch connected to the crane control system, which cooperates with a limit stop. The contact and separation of the limit stop and the limit switch transmit different position status information to the control system, facilitating the operator's assessment of the status of the clamping assembly.

[0014] A further improvement of the present invention is that the end of the limit baffle close to the limit switch is provided with a trigger sub-plate matched with the limit switch, and contacts the limit switch through the trigger sub-plate.

[0015] A further improvement of the present invention is that the pull rod body includes a connecting rod hinged at its top end to the crane. A first connecting sleeve and a second connecting sleeve are respectively provided on the connecting rod and the clamping assembly. The first and second connecting sleeves are disposed opposite each other, and an adjustment screw is threadedly connected between the first and second connecting sleeves. The threaded sections at both ends of the adjustment screw rotate in opposite directions. The first connecting sleeve rotates the adjustment screw under the pulling action of the connecting rod, and the second connecting sleeve rotates under the weight of the clamping assembly, thereby adjusting the length of the entire pull rod body.

[0016] A further improvement of the present invention is that an adjusting wrench is provided at the middle section of the adjusting screw, which helps to improve the convenience of operating the adjusting screw.

[0017] A further improvement of the present invention is that the second connecting sleeve is hingedly connected to the clamping assembly, thereby increasing a rotation point on the pull rod body.

[0018] A further improvement of the present invention is that the connecting sleeve 1 and the connecting rod are hingedly connected, and a rotation point is added to the pull rod body.

[0019] It can be seen from the above technical solution that the beneficial effects of the utility model are: the clamping assembly, as the operating end of the crane, is easily affected by external wind and slides. The clamping assembly in the idle state is connected by the tensioning chain of the limit baffle, which helps to achieve windproof treatment of the clamping assembly. The reset assembly can form a buffer for the limit baffle in the stressed state, thereby improving the upper limit of windproof capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural diagram of a specific implementation method of the utility model.

[0022] Figure 2 It is a schematic diagram of a limiting device according to a specific embodiment of the present utility model.

[0023] In the accompanying drawings: 1. Pull rod body; 11. Connecting rod; 12. Connecting sleeve 1; 13. Adjusting screw; 131. Adjusting wrench; 14. Connecting sleeve 2; 15. Connecting plate; 16. Clamping plate; 2. Limiting device; 21. Limit baffle; 22. Limit switch; 23. Tensioning chain; 24. Limiting screw; 25. Fastening nut; 26. Compression spring; 27. Trigger sub-plate. DETAILED DESCRIPTION

[0024] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0025] As attached Figure 1-2 As shown in the attached Figure 1-2 As shown, a windproof system for a manual crane pull rod includes a pull rod body 1 whose length can be manually adjusted, and a clamping assembly is provided at the bottom of the pull rod body 1. The clamping assembly includes two connecting plates 15 whose top ends are hinged to the pull rod body 1, and the lower ends of the two connecting plates 15 are respectively hinged with clamping plates 16, and the middle sections of the two clamping plates 16 are rotatably connected by a pin shaft.

[0026] The pull rod body 1 comprises a connecting rod 11 hinged at its top end to the crane. A first connecting sleeve 12 and a second connecting sleeve 14 are respectively provided on the connecting rod 11 and the clamping assembly. Connecting sleeves 12 and 14 are positioned opposite each other, with an adjustment screw 13 threadedly connected between them. The threads at either end of the adjustment screw 13 rotate in opposite directions. Under the pull of the connecting rod 11, the first connecting sleeve 12 rotates the adjustment screw 13, while the weight of the clamping assembly forces the second connecting sleeve 14 to adjust the length of the entire pull rod body 1.

[0027] The middle section of the adjusting screw 13 is provided with an adjusting wrench 131, which helps to improve the convenience of operating the adjusting screw 13.

[0028] The second connecting sleeve 14 is hingedly connected to the clamping assembly, and the first connecting sleeve 12 is hingedly connected to the connecting rod 11. A rotation point is added to the pull rod body 1.

[0029] A stopper device 2 is provided on one side of the pull rod body 1. This device comprises a stopper plate 21 hinged to the crane at one end and a tensioning chain 23 connected to the lower section of one of the clamping plates 16 at the other end. The stopper plate 21 also includes a reset assembly that initially secures the stopper plate 21 against the crane. This reset assembly includes a stopper screw 24 rotatably mounted on the crane. A compression spring 26 is attached to the free end of the stopper screw 24. This compression spring 26 abuts against the stopper plate 21 and pushes it toward the crane. The stopper screw 24 guides the compression spring 26 in its expansion and contraction directions and also provides internal support. A fastening nut 25, which mates with the compression spring 26, is threadedly connected to the free end of the stopper screw 24. Adjusting the position of the fastening nut 25 on the stopper screw 24 allows the opening angle of the stopper plate 21 to be adjusted.

[0030] The limit baffle 21 is provided with a slotted hole through which the limit screw 24 passes; the compression spring 26 is located between the limit baffle 21 and the fastening nut 25. The limit screw 24 passing through the limit baffle 21 helps to increase the contact area between the compression spring 26 and the limit baffle 21.

[0031] The limit device 2 also includes a limit switch 22 connected to the crane control system, which cooperates with the limit baffle 21. The contact and separation between the limit baffle 21 and the limit switch 22 transmit different position status information to the control system, facilitating the operator's judgment of the status of the clamping assembly. The crane's control panel is equipped with two indicator lights, one corresponding to whether the limit switch 22 is triggered or not. That is, when the limit switch 22 is in the contact-triggered state, one indicator light illuminates; when the limit switch 22 is separated from the limit baffle 21, the other indicator light illuminates, making it easy to distinguish whether the clamping assembly is connected to the limit baffle 21.

[0032] The limit baffle 21 is provided with a trigger sub-plate 27 that cooperates with the limit switch 22 at one end thereof close to the limit switch 22; the trigger sub-plate 27 extending toward the side of the limit switch 22 not only makes up for the insufficient distance between the limit baffle 21 and the limit switch 22, but also utilizes the flexibility of its own single-piece plate to extend the contact time with the limit switch 22, which helps to improve the accurate judgment of the limit device 2 with windproof function.

[0033] The utility model describes a windproof system for a manual crane pull rod. The clamping assembly, serving as the operating end of the crane, is susceptible to sliding due to external wind. The clamping assembly in an idle state is connected by a tensioning chain of a limit baffle, which helps to achieve windproof treatment for the clamping assembly. The reset assembly can form a buffer for the limit baffle in a stressed state, thereby improving the upper limit of windproof capability.

[0034] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0035] The terms "upper," "lower," "outer," "inner," and the like, if used in the specification and claims of the present invention and the accompanying drawings, are used to distinguish relative positions and do not necessarily define them. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present invention described herein can be implemented in sequences other than those illustrated or described herein. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0036] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A windproof system for a manual crane rod, comprising a rod body (1) whose length can be manually adjusted, and a clamping assembly at the bottom of the rod body (1), characterized in that: The clamping assembly comprises two connecting plates (15) whose top ends are hinged to the pull rod body (1), the lower ends of the two connecting plates (15) are hinged to clamping plates (16), and the middle sections of the two clamping plates (16) are rotatably connected via a pin shaft; A limiting device (2) is provided on one side of the pull rod body (1), and the limiting device (2) includes a limiting baffle (21) hinged on the crane at one end, and a tensioning chain (23) that can be hooked to the lower section of one of the clamping plates (16) at the other end; the limiting baffle (21) is also provided with a reset component that presses the limiting baffle (21) against the crane in the initial state.

2. A windproof system for a manual crane pull rod according to claim 1, characterized in that: The reset assembly comprises a limit screw (24) rotatably arranged on the crane, a free end of the limit screw (24) is provided with a compression spring (26), the compression spring (26) abuts against the limit baffle (21) and pushes the limit baffle (21) toward one side of the crane.

3. A windproof system for a manual crane pull rod according to claim 2, characterized in that: The free end of the limiting screw (24) is threadedly connected with a fastening nut (25) that matches the compression spring (26).

4. A windproof system for a manual crane pull rod according to claim 3, characterized in that: The limiting baffle (21) is provided with a slotted hole, through which the limiting screw (24) passes; and the compression spring (26) is located between the limiting baffle (21) and the fastening nut (25).

5. A windproof system for a manual crane pull rod according to any one of claims 1 to 4, characterized in that: The limit device (2) further comprises a limit switch (22) connected to the crane control system, and the limit switch (22) cooperates with the limit baffle (21).

6. A windproof system for a manual crane pull rod according to claim 5, characterized in that: One end of the limit baffle (21) close to the limit switch (22) is provided with a trigger sub-plate (27) that matches the limit switch (22).

7. The windproof system for a manual crane pull rod according to claim 5, characterized in that: The pull rod body (1) includes a connecting rod (11) whose top end is hinged on the crane, and a connecting sleeve 1 (12) and a connecting sleeve 2 (14) are respectively provided on the connecting rod (11) and the clamping assembly. The connecting sleeve 1 (12) and the connecting sleeve 2 (14) are arranged opposite to each other, and an adjusting screw (13) is threadedly connected between the connecting sleeve 1 (12) and the connecting sleeve 2 (14), and the thread sections at both ends of the adjusting screw (13) rotate in opposite directions.

8. The windproof system for a manual crane pull rod according to claim 7, characterized in that: An adjusting wrench (131) is provided in the middle section of the adjusting screw (13).

9. The windproof system for a manual crane pull rod according to claim 7, characterized in that: The second connecting sleeve (14) is hingedly connected to the clamping assembly.

10. The windproof system for a manual crane pull rod according to claim 7, characterized in that: The connecting sleeve 1 (12) and the connecting rod (11) are hingedly connected.

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