Self-unloading lifting appliance

Abstract

A self-unloading type lifting appliance comprises a lifting head, a movable clamp is arranged in the lifting head, the movable clamp is arranged in the lifting head in a sliding mode, and the movable clamp is matched with an elastic piece; an inserting hole is formed in the middle of the hanging head and used for installing a hanging rod, a limiting head is arranged at the top of the hanging rod, a slope is arranged on the side portion of the limiting head and used for pushing the movable clamp to slide, and when the movable clamp breaks away from the limiting head, the movable clamp is used for limiting the limiting head from falling downwards; a slidable movable ring is arranged on the hanging rod, and an inclined face matched with the movable clamp is arranged on the movable ring. The automatic unhooking device is simple in structure and convenient to operate and use, manual participation is reduced in the loading and unloading process, existing hoisting equipment can be used as a carrier, the automatic unhooking device is installed on the hoisting equipment to be matched with a load, heavy objects can be hoisted, and the automatic unhooking purpose is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of slings, in particular to a self-unloading sling. Background Art

[0002] There are many containers that need to be unloaded at the temporary port of the inland canal. Due to the lack of professional container lifting equipment and grab beams, the only way is to use ordinary methods such as wire ropes and clasps, and manually climb up to the height to lock and unload. The shortcomings of the existing technology are: traditional slings usually lack effective automatic limit and anti-fall protection measures, especially for irregular loads or loads with difficult center of gravity, which are prone to accidental fall during operation, posing a threat to the safety of personnel and property. Even if some slings have limit devices, they are often fixed designs and cannot adapt to loads of different sizes and shapes, and have poor flexibility and versatility. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a self-unloading sling. The utility model has a simple structure and is easy to operate and use. The manual participation in the loading and unloading process is reduced. The existing lifting equipment can be used as a carrier and installed on the lifting equipment to cooperate with the load. The heavy objects can be lifted and the purpose of automatic unhooking can be achieved.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A self-unloading lifting device comprises a lifting head, wherein a movable card is arranged inside the lifting head, wherein the movable card is slidably arranged inside the lifting head, and the movable card cooperates with an elastic member; a plug hole is arranged in the middle of the lifting head, wherein the plug hole is used for installing a lifting rod, a limiting head is arranged at the top of the lifting rod, and an inclined surface is arranged at the side of the limiting head, wherein the inclined surface of the limiting head is used for pushing the movable card to slide, and when the movable card is separated from the limiting head, the movable card is used for limiting the limiting head from falling downward;

[0006] A slidable movable ring is arranged on the suspension rod, and an inclined surface matched with the movable card is arranged on the movable ring.

[0007] Preferably, the elastic member is a cylindrical spring sleeved on the movable card, the cylindrical spring is limited by a pad, the pad is installed on the hanging head, the movable card passes through the pad, and the diameter of the end of the movable card is greater than the diameter of the cylindrical spring.

[0008] Preferably, the limiting head is in a truncated cone shape, and the outer diameter of the movable ring gradually decreases from the middle to both ends.

[0009] Preferably, the lifting head is used to connect with the lifting equipment; and the lifting rod is used to connect with the load end.

[0010] Preferably, the number of active cards is at least two.

[0011] The utility model can achieve the following beneficial effects:

[0012] The utility model has a simple structure and is easy to operate and use, reduces manual participation in the loading and unloading process, can use existing lifting equipment as a carrier, is installed on the lifting equipment and cooperates with the load, can lift heavy objects, and achieve the purpose of automatic unhooking. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a diagram of the process of locking the lifting head downwards according to the utility model;

[0016] Figure 3 This is a schematic diagram of the utility model.

[0017] In the figure: a lifting head 1, a cushion block 2, a movable card 3, an elastic member 4, a movable ring 5, a lifting rod 6, a limit head 61, and a load end 7. DETAILED DESCRIPTION

[0018] There are many containers that need to be unloaded at the temporary port of the inland canal. Due to the lack of professional container lifting equipment and grab beams, they can only use ordinary methods such as wire ropes and clamps, and manually climb up to the height to lock and unload. In order to ensure personnel safety, save costs, and quickly load and unload vehicles, a self-unloading sling was invented, which can use gantry cranes and wheeled cranes as carriers. The structure has a lifting head 1 that is connected to the lifting equipment, a washer 2 is the supporting end of the spring, a movable card 3 is an internal part of the lifting head, a spring 4 is an automatic rebound device of the movable card 3, a movable ring 5 can move up and down the fixed rod, and the lifting rod 6 is a fixed part. The specific plan is as follows:

[0019] The preferred solution is Figure 1-2 As shown, a self-unloading sling includes a lifting head 1, wherein a movable card 3 is provided inside the lifting head 1, wherein the movable card 3 is slidably arranged inside the lifting head 1, and the movable card 3 cooperates with an elastic member 4; a plug hole is provided in the middle of the lifting head 1, wherein the plug hole is used to install a lifting rod 6, wherein a limit head 61 is provided at the top of the lifting rod 6, wherein a slope is provided at the side of the limit head 61, wherein the slope of the limit head 61 is used to push the movable card 3 to slide, and when the movable card 3 is separated from the limit head 61, the movable card 3 is used to limit the limit head 61 from falling downward; a slidable movable ring 5 is provided on the lifting rod 6, wherein the movable ring 5 is provided with a slope cooperating with the movable card 3. The lifting head 1 is used to be connected to a lifting device; and the lifting rod 6 is used to be connected to a load end. The number of movable cards 3 is at least two. This tool is used on a loading and unloading fixture, and can automatically unload buckles to meet some unloading requirements.

[0020] Furthermore, the elastic member 4 is a cylindrical spring sleeved on the movable card 3, the cylindrical spring is limited by the cushion block 2, the cushion block 2 is installed on the hanging head 1, the movable card 3 passes through the cushion block 2, and the diameter of the end of the movable card 3 is greater than the diameter of the cylindrical spring. The cushion block 2 is a pad iron, and the cylindrical spring is used to play a resetting role.

[0021] Furthermore, the stopper head 61 is in a truncated cone shape, and the outer diameter of the movable ring 5 gradually decreases from the middle to the two ends. When the stopper head 61 moves upward, it drives the movable card 3 to contract; when the hanging head 1 moves downward, the movable ring 5 moves upward relative to the movable card 3, so similarly, the movable ring 5 drives the movable card 3 to contract.

[0022] How this tool works:

[0023] like Figure 3 As shown, the main body of the self-unloading spreader is a forging assembly, which is divided into two parts. The lifting head part is connected to the lifting equipment, and the boom part is fixed to the load end, such as the container is shipped from the factory and welded to the lifting point.

[0024] When locked, the crane head descends by its own weight. When it contacts the boom, the movable cards on both sides will contract inwards and the crane head will continue to descend. When the movable cards pass through the reducing section, they will be stuck in the large diameter position of the boom. At this time, the crane head and the boom are in contact with force and the lifting can be completed.

[0025] During self-unloading, after the crane head picks up the heavy object and places it in the designated position, it continues to descend and will contact the movable ring. The movable card will pass through the upper part of the movable ring until it is stuck in the reducer at the largest point. It continues to descend and the movable card will be stuck in the lower reducer. At this time, the lifting movable ring will move upward with the crane head until it contacts the top of the boom. It continues to lift and the movable card will shrink inward due to the lifting force. When it passes completely, it will rise to the top of the boom. At this time, it will be disengaged and the self-unloading is completed.

[0026] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A self-unloading spreader, characterized in that: The invention comprises a hanging head (1), wherein an active card (3) is arranged inside the hanging head (1), wherein the active card (3) is slidably arranged inside the hanging head (1), and the active card (3) cooperates with an elastic member (4); a plug hole is arranged in the middle of the hanging head (1), and the plug hole is used to install a hanging rod (6); a limit head (61) is arranged at the top of the hanging rod (6), and an inclined surface is arranged on the side of the limit head (61); the inclined surface of the limit head (61) is used to push the active card (3) to slide; when the active card (3) is separated from the limit head (61), the active card (3) is used to limit the limit head (61) from falling downward; A slidable movable ring (5) is provided on the suspension rod (6), and an inclined surface cooperating with the movable clamp (3) is provided on the movable ring (5).

2. A self-unloading sling according to claim 1, characterized in that: The elastic member (4) is a cylindrical spring sleeved on the movable clamp (3). The cylindrical spring is limited by a cushion block (2). The cushion block (2) is mounted on the hanging head (1). The movable clamp (3) passes through the cushion block (2). The diameter of the end of the movable clamp (3) is greater than the diameter of the cylindrical spring.

3. A self-unloading sling according to claim 1, characterized in that: The limiting head (61) is in the shape of a truncated cone, and the outer diameter of the movable ring (5) gradually decreases from the middle to both ends.

4. A self-unloading spreader according to claim 1, characterized in that: The lifting head (1) is used to be connected to a lifting device; and the lifting rod (6) is used to be connected to a load end.

5. The self-unloading spreader according to claim 1, characterized in that: The number of activity cards (3) must be at least two.

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