阅读说明：本技术 用于以多个柄部起吊大袋的具有自动触发机构的吊架 (Hanger with automatic trigger mechanism for lifting big bags with multiple handles ) 是由 D·H·孔奇 于 2019-07-30 设计创作，主要内容包括：本发明涉及一种用于以多个柄部起吊大袋的具有自动触发机构的吊架,所述吊架包括多个倒置钩,所述多个倒置钩借助于相应臂上的独立闭合杆件的简单驱动而设置于所述相应臂的端部中,从而实现所述倒置钩的底部开口的闭合并抓持所述大袋柄部,并且以方便次序允许所述大袋柄部抵着载荷与使吊架臂静置的简单操作姿势的脱离,或所述吊架的晃动,或手动杆件的拉动,使得所述自动触发机构以自动方式触发并且然后实现所述滑动闩锁的所述回缩,从而释放所述柄部。(The present invention relates to a hanger with automatic triggering mechanism for lifting big bags with multiple handles, comprising a plurality of inverted hooks, which are arranged in the ends of respective arms by means of simple actuation of independent closing levers on the respective arms, so as to enable the closing of the bottom openings of the inverted hooks and the gripping of the big bag handles, and in a convenient order to allow the disengagement of the big bag handles against the load from a simple operating posture with the hanger arms resting, or the shaking of the hanger, or the pulling of a manual lever, so that the automatic triggering mechanism triggers in an automatic manner and then enables the retraction of the sliding latch, thus releasing the handles.)

1. A hanger with automatic triggering mechanism for lifting big bags with multiple handles, comprising a plurality of arms (1), said plurality of arms (1) protruding longitudinally and radially so that their ends end in respective hooks, characterized in that said plurality of arms (1) protrude longitudinally and radially from a central tubular housing (11) and each of said hooks is an inverted hook (5), the bottom opening of said inverted hook (5) being closable by means of a sliding latch (4) allowing to achieve:

an open hook position obtained in an automatic manner by lowering a central through pin (12), said central through pin (12) being able to slide vertically inside said central tubular housing (11), wherein said central through pin (12) comprises a diametric downward depression forming a trigger scale (8), said trigger scale (8) being able to push down the bottom end of each of a plurality of pivoting triggers (13) in such a way that: -the sliding latch (4), the intermediate articulated arm (3) and the pivoting trigger (13) are misaligned and therefore cause the retraction of the sliding latch (4) towards the open hook position; and

a closed hook position corresponding to the alignment of the sliding latch (4), the intermediate articulated arm (3) and the pivoting trigger (13) by means of the sliding of the closing rod (6), so that the innermost end of the pivoting trigger remains in interference with the vertical movement path of the trigger scale (8) of the central through-pin (12).

2. A hanger with automatic triggering mechanism for lifting big bags with multiple handles according to claim 1, wherein it further comprises a crescent shaped tubular core in the bottom end of the central tubular housing (11), forming an axial cam (15c) of the housing, the axial support track of the axial cam (15c) corresponding to the axial support track of the lower axial cam (15p) of the central through pin (12).

3. A hanger with automatic triggering mechanism for lifting big bags with multiple handles according to claim 1 or 2, wherein it further comprises a lever (20) and a hinged pull rod (21) as a movement follower of said lever (20), said lever (20) being pivotally connected with said central through pin (12), said central through pin (12) arranging said lever at its innermost end, said hinged pull rod (21) allowing to pull a rotary collar (22) in such a way that said housing (11) is forced to slide with respect to said central through pin (12).

Technical Field

The invention relates to a device intended to lift and transport a load; and more particularly, the present invention relates to a device of the type known as a spreader, which allows the lifting and transport of large bags, commonly known as jumbo bags or adjustable intermodal bulk containers (FIBCs); and even more particularly the present invention explains a quick release mechanism of a load for the purpose of convenience.

Background

It is known to those skilled in the art that currently on the market there are provided devices for lifting and transporting big bags, commonly known as lifting crossing frames, comprising a radially extending arm which is kept in its position, usually by gripping the handle entering from above, with a pulling effect obtained by a traditional hook coinciding at its end with the handle of the big bag and thus due to the weight of the load, so that disengagement of the handle of said big bag is usually achieved by means of shaking or otherwise (the operator must descend from the transport vehicle to disengage each of the handles).

Thus, some variants of the design of traditional hangers or hoisting crossing frames have evolved in capacity, shape, but these variants always follow the principles of function and structure known on the market (i.e. traditional hooks for upper lashing of the handle and subsequent manual handling by the operator for hooking and unhooking in the vicinity of the load itself with risks and required handling times).

Thus, in view of the market needs and of the surprising results that have been obtained with the hangers proposed herein, the present inventors have appreciated that they are developing a novel and inventive device that allows to perform safer and faster engagement and disengagement operations than the prior art and at the same time ensures safe transport with effective engagement of the handles of big bags, since these handles are not only hooked but they are effectively held and gripped by means of some advantageous inverted hooks (bottom closure by sliding latch).

Disclosure of Invention

It is an object of the present invention to provide a hanger for lifting big bags with multiple handles that allows to disengage big bags being gripped and transported without falling from the vehicle at the moment of unloading, by means of a single operating posture that makes the hanger rest or sway.

Another object of the present invention is to provide a hanger for lifting which ensures a safe hooking of the stem of a big bag being gripped on the hanger, avoiding accidental drops. The present invention provides a hanger with automatic triggering mechanism for lifting big bags with multiple handles, comprising a plurality of arms projecting longitudinally and radially, so that their ends end in respective hooks, characterized in that said plurality of arms project longitudinally and radially from a central tubular housing and each of the hooks is an inverted hook, the bottom opening of which can be closed by means of a sliding latch, allowing to achieve: an open hook position obtained in an automatic manner by lowering a central through-pin vertically slidable inside said central tubular housing, wherein said central through-pin comprises a diametrically downward depression forming a trigger scale capable of pushing down the bottom end of each of a plurality of pivoting triggers in such a way that: the sliding latch, intermediate hinged arm, and pivoting trigger are misaligned and thereby cause retraction of the sliding latch toward an open hook position; and a closed hook position corresponding to the alignment of said sliding latch, said intermediate hinged arm and said pivoting trigger by means of sliding of a closure bar, such that an innermost end of said pivoting trigger remains interfering with a vertical movement path of said trigger scale of said central through pin.

It is therefore an object of the present invention to improve the safety conditions when big bags are handled with multiple handles, thus improving the handling of big bags, avoiding the manual operations of adjustment and detachment of said big bags performed by the operator, and then enabling a single operator to perform all handling operations of said big bags with the hanger of the present invention.

It is therefore an advantage of the present invention to reduce operator contact with the contents of big bags, especially when these big bags contain chemical or toxic substances.

Furthermore, it is an advantage of the invention that a big bag (such as the one proposed herein) gripped by means of the hanger can be arranged in the correct position before detachment, and that the detachment can be performed only when the big bag has released its weight.

In case of emptying big bags of this type (which comprise a bottom discharge port that can be opened to discharge the product contained therein, even hanging them as a weight in the unloaded state), said big bags can be disengaged by pulling the lever, thus also providing manual disengagement at a distance by means of the cord.

Drawings

Fig. 1 is a perspective and partial cross-sectional view of a hanger for lifting according to a first preferred embodiment of the present invention, showing two possible positions of the dashed line hanging big bag and latch, one on the left being a closed latch or "closed hook" position and one on the right being an open latch or "open hook" position.

Fig. 2 is a side view in partial cross-section of a lifting cradle of the present invention according to a first preferred embodiment, with the latch in an open position.

Fig. 3 is a side view in partial cross-section of the lifting cradle of the present invention according to the first preferred embodiment, showing a bag having multiple handles and hanging from those handles (shown in phantom) with the latch in the closed position.

Detailed Description

As shown in FIG. 1, the present invention includes a hanger (10) for lifting a big bag (14) with a plurality of handles (16). As is well known to those skilled in the art, large bags of this type for bulk cargo of some products typically include four handles, ties, straps, or lugs from which the large bag is readily grasped for transport.

The four arm (1) hanger has been exemplified because the four handle big bag is one of the most common types of bags. However, it is possible to extend the premise of the present invention to a greater number of arms, or even a lesser number of arms. As can be seen in the figures, the arm is inclined towards its end in a descending manner at an angle (a), which has proved to be a highly convenient design, since among other things it enables the same handle (16), once fixed in position, to contribute to the friction or drag by the sliding latch (4) and to hold the sliding latch (4) in the gripping position in a further developed manner.

The arms (1) are attached to a central housing (11), the arms (1) projecting longitudinally and radially from the central housing (11) so that their ends end in respective hooks, which for the purposes of the present invention are inverted hooks (5). The housing is generally tubular and allows for sliding of the central through-pin (12), it being possible to hang the entire cradle (10) from the central through-pin (12) because at the upper end of the central through-pin (12) there is arranged a connection means (17), such as an eyelet, in such a way that the cradle can be connected to a vehicle or a crane hook. The attachment means (17) may be suitably supported on a beam or similarly gripped by a vehicle, such as a lift truck.

The central through-pin (12) is not only a shaft, but also comprises a recess (8) on the diameter or periphery, the recess (8) reducing the diameter or periphery downwards and constituting for the invention a "triggering stage" or pushing shoulder, the recess (8) being described further below in terms of its function. For the purposes of reader's reference, the reduction in diameter for the desired overall dimensions of this type of hanger may be sufficient towards the centre by an amount of about 1cm (0.4") per side of the diameter of the pin (12).

The bottom end of the central tubular housing (11) comprises a "crescent" shaped tubular core forming the axial cams (15c) of the housing, the axial support tracks of the axial cams (15c) corresponding to the axial support tracks of the bottom axial cams (15p) of the central through-pin (12). The fit track between the cams is a wave track or inclined plane that is convenient to choose so that when one cam is pressed against the other, rotational adjustment is made until a full fit and fixation of the set is achieved. In this way, when the arm (1) of the cradle (10) is loaded with the weight of the big bag (14), adjustment by fitting is achieved between the housing and the axial cams (15c, 15p) of the pin, so as to position the big bag in the correct way for transport. This can be seen in fig. 3.

In contrast, when the central through-pin (12) slides with respect to the housing (11) (assisted by the insertion of a bottom spring (17) shown in a schematic way for the sake of clarity), the separation of the two axial cams (15c, 15p) is produced; the central through pin (12) is activated to help separate the two axial cams (15c, 15p) when the arm is released from the load applied by the big bag being gripped, for example when supporting the bag on the ground.

The manner of joining the handles (16) of the big bags is performed as follows: the arm (1) is configured to enable radial movement of a corresponding sliding latch (4), the corresponding sliding latch (4) being projectable over the end of the arm (1) through some of the inverted hooks (5) in the end of the arm and having, for the present invention, the shape of an inverted fork, that is to say an inverted "U". It is therefore possible to engage each handle (16) so as to insert them inside the corresponding inverted hook (5) in a looped manner and to move the corresponding sliding latch (4) by means of the lever (6). In this way, each handle (16) is gripped within the corresponding inverted hook (5) (left arm in closed position, see fig. 1, or both latches in closed position, see fig. 3). It is obvious that to enable the passage of the inverted hook (5), said hook should carry some suitably finished through holes (25), although these through holes (25) may be end housings or the like which allow the latches to be received or fitted in the hook in such a way that they block the bottom opening.

It is thus possible to achieve the hooking mentioned above, since the central through pin (12) with vertical movement path is hanging and therefore the trigger scales (8) obtained by the recesses on the diameter/periphery are adequately placed on the plurality of pivoting triggers (13) in such a way that they can be aligned with the corresponding sliding latches (4) by operating the closing lever (6). The pivoting trigger (13) is connected to the corresponding sliding latch (4) by means of some corresponding intermediate articulated arms (3) in such a way that they remain aligned and held in the closed hook position with a simple push-out movement of the closing lever (6). It should be noted that once latch closure is activated, it is not possible to open the hook at the moment of lifting the load to move the closure bar in the opposite direction; the big bag handle effectively restrains the pivoting trigger (13) due to the weight of the load.

Thus, when the load is being lifted, the axial cams (15c, 15p) match each other, positioning the arms, sliding the latches (4), and closing the bottom part of the inverted hook (5), which is held firmly in its position due to the big bag's own load, making it possible to transport the load safely to the destination.

Once the big bag (14) has been shipped to the destination, it is released by lowering the hanger (10) until the big bag rests with the handle (16) relaxed and then the centre going through the pin (12) continuing to lower, which, because the hanger arm exerts a force against the load, creates a trigger scale (8) (a depression in diameter) to pull the innermost ends of the plurality of pivoting triggers (13), causing a "trigger" retraction of the sliding latch (4) (see fig. 2), and in this way a so-called auto-trigger is achieved. That is, the innermost end of each of the plurality of pivoting triggers (13) interferes with the vertical movement path of the trigger scale (8) of the central through pin (12). When the pivoting trigger (13) is forced to turn, the retraction of the sliding latch (4) pulls the corresponding intermediate articulated arms (3), since all the intermediate articulated arms (3) are pivoted. This is facilitated by the activation of the latch's respective retraction springs (9), these retraction springs (9) tending to retract the sliding latch (4) towards the centre of the cradle (10). . It is worth mentioning that the innermost end of the pivoting trigger (13) is inserted inwards from the central tubular housing (11), since the central tubular housing (11) has an opening or slot for the insertion of said trigger; the opening, slot or groove for the passage or insertion of the trigger may be put into practice in a wide variety of embodiments.

As shown in the figures, the arms (1) may share a structure similar to the others in the figures, or they may take on distinct variants thereof, a complete inversion or showing of the internal mechanism (with internal walls, ribs, reinforcements, etc.). In this sense, the latch's retraction spring (9) can be housed around a suitable sliding latch (4) which is preferably cylindrical and can be held in position between the inner wall (18) of the arm (for spring retention) and a ring (19) or fixed stop on the suitable sliding latch (4). In this way, the retraction springs (9) of the latch can accumulate elastic energy when the sliding latch (4) is closed and then they can release their energy to retract the sliding latch (4) at the moment of activation of the corresponding pivoting trigger (13).

Although described above and as will be understood by those skilled in the art, it is possible to supplement such a cradle with a lever mechanism for manual disengagement (2); in case manual release or disengagement by means of an operator is desired, it is sufficient that such a lever mechanism for manual disengagement (2) allows to activate the corresponding pivoting trigger (13) in the same way as already explained above, which means that the thrust of the end of the trigger is forced downwards.

In particular, as an example, a lever disengagement mechanism for manual disengagement (2) can be put into practice by means of the lever (20) itself, the lever (20) being pivotally connected with a central through pin (20) (as shown in fig. 1), arranging an articulated pull rod (21) (the articulated pull rod (21) allows pulling by means of a rotary collar (22) in such a way as to force the housing (11) to rise with respect to the central through pin (12)) at the innermost end, and thus causing the trigger scale (8) to push and trigger all the triggers (13) in such a way as to force the sliding latch (4) to assume the closed position, releasing the load, i.e. disengaging the handle of the big bag. Thus, and in order to realise the manual disengagement mechanism, the cradle comprises a rod (20) pivotally connected with a central through-pin (12), the central through-pin (12) being arranged at its innermost end with a hinged pull rod (21) as a follower of the movement of said rod, the hinged pull rod (21) allowing to pull a rotary collar (22) in a manner forcing the housing (11) to slide with respect to said central through-pin (12), for example, in particular the housing comprising a circular groove into which the rotary collar (22) is inserted, such as for example, when conveniently put into practice with a ring (23), the ring (23) is screwed or adjusted (as shown in the figures) on the upper part of the end of the same central tubular housing (11).

It must be observed that both the interaction of the trigger dial (8) with the trigger (13) and the interaction of the collar (22) with the housing (11) are rotational, which allows the freedom of positioning mentioned above, that is to say the rotation and adjustment of the cradle (to conveniently engage the load) and the working of the axial cams (15c, 15p) of the housing and of the pin (to align the load during the lifting of the load). Thus, the convenience of the automatic triggering mechanism of the hanger proposed by the present invention has been shown and described, which enables a quick lifting and automatic release of big bags in the manner described above.