Load collapse prevention device for dolly

Abstract

To prevent a load from collapsing, by fastening two lines of load fastening belts across a load.SOLUTION: A horizontal portion C5 for connecting a first post portion C3 and a second post portion C3' erected from a loading platform C1 is provided. A belt fastening tool 2 is fixed to a one-end side of the horizontal portion C5. A load fastening belt 1 is wound in the belt fastening tool 2, and the load fastening belt 1 is pulled therein by elastic force. A leading end of the load fastening belt 1 is fixed to a belt-end fixing portion 7 on the other side of the horizontal portion C5. The load fastening belt 1 is passed through a sliding ring through which the load fastening belt 1 is folded into two lines, and a lock hook is fixed to the sliding ring. After a load P is loaded on the loading platform C1, the load fastening belt 1 is pulled out from a lead-out port of the belt fastening tool 2 against the elastic force, the load P is pressed by the two lines of load fastening belts 1, and the lock hook is locked to a target locking portion of the dolly C at the other end of the dolly C.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a device for preventing load collapse on a trolley for tightly fastening and fixing a load with a load hanging belt in a trolley for transportation.

Background Art

[0002] For example, Patent Document 1 discloses that a load collapse preventing tool for a trolley is attached to a trolley, and by feeding out a load hanging belt from this load collapse preventing tool, it is passed over a load and the load is tightened and fixed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in Patent Document 1, the load hanging belt passed over the load is only in one row, and it is easy for the balance of the load to be disrupted during transportation, and there is a high possibility that the load will collapse on both the left and right sides of the belt.

[0005] An object of the present invention is to solve the above problems and provide a device for preventing load collapse on a trolley that passes two rows of load hanging belts over the upper part of the load and makes it difficult for load collapse to occur.

Means for Solving the Problems

[0006] The anti-collapse device for a trolley according to the present invention for achieving the above object is an anti-collapse device for a trolley that can be attached to a transport trolley having a pair of left and right first and second pillar portions erected on both sides of one end of a loading platform, and a gripping bar constructed at the upper ends of these first and second pillar portions. It is provided near the first pillar portion and includes a belt tightening tool for winding and storing a retractable hanging belt, a sliding ring slidably inserted through the hanging belt fed out from the belt tightening tool, and a locking hook directly or indirectly connected to the sliding ring and locking to a locked portion at the other end of the trolley. The tip of the hanging belt is fixed via a passing portion of the hanging belt provided near the second pillar portion or fixed near the second pillar portion.

Effect of the Invention

[0007] According to the anti-collapse device for a trolley according to the present invention, since it is possible to hang and tighten two rows of hanging belts on the load, it is difficult for the load to collapse during transportation.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiment for Carrying out the Invention

[0009] The present invention will be described in detail based on the illustrated embodiments. FIG. 1 is a perspective view of the anti-collapse device for a trolley in a state where the transport trolley is unloaded, FIG. 2 is a perspective view seen from the front of the state where the hanging belt is hung over the load, and FIG. 3 is a perspective view seen from the rear.

[0010] As shown in FIG. 1, the transport cart C has a loading platform C1 for loading goods, and the cart C is made movable by four wheels C2 provided at the four corners of the lower surface of the loading platform C1. Further, on both sides, for example, at the front end of the loading platform C1, a pair of left and right metal first and second column portions C3, C3' are erected in the vertical direction, and a gripping bar C4 for operating the transport cart C is hung between the upper ends of these first and second column portions C3, C3'. Also, at an intermediate height position of the first and second column portions C3, C3', a metal cross member C5 connecting the first and second column portions C3, C3' is provided in the horizontal direction.

[0011] The anti-collapse device for the cart is a device attachable to the transport cart C, installed near the first column portion C3, and includes a belt tightening tool 2 that winds and houses a pull-out load hanging belt 1, a sliding ring 3 slidably inserted through the pulled-out load hanging belt 1, and a locking hook 5 directly or indirectly connected to the sliding ring 3 via a second belt 4 and locked to a locked portion at the other end of the transport cart C.

[0012] The belt tightening tool 2 is for feeding out the load hanging belt 1 to tighten the goods, and a commercially available product can also be adopted. It is fixed to one side of the cross member C5 near the first column portion C3.

[0013] The size of the belt tightening tool 2 is about 10 cm in width, 15 cm in height, and 3 cm in depth. Inside, a load hanging belt 1 for fixing goods, made of a flat belt of polypropylene, for example, 2 m in length and 25 mm in width, is wound around a roll and stored so as to be feedable.

[0014] The hanging belt 1 is drawn inward by a biasing force in the winding direction, i.e., the direction of the arrow shown in the figure, for example, by a spiral spring. The hanging belt 1 is also provided with a locking mechanism (not shown), and the feeding and rewinding states of the hanging belt 1 can be locked by, for example, a button-type locking mechanism, and the state of the hanging belt 1 can be maintained. By releasing the lock of this button-type locking mechanism, the hanging belt 1 can be fed and rewound again.

[0015] The tip 6 of the hanging belt 1 pulled out from the belt tightening fixture 2 is fixed to a belt end fixing portion 7 located near the second column portion C3' on the other side of the cross beam portion C5.

[0016] Although the belt end fixing portion 7 is newly provided on the cross beam portion C5 as shown in the figure, the tip 6 may be fixed using the gap where the column portion C3 and the cross beam portion C5 are connected as the belt end fixing portion 7. The positions of both ends of the hanging belt 1 on the cross beam portion C5 determine the interval between the two rows of hanging belts 1 hung on the load P and are sufficiently separated.

[0017] A slidable ring 3 made of, for example, metal is inserted through the fed hanging belt 1 in a slidable manner, and a second belt 4 made of the same material as the hanging belt 1 is attached to the slidable ring 3, and a locking hook 5 made of, for example, metal is fixed to the tip of this second belt 4.

[0018] In the cart C of FIG. 1, for convenience due to no load, the locking hook 5 is locked to the gripping bar C4. In this state, the hanging belt 1 is stretched with a strong tension by the biasing force of the spiral spring, and the second belt 4 is pulled, so that the locking hook 5 is locked so as not to come off the gripping bar C4.

[0019] FIG. 2 is a perspective view seen from the front of a state in which a plurality of loads P made of cardboard boxes or the like are loaded on the loading platform C1 of the transport cart C and the hanging belt 1 is hung over the load P in two rows, and FIG. 3 is a perspective view seen from the rear.

[0020] After loading the luggage P on the loading platform C1, hold the sliding ring 3 and pull out the loading belt 1 from the outlet of the belt tightening device 2 against the biasing force of the spiral spring, and slide and adjust the sliding ring 3 so that it is in the middle position with respect to the loading belt 1 stretched between the belt end fixing part 7. The loading belt 1 is folded by this sliding ring 3 to form two rows, and the locking hook 5 is locked to a locking part such as the frame C7 near the left and right center of the rear loading platform C1 at the other end via the second belt 4 fixed to the sliding ring 3. As a result, the locking hook 5 is connected in a Y shape to the loading belt 1 via the second belt 4 at the rear. In this state, the loading belt is locked by the above-mentioned locking mechanism so that it does not expand or contract.

[0021] In this case, if the length of the second belt 4 is made too long and locked, the pulling-out length of the loading belt 1 becomes short, and it is not always possible to sufficiently hold the luggage P with the two rows of loading belts 1. Therefore, for the stability of the luggage P, it is preferable to lock the second belt 4 in a short state.

[0022] However, in a commercially available belt tightening device 2, since the length of the loading belt 1 is limited, if the size of the loaded luggage P becomes too large, the length of the loading belt 1 may be insufficient. As a countermeasure, the second belt 4 may be adopted and its length may be made adjustable in a telescopic manner by a buckle or the like.

[0023] Note that the locking hook 5 can also be directly attached to the sliding ring 3 without passing through the second belt 4. In this way, when the second belt 4 is omitted, as shown in FIG. 4, the locking hook 5 connects the loading belt 1 in a V shape.

[0024] As shown in FIGS. 2 to 4, the loading belt 1 pulled out from the belt tightening device 2 and in a locked state maintains the state of tightening the load P. Meanwhile, as the load P reciprocates between the front part and the rear part of the cart C, the load P is tightened by two rows of loading belts 1 with an interval therebetween, so that it is difficult for the load to collapse. Note that the belt tightening device 2 does not necessarily need to be provided with a locking mechanism. In such a case, a tension is applied to the load P by the biasing force of the internal spiral spring, resulting in a state where tension is applied to the load P.

[0025] In addition, the belt tightening device 2, the sliding ring 3, the second belt 4, and the locking hook 5 may be retrofitted to the existing metal cross member C5, or a cross member with the belt tightening device 2, the sliding ring 3, the second belt 4, and the locking hook 5 attached may be prepared and attached to the existing cart C.

[0026] In FIG. 5, the tip 6 of the loading belt 1 may not be fixed at the position of the belt end fixing part 7 located near the second column part C3', but other positions may be adopted. That is, the loading belt 1 is configured to change direction through a passing part 8 provided, for example, on the cross member C5 near the second column part C3', and the tip 6 of the loading belt 1 is fixed near, for example, the belt tightening device 2. Even in this case, the load P can be tightened by two rows of loading belts 1 as in the previous embodiment.

[0027] Also, in the above-described embodiment, the belt tightening device 2 and the belt end fixing part 7 are retrofitted and arranged on the cross member C5 between the first and second column parts C3 and C3'. However, the belt tightening device 2 and the belt end fixing part 7, or a cross member with the belt tightening device 2, the belt end fixing part 7, and the passing part 8 attached may be prepared in advance, and this cross member may be fixed between the first and second column parts C3 and C3'. Furthermore, it may be directly fixed to the first and second column parts C3 and C3' respectively, or fixed to a mounting member provided near the first and second column parts C3 and C3'.

[0028] In this specification, the words "up and down", "left and right", and "front and back" are used to facilitate the understanding of the drawings, and the present invention is not limited by these words.

[0029] Thus, according to the load collapse prevention device for a carriage according to the invention, since it is possible to stretch and tighten the two rows of loading belts 1 over the load P, it is difficult for load collapse to occur during transportation.

Explanation of Signs

[0030] 1 Belt 2 Belt fastener 3 Sliding ring 4 Second belt 5 Locking hook 6 Tip 7 Belt end fixing part 8 Passage part C Carriage for transportation C3 First pillar part C3’ Second pillar part C4 Holding rod C5 Cross beam part P Load

Claims

1. A load collapse prevention device for a trolley that can be attached to a trolley for transportation, wherein a pair of left and right first and second pillar portions are erected on both sides of one end of a loading platform, and a gripping bar is constructed at the upper ends of these first and second pillar portions. A belt tightening device installed near the first pillar portion and incorporating a retractable load-carrying belt wound therein. A sliding ring slidably inserted through the load-carrying belt fed out from the belt tightening device. Comprising a locking hook directly or indirectly connected to the sliding ring and locking to a locked portion at the other end of the trolley for transportation. The tip of the load-carrying belt is fixed via a passing portion of the load-carrying belt provided near the second pillar portion or is fixed near the second pillar portion. The load collapse prevention device for a trolley is characterized by this.

2. The load collapse prevention device for a trolley according to claim 1, wherein the load placed on the trolley for transportation is tightened by two rows of the load-carrying belts folded back by the sliding ring and a locking hook directly or indirectly connected to the sliding ring with respect to the trolley for transportation.

3. The first and second pillar portions are connected by a cross member, the belt tightening device is arranged near the first pillar portion of the cross member, and the passing portion or the belt end fixing portion is arranged near the second pillar portion of the cross member. The load collapse prevention device for a trolley according to claim 1 or 2 is characterized by this.

4. The load collapse prevention device for a trolley according to claim 1 or 2, wherein the locking hook is indirectly connected to the sliding ring via a second belt.

5. The load collapse prevention device for a trolley according to claim 3, wherein the second belt is adjustable in length.

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