CN1258449C - Bogie dragger - Google Patents

Abstract

This traction implement 13 comprises an upper frame member 23 having the upper hook part 24 hooked to the upper edge 18 of the front wall 16 of a bogie 11; a lower frame member 25 having the lower hook part 26 hooked to the lower edge 19 of the front wall 16; the traction bar 29 connecting with the traction implement mounted to the lower frame member 25. This traction implement detachably mounting a traction bar to the front wall by directly gripping the upper and lower edges of the front wall by upper and lower hook parts.

Description

Trolley towing tool

technical field

The present invention relates to a towing tool which is connected between the trolley and the tractor when a trolley loaded with loads to be transported is towed by a tractor.

Background technique

As such a pulling tool for a trolley, there is known, for example, the "pulling tool for a trolley" disclosed in Japanese Patent No. 3044616, or the "connecting device between pallets" disclosed in Japanese Patent No. 2669292.

The pulling tool in Japanese Patent No. 3044616 connects two trolleys. This pulling means is mounted on the following trolley with respect to the forward direction. The towing tool has a bracket unit with a fulcrum pin rotatably mounted relative to the bracket body, and a tow arm, the tow arm being welded to the fulcrum pin. The connection tool is assembled on the front trolley. Although the towing arm is horizontal when in use, when not in use, it can be stowed in the rear trolley in the upright position. Therefore, obstacles or operators do not collide with the draw arm, so that the carriage unit is not deformed and damaged.

However, the above-mentioned towing arms cannot be disassembled relative to the trolleys, therefore, it is necessary to use a number of towing arms corresponding to the number of trolleys, and these towing arms must be fixed on each trolley.

The trolley connecting device of Japanese Patent No. 2669292 has connected the front and rear cars by the connecting device. A trolley has a lower frame having an L-shaped cross-section at its rear, and the lower frame has a horizontal portion and a rising portion. On the standing portion, left and right connecting tools are fitted at positions separated in the width direction of the trolley. In these connection tools, the bottom end of the V-shaped drawbar is rotatably and detachably connected. The other trolley has a lower frame having an L-shaped cross-section at its front, and the lower frame has a horizontal portion and a rising portion. A connection tool is mounted on the upright portion. A vertically extending rod-shaped combined portion is provided on the connecting tool. The top end of the aforementioned draw bar can be combined with or disengaged from the combined part, and the two trolleys can be easily connected together through the detachable draw bar.

The above tow bar is detachable. However, in the above connecting device, a lower frame having an L-shaped cross section having a standing portion is necessary, and the standing portion must be fixed to each of the carts 1 . Since such a standing portion is provided, a special structure of the trolley is formed, and the manufacturing cost of the trolley is increased.

Summary of the invention

The invention provides a trolley pulling tool capable of reducing the manufacturing cost of the trolley.

In the present invention, there is provided a towing tool for towing a trolley of a trolley, wherein the trolley has a bed and at least a front wall on the bed, the towing tool is provided with an upper frame member having Hanging on the upper hook portion arranged on the upper edge portion of the upper edge of the front wall; the lower frame member having a lower hook portion hung on the lower edge portion arranged on the lower edge of the front wall; formed on the upper frame member and the lower frame member A long hole on any one of them; a coupling tool, which passes through the long hole and slidably combines the upper and lower frame members; and a traction member assembled on the lower frame member.

The upper and lower frame members slide through the long holes, and the upper and lower edge members of the trolley are directly hooked by the upper and lower hooks, so that the traction member can be detachably attached to the front wall. When removing the towing unit, the towing tool is removed from the trolley by sliding it in a direction that moves the upper and lower frame members away from the installation, opposite to the installation. That is, it is not necessary to perform processing on a pallet, and at the same time, one pulling tool can correspond to various types of pallets with different heights, so that the manufacturing costs of the pallet and the pulling tool can be reduced.

The traction tool of the present invention is provided with a centering part perpendicular to the upper frame part or the lower frame part, and the centering part has a left frame part and a right frame part, wherein the left frame part has a A left hook on the left edge of the wall, and the right frame member has a right hook that hangs on the right edge of the front wall. In short, by directly hooking the left and right side edges of the trolley directly with the left and right hooks, the lower frame member can be assembled at the left and right centers of the front wall, thereby simply fixing the pulling tool at the center position.

The traction member of the present invention has a traction plate that is swingably attached to the lower frame member. Therefore, when the tow tool is removed from the trolley, the board can be folded parallel to the lower frame member after standing up, so that the tow tool can be stored compactly.

Brief description of the drawings

FIG. 1 is a view showing a state of use of a towing tool of a trolley related to the present invention and a state in which the towing vehicle and the trolley are connected by the towing tool.

FIG. 2 is an oblique view of the pulling tool shown in FIG. 1 .

FIG. 3 is an exploded perspective view of the pulling tool shown in FIG. 2 .

Fig. 4 is a partial view showing a state where the upper hook portion of the upper frame member is hung on the upper edge portion, and the lower hook portion of the lower frame member is hung on the lower edge portion.

Fig. 5 is a view showing a state where the pulling tool of the present invention is removed from the dolly.

Best Embodiment for Carrying Out the Invention

FIG. 1 shows a state in which a trolley 11 and a tractor 12 are connected by a traction tool 13 of the present invention.

The trolley 11 has a chassis 14 . Chassis 14 is provided with carriage 15, and a plurality of self-aligning wheels 15a installed on the lower surface of carriage 15 stand upright on front wall 16 of carriage 15 front. The front wall 16 has a plate 17, an upper edge portion 18 mounted on the upper edge of the plate 17, a lower edge portion 19 mounted on the lower edge, a left edge portion 21 mounted on the left edge and as shown in FIG. Right edge piece 22 installed on the right edge.

The tractor 12 is, for example, a forklift. The tractor 12 has at its rear a connection part 12a consisting of a lug 12b and a pin 12c. The tractor 12 is connected to the trolley 11 by passing the pin 12c through the drawbar 29 to tow the trolley 11 .

As shown in FIGS. 2 and 3 , the pulling tool 13 has an upper frame member 23 , a lower frame member 25 , a coupling tool 28 , a pulling member 29 and a centering member 31 . The upper frame member 23 has an upper hook portion 24 hooked on the upper edge portion 18 of the front wall 16 . The lower frame member 25 has a lower hook portion 26 hung on the lower edge portion 19 of the front wall 16 . The lower frame member 25 has a long hole 27 formed to extend vertically. The coupling tool 28 connects the upper frame member 23 and the lower frame member 25 through the elongated hole 27 . The drawbar 29 can be either laid down horizontally or erected vertically and is mounted on the lower frame member 25 in a freely rotatable manner. The centering member 31 is mounted on the lower portion of the lower frame member 25 . The upper frame member 23 and the lower frame member 25 are installed so as to slide up and down each other, and are freely adjustable in a telescopic manner.

As shown in FIGS. 2 and 3 , the upper frame member 23 has a flat upper frame main body 32 . The upper frame body 32 has an upper hook portion 24 at its upper end portion 32a, two sliding pins 33, 34 spaced up and down at its central portion, and a fixing pin 35 at its lower end portion 32b.

The lower frame member 25 has a lower frame main body 36 having an L-shaped cross section. The lower frame main body 36 has a lower hook portion 26 at its lower end portion 36a, and has a long hole 27 formed from the upper end portion to the center portion and into which the aforementioned slide pins 33, 34 are fitted. Lh is the installation height of the traction tool 13 relative to the trolley 11 , and the installation height Lh can be adjusted by the connection tool 28 according to the height of the trolley.

The coupling tool 28 is provided with a support shaft 37 , a stopper plate 38 , a spring 39 , a first coupling part 41 , and a holding member 42 . The support shaft 37 is provided on the lower frame member 25 . The stopper plate 38 is attached so as to be able to swing freely around the support shaft 37 . A spring 39 is fitted between the stopper plate 38 and the lower frame member 25 and pushes the upper end portion of the stopper plate 38 so as to be rotatable in the direction of the lower frame member 25 . The first coupling member 41 is provided on the lower frame member 25 so as to couple with one end of the spring 39 . A holding member 42 is mounted on the lower frame member 25 so as to sandwich the stopper plate 38 together with the lower frame member 25 .

As shown in FIG. 3 , the two sliding pins 33 and 34 and the fixing pin 35 protrude toward the lower frame member 25 so as to fit into the long holes 27 formed in the lower frame member 25 on the upper frame member 23 . The upper frame member 23 has a first grip portion 48 protruding in a direction opposite to the direction in which the pins 33 , 34 , and 35 protrude.

The traction element 29 shown in FIG. 2 has a plate 43 . The plate 43 has a sleeve 44 formed at its bottom end 43a. The sleeve 44 is mounted on a hinge 45 via a pin 44a. The hinge 45 is fixed to the lower frame member 25 . The plate 43 is supported by the lower frame member 25 so as to be vertically swingable around the pin 44a of the hinge 45 as indicated by the arrow ①. In addition, the plate 43 has an insertion slot 46 formed in a substantially central portion, and has a connection hole 47 formed in a top end portion 43b thereof for connecting to the pin 12c shown in FIG. 1 .

The stopper plate 38 has a holding portion 51 fitted between the holding member 42 and the lower frame member 25, a plurality of fixing recesses 52 formed at predetermined intervals in the longitudinal direction for coupling with the fixing pin 35, so that the stopper plate 38 can be The fulcrum hole 53 that is freely supported on the support shaft 37 so that the support shaft 37 can be inserted through, the second coupling member 54 at the other end of the coupling spring 39 , the second gripping portion 55 and the third gripping portion 56 .

In the embodiment, the plurality of fixing recesses 52 include four recesses of a first recess 52a, a second recess 52b, a third recess 52c, and a fourth recess 52d. These 1st - 4th recessed parts 52a-52d are formed in the predetermined pitch P so that adjustment is possible, and the installation height Lh of the traction tool 13 can be kept substantially the same as the trolley which has a different height.

The centering member 31 is attached to the lower frame member 25 so as to extend in the vehicle width direction of the bogie 11 shown in FIG. 2 . In any case, the centering member 31 is mounted vertically to the lower frame member 25 . The centering part 31 is provided with a base 61, and the base 61 has guides 62, 63; a left frame member 64 and a right frame member 65 which are freely slidably arranged on the base 61; Pinion 66 between left and right frame members 64,65. Lw is the width at which the centering member 31 is attached to the trolley 11 shown in FIG. 2 , and can be adjusted.

The left frame member 64 has a left rack 71 and a left hook 72 , wherein the left hook 71 is formed at the left end of the left rack 71 so as to be combined with the left edge 21 of the trolley 11 shown in FIG. 2 . The right frame member 65 has a right rack 73 and a right hook 74 , wherein the right hook 74 is formed at the right end of the right rack 73 so as to be combined with the right edge 22 of the trolley 11 shown in FIG. 2 . The pinion 66 is located at the center of the centering member 31 , and by rotating the pinion 66 to the right or left, the left frame member 64 and the right frame member 65 expand and contract to adjust the installation width Lw of the centering member 31 . Although not shown in the drawings, a stopper, such as a lock pin, for limiting the installation width Lw to a desired width dimension may be provided.

As the stopper plate 38, although an example of using a spring 39 composed of a compression spring was given, a tension spring may also be used. At this time, the support shaft 37 is provided at the lower position of the tension spring, and the pivotal center position of the stopper plate 38 should be changed.

Next, the assembly sequence of the traction tool 13 will be described according to FIG. 3 .

First, the sliding pins 33, 34 and the fixing pin 35 of the upper frame member 23 are inserted into the long holes 27 of the lower frame member 25, and the cotter pins 76, 76 are mounted on the sliding pins 33, 34 through the washers 75, 75. Therefore, the upper frame member 23 and the lower frame member 25 are connected together so as to be movable up and down. After fitting the support shaft 37 into the fulcrum hole 53 of the stopper plate 38 , the cotter pin 78 is attached to the support shaft 37 via a washer 77 . Next, the spring 39 is fitted between the first coupling member 41 and the second coupling member 54 . Finally, the pulling member 29 and the centering member 31 are fixed to the lower end portion 36a of the lower frame member 25 by welding.

The usage method of the above traction tool will be described according to FIG. 2 , FIG. 4 and FIG. 5 .

As shown in Figure 2, when the traction tool 13 is installed on the trolley 11, the first gripping part 48 and the second gripping part 55 should be held respectively, and the fixed concave part 52 of the stop plate 38 shown in Figure 3 , to overcome the resilience of the spring 39 and make the second gripping portion 55 swing in the direction of arrow ②, so that the fixing recess 52 of the stop plate 38 shown in FIG. 3 is not combined with the fixing pin 35 . In this state, the upper hook portion 24 of the upper member 23 is hung on the upper edge portion 18 of the trolley 11 , and the lower hook portion 26 of the lower frame member 25 is hung on the lower edge portion 19 . Then, the hand is separated from the second grip portion 55, whereby the stopper plate 38 slides in the direction of arrow ③ around the support shaft 37 by the elastic force of the spring 39, and the fixed concave portion 52 shown in FIG. Pin 35 is combined. Thereby, vertical movement of the upper frame member 23 and the lower frame member 25 is prevented. In this embodiment, the second concave portion 52b of the stopper plate 38 is engaged with the fixing pin 35 . When the heights of the trolleys 11 are different, the joint positions of the plurality of fixing recesses 52 and the fixing pins 35 can be changed, so that one traction tool 13 can correspond to various kinds of trolleys with different heights.

The left and right hooks 72, 72 of the left and right frame members 64, 65 of the centering member 31 are respectively hung on the left and right side edge members 21, 22, so that the drawbar 29 is assembled in the vehicle width center of the trolley 11, that is, the assembly width Lw at the center of. Therefore, centering of the pulling tool 13 can be performed simply.

The state shown in FIG. 4 is: the upper hook portion 24 of the upper frame member 23 is hung on the upper edge member 18, and the lower hook portion 26 of the lower frame member 25 is hung on the lower edge portion 19.

In this way, since the upper hook portion 24 is formed on the upper frame member 23 and the lower hook portion 26 is formed on the lower frame member 25, the upper and lower frame members 23, 25 can be directly assembled on the upper edge and the lower edge of the trolley 11. rims 18, 19, and the traction member 29 can be assembled on the trolley 11. As a result, it is not necessary to assemble dedicated parts for traction on the trolley 11, so that the manufacturing cost of the trolley can be reduced.

FIG. 5 shows a state in which the pulling tool 13 is detached from the trolley 11 .

In this way, when the towing tool 13 is disassembled, the disassembly can be performed in the reverse order of the assembly of the towing tool 13 . In short, the left and right frame members 64, 65 of the centering member 31 can be extended. At this time, the pinion gear 66 shown in FIG. 3 is rotated in a direction in which the left and right frame members 64, 65 are separated. The left and right hook portions 72, 74 are removed from the left and right side edge members 21, 22 shown in Fig. 2 . The stopper plate 38 is rotated in the direction indicated by arrow ④ around the support shaft 37 to remove the fixing recess 52 coupled with the fixing pin 35 . As indicated by arrow ⑤, the pulling tool 13 can be detached from the trolley 11 by sliding the upper frame member 23 upward and the lower frame member 25 downward.

In this way, since the entire traction tool 13 can be detached from the dolly 11, the detached towing tool 13 can be mounted on another trolley as described above.

As described above, the towing tool 13 of the trolley 11 of the present embodiment does not need to install components for towing on the trolley 11, and therefore, the manufacturing cost of the trolley can be reduced.

After detaching the traction tool 13 from the trolley 11, the plate 43 of the traction member 29 is erected as indicated by arrow ①. In this way, since the plate 43 for traction is assembled on the lower frame member 25 so as to be rotatable left and right, when the traction tool 13 is detached from the trolley 11, the plate 43 is erected, and then, as double-dotted line As shown by the line, the plate 43 is folded parallel to the lower frame member 25, whereby the towing tool 13 is compacted.

In the present embodiment, as shown in FIG. 3, although an example in which the elongated hole 27 is formed in the lower frame member 25 has been given, in the present invention, it should not be limited thereto, and may also be formed in the upper frame member 23. A long hole 27 is formed on it.

In this embodiment, as shown in Figure 1, although the example of using the plate 17 as the front wall 16 has been given, in the present invention, it should not be limited to the plate 17, and the plate 17 can also be changed, using wire Nets, grilles and other components.

In this embodiment, although the example of using the traction tool 13 between the trolley 11 and the tractor 12 is given, it should not be limited to this, and it can also be used between two trolleys 11. Connection. At this time, two pulling tools 13 may be prepared, and the pulling member 29 of one pulling tool 13 may be changed to the pin 12c shown in FIG. 1, and the pulling member 29 of the other pulling tool 13 may be hung on the pin 12c.

Claims (3)

1. A traction tool for a trolley, for towing a trolley, wherein the trolley has a carriage and at least a front wall on the carriage, the traction implement is provided with: The upper frame member has an upper hook portion hung on the upper edge portion arranged on the upper edge of the front wall; a lower frame member having a lower hook portion hung on a lower edge portion disposed on a lower edge of the front wall; an elongated hole formed in any one of said upper frame member and lower frame member; a bonding tool passing through the elongated hole and slidably bonding the upper and lower frame members; Towing components assembled on the lower frame members. 2. The traction tool according to claim 1, characterized in that: it is also provided with a centering member perpendicular to the upper frame member or the lower frame member, the centering member having a left frame member and a right frame member The left frame part has a left hook part hung on the left edge of the front wall, and the right frame part has a right hook part hung on the right edge part of the front wall. 3. The towing tool according to claim 1, wherein the towing member has a towing plate which is swingably mounted on the lower frame member.

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