JPH068159Y2 - Temporary stopper for piping of parent-child lift - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a lifting unit of a forklift body (hereinafter referred to as a parent lift) corresponding to a parent lift, and a child lift (hereinafter referred to as a remote control pallet truck) to a lifting member. Parent-child lift with detachable child lift)
More specifically, the present invention relates to a temporary pipe fastener that is effective when connecting pipes on the parent lift side and the child lift side.

(Prior art) A parent-child lift is used for loading / unloading a shipping container, for example.
It is used when unloading, and such a parent-child lift is disclosed in, for example, Japanese Patent Laid-Open Nos. 51-85153 and 55-7181.

Generally, in the parent-child lift, as shown in the schematic diagrams of FIGS. 6 and 7, the child lift 4 is moved up and down along the mast 2 of the parent lift 1 to the lift bracket 3 as an elevating member so that the child lift 4 interposes a hook 5. It is a detachable type that can be suspended. The child lift 4 is provided with a drive unit 7 having an oil motor as a drive source on the main body 6 side, and auxiliary wheels 9 on the leg 8 side corresponding to a fork. Further, although not shown, the drive unit 7 is steered. A power steering cylinder for lifting and a lift cylinder for vertically moving the leg 8 are provided. That is, the child lift 4 itself includes an elevating device, a traveling device, and a steering device for cargo handling work, and by remotely operating each of these devices on the parent lift side, the child lift 4 inside the transport container C is illustrated. Is loaded and unloaded from the container C.

On the other hand, the hydraulic piping for the hydraulic actuator of each of the above devices is provided with a hose reel 12 on the rear side of the head guard 10 of the parent lift 1, and is provided with two hose reels, one for oil supply and one for oil return drawn out from this hose reel 12. The hose 11 is guided to the child lift 4 via a guide pulley 22 arranged above the mast 2, and its end is connected to a hydraulic pipe on the child lift 4 side via a hose coupler. The other end of the hose 11 is connected to the parent lift 1 via a pipe or the like.
Connected to the hydraulic unit.

In addition to the above hydraulic piping, a power supply cable 16 for supplying a control current to, for example, a solenoid valve in the hydraulic piping on the child lift 4 side is wired between the parent lift 1 and the child lift 4. The power supply cable 16 is also pulled out from the cable reel 17 installed on the head guard 10 of the parent lift 1 as in the case of hydraulic piping, and is guided to the child lift 4 via the guide pulley 22 on the mast, and its end is It is connected to a cable on the child lift 4 side via a connector.

(Problems to be solved by the invention) By the way, the parent-child lift may use the child lift as an ordinary forklift by exchanging the child lift with another attachment such as a standard fork. Since the power supply cable is not required, the power supply cable will be held and held in the vicinity of the mast through an appropriate auxiliary tool so as not to get in the way. Then, the hose and the power feeding cable thus hooked up will be re-connected with the piping and the power feeding cable on the child lift side when the child lift is reattached thereafter, that is, when the child lift is used again. In that case, it is necessary to overcome the rewinding force of the hose reel and the cable reel in the connection work of the hose and the power supply cable, that is, the hose or the power supply cable pulled out to the position to be connected must resist the rewinding force. The joining work had to be performed while holding it, and the work required a considerable amount of force, which was very troublesome.

Therefore, in view of the above problems, it is an object of the present invention to provide a temporary stopper for pipes of a parent-child lift, which is effective in reducing the labor of the connecting work when connecting the hose and the power supply cable. To do.

(Means for Solving Problems) The present invention for solving the above problems is a child lift in which a hose or a power supply cable pulled out through a reel and a guide pulley installed in a parent lift is attached to the parent lift. In the parent lift configured to be detachably coupled to the side pipe or wiring and configured to operate the hydraulic actuator or the electric device of the child lift on the parent lift side, to the mast of the parent lift or the pulley bracket attached to the mast, The fact that at least two members for temporarily fixing the hose or the power supply cable against the rewinding force of the reel by the frictional force when the hose or the power supply cable is entangled is installed at a predetermined interval. And

(Function) When connecting the hose or power supply cable on the parent lift side to the piping or wiring on the child lift side, pull out the hose or power supply cable from the reel to the length required for the connection, and then entangle it with the two members facing each other. Then, they are temporarily fixed in place by frictional force. Therefore, the work of connecting the temporarily fixed hose or the power supply cable can be performed without receiving the unwinding force of the reel.

(Embodiment) An embodiment of the present invention will be specifically described below with reference to the drawings. Since the general structure of the parent lift is the same as that of the conventional one, the description thereof will be omitted. Two hoses 11, one for oil supply and one for oil return, are pulled out from a hose reel 12 installed at the upper end of the rear end of the head guard 10 and fixed to the mast, specifically, the upper end of the inner mast 2. A rotary joint 13 which is pulled out to the child lift 4 side through a guide pulley 22 rotatably attached to a pulley bracket 23 and a retaining bar 24, and which corresponds to the end of the hydraulic pipe on the child lift 4 side. It can be connected via the hose coupler 14. The hose coupler 14 is a conventionally known hose coupler of a type in which a so-called male coupler 14a and a female coupler 14b are detached by an inserting / removing operation. In this embodiment, the male coupler 1 is used.
4a is attached to the end of the hose 11, and a female coupler 14b is attached to the rotary joint 13. A stopper rubber 15 is attached to the end of the hose 11 at the root of the male coupler 14a. The stopper rubber 15 has a thickness that cannot pass through the gap between the guide pulley 22 and the retaining bar 24. Is set to.

Further, the power supply cable 16 is pulled out from the cable reel 17 installed on the upper rear end of the head guard 10 as in the case of the hose 11, and passes through between the guide pulley 22 and the retaining bar 24 to the child lift 4 side. The plug 18 attached to the end of the feeder cable 19 on the child lift 4 side is connected to the plug 18 attached to the end of the power supply cable 19. The plug 18 has a thickness that cannot pass through the gap between the guide pulley 22 and the retaining bar 24. Further, the power feeding cable 19 on the child lift 4 side is guided by a curved cable guide 21 with a stopper attached to the body 6.

As shown in FIG. 3, the guide pulley 22 has a three-part structure corresponding to the oil supply and return oil hoses 11 and the power supply cable 16 to reduce the withdrawal resistance (rotational resistance). ing. That is, the guide pulley 22 is formed into a drum shape that is long in the axial direction as a whole, and
Three small pulley parts 22a, 22b, 22 in the axial direction
It is divided into c and each small pulley portion 22a, 22b, 2
The pulleys 2c are individually rotatably supported by pulley shafts 25 horizontally mounted on a pulley bracket 23 via bearings 26, respectively.

Also, of the small pulley parts, the small pulley parts 2 located on both sides
A collar 27 is formed on the outer side of 2a, 22c, and the other portions are not provided with a collar. This is for allowing the hose 11 or the power supply cable 16 to move laterally when the parent-child lift is equipped with a so-called side shift device. Further, the adjacent small pulley portion 22
The a, 22b and 22c have a slight gap due to the collar 28. Further, the pulley bracket 23 is divided at a substantially central portion in the axial direction in order to facilitate the assembling of the small pulley portions 22a, 22b, 22c, and after the assembling of the guide pulley 22, the connecting plate 29 is interposed. Are connected by bolts 30.

Further, as shown in FIG. 4, the pulley bracket 23 has a hose hook 31 and a cable hook 37 for hooking and holding the hose 11 and the power supply cable 16 which are separated from the child lift 4 side. And are installed in parallel. The hose hook 31 includes a vertical plate 32 and a horizontal plate 33 fixed to the vertical plate 32.
Are formed in a cross shape by and the upper end portion of the vertical plate 32 is fixed to the lower surface of the pulley bracket 23 by a bolt 34. At both ends of the horizontal plate 33, a bifurcated hooking portion 35 that horizontally projects toward the front is bent and formed, and the width of the hooking portion 35 is formed to be slightly wider than the hose 11. ing. That is, the stopper rubber 15 of the hose 11 is hooked with the hose 11 fitted in the hooking portion 35 of the lateral plate 33. A holding piece 35a bent downward is provided at the tip of the bifurcated hooking portion 35,
By contacting the front surface of the stopper rubber 15 in the hooked state, the hose 11 is held in the hooked posture.

Further, on the vertical plate 32 of the hose hook 31, two upper and lower engaging pins 36 for temporarily fixing the hose are horizontally projected at a predetermined interval and both engaging pins 36 are provided. The interval is set appropriately according to the thickness and flexibility of the hose 11. That is, the two upper and lower locking pins 36 are attached to the hose 1
When the hose 11 is pulled out, a temporary stopper for temporarily holding the hose 11 in the pulled-out position is formed by utilizing the frictional force when the hose 11 is entangled in a substantially S-shape. Both locking pins 36 in the embodiment are headed pins, and are designed so as not to come off easily when the hose 11 moves forward.

On the other hand, the cable hook 37 is formed in a vertically long plate shape, and the upper end thereof is fixed to the pulley bracket 23 by a bolt 37a. The lower end of the cable hook 37 horizontally protrudes forward. A fork-shaped hooking portion 38 is provided. The groove width of the hooking portion 38 is set to a size through which the power supply cable 16 can pass, and the collar portion 18a of the plug 18 is hooked. Further, the bifurcated hook portion 38 is provided with a downwardly bent holding piece 38a for holding the hooking posture, as in the case of the hose hooking tool 31.

Further, at the position above the hooking portion 38 of the cable hooking device 37, one locking pin 3 with a head is provided for temporarily fixing the cable.
9 is projectingly provided, and the locking pin 39 and the hooking portion 38 below the locking pin 39 constitute a temporary fixing tool for the power supply cable 16.

The present embodiment is configured as described above, and its operation will be described below.

In the state of use as a parent-child lift, the hose 11 and the power supply cable 16 on the parent lift 1 side are connected to the child lift 4 side as shown in FIGS. 1 and 2.

In this state, when the child lift 4 is to be detached from the parent lift 1 in order to replace it with another attachment, the hose coupler 14 of the hose 11 is first separated into the male coupler 14a and the female coupler 14b, that is, separated from the child lift side. Then, as shown in FIG. 4, the stopper rubbers 15 of the hoses 11 are hooked on the corresponding hooking portions 35 of the hooking tool 31 for the hose, respectively. Also, the plug 1 of the power supply cable 16
8 is pulled out from the adapter 20 of the power supply cable 19 on the child lift 4 side, and then hooked to the hooking portion 38 of the cable hooking tool 37. The hose 11 and the power supply cable 16 thus hooked are held in a predetermined tension state by receiving the unwinding force of the hose reel 12 and the cable reel 17, and further, the holding pieces 35a and 38a are moved in the detaching direction. As a result of being restricted, the desired locked state can be maintained even when subjected to vibrations during traveling. The separated male coupler 14a, female coupler 14b, plug 18 and adapter 2 are separated.
Although not shown, 0 is covered with an appropriate cap to prevent dust and rainwater from entering.

When the child lift 4 is reattached, the hose 11 and the power supply cable 16 are separated from the hooking portions 35 and 38, and then the rewinding force of the reels 12 and 17 is overcome to pull it forward and connect to the child lift 4 side. However, according to the present embodiment, this pull-out force is reduced. That is, when pulling out the front hose or cable, in addition to the rewinding force of the hose reel 12 or the cable reel 17, the guide pulley 22
Acts as a pullout resistance, and in the case of a conventional commonly used guide pulley, for example, when the oil supply hose is pulled out, the return oil hose and the oil supply cable serve as the rotation resistance of the guide pulley. The pullout resistance added by the pulley becomes large. However, according to the present embodiment, the guide pulley 22 is divided into three pieces, and the guide pulleys 22 can freely rotate when drawn out. Therefore, the pull-out resistance by the guide pulley 22 is small. In other words, the worker is able to overcome the unwinding force of the hose reel 12 or the cable reel 17 with a force enough to overcome the unwinding force of the hose 11 or hose 11.
Alternatively, the power supply cable 17 can be pulled out.

After the hose 11 is pulled out, the hose coupler 1
4 is connected to the pipe on the child lift side, but the hose 11 is temporarily fixed to the pull-out position by a temporary stopper prior to the connection work. That is, when the hose 11 is entangled with the upper and lower locking pins 36 provided in the hose hook 31 in an S-shape as shown in FIG. 5, the hose 11 is hooked and held in place by frictional force. Therefore, the hose coupler 14 can be coupled in this state. Therefore, the worker can easily perform the connecting work of the hose coupler 14 without being affected by the rewinding force of the hose reel 12. After the coupling, if the hose 11 is detached from the locking pin 36, the hose 11 is stretched to a predetermined tension by the rewinding force of the hose reel 12.

In the case of the power supply cable 16, the power supply cable 16 is pulled out from the cable reel 17 by a predetermined amount, and then the fifth
As shown in the figure, if the locking pin 39 and the hooking portion 8 are entwined in a substantially inverted S shape, the rewinding force of the cable reel 17 does not act on the power supply cable 16 as in the case of the hose 11 described above. Since it is hooked and held in the state, the work of connecting the plug 21 and the adapter 20 can be easily performed in that state.

In this embodiment, two locking pins 36 for temporary fixing are provided on the side of the hose hook 31 and one temporary locking pin 39 for the cable hook 37. However, the number can be appropriately changed, and when the frictional force is insufficient, it can be dealt with by increasing the number.
Further, although the locking pins 36 are arranged vertically in this embodiment,
It does not matter if the structure is arranged in the horizontal direction, and the shape is not limited to the headed pin as shown in the drawing. For example, a taper pin or a square pin with a thick tip may be used as necessary. It is possible to change, and if possible, it is also possible to use two forked parallel facing horizontal pieces which constitute the hooking portion 35.

(Effect of the Invention) As described in detail above, according to the present invention, the hose and the power feeding cable drawn from the reel installed on the parent lift via the guide pulley are connected to the pipe or wiring on the child lift side. In this case, the hose or power supply cable pulled out from the reel is entangled with the temporary stopper, and the hose or power supply cable can be held in place by the frictional force at that time. The hose or the power supply cable can be easily joined without receiving it, which is extremely effective in reducing the labor of the joining work.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, FIG. 3 is a vertical sectional view showing details of a guide pulley, and FIG. FIG. 5 is a perspective view showing a hooking tool and a temporary fastening tool of a power feeding cable, FIG. 5 is a perspective view showing a usage mode of the temporary fastening tool for a hose and a power feeding cable, and FIG. 6 is a schematic side view of a parent-child lift. The figure is also a plan view. 1 …… Parent lift, 4 …… Child lift 11 …… Hose, 12 …… Hose reel 16 …… Supply cable, 17 …… Cable reel 22 …… Guide pulley, 23 …… Pulley bracket 31 …… Hose hook Tool, 36 ... Locking pin 37 ... Hook for cable, 39 ... Locking pin

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Seiji Nishikawa 1 Toyota Town, Toyota City, Aichi Prefecture, Toyota Motor Co., Ltd. (72) Inventor Akira Okura 1 Toyota Town, Toyota City, Aichi Prefecture, Toyota Motor Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A child lift side pipe and wiring attached to the parent lift, which is detachably connected to a hose or a power supply cable drawn out through a reel and a guide pulley installed on the parent lift, and a child on the parent lift side. In a parent-child lift configured to operate a hydraulic actuator or electric equipment of the lift, the hose or the power supply cable is entangled with the mast of the parent lift or the pulley bracket attached to the mast by the friction force when the hose is entangled. Or at least 2 for temporarily fixing the power supply cable against the rewinding force of the reel.
Temporary fasteners for piping etc. of parent-child lifts with members installed at predetermined intervals.