JPH11263599A - Detaching/fitting device for attachment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a detaching/fitting device of an attachment in which detaching/fitting from/to a forklift is easy, and the mounting condition can be insured. SOLUTION: A cleaning vehicle is provided with a side member 1 capable of being inserted with a fork 23. To the side part on the fork insert side of the side member 1, a latch tool 15 of nearly U-shape is vertically rotationally fitted, and on the upper face side, a stopper 19 contacted with the front face of the bent of the fork 23 to regulate the insert depth is provided. The latch cylindrical body 15c of the latch tool 15 is latched on the back of the bent part of the fork 23 inserted into the side member 1 to fix the side member 1 to the fork 23. A tension spring 16 is provided so that the tension is vertically turned over relative to the latch tool 15 setting a dead point DP as the boundary to hold the latch tool 15 on the turning displacement position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attachment detaching device for removably attaching an attachment used for various operations to a forklift, which is added to or replaced by a forklift cargo handling device.

[0002]

2. Description of the Related Art Forks and attachments used in conventional cargo handling operations are mounted on forklifts in the form shown in FIG. (A) is a type in which a fork 32 is hooked on a lift bracket 31 that moves up and down along a mast by a pair of upper and lower hooks 33, and (b) is a hook 35 in which another attachment 34 is attached to the lift bracket 31 instead of the fork 32. (C) shows a sheath fork 37 and a fork 32
Is inserted, and a stopper pin 38 is inserted into the end of the insertion port of the sheath fork 37 to be hooked on the rear surface of the bent portion of the fork 32, thereby fixing the sheath fork 37 to the fork 32. With other pins.

[0003]

The attachment type of the attachment 34 is the most common type of the attachment type described above, but in this case, the fork 32 is detached from the lift bracket 31 before the attachment type. Since the attachment 34 is attached to the lift bracket 31, there is a problem that it takes time to attach and detach the attachment 34. On the other hand, since the form (c) is attachment to the fork 32,
The attachment / detachment is relatively easy as compared with (b), but in addition to the insertion / removal of the retaining pin 38, it is necessary to perform work for preventing the retaining pin 38 from coming off, There is a problem that the locking pin 38 may fall off unexpectedly.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide an attachment which can be easily attached to and detached from a forklift, and which can securely fix the attached state. An object of the present invention is to provide a desorption device.

[0005]

To achieve the above object, the present invention is configured as follows. That is, the invention of claim 1 is an attachment and detachment device,
The fork is provided with a fork pocket portion into which the fork can be inserted, and the fork pocket portion or a member integrated with the fork pocket portion is forked by being hooked on a fork inserted into the fork pocket portion. And a locking member that is rotatable and displaceable by manual operation at a fixed position for fixing the fixing member and a fixing releasing position for releasing the fixing, and holding the locking member at the fixed position or the fixed releasing position. A holding means is provided.

According to the first aspect of the present invention, after the fork is inserted into the fork pocket, the hook is manually displaced to the fixed position to be hooked on the fork. Thus, the attachment can be attached to the forklift, and the attachment can be removed from the forklift by removing the fork from the fork pocket portion after releasing the fixation to the fork by pivotally displacing the latch to the fixing release position. That is, according to the first aspect of the present invention, the work of attaching and detaching the attachment to and from the forklift can be performed easily and quickly. Then, the hook that has been rotated and displaced by hand is securely held at the fixed position by the hook holding means, so that accidental dropping of the attachment from the fork can be prevented during the work with the attachment.

According to a second aspect of the present invention, in the attachment / detachment device according to the first aspect, the hook is formed by a substantially U-shaped member or a substantially L-shaped member which can be hooked on a back surface of a fork inserted into the fork pocket portion. And a line connecting the engaging portion and the rotation center is set substantially parallel to the fork insertion line. According to the second aspect of the present invention, it is not necessary to perform special processing on the fork side, and it is possible to provide a latch having a simple structure, and furthermore, it is possible to provide a hook in a pulling-out direction of the fork. Since the force can be prevented from acting as a force for rotating the hook, the holding force of the hook by the hook holding means can be small.

According to a third aspect of the present invention, in the attachment / detachment device according to the first or second aspect, the hook holding means is connected at one end to the fork pocket side with the rotation fulcrum of the hook held therebetween. The other end is constituted by a spring connected to the hook, and the urging force of the spring against the hook is such that when the hook is rotated, the connecting portion with the hook is connected to the fork pocket. It is provided so as to be reversed on the extension of a straight line connecting the connecting portion with the section side and the rotation center of the hook. According to the third aspect of the present invention, since the urging force of the spring always acts as a holding force for holding the hook at the displaced position, the hook is irrespective of the swing of the forklift during traveling. Can be held at a fixed position hooked on the fork to prevent the fork from falling off.

According to a fourth aspect of the present invention, in the attachment / detachment device according to any one of the first to third aspects, the attachment is attached to a fork pocket portion or a member integrated with the fork pocket portion, and is inserted into the fork pocket portion. A stopper for regulating the insertion depth of the fork by contacting the front surface of the fork is provided, and the stopper is configured to be adjustable in position in the insertion direction of the fork. According to the fourth aspect of the present invention, since the position of the stopper can be adjusted according to the thickness of the fork inserted into the fork pocket portion, there is no play even when the fork thickness is different. Can be fixed.

According to a fifth aspect of the present invention, in the attachment / detachment device according to any one of the first to fourth aspects, the attachment includes a frame provided with a driven wheel and a cleaning brush provided on the frame. It is characterized by being a cleaning car equipped with. Therefore, according to the fifth aspect of the present invention, the floor can be cleaned by mounting the cleaner on the forklift and traveling through a factory or a warehouse.

According to a sixth aspect of the present invention, in the attachment / detachment device according to the fifth aspect, the hook is configured to be extendable and contractable, and the extended length is determined by the distance from the center of rotation to the lower surface of the driven wheel. Is also set to be long so that it can be used as a stand when the cleaning car is retracted in a state where it is rotated and displaced to the fixing release position. In such a configuration, when the cleaning car is removed from the fork and stored, the cleaning tool is stably stuck in a state where the driven wheel floats from the floor by using the latching tool as a stand of the cleaning car. In addition to being able to be stored, it is possible to prevent the cleaner from moving when the fork is inserted, and to improve the fork insertion.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. This embodiment is directed to a cleaning car used for cleaning the floor of a factory or a warehouse as an attachment mounted on a forklift.
Is a side view of the cleaning car. The cleaning car according to the present embodiment includes left and right side members 1 extending parallel to the front-rear direction as constituent members of a frame, and the left and right side members 1 have rectangular cross sections or open ends on the lower surface side. It is formed in a V-shaped cross section and constitutes a fork pocket portion for inserting a fork of a forklift. That is, the cleaner is mounted on the forklift by inserting an L-shaped fork 23 mounted on a lift bracket 24 that can be moved up and down along the mast of the forklift into the side member 1 as shown by an imaginary line in the drawing.

The left and right side members 1 are connected to each other by a brush box 2 having an open bottom at the center lower surface, connected to each other by a tie beam 3 at the rear lower surface, and soared at the front upper surface during cleaning work. The filters are connected to each other by a filter box 4 provided for suctioning fine dust, thereby securing a required frame strength. In the brush box 2, the main brush 5 is accommodated in a state where the axial direction is the vehicle width direction and the lower side is exposed from the lower surface of the box, and both end shafts are rotatably supported by the box side wall. ing. The tie beam 3 has both left and right ends suspended downward, and a rear wheel 7 is rotatably mounted on an axle 6 provided at the left and right suspended parts.

Below the front part of the side member 1, that is, below the filter box 4, a dust collection box 8 for collecting dust swept by the main brush 5 is arranged. Has a dust collecting port 8a with a rubber lip 8b for dust guide on the rear surface.
The dust collection box 8 has a front end upper portion rotatably attached to the front end portions of the left and right side members 1 via pins 9, and a dust collection position where the dust collection port 8 a has a substantially horizontal shape. The dust port 8a is rotatable and displaceable to a dust disposal position where the dust port 8a faces downward.

That is, when the cleaner is placed on the floor, the dust collecting box 8 is provided on the caster 1 provided on the bottom of the box.
The dust collection port 8a is pivotally displaced to the dust collection position facing the main brush 5 by setting the reference numeral 0 on the floor, and is always held at the dust collection position by a hooking means (not shown). When the dust collection box 8 lifts the fork 23 and lifts the cleaner from the floor and releases the holding by the latching means, the dust collection box 8 is rotated by its own weight to the dust disposal position where the dust collection port 8a is directed downward. The return to the dust collecting position after the dust is discarded is performed by being pushed up by the casters 10 when the fork 23 is lowered and the cleaner is lowered onto the floor. Note that an opening is provided on the upper surface of the dust collection box 8, and the opening communicates with the filter box 4 at the dust collection position.

Further, a side brush 11 for collecting dust in the front in the traveling direction toward the center is provided in front of the right hand of the cleaner.
It has. The side brush 11 is rotatably attached to a tip end of a brush support arm 12 rotatably attached to a front end of the side member 1 via a rotating shaft 13 extending in a vertical direction, and is always in contact with the floor surface. The brush support arm 12 is manually placed when not in use.
It is configured to be able to jump up together.

In this embodiment, although not shown, the rotational force of the rear wheel 7 that is driven and rotated when the cleaning truck is pushed down by a forklift with the cleaning truck lowered on the floor surface is omitted. By transmitting the power to the main brush 5 and the side brush 11 via an appropriate power transmission means such as a chain type or belt type transmission mechanism or a gear type increase / decrease gear,
They are configured to be driven to rotate. Further, a filter unit is accommodated in the filter box 4, and the dust blown up by the sweeping of the main brush 2 is sucked through the upper opening of the dust collection box 8 by the dust collection blower to be filtered. The dust suction blower is also driven using the rotation of the rear wheel 7 in the same manner as the brush. The entire upper surface of the frame including the power transmission means and the dust suction blower and the like is covered by a body cover 14 provided on the upper portion of the side member 1 so as to be detachable or openable.

Next, a description will be given of a detachable device for a forklift of the cleaner constructed as described above with reference to FIGS. 2 and 3. FIG. A substantially U-shaped hook 15 for fixing the side member 1 to the fork 23 is provided on a side surface of the left and right side members 1 as fork pockets into which the fork 23 is inserted, on the side of the fork insertion port. I have. The hook 15 is provided between a pair of left and right arms 15a, one end of which is attached to both side surfaces of the side member 1 by pins 15e so as to be rotatable in the vertical direction and extends rearward, and a free end of the arm 15a. Hook pin 15b
And a latching cylinder 15c rotatably fitted to the latching pin 15b, and a turning operation handle 15d protruding laterally on one side of the arm (outside the vehicle).

When the hook 15 constructed as described above is rotated upward, the side member 1 is fixed to the fork 23 by the hook cylindrical body 15c being hooked on the back surface of the bent portion of the fork 23. At the time of rotation, the hook is released and the fixing is released. That is, the hook 15 is displaced to the fixed position by the upward rotation, and is displaced to the fixed release position by the downward rotation. In the fixed position, the hook 15 is set so that the straight line connecting the center of rotation and the hooked portion is substantially horizontal in parallel with the fork. This prevents the stopper 15 from acting as a turning force in the release direction.

Further, the side member 1 is provided with a tension spring 16 as a hook holding means for holding the hook 15 in the fixed position and the unlocked position. This tension spring 1
6 is a pin 17 protruding from the side surface of the side member 1,
The end is connected to a pin 18 protruding from the side surface of the arm 15a of the hook 15 and is erected. When the hook 15 is rotated and displaced, the connection between the side member 1 and the hook 15 The mounting positions of the pins 17 and 18 are set such that the direction of action of the pulling force is reversed with respect to an extension of a straight line connecting to the rotation center (hereinafter referred to as a dead point).

The fork 23 is inserted into the side member 1 by contacting the upper surface of the side member 1 on the fork insertion side.
A stopper 19 for regulating the insertion depth of No. 3 is provided via a seat plate 21. The stopper 19 is formed in a shape having a triangular rib 19b for reinforcement at the center of the upper surface of the L-shaped plate, and a rubber plate 20 as a cushioning elastic body is fixed to an upright surface facing the front surface of the bent portion of the fork 23. . The stopper 19 is placed on a seat plate 21 having a flat surface portion fixed to the upper surface of the side member 1 and a screw hole 21a of the seat plate 21 is passed through two parallel long holes 19a provided in the flat surface portion. Bolt 19 screwed into the long hole 19
It is fastened so that the position can be adjusted in the direction of insertion of the fork within the range of a.

The detachable device for a cleaning car according to the present embodiment is constructed as described above, and when stored after being removed from the forklift, the hook 15 pivots downward as shown by the phantom line in FIG. And the state is held by, for example, an appropriate stopper member (or a free state of a tension spring) not shown. Therefore, when the cleaning truck is mounted on the forklift, the fork 23 is inserted into the left and right side members 1 until the front surface of the bent portion comes into contact with the rubber plate 20 of the stopper 19, and then the hook 15 is turned upward. If it moves, the locking cylinder 15
c is hooked on the back surface of the bent portion of the fork 23 as shown by the imaginary line in FIG. 2. At this time, since the hook cylinder 15c is rotatably attached to the hook pin 15b, the hook cylinder 1
5c is hung while rolling on the back surface of the fork 23, and the hooking action is performed smoothly.

Thus, the left and right side members 1 are fixed to the fork 23 while being sandwiched from the front and rear by the stopper 19 and the hook 15. In this case, since the hook 15 is hung in a substantially horizontal state parallel to the fork 23, the force in the direction in which the fork 23 comes off acts on the hook 15 as a rotational force in the release direction. Tension spring 1 whose action direction is reversed around the dead point DP
6 acts in the direction in which the latch 15 is latched, so that the fixed state is reliably maintained. Therefore, during the cleaning operation, the safety of the operation can be ensured by preventing the cleaning vehicle from being detached from the forklift. In the present embodiment, since the position of the stopper 19 is adjustable, the thickness of the fork inserted into the side member 1 (of the upright portion)
Is different, that is, even for different forklifts of each vehicle, it is possible to fix the forklift without rattling by adjusting the distance between the stopper 19 and the hook 15 in accordance with the fork thickness.

After the cleaning truck is mounted on the forklift in this manner, the forklift is driven to travel in a factory or a warehouse, and the main brush 5, the side brush 11, the dust-blowing blower is utilized by using the rotational force of the rear wheel 7. The floor can be cleaned by rotationally driving the like. On the other hand, after the cleaning operation, when removing the cleaning vehicle from the forklift, the cleaning vehicle is lifted by the fork 23, transported to a place where it should be stored, the cleaning vehicle is lowered to the floor, and the hook 15 is lowered. Then, the fixing of the side member 1 to the fork 23 is released by releasing the locking cylinder 15 c from the back surface of the fork 23. Thereafter, the cleaning car can be removed by removing the fork 23 from the side member 1.

As described above, according to the present embodiment, the cleaning truck as an attachment is attached to and detached from the fork 23, so that it can be attached and detached as compared with the attachment to the lift bracket which is a member for attaching the fork. The work can be performed easily and quickly, and the fork 23
Can be fixed and released by a very simple one-touch operation of simply rotating the latch 15 upward or downward. In addition, since the hook 15 is formed in a substantially U-shape and is hooked on the back of the fork 23, it is not necessary to perform special processing on the fork 23, and the hook 15 having a simple structure can be used. Since the force in the direction in which the fork 23 comes off does not act as a force for rotating the hook 15, the holding of the hook 15 by the tension spring 16 as the hook holding means can be provided. The force, ie, the spring force, is small, and therefore the presence of the tension spring 16 is
Does not hinder the turning operability.

It should be noted that the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist of the invention. For example, as shown in FIG. 4, the arm 15 a, which is a constituent member of the hook 15 described in the embodiment, has a two-stage or three-stage telescopic structure including a plurality of arms. When fixing,
The hook 15 is used in a reduced state, and the cleaner is
When retracted and stored, it may be in an extended state, and may be turned to a substantially upright posture position as a fixed release position shown by a solid line in the figure to be used as a stand for a brake of a cleaning car. That is, when the attachment is a cleaning car, since the attachment has the wheels 7 and 10, it is highly likely that the attachment moves when the fork 23 is inserted in the stowed state or when attached to the fork 23. Accordingly, the movement of the cleaning car can be regulated by using the hook 15 as a brake stand and holding the rear wheel 7 in a floating state from the floor surface. However, in this case, the length of the hook 15 when extended is set to be longer than the distance from the rotation center of the hook 15 to the lower surface of the rear wheel 7, and in order to fix the hook in the extended state and the contracted state, For example, a locking means of a type in which a lock pin or a bolt 25 is fixed by replacing it with a pin hole 26 is provided.

In the present embodiment, the hook 15 is formed in a substantially U-shape. However, the present invention is not limited to this. For example, it may be changed to a simpler L-shaped structure. May be set at locations other than the back of the bent portion. Further, a tension spring is used as a means for holding the hook 15 at the fixed position and the unlocked position. Instead, for example, a torsion spring is used as the holding means at the fixed position, and a hook is used as the holding means at the unlocked position. It is also possible to use a latch comprising a pin and a pin, or to employ a compression coil spring. Further, the present invention may be implemented in a form in which the stopper 19 for regulating the insertion depth of the fork 23 is omitted. Further, in the present embodiment, the case where the attachment is a vacuum cleaner is described, but the present invention is not limited to this, and any attachment that is used by being attached to the fork 23 can be applied.

[0028]

As described in detail above, according to the present invention,
Since attachment and detachment work of the attachment to the forklift can be performed easily and quickly, and the attachment can be securely fixed to the mounting position on the fork,
During work with the attachment, accidental dropping of the attachment from the fork can be prevented, and work safety can be achieved.

[Brief description of the drawings]

FIG. 1 is a side view of a cleaning car mounted on a fork of a forklift.

FIG. 2 is a side view showing a detachable device of the cleaning car.

FIG. 3 is a plan view of the same.

FIG. 4 is a schematic explanatory view showing a modification example of a hook.

FIG. 5 is an explanatory view showing an example of mounting on a conventional forklift; FIG. 5 (a) shows an example of mounting a fork;
Shows a typical attachment example of the attachment, and (c) shows an attachment example of the sheath fork.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Side member 15 ... Hook 15a ... Arm 15b ... Hook pin 15c ... Hook cylinder 16 ... Tension spring 19 ... Stopper

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI E01H 1/05 E01H 1/05

Claims (6)

[Claims] The fork is provided with a fork pocket portion which can be inserted, and the fork pocket portion or a member integrated with the fork pocket portion is hooked on a fork inserted into the fork pocket portion. A locking member that can be rotated and displaced by manual operation is provided at a fixing position for fixing the fork pocket portion to the fork and a fixing releasing position for releasing the fixing, and the locking member is moved to the fixing position or the fixing releasing position. An attachment / detachment device having an attachment holding means for holding. 2. A hooking device comprising a substantially U-shaped member or a substantially L-shaped member which can be hooked on a back surface of a fork inserted into a fork pocket portion, and connects the hooking portion to a rotation center. The attachment / detachment device according to claim 1, wherein the wire is set to be substantially parallel to the fork insertion wire. 3. The hook holding means is constituted by a spring having one end connected to the fork pocket side and the other end connected to the hook with the pivot point of the hook interposed therebetween.
The biasing force of the spring against the hooking tool connects the connecting portion with the hooking tool side to the connecting portion with the fork pocket portion and the center of rotation of the hooking tool when the hooking tool rotates. The attachment / detachment device according to claim 1 or 2, wherein the attachment / detachment device is provided so as to be inverted on a straight extension line. 4. A stopper attached to the fork pocket portion or a member integrated with the fork pocket portion, the stopper being provided to contact the front surface of the fork inserted into the fork pocket portion, thereby restricting the insertion depth of the fork. The attachment / detachment device according to any one of claims 1 to 3, wherein the stopper is configured to be adjustable in position with respect to a fork insertion direction. 5. The attachment / detachment device according to claim 1, wherein the attachment is a cleaning vehicle including a frame having a driven wheel and a cleaning brush provided on the frame. 6. The hooking device is configured to be extendable and contractable.
6. The extended length is set to be longer than the distance from the center of rotation to the lower surface of the driven wheel, and can be used as a stand when retracting the cleaner in a state of being rotationally displaced to the fixed release position. Attachment desorption device.