JPH02274B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a crane, and more specifically, the present invention relates to a crane in which a hoisting portion intersects with an X-direction rail installed on the ceiling of a building, a pillar erected on the ground, etc. in order to lift and suspend cargo. The present invention relates to a crane that can freely extend to both one side and the other side of the Y direction.

As is well known, by combining several prior technologies, an X-direction traveling body is disposed so as to be able to travel on an X-direction rail installed on the ceiling of a building, a pillar erected on the ground, etc. A Y-direction expandable body is disposed on the traveling body in a Y direction that intersects with the X direction, and the Y-direction expandable body sequentially fits and connects a plurality of sliders each consisting of a cylindrical body with an open bottom.
One slider is slidable relative to the other slider connected to it, so that it can freely extend in both the one side direction and the other direction in the Y direction, and can further extend to the leading edge. A crane has been proposed in which a hoisting section is disposed on a slider that can be extended so as to be movable in one direction and the other direction of the slider.

According to this, although the whole is small and compact, cargo located anywhere on the ground can be freely transported to a relatively distant place.

However, according to the combination technology that combines the conventional prior art, the drive mechanism of the plurality of sliders is not specially devised. Therefore, for example, it may be considered to use a rope drive system in which each slider is hung with a rope. It is true that this has some good points as well as some flaws.

In other words, the rope must be hung for a long time, and a large space is required to hang the rope.
It is difficult to make the whole thing compact.

As the rope stretches as it is used, it tends to become loose, making maintenance difficult. Especially since there are ropes for multiple sliders,
Its maintenance and management is even more difficult.

Therefore, the present invention has led to the invention of a new crane with a drive device for multiple sliders to replace this, and the gist of the invention is to
An X-direction running body is disposed so as to be able to run on an X-direction rail installed on a pillar or the like erected on the ground, and the A telescoping body is provided, and the Y-direction telescoping body sequentially fits and connects a plurality of three or more sliders each made of a cylindrical body with an open bottom, and one slider connects to another slider connected to it. This allows it to freely extend to both one side and the other side in the Y direction, and the winding part is attached to one side of the slider, which is extended to the tip of the slider. In a crane disposed so as to be able to move freely in one direction and the other direction; a sliding motor for individually and selectively driving a plurality of pinion gears is mounted on the top surface of the slider located at the outermost side of the Y-direction expandable body. At the same time as installing the
A rack that engages with the pinion gear is installed along the longitudinal direction on the top surface of each of the sliders located inside the outermost slider, and each of the plurality of pinion gears is located inside the outermost slider. In order to be able to mesh with each of the sliders, a notch groove through which a pinion gear can be passed is formed on the top surface of the slider except for the innermost slider. When the whole body is expanded from a contracted state, the slider located at the innermost position is driven to extend in order, and when the whole body is contracted from a state where it is extended, it is located inside the slider located at the outermost position. This crane is characterized in that it is configured so that only the pinion gears corresponding to the racks of the sliders that are driven in that order are engaged and driven so that the sliders are shortened one after another, and the purpose of the crane is to The purpose of this invention is to provide a slider extension/contraction drive means that can make the entire Y-direction extendable body that extends/contracts a plurality of sliders small and compact, and also to provide a slider extension/contraction drive means that can reduce the number of failures even during long-term use and is relatively easy to maintain. The present invention provides a crane having a slider telescoping drive means.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 in the figure shows the crane main body, and two X
X-direction traveling bodies 5, 5 are disposed on the direction rails 4, 4 so as to be freely movable. The X-direction traveling bodies 5, 5 can freely travel on the X-direction rails 4, 4 by a traveling means such as an electric motor (not shown).

The above is a means for moving a commonly used overhead crane in the X direction arrow 2, and a means for moving both on one side and the other side in the Y direction perpendicular to the X direction arrow 2 as shown by arrow 6. have. That is, the Y-direction expandable body 7 is fixed to the lower part of the X-direction traveling bodies 5, 5. The Y-direction expandable body 7 has an opening 8 formed at its lower part and is composed of a plurality of sliders S ₁ , S ₂ , and S ₃ formed to have different diameters.

That is, the slider _S1 with the largest diameter fits and holds the next largest slider _S2 , and this slider _S2 then fits and holds the slider _S3 with the smallest diameter. . A metal bearing 9 with a small coefficient of friction is disposed between these sliders S ₁ , S ₂ , and S ₃ as a sliding guide to facilitate sliding.

The example in the figure shows an example in which each square of the slider is placed. Due to these _, slider S ₂ can freely run inside slider S 1 to one side and the other side in the Y direction, and slider S ₃ can freely run inside slider S ₂ to one side and the other side in the Y direction. Therefore, the Y-direction expandable body 7 can freely expand and contract on one side and the other side in the Y direction.

That is, 10 is a sliding means for the sliders S ₁ , S ₂ , S ₃ , and the sliders are controlled by a control means (not shown).
This is for extending S ₁ , S ₂ , and S ₃ in one side direction 11 and the other side direction 12 of the Y direction arrow 6. This sliding means 10 is fixed on a slider S ₁ fixed to the X-direction traveling body 5, and pinion gears 13, 13 for sliding the slider S ₃ are arranged on one side along the longitudinal direction. At the same time, pinion gears 14, 14 for sliding the slider _S2 are arranged on the other side.

In order to engage the pinion gears 13, 13 with the rack 15 disposed on the slider _S3 , cutout grooves 16 and 17 are formed on the sliders _S1 and _S2 as shown in FIG. . This allows the pinion gears 13, 13 disposed above the slider _S1 to engage with the rack 15 disposed on the slider _S3 . The cutout groove 17 formed _on the slider S2 is not formed over the entire length of the slider _S2 , as shown in FIG. Therefore, if the pinion gears 13, 13 and the rack 15 remain engaged, the slider _S2 can only slide within the length of the notched groove 17. In order to eliminate the above problem, the pinion gears 13, 13 are configured to move upward via an arbitrary clutch mechanism after sliding the slider _S3 , as shown by the dashed line in FIG. There is.

Next, the sliding means of the slider _S2 will be explained. In order to slide this slider _S2 , a rack 1 similar to the above-mentioned rack ₁₅ is placed on the slider S2.
8 are arranged. Then, the pinion gears 14, 14 are engaged with this rack 18. In order to enable this engagement, there is a notched groove 19 on the slider _S1 .
is formed.

Next, 20 is a winding part arranged in the slider S ₃ so as to be able to run in the longitudinal direction, and the hook H
It consists of a means for winding up the wire rope W to which the wire rope W is attached, and a means for traveling within the slider _S3 . Various means can be considered as the above-mentioned traveling means, but in this embodiment, a slider is used.
Rails 21, 21 are provided protruding from the vertical part of _S3 , and running rollers 22, 22 disposed on the winding part 20 are placed on the rails 21, 21. Then, the traveling rollers 22, 22 are rotated in forward and reverse directions by an electric motor (not shown) disposed within the winding section 20. As a result, the winding unit 20 moves inside the slider S ₃ located at the tip end in one direction 11 and the other direction 1.
2 can be run.

A guide rod 2 protrudes from the top of the slider S ₃ as a guide means to ensure smooth running.
Guide pieces 24, 24 protruding from above the winding portion 20 are fitted into the guide pieces 3, 23. As is clear from the above, the sliders S ₁ , S ₂ , and S ₃ that make up the Y-direction expandable body 7 have a stopper mechanism to prevent the connected sliders from coming apart when they are mutually extended by a certain length. . For example a slider
When S ₃ protrudes 2/3 in one direction 11 or the other direction 12, the protruding piece 25 protruding on slider S ₃ switches the limit switch 2 disposed on slider S ₂ .
It comes into contact with the pressing piece 26a of No. 6. This causes the slider _S3 to stop sliding. At this time, stoppers 27 and 28 protruding from the tops of the sliders _S2 and _S3 , respectively, come into contact with each other to prevent the sliders _S3 from sliding any further.

Next, 29 is a protrusion disposed on the slider _S2 , and 30 is a limit switch disposed on the slider _S3 . Above limit switch 30
has a pressing piece 30a that is pressed by the protruding piece 29. Also, stopper 31 on slider S ₂
However, a stopper 32 is provided protrudingly on each slider _S1 , and these stoppers 31 and 32 come into contact at a position where the slider _S2 protrudes by 2/3 of its total length, so that the slider _S2 It is configured so that it does not slide more than 2/3 of the total length with respect to S ₁ . 33 is a protruding piece provided on the side surface of the winding portion 20, and 34 is a limit switch having a pusher 34a disposed on the inner wall of the slider _S3 .

The limit switches 26, 30, 34, the protrusions 25, 29, 33 and the stoppers 27, 28, 3
1 and 32 are arranged on both sides of the one side direction 11 and the other side direction 12, and the movement limit of the winding part 20 and the sliders S ₃ and S ₂ in both the one side direction 11 and the other side direction 12 is set. It's becoming regulated. In the figure, 35 indicates the cargo to be transported, 36 indicates the inside of the warehouse, and 37 indicates a canopy car with an open rear end.

Next, the operation of the above embodiment will be explained.

To explain the case where the luggage 35 loaded on the canopy car 37 is carried into the warehouse interior 36 as shown in FIGS. 3 and 4, the hoisting section 20 is first moved in the one side direction 11. The above movement is performed by rotating the traveling roller 22 by a control mechanism (not shown). This allows the winding part 20 to be positioned in the one side direction 11, that is, at the tip in the direction in which the Y-direction stretchable body 7 extends, so that the entire length of the Y-direction stretchable body 7 can be effectively utilized. .

Next, the pinion gear 13 is operated to cause the slider _S3 to slide and extend in the one side direction 11. The pinion gear 13 is normally in contact with and separate from the rack 15 disposed on the slider _S3 ,
During operation, the clutch means disposed within the sliding means 10 moves the rack 15 downward in FIG.
It is configured to engage with. In this way, when the slider _S3 is slid in one direction 11 and extended to the sliding limit position, the protruding piece 25 provided on the slider _S3 is disposed on the slider _S2 . It comes into contact with and presses the pressing piece 26a of the limit switch 26. This limit switch 26
When the pressing piece 26a is pressed by the protruding piece 25, the signal is transmitted to the sliding means 10. As a result, the rotation of the pinion gear 13 is stopped and the pinion gear 13 is lifted upward. The sliding means 10 then rotates the pinion gear 14 counterclockwise in FIG. The pinion gear 14 passes through a notched groove 19 formed on the slider _S1 and is constantly engaged with a rack 18 disposed on the slider _S2 . For this purpose, the slider _S2 is forced to slide in one direction.
In this way, sliders S ₃ and S ₂ are moved to Y
The entire length of the direction stretchable body 7 is extended. Then, the hook H attached to the hoisting part 20 is attached to the baggage 3.
Stop this when you reach the top of 5.

Next, the hoisting means in the hoisting section 20 is operated to stretch the wire rope W and hook the hook H to the load 35.

After hooking the hook H to the load 35 in this way, the hoisting means is operated to remove the wire rope W.
and hoist the load 35.

Next, rotate the pinion gear 14 in the opposite direction to the above,
That is, it is rotated clockwise in FIG. As a result, the slider S ₂ is slid in the other side direction 12, and the slider S 2 is moved to the original position, that is, the one side 11 with respect to the slider S _1.
and returns to the position where it does not extend in both directions on the other side 12. When the slider S ₂ is returned to the original position, it is detected by a detection means (not shown) (for example, a limit switch or the like) and transmitted to the sliding means 10 . The sliding means 10 receiving the above signal stops the operation of the pinion gear 14 and causes the pinion gear 13 to operate in the opposite direction. By operating the pinion gear 13, the slider _S3 is slid in the other direction 12 and returns to the original position.

After the sliders S ₃ and S ₂ have returned to their original positions in this way, the X-direction traveling body 5 is operated to move the cargo 35 to one side or the other side of the X-direction 2. After the movement in the X direction 2 is completed as described above, the traveling means of the winding section 20 is operated to position the winding section 20 near the 12th end of the slider _S3 in the other direction. Next, the sliders S ₃ and S ₂ are slid in the other direction 12 using the same means as described above, and the Y-direction expandable body 7 is extended in the other direction 12 . When the cargo 35 is moved to the position where it is to be carried in by the above-mentioned extension, this extension is stopped. Then, the hoisting means of the hoisting section 20 is operated to lower the suspended cargo 35.

In this embodiment, the metal bearings 9 are used as sliding guides between the sliders S _{1 ,} S _{2 ,} and _{S 3 .} could also be slid with low friction. However, the above-mentioned sliding guide is not limited to this metal bearing _9. For example, as shown in _FIG .
8 may be provided so that the sliders S ₁ and S ₂ come into contact with the slider S ₂ via this guide roller 38 .

As described in detail above, the present invention provides an X-direction rail 4,
An X-direction traveling body 5 is disposed so as to be able to travel in the X-direction traveling body 5, and a Y-direction extensible body 7 is disposed on the X-direction traveling body 5 so as to face the Y-direction 6 intersecting the X-direction 2. The extensible body 7 consists of three or more cylinders each having an open bottom, and sequentially fits and connects a plurality of sliders S ₁ , S ₂ , S ₃ . . . S _o , and one slider is connected to it. It is made to be able to slide with respect to the slider of the slider S _o , which allows it to freely extend to both one side and the other side of the Y direction. In a crane in which a slider _S 20 is disposed so as to be movable in one side direction 11 and the other side direction 12; a plurality of pinions are installed on the top surface of the slider S ₁ located at the outermost side of the Y-direction expandable body 7; gear 13,1
In addition to installing a sliding motor 10 for individually selectively driving 4..., the outermost slider S ₁
On the top surface of each of the sliders S ₂ , S ₃ , which are located inside the sliders S 2 , S 3 .
15... are attached along their respective longitudinal directions, and each of the plurality of pinion gears is located inside _the outermost slider S ₁ ,
In order to be able to mesh with each of the _above sliders, a notch groove through which the pinion gear can be passed is formed on the top surface of the other sliders except for the innermost slider S _o . When the entire Y-direction stretchable body is extended from a contracted state, the slider S _o located at the innermost position is sequentially driven to extend, and when the entire body is contracted from an extended state, the slider S o is located at the outermost position. The slider S2 is shortened one after another, starting from the slider _S2 located inside the slider, so that only the pinion gears corresponding to the racks of the sliders that are driven in that order are engaged and driven. Since this is a crane that can do That is, there is no need for a space for passing the rope around. Also, since a rack is provided on the top surface of each slider, a sliding motor is attached to the top surface of the outermost slider, and the pinion gear is engaged with each rack, each slider can be closely connected. It is.
Moreover, the installation space for the rack and pinion gear itself is small. Therefore, it is suitable as a loading/unloading device for vehicles, especially small vehicles. The meshing drive of the rack and pinion gear is reliable,
Since there is less risk of it coming off like a rope, it is easy to maintain over long periods of use. It offers various practical advantages.

[Brief explanation of drawings]

The accompanying drawings show an embodiment of the present invention, and FIG. 1 is a perspective view, FIG. 2 is a sectional view along the width direction of the Y-direction expandable body, FIGS. 3 and 4 are illustrations of operating states, and FIG. 5 6 is a diagram explaining the sliding order of the slider, and FIG. 6 is a diagram showing another example of the sliding guide. In the figure, 1...Main body, 2...X direction, 3...Ceiling of building, 4...X direction rail, 5...X direction traveling body, 6...
Y direction, 7...Y direction stretchable body, 11...One side direction, 1
2...Other side direction, 20...Rolling part, _S1 , _S2 , _S3 ...
Showing a slider.

Claims (1)

[Scope of Claims] 1. An X-direction traveling body 5 is disposed so as to be able to run on X-direction rails 4, 4, which are installed on the ceiling of a building, a pillar erected on the ground, etc. A Y-direction stretchable body 7 is disposed on the body 5 to face a Y-direction 6 intersecting the X-direction 2, and the Y-direction stretchable body 7 has three or more sliders S ₁ each made of a cylinder whose lower part is open. , S ₂ , S ₃ ... S _o are sequentially fitted and connected, and one slider is made slidable relative to the other slider connected to it,
As a result, the winding portion 20 can be freely extended in both the one side direction and the other side direction in the Y direction, and the winding portion 20 can be extended to the slider _{S o that} is extended to the most extreme end. In a crane disposed so as to be freely movable in the lateral direction 12; a plurality of pinion gears 13, 1 are mounted on the top surface of the slider _S1 located at the outermost side of the Y-direction expandable body 7;
In addition to installing a sliding motor 10 for individually selectively driving 4..., the outermost slider S ₁
On the top surface of each of the sliders S ₂ , S ₃ , which are located inside the sliders S 2 , S 3 .
15... are attached along their respective longitudinal directions, and each of the plurality of pinion gears is located inside _the outermost slider S ₁ ,
In order to be able to mesh with each of the _above sliders, a notch groove through which the pinion gear can be passed is formed on the top surface of the other sliders except for the innermost slider S _o . When the entire Y-direction stretchable body is extended from a contracted state, the slider S _o located at the innermost position is sequentially driven to extend, and when the entire body is contracted from an extended state, the slider S o is located at the outermost position. The slider is configured to be shortened sequentially starting from the slider _S2 located inside the slider, and in order to enable the above-mentioned sequential expansion and contraction, one pinion gear moves downward and engages with the corresponding ease. When the slider is engaged, the other pinion gears move upward and are retracted to a position where they do not engage with the corresponding racks, so that only the corresponding pinion gears engage and drive only the racks of the sliders that are to be driven at that turn. A crane characterized by comprising: