JP2006316860A - Moving body driving rope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems that a driving rope is locally worn and elongated to cause the stopping accuracy deterioration of a sliding member and the size of a curved chain belt is increased to increase the diameter of a sprocket, resulting in an increase in the bulge of a fork. <P>SOLUTION: In the moving body driving rope, chain belts C2, C3 forming one end 3c of the driving rope 3 and at least two lines of chain belts C1, C4 forming the other end 3a of the driving rope 3 and arranged on both outsides of the chain belts C2, C3 are bent to intersect with each other and chain belts C2, C3 forming one end 3c are arranged between the chain belts C1, C4 forming the other end 3a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a technology of a driving rope used in a moving body such as a stacker crane in an automatic warehouse, a slide fork used in a transfer device for an automatic guided vehicle, or the like.

Conventionally, a slide fork includes a base and a sliding member that is slidably held with respect to the base, and the sliding member is slid between the base and the sliding member. A drive rope such as a chain belt that is driven when moving is hung. The drive cable has one end attached to the front part of the sliding member and the other end attached to the rear part of the sliding member, and is hung against the drive sprocket and driven sprocket provided on the base side. It has been. The sliding member slides with respect to the base by driving the driving rope to advance and retreat.
As described above, when the driving cables are hooked between the sliding member and the base, it is necessary to prevent the driving cables from interfering with each other at a portion where the driving cables intersect.

Therefore, in the conventional slide fork, a chain belt (curved chain belt) that can be bent in the width direction is used as the driving rope, and the driving rope end at the front and rear of the driving sprocket and the driven sprocket and the sliding member. The attachment part of the part was arrange | positioned in the position which mutually biased with respect to the direction along the sliding direction of a sliding member (for example, refer patent document 1).
In addition, a technique for making a driving rope sprocket sideways (horizontal) is well known.
JP-A-10-35819

  However, in the configuration using the curved chain belt, the drive sprocket, the driven sprocket, the mounting portion of the driving rope end portion at the front portion and the rear portion of the sliding member are in the direction along the sliding direction of the sliding member. Since it is disposed at a biased position, the driving cable hung between the sliding member and the base is disposed obliquely with respect to the sliding direction of the sliding member. When the drive cable is driven in this state, the drive cable is locally worn and stretched due to a deviation between the drive direction of the drive cable and the actual sliding direction of the sliding member. This was a factor that deteriorated the stopping accuracy of the sliding member.

  Also, when the sprocket is used sideways, the slide fork itself becomes wide according to the size of the sprocket. In addition, since force is always applied in the thrust direction of the pin of the chain belt, there is a possibility that the pin may come off.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

That is, in claim 1, a driving rope for a moving body configured by connecting a plurality of ropes in parallel in the width direction,
A plurality of cords arranged in parallel are cut at one end at both ends in the width direction and cut at the other end at the center in the width direction.

  According to a second aspect of the present invention, the plurality of cable bodies constituting the drive cable are arranged symmetrically with respect to the central axis in the width direction of the drive cable.

  According to a third aspect of the present invention, in the width direction, a spacer is disposed between the cord arranged at the one end and the cord arranged at the other end.

  As effects of the present invention, the following effects can be obtained.

  According to the first aspect, the one end and the other end of the drive cable do not interfere with each other. Moreover, the strength of the driving cable can be improved by providing a plurality of chain belts.

  According to the second aspect of the present invention, since the drive cable can be configured symmetrically in the width direction, it is possible to prevent an excessive load from being applied to the drive cable.

  According to the third aspect, the width between the chain belts can be easily adjusted. That is, it is possible to adjust the width of the gap.

Next, embodiments of the invention will be described.
FIG. 1 is an exploded perspective view showing a configuration of a slide fork S of a stacker crane as an embodiment of a moving body, and FIG. 2 is an enlarged perspective view showing a part of a chain belt C1 constituting a drive line 3 of the present invention. FIG. 3 is a perspective view showing a central portion of the drive cable 3, and FIG. 4 is an overall perspective view showing the drive cable 3.

First, the slide fork S which is one embodiment of the moving body will be described.
As shown in FIG. 1, the slide fork S includes a base 1 attached to the frame F, a sliding member (intermediate sliding body) 2 slidably held with respect to the base 1, and a sliding member 2. The upper plate 18 is slidably provided with respect to the upper plate 18. The frame F is a frame fixed to the stacker crane main body.

  Between the base 1 and the sliding member 2, a first drive cable 3 for sliding the sliding member 2 is laid, and between the upper plate 18 and the base 1, the sliding A second drive cable 4 a and a third drive cable 4 b are suspended via the moving member 2. In the present embodiment, the first drive cable 3, the second drive cable 4a, and the third drive cable 4b are provided by arranging a plurality of roller chain belts that are cable bodies as shown in FIG. It is configured.

As shown in FIG. 2, the roller chain belt is formed by alternately combining link members 28 and outer plates 29 and 29 for connecting the two link members 28 and 28 via pins 27 and 27. It is.
The link member 28 includes a pair of inner plates 26 and 26 arranged with a space therebetween, and a pair of bosses 31 and 31 arranged between the inner plates 26 and 26.
A pair of holes for inserting the pins 27 is formed in the inner plate 26 and the outer plate 29, respectively. And so that the holes of the pair of outer plates 29, the holes of the pair of inner plates 26 arranged inside thereof, and the holes of the boss 31 arranged further inside thereof are inserted simultaneously, The pin 27 is inserted.

In the following description, the arrow direction in FIG.
A drive shaft 5 is provided at a front portion of the base 1 so as to be rotatable with respect to the base 1, and a drive sprocket 6 is fixed to the drive shaft 5. The drive shaft 5 is driven by a motor (not shown) and is rotatable in both forward and reverse directions. A driven shaft 7 is rotatably provided at the rear portion of the base 1, and a driven sprocket 8 is fixed to the driven shaft 7.

  In the present embodiment, the driving sprocket 6 and the rear driven sprocket 8 are disposed at the front portion of the base 1 so that the first driving rope 3 is horizontal, and the driving sprocket 6 is driven by a motor (not shown). However, the arrangement of the driving sprocket 6 and the method of laying the driving cable 3 are not limited to the above embodiment. For example, the front drive sprocket 6 is a driven sprocket, the drive sprocket is mounted on the extended line of the output shaft of the motor, the motor and the drive sprocket are disposed below the base 1, and the drive cable 3 projects downward. It may be laid like this. At that time, if necessary, a driven sprocket may be further provided to change the moving path of the driving cable 3.

  Further, the front portion of the base 1 is provided with a first front-side fixing portion 20a to which one end portion (lower end portion) of the third drive cable 4b is fixed. A first rear side fixing portion 20b to which one end portion (lower end portion) of the second drive cable 4a is fixed is provided. Furthermore, a guide member 17 that engages with a lower guide groove 11 of the sliding member 2 described later is provided on the inner side of both front and rear sides of the base 1.

  An upper guide groove 10 and a lower guide groove 11 are formed along the longitudinal direction on the outer sides of both sides of the sliding member 2. A storage space in which the first drive cable 3, the second drive cable 4a, the third drive cable 4b, and the like are stored in the widthwise center portions of the upper and lower surfaces of the sliding member 2 in the longitudinal direction. 12 is provided.

  The front portion of the storage space 12 is provided with a second front fixing portion 9a to which the rear end of the first driving cable 3 is fixed, and a rectangular hole 13, and the rectangular driving hole 4a has a second driving cable 4a. A front sprocket 14 is provided. The rear portion of the storage space 12 is provided with a second rear fixing portion 9b to which the front end of the first driving cable 3 is fixed, and a rectangular hole 15, and the third driving cable 4b is provided in the rectangular hole 15. A rear sprocket 16 is provided to be hung.

  Guide members 19, 19... That engage with the upper guide groove 10 of the sliding member 2 are provided on the inner sides of both sides of the upper plate 18. The front portion of the upper plate 18 is provided with a third front side fixing portion 21a to which the other end portion (upper end portion) of the third driving cable 4b is fixed. A third rear side fixing portion 21b to which the other end of the second driving cord 4a is fixed is provided.

The first driving cable 3 is arranged in an α shape so as to cross from the second front fixing portion 9a to the driven sprocket 8, from the driven sprocket 8 to the driving sprocket 6, and from the driving sprocket 6 to the second rear fixing portion 9b. (Hereafter, it is simply described as “It can be hung with a tack”). The sliding member 2 slides on the base 1 in a state where the guide members 17 provided at the front and rear portions of the base 1 are fitted in the lower guide grooves 11 provided along the longitudinal direction. It is held freely.
The driving sprocket 6 and the driven sprocket 8 are arranged in a direction parallel to the sliding direction of the sliding member 2.

  The second drive cable 4a is arranged in a V shape, and spans from the third rear fixing portion 21b to the front sprocket 14 and from the front sprocket 14 to the first rear fixing portion 20b. Similarly, the third drive cable 4b is arranged in a V-shape, and spans from the third front fixing portion 21a to the rear sprocket 16 and from the rear sprocket 16 to the first front fixing portion 20a. ing. The upper plate 18 is slidably held by the sliding member 2 in a state where the guide member 19 is fitted in the upper guide groove 10 of the sliding member 2.

  In addition, as shown in FIG. 1, the 1st front side fixing | fixed part 20a and the 1st back side fixing | fixed part 20b shifted | deviated to the mutually opposite side with respect to the direction along the sliding direction of the sliding member 2. As shown in FIG. The third front side fixing part 21a and the third rear side fixing part 21b are also arranged at the same position (positions different in the left-right direction). The front sprocket 14 is arranged so as to be displaced in the same direction as the first rear fixing portion 20b and the third rear fixing portion 21b, and the rear sprocket 16 is fixed to the first front fixing portion 20a and the third front fixing portion. It is displaced in the same direction as the portion 21a.

  In this way, the second drive cable 4a and the third drive cable 4b are bridged between the fixed portions and the sprockets, so that the upper plate 18 and the slide member 2 or the slide member 2 Even if the second drive cable 4a and the third drive cable 4b intersect with the base 1, the second drive cable 4a and the third drive cable 4b do not interfere with each other.

As shown in FIG. 1, the second front fixing part 9 a and the second rear fixing part 9 b to which the front and rear ends of the first driving cable 3 are fixed are located above the driving sprocket 6 and the driven sprocket 8. The sliding member 2 is disposed substantially at the center in the width direction. Then, the first driving cable 3 can be bridged between the driving sprocket 6 and the driven sprocket 8 and the second front fixing part 9a and the second rear fixing part 9b arranged as described above. Is spanned in a direction along the sliding direction of the sliding member 2.
That is, the first drive cable 3 is disposed between the second drive cable 4a and the third drive cable 4b in a plan view, and the lower part of the second drive cable 4a or the third drive cable. It is comprised so that it may not interfere with the lower part of 4b.

  In other words, the first driving cable 3, the second driving cable 4a, and the third driving cable 4b are arranged in parallel with the sliding direction of the upper plate 18 and the sliding member 2, respectively, and the sliding They are provided at different positions in the left-right direction with respect to the moving direction, with a distance that does not interfere with each other.

Next, the first drive cable 3 will be described.
As described above, the first drive cable 3 is arranged by swipe. For this reason, if this 1st drive line 3 is arrange | positioned in the surface parallel to the said sliding direction, the part of the one end side of this drive line 3 and the part of the other end side will mutually cross | intersect. . When the drive cable 3 is formed of a single row of roller chain belts, like the second drive cable 4a and the third drive cable 4b, the roller chain belt parts interfere with each other at the intersection. . In order to prevent such a problem, the first drive cable 3 is configured as follows.

  As shown in FIGS. 3 and 4, the first drive cable 3 is composed of a plurality of rows of chain belts C1, C2, C3, and C4. In this embodiment, the first drive cable 3 is composed of two rows of front chain belts C1 and C4 and two rows of rear chain belts C2 and C3. Specifically, two rows of front chain belts C1 and C4 having a space between them are connected so that the front portions (one end) of the two rows of rear chain belts C2 and C3 are sandwiched.

Hereinafter, for the sake of explanation, it is assumed that the first drive cable 3 is composed of three areas of a front part 3a, a central part 3b, and a rear part 3c.
The front portion 3a is composed of two rows of chain belts C1, C4, the central portion 3b is composed of four chain belts C1, C2, C3, C4, and the rear portion 3c is composed of two rows of chain belts C2, C4. C3. In other words, the rear part (one end) 3c is in a state in which the chain belts C1 and C4 at both ends are notched from the central part 3b, and the front part (the other end) 3a is in two central rows from the central part 3b. The chain belts C2 and C3 are notched.

  In this embodiment, since the driving cable 3 is composed of the roller chain belts C1, C2, C3, and C4, it is possible to reliably move a heavy article and, as will be described later, a roller chain Notches can be easily formed by not providing the link members that constitute the belts C1, C2, C3, and C4, but they are driven by other cords such as timing belts according to the type and weight of articles to be conveyed. A cord may be configured.

As shown in FIG. 3, in the central portion 3b, a plurality of rows of chain belts C1, C2, C3, and C4 are arranged side by side and fixed. Specifically, in the central portion 3b, the rear end portion of the front chain belt C1 is connected in parallel to the front end portion of the rear chain belt C2 via the spacers 30, 30. It is connected in parallel with the other rear chain belt C3 (from the front end portion to the rear end portion), and the front end portion of the rear chain belt C3 is connected to the front chain via the spacers 30, 30. The belt C4 is connected in parallel to the rear end portion.
That is, the front chain belts C1 and C4 are arranged apart from each other in parallel, and the rear chain belts C2 and C3 are arranged in parallel and without a gap.

  The chain belts C1, C2, C3, and C4 are connected to each other by passing the pins 27 through the inner plates 26, 26..., The outer plates 29, 29. The outer plates 29, 29,... May be used alone or stacked on the spacers 30, 30.

  Since the drive cable 3 is configured as described above, a gap is formed between the front chain belts C1, C4, and the width of the gap is the width of the rear chain belts C2, C3 and the spacers 30, 30. It is about the same width. Therefore, as shown in FIG. 4, even when the front portion 3a and the rear portion 3c of the driving rope 3 are bent and the driving rope 3 is struck against the driving sprocket 6, the driven sprocket 8, etc., the rear chain belts C2 and C3 are It is possible to pass between the front chain belts C1 and C4 without interfering with the front chain belts C1 and C4.

In this embodiment, a gap is formed between the front chain belts C1 and C4 (front portion 3a) for the rear chain belts C2 and C3 to pass without interfering with each other. It is not limited to the front chain belts C1 and C4 side, and a gap for allowing the front chain belts C1 and C4 to pass without interfering with each other is formed between the rear chain belts C2 and C3 (rear part 3c). Be good.
Further, in this embodiment, the first drive cable 3 is constituted by the two rows of the front chain belts C1 and C4 and the two rows of the rear chain belts C2 and C3. The drive cable 3 may be constituted by the front chain belt and the rear chain belt in the row.

In this way, the driving cord 3 of the moving body S configured by connecting a plurality of cord bodies C1, C2, C3, and C4 in parallel in the width direction,
Since the cords C1, C2, C3, and C4 arranged in parallel are cut out at one end 3c at both ends in the width direction and at the other end 3a at the center in the width direction,
The one end 3c and the other end 3a of the driving cable 3 do not interfere with each other. Moreover, the strength of the drive cable 3 can be improved by providing a plurality of chain belts C1, C2, C3, and C4.

In the present embodiment, the drive cable 3 is configured by arranging four rows of chain belts C1, C2, C3, and C4 in the width direction. However, the drive cable 3 is a chain belt for forming one drive cable. The number of arrangement is not limited as long as it is 3 or more. In other words, in the case of the minimum configuration, one row of chain belts is arranged on one end side, and one row of chain belts is arranged on both outer sides in the width direction, so that the driving rope is constituted by three rows of chain belts as a whole. .
In addition, it is desirable that the longitudinal lengths of the chain belts forming one end side and the longitudinal lengths of the chain belts forming the other end side are equal, but the length of the chain belt on one end side and the other end side are desirable. The lengths of the chain belts are not necessarily equal. Also in the present embodiment, the lengths of the chain belts C2 and C3 forming one end side and the lengths of the chain belts C1 and C4 forming the other end side are equal, but the length of the chain belt C1 is equal to that of the chain belt C2. It is not equal to the length.

Further, the chain belt forming one end side and the chain belt forming the other end side are connected in steps in the longitudinal direction of the drive cable. In addition, the chain belt forming one end side and the chain belt forming the other end side are arranged so as to be shorter than the longitudinal length of the drive cable.
In other words, the chain belts that make up the drive strategy do not include chain belts that are equal to the length of the drive strategy in the longitudinal direction, and the chain belt that forms one end side simultaneously becomes the chain belt that forms the other end. There is nothing.

Further, the plurality of chain belts C1, C2, C3, and C4 constituting the driving cable 3 are arranged symmetrically with respect to the central axis in the width direction of the driving cable 3,
Since the drive cable 3 can be configured symmetrically in the width direction, it is possible to prevent an excessive load from being applied to the drive cable 3.

Further, in the width direction, spacers 30, 30... Are arranged between the chain belts C2, C3 arranged at the one end 3c and the chain belts C1, C4 arranged at the other end 3a. So
The width between the chain belts C1 and C4 can be easily adjusted. That is, it is possible to adjust the width of the gap (the gap described in claim 2).

  The means for adjusting the width of the gap is not limited to a spacer using a chain belt component or a separate part, and another chain belt itself may be used as the spacer. If it demonstrates in accordance with this Embodiment, it will connect between chain belt C1 * C2 and chain belt C3 * C4 in the width direction via another chain belt.

FIG. 1 is an exploded perspective view showing a configuration of a slide fork S of a stacker crane which is an embodiment of a moving body. The perspective view which shows a part of chain belt C1 which comprises the drive cable 3 of this invention. The perspective view which shows the center part of the drive cable 3. FIG. FIG. 3 is an overall perspective view showing a drive cable 3.

Explanation of symbols

3 Driving rope 3a Front part 3b Center part 3c Rear part 30 Spacer C1, C4 Front chain belt C2, C3 Rear chain belt S Moving body (slide fork)

Claims (3)

It is a driving rope for a moving body constructed by connecting a plurality of ropes in parallel in the width direction,
A driving cord for a moving body, wherein a plurality of cords arranged in parallel are cut out at one end at both ends in the width direction and the other end is cut out at the center in the width direction.   The driving rope for a moving body according to claim 1, wherein the plurality of ropes constituting the driving rope are arranged symmetrically with respect to a central axis in a width direction of the driving rope.   3. The spacer according to claim 1, wherein a spacer is disposed between the cord disposed at the one end and the cord disposed at the other end in the width direction. Driving cord for moving body.

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