JP2017211025A - Engagement chain and movable body moving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an engagement chain in which the weight of chain members in a plurality of rows can be reduced, and a movable body moving device.SOLUTION: An engagement chain has paired advanceable/retractable chain members 12a, 12b in a plurality of rows, the chain members 12a, 12b are engaged with each other by moving to a forward direction, and integrated to each other, and on the other hand, the chain member 12a, 12b are released from the integrated engagement state by moving to a retraction direction, and branched from each other. In the chain members 12a, 12b, an outer link plate 22 and an inner link plate 21 which are arranged in series are connected to each other so as to be turntable. Partial link plates 21, 22 out of a plurality of the link plates 21, 22 which are aligned in an axial line direction in which the outer link plate 22 and the inner link plate 21 are turned have claw parts 25 for making the chain members 12a, 12b engaged with each other, and link plates 21, 22 other than the partial link plates do not have the claw parts 25.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a meshing chain and a movable body moving device that moves the movable body using the meshing chain.

  Conventionally, the movable body moving apparatus provided with the meshing chain is known (for example, refer patent document 1). In such a meshing chain of the movable body moving device, a pair of three rows of chain members capable of moving forward and backward move to move in the moving direction so as to mesh and integrate with each other while moving from the integrated meshing state to the retracting direction. By moving, they are disengaged from each other and branch off. The chain member that constitutes the meshing chain includes an outer plate having a pair of outer through-holes and an inner plate having a pair of inner through-holes that are rotatable in the longitudinal direction of the chain via a connecting pin and a bush. A large number of units are connected.

JP 2015-215083 A

By the way, in the meshing chain as described above, since three rows of chain members are employed, there is a problem that the weight may become too heavy depending on the size of the chain members.
The present invention has been made paying attention to such problems existing in the prior art. An object of the present invention is to provide a meshing chain and a movable body moving device capable of reducing the weight of a plurality of chain members.

Hereinafter, means for solving the above-described problems and the effects thereof will be described.
The meshing chain that solves the above-mentioned problem has a plurality of chain members that form a pair that can move forward and backward, and the chain members that form a pair move in the traveling direction so that they mesh with each other and are integrated. The chain member is a meshing chain that is disengaged from each other when the chain members move in the retreating direction from an integrated meshing state, and the chain member includes an outer link plate and an inner link plate arranged in series. Of the plurality of link plates that are rotatably connected and arranged in the axial direction in which the outer link plate and the inner link plate rotate, some of the link plates mesh with each other to form a pair of chain members. The link plates other than the part do not have the claw portion.

  According to this configuration, since the claw portions of some of the link plates arranged in the axial direction in which the outer link plate and the inner link plate rotate are omitted, a plurality of chain members Weight reduction can be achieved.

In the meshing chain, it is preferable that the outer link plate and the inner link plate positioned at both end portions in the axial direction have the claw portions, respectively.
According to this configuration, since the chain members are engaged with each other between the claw portions of the outer link plate and the claw portions of the inner link plate positioned at both ends in the axial direction, the chain members can be stabilized in the engaged state. .

  In the meshing chain, a pair of first through holes are formed in the outer link plate so as to line up in the forward / backward movement direction of the chain member, and the first link through the inner link plate so as to line up in the forward / backward movement direction. A pair of second through holes having a larger diameter than the holes are formed, and a connection pin is closely fitted in the pair of first through holes of the outer link plate, and the pair of second through holes of the inner link plate It is preferable that the connecting pins are loosely fitted respectively.

According to this configuration, the outer link plate and the inner link plate are rotatably connected only by the connection pin, so that the bushing can be eliminated.
In the meshing chain, the outer link plate and the inner link plate located at both ends in the axial direction are respectively an outermost outer link plate and an outermost inner link plate, and the outermost inner link plate in the axial direction. An auxiliary link plate that sandwiches the outermost inner link plate with the outermost outer link plate is disposed inside the auxiliary link plate, and a pair of auxiliary through holes are formed in the auxiliary link plate so as to be aligned in the forward / backward movement direction. It is preferable that the connecting pins are closely fitted in the pair of auxiliary through holes of the auxiliary link plate.

  According to this configuration, since the outermost inner link plate is sandwiched between the outermost outer link plate that does not move in the axial direction and the auxiliary link plate that does not move in the axial direction, the outermost inner link plate is positioned in the axial direction. Can do.

  In the meshing chain, it is preferable that a roller is disposed between the inner link plates facing each other in the axial direction in a state of being rotatably supported by the connecting pin.

According to this configuration, for example, when the chain member and the sprocket are engaged with each other, it is possible to suppress the sprocket teeth from being worn by the roller.
A movable body moving device that solves the above-described problems includes the meshing chain having the above-described configuration and a movable body that is connected to the meshing chain and is movable in the forward and backward movement direction of the meshing chain together with the meshing chain.

  According to this structure, the same effect as the said meshing chain can be obtained.

  According to the present invention, it is possible to reduce the weight of a plurality of rows of chain members.

The front view which shows a state when the meshing chain moves to the advancing direction in the movable body moving apparatus of one Embodiment. The front view which shows a state when the meshing chain moves in the retreat direction in FIG. (A) is a partially broken side view showing a part of a chain member, (b) is a side view when (a) is viewed from the front-rear direction, and (c) is when (a) is viewed from the advancing / retreating direction. Side view. (A) is a front view of the outermost outer link plate, (b) is a front view of the outermost inner link plate, (c) is a front view of the clawless outer link plate, and (d) is a front view of the clawless inner link plate. FIG. 4E is a front view of the auxiliary link plate. The side view when a part of chain member of the example of a change is seen from the advancing / retreating direction. The side view when a part of chain member of another example of a change is seen from the advancing / retreating direction. The side view when a part of chain member of another example of a change is seen from the advancing / retreating direction. In the chain member of still another modified example, (a) is a partially broken side view showing a part of the chain member, (b) is a side view when (a) is viewed from the front-rear direction, and (c) is The side view when (a) is seen from the advancing / retreating movement direction.

Hereinafter, an embodiment of a movable body moving apparatus will be described with reference to the drawings.
As shown in FIG. 1, the movable body moving device 11 includes a pair of chain members 12 a and 12 b that can mesh with each other, and a meshing chain 12 that can move forward and backward along its longitudinal direction, and a base end side of the meshing chain 12. And a movable body 15 connected to the end portion on the distal end side of the meshing chain 12 via a joint link 14.

  In the following description, the forward / backward moving direction of the meshing chain 12 when moving the movable body 15 is Z. In this case, the traveling direction of the meshing chain 12 (upward in FIG. 1) is Z1, and the retraction direction of the meshing chain 12 (downward in FIG. 1) is Z2. Further, of the directions orthogonal to the advancing / retreating movement direction Z, the chain members 12a, 12b in a meshing state in which the paired chain members 12a, 12b are meshed with each other and moved together in the retraction direction are chain members 12a, 12b. A direction in which they are separated from each other and branched is defined as a branch direction X (the left-right direction in FIG. 1). Furthermore, a direction orthogonal to both the advancing / retreating movement direction Z and the branching direction X is defined as a front-rear direction Y (a direction orthogonal to the paper surface in FIG. 1). In FIGS. 1 and 2, illustration of the exterior of the housing portion 13 is omitted, and the internal configuration of the housing portion 13 is illustrated.

  As shown in FIG. 1, the accommodating portion 13 is configured to accommodate the meshing chain 12. A sprocket 16 that can rotate in both forward and reverse directions about an axis extending in the front-rear direction Y is provided at the center of the branching direction X in the housing portion 13 so as to mesh with one chain member 12b (meshing chain 12). Yes. The sprocket 16 is rotationally driven in both forward and reverse directions by a motor (not shown). As the sprocket 16 is driven to rotate, the meshing chain 12 moves forward and backward along the forward / backward movement direction Z.

  Further, the accommodating portion 13 includes a guide plate 17 having a rectangular shape that is substantially the same as the exterior (not shown) in the front-rear direction Y. On the inner surface of the guide plate 17, a pair of guide grooves having spiral portions capable of guiding the pair of chain members 12a, 12b so that the pair of chain members 12a, 12b branched from the meshing state move while spiraling. 18 are provided so as to be substantially symmetrical in FIG.

  In the housing portion 13, a pair of guide grooves 18 are provided on the inner side surface of the exterior (not shown) so as to correspond to the pair of guide grooves 18 of the guide plate 17. Therefore, a pair of guide grooves 18 are provided on both inner side surfaces in the front-rear direction Y of the accommodating portion 13 so as to face each other. In addition, an opening 19 for allowing the meshing chain 12 to pass is formed at a substantially central portion of the branching direction X on the surface on the traveling direction Z1 side in the accommodating portion 13.

  As shown in FIGS. 3A to 3C, in this embodiment, three pairs of chain members are employed for the pair of chain members 12a and 12b constituting the meshing chain 12. The pair of chain members 12a and 12b are sequentially arranged in series in the series direction along the advancing / retreating movement direction Z, and a plurality of pairs of inner link plates 21 and a plurality of pairs of outer link plates 22 are rotatably connected. Respectively.

  The inner link plate 21 and the outer link plate 22 of the chain members 12a and 12b have the same contour, and each has a hook-like claw portion 25. The pair of chain members 12 a and 12 b mesh with each other at the claw portion 25 of each outer link plate 22 and the claw portion 25 of each inner link plate 21.

  Each outer link plate 22 is formed with a pair of circular first through holes 23a penetrating so as to line up in the series direction along the forward / backward movement direction Z of the chain members 12a, 12b. On the other hand, in each inner link plate 21, a pair of circular second through holes 23b having a diameter larger than that of the first through holes 23a are arranged in a series direction along the advancing / retreating movement direction Z of the chain members 12a and 12b. It is formed to penetrate through.

  Further, the pair of chain members 12a and 12b has a pair of first through holes 23a and a pair of first link holes 21a and 12b, each pair of adjacent outer link plates 22 and each pair of inner link plates 21 being overlapped in the series direction. In the two through-holes 23b, there are round bar-like connecting pins 24 that are connected in series so as to be freely rotatable.

  The connecting pin 24 is fitted to the pair of first through holes 23a of the outer link plate 22 so as not to rotate, and is fitted to the pair of second through holes 23b of the inner link plate 21 so as to be rotatable. Yes. That is, the connecting pins 24 are tightly fitted in the pair of first through holes 23a of the outer link plate 22, respectively, and the connecting pins 24 are directly loosely fitted in the pair of second through holes 23b of the inner link plate 21, respectively. ing.

  In this case, the inner peripheral surface of the pair of second through holes 23b and the outer peripheral surface of the connecting pin 24 face each other. That is, in the pair of chain members 12a and 12b of the present embodiment, the cylindrical bush is not disposed between the inner peripheral surface of the pair of second through holes 23b and the outer peripheral surface of the connecting pin 24. Further, in the pair of chain members 12a and 12b of the present embodiment, the outer link plate 22 and the inner link plate 21 arranged in series are rotatably connected by a connecting pin 24 extending in the front-rear direction Y. The axial direction in which the link plate 22 and the inner link plate 21 rotate coincides with the front-rear direction Y.

  The pair of chain members 12a, 12b has a claw portion 25 that engages the pair of chain members 12a, 12b among the plurality of link plates 21, 22 arranged in the front-rear direction Y. The link plates 21 and 22 other than a part do not have the claw portion 25. That is, in the present embodiment, of the 12 link plates 21 and 22 arranged in the front-rear direction Y, the two outer link plates 22 and the two inner link plates 21 positioned at both ends in the front-rear direction Y are claw portions. The four outer link plates 22 and the four inner link plates 21 other than both ends in the front-rear direction Y do not have the claw portions 25.

  In this case, of the 12 link plates 21 and 22 arranged in the front-rear direction Y, the two outer link plates 22 having the claw portions 25 located at both ends in the front-rear direction Y and the two pieces having the claw portions 25 As shown in FIGS. 4A and 4B, the inner link plate 21 is an outermost outer link plate 22A and an outermost inner link plate 21A, respectively.

  Further, among the six outer link plates 22 arranged in the front-rear direction Y, the four outer link plates 22 that do not have the claw portions 25 other than the two outermost outer link plates 22A are shown in FIG. As shown, it is a clawless outer link plate 22B. Furthermore, of the six inner link plates 21 arranged in the front-rear direction Y, the four inner link plates 21 having no claw portions 25 other than the two outermost inner link plates 21A are shown in FIG. As shown in FIG. 4, the clawless inner link plate 21B is provided.

  The clawless outer link plate 22B and the clawless inner link plate 21B in this embodiment are shown in FIGS. 4 (a) and 4 (b), respectively, as shown in FIGS. 4 (c) and 4 (d). The claw portion 25 is omitted from the illustrated outermost outer link plate 22A and outermost inner link plate 21A, and has a substantially rectangular plate shape in which both ends in the longitudinal direction form an arc shape. In this case, the respective contour shapes of the clawless outer link plate 22B and the clawless inner link plate 21B are not limited to the shapes of the present embodiment, and may be appropriately changed.

  As shown in FIGS. 3A and 3C, a cylindrical roller 26 is connected between the inner link plates 21 facing each other in the front-rear direction Y in the pair of chain members 12a and 12b. It arrange | positions in the state supported directly so that rotation was possible. In other words, two locations between the two outermost inner link plates 21A and the two claw-less inner link plates 21B facing each other in the front-rear direction Y, and the two claw-less inner links facing each other in the front-rear direction Y At a total of three locations including one location between the plates 21 </ b> B, the rollers 26 are arranged in a state of being inserted through the connecting pins 24.

  Auxiliary link plates 27 sandwiching the outermost inner link plate 21A with the outermost outer link plate 22A are respectively arranged inside the two outermost inner link plates 21A in the front-rear direction Y of the pair of chain members 12a and 12b. Has been. That is, the auxiliary link plate 27 is disposed between each of the two outermost inner link plates 21A and the two rollers 26 inside thereof.

  As shown in FIG. 4 (e), a pair of auxiliary through holes 27 a are formed in the auxiliary link plate 27 so as to be aligned in the longitudinal direction that is the forward / backward movement direction Z. The connection pins 24 are tightly fitted in the pair of auxiliary through holes 27a of the auxiliary link plate 27, respectively. The auxiliary link plate 27 in the present embodiment has the same configuration as the clawless outer link plate 22B shown in FIG. That is, the auxiliary link plate 27 and the claw-free outer link plate 22B are common parts. In this case, the auxiliary link plate 27 and the clawless outer link plate 22B do not necessarily have to be common parts, and may be configured as separate parts.

  As shown in FIGS. 1 and 3A, both end portions of the connecting pin 24 in the pair of chain members 12a and 12b protrude outward from the outermost outer link plate 22A in the front-rear direction Y. When the pair of chain members 12 a and 12 b are accommodated in the accommodating portion 13, the pair of guide grooves 18 in which both end portions of the connecting pins 24 face each other in the front-rear direction Y in the accommodating portion 13. Is slidably inserted.

  That is, when the pair of chain members 12 a and 12 b are accommodated in the accommodating portion 13, one end of each connecting pin 24 is inserted into the guide groove 18 provided in the guide plate 17 of the accommodating portion 13, The other end of the pin 24 is inserted into the guide groove 18 provided on the inner surface of the exterior (not shown) of the accommodating portion 13.

  As shown in FIG. 1, the meshing chain 12 has a claw of the outermost outer link plate 22A corresponding between the pair of chain members 12a and 12b as the pair of chain members 12a and 12b moves in the traveling direction Z1. When the portions 25 and the claw portions 25 of the outermost inner link plate 21A are engaged with each other, the pair of chain members 12a and 12b are engaged with each other in a rigid structure.

  On the other hand, as shown in FIG. 2, the meshing chain 12 has an outermost outer link plate corresponding between the pair of chain members 12a and 12b as the pair of chain members 12a and 12b move in the retracting direction Z2 from the meshed state. The pair of chain members 12a and 12b are branched in the branch direction X by the claw portions 25A of 22A and the claw portions 25 of the outermost inner link plate 21A being mutually disengaged, and most of them are accommodated in the accommodating portion 13. Is done. The positions of the outer link plates 22 meshing with each other and the inner link plates 21 meshing with each other in the pair of chain members 12a and 12b are shifted by one pitch of the connecting pins 24 aligned in the forward / backward movement direction Z.

  As shown in FIGS. 1 and 2, the meshing chain 12 is connected to the movable body 15 via a joint link 14 at the end on the side in the traveling direction Z1 in the longitudinal direction. Various functional members (for example, a lifting table and a crane) are attached to the movable body 15. When the movable body 15 moves in the forward / backward movement direction Z along with the forward / backward movement of the meshing chain 12, the functional member attached to the movable body 15 also moves in the forward / backward movement direction Z together with the movable body 15.

Next, the operation of the movable body moving device 11 will be described.
Now, when the pair of chain members 12a and 12b are meshed to bring the meshing chain 12 into the meshing state, the sprocket 16 is first rotated clockwise in FIG. 2 by driving a motor (not shown). Then, the pair of chain members 12 a and 12 b move in the traveling direction Z <b> 1 while being guided by the pair of guide grooves 18 in the connecting pin 24. Thereby, the outermost outer link plates 22A and the outermost inner link plates 21A corresponding to each other in the pair of chain members 12a and 12b are alternately meshed with each other at their claw portions 25, respectively, and as shown in FIG. The meshing chain 12 is meshed.

  At this time, since the outermost inner link plates 21A are positioned in the front-rear direction Y by the auxiliary link plates 27, the outermost inner link plates 21A mesh with each other with high accuracy. Further, at this time, in the pair of three chain members 12a and 12b, the link plates 21 and 22 other than the outermost outer link plate 22A and the outermost inner link plate 21A do not have the claw portions 25.

  For this reason, since all the link plates 21 and 22 are lighter in weight than the chain member having the claw portions 25 and there are few places where the claw portions 25 engage each other, the sprocket 16 is driven. The load applied to the motor (not shown) can be reduced, and the bending resistance of the pair of chain members 12a and 12b can be reduced.

  On the other hand, when the sprocket 16 is driven to rotate counterclockwise in FIG. 1 by driving a motor (not shown) in the meshing state of the meshing chain 12, the pair of chain members 12a and 12b are connected to the connecting pin 24 by the pair of guide grooves 18. Each moves in the backward direction Z2 while being guided. As a result, the outermost outer link plates 22A and the outermost inner link plates 21A corresponding to each other in the pair of chain members 12a and 12b are alternately engaged with each other at the claw portions 25, and as shown in FIG. 12 is accommodated in the accommodating portion 13.

  Also in this case, the load applied to the motor (not shown) for driving the sprocket 16 is kept small for the same reason as that in which the pair of chain members 12a and 12b are engaged to bring the engagement chain 12 into the engagement state. In addition, the bending resistance of the pair of chain members 12a and 12b can be reduced.

Therefore, the meshing chain 12 in the movable body moving device 11 can be smoothly moved in the advancing / retreating movement direction Z with energy saving.
According to the embodiment detailed above, the following effects are exhibited.

  (1) The meshing chain 12 includes twelve claw portions 25 that mesh the pair of chain members 12a and 12b among the twelve link plates 21 and 22 arranged in the front-rear direction Y. The remaining eight link plates 21 and 22 do not have the claw portion 25. For this reason, in the meshing chain 12, the pair of chain members 12a and 12b can be reduced in weight (reduced in weight) as compared with the case where all (12) link plates 21 and 22 have the claw portions 25. .

  (2) The meshing chain 12 includes only the outermost outer link plate 22A and the outermost inner link plate 21A positioned at both ends in the front-rear direction Y among the twelve link plates 21, 22 arranged in the front-rear direction Y. 25. For this reason, in the meshed state of the meshing chain 12, the pair of chain members 12a, 12b are claw portions 25 of the outermost outer link plate 22A and the claw portions of the outermost inner link plate 21A located at both ends in the front-rear direction Y. Since the gears 25 mesh with each other, the meshing chain 12 can be stabilized in the meshed state.

  (3) In the meshing chain 12, the connecting pins 24 are tightly fitted to the pair of first through holes 23 a of the outer link plate 22, respectively, and the connecting pins 24 are directly connected to the pair of second through holes 23 b of the inner link plate 21. Are loosely fitted. For this reason, the outer link plate 22 and the inner link plate 21 can be pivotally coupled only by the coupling pin 24, so that a bushing can be eliminated. Since the bushing is not required, the outer diameter of the connecting pin 24 can be increased to the outer diameter of the bush, so that the buckling strength in the meshed state of the meshing chain 12 can be improved. In addition, since the bushing is not required, the clearance between the connecting pin 24 and the second through hole 23b can be made smaller than the clearance between the connecting pin 24 and the bushing. Stiffness can be increased. Incidentally, when the bush is used, the portion of the bush that is press-fitted into the second through hole of the inner link plate is crushed, so that a difference occurs in the inner diameter between the portion of the bush that is press-fitted into the second through-hole and the portion that is not press-fitted. . For this reason, it is necessary to ensure a sufficient clearance between the connecting pin and the bush. As a result, the rattling of the connecting pin is increased, and the rigidity of the meshing chain in the meshed state is reduced.

  (4) In the meshing chain 12, the auxiliary link plate 27 that sandwiches the outermost inner link plate 21A with the outermost outer link plate 22A is disposed inside the outermost inner link plate 21A in the front-rear direction Y in a fixed state. . That is, the outermost inner link plate 21A is sandwiched between the outermost outer link plate 22A that does not move in the front-rear direction Y and the auxiliary link plate 27 that does not move in the front-rear direction Y. For this reason, positioning in the front-back direction Y of the outermost inner link plate 21A can be performed. Therefore, the rigidity in the meshing state of the meshing chain 12 can be maintained.

  (5) The meshing chain 12 is arranged between the inner link plates 21 facing each other in the front-rear direction Y in a state where the roller 26 is rotatably supported by the connecting pin 24. For this reason, abrasion of the teeth of the sprocket 16 due to the meshing of the meshing chain 12 and the sprocket 16 can be suppressed.

(Example of change)
In addition, you may change the said embodiment as follows.
As shown in FIG. 5, in the chain members 12a and 12b, a clawless inner link plate 21B may be disposed between the auxiliary link plate 27 and the roller 26 in the front-rear direction Y.

  As shown in FIG. 6, in the chain members 12a and 12b, any one of the two clawless outer link plates 22B disposed between the two rollers 26 in the front-rear direction Y may be omitted. In this way, the step of press-fitting the connecting pin 24 into the first through hole 23a when assembling the chain members 12a and 12b can be reduced, so that the assembly efficiency of the chain members 12a and 12b can be increased.

  As shown in FIG. 7, in the chain members 12a and 12b shown in FIG. 6, a clawless inner link plate 21B may be disposed between the auxiliary link plate 27 and the roller 26 in the front-rear direction Y. .

  As shown in FIGS. 8A to 8C, in the chain members 12a and 12b, the auxiliary link plate 27 is omitted, and a cylindrical bush 30 is disposed between the roller 26 and the connecting pin 24. You may make it do. In this case, since both ends of the bush 30 are fitted into the second through holes 23 b of the inner link plate 21, the outer diameter of the connection pin 24 is such that the connection pin 24 is rotatably inserted into the bush 30. It is smaller than the inner diameter.

  In the above embodiment (FIG. 3) and the chain members 12a and 12b in FIGS. 5 to 8, the connecting pin 24 is loosely fitted in the first through hole 23a of the clawless outer link plate 22B. Also good.

The roller 26 may be omitted from the chain members 12a and 12b.
In the chain members 12a and 12b, the auxiliary link plate 27 may be omitted. In this case, it is preferable that the outermost inner link plate 21A is positioned by the roller 26 in the front-rear direction Y.

In the chain members 12a and 12b, any one of the claw portions 25 of the outermost inner link plate 21A and the claw portions 25 of the outermost outer link plate 22A may be omitted.
Of the 12 link plates 21 and 22 arranged in the front-rear direction Y in the chain members 12a and 12b, the claw portions 25 of the two outermost inner link plates 21A and the claw portions 25 of the two outermost outer link plates 22A And the claw portion 25 may be provided on at least one of the remaining eight link plates 21 and 22.

  The auxiliary link plate 27 may be changed to the outermost outer link plate 22A. That is, the auxiliary link plate 27 and the outermost outer link plate 22A may be a common component.

The chain members 12a and 12b constituting the meshing chain 12 may be two rows of chain members or four or more rows of chain members.
The meshing chain 12 may be composed of two or more pairs of chain members 12a and 12b.

  The movable body moving device 11 may be arranged in any direction. For example, the movable body moving device 11 may be arranged so that the forward / backward moving direction Z coincides with the horizontal direction, or the movable body moving device 11 may be arranged so that the forward / backward moving direction Z intersects the horizontal direction. .

  DESCRIPTION OF SYMBOLS 11 ... Movable body moving apparatus, 12 ... Meshing chain, 12a, 12b ... Chain member, 15 ... Movable body, 21 ... Inner link plate, 22 ... Outer link plate, 23a ... First through hole, 23b ... Second through hole, 21A ... outermost inner link plate, 22A ... outermost outer link plate, 24 ... connecting pin, 25 ... claw, 26 ... roller, 27 ... auxiliary link plate, 27a ... auxiliary through hole, Y ... as an example of axial direction Front-rear direction, Z: advance / retreat direction, Z1: advance direction, Z2: retreat direction.

Claims (6)

The chain member has a plurality of pairs of chain members that can be moved forward and backward, and the chain members that are paired move together in the traveling direction to be engaged with each other to be integrated. A meshing chain that branches by being disengaged from each other by moving in the retraction direction,
In the chain member, an outer link plate and an inner link plate arranged in series are rotatably connected,
Among the plurality of link plates arranged in the axial direction in which the outer link plate and the inner link plate rotate, some of the link plates have claw portions that mesh the paired chain members with each other. A link chain other than the above does not have the claw portion.   2. The meshing chain according to claim 1, wherein each of the outer link plate and the inner link plate located at both end portions in the axial direction has the claw portion. A pair of first through holes are formed in the outer link plate so as to line up in the forward / backward movement direction of the chain member, and the inner link plate has a diameter larger than that of the first through hole so as to line up in the forward / backward movement direction. A large pair of second through holes are formed,
A connection pin is tightly fitted in the pair of first through holes of the outer link plate, and the connection pin is loosely fitted in the pair of second through holes of the inner link plate. The meshing chain according to claim 2. The outer link plate and the inner link plate located at both ends in the axial direction are an outermost outer link plate and an outermost inner link plate, respectively.
An auxiliary link plate that sandwiches the outermost inner link plate with the outermost outer link plate is disposed inside the outermost inner link plate in the axial direction,
A pair of auxiliary through holes are formed in the auxiliary link plate so as to line up in the forward / backward movement direction,
The meshing chain according to claim 3, wherein the connecting pins are closely fitted in the pair of auxiliary through holes of the auxiliary link plate.   5. The roller according to claim 3, wherein a roller is rotatably supported by the connecting pin between the inner link plates facing each other in the axial direction. 6. Meshing chain.   A movable body comprising: the meshing chain according to any one of claims 1 to 5; and a movable body connected to the meshing chain and movable along with the meshing chain in an advancing and retreating direction of the meshing chain. Mobile device.

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