JP4065875B2 - Chain cover structure - Google Patents

Description

  The present invention relates to a structure of a chain cover that covers a chain in which an inner link plate and an outer link plate are connected by pins.

  The chain is widely used in general industrial equipment as a member / means for transmitting a driving force.

  When using a chain for transporting articles, take measures against it by covering the chain from the outside with a chain cover in order not to adversely affect the articles to be transported and to prevent oil such as grease from adhering to surrounding people. is doing.

With regard to the chain cover, for example, in Patent Document 1 (Japanese Patent Laid-Open No. Hei 8-231007), in order to eliminate the need for special processing and members for attaching the chain cover to the chain, both the left and right side surfaces on the link plate side of the chain and the roller surface A chain cover that covers the outer surface is proposed.
JP-A-8-231017

  Here, considering the chain transport path, in the case where the chain circulates outside the arranged sprockets, only the inner part of the chain meshes with the sprocket. The chain can be circulated without interfering with the sprocket.

  However, when the circulation path of the chain is complicated, for example, there are bent portions, and not only the inside of the chain but also the outside engages and circulates with the arranged sprockets, depending on the conventional chain cover such as Patent Document 1, the chain If there is no limit to the feed range, the sprocket that meshes with the outside of the chain will bite into the outer surface of the chain cover. This biting has a problem that the chain malfunctions, the chain returns poorly, and eventually the chain cover breaks.

  For example, in a multi-story parking device, if the occupant's clothing touches the chain when the occupant gets on and off, it will cause oil stains on the clothing, and a chain cover is particularly necessary, but the chain cover can be placed on the chain In some cases, the range is limited and it is difficult to effectively prevent contamination.

  Specifically, as shown in FIG. 8, the chain b that pulls up the lower platform a on which the vehicle is mounted is pulled in the horizontal direction at the side of the upper platform c, so that the sprocket d meshes with one side of the chain b. And a sprocket e meshing with the other side of the chain b. Therefore, when the chain cover f of the above-mentioned Patent Document 1 is provided, the portion covering the outer surface of the chain b bites into the sprocket e at a location indicated by the symbol g and causes malfunction of the device.

  On the other hand, if the chain cover f is provided in a range where the sprocket e meshing with the other side of the chain b is not sent (range h in FIG. 8) so as not to cause a malfunction, dirt when the passenger gets on and off It is not effective as a preventive measure.

  The present invention has been made to solve the above-described problems, and the chain cover is engaged with the sprocket even if the outer side of the chain is engaged with the arranged sprockets. It is an object of the present invention to provide a structure of a chain cover that can prevent the chain cover from being damaged and prevent problems such as dirt on the clothes of people around the chain.

  In order to solve the above-mentioned problems, the present invention is a structure of a chain cover having the following configuration.

In the structure of the chain cover of the present invention, a plurality of pairs of inner link plates spaced in the thickness direction are arranged so that the end portions in the length direction are adjacent to each other, and the length direction of the adjacent pair of inner link plates is The end portions are sandwiched by the pair of outer link plates from the outside in the thickness direction, and the pair of outer link plate ends and the pair of inner link plate ends are penetrated by pins, and a plurality of inner links are formed by the pins and the outer link plates. A chain cover covering a chain of continuous plates,
The chain cover, each independent outside link plate of said pair of chains, as well as arranged in pairs to face the respective outer surface of the outer link plate pairs,
The chain cover has a cylindrical shape in which an outer edge portion of the chain cover is formed larger than an outer edge portion of the outer link plate in an axial view of the pin, and the outer edge portion of the outer link plate is wrapped and fitted to the outer link plate. Protruding part of
The protruding position of the chain cover including the protruding portion to the inside of the outer link plate is outside the inner surface of the inner link plate, and when the sprocket meshes with the chain from one side and the other side in the inner link plate width direction. The structure of the chain cover, which is in a position where the sprocket is not caught .

  In the structure of the chain cover according to the present invention, the chain cover covers the periphery of the end of the pin exposed from the outer link plate and closes the periphery of the end of the pin from the outside on the side facing the outer link plate. It is preferable to be provided in the part.

  In the structure of the chain cover of the present invention, it is preferable that the outer edges of the chain cover provided on the outer link plates adjacent to each other in the chain continuous direction partially overlap each other when the chain cover is disposed on the outer link plate. .

  In the structure of the chain cover of the present invention, it is preferable that a portion where the outer edge portions of the chain cover partially overlap each other overlaps the central portion in the length direction of the inner link plate as viewed in the axial direction of the pin.

  In the structure of the chain cover according to the present invention, it is preferable that the chain cover is formed so as to project inwardly a latching portion that hangs around the tip of the outer link plate.

According to the structure of the chain cover of the present invention, the chain covers that are independent of the outer link plates of the pair of chains are disposed in pairs facing the outer side surfaces of the pair of outer link plates , and the chain The cover is formed in a cylindrical projection that has an outer edge portion of the chain cover larger than an outer edge portion of the outer link plate as viewed in the axial direction of the pin, and wraps around the outer edge portion of the outer link plate and fits to the outer link plate. The position of the chain cover that includes the protruding portion to the inside of the outer link plate is outside the inner surface of the inner link plate, and the sprocket is attached to the chain from one side and the other side in the width direction of the inner link plate. since the position where the sprocket is not caught when meshed, the outer well inside the chain sequence was sprocket meshes Be those sent me, it can prevent damage to the chain cover without chain cover biting its sprocket. Further, since the chain cover does not bite into the sprocket, there is no limit to the chain feed distance.

Also, since the outer edge of the pair of chain covers is formed larger than the outer edge of the outer link plate when viewed in the axial direction of the pins, oil can be prevented from covering the chain and surrounding the chain. Even if it is, the clothes can be prevented from getting dirty.
Further, in the structure of the chain cover of the present invention, the chain cover is provided with a cylindrical projecting portion that wraps around the outer edge portion of the outer link plate and fits to the outer link plate. The chain cover is in intimate contact with the outer link plate due to the fitting of the projecting portion, and the relative position of the chain cover with respect to the outer link plate is not displaced, and there is no backlash. Therefore, the chain cover is not easily detached from the chain. At the same time, the interior of the cylindrical projection can be used as a room for wrapping the entire outer link plate, and the oil such as grease attached to the outer link plate is completely covered so that the oil is around the chain. For example, even if there is a person, it is possible to prevent the clothes from getting dirty .

  At the same time, in the structure of the chain cover of the present invention, the chain cover opposes the outer link plate in a housing chamber that covers the periphery of the end of the pin exposed from the outer link plate and closes the periphery of the pin end from the outside. If it is provided on the side portion, even if oil such as grease on the outer plate oozes out from the end of the pin and is exposed, it can be received by the chain cover and kept from touching from the outside. It is possible to reliably prevent the surroundings from getting oil, and for example, even if there are people, it is possible to effectively prevent the clothes from getting dirty.

  In the structure of the chain cover of the present invention, if the chain cover is disposed on the outer link plate, the outer edges of the chain cover provided on the outer link plate adjacent in the chain continuous direction partially overlap each other. The overlapping part can further prevent the outside from touching the chain.

  In the structure of the chain cover according to the present invention, if the portion where the outer edges of the chain cover partially overlap each other overlaps the central portion in the length direction of the inner link plate when viewed in the axial direction of the pin, It is possible to surely prevent the outside link from being easily touched by the inner link plate.

  In the structure of the chain cover according to the present invention, if the chain cover is formed with a latching portion that protrudes inwardly, the tip of the chain wraps around the inside of the outer link plate. The cover can be easily attached / detached to / from the outer link plate, so that the work of attaching / changing the chain cover to / from the chain is facilitated, and the work load can be reduced.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIGS. 1-7 is the multi-story parking apparatus which concerns on one Embodiment of the chain cover of this invention.

  1 is an overall view of the multi-story parking device, FIG. 2 is a perspective view of the pallet of the multi-story parking device and the lifting device, FIG. 3 is a side view of the lifting device, and FIG. 4 is a chain cover on the chain. FIG. 5 is an explanatory view of the provided example, FIG. 5 is an explanatory view of the structure of the chain and the chain cover and their attached states, FIG. 6 (a) is a plan view seen from the side of the chain cover that covers the outer link plate, FIG. ) Is a side view of the chain cover, FIG. 7A is a side view seen from the length direction of the chain cover, and FIG. 7B is a sectional view taken along line IV-IV in FIG. is there.

  As shown in FIGS. 1-3, the multi-story parking apparatus 1 is comprised combining the some support | pillar 3a and the beam body 3b so that the several parking space 2 may be made inside.

  An automobile 6 is mounted on a pallet 4 that is a component of the multi-story parking apparatus 1 and is disposed in the parking space 2.

  The pallet 4 moves in the vertical direction with respect to the plurality of columns 3a and the beam body 3b of the multi-story parking apparatus 1, and as will be described later, the pallet 4 is moved in the left-right direction (in the horizontal direction). Are also going to move. By moving the pallet 4 up, down, left and right with the automobile mounted, the automobile 6 is positioned in the target parking space 2 and parked.

  The pallet 4 is moved up and down by the lifting drive by the lifting device 7, and the pallet 4 is thereby moved in the vertical direction. The lifting device 7 is provided on one side portion of the support frame body 8 that is substantially rectangular in plan view. Although not shown, the support frame 8 has a shape along the outer peripheral edge of the pallet 4 in plan view.

  The support frame body 8 is supported by the support column 3a and the beam body 3b in a state in which the support frame body 8 can travel on the rail member 9 provided along the left-right direction with respect to the support column 3a and the beam body 3b. The elevating device 7 and the pallet 4 are configured to be movable in the left-right direction by moving the support frame 8 supported in this way in the left-right direction (in the embodiment, along the short piece direction of the support frame 8).

  The elevating device 7 includes a circulation chain 12 that circulates between the driving side sprocket 10 and the driven side sprocket 11 that are disposed at positions near the longitudinal front and rear ends of the pallet 4 of the support frame 8, and advancing and retreating. An elevating chain 13 having one end 13 a fixed to the middle part 12 a of the upper path of the circulation chain 12 and the other end 13 b fixed to the pallet 4, and adjacent to the driven sprocket 11 and positioned outside the circulation chain 12. The first idle sprocket 14 that changes the feed direction of the elevating chain 13 in the horizontally opposite direction and the feed direction of the elevating chain 13 whose feed direction is changed in the opposite direction by the first idle sprocket 14 are further increased in the up and down direction. The second idle sprocket 15 to be changed and the driving sprocket 10 of the circulation chain 12 are given advancing / retreating driving force to move up and down Through En 13 and a lift driving unit 16 consisting of a motor 16a and a speed reduction mechanism 16b and the like lifting drive the pallet 4.

  The pallet 4 is fixed to the pallet 4 with the other ends 13b, 13b of the pair of right and left elevating chains 13, 13 in the front and rear, and fastened to the fixing part 17 with bolts and nuts, and the pallet 4 is suspended at four places. To go up and down. In order to drive these two pairs of lifting chains 13, 13, two pairs of driving side sprocket 10, driven side sprocket 11, and circulation chain 12 are provided on the left and right as shown in FIG.

  The left and right pairs of drive-side sprockets 10 and 10 are fixed to the same drive shaft 18 in the rotational direction, and the drive shaft 18 is driven forward / reversely by the elevating drive unit 16 to drive the drive side. The pallet 4 can be raised and lowered via the circulation chains 12 and 12 and the raising and lowering chains 13 and 13 circulating between the sprockets 10 and 10 and the driven sprockets 11 and 11.

  When the pallet 4 is at the lowest position, the chain cover 20 is attached to the elevating chains 13 and 13 along the path between the second idle sprocket 15 and the fixed portion 17, and passengers get on and off the automobile 6. At the same time, an occupant or other object is prevented from touching the elevating chain 13 directly. In addition, the chain cover 20 can be provided on the elevating chain 13 with a length longer than this path.

  A structure in which the chain cover 20 is provided on the lifting chain 13 will be described with reference to FIGS.

  The chain 13 used for the elevating chain has a plurality of pairs of inner link plates 21 and 21 spaced in the thickness direction arranged so that the end portions 21a and 21a in the length direction are adjacent to each other. The end portions 21a, 21a in the length direction of the inner link plates 21, 21 are sandwiched by the pair of outer link plates 22, 22 from the outside in the thickness direction, and the pair of outer link plates 22, 22 end portions 22a, 22a and the pair A chain in which inner link plate end portions 21 a and 21 a are penetrated by pins 23, and a plurality of inner link plates 21 are connected by the pins 23 and outer link plates 22, and a chain cover 20 that covers the chain 13 is provided. Yes.

  In this embodiment, in this embodiment, the inner link plate 21 and the outer link plate 22 both have a substantially bowl shape with the same shape, and are formed by punching a steel plate material or the like. A through-hole through which the pin 23 is inserted is formed in the lengthwise ends 21a and 22a of the inner link plate 21 and the outer link plate 22. The pin 23 is fixed to the outer link plate 22 by caulking. In addition, the pin 23 can be prevented from being detached from the outer link plate 22 by various configurations such as fitting a ring into the groove formed at the end or passing the split pin through the hole. Further, the chain 13 may be one using a long plate-shaped link plate in addition to the one using the saddle-shaped link plate.

  The chain 13 has a structure in which the pair of inner link plates 21 and 21 are integrated with a space therebetween. Specifically, a cylindrical portion through which a pin 23 is inserted between the pair of inner link plates 21 and 21. Are provided at the front and rear ends in the length direction, and this cylindrical portion is firmly fixed to the pair of inner link plates 21 and 21 by welding or the like to support them, and a sprocket is provided on the outer periphery of the cylindrical portion. A roller abutting on is disposed. The roller is configured not to protrude from the outer peripheral edge of the inner link plates 21 and 21 when the inner link plate is viewed in the axial direction of the cylindrical portion.

  As shown in FIG. 5, the chain covers 20, 20 of the chain 13 are arranged in pairs facing the outer side surfaces 22 b, 22 b of the pair of outer link plates 22, 22. The outer edge portions 24, 24 of the pair of chain covers 20, 20 are formed larger than the outer edge portions 22c, 22c of the outer link plates 22, 22 as viewed in the axial direction.

  In the embodiment, as shown in FIG. 6, the outer edge portions 24 and 24 of the chain covers 20 and 20 have a substantially oval shape.

  The chain covers 20, 20 cover the periphery of the end portion (pin end portion) 23 a of the pin 23 exposed from the outer link plate 22, and form an outer space 25 that forms a space for closing the periphery of the pin end portion 23 a from the outside. It is provided on the portion 20 a (back side) facing the link plate 22.

  In the embodiment, the storage chamber 25 is recessed from the back surface side 20a toward the front surface side 20b so as to simultaneously cover the pin end portions 23a, 23a exposed at the front and rear end portions 22a, 22a of the outer link plate 22, and from the back surface side 20a. It shows a space that looks like an ellipse. The outer shape of the storage chamber 25 bulges on the surface side 20 b of the chain cover 20.

  Further, when the chain cover 20 is disposed on the outer link plate 22, the outer edge portions 24 and 24 of the chain cover 20 provided on the outer link plate 22 adjacent in the continuous direction of the chain 13 are partially overlapped (one The outer edge portions 24 and 24 are spread in a bowl shape.

  In the embodiment, as shown in FIGS. 5 and 6 (particularly, (b)), the outer edge portion 24 of the chain cover 20 has one end portion 24a that is higher in the direction of the surface side 20b than the other end portion 24b in a side view. Thus, a step (boundary portion 24c) is formed. Since one end 24a of the outer edge 24 is higher than the other end 24b, when the chain cover 20 is provided on the outer link plate 22 continuous in the chain 13, the outer edges 24, 24 of the adjacent chain covers 20 are adjacent to each other. Even if they overlap, they do not interfere with each other, and the step is formed to be biased toward the one end 24a side of the outer edge 24. Therefore, even when the chain 13 is bent and the overlapping position changes, the outer edges 24, 24 collide with each other and interfere. There is nothing to do. The step boundary 24c may not be linear as shown in FIG. 5, but may be curved. For example, the step boundary 24c may have a shape along the outer edge of the other chain cover 20. That is, in the adjacent chain covers 20, 20, various shapes can be adopted as long as one peripheral edge of the overlapped outer edge portions 24, 24 does not hit the other chain cover 20.

  A portion 28 where the outer edge portions 24, 24 of the chain covers 20, 20 partially overlap each other overlaps the central portion in the length direction of the inner link plate 21 as viewed in the axial direction of the pin 23.

  Further, the chain covers 20 and 20 are formed by projecting inwardly the latching portions 26 that the top ends of the chain covers 20 and 22 wrap around and are latched.

  Further, the chain cover 20 is provided with a cylindrical projecting portion 27 that wraps around the outer edge portions 22c and 22c of the outer link plates 22 and 22 and is fitted to the outer link plates 22 and 22. In the embodiment, as shown in FIG. 7, the outer link plate 22 is fitted by the projecting portion 27, and the hooked end portion of the latching portion 26 is fitted to the inner side surface of the outer link plate 22 in the fitted state. To prevent the chain cover 20 from being removed from the outer link plate 22.

  According to the structure of the chain cover of the embodiment, since the chain covers 20, 20 are arranged in pairs so as to face the outer surfaces of the pair of outer link plates 22, 22, only the inside of the chain 13 is arranged on the arranged sprockets. Even if the outer side is meshed and sent, the chain cover 20 does not bite into the sprocket and damage to the chain cover 20 can be prevented. Further, since the chain cover 20 does not bite into the sprocket, the feeding distance of the chain 13 is not limited.

  Further, since the outer edge portions 24, 24 of the pair of chain covers 20, 20 are formed larger than the outer edge portions 22c, 22c of the outer link plates 22, 22 in the axial direction of the pin 23, the chain 13 is covered with the chain 13 For example, even if there is a person, the clothes can be prevented from getting dirty.

  At the same time, the outer cover plate 22, the chain cover 20, 20 covers the outer periphery of the pin 23, 23 exposed from the outer link plate 22, 22 and closes the outer periphery of the pin end portion from the outside. 22, even if oil such as grease from the outer link plates 22 and 22 oozes out from the ends of the pins 23 and 23 and is exposed, the chain cover 20 receives the oil. Therefore, it is possible to reliably prevent the oil around the chain 13 from being attached to the outside, and for example, to effectively prevent the clothes from getting dirty even if there is a person.

  In addition, when the chain cover 20 is disposed on the outer link plate 22, the outer edge portions 24 and 24 of the chain covers 20 and 20 provided on the outer link plates 22 and 22 adjacent in the continuous direction of the chain 13 partially overlap each other. Therefore, the external contact with the chain 13 can be more effectively prevented by the partially overlapping portion 28.

  Further, since the portion 28 where the outer edge portions 24, 24 of the chain cover 20 partially overlap each other overlaps the central portion in the length direction of the inner link plate 21 as viewed in the axial direction of the pin 23, the inner surface is likely to be oily. It is possible to reliably prevent the outside from touching the link plate.

  Further, since the chain cover 20 is formed with a latching portion 26 projecting inwardly, the tip of the chain cover 20 hangs around the inside of the outer link plate 22, so that the chain cover 20 is formed by the latching portion 26. The chain cover 20 can be easily mounted / removed, and the chain cover 20 can be easily mounted / replaced, thereby reducing the work load.

  In addition, since the chain cover 20 is provided with a cylindrical projection 27 that wraps around the outer edge of the outer link plate 22 and is fitted to the outer link plate 22, the chain cover 20 is attached by the fitting of the cylindrical projection 27. Since the cover 20 is in close contact with the outer link plate 22 and the relative position of the chain cover 20 with respect to the outer link plate 22 is not shifted and rattling is eliminated, the chain cover 20 is not easily detached from the chain 13. At the same time, the interior of the cylindrical projection 27 can be used as a room for wrapping the entire outer link plate 22, and oil such as grease attached to the outer link plate 22 is completely covered. Can be more reliably prevented from being attached to things around it, for example, even if there is a person, the clothes can be prevented from being stained.

  It should be noted that the structure of the chain cover of the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention. The structure of the chain cover of the present invention can be used for the raising and lowering chain of the multilevel parking apparatus of the embodiment, and can be used in any field as long as it is a chain for driving force transmission and where dirt adheres to the outside. It can also be used for other chains.

1 is an overall perspective view of a three-dimensional parking apparatus using a chain in which a chain cover structure of the present invention is adopted. It is a perspective explanatory drawing of the pallet of the three-dimensional parking apparatus of FIG. 1, and its raising / lowering apparatus. It is a side view of the raising / lowering apparatus of a pallet. It is explanatory drawing of the example which provided the chain cover in the chain. (A), (b) is explanatory drawing of the structure of a chain and a chain cover, and each state before those attachments after attachment. (A) is the top view seen from the side which covers the outer link plate of a chain cover, (b) is the side view of the chain cover. (A) is the side view seen from the length direction of the chain cover, (b) is sectional drawing which follows the IV-IV line of (a) of FIG. It is explanatory drawing of the example which provided the chain cover in the conventional chain.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Three-dimensional parking apparatus 2 Parking space 3a Support | pillar 3b Beam body 4 Pallet 6 Car 7 Pallet raising / lowering device 8 Support frame body 9 Rail member 10 Drive side sprocket 11 Driven side sprocket 12 Circulating chain 12a Upper path middle part 13 Lifting chain 13a Chain one end 13b Chain other end 14 First idle sprocket 15 Second idle sprocket 16 Lifting drive 16a Motor 16b Reduction mechanism 17 Fixing 18 Drive shaft 20 Chain cover 20a Back side 20b Front side 21 Inner link plate 21a End 22 in the longitudinal direction of the inner link plate 22 Outer link plate 22a End 22b in the longitudinal direction of the outer link plate Outer surface 22c of the outer link plate Outer edge 23 of the outer link plate Pin 23a Pin end 24 Chain cover Outer edge 24a One end portion 24b outer edge and the other end portion 24c outer edge the outer edge portion overlap each other part of the projection 28 chain cover of the boundary portion 25 accommodating chamber 26 hooking stopper portion 27 cylindrical in edge

Claims (5)

A plurality of pairs of inner link plates spaced in the thickness direction are arranged so that the end portions in the length direction are adjacent to each other, and the length direction ends of the adjacent pair of inner link plates are outside in the thickness direction. A chain that is sandwiched by a pair of outer link plates , covers the chain in which the end of the pair of outer link plates and the end of the pair of inner link plates are penetrated by pins, and a plurality of inner link plates are continuous by the pins and the outer link plates A cover ,
The chain cover, each independent outside link plate of said pair of chains, as well as arranged in pairs to face the respective outer surface of the outer link plate pairs,
The chain cover has a cylindrical shape in which an outer edge portion of the chain cover is formed larger than an outer edge portion of the outer link plate in an axial view of the pin, and the outer edge portion of the outer link plate is wrapped and fitted to the outer link plate. Protruding part of
The protruding position of the chain cover including the protruding portion to the inside of the outer link plate is outside the inner surface of the inner link plate, and when the sprocket meshes with the chain from one side and the other side in the inner link plate width direction. The structure of the chain cover, which is in a position where the sprocket is not caught .   The chain cover is characterized in that a housing chamber that covers the periphery of the end of the pin exposed from the outer link plate and closes the periphery of the end of the pin from the outside is provided in a portion facing the outer link plate. The structure of the chain cover according to claim 1.   The chain cover according to claim 1 or 2, wherein the outer edges of the chain cover provided on the outer link plates adjacent to each other in the chain continuous direction partially overlap each other when the chain cover is disposed on the outer link plate. Structure.   The structure of the chain cover according to claim 3, wherein a portion where the outer edge portions of the chain cover partially overlap each other overlaps a central portion in the length direction of the inner link plate as viewed in the axial direction of the pin.   The chain cover structure according to any one of claims 1 to 4, wherein the chain cover is formed with a latching portion that protrudes inwardly and engages with the tip of the chain link on the inner side of the outer link plate. .

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