JP2012101890A - Meshing chain type advancing retreating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a meshing chain type advancing retreating apparatus that achieves a low floor structure of an apparatus while avoiding the increase of the size of the apparatus, and that avoids the increase of installment cost of a chain drive motor, and further improves usage efficiency of drive energy of a meshing chain while smoothly travelling the meshing chain.SOLUTION: The meshing chain type advancing retreating apparatus includes a guide bent part 143 where a chain storage guide 141 forms a linear guide portion 141A having guide length LA, which is equal to or longer than a plate pitch P, an arc-shaped guide portion 141B of an arc-shaped chain advancing end, and an arc-shaped guide portion 141C of an arc-shaped chain retreating end.

Description

  The present invention relates to an interlocking chain type advance / retreat operation device that moves a driven body forward and backward for use in manufacturing equipment in various manufacturing fields, transport equipment in the transport field, nursing care equipment in the medical and welfare field, stage equipment in the art field, and the like. .

Conventionally, as a chain storage structure for storing a band such as a chain, a curved storage portion (for example, see Patent Document 1), a winding wheel for winding a chain in a spiral shape (for example, see Patent Document 2), bending There are slits for roller guides (for example, see Patent Document 3), and spiral guides (for example, see Patent Document 4) composed of a linear guide part or an arcuate guide part.
Further, in the above-described meshing chain type advance / retreat operation device, as shown in FIG. 5, a pair of meshing chains 210, 210 that are meshed with each other and integrally driven, so-called chuck chains can be freely moved in and out of the chain storage guide 241. A chain storage guide plate 240 for storage is provided.
Further, as shown in FIG. 6, in the above-described chain storage guide plate 240, the guide bent portion 243 of the chain storage guide 241 is formed in an arc shape so that the chain storage guide 241 is placed in an area in the plate surface of the chain storage guide plate 240. Forming.

Japanese Patent Laid-Open No. 8-169693 (see paragraph [0021], FIG. 1) JP-A-8-32494 (see paragraph [0021], FIG. 1) Japanese Patent Laid-Open No. 11-278797 (see paragraph [0025], FIG. 1) Japanese Unexamined Patent Publication No. 7-127332 (see paragraph [0006], FIG. 1)

  However, in the meshing chain type advance / retreat operation device employing the above-described winding wheel or spiral guide, the chain storage guide is formed in a winding shape within the plate surface of the chain storage guide plate in plan view, and the meshing chain is spiraled. In order to secure the chain storage length by increasing the space occupied by the winding wheel along the winding axis direction, the ratio of the guide formation area occupied by the chain storage guide in the plate surface area is increased. Moreover, there is a problem in that the size of the chain accommodation guide plate along the plate thickness direction is increased to significantly increase the size of the meshing chain type advance / retreat operation device.

  Further, as shown in FIGS. 5 and 6, in the meshing chain type advance / retreat operation device 200 according to the comparative example, the guide bent portion 243 of the chain storage guide 241 is formed only by the arcuate guide portion. The polygonal movement (cordal action) of the meshing chain 210 is manifested to hinder the chain travel in the chain storage guide 241 and the contact resistance between the meshing chain 210 and the chain storage guide 241 according to the accumulated driving moment of the meshing chain 210. This causes a problem that smooth chain running becomes difficult.

In addition, even if the high-power chain drive motor is installed and the meshing chain 210 is run in anticipation of the contact resistance between the meshing chain 210 and the chain storage guide 241 generated according to the accumulation of the driving moment of the meshing chain 210, the contact resistance. In other words, the drive energy consumed according to the power consumption is wasted, which increases the installation cost of the high-power chain drive motor and makes it difficult to improve the drive energy utilization efficiency. .
Further, as shown in FIG. 6, the curvature radius R4 of the chain storage track in the arcuate guide portion 243 constituting the guide bending portion 243 of the chain storage guide 241 is increased to the curvature radius R5 so that the polygonal movement during the meshing chain travel is performed. In order to avoid this, since the size of the guide formation region S4 is increased to the size of the guide formation region S5 within the plate surface of the chain storage guide plate 240, the size of the chain storage guide plate 240 is increased and the meshing chain type advance / retreat operation is performed. There is a problem that it is difficult to lower the floor of the apparatus 200.

  Therefore, the technical problem to be solved by the present invention, that is, the object of the present invention is to avoid an increase in the size of the apparatus, to realize a low floor of the apparatus, and to smoothly run the meshing chain and drive the chain. It is an object of the present invention to provide a meshing chain type advance / retreat operation device that avoids an increase in the installation cost of a motor and further improves the utilization efficiency of driving energy of the meshing chain.

  First, the meshing chain type advance / retreat operation device according to the first aspect of the present invention includes an inner link unit composed of a pair of hook-shaped inner teeth plates spaced apart in the chain width direction, and a hook-shaped outer tooth adjacent to the inner link unit. A large number of plates are connected in the longitudinal direction of the chain by a pair of front and rear connecting pins press-fitted into a pair of front and rear pin holes provided on each of the hook-shaped inner tooth plate and the hook-shaped outer tooth plate, and are arranged in opposition to each other. In this state, the pair of meshing chains that are rigidly integrated and can be separated from each other to be branched, a drive sprocket that drives the meshing chain, and the meshing chain attached to the meshing chain according to the forward and backward movement of the meshing chain. A driven body that is driven forward and backward, and a meshing chain that branches off from the driving sprocket, respectively. A chain storage guide plate that forms a pair of chain storage guides that are stored in a freely retractable manner, and the chain storage guides are arranged between hook-like inner tooth plates and hook-like outer tooth plates that are adjacent to each other along the longitudinal direction of the chain. A linear guide portion having a guide length greater than each plate pitch and defining a linear chain storage track portion, and connected to the meshing chain entry end of the linear guide portion and arc-shaped chain entry end storage A chain entry end side arcuate guide portion that defines the track portion, and a chain exit end side arcuate shape that is connected to the meshing chain exit end of the linear guide portion and defines the arcuate chain exit end side storage track portion By having a guide bending portion that forms a guide portion, the above-mentioned problems are solved. It is that persists.

  The invention according to claim 2 is the meshing chain type advance / retreat operation device according to claim 1, in which the respective curvature radii of the chain entry end side storage track portion and the chain exit end side storage track portion are the mesh chain. The above-mentioned problem is further solved by being larger than the bending radius.

  An interlocking chain type advance / retreat operation device according to claim 1 of the present invention includes an inner link unit composed of a pair of hook-shaped inner tooth plates spaced apart in the chain width direction, and a hook-shaped outer tooth plate adjacent to the inner link unit. A state in which a large number of front and rear connecting pins press-fitting into a pair of front and rear pin holes provided on each of the hook-shaped inner tooth plate and the hook-shaped outer tooth plate are coupled in the longitudinal direction of the chain and meshed with each other so as to face each other. And a pair of meshing chains that can be separated from each other and can be branched, a drive sprocket that drives the meshing chain, and a forward / backward drive that is attached to the meshing chain according to the forward / backward movement of the meshing chain. The driven body to be driven and the meshing chain branched off from the driving sprocket are respectively shown and raised. In addition to being able to move the driven body forward and backward according to the forward and backward movement of the meshing chain, it has the following unique characteristics. The special effect corresponding to the structure of can be produced.

  That is, in the meshing chain type advance / retreat operation device according to the first aspect, the chain storage guide is equal to or more than the plate pitch of each of the hook-like inner tooth plates and the hook-like outer tooth plates adjacent to each other along the longitudinal direction of the chain. A linear guide portion that defines a linear chain storage track portion and a linear guide portion that is connected to the meshing chain entry end of the linear guide portion and defines an arcuate chain entry end side storage track portion. A chain entry end side arcuate guide portion, and a chain exit end side arcuate guide portion that is connected to the meshing chain withdrawal end of the linear guide portion and defines an arcuate chain exit end side storage track portion. By having the guide bent portion formed, the guide bent portion consisting only of the arcuate guide portion Compared with the case where the radius of curvature is increased, the size of the device is increased in order to avoid an increase in the guide formation area of the chain storage guide occupying the plate surface of the chain storage guide plate and to avoid polygonal movement of the meshing chain at the guide bending portion. In addition, it is possible to reduce the floor of the apparatus, to smoothly run the meshing chain, to avoid an increase in the installation cost of the chain drive motor, and to improve the utilization efficiency of the driving energy of the meshing chain.

  Further, the meshing chain type advance / retreat operation device according to claim 2 has the chain entry end side storage track portion and the chain exit end side storage track portion in addition to the effect exerted by the mesh chain type advancement / retraction operation device according to claim 1. Even if the bending radius of the meshing chain is limited because the respective curvature radii are larger than the bending radius of the meshing chain, the linear guide portion, the chain entry end side arc-shaped guide portion, and the chain exit In order to avoid clogging of the meshing chain, that is, accumulation of drive moment due to mutual engagement between the inner wall of the chain storage guide and the meshing chain at the bent portion of the guide formed by the end side arcuate guide portion, the meshing chain can be run more smoothly. Ensuring efficient use of drive energy required for forward and backward drive of meshing chain It is possible to above.

The front view of the meshing chain type advance / retreat operation device according to the present invention. The perspective view which shows the decomposition | disassembly assembly state of a meshing chain. The partial top view of a chain storage guide. The top view which shows the bending state of a meshing chain. The front view of the meshing chain type advance / retreat operation apparatus which concerns on a comparative example. The partial top view of the chain storage guide which concerns on a comparative example.

The interlocking chain type advance / retreat operation device of the present invention includes an inner link unit composed of a pair of hook-like inner tooth plates spaced apart in the chain width direction, and a hook-like outer tooth plate adjacent to the inner link unit. And a pair of front and rear connecting pins that are press-fitted into a pair of front and rear pin holes provided in each of the hook-shaped external tooth plates, and are connected together in the longitudinal direction of the chain, and are integrally stiffened in a state of being opposed to each other. And a pair of meshing chains that can be separated from each other and branched, a driving sprocket that drives the meshing chain, a driven body that is attached to the meshing chain and is driven to advance and retract according to the advancement and retraction operation of the meshing chain, A pair of chains for retracting and retracting the meshing chains that are branched off the drive sprocket. The chain storage guide plate has a guide length that is equal to or greater than the plate pitch of the hook-shaped inner tooth plates and the hook-shaped outer tooth plates that are adjacent to each other along the longitudinal direction of the chain. A linear guide portion that defines a linear chain storage track portion and a chain entry end that is connected to the meshing chain entry end of the linear guide portion and defines an arcuate chain entry end side storage track portion Bending portion that forms a side arcuate guide portion and a chain exit end side arcuate guide portion that is connected to the meshing chain withdrawal end of the linear guide portion and defines an arcuate chain withdrawal end side storage track portion Any specific embodiment may be used as long as it has It does not matter, et al.
Further, in the meshed chain type advance / retreat operation device of the present invention, the chain storage guide has a plurality of guide bent portions including a linear guide portion, a chain entry end side arcuate guide portion, and a chain exit end side arcuate guide portion. It may be configured.

  In addition, regarding the specific shapes of the hook-shaped inner tooth plate and the hook-shaped outer tooth plate used in the meshing chain type advance / retreat operation device of the present invention, the same type of plates facing each other are meshed and integrated. In addition, any shape may be used as long as it is separated from each other and branches off.

Further, the “bending radius of the meshing chain” of the meshing chain type advance / retreat operation device of the present invention is in line with the plate width direction of each of the hook-shaped inner tooth plate and the hook-shaped outer tooth plate when the meshing chain is bent. It means the radius of curvature of the arc-shaped chain center line formed by connecting the plate centers with hook-like inner tooth plates and hook-like outer tooth plates that are adjacent to each other along the longitudinal direction of the chain.
In the meshing chain type advance / retreat operation device of the present invention, the “meshing chain entry end” and the “meshing chain withdrawal end” corresponding to both ends of the linear guide portion are specified according to an arbitrary chain traveling direction. This means the “end” of the linear guide portion.
That is, when the chain is stored in the chain storage guide, the chain travel direction is opposite between when the chain is stored and when the chain is sent out from the chain storage guide. The exit end side arcuate guide portions are defined by being interchanged with each other in accordance with the chain traveling direction.
More specifically, the arcuate guide portion, which was referred to as the “chain entry end side arcuate guide portion” when the chain is stowed, is the guide portion that takes the “chain exit end side arcuate guide portion” when the chain is delivered. The arcuate guide portion, sometimes referred to as the “chain exit end side arcuate guide portion”, is a guide portion referred to as the “chain entry end side arcuate guide portion” when the chain is stored.

  Further, the meshing chain type advance / retreat operation device of the present invention has no problem in the advance / retreat operation even if the installation surface is a floor surface in a stationary installation form or a ceiling surface in a suspended installation form. Even if it is a vertical wall surface in a cantilever support form, there is no problem in the above-described advance / retreat operation.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An interlocking chain type advance / retreat operation device 100 according to an embodiment of the present invention will be described below with reference to FIGS.
Here, FIG. 1 is a front view of a meshing chain type advance / retreat operation device 100 according to the present invention, FIG. 2 is a perspective view showing an exploded assembly state of a pair of meshing chains 110, 110, and FIG. FIG. 4 is a partial plan view of the chain storage guide, and FIG. 4 is a plan view showing a bent state of the meshing chain 110.

  First, as shown in FIGS. 1 and 2, the meshing chain type advance / retreat operation device 100 of this embodiment includes an inner link unit 111 </ b> U composed of a pair of hook-shaped inner teeth plates 111, 111 spaced apart in the chain width direction W. A pair of front and rear connecting pins in which the hook-shaped external tooth plate 112 adjacent to the inner link unit 111U is press-fitted into a pair of front and rear pin holes provided in the hook-shaped internal tooth plate 111 and the hook-shaped external tooth plate 112, respectively. 113 are coupled in the longitudinal direction of the chain by a pair of 113, and a pair of meshing chains 110, 110 that are rigidly integrated with each other while being opposed to each other and are disengaged from each other and can be branched, and the meshing chain 110 is driven. The drive sprocket 120 and the meshing chain 110 are attached to the meshing chain 110. A chain storage guide plate formed with a pair of chain storage guides 141 for retractably storing the driven body 130 that is driven forward and backward in accordance with the retraction operation and the meshing chain 110 that is disengaged from the driving sprocket 120 and branched. 140 as a basic device configuration, and is installed in a stationary state on the installation surface G, and the driven body 130 carrying a transported object (not shown) such as a heavy object is moved up and down in parallel to the installation surface G. It is something to be made.

  That is, in the meshing chain type advance / retreat operation device 100 of this embodiment, as shown in FIGS. 1 and 2, the pair of meshing chains 110, 110 are connected to the hook-shaped inner tooth plate 111 and the hook-shaped inner tooth plate 111. A hook 114 for connecting and fixing the hook-shaped external tooth plate 112 that is shifted in the longitudinal direction of the chain in the chain width direction W, and a connecting pin 113 that is connected and fixed to the hook-shaped external tooth plate 112 in the chain width direction W. Furthermore, by being rigidly integrated in a state where they are meshed with each other on the installation surface G so as to be opposed to each other, and are disengaged from each other so that they can be branched, driven bodies are driven according to the raising and lowering operations of the pair of meshing chains 110, 110. 130 is moved up and down.

Next, a specific form of the chain storage guide 141, which is the most characteristic of the above-described meshing chain type advance / retreat differential device 100 of this embodiment, will be described in detail with reference to FIGS.
As shown in FIGS. 1 to 4, the meshing chain type advance / retreat operation device 100 according to the present embodiment includes a chain storage guide 141 and hook-shaped inner teeth plates 111 adjacent to each other along the longitudinal direction of the chain. A linear guide portion 141A that has a guide length LA that is equal to or greater than the plate pitch P of the plates 112 and that defines a linear chain storage track portion 142A, and is connected to the meshing chain entry end of the linear guide portion 141A. And an arcuate chain entry end side storage track portion 142B that is connected to the chain entry end side arcuate guide portion 141B and the meshing chain exit end of the linear guide portion 141A and the arcuate chain exit end side Chain retracting end side arcuate guide portion 14 defining the storage track portion 142C The chain storage occupying the plate surface of the chain storage guide plate 140 as compared with the case where the radius of curvature of the guide bending portion consisting only of the arcuate guide portion is increased by having the guide bending portion 143 formed with C. In order to avoid an increase in the guide formation area of the guide 141 and to avoid the polygonal movement of the meshing chain 110 in the guide bent portion 143, the increase in the size of the device is avoided and the floor of the device is reduced, and the meshing chain is smoothly formed. 110 is caused to travel, while avoiding an increase in the installation cost of the chain drive motor, and further, the use efficiency of the drive energy of the meshing chain 110 is improved.

  Further, in the meshing chain type advance / retreat operation device 100 according to the present embodiment, as shown in FIGS. 3 and 4, the curvature radii R1 of the chain entry end side storage track portion 142B and the chain exit end side storage track portion 142C, R2 is the bending radius of the meshing chain 110, that is, when the meshing chain 110 is bent, the plate center along the plate width direction of each of the hook-shaped inner tooth plate 111 and the hook-shaped outer tooth plate 112 is along the chain longitudinal direction. The bending radius of the meshing chain 110 is larger than the radius of curvature R3 of the arc-shaped chain center line CL formed by connecting the hook-shaped inner tooth plates 111 and the hook-shaped outer tooth plates 112 to each other. Even if it is restricted, the straight guide part 141A, the chain entry Accumulation of driving moment due to clogging of the meshing chain 110, that is, the inner wall of the chain storage guide 141 and the mutual engagement of the meshing chain 110 at the guide bent portion 143 including the side arcuate guide portion 141B and the chain withdrawal end side arcuate guide portion 141C. In order to avoid this, the meshing chain 110 travels more smoothly, and the use efficiency of the driving energy required for the forward / backward drive of the meshing chain 110 is reliably improved.

  The meshing chain type advance / retreat operation device 100 of the present embodiment thus obtained includes an inner link unit 111U composed of a pair of hook-shaped inner teeth plates 111 and 111 spaced apart in the chain width direction W, and the inner link unit. The hook-shaped external tooth plate 112 adjacent to 111U is formed in the longitudinal direction of the chain by a pair of front and rear connecting pins 113 that are press-fitted into a pair of front and rear pin holes provided in the hook-shaped internal tooth plate 111 and the hook-shaped external tooth plate 112, respectively. A pair of meshing chains 110, 110 that are rigidly integrated with each other in a state where they are meshed with each other and are opposed to each other, and are disengaged from each other and can be branched, and a driving sprocket 120 that drives the meshing chain 110, It is attached to the meshing chain 110 to respond to the forward / backward movement of the meshing chain 110. And a chain storage guide plate 140 formed with a pair of chain storage guides 141 for retractably storing the meshing chains 110 which are separated from the drive sprocket 120 and branch off. The chain storage guide 141 has a guide length LA that is equal to or greater than the plate pitch P of the hook-shaped inner tooth plates 111 and the hook-shaped outer tooth plates 112 that are adjacent to each other along the longitudinal direction of the chain, and a linear chain storage track. A linear guide portion 141A that defines the portion 142A, and a chain entry end side arcuate guide that is connected to the meshing chain entry end of the linear guide portion 141A and that defines the arcuate chain entry end side storage track portion 142B Part 141B and linear guide part 14 By having a guide bent portion 143 that is connected to the meshing chain withdrawal end of A and that forms a chain withdrawal end side arcuate guide portion 141C that defines an arcuate chain withdrawal end side storage track portion 142C. The increase in the size of the device is avoided, the floor of the device is lowered, the meshing chain 110 is smoothly run, the increase in the installation cost of the chain drive motor is avoided, and the use efficiency of the driving energy of the meshing chain 110 is further reduced. The effect is enormous.

100, 200 ... meshing chain type advance / retreat operation device 110, 210 ... meshing chain 111 ... hook-shaped internal tooth plate 112 ... hook-shaped external tooth plate 113 ... connecting pin 114 ... bushing 120 , 220 ... Drive sprocket 130, 230 ... Driven object 140, 240 ... Chain storage guide plate 141, 241 ... Chain storage guide 141A ... Linear guide portion 141B ... Chain entry end Side arcuate guide portion 141C ... Chain exit end side arcuate guide portion 142 ... Chain storage track 142A ... Linear chain storage track portion 142B ... Arc-shaped chain entry end side storage track portion 142C・ ・ ・ Arrow-shaped chain exit end side storage track portion 143, 24・ ・ ・ Guide bending part CL ・ ・ ・ Arc-shaped chain center line G ・ ・ ・ Installation surface LA ・ ・ ・ Guide length P ・ ・ ・ Plate pitch R1, R2, R3, R4, R5 ・ ・ ・ Radius of curvature S4, S5・ ・ ・ Guide formation area W ・ ・ ・ Chain width direction

Claims (2)

An inner link unit composed of a pair of hook-shaped inner tooth plates spaced apart in the chain width direction and a hook-shaped outer tooth plate adjacent to the inner link unit are provided on each of the hook-shaped inner tooth plate and the hook-shaped outer tooth plate. A large number of connecting pins in the longitudinal direction of the chain are connected by a pair of front and rear connecting pins that are press-fitted into a pair of front and rear pin holes that are engaged with each other so as to be rigidly integrated and disengaged from each other so that they can be branched. A pair of meshing chains, a driving sprocket that drives the meshing chain, a driven body that is attached to the meshing chain and that is driven to advance and retreat in accordance with the advancing and retreating operation of the meshing chain, and that branches off the driving sprocket A chain formed with a pair of chain storage guides for retracting and retracting each meshing chain. A interlocking chain type forward and backward actuating device and a storage guide plate,
The chain storage guide has a guide length that is equal to or longer than the respective plate pitches of hook-like inner tooth plates and hook-like outer tooth plates that are adjacent to each other along the longitudinal direction of the chain, and defines a linear chain storage track portion. A linear guide portion; a chain entry end side arcuate guide portion that is connected to the meshing chain entry end of the linear guide portion and defines an arcuate chain entry end side storage track portion; and the linear guide portion And a guide bent portion that is connected to the meshing chain retracting end and has a chain retracting end side arcuate guide portion that defines an arcuate chain retracting end side storing track portion. Chain type advance / retreat actuator.   2. The meshing chain type advance / retreat operation device according to claim 1, wherein a radius of curvature of each of the chain entry end side storage track portion and the chain exit end side storage track portion is larger than a bending radius of the meshing chain.

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