JP2014148383A - Roller chain elongation detection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roller chain elongation detection device in which a height dimension can be reduced during no use when roller chain elongation is not detected, and protrusions for performing roller chain elongation detection can be prevented from being deformed by an external force.SOLUTION: The roller chain elongation detection device comprises: a housing 1 which includes three pairs of protrusions 2b, 2c, protrusions 3b, 3c and protrusions 4b, 4c which are provided, respectively, in association with a pitch between rollers provided in a roller chain, have pitches different from each other and detect roller chain elongation, and in which all the three pairs of protrusions 2b, 2c, protrusions 3b, 3c and protrusions 4b, 4c can be accommodated; and operation means including a first handle 5, a second handle 6, a third handle 7 and the like for operating a pair of protrusions, among the three pairs of protrusions 2b, 2c, protrusions 3b, 3c and protrusions 4b, 4c so as to protrude outwards from the housing 1.

Description

  The present invention relates to a roller chain elongation detection device used to detect whether a roller chain such as a handrail drive chain of a passenger conveyor has reached a use limit.

  Roller chains such as handrail drive chains for passenger conveyors generally stretch while the passenger conveyor is operating. When this elongation increases, smooth chain conduction cannot be performed. Therefore, it is necessary to periodically measure the elongation of the roller chain and replace it with a new roller chain when it is determined that the elongation has been regarded as the use limit of the roller chain. The elongation of the roller chain is generated by increasing the gap between the sliding surfaces of the pins constituting the roller chain and the corresponding bushes.

  FIG. 5 is a view showing a conventional roller chain elongation detector. The elongation detector shown in FIG. 5 is disclosed in Patent Document 1. As shown in FIG. 5, the conventional elongation detecting tool is a flat base 40 and is connected to the base 40 and arranged on one side of the base 40, and is related to the roller pitch of the first roller chain. A pair of projections 41a and 41b formed in this manner, and a second roller chain that is connected to the base body 40 and disposed on the other side of the base body 40 and has a roller pitch different from that of the first roller chain described above. And another pair of protrusions 42a and 42b formed in relation to the roller pitch.

  When detecting the elongation of the first roller chain, is the protrusion 41b inserted between the adjacent rollers on the other side with, for example, the protrusion 41a inserted between the adjacent rollers on the one side of the first roller chain? Will be confirmed. If the protrusion 41b is inserted between the adjacent rollers on the other side, the first roller chain is stretched to reach the use limit, and it is determined that the first roller chain needs to be replaced. When the protrusion 41b is not inserted between adjacent rollers on the other side and the protrusion 41b contacts the roller, the extension of the first roller chain has not reached the use limit, and the replacement of the first roller chain It is judged unnecessary.

  The second roller chain elongation detection operation with different roller pitches is also performed using the protrusions 42a and 42b, as in the case of the first roller chain elongation detection described above.

Japanese Patent Laid-Open No. 11-254085

  Although the above-described prior art can be adapted to detect the elongation of two roller chains having different roller pitches, it has a pair of protrusions 41a and 41b on one side of the base 40 and another one on the other side. Since the pair of protrusions 42a and 42b are provided, the height dimension including the protrusions 41a, 41b, 42a and 42b is increased. That is, in the conventional technology, the shape becomes large, and the form up to the stretch detection site tends to be complicated. Further, since the protrusions 41a, 41b, 42a, 42b are exposed to the outside, when any external force is applied to these protrusions 41a, 41b, 42a, 42b, the protrusions 41a, 41b, 42a, 42b There is a possibility that the protrusion to which the external force is applied may be deformed, and there is a problem in terms of durability.

  The present invention has been made based on the actual situation in the above-described prior art. The purpose of the present invention is to support the detection of the elongation of a plurality of roller chains having different roller pitches, and when not used when the detection of the elongation of the roller chain is not performed. Another object of the present invention is to provide a roller chain elongation detecting device capable of reducing the height dimension and preventing deformation due to an external force of a protrusion for detecting elongation of the roller chain.

  In order to achieve the above object, the roller chain elongation detecting device according to the present invention is provided in relation to the pitch between the rollers provided in the roller chain, has different pitches, and the elongation of the roller chain is increased. In the roller chain elongation detecting device having a plurality of pairs of protrusions to be detected, a storage member capable of storing all of the plurality of pairs of protrusions, and storing any one pair of protrusions of the plurality of pairs of protrusions And an actuating means that is actuated so as to protrude from the member to the outside.

  According to the present invention, any one of the plurality of pairs of protrusions is selectively protruded to the outside of the storage member via the operating means, thereby making it possible to detect the elongation of a plurality of roller chains having different roller pitches. be able to. Further, when the roller chain elongation is not detected, the height dimension can be reduced by storing all of the plurality of pairs of protrusions in the storage member via the operating means. As a result, the present invention can be made compact when not in use, and the convenience in carrying can be improved as compared with the prior art. Further, according to the present invention, in a state where all of the plurality of pairs of protrusions are stored in the storage member, all of the protrusions are not exposed to the outside, and external force can be prevented from being applied to these protrusions. Thereby, this invention can prevent the deformation | transformation of the protrusion by external force, and can improve durability compared with the past.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows one Embodiment of the elongation detection apparatus of the roller chain which concerns on this invention, (a) A figure is a top view, (b) A figure is a front view, (c) A figure is a bottom view, (d) A figure is a side view. It is. It is a figure which shows an example of operation | movement of this embodiment, (a) A figure is a top view, (b) A figure is a front view, (c) A figure is a bottom view, (d) A figure is a side view. It is a figure which shows the elongation detection operation | work of a roller chain performed using this embodiment, and is a figure which shows the state considered that the elongation does not arise in a roller chain. It is a figure which shows the elongation detection operation | work of a roller chain performed using this embodiment, and is a figure which shows the state when the elongation considered to be a use limit is produced in the roller chain. It is a figure which shows the conventional elongation detector of a roller chain.

  Embodiments of a roller chain elongation detecting device according to the present invention will be described below with reference to the drawings.

  1A and 1B are diagrams showing an embodiment of a roller chain elongation detecting device according to the present invention. FIG. 1A is a plan view, FIG. 1B is a front view, FIG. 1C is a bottom view, and FIG. Is a side view.

  In this embodiment, a plurality of pairs of protrusions are provided in association with the pitch between rollers provided in a roller chain such as a handrail drive chain of a passenger conveyor and have different pitches to detect the elongation of the roller chain. It has. For example, as shown in FIG. 1, three pairs of protrusions including a pair of protrusions 2b and 2c, another pair of protrusions 3b and 3c, and another pair of protrusions 4b and 4c are provided.

  Further, in the present embodiment, a housing member capable of housing all of the above-described three pairs of protrusions 2b and 2c, protrusions 3b and 3c, and protrusions 4b and 4c, for example, a housing 1 formed in a hollow rectangular parallelepiped shape. I have.

  In the present embodiment, any one of the three pairs of protrusions 2b and 2c, protrusions 3b and 3c, and protrusions 4b and 4c protrudes from the housing 1 to the outside, that is, downward from the housing 1. There is provided an actuating means that is actuated.

  The protrusions 2b and 2c, the protrusions 3b and 3c, and the protrusions 4b and 4c described above are composed of a plurality of gauge components housed in the housing 1 so as to be movable. That is, the first gauge 2, the second gauge 3, and the third gauge 4 are accommodated in the housing 1, and the first gauge 2 includes a base 2a that is guided in the vertical direction in the housing 1, and the base 2a. The above-described pair of protrusions 2b and 2c are provided below the base body 2a and provided integrally with the base body 2a. Similarly, the second gauge 3 includes a base body 3a that is guided in the vertical direction within the housing 1, and the pair of protrusions 3b that are disposed below the base body 3a and provided integrally with the base body 3a. It consists of 3c. The third gauge 4 is also a base 4a that is guided in the vertical direction in the housing 1, and the pair of protrusions 4b and 4c that are disposed below the base 4a and provided integrally with the base 4a. It consists of.

  For example, the height position of the lower end of the base 2a of the first gauge 2, the height position of the lower end of the base 3a of the second gauge 3, and the height position of the lower end of the base 4a of the third gauge 4 are matched. The height of the base of the second gauge 3 is set higher than the height of the base 2a of the first gauge 2, and the height of the base 4a of the third gauge 4 is set to the height of the base 3a of the second gauge 3. It is set higher than the dimensions. In addition, both side portions of the base 2a of the first gauge 2, both sides of the base 3a of the second gauge 3, and both sides of the base 4a of the third gauge 4 are formed on both inner side surfaces of the housing 1. It inserts in the part, ie, the groove parts 20 and 21, and is guided by these groove parts 20 and 21 in the up-down direction.

  Further, the above-described projections 2b and 2c, projections 3b and 3c, and projections 4b and 4c are set to have the same shape, for example.

  Further, the above-mentioned operating means for operating any one of the three pairs of protrusions 2b and 2c, the protrusions 3b and 3c, and the protrusions 4b and 4c to protrude from the housing 1 to the outside is the first operation means. The first gauge 2, the second gauge 3, and the third gauge 4 are provided so as to correspond to the gauge 2, the second gauge 3, and the third gauge 4, respectively, so that a pair of protrusions protrude outside the housing 1. A plurality of handles for moving the corresponding gauge of the three gauges 4, that is, a first handle 5, a second handle 6, and a third handle 7 are included.

  Further, the actuating means described above biases each of the base bodies 2a, 3a, 4a so that each of the first gauge 2, the second gauge 3, and the third gauge 4 is housed in the housing 1. For example, springs 10 and 11 for biasing the base 2a, springs 12 and 13 for biasing the base 3a, and springs 14 and 15 for biasing the base 4a are provided. These springs 10, 11, 12, 13, 14, 15 are set to have the same shape and size, for example, and are fixed to the bottom of the housing 1.

  Each of the first handle 5, the second handle 6, and the third handle 7 described above is provided separately from the corresponding first gauge 2, second gauge 3, and third gauge 4. In addition, in the present embodiment, the first handle 5, the second handle 2, the second handle 5, the second handle 2 c, the projections 3 b, 3 c, and the projections 4 b, 4 c are protruded outside the housing 1. Locking means for locking the corresponding handle of the handle 6 and the third handle 7 to the housing 1 is provided.

  The first handle 5 includes a knob portion 5a, a rod-like body 5b that is connected to the knob portion 5a and extends in the vertical direction, and a stopper 5c that is connected to the rod-like body 5b and extends in the horizontal direction. Contains. Similarly, the second handle 6 includes a knob portion 6a, a rod-like body 6b that is connected to the knob portion 6a and extends in the vertical direction, and a stopper that is connected to the rod-like body 6b and extends in the horizontal direction. 6c. The third handle 7 also includes a knob portion 7a, a rod-like body 7b that is connected to the knob portion 7a and extends in the vertical direction, and a stopper 7c that is connected to the rod-like body 7b and extends in the horizontal direction. Including. A T-shape is formed by the knob portion 5a of the first handle 5 and the rod-like body 5b. Similarly, a T-shape is formed by the knob portion 6a and the rod-like body 6b of the second handle 6, and by the knob portion 7a and the rod-like body 7b of the third handle 7, respectively.

  As shown in FIG. 1 (b), on the upper surface of the housing 1, each of the rod-shaped body 5b of the first handle 5, the rod-shaped body 6b of the second handle 6, and the rod-shaped body 7b of the third handle 7 is provided. First insertion holes 1a, 1b, and 1c that allow the vertical movement and allow the rod-like bodies 5b, 6b, and 7b to rotate in the horizontal plane are formed. Further, on the lower surface of the housing 1, as shown in FIG. 1 (c), the second insertion holes 1d, 1e, the projection 3b, which allow the projections 2b, 2c to protrude to the outside of the housing 1 are provided. Second insertion holes 1d and 1f that allow the projection of 3c and second insertion holes 1d and 1g that allow the projections 4b and 4c to project are formed.

  Further, the above-described locking means for locking the first handle 5, the second handle 6, and the third handle 7 to the housing 1 includes the stopper 5 c of the first handle 5 and the side surface of the housing 1. And a locking hole 1h into which the stopper 5c is inserted and locked when the first handle 5 is rotated approximately 90 degrees in the horizontal direction. The locking means described above is formed on the stopper 6c of the second handle 6 and the side surface of the housing 1, and the stopper 6c is inserted when the second handle 6 is rotated approximately 90 degrees in the horizontal direction. And a locking hole 1i to be locked. Further, the locking means described above is formed on the stopper 7c of the third handle 7 and the side surface of the housing 1, and the stopper 7c is inserted when the third handle 7 is rotated approximately 90 degrees in the horizontal direction. And a locking hole 1j to be locked. Each of the locking holes 1h, 1i, 1j described above is communicated with a connecting hole 1k formed on the side surface of the housing 1 and extending along the longitudinal direction of the housing 1.

  As shown in FIG. 1, when the roller chain elongation detection operation is not performed, the stopper 5c of the first handle 5 and the locking hole 1h are unlocked, and the extension direction of the stopper 5c and the first direction are determined. The form of the first handle 5 is held so that the extending direction of the base 2a of the gauge 2 matches. Similarly, the second handle 6 is unlocked so that the extending direction of the stopper 6c and the extending direction of the base 3a of the second gauge 3 coincide with each other. Six forms are retained. Further, the third handle 7 is arranged such that the stopper 7c of the third handle 7 is unlocked from the locking hole 1j so that the extending direction of the stopper 7c coincides with the extending direction of the base 4a of the third gauge 4. Is maintained. Thus, the base 2a of the first gauge 2 is biased upward by the force of the springs 10 and 11, and the base 3a of the second gauge 3 is biased upward by the force of the springs 12 and 13. The base 14a of the third gauge 4 is urged upward by the force of the springs 14 and 15, and the projections 2b and 2c, the projections 3b and 3c, and the projections 4b and 4c that make a pair are respectively applied to the housing 1. Stored.

  2A and 2B are diagrams showing an example of the operation of the present embodiment. FIG. 2A is a plan view, FIG. 2B is a front view, FIG. 2C is a bottom view, FIG. 2D is a side view, and FIG. FIG. 4 is a diagram illustrating a roller chain elongation detection operation performed using the present embodiment, a diagram illustrating a state in which it is assumed that the roller chain is not elongated, and FIG. 4 is a diagram illustrating a roller chain performed using the present embodiment. It is a figure which shows the elongation detection operation | work, and is a figure which shows the state when the elongation considered to be a use limit is produced in the roller chain.

  When performing the roller chain elongation detection operation, as shown in FIG. 2, the corresponding handle of the first handle 5, the second handle 6, and the third handle 7, for example, the second handle 6 is pushed down while being horizontal. The stopper 6c is rotated about 90 degrees in the direction, and the stopper 6c is rotated in the connecting hole 1k on the side surface of the housing 1 integrally with the rotation of the rod-shaped body 6b, and the stopper 6c communicates with the connecting hole 1k. To lock. During this time, the base 2a of the second gauge 6 descends against the force of the springs 12 and 13, and along with this, a pair of protrusions 3b and 3c protrude below the housing 1 and are fixedly held.

  With the protrusions 3b and 3c protruding from the housing 1 as described above, for example, the protrusion 3b is inserted between adjacent rollers 30a on one side of the roller chain 30 to be detected for elongation as shown in FIG. At this time, when the protrusion 3c is not inserted between the adjacent rollers 30a on the other side as shown in FIG. 3 and the protrusion 3c contacts the roller 30a, the elongation of the roller chain 30 has not reached the use limit. It is determined that the roller chain 30 need not be replaced.

  As shown in FIG. 4, when the protrusion 3 c is inserted between the adjacent rollers 30 a on the other side in a state where the protrusion 3 b is inserted between the adjacent rollers 30 on one side of the roller chain 30, It is determined that the roller chain 30 needs to be replaced because the elongation of the roller chain 30 has progressed and the use limit has been reached.

  When detecting the extension of another roller chain having a roller pitch different from that of the roller chain 30, the projections 2 b and 2 c are protruded below the housing 1 by operating the first handle 5, or the second handle 7 is The protrusions 4b and 4c can be protruded below the housing 1 by the operation, and the same elongation detection work as described above can be performed.

  According to the present embodiment configured as described above, any one of the first handle 5, the second handle 6, and the third handle 7 is rotated according to the roller chain to be detected for elongation, By selectively projecting any one of the three pairs of projections 2b and 2c, projections 3b and 3c, and projections 4b and 4c to the outside of the housing 1, a plurality of roller chains having different roller pitches can be formed. It can correspond to elongation detection. When the roller chain elongation detection operation is not performed, the handle is rotated so that the three pairs of protrusions 2b, 2c, protrusions 3b, 3c, and protrusions 4b, 4c are all housed in the housing 1. The height dimension can be reduced. Thus, this embodiment can be made compact when not in use, and can improve convenience when being carried. When the housing 1 has all three pairs of protrusions 2c, protrusions 3b, 3c, and protrusions 4b, 4c stored, the three pairs of protrusions 2b, 2c, 3b, 3c, 4b, 4c respectively It is possible to prevent the external force from being applied to the projections 2b, 2c, 3b, 3c, 4b, and 4c. Thereby, this embodiment can improve durability and implement | achieve a highly reliable elongation detection apparatus.

  The above embodiment is configured to include three pairs of protrusions 2b, 2c, protrusions 3b, 3c, and protrusions 4b, 4c that can be applied to three types of roller chains with different roller pitches. In addition, it may be configured to have two pairs of protrusions so that it can protrude from the housing 1 in correspondence with two types of roller chains having different roller pitches, and it can be adapted to four or more types of roller chains having different roller pitches. Thus, it may be configured to have four or more pairs of protrusions that can protrude from the housing 1.

1 Housing (storage member)
1a 1st insertion hole 1b 1st insertion hole 1c 1st insertion hole 1d 2nd insertion hole 1e 2nd insertion hole 1f 2nd insertion hole 1g 2nd insertion hole 1h Locking hole (locking means)
1i Locking hole (locking means)
1j Locking hole (locking means)
1k connecting hole 2 first gauge 2a base 2b protrusion 2c protrusion 3 second gauge 3a base 3b protrusion 3c protrusion 4 third gauge 4a base 4b protrusion 4c protrusion 5 first handle (actuating means)
5a knob 5b rod-like body 5c stopper (locking means)
6 Second handle (actuating means)
6a knob 6b rod-like body 6c stopper (locking means)
7 Third handle (operating means)
7a knob 7b rod 7c stopper (locking means)
10 Spring (biasing member) [actuating means]
11 Spring (biasing member) [actuating means]
12 Spring (biasing member) [actuating means]
13 Spring (biasing member) [actuating means]
14 Spring (biasing member) [actuating means]
15 Spring (biasing member) [actuating means]
20 Groove 21 Groove 30 Roller Chain 30a Roller

Claims (5)

In the roller chain elongation detecting device, which is provided in relation to the pitch between the rollers provided in the roller chain, has a different pitch, and includes a plurality of pairs of protrusions for detecting the elongation of the roller chain.
A storage member capable of storing all of the plurality of pairs of protrusions; and an actuating means for operating one of the plurality of pairs of protrusions to protrude outward from the storage member. A roller chain elongation detecting device characterized by the above. In the roller chain elongation detecting device according to claim 1,
The storage member includes a housing,
The protrusion is composed of a plurality of gauge components that are housed in a movable manner in the housing.
The actuating means is provided corresponding to each of the plurality of gauges, and a plurality of handles for moving corresponding ones of the plurality of gauges so as to project the pair of protrusions to the outside of the housing. An apparatus for detecting elongation of a roller chain, comprising: In the roller chain elongation detecting device according to claim 2,
Each of the plurality of gauges has a base that is guided in the vertical direction in the housing, and the protrusion is formed integrally with the base.
The roller chain elongation detecting device, wherein the operating means includes an urging member that urges the base so that each of the gauges is housed in the casing. In the roller chain elongation detecting device according to claim 3,
Each of the handles is provided separately from the corresponding gauge,
An apparatus for detecting elongation of a roller chain, comprising: locking means for locking each of the handles to the casing in a state where any one of the pair of protrusions protrudes outside the casing. In the roller chain elongation detecting device according to claim 4,
The handle includes a knob, a rod-like body that is connected to the knob and extends in the vertical direction, and a stopper that is connected to the rod-like body.
Forming a first insertion hole on the upper surface of the housing to allow the rod-like body of the handle to move in the vertical direction and to allow the rod-like body to rotate in a horizontal plane;
Forming a second insertion hole in the lower surface of the housing to allow the protrusion to protrude outside the housing;
The locking means includes the stopper of the handle and a locking hole that is formed on a side surface of the housing and locks the stopper when the handle is rotated in a horizontal direction.
The urging means comprises a plurality of springs that are fixed in the casing in correspondence with the base of the gauge and urge the base of the gauge, respectively. .

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