JP2012106816A - Rail lifting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rail lifting system which can be efficiently attached to and detached from a rail.SOLUTION: The rail lifting system 1 is provided with a first member 3 and a second member 5 which are rotatably connected to each other by the intermediary of a connecting shaft 7. The first member includes a fitting part 9 to which a traction means 53 is fitted, and pressing parts 11 abutting on front sides of the rail 51 upon traction. The fitting part and the pressing parts are positioned on a first virtual extension line 13 and a second virtual extension line 15 extending from the connecting shaft in a side view. The first virtual extension line and the second virtual extension line extend in different directions from the connecting shaft. The second member is formed so that it extends along the side of the rail and then goes around the back side of the rail when the connecting shaft is positioned on the front side of the rail.

Description

  The present invention relates to a rail lifting device.

  The elevator includes a hoistway that extends vertically and a car that is movably provided in the hoistway. The car is guided along a guide rail fixed to a wall or beam in the hoistway. When such guide rails are installed and dismantled from the hoistway, the guide rails are lifted.

  In the lifting work of the guide rail, the rail is suspended and supported by the tow rope. For this purpose, a lifting device for connecting the rail and the rope is required at the end of the tow rope. As an example of the lifting device, there is a lifting tool disclosed in Patent Document 1. This hanger consists of two separable hanger pieces. The attachment of the hanger to the guide rail is performed by placing the first hanger piece on the back surface (back surface) of the guide rail and the second hanger piece on the guide surface opposite to the back surface of the guide rail ( After setting so as to follow the surface), the two hanging pieces are connected to each other. This connection is based on the engagement between the protrusion of one hanging piece and the L-shaped through groove of the other hanging piece. In this way, the guide rail is connected to the hanger so as to be sandwiched between the two hanger pieces from the front and back surfaces.

  However, in the conventional hanging tool of the above-described aspect, every time it is connected to or removed from the guide rail, it is necessary to connect or separate the two lifting tool pieces, which is not an efficient work. . In addition, since the suspension piece is located on both the front and back surfaces of the rail, the operator must work from the surface on one side to the suspension piece on the other side. It contributed to the reduction in efficiency.

JP 2001-48440 A

  The present invention has been made in view of the above, and an object thereof is to provide a rail lifting device that can be efficiently attached to and detached from a rail.

  In order to achieve the above-described object, the rail lifting device of the present invention includes a first piece and a second piece that are rotatably connected to each other via a connecting shaft, and the first piece includes a traction means. An attachment portion to be attached and a pressing portion that contacts the surface side of the rail when towed. The attachment portion and the holding portion are respectively in a side view, on a first virtual extension line extending from the connecting shaft, and on a second virtual extension. The first imaginary extension line and the second imaginary extension line extend in different directions from the connecting shaft, and the second piece is located when the connecting shaft is located on the surface side of the rail. The rail is formed so as to extend on the side of the rail and wrap around the back side of the rail.

  According to the rail lifting device of the present invention, it is possible to efficiently attach and detach the rail.

It is a top view of the rail lifting apparatus which concerns on embodiment of this invention. FIG. 2 is a side view of the rail lifting device as viewed from an arrow II in FIG. 1, and shows a state in which a first piece and a second piece are relatively open. FIG. 2 is a side view similar to FIG. 1, with the first piece and the second piece relatively closed. It is a side view of the 1st piece. It is the figure which saw the 1st piece from the arrow V of FIG. It is the figure which looked at the 1st piece from the arrow VI of FIG. It is a figure which shows the plane of a 2nd piece. It is the figure which looked at the 2nd piece from the arrow VIII of FIG. It is the figure which looked at the 2nd piece from the arrow IX of FIG. It is a side view which shows the construction state of a rail lifting apparatus. It is a figure which shows the construction state of FIG. 10 planarly.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a rail lifting device according to the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

  FIG. 1 is a plan view of a rail lifting device according to the present embodiment, and FIGS. 2 and 3 are side views of the rail lifting device as viewed from the arrow II in FIG. The rail lifting device 1 includes a first piece 3 and a second piece 5. The first piece 3 and the second piece 5 are connected to each other via a connecting shaft 7 so as to be rotatable. Therefore, as well shown in FIGS. 2 and 3, the first piece 3 and the second piece 5 can swing with respect to the other when viewed from one side around the connecting shaft 7, that is, both The angle formed can be changed. FIG. 2 shows a state where the first piece 3 and the second piece 5 are relatively open, and FIG. 3 shows a state where the first piece 3 and the second piece 5 are relatively closed.

  Based on FIGS. 4-6, the detail of a 1st piece is demonstrated. FIG. 4 shows the side of the first piece, and FIGS. 5 and 6 are views of the first piece as seen from the arrows V and VI in FIG. 4, respectively. The first piece 3 includes an attachment portion 9 to which traction means such as a chain, a rope, and a wire are attached, and a pressing portion 11 that comes into contact with the surface side of the rail when towing.

  The attachment portion 9 and the holding portion 11 are respectively located on the first virtual extension line 13 and the second virtual extension line 15 extending from the connecting shaft 7 in a side view, and these first virtual extension line 13 and second virtual extension line. 15 extends from the connecting shaft 7 in different directions. As an example, in the present embodiment, the angle formed by the first virtual extension line 13 and the second virtual extension line 15 around the connecting shaft 7 is set to be an obtuse angle in a side view.

  Although it is an example, in this Embodiment, the 1st piece 3 is comprised by the two plate-shaped members 17a and 17b. The plate-like members 17a and 17b are arranged apart from each other in the left-right direction (in this example, the direction in which the connecting shaft extends). A receiving space 19 described later is formed between the plate-like members 17a and 17b. The plate-like members 17a and 17b are connected by the cylindrical portion 21 and the shaft-like portion 23 so as not to be separated.

  The cylindrical portion 21 is disposed along the connecting shaft 7. The inner hole of the cylindrical portion 21 penetrates through the plate-like members 17a and 17b, and is formed as a through-hole 25 having one end opened on the outer surface of the plate-like member 17a and the other end opened on the outer surface of the plate-like member 17b. Is formed. The shaft-like portion 23 is located on the first virtual extension line 13, that is, functions as the mounting portion 9 described above.

  The first piece 3 has a first arm portion 27 and a second arm portion 29 extending along the first virtual extension line 13 and the second virtual extension line 15, that is, the plate-like members 17 a and 17, respectively. Has a first arm portion 27 and a second arm portion 29. The end portions of the second arm portions 29 of the plate-like members 17a and 17 function as the pressing portion 11 described above. The second arm portion 29 of each of the plate-like members 17a, 17 is configured so that the length in the direction along the second virtual extension line 15 becomes shorter toward the side closer to the rail when set as will be described later. Thus, the end portions of the second arm portions 29 of the plate-like members 17a and 17 functioning as the pressing portion 11 have a curved shape.

  Although the 1st piece 3 is an example as an aspect provided with the above structures, in this Embodiment, it is comprised by the side view and "F" shape.

  Next, based on FIGS. 7-9, the detail of a 2nd piece is demonstrated. FIG. 7 shows the plane of the second piece, and FIGS. 8 and 9 are views of the second piece as seen from the arrows VIII and IX in FIG. 7, respectively. As will be described later, the second piece 5 is formed so as to extend sideways of the rail when the connecting shaft 7 is located on the front surface side of the rail, and wrap around the rear surface side of the rail. In the present embodiment, the connecting shaft 7 is further included.

  The wrap-around portion 33 extends in a direction intersecting with the connecting shaft 7 (for example, the front-rear direction), and has a function of wrapping the rail back surface arrangement portion 31 toward the back surface side of the rail when towing. Moreover, the rail back surface arrangement | positioning part 31 is a part which wraps around to the back surface side of a rail at the time of towing, and is cantilevered from the edge part of the wrap-around part 33 in the left-right direction (paper surface up-down direction of FIG. 7) in this Embodiment. It is a rod-shaped part extended by. That is, the front end of the wrapping portion 33 is a free end. Based on such a configuration, the second piece 5 has a rail entry / exit opening portion 35 formed so that one of the left and right side portions thereof is opened. In this embodiment, the rail entry / exit opening portion 35 is formed so as to be surrounded by the rail back surface arrangement portion 31, the wrap-around portion 33, and the connecting shaft 7 that are generally arranged in a “U” shape. Moreover, the upper surface of the rail back surface arrangement | positioning part 31 functions as the support base surface 37, and the support base surface 37 is orient | assigned upwards so that it may engage with the bottom face of the eyeplate which connects between rails so that it may mention later at the time of towing. .

  The connecting shaft 7 extends from the end portion of the wraparound portion 33 of the second piece 5 opposite to the end portion of the rail back surface arrangement portion 31 extending in almost the same direction as the rail back surface arrangement portion 31 extends. The connecting shaft 7 has a supporting smooth surface shaft portion 39 and a thread groove shaft portion 41. One end of the supporting smooth surface shaft portion 39 is connected to the wrapping portion 33, and the thread groove shaft portion 41 extends from the other end of the supporting smooth surface shaft portion 39. Looking at the entire connecting shaft 7, the connecting shaft 7 is supported in a cantilever manner from the wraparound portion 33.

  Next, returning to FIGS. 1 to 3, a connection mode of the first piece 3 and the second piece 5 will be described. The first piece 3 is combined with the second piece 5 by inserting the connecting shaft 7 through the through hole 25. The thread groove shaft portion 41 of the connecting shaft 7 inserted through the through hole 25 is exposed, and a nut 43 is screwed into the thread groove. Washers 45 are disposed between the second piece 5 and the first piece 3 and between the first piece 3 and the nut 43, respectively. In this way, the two pieces are assembled in a state in which the first piece 3 is prevented from coming off (separated) from the second piece 5. Further, the whole or most of the through hole 25 is located on the support smooth surface shaft portion 39 of the connecting shaft 7, and the diameter of the through hole 25 is appropriately larger than the outer diameter of the support smooth surface shaft portion 39. The first piece 3 can smoothly rotate with respect to the second piece 5. Accordingly, as described above, the angle formed by the first piece 3 and the second piece 5 can be changed.

  Next, the operation of the rail lifting device according to the present embodiment configured as described above will be described. FIG. 10 is a side view showing a construction state of the rail lifting device, and FIG. 11 is a diagram showing the construction state in plan. In FIG. 11, when the rail lifting device overlaps with the traction means above the device, the device becomes difficult to recognize. To avoid this, the extending direction of the traction means is shifted.

  First, the rail lifting device 1 is set on the rail 51 with the first piece 3 and the second piece 5 in the rail lifting device 1 being opened to some extent. Specifically, the rail lifting device 1 is applied to the rail 51 by approaching the rail 51 from the side of the rail 51 from the side of the second piece 5 having the rail entry / exit opening 35. Thereby, the connecting shaft 7 of the rail lifting device 1 is positioned on the front side of the rail 51, and the rail back surface arrangement portion 31 of the rail lifting device 1 is positioned on the back side of the rail 51. On the other hand, the traction means 53 is connected to the attachment portion 9 of the first piece 3 of the rail lifting device 1 via some appropriate intermediate part (for example, hook, rope, etc.) or directly.

  When the traction means 53 attempts to lift the rail 51 via the rail lifting device 1, the first piece 3 is in a relative relationship with the second piece due to the lifting force acting on the attachment portion 9. When the lifting is further advanced, finally, the pressing portion 11 is strongly pressed against the surface 57 of the leg portion 55 of the rail 51, and the rail back surface arrangement portion 31 is fixed to the leg portion 55 of the rail 51. It is strongly pressed against the back surface 59. As a result, the rail 51 is sandwiched from the front and back (front and back) by the rail lifting device 1 and is firmly fixed to the rail lifting device 1. At this time, the protrusion 61 of the rail 51 is accommodated in the receiving space 19 of the first piece 3, that is, from the left and right by the second arm portion 29 (plate-like members 17 a and 17) of the first piece 3. Surrounded. Therefore, the horizontal displacement of the rail 51 during towing is prevented. Moreover, the rail 51 is normally connected with the upper and lower rails (illustration omitted) by the eyeplate 63. Accordingly, the rail 51 is supported by the rail lifting device while the bottom surface of the eye plate 63 is in contact with the support base surface 37 in the rail back surface arrangement portion 31 of the second piece 5 of the rail lifting device 1. It is lifted by 1.

  On the other hand, when the rail lifting device 1 is removed from the rail 51, it can be simply implemented by removing the traction force. For example, in a state where the lower end of the rail 51 is in contact with the floor surface and is not floating in the air, or in a state where the rail 51 is fixed in place and the weight is already borne by the fixing destination, the rail lifting device 1 is If the traction force acting is reduced, the rotational force of the first piece 3, that is, the pressing force of the pressing portion 11 is removed, and the rail lifting device 1 can slide downward by its own weight. After that, the rail lifting device 1 can be completely separated from the rail 51 by moving the rail lifting device 1 to the side in the direction opposite to the direction set on the rail 51 while sufficiently opening the first piece 3.

  Note that the above-described mounting and removal of the rail lifting device 1 with respect to the rail 51 can be selected from either the left or right side of the rail 51. That is, the first piece 3 and the second piece 5 can be separated by removing the nut 43, and the connecting shaft 7 of the second piece 5 can be separated from the left side or the right side of the first piece 3. 3 can be inserted. That is, the 2nd piece 5 can be connected with the 1st piece 3 also in the aspect which orient | assigned the rail entrance / exit part 35 to either right or left.

  As described above, according to the rail lifting device of the present embodiment, the following excellent effects are obtained. When the mounting portion of the first piece moves in an arc shape around the connecting shaft, the holding portion also moves in an arc shape around the connecting shaft. The part is pressed against the rail, and the rail is sandwiched from the front and back by the pressing part of the first piece and the second piece. Further, when the rail lifting device is removed from the rail, the pressing is released only by releasing the traction force. In addition, since the pressing force can be applied and released in the state of mutual rotation of the first piece and the second piece in this way, the first piece and the second piece need not be separated from each other through setting / releasing to the rail. Absent. As described above, according to the rail lifting device of the present embodiment, it is possible to efficiently attach and detach the rail. In addition, since the first piece and the second piece do not have to be separated through the setting process and the releasing process to the rail, the possibility that a part of the rail lifting device falls during the work is almost zero. Can do. Furthermore, since the rail lifting device can be naturally disconnected from the rail, there is also an advantage that an operator does not have to remove it at a high place.

  Moreover, in this Embodiment, since the protrusion part of a rail is surrounded by the 1st piece from right and left, it can prevent that a rail shift | deviates large in the left-right direction at the time of towing. In this embodiment, in order to ensure the ease of approach to the rail and the flexibility to selectively approach from the left or right side, a rail entry / exit opening portion opened to the side is provided. It is particularly beneficial to be able to suppress lateral shift.

  Further, in this embodiment, since the contact between the bottom surface of the eye plate and the support base surface in the rail back surface arrangement portion of the second piece of the rail lifting device is obtained, a support mode for supporting the weight of the rail from below is included. , Can maintain the hanging state of the rail more firmly. Further, for example, when the rail lifting device is set at the center of the rail and the suspension proceeds and a traction force acts on the rail lifting device, the rail lifting device slides naturally on the rail and engages with the eye plate. Settle in place. Therefore, even if the work is started by setting the rail lifting device on the surface of the flat rail, it is possible to finally obtain a state in which the rail is firmly supported by the rail lifting device.

  In this embodiment, since the rail lifting / lowering part is provided in the rail lifting device, the operator can set the rail lifting device on the rail from the side of the rail, and the operator can set either side of the rail. Therefore, the first piece and the second piece can be uniformly arranged on both the front and back sides of the rail, and the operation is very easy.

  Furthermore, in the present embodiment, the second piece is detachably connected to the first piece, and can be connected to the first piece in a mode in which the rail access portion is directed to the left or right. The installation and release from the left side of the rail and the installation and release from the right side of the rail can be freely selected according to the relationship with the dominant arm and the relationship with the obstacle in the work space. The property is very good.

  Although the contents of the present invention have been specifically described with reference to the preferred embodiments, various modifications can be made by those skilled in the art based on the basic technical idea and teachings of the present invention. It is self-explanatory.

  For example, although the connecting shaft is provided on the second piece side in the above embodiment, the present invention is not limited to this, and may be provided on the first piece. In addition, the connecting shaft is provided integrally as part of the first piece and the second piece, but the present invention is not limited to this, and is independent of the first piece and the second piece. It is also possible to prepare it as a part.

  DESCRIPTION OF SYMBOLS 1 Rail lifting apparatus, 3 1st piece, 5 2nd piece, 7 Connecting shaft, 9 Attachment part, 11 Holding part, 13 1st virtual extension line, 15 2nd virtual extension line, 17a, 17 Plate-shaped member, 19 acceptance Space, 27 First arm part, 29 Second arm part, 31 Rail rear surface arrangement part, 33 Wrap-in part, 35 Rail in / out opening part, 37 Support base surface, 51 Rail, 53 Pulling means, 61 Projection part, 63 Eye plate .

Claims (5)

A first piece and a second piece connected to each other via a connecting shaft so as to be rotatable,
The first piece includes an attachment portion to which the traction means is attached, and a pressing portion that comes into contact with the surface side of the rail when towing,
The attachment portion and the holding portion are respectively on a first virtual extension line and a second virtual extension line extending from the connection shaft in a side view, and the first virtual extension line and the second virtual extension line are separated from the connection shaft. Extending in different directions,
The second piece is a rail hoisting device that is formed so as to extend to the side of the rail and wrap around the back side of the rail when the connecting shaft is located on the surface side of the rail. The first piece has a first arm portion and a second arm portion extending along the first virtual extension line and the second virtual extension line,
The attachment portion and the pressing portion are located at the ends of the first arm portion and the second arm portion, respectively.
The second arm portion has a receiving space in which a protrusion on the surface side of the rail is accommodated during towing,
The protruding portion of the rail is surrounded from the left and right by the second arm portion in the receiving space.
The rail lifting device according to claim 1.   The portion of the second piece that wraps around the back side of the rail has a support base surface that is directed upward so as to engage with the bottom surface of the eyeplate that connects the rails during towing. 2 rail lifting device. The second piece has a rail access opening formed so that one of the left and right sides is opened,
The rail lifting according to any one of claims 1 to 3, wherein the second piece is moved closer to or away from the side of the rail from a side of the rail having the rail access portion. apparatus. The second piece is detachably connected to the first piece,
The rail lifting device according to claim 4, wherein the second piece can be connected to the first piece in a mode in which the rail entrance / exit opening part is directed to the left or right.

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