JP2014189347A - Renewal method for passenger conveyor and carrier used for method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a renewal method for a passenger conveyor that is used to install a newly-installed truss in an inner space of an existing truss, which allows truss segments composing the newly-installed truss to be carried easily, and moreover causes little trouble in a process of carrying the truss segments.SOLUTION: The renewal method for a passenger conveyor performs steps of: attaching, with a newly-installed truss being divided into a plurality of truss segments 30, a plurality of carriers 4, which can be arranged on the upper surface of an existing truss 1, to each truss segment 30 in a process of sequentially installing the truss segments 30 in the inner space of the existing truss 1; and carrying each truss segment 30 while moving the plurality of carriers 4 along the upper surface of the existing truss to complete the newly-installed truss. The carriers 4 comprise a sledge member 43 slidable along the upper surface extending in the longitudinal direction of the existing truss 1.

Description

  The present invention relates to a method for renewing a passenger conveyor such as an escalator.

2. Description of the Related Art Conventionally, a renewal method has been known in which, in an escalator, a new truss is installed in the internal space of an existing truss without removing the existing truss, and the new truss is combined with the existing truss (Patent Document 1).
According to the renewal method, it is possible to shorten the renewal work period.

In such a renewal method, a renewal method is known in which a new truss is divided into a plurality of truss segments in the longitudinal direction, and these truss segments are sequentially installed in the internal space of the existing truss (patent) Reference 2).
According to the renewal method, all the truss segments are installed in the internal space of the existing truss while the internal space of the existing truss is moved along the existing truss, and these truss segments are connected to each other, thereby A new truss can be completed in the interior space.

Furthermore, in such a renewal method, in the process of moving the truss segment along the existing truss, four transport tools with wheels that can roll on the upper surface of the existing truss are attached to the front, rear, left and right of the truss segment. It has been proposed to transport truss segments by the transport tool (Patent Document 3).
According to the renewal method, a plurality of truss segments that should constitute the newly installed truss can be easily transported along the existing truss.

JP 58-152779 A JP 2005-314085 A JP 2010-70313 A

  However, in the renewal method of attaching a transporter with wheels to the truss segment that constitutes the newly installed truss, the weight of the truss segment is supported by four wheels, so the burden on each wheel increases, There is a problem that a supporting axle is bent or a bearing attached to the axle is damaged. In addition, there is a problem in that the configuration of the transporting tool including the wheels is complicated and the maintenance becomes complicated.

  If the number of transport tools is increased, the burden on each wheel can be reduced. However, as the number of transport tools increases, it takes time and labor to attach the transport tools to the truss segment. Become.

  Accordingly, an object of the present invention is to provide a renewal method for a passenger conveyor in which a newly installed truss is divided into a plurality of truss segments in the longitudinal direction and these truss segments are sequentially installed in the internal space of the existing truss. A renewal method that can easily transport truss segments along the existing truss in the inner space of the truss, and that causes less trouble in the process of transporting the truss segments, and a transport tool used for this method. It is to be.

The renewal method of the passenger conveyor according to the present invention is such that the newly installed truss to be installed in the internal space of the existing truss is divided into a plurality of truss segments in the longitudinal direction, and these truss segments are sequentially placed inside the existing truss. It will be installed in the space,
Multiple truss segments that can be placed on the truss segment to be transported on the upper surface extending in the longitudinal direction of the existing truss in the process of sequentially installing the plurality of divided truss segments in the internal space of the existing truss A plurality of transporting tools are moved along the upper surface, each truss segment is transported, and the front and rear truss segments are connected to each other to complete a new truss. ,
The carrier includes a sled member that can slide along an upper surface extending in the longitudinal direction of an existing truss.

According to the above renewal method, the transport tool to be attached to the truss segment has a sled member, and the truss segment can be transported easily by sliding the sled member along the upper surface of the existing truss during transport of the truss segment. I can do it.
However, since the sled member can be provided integrally with the base member to be connected to the truss segment, even if a large load is applied during transportation of the truss segment, there is almost no risk of breakage.

  The transport tool used in the renewal method of the passenger conveyor according to the present invention includes a base member to be connected to the truss segment and a sled member slidable along the upper surface extending in the longitudinal direction of the existing truss, and the base member is An adjustment mechanism is provided for adjusting the height position of the truss segment with respect to the existing truss while being connected to the truss segment and the sled member being disposed on the upper surface of the existing truss.

  According to the above transporting device, the truss segment can be prevented from colliding with the existing truss by operating the adjusting mechanism during transport of the truss segment to adjust the distance between the truss segment and the existing truss. The truss segment can be set at a predetermined height position with respect to the existing truss by operating the adjusting mechanism at the end of the segment conveyance.

  In a specific aspect of the transport tool, the base member has a mounting surface that can come into contact with the top surface of the truss segment, and the sled member has a sliding surface that can come into contact with the top surface of the existing truss, and the base member and the sled member The first adjustment mechanism for changing the distance between the mounting surface of the base member and the sliding surface of the sled member is interposed between the base member and the base member, and the base member is fixed to the truss segment. In the state, a second adjustment mechanism is provided for changing the distance from the mounting surface of the base member to the upper surface of the truss segment.

  According to the transporting tool, a large adjustment amount can be realized by the two adjusting mechanisms, the interval is adjusted by the first adjusting mechanism when the truss segment is transported, and the second adjusting mechanism is used when the truss segment is transported. Since the height can be adjusted, an appropriate adjustment mechanism can be configured according to the purpose of the adjustment.

  In a more specific aspect of the carrier, the sliding surface of the sled member includes a main sliding surface parallel to the upper surface of the existing truss, and a receding angle with respect to the upper surface of the existing truss from the front end and the rear end of the main sliding surface. And two auxiliary sliding surfaces extending in the front-rear direction.

  According to the carrier, even if there is a convex portion on the upper surface of the existing truss, the front auxiliary sliding surface first rides on the upper surface of the convex portion, and then the main sliding surface rides on the upper surface of the convex portion. Since the auxiliary sliding surface behind the hill rides on the upper surface of the convex portion, the convex portion can be easily passed.

  Here, according to the configuration in which the swing mechanism for swinging the sled member in the front-rear direction is interposed between the base member and the sled member, the projection passes on the upper surface of the existing truss. The swing mechanism operates in the process, and the slope of the sliding surface changes, so that it can pass through the convex portion more easily.

  Further, according to the configuration in which the spring mechanism for applying an elastic repulsion force against the swing of the sled member is interposed between the base member and the sled member, the convex portion existing on the upper surface of the existing truss When the posture of the sled member (inclination of the sliding surface) changes in the process of passing through, the posture of the sled member quickly returns due to the elastic repulsive force of the spring mechanism.

In a more specific mode of the transporting tool, the base member is detachably mounted with an inclination adjusting member for adjusting the inclination posture of the sled member in the front-rear direction when the base member is attached to the truss segment. ing.
Alternatively, an inclination adjusting member is fixed to the base member.

  According to this specific aspect, when two transport tools are attached before and after the truss segment, the postures of the two transport tools differ depending on the shape of the truss segment, and as a result, the slopes of the sliding surfaces of the two transport tools are mutually different. When different, the inclination of the sliding surfaces of the two conveying tools can be matched with each other by the provision of the inclination adjusting member.

  According to the renewal method of the passenger conveyor and the transport tool used in the method according to the present invention, the truss segment can be easily transported along the existing truss in the internal space of the existing truss, but the truss segment is transported. In this process, the transport tool is less likely to be damaged, and its maintenance is easy.

FIG. 1 is a perspective view showing a first step in the renewal method of the present invention. FIG. 2 is a perspective view showing a second step in the renewal method. FIG. 3 is a perspective view showing a third step in the renewal method. FIG. 4 is a perspective view showing a fourth step in the renewal method. FIG. 5 is a perspective view showing a fifth step in the renewal method. FIG. 6 is a perspective view showing the carrier of the present invention. FIG. 7 is a side view of the carrier. FIG. 8 is a front view of the carrier. FIG. 9 is a diagram for explaining adjustment by the transport tool. FIG. 10 is a side view showing another configuration example of the transporting tool. FIG. 11 is a front view of the configuration example. FIG. 12 is a side view showing still another configuration example of the transport tool. FIG. 13 is a front view of the configuration example. FIG. 14 is a side view showing a state in which the transport tool is attached to the front and rear of the bent truss segment. FIG. 15 is a side view of the rear transportation tool on which the inclination adjusting member is mounted. FIG. 16 is a side view of the forward transport tool to which the inclination adjusting member is attached. FIG. 17 is a series of side views showing a first process in which truss segments are sequentially conveyed along an existing truss in the renewal method of the present invention. FIG. 18 is a series of side views showing a second process in which truss segments are sequentially conveyed along existing trusses in the renewal method. FIG. 19 is a series of side views showing a third process in which truss segments are sequentially conveyed along existing trusses in the renewal method. FIG. 20 is a series of side views showing a fourth process in which truss segments are sequentially conveyed along existing trusses in the renewal method. FIG. 21 is a series of side views showing a fifth process in which truss segments are sequentially conveyed along existing trusses in the renewal method. FIG. 22 is a series of side views showing a sixth process in which truss segments are sequentially conveyed along existing trusses in the renewal method. FIG. 23 is a series of side views showing a seventh process in which truss segments are sequentially conveyed along existing trusses in the renewal method. FIG. 24 is a side view showing an existing truss. FIG. 25 is a side view showing a plurality of truss segments constituting the newly installed truss.

  Hereinafter, the embodiment in which the present invention is applied to an escalator renewal method will be described in detail with reference to the drawings. In the following description, the direction from the lower floor to the upper floor along the longitudinal direction of the truss is referred to as “front”, and the opposite direction is referred to as “rear”.

The escalator renewal method according to an embodiment of the present invention is to install a new truss in the internal space of the existing truss without removing the existing truss. First, in the first step, FIG. 1 and FIG. As shown, parts and devices (driving device, step, handrail drive mechanism, control device, etc.) other than the existing truss (1) are removed from the escalator, leaving only the existing truss (1).
The existing truss (1) is composed of an upper floor horizontal part (11), an inclined part (12) and a lower floor side horizontal part (13), and the upper floor side horizontal part (11) to the inclined part (12). And an upper surface (1a) extending to the lower horizontal portion (13).

  In addition, as shown in FIG. 25, the new truss (3) is arranged in the longitudinal direction in the upper floor side horizontal truss segment (31), the upper floor side bent truss segment (32), and a plurality of intermediate truss segments (33) ( 33), the lower floor side truss segment (34), and the lower floor side horizontal truss segment (35).

The truss segments (31) to (35) include a plurality of components and devices (drive device, drive wheel, guide rail, etc.) that can be mounted in advance among a plurality of components and devices that constitute the escalator. It is installed.
FIG. 25 shows one example of division of the new truss (3), and an appropriate division form is adopted according to the total length of the new truss (3).
In the following description, the truss segments (31) to (35) constituting the new truss (3) will be collectively referred to as a truss segment (30) as appropriate.

  Next, in the second step, as shown in FIG. 2, the gate-type lifting device (2a) is installed on the lower horizontal part (13) of the existing truss (1) and the upper floor side of the existing truss (1). A portal lifting device (2b) is installed on the horizontal part (11).

Subsequently, in the third step, as shown in FIG. 3, a chain block (20) provided in the lower-floor side gate-type lifting device (2a) and the upper-floor side gate-type lifting device (2b) is used. The truss segment (30) is pulled up along the upper surface of the existing truss (1).
Here, the truss segment (30) is provided with transport tools (4) at four locations, front, rear, left and right, respectively, and the four transport tools (4) extend over the entire length of the existing truss (1). The truss segment (30) is conveyed by being disposed on the existing upper surface and moving along the upper surface.

  As shown in FIG. 6, the carrier (4) slides along the flat base member (41) to be fastened to the upper surface of the truss segment (30) and the upper surface (1a) of the existing truss (1). It includes a possible sled member (43) and a telescopic mechanism (42) interposed between the base member (41) and the sled member (43).

As shown in FIG. 8, an attachment surface (41a) that can contact the upper surface of the truss segment (30) is formed on the back surface of the base member (41).
Further, as shown in FIGS. 7 and 8, the sled member (43) is fixed to the lower end portion of the telescopic mechanism (42) via an angle member (46).

  The sled member (43) has three sliding surfaces (43a), (43b) and (43b) shown in FIG. 7 facing the upper surface of the existing truss (1), and is arranged in front of and behind the central main sliding surface (43a). Two auxiliary sliding surfaces (43b) and (43b) are formed in the two, and both auxiliary sliding surfaces (43b) and (43b) are inclined with a certain receding angle with respect to the main sliding surface (43a).

  In the process in which the transport tool (4) moves in the flat area on the upper surface of the existing truss (1), the main sliding surface (43a) of the sled member (43) is in sliding contact with the upper surface of the existing truss (1). In the process of (4) overcoming the convex portion on the upper surface of the existing truss (1), first, the auxiliary sliding surface (43b) in front of the sled member (43) is brought into sliding contact with the convex portion of the existing truss (1). The main sliding surface (43a) comes into sliding contact with the convex portion of the existing truss (1) and then climbs over the convex portion. Finally, the rear auxiliary sliding surface (43b) is attached to the existing truss (1). The slidable contact with the convex part will be overcome.

As shown in FIGS. 7 and 8, the telescopic mechanism (42) includes an outer cylinder (421) connected to the back surface of the base member (41) and an inner cylinder (422) connected to the upper surface of the angle member (46). The outer cylinder (421) and the inner cylinder (422) are slidably fitted to each other along the cylinder axis direction.
The outer cylinder (421) has a long hole (48) that is long in the cylinder axis direction, while the inner cylinder (422) is screwed with a bolt (47), and the head of the bolt (47) is long. The inner cylinder (422) slides with respect to the outer cylinder (421) by being fitted into the hole (48), and the inner cylinder (422) is prevented from falling off.

The first adjustment bolt (44) is screwed into the base member (41), and the front end surface of the first adjustment bolt (44) is in contact with the end surface of the inner cylinder (422).
Accordingly, by screwing the first adjustment bolt (44) into the base member (41), the tip end surface of the first adjustment bolt (44) presses the end surface of the inner cylinder (422), thereby the outer cylinder ( 421) and the inner cylinder (422) move relative to each other in the separating direction, the telescopic mechanism (42) expands, and its length A increases.

  Conversely, by unscrewing the first adjustment bolt (44), the outer cylinder (421) and the inner cylinder (422) can move relative to each other in the approaching direction, and the extension mechanism (42 ) Contracts and its length A decreases.

Also, the second adjustment bolt (45) is screwed into the base member (41), and the nuts (49) and (49) are screwed onto the tip of the second adjustment bolt (45) passing through the base member (41). doing.
The second adjusting bolt (45) passes through the truss segment (30) with the base member (41) installed on the upper surface of the truss segment (30) as shown in FIG. The base member (41) can be fixed to the truss segment (30) by tightening the nuts (49) and (49).

With the base members (41) of the four transport tools (4) fastened and fixed to the front, rear, left and right of the truss segment (30), the sled members (43) of the four transport tools (4) are attached to the existing truss (1). When sliding along the upper surface, the length A of the telescopic mechanism (42) shown in FIG. 9 (a) is changed by operating the first adjusting bolt (44), so that the upper surface of the existing truss (1) ( Adjust the distance B between 1a) and the upper surface of the truss segment (30).
Accordingly, the truss segment (30) can be transported in the internal space of the existing truss (1) without causing the truss segment (30) to interfere with the existing truss (1).

  After the truss segment (30) is transported to a predetermined position along the upper surface (1a) of the existing truss (1), the fastening of the truss segment (30) to the base member (41) is loosened, and FIG. 9 (b) The truss segment (30) is moved up and down in the internal space of the existing truss (1) by operating the second adjusting bolt (45) shown in the figure to increase or decrease the screwing amount to the base member (41). ) To adjust the distance B 'between the upper surface (1a) and the upper surface of the truss segment (30). At this time, it is possible to adjust the distance B ′ between the upper surface (1a) of the existing truss (1) and the upper surface of the truss segment (30) by operating the first adjusting bolt (44).

Thereby, the truss segment (30) can be set at a predetermined height position in the internal space of the existing truss (1).
As a result, it is possible to connect the truss segment (30) with the previously installed truss segment (30).

  As described above, four transport tools (4) are attached to the truss segment (30) to be transported, and each of the truss segments is moved while moving these four transport tools (4) along the upper surface of the existing truss (1). By transporting (30) and connecting the front and rear truss segments (30) and (30) to each other, a new truss (3) is completed in the internal space of the existing truss (1) as shown in FIG.

  Finally, in the fourth step, after removing the lower floor side gate type lifting device (2a) and the upper floor side gate type lifting device (2b) from the existing truss (1) as shown in FIG. On the other hand, escalator renewal is completed by attaching necessary parts and equipment (steps, handrails, control equipment, etc.).

  FIGS. 17 to 23 show that a plurality of truss segments (30) are sequentially placed on the upper surface of the existing truss (1) using the lower-floor side gate-type lifting device (2a) and the upper-floor side gate-type lifting device (2b). It shows a series of lifting and installation operations until the new truss (3) is completed.

  That is, FIGS. 17 (a) to 18 (c) show the transportation and installation work of the upper floor horizontal truss segment (31), and FIGS. 18 (c) to 19 (c) show the upper floor bending truss. FIGS. 20 (a) to 20 (d) show the transport and installation work of the first intermediate truss segment (33), and FIGS. 21 (a) to (c). Shows the transport and installation work of the second intermediate truss segment (33), and FIGS. 22 (a) to (d) show the installation work of the lower floor side bent truss segment (34). ) To (c) show the installation work of the lower floor side horizontal truss segment (35).

  In this process, every time the truss segment (30) is pulled up, the height of the truss segment (30) is adjusted, and then the truss segment (30) is connected to the previously installed truss segment (30), If necessary, the truss segment (30) is connected to the existing truss (1).

Each time the truss segment (30) is lifted and installed, or after the truss segment (30) is completely lifted and installed, the four transport devices (4 ) Is removed.
At this time, if the telescopic mechanism (42) of the transport tool (4) is contracted, the transport tool (4) can be easily removed.

According to the renewal method of the escalator, four transport tools (4) are attached to the truss segment (30), and the sled member (43) of the transport tool (4) is slid along the upper surface of the existing truss (1). By doing so, the truss segment (30) can be moved, so that the truss segment (30) can be transported easily.
Further, in the transport tool (4), since the sled member (43) is provided integrally with the base member (41), even if a large load is applied during transport of the truss segment (30), the transport tool There is almost no risk of (4) being damaged, and maintenance is easy.

  Furthermore, with the transport tool (4) attached to the truss segment (30), the transport tool (4) can be used to transport the truss segment (30) and adjust the height of the truss segment (30) after transport. Therefore, it is not necessary to change the setup from the transfer work to the installation work, and the renewal can be completed with fewer work steps than in the past.

10 and 11 show another configuration example of the transport tool (4).
In the transport tool (4), a swing mechanism (400) is interposed between the telescopic mechanism (42) and the angle member (46). The swing mechanism (400) protrudes upward from the first shaft portion (401) projecting downward on the lower end surface of the inner cylinder (422) of the telescopic mechanism (42) and the upper surface of the angle member (46). The second shaft portion (402) provided and the pivot shaft (403) that connects the shaft portions (401) and (402) to each other. The sled member (43) is moved in the front-rear direction with respect to the base member (41). Rocks.

  According to the transport tool (4), when there is a convex portion on the upper surface of the existing truss (1), the sled member (43) swings back and forth in the process of passing through the convex portion, whereby the convex portion Can be more easily overcome.

Moreover, FIG.12 and FIG.13 has shown the further another structural example of the conveying tool (4).
In the transport tool (4), a swing mechanism (400) is interposed between the telescopic mechanism (42) and the angle member (46), and a spring (404) is provided before and after the swing mechanism (400). (404) intervenes.

  According to the transport tool (4), when the sled member (43) swings in the process of passing through the convex portion existing on the upper surface of the existing truss (1), the elastic repulsion of the front and rear springs (404) and (404). The posture of the sled member (43) is quickly returned to the original posture by the force.

  By the way, when the upper floor side bent truss segment (32) is transported as shown in FIG. 18 (c) to FIG. 19 (c), as shown in FIG. The adjustment member (431) is attached, and the second inclination adjustment member (441) is attached to the rear transfer tool (4).

  The inclination adjusting member (441) to be attached to the rear transportation tool (4) is attached to the back surface (mounting surface) of the base member (41) of the transportation tool (4) as shown in FIG. A slope (440) to be in contact with the upper surface of the floor-side bent truss segment (32) is formed.

Further, as shown in FIG. 16, the inclination adjusting member (431) to be mounted on the front conveying tool (4) has a support frame (433) on the back surface (mounting surface) of the base member (41) of the conveying tool (4). In this state, the inclined surface (430) to be in contact with the upper surface of the upper floor side bending truss segment (32) is formed.
A pair of flange members (432) and (432) to be fastened to the truss segment (30) project from the inclination adjusting member (431).

As shown in FIG. 14, the conveyance tool (4) provided with the 1st inclination adjustment member (431) and the 2nd inclination adjustment member (441) were provided before and behind the upper floor side bending truss segment (32). The sled members (43) and (43) of both transport tools (4) and (4) are in the same posture with respect to the existing truss (1) with the transport tool (4) attached, and both sled members (43) It becomes possible that the main sliding surface of (43) slides simultaneously on the upper surface of the existing truss (1).
Accordingly, the upper floor side bent truss segment (32) can be smoothly conveyed along the upper surface of the existing truss (1).

  In addition, each part structure of this invention is not restricted to the said embodiment, A various deformation | transformation is possible within the technical scope as described in a claim. For example, in the above-described embodiment, the sled member (43) having the auxiliary sliding surfaces (43b) and (43b) before and after the main sliding surface (43a) is adopted, but the present invention is not limited to this, and the existing truss (1) A sliding surface having various shapes capable of smoothly sliding on the upper surface can be employed.

  In the above embodiment, the truss segments (30) of the new truss (3) are pulled up sequentially from the bottom along the existing truss (1), but the truss segments (30) are sequentially pulled from the top. It is also possible to adopt a method of lowering.

  In the above embodiment, after the new truss (3) is completed at the factory, the new truss (3) is divided into a plurality of truss segments (30), and these truss segments (30) are renewed. It is supposed to be carried into the site, but after the truss segments (30) that should constitute the new truss (3) are manufactured separately at the factory, the factory renews without assembling these truss segments (30). It is also possible to carry it to the construction site.

  Furthermore, the present invention is not limited to an escalator, and can also be implemented in a passenger conveyor that conveys passengers in a horizontal direction such as a moving sidewalk.

(1) Existing truss
(2a) Lower gate type lifting equipment
(2b) Upper floor side gate type lifting equipment
(20) Chain block
(3) New truss
(30) Truss segment
(4) Carrier
(41) Base member
(42) Telescopic mechanism
(43) Sled member
(44) First adjustment bolt
(45) Second adjustment bolt

Claims (9)

Renewal method for passenger conveyors in which a new truss to be installed in the internal space of an existing truss is divided into multiple truss segments in the longitudinal direction, and these truss segments are sequentially installed in the internal space of the existing truss In
In the process of sequentially installing the plurality of truss segments in the internal space of the existing truss, a plurality of transports that can be arranged on the upper surface extending in the longitudinal direction of the existing truss in the truss segment to be transported Attaching a tool, transporting each truss segment while moving the plurality of transport tools along the upper surface, and connecting the front and rear truss segments to each other to complete a new truss,
The transport device includes a sled member that can slide along an upper surface extending in a longitudinal direction of an existing truss,
A renewal method for a passenger conveyor, wherein the truss segment is conveyed by sliding the sled member along the upper surface of the existing truss. Renewal method for passenger conveyors in which a new truss to be installed in the internal space of an existing truss is divided into multiple truss segments in the longitudinal direction, and these truss segments are sequentially installed in the internal space of the existing truss In the carrier used for
A carrier used in a renewal method for a passenger conveyor, comprising: a base member to be connected to each truss segment; and a sled member slidable along an upper surface extending in the longitudinal direction of the existing truss.   The base member is connected to a truss segment, and an adjustment mechanism is provided for adjusting a height position of the truss segment with respect to the existing truss in a state where the sled member is disposed on an upper surface of the existing truss. 2. The carrier according to 2.   The base member has a mounting surface that can come into contact with the upper surface of the truss segment, and the sled member has a sliding surface that can come into contact with the upper surface of an existing truss, and the base member is interposed between the base member and the sled member. A first adjusting mechanism for changing a distance between the mounting surface of the sled member and the sliding surface of the sled member, and the base member is attached to the truss segment while the base member is connected to the truss segment. The transport tool according to claim 2, wherein a second adjustment mechanism is provided for changing a distance from the surface to the upper surface of the truss segment.   The sliding surface of the sled member has two main sliding surfaces parallel to the upper surface of the existing truss, and two extending in the front-rear direction with a receding angle with respect to the upper surface of the existing truss from the front end and the rear end of the main sliding surface. The conveying tool according to any one of claims 2 to 4, further comprising an auxiliary sliding surface.   The conveying tool according to any one of claims 2 to 5, wherein a swinging mechanism for swinging the sled member in the front-rear direction is interposed between the base member and the sled member.   The carrier according to claim 6, wherein a spring mechanism is provided between the base member and the sled member for applying an elastic repulsive force to the swing of the sled member.   The inclination adjustment member for adjusting the inclination attitude | position of the front-back direction of the sled member in the state which attached the said base member to the truss segment is attached to the said base member so that attachment or detachment is possible. The carrier according to any one of the above.   The inclination adjustment member for adjusting the inclination attitude | position of the slant member in the front-back direction in the state which attached the said base member to the truss segment is being fixed to the said base member in any one of Claim 2 thru | or 7 The carrier described.

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