JP2019137344A - Carrying device for stair - Google Patents

Abstract

To provide a carrying device for stairs capable of easily installing and disassembling a rail on the stairs and carrying a heavy object by a conveyer traveling on the rail, which is temporarily installed on the stairs.SOLUTION: A carrying device 100 for stairs includes installation bases 106 placed at a plurality of heights on stairs 102, a rail 108 supported by the installation bases, and a conveyor 110 traveling on the rail. The installation bases are supported by clamping and fixing the rail.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a stair transport device that transports heavy objects along a staircase.

  In various facilities, when transporting heavy items along the stairs of the facility, a rail is installed on the stairs, a transport cart is movably mounted on the rail, and a transport cart loaded with heavy items is moved along the rail. It is possible to make it.

  In Patent Document 1, a heavy object transporter including an upper pedestal disposed at a corner of the top floor of a staircase, a guide device disposed on an inclined surface of the stairs, a transport carriage and a rope (chain). An apparatus is described.

  The upper cradle is disposed on the horizontal floor of the upper floor and has a fixing means for fixing one end of the cord-like body. The guide device has a guide rail coupled to the upper cradle. The guide rail is supported by a support device installed on the stairs. The transport carriage is movable along the guide rail, and a plurality of wheels that roll on the guide rail, a guide roller on which the rope-like body is hung, and an electric chain block that winds the other end of the rope-like body, Have

  In this heavy-duty conveying device, by operating the electric chain block of the conveying cart and winding up the cord-like body, the conveying cart is moved upward from below the guide rail, and the conveying cart is moved to the horizontal floor of the upper floor. You can get on. For this reason, in patent document 1, it is supposed that the conveyance of the heavy article on a stair can be performed easily.

JP-A-8-73199

  By the way, when the work of transporting heavy objects is temporary, it is preferable to temporarily install rails on the stairs and dismantle the rails after the transportation work. Here, when the rail is installed, if the rail is fixed to the stairs with anchor bolts or the like, the construction of the anchor bolt itself takes time and manpower, and further damages the stairs.

  In Patent Document 1, the guide rail is supported by a support device installed on the stairs. The support device includes a support portion installed on the stairs and a receiving portion that is rotatably connected to the support portion. Since the support portion of the support device is not fixed to the stairs with anchor bolts or the like, the stairs are not damaged when the guide rail is installed on the stairs.

  However, a plurality of screw holes are formed in the receiving portion of the support device. A through hole is formed in the guide rail. And the support device has connected the guide rail by screwing a countersunk screw in the screw hole of a receiving part via the through-hole of a guide rail.

  For this reason, in patent document 1, when installing a guide rail in a staircase or disassembling the installed guide rail, a tool is needed and there exists a problem that time and manpower are required.

  In view of such problems, the present invention can easily install and dismantle rails on stairs, temporarily install rails on stairs, and use heavy equipment that travels on rails. The purpose is to provide a transport device for stairs that can transport the stairs.

  In order to solve the above-described problems, a typical configuration of a stair transport device according to the present invention includes an installation base placed at a plurality of heights on a staircase, a rail supported by the installation base, and traveling on the rail. The installation base supports the rail by clamping.

  In the above configuration, the installation base is only placed on the stairs and does not need to be fixed on the stairs with anchor bolts or the like. Since the installation base is clamp-fixed, it can be fixed at any position of the rail, so that it can be installed on any stairs and supported by the rail regardless of the length of the tread surface. Moreover, since the installation base supports the rail with clamp fixing (C-type clamp), it is tool-less. The clamp fixing is not limited to the C-type clamp, but may be a one-touch clamp or a fixing by a hand turning handle.

  Therefore, the rail can be easily installed on the stairs, and the rail can be quickly disassembled. Therefore, according to the said structure, a rail can be temporarily installed in a staircase and a heavy article can be conveyed with the conveying machine which travels (self-propelled) on a rail (for example, a transformer can be conveyed to an underground machine room). .

  The installation base includes an installation part having an installation surface in contact with the stairs, a clamp part that supports the rail by clamping, and a connecting shaft that rotatably connects the installation part and the clamp part. The clamp portion has a width in the rotation direction, and the width may have a length such that the center of gravity of the clamp portion is located within the installation surface when the clamp portion is inclined 45 degrees.

  Thus, since the installation part is wide, the installation part can be stably placed on the stairs without being fixed to the stairs with anchor bolts or the like. Moreover, since the clamp part is rotatable with respect to the installation part, it can be installed on a staircase having an arbitrary angle.

  Said rail is a split type divided | segmented into several parts, and it is good to connect by inserting each parts.

  Thus, since the rail is a split type, the weight of each part can be restrained and can be carried manually. In addition, since the rails are connected by inserting each part in a split type, installation and disassembly can be performed easily, can be installed on a staircase of any length, and can be reused. Therefore, such a rail is preferable as what is temporarily installed in a staircase.

  The above-mentioned rails are a starting point rail arranged at the lower end of the stairs, a connecting rail connected to the starting point rail and used in plural, and a plurality of different lengths connected to the connecting rail and arranged at the upper end of the stairs. And an end-point rail.

  Thereby, the rail can be assembled by connecting the start point rail, the connection rail, and the end point rail of different lengths. For this reason, the length of the whole rail can be adjusted with the number of the connection rails used and the kind of end point rail used. Therefore, since the rail can be installed on a staircase having an arbitrary length and can be reused, it is preferable that the rail is temporarily installed on the staircase.

  The rail may further include an insertion rail coupled to the upper end of the end point rail, and the upper end of the insertion rail may extend above the upper end of the staircase.

  Thereby, when attaching a transporter to a rail, an attachment operation | work can be easily performed on a floor floor surface by connecting an insertion rail to the upper end of an end point rail. Then, after the installation work, when the insertion rail is removed from the end point rail, the upper end of the end point rail is positioned near the upper end of the stairs. For this reason, by making the transporter attached to the rail substantially the same as the height of the upper end of the stairs, it is possible to easily load a heavy object placed on the upper end of the stairs (such as a landing) onto the transporter.

  The transporter includes a pinion that meshes with the rack of the rail, and a roller that contacts a surface of the rail that faces the rack, and the upper end of the insertion rail is cut horizontally, and the pinion of the transporter And inserted between the roller.

  Thus, since the upper end of the insertion rail is cut horizontally, it is easy to insert the upper end of the insertion rail between the pinion and the roller of the transporter when the transporter is attached to the rail. Therefore, the transporter can be easily attached to the rail.

  The rail rack may be provided on the upper side of the rail. Thereby, the pinion of the transporter that meshes with the rack of the rail is positioned on the upper side of the rail. Therefore, according to the above configuration, since the pinion of the transporter is not positioned below the rail, the rail can be brought close to the stairs, and the center of gravity of the entire apparatus is lowered and stabilized.

  According to the present invention, the rail can be easily installed and dismantled on the staircase, and the rail can be temporarily installed on the staircase, and the heavy equipment can be transported by the transporter traveling on the rail. A transport device can be provided.

It is a figure which shows the conveyance apparatus for stairs in embodiment of this invention. It is a figure explaining a conveying machine. It is a figure which shows a connection rail typically among rails. It is a figure explaining an installation base. It is a figure which shows the procedure which connects connection rails. It is a figure which shows each part of a rail. It is a figure which shows the procedure which installs a rail in stairs. It is a figure which shows the state which installed the starting point rail and the connection rail in the stairs. It is a figure which shows the procedure which attaches a conveyance machine to a rail. It is a figure which shows the conveying apparatus for stairs in a modification.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

  FIG. 1 is a diagram illustrating a stair transport device 100 according to an embodiment of the present invention. The stair transport device 100 is a device that transports heavy objects (here, the transformer 104) along the staircases 102 of various facilities. The stair transport device 100 includes an installation base 106 placed at a plurality of heights on the staircase 102, a rail 108 supported by the installation base 106, and a transporter 110 that travels on the rail 108.

  The rail 108 is a division type that is divided into a plurality of parts, and is connected by inserting each part. Since the rail 108 is a split type, the weight of each part can be suppressed and can be carried manually. The plurality of parts include a start point rail 112, a connection rail 114, and an end point rail 116.

  The starting point rail 112 is disposed at the lower end 118 of the stairs 102. A plurality (two in this case) of connection rails 114 are used according to the length of the stairs 102. The first connection rail 114 is connected to the start point rail 112 and the second connection rail 114. Further, the second connection rail 114 is connected to the end point rail 116.

  The end point rail 116 is connected to the second connection rail 114 so as to be arranged near the upper end 120 of the staircase 102. Note that a plurality (for example, three) of end point rails 116 having different lengths are prepared (see FIG. 6), and one of them is used depending on the length of the stairs 102. Further, racks 122 are provided above the start point rail 112, the connection rail 114, and the end point rail 116, which are parts of the rail 108, respectively.

  FIG. 2 is a diagram illustrating the transporter 110. The transporter 110 is a device that is self-propelled on the rail 108, and includes a drive unit 124, a switchboard 126 and a cargo bed frame 128 attached to the drive unit 124. Electric power necessary to drive the transporter 110 is supplied to the drive unit 124 via a switchboard 126 connected to a power supply (not shown).

  The drive unit 124 includes a pinion 130, upper rollers 132 and 134, and rollers (lower rollers 136 and 138). The pinion 130 meshes with a rack 122 provided on the upper side of the rail 108. The upper rollers 132 and 134 are arranged in contact with the rack 122. The lower rollers 136 and 138 are in contact with the surface of the rail 108 on the side facing the rack 122. That is, the rail 108 is sandwiched between the pinion 130 and the lower rollers 136 and 138 (see FIG. 9).

  The loading frame 128 is rotatably connected to the connecting portion 140 of the driving unit 124 and is further connected to the rod 142. The rod 142 is attached to the drive unit 124 and can be adjusted in length. The loading frame 128 is kept horizontal regardless of the angle of the stairs by adjusting the length of the rod 142. The cargo bed frame 128 has legs 144. As shown in FIG. 1, the length of the leg 144 depends on the inclination of the staircase so that the transporter 110 travels along the rail 108 to the vicinity of the lower end 118 of the staircase 102 so as to contact the lower end 118 of the staircase 102. To set.

  The transformer 104 shown in FIG. 1 has a large weight (for example, about 500 kg) and is transported by the stair transport device 100 to an underground machine room or the like. Specifically, the operator first loads the transformer 104 placed on the caster carriage 146 from the upper end 120 of the stairs 102 onto the loading frame 128 of the transporter 110 (described later).

  Next, the operator operates the remote controller or the like to drive the drive unit 124 of the transporter 110, thereby causing the transporter 110 loaded with the transformer 104 to travel downward along the rail 108. Then, when the leg portion 144 of the loading frame 128 comes into contact with the lower end 118 of the stairs 102 as shown in the drawing, the worker stops the traveling of the transporter 110.

  On a floor surface 148 such as a machine room, a lift carriage 150 and a tilting stage 152 are placed. The lift cart 150 has a load platform 153 that can be raised and lowered. The lift carriage 150 is arranged such that the loading platform 153 is adjacent to the loading platform frame 128 of the transporter 110. Further, the height of the loading platform 153 is adjusted to be the same as the height of the loading platform frame 128. The tilt table 152 is disposed adjacent to the lift carriage 150.

  Subsequently, the operator loads the transformer 104 placed on the caster carriage 146 from the loading platform frame 128 of the transporter 110 to the loading platform 153 of the lift carriage 150. When the height of the loading platform 153 of the lift carriage 150 is lowered, the transformer 104 is placed on the caster carriage 146 and passes from the loading platform 153 through the inclined platform 152 onto the floor floor 148 such as a machine room. Placed. Thus, by using the stair transport device 100, the transformer 104 is transported from the upper end 120 of the staircase 102 to the floor floor surface 148 along the staircase 102.

  FIG. 3 is a diagram representatively showing the connection rail 114 of the rails 108. FIGS. 3A and 3B are a three-side view and a perspective view, respectively, for explaining the connection rail 114.

  The connection rail 114 has a pair of lower rails 154 and 156 and a pair of upper rails 158 and 160. The lower rails 154 and 156 are connected to each other by connecting members 162 and 164 so as to be separated from each other and parallel to each other. The lower rails 154 and 156 are portions that are clamped and supported by the installation base 106 (see FIG. 4C).

  One upper rail 158 is fixed to the lower rail 154 via fixing members 166, 168 and 170. The other upper rail 160 is fixed to the lower rail 156 via fixing members 172, 174 and 176. In this way, the upper rails 158 and 160 are disposed so as to be spaced apart from the inner side and the upper side of the lower rails 154 and 156 as illustrated.

  As shown in FIG. 3B, the lower rails 154 and 156 have upper ends 178 and 180 having a male shape and lower ends 182 and 184 having a female shape. Upper ends 186 and 188 of the upper rails 158 and 160 have a male shape, and holes 190 and 192 are further formed. Lower ends 194 and 196 of the upper rails 158 and 160 have a female shape, and holes 198 and 199 are further formed.

  FIG. 4 is a diagram illustrating the installation base 106. As shown in FIG. 4A, the installation base 106 includes an installation part 200, a rotation part 202, a pair of connecting shafts 204, and a pair of clamp parts 206. The installation unit 200 has an installation surface 208 that contacts the stairs 102. As shown in FIG. 4B, the rotating unit 202 is rotatably connected to the installation unit 200 by a pair of connecting shafts 204.

  The pair of clamp parts 206 are fixed to the rotating part 202 and are rotatable with respect to the installation part 200 together with the rotating part 202. FIG. 4B shows a state in which the pair of clamp portions 206 is inclined 45 degrees with respect to the installation portion 200.

  As shown in FIG. 4B, the installation unit 200 has a width in the rotation direction of the rotation unit 202 and the clamp unit 206. The width L of the installation part 200 is such that the center of gravity of the rotating part 202 to which the pair of clamp parts 206 are fixed is located in the installation surface 208 when the pair of clamp parts 206 is inclined 45 degrees. Is set to Thus, in the installation base 106, since the installation part 200 is wide, the installation part 200 can be stably placed on the stairs 102 without being fixed to the stairs 102 with anchor bolts or the like.

  As shown in FIG. 4 (c), the pair of clamp portions 206 includes a connection lever 210, which can be clamped (C-type clamp) without using a tool by being gripped and operated by an operator. Become. Here, a case where a connection rail 144 (see FIG. 3) is supported as a part of the rail 108 by a pair of clamp portions 206 by clamping is illustrated. In this case, the connection rail 144 is brought close to the pair of clamp portions 206, and the lower rails 154 and 156 are placed on the pair of clamp portions 206. Then, by operating the connecting lever 210, the lower rails 154 and 156 can be clamped and fixed by the pair of clamp portions 206.

  Thus, since the installation base 106 is clamp-fixed, it can be fixed at any position on the rail 108. For this reason, the installation base 106 can be installed on an arbitrary staircase 102 to support the rail 108 regardless of the length of the tread surface of the staircase 102. The clamp fixing is not limited to this as long as each part of the rail 108 can be fixed without using a tool, and may be fixed with a one-touch clamp or a hand turning handle. Further, since the pair of clamp parts 206 are rotatable with respect to the installation part 200, the installation base 106 can be installed on the stairs 102 having an arbitrary angle. Further, in the present embodiment, the clamp unit 206 is illustrated as being positioned at the end of the rotating unit 202, but it may be disposed at the center of the rotating unit 202.

  FIG. 5 is a diagram illustrating a procedure for connecting the connection rails 114 to each other. Here, the case where the 1st connection rail 114 used by the rail 108 shown in FIG. 1 and the 2nd connection rail 114 are connected is shown.

  First, as shown in FIG. 5A, the male-shaped upper ends 178, 180, 186, and 188 of the first connection rail 114 are replaced with the female-shaped lower ends 182, 184, 194, and 196 of the second connection rail 114, respectively. Plug in. At this time, the holes 190 and 192 formed at the upper ends 186 and 188 of the first connection rail 114 overlap with the holes 198 and 199 formed at the lower ends 194 and 196 of the second connection rail 114. Adjust the position.

  Next, a connection pin 212 is inserted into the holes 190 and 198 so as to pass through the stacked holes 190 and 198, and further connected to the holes 192 and 199 so as to pass through the stacked holes 192 and 199. The pin 214 is inserted. In this way, the first and second connection rails 114 are connected to each other without using a tool, and the rack 122 is continuous as shown in FIG. 5B.

  FIG. 6 is a view showing a side surface of each part of the rail 108. Among these parts, the basic configuration of the starting point rail 112 and the plurality of (in this case, three) end point rails 116 of different lengths is substantially the same as the basic configuration of the connection rail 114 shown in FIG.

  However, the lower end 216 of the starting point rail 112 is bent corresponding to the inclination angle (for example, 45 degrees) of the stairs 102. In this way, when the starting point rail 112 is disposed at the lower end 118 of the staircase 102, the lower end 216 of the starting point rail 112 is substantially parallel to the lower end 118 of the staircase 102, so that the disposition becomes easy. The upper ends 218 and 220 of the starting point rail 112 are male. For this reason, the starting point rail 112 can be connected to the connecting rail 114 by inserting the upper ends 218 and 220 into the female lower ends 182 and 194 of the connecting rail 114.

  The end point rail 116 has female-shaped lower ends 222 and 224 and a female-shaped upper end 226. The end point rail 116 can be connected to the connection rail 114 by inserting the female lower ends 222 and 224 into the male upper ends 178 and 186 of the connection rail 114.

  The rail 108 further includes an insertion rail 228. The insertion rail 228 is temporarily connected to the end point rail 116 when the transporter 110 is attached to the rail 108 (see FIG. 9A). The insertion rail 228 has a male lower end 230, a horizontally cut upper end 232, and a leg 234 attached to the upper end 232.

  The insertion rail 228 can be connected to the end point rail 116 by inserting the male lower end 230 into the female upper end 226 of the end point rail 116. The insertion rail 228 is supported by the leg 234 and is stably placed on the upper end 120 of the staircase 102 while being connected to the end point rail 116 (see FIG. 9A).

  FIG. 7 is a diagram showing a procedure for installing the rail 108 on the stairs 102. FIG. 8 is a view showing a state where the start point rail 112 and the connection rail 114 are installed on the stairs 102.

  First, the operator places the installation base 106 at a plurality of heights on the stairs 102 as shown in FIG. The installation base 106 is only placed on the staircase 102 and does not need to be fixed on the staircase 102 with an anchor bolt or the like. In addition, the operator causes the pair of clamp portions 206 of the installation base 106 to be inclined at the same angle as the inclination angle of the stairs 102 with respect to the installation portion 200.

  Next, the operator places the starting point rail 112 at the lower end 118 of the stairs 102 as shown in FIG. 7B, and holds and operates the connection lever 210 (see FIG. 4C) of the installation base 106. Thus, the starting point rail 112 is clamped and fixed by the pair of clamp portions 206 without using a tool.

  Subsequently, as shown in FIG. 7C, the operator inserts and connects the first connection rail 114 to the start point rail 112, and clamps and supports the connection rail 114 with the installation base 106. Thus, the starting point rail 112 and the connection rail 114 are connected without using a tool, and are installed on the stairs 102 as shown in FIG. FIG. 8 corresponds to FIG. 7C and shows a state in which the start point rail 112 and the connection rail 114 are viewed from a direction substantially facing the stairs 102.

  Following FIG. 7C, the operator inserts and connects the second connection rail 114 to the first connection rail 114, as shown in FIG. 7D, and further installs the second connection 114. The base 106 is clamped and supported. In this manner, the connection rails 114 are connected without using a tool.

  Next, according to the length of the stairs 102, the worker selects one of the end point rails 116 having different lengths. Then, as shown in FIG. 7E, the operator inserts and connects the selected end point rail 116 to the second connection rail 114, and clamps and supports the end point rail 116 on the installation base 106. In this way, the second connection rail 114 and the end point rail 116 are connected without using a tool.

  In this way, the operator uses the tool to connect the rail 108 connecting the start point rail 112, the two connection rails 114, and the selected one end point rail 114 as shown in FIG. 7 (e). It can be installed on the stairs 102 without. Since the rail 108 is a split type, the overall length can be adjusted by changing the number of connection rails 140 used and the type of the end point rail 116 having a different length.

  Accordingly, the rail 108 can be installed on the staircase 102 having an arbitrary length, and can be reused. Therefore, the rail 108 can be easily and temporarily installed on the staircase 102. On the other hand, the rail 108 temporarily installed on the staircase 102 can be easily disassembled without using a tool by a procedure reverse to the installation procedure shown in the order of FIGS. 3A to 3E. .

  FIG. 9 is a diagram showing a procedure for attaching the transporter 110 to the rail 108. First, the operator inserts and connects the insertion rail 228 to the end point rail 116 as shown in FIG. For this reason, the upper end 232 of the insertion rail 228 that is cut horizontally is positioned above the upper end 120 of the staircase 102. Further, since the leg portion 234 is in contact with the upper end 120 of the staircase 102, the insertion rail 228 is stably placed on the upper end 120 of the staircase 102.

  Next, the worker places the drive unit 124 of the transporter 110 in a horizontal state, and further brings the drive unit 124 closer to the upper end 232 of the insertion rail 228. Then, the operator inserts the upper end 232 of the insertion rail 228 between the pinion 130 of the driving unit 124 and the lower rollers 136 and 138. For this reason, as shown in FIG. 9A, the drive unit 124 is configured so that the pinion 130 meshes with the rack 122 and the lower rollers 136 and 138 are opposed to the rack 122 in the rail 108 (here, the insertion rail 228). It contacts the surface 236 (lower surface). In this manner, the rail 108 is sandwiched between the pinion 130 and the lower rollers 136 and 138. For this reason, in the drive unit 124, the meshing between the pinion 130 and the rack 122 is stabilized, and the rotational force of the pinion 130 is reliably transmitted to the rack 122.

  9A, the drive unit 124 is attached to the insertion rail 228 on the upper end 120 of the flat staircase 102 in order to connect the insertion rail 228 to the end point rail 116. This is to prevent the worker from having a difficult posture when performing the mounting work on the staircase 102, and to prevent the drive section 124 from falling down the stairs when the drive section 124 is removed. By performing the operation at the upper end 120 of the flat staircase 102 by the insertion rail 228, the mounting operation can be easily performed and the safety can be improved. Further, since the upper end 232 of the insertion rail 228 is cut horizontally, the upper end 232 of the insertion rail 228 can be easily inserted between the pinion 130 of the driving unit 124 in the horizontal state and the lower rollers 136 and 138. .

  Next, the operator attaches the rod 142 to the drive unit 124 with the drive unit 124 riding on the insertion rail 228. After attaching the rod 142, the operator attaches the switchboard 126 to the rod 142. Subsequently, the worker attaches the cargo bed frame 128 to the connecting portion 140 and the rod 142 of the driving unit 124, and then keeps the cargo bed frame 128 horizontal by adjusting the length of the rod 142. In this manner, the transporter 110 including the drive unit 124, the switchboard 126, and the load carrier frame 128 kept horizontal is assembled.

  Subsequently, as illustrated in FIG. 9B, the worker moves the transporter 110 to the position of the end point rail 116 below the insertion rail 228. Then, the operator removes the insertion rail 228.

  Subsequently, as illustrated in FIG. 9C, the transporter 110 is moved until the top plate of the loading frame 128 of the transporter 110 is approximately at the same level as the upper end 120 of the stairs. An iron plate 238 is placed on the upper end 120 of the staircase and is adjacent to the cargo bed frame 128 of the transporter 110. In this manner, the transformer 104 placed on the caster cart 146 shown in FIG. 1 can be easily loaded from the iron plate 238 onto the loading frame 128 of the transporter 110.

  As described above, the stair transport device 100 in the present embodiment can easily install and disassemble the rail 108 on the staircase 102 without using a tool. Further, in the stair transport device 100, the rail 108 is temporarily installed on the stair 102, and a heavy object can be transported by the transport device 110 that travels on the rail 108.

  Further, in the stair transport device 100, the installation base 106 is merely placed on the staircase 102 and does not need to be fixed to the staircase 102 with an anchor bolt or the like, so that the staircase 102 is not damaged.

  Further, in the stair transport device 100, the rack 122 of the rail 108 is provided on the upper side of the rail 108, so that the pinion 130 of the transporter 110 that meshes with the rack 122 is positioned on the upper side of the rail 108. Therefore, according to the stair transport device 100, the pinion 130 of the transport device 110 is not positioned below the rail 108, and the rail 108 can be brought close to the stair 102, and the center of gravity of the entire device is lowered and stabilized.

  FIG. 10 is a diagram illustrating a stair transport device 100A according to a modification. The stair transport device 100A is applied to a folded staircase 240 instead of the staircase 102 shown in FIG. The stair transport device 100 </ b> A differs from the stair transport device 100 described above in that it includes two transport devices 110 and a transfer table 242.

  The folding staircase 240 includes an upper staircase 102A, a lower staircase 102B, and a landing 244 that connects the staircases 102A and 102B. The first transporter 110 travels on a rail 108A installed on the upper staircase 102A. In the drawing, the first transporter 110 travels downward along the rail 108 </ b> A and is located at the landing 244. The loader frame 128 of the transporter 110 is in a state in which the transformer 104 placed on the caster carriage 146 is loaded. Further, the leg portion 144 of the cargo bed frame 128 is in contact with the landing 244.

  The second transporter 110 travels on the rail 108B installed on the lower stairs 102B. In the drawing, the insertion rail 228 is connected to the end point rail 116 of the rail 108 </ b> B, and the second transporter 110 is located at the landing 244. Further, the leg portion 234 of the insertion rail 228 is in contact with the landing 244.

  The transfer table 242 is placed on the landing 244 as shown. Further, the transfer table 242 is located between the load carrier frames 128 of the two transporters 110 and is in contact with the two load carrier frames 128 and has the same height.

  In such a stair transport device 100A, the transformer 104 mounted on the caster cart 146 is transferred from the cargo bed frame 128 of the first transport device 110 via the transfer base 242 to the second transport device 110. The loading frame 128 can be easily transferred. Then, the transformer 104 can be transported to the lower end of the staircase 102B by causing the second transporter 110 to travel downward along the rail 108B.

  Therefore, according to the stair transport device 100A, the rails 108A and 108B are temporarily installed on the staircases 102A and 102B, and the transfer table 242 is temporarily installed on the landing 244 so that the transport is performed along the return staircase 240. The machine 110 can carry heavy objects.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to this example. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  INDUSTRIAL APPLICABILITY The present invention can be used as a stair transport device that transports heavy objects along a stair.

100, 100A ... stair transport device, 102, 102A, 102B, 240 ... staircase, 104 ... transformer, 106 ... installation base, 108, 108A, 108B ... rail, 110 ... transporter, 112 ... starting rail, 114 ... connection Rail 116, end point rail 118, lower end of staircase 120, upper end of staircase 122, rack 124, driving unit 126, switchboard 128, loading frame 130, pinion 132, 134 upper roller 136 DESCRIPTION OF SYMBOLS 138 ... Lower roller, 140 ... Connecting part, 142 ... Rod, 144 ... Leg of loading frame, 146 ... Caster carriage, 148 ... Floor floor, 150 ... Lift carriage, 152 ... Inclined carriage, 153 ... Lift carriage 154, 156 ... lower rail, 158, 160 ... upper rail, 162, 164 ... connecting member, 166 168, 170, 172, 174, 176 ... Fixing member, 178, 180 ... Upper end of the lower rail, 182, 184 ... Lower end of the lower rail, 186, 188 ... Upper end of the upper rail, 190, 192 ... Hole at the upper end 194, 196 ... lower end of upper rail, 198, 199 ... lower end hole, 200 ... installation part, 202 ... rotating part, 204 ... connecting shaft, 206 ... clamping part, 208 ... installation surface, 210 ... connection lever, 212 , 214 ... Connecting pin, 216 ... Lower end of start rail, 218, 220 ... Upper end of start rail, 222, 224 ... Lower end of end rail, 226 ... Upper end of end rail, 228 ... Insert rail, 230 ... Lower end of insert rail, 232: Upper end of insertion rail, 234: Leg of insertion rail, 236 ... Opposing surface, 238 ... Iron plate, 242 ... Transfer table, 244 ... Landing

Claims (7)

An installation base placed at multiple heights on the stairs;
A rail supported by the installation base;
A transporter traveling on the rail,
The installation base supports the rails by clamp fixing. The installation base is
An installation part having an installation surface in contact with the stairs;
A clamp part for supporting the rail by clamping;
A connecting shaft that rotatably connects the installation part and the clamp part,
The installation part has a width in the rotation direction of the clamp part,
The stair transporter according to claim 1, wherein the width has a length such that a center of gravity of the clamp portion is located in the installation surface when the clamp portion is inclined by 45 degrees.   The stair transporter according to claim 1 or 2, wherein the rail is a split type that is divided into a plurality of parts, and is connected by inserting each part. The rail is
A starting rail located at the bottom of the stairs,
A connection rail connected to the starting point rail and used in plurality.
The stair transport device according to claim 3, further comprising a plurality of end point rails of different lengths connected to the connection rail and disposed at an upper end of the staircase. The rail further includes an insertion rail coupled to an upper end of the end point rail,
The stair transport device according to claim 4, wherein an upper end of the insertion rail extends above an upper end of the staircase. The transporter is
A pinion meshing with the rail rack;
A roller in contact with a surface of the rail that faces the rack; and
6. The stair transport device according to claim 5, wherein an upper end of the insertion rail is cut horizontally and is inserted between the pinion and the roller of the transport machine.   The stair transport device according to claim 6, wherein the rail rack is provided on an upper side of the rail.

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