JP6159094B2 - Moving scaffold - Google Patents

Description

  The present invention relates to a mobile scaffold, and more particularly to an improvement of a mobile scaffold that forms a work scaffold when working at a high place.

  There have been various proposals so far as a moving scaffold for forming a work scaffold for work at a high place. For example, in the proposal disclosed in Patent Document 1, a work floor provided on a carriage having wheels is a lifting device. The elevating device has a pantograph-structured extendable leg.

  And in the proposal of this document disclosure, the moving scaffold has four corner struts that suppress the shaking of the work floor. Therefore, in this moving scaffold, when the telescopic legs of the pantograph structure expand and contract, etc. The swinging of the work floor can be effectively prevented by the four-corner struts, and the work floor can be lifted and lowered stably by the expansion and contraction of the extendable legs.

  As a result, by introducing this moving scaffold into, for example, a tunnel, a worker who enters the raised work floor can safely perform work at a high place in the tunnel.

JP 2011-137321 A

  By the way, if the tunnel that uses the mobile scaffolding is a subway tunnel and the work time is about 3 to 4 hours from the end of the last train to the start of the first train, the mobile scaffold is on the subway ground. It takes time to introduce the vehicle from a vehicle depot into the tunnel and move it to the destination, and there is a concern that the time during which work can be substantially performed at the destination will be shortened.

  Therefore, it is best to introduce the mobile scaffold used in the subway tunnel into the subway tunnel via the station nearest to the destination, that is, the premises of the nearest station. Since the mobile scaffolds proposed to date, including the proposals disclosed in No. 1, have a larger volume than ladders and stepladders, the mobile scaffolds can be installed in the tunnel via the subway entrance and station premises. It becomes impossible to introduce into

  From this, it is good to carry into the station premises through the entrance of the subway from the ground in a state where the mobile scaffold is temporarily disassembled into each component, but in the mobile scaffold that has been proposed in the past, Although it is disassembled for repairs, etc., it is assembled to be used after removal, but it is not designed to allow disassembly and assembly in a short time for use and removal. It can be said that disassembly and assembly in a short time is impossible.

  The present invention has been made in view of the above-described present situation, and an object of the present invention is to provide a moving scaffold that can be disassembled and assembled in a short time.

In order to achieve the above-described object, one solution of the present invention is a carriage that has wheels that roll on a rail or a roadbed, and is movable, and allows the person to enter by moving up and down on the carriage. and a working floor, the carriage is movable by human power, the working floor is lifting stretchable human-powered telescopic legs provided between the bogie, detachably erected above stretchable leg above carriage A lower leg and an upper leg that is separably connected to the work floor and is inserted into the lower leg so as to be movable up and down. One end is connected to the upper leg and the other end is In the moving scaffold for work in the tunnel having the tow rope hung around the lower leg ,
The work floor is composed of a fixed main body part, an auxiliary part connected to the main body part so as to be movable in and out, and an arm connected to the auxiliary part so as to be able to advance and retreat, and at the upper four corners of the lower leg. A grooved roller that contacts the outer vertical edge of the upper leg is provided at the inner corner, and a grooved roller that contacts the inner corner of the lower leg is provided at the outer corner of the lower corner of the upper leg. carriage, in which the working floor, the lower leg and the upper leg to permit transport by the human, the upper legs, characterized in that the vertically movable relative to the lower leg in traction by human power of the tow is there.
Similarly, the other means includes a carriage that has wheels that roll on a rail or a roadbed and is movable, and a work floor that moves up and down on the carriage to allow people to enter,
The above cart can be moved manually,
The work floor is raised and lowered by human extension of the extendable legs provided between the cart and the cart,
A lower pedestal in which the telescopic legs are detachably installed on the carriage, an upper pedestal connected to the work floor in a separable manner, and a middle pedestal connected to the upper and lower pedestals so as to be movable up and down. A lower traction line having one end connected to the middle leg and the other end side hung to the lower leg, and one end connected to the upper leg and the other end hung to the middle leg. In a moving scaffold for work in a tunnel having an upper towline to be turned,
The work floor is composed of a fixed main body part, an auxiliary part connected to the main body part so as to be movable in and out, and an arm connected to the auxiliary part so as to be able to advance and retreat, and the middle leg is a lower body, An upper body that is separably connected to the lower body, the lower body is movably connected to the lower leg, the upper body is movably connected to the upper leg, the carriage, the work floor The lower leg, the upper leg, and the middle leg allow manual conveyance, the middle leg can be lifted with respect to the lower leg by manual pulling of the lower tow rope, and the upper leg is the upper It is characterized in that it can be raised with respect to the middle leg by traction of the traction measure by human power.

In the mobile scaffold of the present invention, since the cart as the component, the work floor, the lower pedestal as the extendable leg and the upper pedestal allow manual conveyance, each component is connected to the station through the entrance of the subway on the ground, for example. In addition to being able to be carried into the premises, it is possible to introduce the moving scaffold into the subway tunnel by assembling the moving scaffold using the components within the station premises.
The work floor has an arm in the auxiliary part, and the arm is connected to the auxiliary part so as to be able to advance and retreat. It can prevent shaking in the direction across the tunnel.

  And since the carriage can be moved by human power, the total weight of the moving scaffold is reduced by the amount of the carriage that does not have a driving mechanism that uses power compared to the case where the carriage has a driving mechanism that uses power for movement. This makes it easy to manually disassemble each component in a disassembled state, and facilitates disassembly and assembly of the moving scaffold in a short time.

  In addition, since the work floor can be lifted and lowered manually, compared to the case where the work floor has a lifting mechanism that uses power for lifting, the total weight of the moving scaffold is equivalent to the absence of a lifting mechanism that uses power. This contributes to a reduction in the number of components, facilitates manual conveyance of each component in a disassembled state, and facilitates disassembly and assembly of the moving scaffold in a short time.

  When assembling the moving scaffold, each component makes it easy to carry by hand. Therefore, the lower pedestal that constitutes the telescopic leg is erected on the carriage by hand without using heavy machinery, and the upper pedestal is placed on the lower pedestal. The work floor is connected to the upper stage leg, one end of the tow rope is connected to the upper stage leg, and the other end of the tow line is connected to, for example, a manual hoisting machine provided on the carriage. Can be used.

  As a result, according to the moving scaffold of the present invention, since the operation of connecting the components and the operation of separating the components can be manually performed, the heavy machinery is prepared or removed as compared with the case of using the heavy machinery. This eliminates the need for labor and setup, and enables disassembly and assembly of the mobile scaffold in a short time.

  In the present invention, when the moving scaffold is carried on a truck bed, for example, it can be disassembled into each component and loaded on the bed, so that it is loaded on the bed in an assembled state. Compared to, it becomes possible to reduce the packaging.

  Further, in the present invention, when a component such as a bending or breakage occurs in a moving scaffold, it can be reused only by replacing the component, and the moving scaffold can be used. It becomes possible to improve the usability.

  Furthermore, in the present invention, since there is no drive mechanism that uses power and no elevating mechanism that uses power, even if the commercial power supply is not maintained or the commercial power supply cannot be used due to failure, etc. It is possible to realize the movement on the moving scaffold and the raising / lowering of the work floor, and the predetermined work is not delayed.

1 is a schematic elevation view showing in principle a moving scaffold according to an embodiment of the present invention. FIG. 2 is a schematic elevation view showing an operating state of the moving scaffold of FIG. 1. It is a schematic elevation view which shows the movement scaffold by other embodiment of this invention in principle. FIG. 4 is a schematic elevation view showing an operating state of the moving scaffold of FIG. 3. It is a figure which shows an example of the trolley | bogie in a moving scaffold, (A) is an elevation, (B) is a top view. It is the elements on larger scale which show the connection state of an example of the expansion-contraction leg in a movement scaffold, (A) is an elevation, (B) is a cross-sectional view shown by the XX line position in (A). It is the elements on larger scale which show an example of the middle leg in a movement scaffold. It is a partial expansion exploded elevation view which shows the connection structure in an example of the middle step leg in a movement scaffold. It is the elements on larger scale which show an example of the work floor in a moving scaffold, (A) is a front view, (B) is a top view.

  Below, based on embodiment shown in figure, the moving scaffold by this invention is demonstrated. The moving scaffold according to the present invention is movable with the wheels 11 rolling on the rail R or the roadbed B as shown in FIGS. 1, 2, 3 and 4 which show the principle of the moving scaffold. Toro cart 1 as a cart and a work floor 2 that moves up and down on the Toro cart 1 to allow entry of people, and is introduced into a tunnel T of a subway, for example, an inner wall of the tunnel T It is said to be suitable for forming a scaffold for temporary partial work such as repairing peeling (not shown), that is, a work scaffold.

  Incidentally, the mobile scaffold shown in FIGS. 1 and 2 is a mobile scaffold according to an embodiment of the present invention, and the mobile scaffold shown in FIGS. 3 and 4 is a mobile scaffold according to another embodiment of the present invention.

  In the present invention, the movement of the moving scaffold to a desired location (destination) is realized by movement of the Toro cart 1, that is, rolling of the wheels 11 of the Toro cart 1 along the rail R or the roadbed B. It is assumed that the external force acting on the Toro cart 1 at that time depends on human power.

  By moving the Toro cart 1 manually, that is, by not having a drive mechanism that uses power for moving the Toro cart 1, it contributes to lowering the product cost in the moving scaffold, and the total weight of the moving scaffold 1 It is possible to reduce the number of components, so that manual transportation when disassembled into the respective components is facilitated, and disassembly and assembly of the moving scaffold can be facilitated in a short time.

  That is, in the disassembly and assembly of a moving scaffold having a drive mechanism that uses power for movement, for example, in order to reliably connect and disconnect the electrical system and the like that constitute the drive mechanism that uses this power, There will be a tendency to require elaborate work, and there is a concern that disassembly and assembly of the moving scaffold in a short time may not be easily performed, but in the present invention, it does not have a drive mechanism that uses power and moves It is possible to easily disassemble and assemble the scaffold in a short time.

  The Toro cart 1 is a part that constitutes a base in this moving scaffold, and is arbitrarily formed as long as it has sufficient mechanical strength to receive a load from each component including the work floor 2. However, it is preferably formed so as not to make it difficult to carry the Toro cart 1 manually. By the way, in the moving scaffold of the present invention, it is assumed that each component of the work floor 2 and the telescopic legs S, which will be described later, including the Toro cart 1 permits manual conveyance.

  The wheel 11 in the Toro cart 1 moves when the Toro cart 1 is introduced into the tunnel T when the Toro cart 1 is away from the desired location, or for changing the work location. Used when moving.

  And although the wheel 11 is based on rolling the rail R, if this invention intends, it may drive | work the roadbed B which lays the rail R without rolling the rail R. Of course. Moreover, although not shown in figure, in order to roll the rail R, the wheel 11 is formed in a known structure, such as having a flange that prevents the wheel R from being removed from the rail R in the lateral direction.

  The work floor 2 is configured to be lifted and lowered by human expansion and contraction of a telescopic leg S provided to be separable from the Toro cart 1, and the telescopic leg S is a Toro cart 1 in the embodiment shown in FIGS. It is set as the structure which has the lower stage leg 3 standingly separable in this and the upper stage leg 4 connected to the work floor 2 so that separation is possible.

  The lower leg 3 and the upper leg 4 constituting the extendable leg S are connected so as to be able to move relative to each other, that is, in the illustrated case, the upper leg 4 protrudes and appears inside the lower leg 3. Moreover, the upper leg 4 can move up and down along the lower leg 3. Incidentally, as long as the expansion / contraction operation of the expansion / contraction leg S is ensured, the lower pedestal 3 may be configured to appear and disappear inside the upper limb 4, contrary to the above.

  1 and FIG. 2, the telescopic leg S of the embodiment shown in FIGS. 3 and 4 is provided with a lower leg 3 that can be separated from the Toro cart 1 and a work floor 2. The upper leg 4 is connected to the lower leg 3 and the middle leg 5 is connected to the upper leg 4 and is movable up and down with respect to the lower leg 3 and the upper leg 4.

  The lower leg 3 and the middle leg 5, and the upper leg 4 and the middle leg 5 are connected so as to be able to move relative to each other, that is, in the drawing, the middle leg is located inside the lower leg 3. The leg 5 is projected and retracted, the upper leg 4 is projected and projected inside the middle leg 5, and the middle leg 5 can be moved up and down along the lower leg 3, and the upper leg 4 is 5 can be moved up and down.

  The height of the lower leg 3 and the upper leg 4 in the case where the telescopic leg S has the so-called two-stage configuration shown in FIGS. When the dimensions are the same, it is natural that the working floor 2 has no middle step leg 5 and, in particular, the highest rising position is different, but the situation of using this moving scaffold is known in advance, In the telescopic leg S, the necessity of the middle leg 5 is considered in advance.

  By the way, in this invention, the raising / lowering of the work floor 2 to the desired height is raised / lowered so as to be matched with the height position of the high-altitude work performed by the worker. As for raising to a desired height position above, it is assumed that the lifting mechanism using power is not used, that is, it is raised by human power.

  And since it does not use the raising / lowering mechanism which uses motive power for raising / lowering of the work floor 2 in a moving scaffold, since there is no raising / lowering mechanism using the motive power for raising / lowering the work floor 2, the product cost in a moving scaffold is reduced. This contributes to a reduction in cost and enables the overall weight of the moving scaffold to be reduced, facilitating manual transportation when disassembled into each component, and further disassembling and assembling the moving scaffold in a short time. It can be easily done.

  That is, in disassembling and assembling a moving scaffold having an elevating mechanism that uses power for raising and lowering the work floor 2, for example, a rack and pinion mechanism that constitutes an elevating mechanism that uses power is reliably separated and connected. In order to do so, there is a tendency that elaborate work is required, and there is a risk that disassembly and assembly of the moving scaffold in a short time may not be easily performed. Therefore, disassembly and assembly can be easily performed in a short time on the moving scaffold.

  Returning, it is assumed that the telescopic legs S, that is, the lower leg 3, the upper leg 4 and the middle leg 5 are formed so as to be possible to reduce the weight as much as possible. In particular, the frame structure is formed in a so-called cylinder shape so that a space in which an operator can enter is made to appear inside.

  By the way, in this moving scaffold, consideration is given to reducing the weight of each constituent member other than the telescopic legs S so that the weight of each constituent member can be handled manually by the aluminum alloy. doing.

1 and 2, the moving scaffold has a tow rope W1 (see FIG. 1) made of a wire for extending and retracting the telescopic leg S by human power, as shown in FIGS. As shown in FIG. 3, the lower towline W2 (see FIG. 3), which is one of the wires for extending and retracting the telescopic leg S by human power, and the upper towline W3 (see FIG. 3), also made of the same wire, which is the other. ).

  As shown in FIG. 1, the tow rope W1 has one end connected to the upper leg 4 and the other end is hung around the lower leg 3 via the pulley 3a. 3, one end is connected to the middle leg 5 and the other end is hung around the lower leg 3 via the pulley 3b, and the upper retraction line W3 is connected to one end as shown in FIG. The part is connected to the upper leg 4 and the other end is hung around the middle leg 5 via the pulley 5a.

Note that the towing line W1, the lower tow line W2, and the upper tow line W3 are described only in FIG. 1 or FIG. 3 in FIG. 2 and FIG. The description is omitted.

The tow ropes W1, W2, and W3 are towed by human power. Specifically, as shown in FIG. 1, the manual hoisting machine P1 uses the towing rope W1 by using a manual hoisting machine provided on the Toro cart 1. As shown in FIG. 3, the manual hoisting machine P2 winds up the other end of the lower towing line W2, and the manual hoisting machine P3 is the other end of the upper towing line W3. Winding the side.

  Although not shown, each manual hoisting machine P1, P2, P3 has a drum that rotates by the operation of the handle, and each of the manual hoisting machines P1, P2, P3 has a reverse rotation prevention mechanism that prevents so-called unnecessary reverse rotation of each drum. The other ends of the tow ropes W1, W2, and W3 are connected to the drum, so that the tow lines W1, W2, and W3 can be wound and sent out by the rotation of the drums.

  By the way, the telescopic leg S having a three-stage structure shown in FIGS. 3 and 4 will be described a little. In addition to the lower leg 3 and the upper leg 4, the telescopic leg S includes a middle leg 5 to which the lower leg 3 is coupled and the upper leg 4 is coupled. The middle leg 5 is a lower body that is divided into upper and lower parts. It is basically composed of 5b and upper body 5c.

  In the illustrated embodiment, the lower body 5b is divided into a lower body 5b and an upper body 5c, the lower body 5b is connected in advance to the lower leg 3 so as to be movable up and down, and the upper body 5c is connected to the upper leg 4 in advance. It is assumed that the lower body 5b and the upper body 5c are connected to each other in a separable manner so that the lower body 5b and the upper body 5c can be separated after heeling, that is, when the moving scaffold is assembled.

  That is, in the embodiment shown in FIGS. 3 and 4, the lower leg 3 and the upper leg 4 as the constituent members are configured such that the mode when being transported includes the lower body 5 b or the upper body 5 c. As a result, even if the telescopic leg S has the middle leg 5 in addition to the lower leg 3 and the upper leg 4, it is not necessary to manage and transport the middle leg 5 as one component. It will be.

  Incidentally, in the illustrated case, the middle stage leg 5 is divided into a lower body 5b and an upper body 5c in advance and is connected to the lower stage leg 3 or the upper stage leg 4 so as to be raised and lowered. However, when assembling the moving scaffold, the lower body 5b of the middle leg 5 is connected to the lower leg 3 so as to be movable up and down, and the upper leg 4 is connected to the upper body 5c of the middle leg 5 so as to be raised and lowered. It is good as a setup.

  Returning, the work floor 2 may be arbitrarily formed as long as it allows entry of workers, but is basically formed of an aluminum alloy in the same manner as the Toro cart 1 and the extendable legs S described above. For example, as shown in FIGS. 1 to 4, the axial direction corresponds to the width of a so-called narrower ceiling portion (not shown) that is narrower above the tunnel T, with the axis direction crossing the laying direction of the rail R. It is good to form so that it may have a length (refer FIG. 4).

  By the way, in the moving scaffold shown in FIG. 3 and FIG. 4, when it is assembled and ready for use, the lowermost position of the work floor 2, that is, as shown in FIG. The position of the work floor 2 when the middle leg 5 is in the lowest position and the upper leg 4 is in the lowest position with respect to the middle leg 5 is within a range where a worker standing on the roadbed B with the rail R can reach. It is set to be upward.

  In other words, it is not necessary to use the work floor 2 for work within the reach of the worker standing on the roadbed B. Therefore, the work within the reach of the worker standing on the roadbed B enters the work floor 2. It is set so that the work floor 2 that has been lowered to a height position that can be executed by an operator is positioned. By the way, in the mobile scaffold shown in FIGS. 1 and 2, it is set so that a worker who enters the work floor 2 in the most elevated state can perform a so-called work at a high place.

  In addition, the width of the work floor 2, that is, the dimension in the width direction along the laying direction of the rail R may be formed so as to have a dimension sufficient for one worker to work. Of course, it is not absolute, and it may be formed to have a size sufficient for two or more workers to work in parallel.

  By the way, it is preferable that the work floor 2 can be expanded and contracted in the length direction, that is, in the direction crossing the laying direction of the rail R, and in the illustrated case, as shown in FIG. A pair of auxiliary portions 2b that are front and rear portions are connected to the main body portion 2a having a fixed length so as to be movable, that is, the auxiliary portions 2b are connected to the main body portion 2a so as to be able to appear and retract. It is going to be.

  In addition, although it is not shown in each figure of FIG.1, FIG.3 and FIG.4 that the work floor 2 has the auxiliary | assistant part 2b in the main-body part 2a and can be extended-contracted in a length direction, The same applies to the cases shown in FIGS.

  The work floor 2 has an auxiliary portion 2b with respect to the main body portion 2a and is configured to be extendable and contracted so that the work floor 2 has a length corresponding to the width of a so-called wide main portion (not shown) of the tunnel T. It is possible to widen the use area of the work floor 2.

On the other hand, as shown in FIG. 2, the work floor 2 has arms 21 in the pair of auxiliary portions 2b, and the arms 21 can advance and retreat in a direction crossing the axis direction of the rail R with respect to the auxiliary portions 2b. In the drawing, the contact portion 21a, which is the tip portion, is in contact with the wall of the opposing tunnel T, thereby preventing the work floor 2 from shaking in the direction crossing the tunnel T.

  The arm 21 is not illustrated from the viewpoint of so-called sway prevention, but is formed of a long bolt whose head is a contact portion 21a, for example, and can appear at both ends of the auxiliary portion 2b. However, when the Toro cart 1 is moved along the rail R in a state where the arm 21 is used, that is, the arm 21 is projected, the Toro cart 1 can be smoothly installed. In order to enable movement, the arm 21 has an elastic member and is mounted on the auxiliary portion 2b, and the abutment portion 21a has a roller so that unevenness on the wall surface of the tunnel T when the Toro cart 1 moves, etc. Depending on the deformation, the roller may roll and the contact portion 21a may advance and retract to expand and contract.

  The arms 21 are provided as a pair of left and right in the auxiliary portion 2b as shown in the drawing, but may be provided as a single unit, although not shown in the figure, as long as they function as a rocking stopper.

  Further, the work floor 2 preferably has a handrail 22 formed of a pipe and a toe plate (not shown) formed of a plate material, as is the case with almost all kinds of work floors. Not only the part 2a but also the auxiliary part 2b may be provided.

  Incidentally, the handrail 22 is preferably provided on the work floor 2 and in a direction crossing the rail R or the roadbed B, so that an operator on the work floor 2 falls on the rail R or the roadbed B. Can be avoided in advance. In addition, the toe plate prevents in advance that a tool or the like placed on the work floor 2 is kicked off by an operator or the like and falls outside the work floor 2.

  Note that the end of the work floor 2 in the direction crossing the rail R or the roadbed B faces the wall of the tunnel T, so there is no problem even if the handrail is not provided, but the handrail is provided. Of course, a toe plate may be provided.

  The work floor 2 has a floor portion (not shown), which is not shown in the figure, but, as is the case with this type of work floor, spanning a scaffolding plate that contributes to the reduction of the overall weight and enables the attachment / detachment. In addition, an opening that allows an operator to enter and leave the work floor 2 is provided, and the opening may be opened and closed with a hatch. In addition, although not shown in figure, the worker provided in the inside of the expansion-contraction leg S may be utilized for the entrance / exit of the worker with respect to the work floor 2, and it is assumed that the expansion-contraction leg S itself is used as a ladder. Also good.

  The moving scaffolds shown in FIGS. 1 and 2 formed as described above are divided into four members, that is, a toro cart 1, a work floor 2, a lower leg 3 as an extendable leg S, and an upper leg 4. Thus, the manual transfer operation can be performed quickly without being unnecessarily complicated.

  In addition, even in the moving scaffold shown in FIG. 3 and FIG. Thus, the manual transfer operation can be performed quickly without being unnecessarily complicated.

  Incidentally, the traction measures W1, W2, and W3 are specifically wound around the manual hoisting machines P1, P2, and P3, and the manual hoisting machines P1, P2, and P3 are connected to the Toro cart 1 Therefore, the components to be transported are not independent, but are transported together with the Toro cart 1.

  One end of each of the traction measures W1, W2, and W3 is pulled out from each manual hoisting machine P1, P2, and P3 when the moving scaffold is assembled, and is connected to the corresponding upper leg 4 or middle leg 5.

  3 and 4, the middle leg 5 is divided into a lower body 5b and an upper body 5c. The lower body 5b is the lower leg 3, and the upper body 5c is the upper leg 4. Since they are connected so as to be movable up and down without being separated, they are not independent components.

  However, the middle leg 5 is divided into a lower body 5b and an upper body 5c, but may be connected to the lower leg 3 and the upper leg 4 without being divided. In this case, the lower leg 3 and the upper leg 5 are connected. 4 is an independent component separated from 4.

  By the way, each component of the above-described Toro cart 1, work floor 2, lower leg 3, telescopic leg S, upper leg 4, and middle leg 5 allows manual conveyance. This means that manual conveyance is allowed. Next, the size means that manual conveyance is allowed. The term “by hand” means that a transport mechanism that uses power is not used. Therefore, the hand may be composed of a plurality of people instead of only one.

  As for the weight, the average weight that an average adult worker can easily carry alone is, for example, around 20 kilograms, and moreover, as the weight that can be carried by a plurality of, for example, four workers. The size is about 50 to 80 kilograms, and the size is such that one side that can easily pass through the entrance and exit on the ground of the subway fits inside a cube or cuboid that is 60 to 90 centimeters, for example. Is good.

  As each component is configured to allow manual transportation, for example, each component can be manually transported from the ground to the station via the subway entrance and exit. The components can be manually transported from the home to the inside of the track, that is, to the rail R or the roadbed B. And the conveyance opposite to the above of each structural member at the time of removal is also attained easily.

  As a result, for example, in the conventional mobile scaffold disclosed in Patent Document 1, it is not assumed to be disassembled during use and removal, so that it is introduced into the tunnel T of the subway. Will be moved to the destination by using the rail R from the subway vehicle base on the ground or by using a dedicated vehicle, etc. In the mobile scaffold of the invention, the mobile scaffold can be easily introduced into the destination in a short time, and can be easily removed.

  This proves to be very meaningful when considering the scene where this moving scaffold is used. In other words, when the scene where this moving scaffold is used is the limited time until the first power generation car starts running after the last train passes in the tunnel T of the subway as described above, for example, It takes 3 hours from 1 am to 4 am, so it takes a long time to introduce it into the tunnel T, or it takes a long time to remove it from the tunnel T. I can't. Therefore, a moving scaffold that enables a predetermined work to be executed in as short a time as possible is necessary, and the present invention is ready to respond to this request.

  The moving scaffold according to the present invention is formed as described above in principle. However, the specific state of each component constituting the moving scaffold will be further described. First, the Toro cart 1 is also illustrated in FIG. As shown, it has a wheel 11 that rolls on a rail R (see FIGS. 1 to 4) laid in a tunnel T (see FIGS. 1 to 4), and can move freely along the rail R. Yes.

  From this point of view, it is preferable that the mounting position of the wheel 11 can be changed in the direction crossing the rail R, although it is not shown in detail. That is, when the wheel 11 rolls on the rail R in the Toro cart 1, the width of the rail R, that is, the width between the left and right wheels of the railway vehicle, is roughly classified into a wide gauge and a narrow gauge. Therefore, it is preferable that the position of the wheel 11 connected to the Toro cart 1 can be changed in a direction crossing the rail R so as to correspond to this.

  By the way, when the moving scaffold is introduced into the tunnel T of the subway, it is known in advance whether the subway has a wide gauge or a narrow gauge, so the connection position of the wheel 11 with respect to the Toro cart 1 is selected in advance. By doing so, the operation of changing the arrangement position at the so-called site is not required.

  In addition, when the moving scaffold is introduced into the tunnel T of the subway, since the situation in the roadbed B (see FIGS. 1 to 4) in the tunnel T is also known in advance, the wheels 11 travel on the roadbed B. Even in this case, by selecting the connection position of the wheel 11 with respect to the Toro cart 1 in advance, the operation of changing the arrangement position at the site is not required.

  By the way, as shown in the figure, the Toro cart 1 is formed of an aluminum alloy and, as shown in FIG. 5B, two pipes provided in a direction crossing the laying direction of the rail R, that is, two corners. The pipe 12 is formed by connecting two connecting pipes 13 provided in the direction in which the rail R is laid to form a square planar shape, and the lower leg 3 can be separated on the upper surface as shown in FIG. Is going to be erected.

  In the Toro cart 1, the length of the square pipe 12 in the direction crossing the direction in which the rail R is laid, that is, the width is set to be smaller than the width of the tunnel T of the subway. Although not shown, the square pipe 12 is formed of an outer pipe and an inner pipe, so that the inner pipe can be extended and retracted with respect to the outer pipe, and the width of the tunnel T can be varied. It is also good.

  Incidentally, the axial length of the connecting pipe 13 provided in the direction of the rail R and connected to the square pipe 12 in the Toro cart 1 may be basically arbitrary, In this case, it is assumed that the length of the square pipe 12 is almost the same as that of the square pipe 12, so that the length of the square pipe 12 is not unnecessarily long. Further, the two connecting pipes 13 may be replaced with plate materials, though not shown, in view of their function.

  In addition, in the place mentioned above, before the Toro cart 1 is introduced into the tunnel T, the Toro cart 1 is connected in advance by two connecting pipes 13 in which two square pipes 12 are separately prepared. It is assumed that it is formed so as to exhibit a planar shape, but instead of this, two joints are separately prepared in such a manner that two square pipes 12 are mounted on the rail R by using the wheels 11 or the like. It may be formed so as to have a rectangular planar shape on the rail R so as to be connected by the pipe 13.

  Thus, when the Toro cart 1 is introduced into the tunnel T in a so-called disassembled state with two square pipes 12 and two connecting pipes 13, the number of parts in the Toro cart 1 increases. In addition, although the number of assembly steps is increased, it is advantageous in that the manual transfer operation is easier.

  In addition, when the Toro cart 1 is composed of two square pipes 12, the Toro cart 1 is realized by connecting the lower leg 3 to the two square pipes 12. This is advantageous in that the configuration of the Toro cart 1 can be simplified.

  Returning, the Toro cart 1 is illustrated with a base 14 having a threaded rod 14a (see FIG. 5A) extending upward on the upper surface in order to detachably mount the lower leg 3. It is provided integrally on the upper surface of the four corners.

  The base 14 has a handle 14b (see FIG. 5A) screwed on a thread rod 14a, and the handle 14b itself is moved up and down by the rotation of the handle 14b, and the handle 14b is moved up and down. The collar 14c with the lower end in contact with the handle 14b is raised and lowered, and the lower end of the lower leg 3 with which the upper end of the collar 14c comes into contact with the raising and lowering of the collar 14c to adjust the level of the lower leg 3 In other words, it is assumed that a level adjusting mechanism between the Toro cart 1 and the lower leg 3 is configured.

  In addition, in the above-described base 14, the illustrated threaded rod 14 a is erected in a fixed state on the upper surface of the Toro cart 1, but instead of this, on the upper surface of the Toro cart 1, although not illustrated. It may be erected so that it can swing.

  At this time, when the swinging direction of the thread rod 14a is a direction crossing the laying direction of the rail R, since the rail R has a cant in a curve, the moving scaffold on the rail R is inclined inward of the curve. It may be possible to adjust the so-called level adjustment in the event that it happens.

  On the other hand, when the swinging direction of the thread rod 14a is the laying direction of the rail R, the rail R is tilted in the front-rear direction, so that the moving scaffold on the rail R is tilted in the front-rear direction of the rail R. If so, the so-called level adjustment can be made possible.

  By the way, when the roadbed B has a gradient in the front-rear direction as the laying direction of the rail R, the Toro cart 1 moves in a state where the wheels 11 are on the inclined roadbed B or on the inclined rail R. Since the use of the scaffold becomes an unfavorable use state, the wheel 11 can be separated from the roadbed B or the rail R by the outrigger.

  When the curved rail R has a cant, the moving scaffold placed on the rail R is inclined to the inside of the so-called curve, so that the outrigger is also prevented from preventing the moving scaffold from tilting. It is an important function to ensure the separation of the wheel 11 from the rail R. Incidentally, the outrigger naturally maintains the Toro cart 1 horizontally regardless of whether the rail R has a cant.

  For this reason, the illustrated outrigger is provided perpendicularly to the guide pipe 15 that protrudes and protrudes to an arbitrary length along the axial direction of the square pipe 12 at both ends of the two square pipes 12. The lift shaft 16 made of a threaded rod and a caster 17 provided at the lower end of the lift shaft 16 are provided. Incidentally, as described above, when the square pipe 12 is formed of the outer pipe and the inner pipe, the inner pipe may be the guide pipe 15 described above.

  Therefore, in this outrigger, the caster 17 is seated on the roadbed B in the tunnel T, for example, so that the wheels 11 can be floated on the rail R, and the Toro cart 1 is moved to the rail R. Speaking along the way, it can prevent you from moving on your own. In view of the above, in the illustrated outrigger, the caster 17 may be replaced with a base plate that does not allow rolling, although not illustrated.

  Further, in the illustrated outrigger, that is, the outrigger having the caster 17 seated on the roadbed B at the lower end, the outrigger, that is, the Toro cart 1 is moved in the direction crossing the rail R by the rolling of the caster 17, or It will be possible to move in the direction in which the rail R is laid.

  Next, a connection structure between the lower leg 3 and the upper leg 4 in the telescopic leg S, a connection structure between the lower body 3 and the lower body 5b in the middle leg 5, and the upper leg 4 and the middle leg 5 About the connection structure between the upper body 5c in FIG., The same connection structure is employ | adopted in the place shown in figure.

  In the following, this connection structure will be described. In the illustrated case, the connection state between the lower leg 3 and the upper leg 4 is taken as an example, and between the lower body 5b of the lower leg 3 and the middle leg 5, And about each connection structure between the upper stage leg 4 and the upper body 5c in the middle stage leg 5, illustration is abbreviate | omitted and the description is abbreviate | omitted.

  In connecting the upper leg 4 and the lower leg 3, as shown in FIG. 6, the lower end side portion of the upper leg 4 is inserted into the lower leg 3 through the upper end of the lower leg 3 so as to be retractable (( A)), and in this state, the outer peripheral groove 6a ((B) of the grooved roller 6 provided rotatably at the inner corners of the four corners (not shown) of the upper end of the lower leg 3. (See FIG. 4) is brought into contact with the vertical edge 4a outside the four corners (not shown) of the upper leg 4.

  At this time, although not shown in detail, the outer peripheral groove of the grooved roller 6 rotatably provided at the outer corners of the four corners at the lower end of the upper leg 4 is the inner vertical edge at the four corners of the lower leg 3. Suppose that it contacts the part 3a (see (B)).

  As a result, the upper leg 4 is connected to the lower leg 3 standing on the Toro cart 1 without tilting, and the upper leg 4 moves relative to the lower leg 3, that is, the upper leg 4 moves up and down. It will be realized smoothly, and after lifting, it is possible to ensure the elevation of the work floor 2 connected to the upper end of the upper leg 4 and the horizontal state of the work floor 2.

  Incidentally, the grooved roller 6, that is, the grooved roller 6 on the upper side in FIG. 6 (A) is pivotally attached to a mounting bracket 61 having a U-shaped cross section as shown in FIG. 6 (B). The lower bracket 3 is provided on the lower leg 3 by being connected to the lower leg 3 of the connecting bracket 63 that holds the shaft 62.

  6A, the grooved roller 6 on the lower side is pivotally attached to the mounting bracket 61 having a U-shaped cross section, as described above, though not shown in detail. The shaft 62 is rotatably held, and is provided on the upper leg 4 by being connected to the upper leg 4 of the connecting bracket 63 that holds the shaft 62.

  In the connection structure formed as described above, for example, the lower end of the upper stage leg 4 is raised as the upper stage leg 4 is lifted during the extension operation in which the upper stage leg 4 comes out from the inside of the lower stage leg 3. However, in this case, the mounting brackets 61 that pivotally support the grooved roller 6 described above, that is, the mounting brackets 61 that are the upper and lower sides are in contact with each other. It is possible to avoid the situation where the grooved rollers 6 collide with each other, and the situation where the upper leg 4 comes out of the lower leg 3 can be avoided, and so-called safety in the moving scaffold can be ensured. .

  In this connection structure, the lower leg of the upper leg 4 becomes the lower end of the lower leg 3 as the upper leg 4 is lowered during the contraction operation in which the upper leg 4 is immersed inside the lower leg 3. Or the upper end of the upper leg 4 may collide with the upper end of the lower leg 3, but in this case, the grooved roller 6 is pivotally supported by the lower end of the upper leg 4. The mounting bracket 61 that pivotally supports the grooved roller 6 at the lower end of the lower leg 3 facing the bracket 61 or at the upper end of the upper leg 4 collides with the upper end of the lower leg 3. It is possible to avoid a situation in which the grooved roller 6 at the lower end of the upper leg 4 collides with the lower end of the lower leg 3 or the upper end of the upper leg 4 collides with the grooved roller 6 at the upper end of the lower leg 3. It is possible to avoid the occurrence of a situation of falling down from the lower leg 3.

  Incidentally, in the above-mentioned place, a so-called stopper mechanism at the time of raising and lowering between the upper leg 4 and the lower leg 3 is constituted by the mounting bracket 61 that pivotally supports the grooved roller 6. Although not shown, it is needless to say that a dedicated stopper mechanism may be provided between the upper leg 4 and the lower leg 3.

  Further, regarding the order of connection between the upper leg 4 and the lower leg 3 having the grooved roller 6, the upper stage is connected to the lower stage leg 3 which is detachably connected to the Toro cart 1 in advance from the rear. When connecting the legs 4, the grooved rollers 6 are not provided at the upper ends of the lower legs 3, and the lower ends of the upper legs 4 are inserted into the lower legs 3.

  At that time, a grooved roller 6 is provided at the lower end of the upper leg 4, and the grooved roller 6 is provided on the inner vertical edge 3 a corresponding to the lower leg 3 (see FIG. 6B). It is good to use it as a guide by abutting it. Then, it is assumed that the grooved roller 6 is provided at the upper end portion of the lower step leg 3 after the lower end side portion of the upper step leg 4 is inserted at a predetermined depth inside the lower step leg 3. As a result, the upper leg 4 is connected to the lower leg 3 so as to be movable up and down without being separated.

  When connecting the upper leg 4 to the lower leg 3, after inserting the lower end side of the upper leg 4 into the lower leg 3 without providing the grooved roller 6 at the lower end of the upper leg 4, Of course, the grooved roller 6 may be provided at the lower end of the upper leg 4, and the grooved roller 6 is not provided at the lower end of the upper leg 4, but the upper end of the lower leg 3 is provided with a groove. With the roller 6 provided, the lower leg side portion of the upper leg 4 may be inserted inside the lower leg 3, and the grooved roller 6 may be provided at the lower end portion of the upper leg 4 after the heel.

  On the other hand, in this moving scaffold, as described above, the lower pedestal 3 is detachably installed on the trolley 1, that is, connected to it, and acts on the upper pedestal 4 as described later. The floor 2 is separably connected, and further, in the middle leg 5, and the lower body 5b and the upper body 5c are separably coupled. An arbitrary connection structure may be selected.

  FIG. 7 shows an example of a connection structure of the lower body 5b and the upper body 5c in the middle leg 5, and in the illustrated case, the connection structure uses the connection plate 7 and the bolt nut 8. .

  Explaining a little, the vertical ground material 51 forming the lower body 5b in the middle leg 5 integrally has a horizontal plate material 71 forming the connecting plate 7 at the upper end, and forms the upper body 5c in the middle leg 5. The material 52 is integrally formed with a horizontal plate material 72 that forms the connecting plate 7 at the lower end.

  Each of the horizontal plate members 71 and 72 has bolt holes (not shown) that are provided at the four corners and aim at each other when stacked, and bolts 81 are inserted into the bolt holes, respectively. A nut 82 is screwed to 81 so that the horizontal plate members 71 and 72 can be integrally connected by tightening the nut 82, and the horizontal plate members 71 and 72 are integrated by so-called removal of the tightened nut 82. It is possible to cancel the connection.

  Therefore, in this connection structure, the horizontal plate members 71 and 72 having bolt holes at the four corners are only connected to the lower body 5b or the vertical ground members 51 and 52 forming the upper body 5c in the middle leg 5, respectively. Thus, existing bolts and nuts 8 can be used, so that it is possible to avoid an unnecessarily high product cost in the moving scaffold and to facilitate the work of connecting and separating the lower body 5b and the upper body 5c in the middle leg 5.

  FIG. 8 shows a modified example of the connecting structure of the lower body 5b and the upper body 5c in the middle leg 5, and in the illustrated case, the connecting structure has a socket structure, that is, the lower body 5b as one side is shown. The socket 9 is provided at the upper end of the vertical material 51 and the collar 10 is provided at the lower end of the vertical material 52 of the upper body 5c as the other.

  Explaining briefly, the vertical ground material 51 forming the lower body 5b in the middle leg 5 has a socket 9 that protrudes upward from the cylindrical body at the upper end, and forms the upper body 5c in the middle leg 5. The ground material 52 has a circular inner cross section at the lower end, protrudes downward, and integrally includes a collar 10 that allows insertion of the socket 9 on the inner side.

  In this connection structure, the socket 9 and the collar 10 are connected to the lower body 5b, that is, the upper body 5c is moved as shown by an arrow in the figure, that is, the socket 9 is not shown. Is inserted into the collar 10, a pin (not shown) penetrates from both sides in the lateral direction to prevent separation of them, that is, the socket 9 is prevented from coming out of the collar 10.

  FIG. 9 shows an example of the work floor 2, and in the illustrated case, the work floor 2 is connected to the upper end of the vertical ground material 41 in the upper leg 4 constituting the extendable leg S, A holder 42 provided in a fixed state on the upper end of the vertical ground material 41 supports the main girder 23 forming the work floor 2 so as to be separable from below. In FIG. 9, only the main body 2a (see FIGS. 1 to 4) on the work floor 2 is shown, and the auxiliary portion 2b provided on the main body 2a is not shown.

  Incidentally, in the work floor 2, a pair of main girders 23 are arranged in a longitudinal direction that is a direction crossing the rail R, and a floor where an operator can substantially enter above the pair of main girders 23. The floor portion is connected to a pair of horizontal members 23a made of square pipes and disposed in the short direction of the work floor 2, and a pair of horizontal members 23a made of round pipes in the short direction. A pair of horizontal members 23b in the longitudinal direction, and a plurality of floor plates 23c spanned between the pair of horizontal members 23b in the longitudinal direction.

  In the work floor 2, the transverse member 23a in the short direction is welded and fixedly connected to the main girder 23, and the transverse member 23b in the longitudinal direction is also welded and fixedly to the transverse member 23a. The floor plates 23c are connected to the horizontal member 23b so as to be detachable from the horizontal member 23b so as to be separated from the horizontal member 23b.

  However, when the work floor 2 is used, the floor plate 23c is connected to the horizontal member by appropriate connecting means so as not to be easily separated from the horizontal member 23b. Incidentally, although not shown, the horizontal member 23b made of a round pipe is inserted through the pipe material constituting the auxiliary portion 2b (see FIG. 2) in the work floor 2 so as to be able to appear and retract. Moreover, although not shown in figure, the main girder 23 is holding | maintaining the arm 21 (refer FIG. 2) so that it can protrude and retract in the both ends of the axial direction along the horizontal member 23b.

  Returning, the holder 42 is formed in the shape of a bowl having a vertical cross-sectional shape that is open at the upper end, and is fitted with a main girder 23 that forms the work floor 2 inside. The connection state of the holder 42 and the main girder 23 is maintained by screwing of the nut 44 to the bolt 43 that is a connecting shaft that penetrates the shaft 23 integrally.

  As a result, the work floor 2 cannot move in the direction in which the rail R is laid and the direction in which the rail R is laid at the upper end of the upper leg 4, that is, the work floor 2 is not displaced. In the holder 42, the nut 44 is removed from the bolt 43 and the bolt 43 is removed from the holder 42, so that the work floor 2 and the upper leg 4 are separated. Will get.

  As shown in the figure, the handrail 22 includes a socket 22a that is welded to stand up at the upper end of the horizontal member 23a, a handrail post 22b into which the lower end is inserted into the socket 22a from above, and a handrail post 22b that is not shown. It has a handrail (bar) that is connected to the upper end of the frame and extends in the horizontal direction so as to follow the horizontal member 23b below, and is detachably provided on the floor.

  Incidentally, in the illustrated case, the handrail 22 is provided on the floor portion of the work floor 2. However, as long as it functions as a so-called handrail, it is provided so as to be connected to, for example, the main girder 23. Also, the floor plate 23 spanned over the horizontal member 23b may be separable or integrally provided.

  In addition, the handrail 22 may be provided on the floor so as to be separable from the intent of the present invention. Alternatively, although not shown, the handrail 22 may be provided so as to be foldable on the floor. Further, it may be fixedly provided on the floor.

  In the moving scaffold formed as described above, it is introduced into the tunnel T of the subway as follows, but the moving scaffold before introduction into the tunnel T is in a so-called disassembled state, In the tunnel T, it is assembled in a state where it is placed on the rail R or a state where it is placed on the roadbed B, and it is moved to the destination by using the wheels 11 to realize introduction into the tunnel T.

  First, each component constituting the moving scaffold is manually carried into the station yard from the entrance / exit on the ground of the station closest to the destination in the tunnel T where the moving scaffold is introduced. The moving scaffolding is assembled by connecting the constituent members.

  When each component member is carried into the tunnel T, each component member, that is, the Toro cart 1, the work floor 2, and the telescopic legs S can be manually transported. Carrying into the station is easy.

  Among the structural members carried into the station, first, the Toro cart 1 is placed on the rail R or the roadbed B, and the lower leg 3 constituting the extendable leg S is erected on the Toro cart 1 so as to be separable. At this time, when the telescopic leg S has the middle leg 5, the lower leg 3 connects the lower body 5b of the middle leg 5 in advance so as to be able to be raised and lowered.

  Next, the upper leg 4 that similarly constitutes the telescopic leg S is detachably connected to the lower leg 3 standing on the Toro cart 1. At this time, when the telescopic leg S has the middle leg 5, the upper leg 3 is connected to the upper body 5c in the middle leg 5 so as to be movable up and down in advance, so that the upper body 5c is coupled to the lower leg 3. The lower body 5b is detachably connected.

  At the time when the connection of the telescopic leg S to the Toro cart 1 is completed, one end of the tow rope W1 is detachably connected to the upper leg 4, but one end of the tow rope W1 is manually attached to the Toro cart 1. It is pulled out from the winder P1.

  At this time, when the telescopic leg S is configured to have the middle leg 5, one end portion of the lower tow rope W <b> 2 that is one of the tow ropes is detachably connected to the lower body 5 b in the middle leg 5. One end of the upper tow rope W3 as a tow rope is detachably connected to the lower end of the upper body 5c in the middle leg 5. Incidentally, the respective one end portions of the lower tow rope W2 and the upper tow rope W3 are pulled out from the corresponding manual hoisting machines P2 and P3 equipped on the Toro cart 1.

  Further, the work floor 2 is detachably connected to the upper leg 4. At this time, the work floor 2 is positioned and connected to the upper leg 4 so as to cross the laying direction of the rail R, but in the illustrated case, a bowl-shaped holder provided at the upper end of the upper leg 4 Since the main girder 23 that forms the work floor 2 is fitted to 42 from above, there is no fear that the work floor 2 is connected to the upper end of the telescopic leg S in the wrong direction. Moreover, by this, it will be in the state by which the movement scaffold was mounted on the rail R, Therefore, the movement to the destination of the movement scaffold by human power is attained.

  When an operator enters the work floor 2 in the moving scaffold moved to the destination, the work floor 2 is positioned in advance at a predetermined height position. The towline W2 and the upper towline W3 are selected or used simultaneously.

  That is, in the case where the telescopic leg S has a two-stage configuration, when the tow rope W1 is towed using the manual hoisting machine P1, the upper leg 4 is raised and lowered relative to the lower leg 3, and the work floor 2 is raised and lowered. When the telescopic leg S has a three-stage configuration, the upper leg 4 rises with respect to the middle leg 5 when the upper pulling rope W3 is pulled using the other manual hoisting machine P3.

  On the other hand, when the telescopic leg S has a three-stage configuration, when the lower pulling rope W2 is pulled using one manual hoisting machine P2, the middle leg 5 rises with respect to the lower leg 3, and from this state, When the tow rope W3 is pulled, the upper leg 4 rises with respect to the middle leg 5.

  In view of the above, when the telescopic leg S has a two-stage configuration, the tow rope W1 may be pulled by the operation of the manual hoisting machine P1, and when the telescopic leg S has a three-stage configuration, the work floor 2 Depending on the height of positioning, one or both of the lower towline W2 and the upper towline W3 may be towed by the operation of the manual hoisting machines P2 and P3.

  After the work floor 2 is positioned at a predetermined height position, an operator may enter the work floor 2 and perform a desired work. When removing the work floor 2 after use, the reverse procedure is performed. Just follow.

  Therefore, in the mobile scaffold of the present invention, since the transportation of the Toro cart 1, the work floor 2, and the telescopic legs S as the constituent members is allowed, each constituent member is brought into the station premises through the subway entrance on the ground. In addition to being able to carry in, conversely, it becomes possible to transport from the station premises to the ground.

  And in the mobile scaffold of the present invention, it is assembled by connecting the components carried into the station premises as prescribed, and can be introduced into the subway tunnel, and the reverse procedure is performed. By stepping on it, it becomes possible to remove it from the tunnel T of the subway.

  In addition, in the assembly and disassembly of this moving scaffold, there is a drive mechanism that uses power for the moving scaffold to run the Toro cart 1 and a lifting mechanism that uses power for raising and lowering the work floor 2. Therefore, as compared with the case where each of these mechanisms is provided, only the work of connecting and separating the respective constituent members is sufficient, and assembly and disassembly can be performed quickly without requiring any labor.

  From the above, according to the mobile scaffold of the present invention, disassembly and assembly can be performed in a short time. Therefore, particularly when the mobile scaffold is used as a tunnel of a subway after the last train, this When the work in the tunnel is temporarily partial, such as repair of peeling on the wall surface, it can be introduced into the tunnel T in a short time and can be removed from the tunnel T in a short time. .

  The moving scaffold of the present invention is formed as described above, and further, the following considerations, that is, appropriate modifications may be made. As described above, the lower pedestal 3 is connected to the trolley 1 in a separable manner by using the base 14. The provided plate may be connected to the upper surface of the Toro cart 1 using bolts and nuts. At this time, for example, the nut may be welded to the Toro cart 1.

  Further, when the lower pedestal 3 is connected to the trolley 1, although not shown in the figure, the lower end of the lower pedestal 3 is detachably fitted to the frame provided at the upper end of the trolley 1. May be maintained, for example, by using a stopper pin that penetrates the lower end of the lower leg 3 and the frame on the toro cart 1.

  In the above description, the lower leg 3, the upper leg 4 and the middle leg 5 constituting the telescopic leg S are formed in a frame structure, but instead, between the legs 3, 4 and 5, respectively. Although not shown in the drawings, the legs 3, 4 and 5 may be formed in a cylindrical shape having a peripheral wall portion and open at the upper and lower ends as long as the ascending and descending connection is guaranteed. When formed, the cross-sectional shape may be not only rectangular but also circular or elliptical.

  When the telescopic leg S has a rectangular cross-sectional shape, when the middle leg 5 is provided between the lower leg 3 and the upper leg 4 or between the two legs, the telescopic leg S can freely move up and down. Thus, it is advantageous in that the rotation between each other can be prevented, that is, the horizontal rotation of the work floor 2 is prevented.

  On the other hand, when the expansion / contraction leg S has a circular cross-sectional shape, when the middle leg 5 is provided between the lower leg 3 and the upper leg 4 or between them, basically the rotation between the legs Since the movement is allowed, it is advantageous in that it is possible to cope with a case where the surface opposite to one end or the side surface of the work floor 2 is curved.

  In addition, as described above, the telescopic leg S is composed of a combination of the lower leg 3 and the upper leg 4 or a state in which the middle leg 5 is combined with the lower leg 3 and the upper leg 4, but instead. Although not shown, for example, it may be composed of a spiral lift. Of course, this spiral lift is expanded and contracted manually, but when the spiral lift is used for the extendable legs S, a moving scaffold is formed. It becomes possible to greatly reduce the total number of members, and it is possible to further facilitate transportation and assembly / disassembly.

  Further, in the above description, the holder 42 formed in the shape of a bowl is used for the connection between the work floor 2 and the upper leg 4, but instead of this, although not shown, a bolt and nut may be used.

  In this case, for example, the upper leg 4 has a bolt standing at the upper end, and the standing bolt penetrates the main girder 23 of the work floor 2 in the vertical direction, thereby restricting the penetration height of the main girder 23 of the bolt. The bolt may have a plurality of nuts. In this case, the bolt and nut can be provided with a level adjusting function while simplifying the connection structure between the upper leg 4 and the work floor 2.

  Furthermore, as described above, in the telescopic leg S, the middle leg 5 is connected to the lower leg 3 so as to be movable up and down, and the upper leg 4 is connected so as to be raised and lowered, so that the lower leg 3 and the upper leg 4 are connected. Therefore, when the upper leg 4 is raised with respect to the lower leg 3 and the upper leg 4 is raised, the upper leg 4 and the lower leg 3 The upper leg 4 or the lower leg 3 is approximately twice as long as the upper leg 4 or the lower leg 3, but the length of the lower body 5b and the upper body 5c in the middle leg 5 in the vertical direction is lower than the lower leg 3 and the upper leg. When the length is set shorter than the length of the leg 4 in the vertical direction, the separation length between the upper leg 4 and the lower leg 3 can be made smaller than about twice the above.

  In addition, as described above, with respect to the connection position of the lower towline W2 and the upper towline W3 that are involved in the expansion and contraction of the extendable leg S to each leg, one end portion of the lower towline W2 is in the middle leg 5. Although it is assumed that one end portion of the upper tow line W3 is connected to the lower end portion of the upper leg 4 instead of being connected to the lower end portion of the lower body 5b, instead of this, although not shown, One end portion may be connected to the vertical center portion of the lower body 5b in the middle leg 5 and one end portion of the upper pulling rope W3 may be connected to the vertical center portion in the upper leg 5 in this case. In other words, the corresponding legs can be lifted only by a so-called half at the maximum, and the lifting stroke of the work floor 2 can be kept small.

  Further, in the mobile scaffolding, the telescopic legs S have a three-stage configuration, the middle leg 5 is lowered with respect to the lower leg 3, and the upper leg 4 is lowered with respect to the middle leg 5. At some point, if the lower traction measure W2 is pulled while the other end side of the upper traction line W3 is maintained in a fixed state, the upper traction line W3 is also pulled together, and the upper leg 4 is moved downward. Accordingly, the middle leg 5 that is lifted by pulling the tow rope W2 moves together and rises synchronously.

  From this, it can be said that the other end portion of the upper tow rope W3 may be directly connected to the Toro cart 1, for example, although not shown, instead of being connected to the other manual hoisting machine P3. . In this case, since the equipment of the other manual hoisting machine P3 on the trolley 1 can be omitted, the weight of the trolley 1 can be reduced by omitting this equipment.

  In the above description, the case where the mobile scaffold is introduced and used in the subway tunnel T has been described as an example. However, from the point of view of the present invention, the mobile scaffold of the present invention is the subway tunnel. It does not preclude use in places other than T, for example, so-called open places where there are no restrictions in the horizontal direction or above, such as the ground.

  In the present invention, since the carriage is movable with the wheels 11, the operation involves a lateral movement, for example, an operation on a wall surface extending in a lateral direction in an outdoor building or structure. Further, since the work floor 2 can be raised and lowered by the expansion and contraction of the extendable legs S, it can be used for work on a wall extending vertically in a building or a structure in the same manner.

1 Toro cart 2 Work floor 2a Main body 2b Auxiliary 3 Lower leg 4 Upper leg 5 Middle leg 5b Lower body 5c Upper body 11 Wheel 12 Square pipe 21 Arm 21a Abutting part 22 Handrail B Roadbed P1 Manual hoisting machine P2 One manual hoisting machine P3 The other manual hoisting machine R Rail S Telescopic leg W1 Towing rope W2 Lower towing rope W3 Upper towing rope

Claims (10)

A carriage that has wheels that roll on a rail or a roadbed and that can move, and a work floor that moves up and down on the carriage to allow people to enter ,
The above cart can be moved manually,
The work floor is raised and lowered by human extension of the extendable legs provided between the cart and the cart,
A lower pedestal in which the telescopic legs are detachably installed on the carriage, and an upper pedestal that is detachably connected to the work floor and is inserted in the lower pedestal so as to be lifted and lowered.
In tunnel work mobile scaffolding the other end side has a towline being wound around the lower leg with one end connected to the upper leg,
The work floor is composed of a fixed main body part, an auxiliary part connected to the main body part so as to be movable in and out, and an arm connected to the auxiliary part so as to be able to advance and retreat,
A grooved roller that contacts the outer vertical edge of the upper leg is provided at the inner corner of the upper corner of the lower leg, and the outer corner of the lower corner of the upper leg contacts the inner corner of the lower leg. The carriage, the work floor, the lower pedestal and the upper pedestal are provided with a grooved roller in contact with each other, and can be manually conveyed,
A moving scaffold for working in a tunnel, characterized in that the upper pedestal can be lifted and lowered with respect to the lower pedestal by towing of the tow rope by human power. 2. The moving scaffold for working in a tunnel according to claim 1, wherein the tow rope is connected to a manual hoist provided at the other end of the tow rope. A carriage that has wheels that roll on a rail or a roadbed and that can move, and a work floor that moves up and down on the carriage to allow people to enter ,
The above cart can be moved manually,
The work floor is raised and lowered by human extension of the extendable legs provided between the cart and the cart,
A lower pedestal in which the telescopic legs are detachably installed on the carriage, an upper pedestal connected to the work floor in a separable manner, and a middle pedestal connected to the upper and lower pedestals so as to be movable up and down. A lower traction line having one end connected to the middle leg and the other end side hung to the lower leg, and one end connected to the upper leg and the other end hung to the middle leg. in tunnel work moving scaffold and an upper tow to be turned,
The work floor is composed of a fixed main body part, an auxiliary part connected to the main body part so as to be movable in and out, and an arm connected to the auxiliary part so as to be able to advance and retreat,
The middle leg is composed of a lower body and an upper body separably connected to the lower body, the lower body is connected to the lower leg so as to be movable up and down, and the upper body is connected to the upper leg so as to be raised and lowered. Let
The cart, the work floor, the lower pedestal, the upper pedestal and the middle pedestal allow manual conveyance, and the middle pedestal can be lifted with respect to the lower pedestal by traction by the manual power of the lower towing line, A moving scaffold for working in a tunnel, characterized in that the upper pedestal can be raised with respect to the middle pedestal by traction by human power of the upper traction measure. The lower tow rope is connected to one manual hoisting machine provided at the other end of the cart, and the upper tow rope is connected to the other manual hoisting machine provided at the other end of the cart. Or a tunnel for working in a tunnel according to claim 3 , which is detachably connected to the carriage . The said working floor is a moving scaffold for work in a tunnel of Claim 1, 2, 3 or 4 which has a handrail provided in the direction which crosses the said rail or a roadbed . The work floor has an opening in the floor portion, and has a hatch that allows opening and closing of the opening and allows a person to pass therethrough, according to claim 1, claim 2, claim 3, claim 4, or claim 5. Mobile scaffold for working in the tunnel described. The carriage has a square shape in plan view with two square pipes provided in a direction crossing the direction of laying the rail and the other two pipes provided in the direction of laying the rail and connected to the square pipe. The in- tunnel work according to claim 1, 2, 3, 4, 5, or 6, wherein the lower pedestal is detachably erected on the upper surface of the carriage . Moving scaffold. The carriage has an outrigger, and a guide pipe in which the outrigger protrudes and appears at both ends of the square pipe, a lifting shaft provided perpendicular to a tip portion of the guide pipe, and a caster provided at a lower end of the lifting shaft. The moving scaffold for work in a tunnel of Claim 7 provided . Claim 1, Claim 2, Claim 3, Claim 4, Claim 5, Claim 7, or 7 is provided with a ladder that is used to enter and exit the work floor inside the telescopic legs. The mobile scaffold for work in a tunnel according to claim 8. The first, second, third, fourth, fifth, sixth, seventh, eighth, eighth, or eighth claim , wherein the lower pedestal has a level adjustment mechanism between the lower pedestal and the cart. 9. A moving scaffold for work in a tunnel according to 9.

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