JP5357456B2 - Leading handrail - Google Patents

Description

  The present invention relates to a leading handrail, and more particularly to a leading handrail provided in a single pipe scaffold.

  Work sites such as construction and shipbuilding are often provided with scaffolds for work as temporary facilities, but the types of scaffolds can be broadly divided into frame scaffolds and single pipe scaffolds. A single-frame scaffolding is formed by connecting single tubes of arbitrary length vertically and horizontally.

  Therefore, in the case of a framework scaffold, the dimensions of component materials including building frames are unified, so it is suitable for formation of scaffolds at the construction work site. It is suitable for forming scaffolds at work sites such as shipbuilding.

  On the other hand, when providing a temporary facility, the safety of the worker to be used is taken into consideration, and therefore, in addition to using the lifeline by the worker for the purpose of preventing the worker from falling even if it is on the work platform. Thus, a handrail as a safety facility is provided on the scaffolding.

  And this handrail is preceded in the assembly work of the scaffold, that is, it is provided in a so-called framework that constitutes the upper scaffold in a state in which the scaffold plate is built in the lower scaffold and the safety of the operator's feet is secured. By providing the preceding handrail and providing the preceding handrail, the safety of the worker who completes the upper scaffolding is improved.

  At this time, for example, as disclosed in Patent Document 1, it is more advantageous to reduce the so-called temporary cost in the frame scaffolding when the leading handrail is the repositioning type than the stationary type. It becomes.

  The prior handrail disclosed in this document has a mounting device integrally at the foot of a pair of left and right struts constituting the handrail, and this mounting device is a frame formed in a gate shape that constitutes a frame scaffold. It is linked to the cross member, which is a component of the building frame, and is also linked to the column, which is also a component of the building frame.

Therefore, in the proposal of the disclosure of this document, when assembling the frame scaffold using the building frame formed in the gate shape as the frame body, the handrail is so-called in advance, that is, the upper stage with the handrail as the preceding handrail. It becomes possible to provide it in the framework which constitutes the scaffold.
Japanese Patent No. 3892710 (see claim 1, paragraph 0017 in the specification, FIGS. 1 to 6)

  However, the above-mentioned document disclosure proposal does not basically have a defect in that a handrail can be provided in advance of the upper scaffold when used, but it is a little when considering the actual use. It may be pointed out that there is a problem.

  That is, first, the prior handrails that have been proposed so far are formed so as to be suitable for use in a frame scaffold, and therefore are not formed so as to be diverted to a single-tube scaffold.

  However, from the meaning, it is sufficient to change the corresponding dimensions of each part constituting the attachment device integrally formed at the foot of the pair of left and right pillars constituting the handrail so as to encode a single pipe. It cannot be said that it cannot be diverted to a single tube scaffold.

  On the other hand, even if that is the case, the temporary materials that make up the temporary facilities are usually maintained and reused, and not only the building frames, single pipes and scaffolding plates that make up the scaffolding. The same applies to the handrail.

  From this, the building frame, the single pipe and the scaffolding board are formed in a so-called simple shape to facilitate care and improve the fit when stored. Since the mounting device is integrally provided at the foot of the pair of left and right struts, care for the handrail becomes troublesome, and even when stored, the mounting device is included, so that the storage becomes worse There is.

  And in the handrail disclosed in this document, since the mounting device is integrally provided at the foot of the pair of left and right support columns, the transportability and the handleability are easily deteriorated, and this is transported or assembled. If it is difficult to handle for workers such as scaffolding rods, and if it is stacked and transported in a poorly fit situation, the mounting device bends due to its own weight, etc., so-called assemblability It is feared that it will worsen.

  The present invention was created in view of the above-described circumstances, and the object of the present invention is to provide a handrail prior to assembling the scaffold, as well as its assembling and handling properties. Furthermore, it is to provide a leading handrail that is optimal for improving the versatility, making it possible to improve the versatility, making the permanent reuse as a temporary material easily possible.

  In order to achieve the above-described object, the structure of the preceding handrail according to the present invention basically consists of a vertical pipe that is a single pipe arranged vertically and a horizontal pipe that is a single pipe arranged horizontally. And a handrail formed by connecting a rail disposed in a lateral direction to a pair of left and right columns so as to be rotatable or separable. While making it possible to bend the foot of one of the left and right struts in the direction of the surface of the handrail, the left and right struts of the handrail are attached to the left and right mounting devices held by the horizontal pipe, respectively. In the preceding handrail that is detachably inserted and connected, the mounting device is integrally connected to the main body portion along the horizontal pipe and the end portion of the main body portion while the vertical pipe is present in the recess. Or above the horizontal pipe A hook portion for engaging and suspending the main body portion from the horizontal pipe; a holder portion for allowing the vertical pipe to be present in the concave portion while being integrally connected to the main body portion; A socket that is integrally connected to an end portion of the main body portion, and is inserted into and connected to the foot of the support column in the handrail so as to be separable, and the holder portion is a recess in the main body portion by using auxiliary means. It is assumed that the vertical pipe is prevented from slipping out from the radial direction.

  Therefore, according to the present invention, in the single pipe scaffold, the leading handrail provided on the frame constituting the upper stage scaffold is used as a single pipe as a constituent material of the scaffold frame by using the foot in the pair of left and right columns. Since the attachment device is separably inserted into and connected to the holding device, the attachment property of the preceding handrail is compared to the case where the attachment device is provided integrally with the feet of the left and right struts constituting the handrail in advance. Improve handling and storage.

  That is, in the handrail, since there is no unnecessary thing at the foot of the pair of left and right struts, the handrail is transported or assembled to the scaffolding framework. Easy and easy to handle.

  And since the handrail does not have an attachment device at the foot of the pair of left and right support columns, it is easy to care for the reuse of the handrail, and it does not have an attachment device even when stored. Therefore, it does not deteriorate the fit and improves the storage.

  On the other hand, in the attachment device, since the main body portion has the vertical pipe in the recess, the horizontal pipe is not displaced laterally with respect to the vertical pipe, and the main body portion is suspended from the horizontal pipe by the hook portion. Therefore, the mounting device is disposed in a fixed state at a predetermined position of the single-pipe scaffolding, and therefore, the insertion of the foot of the column in the handrail to the socket of the main body portion is connected. Enable.

  In addition, in the handrail, since a rail arranged in a lateral direction is connected to a pair of left and right support columns so as to be rotatable or separable, first, in the handrail, the foot of one support column is attached to the mounting device. Is extracted and separated from the socket at the upper side, and inserted into the corresponding socket in the mounting device held by the upper horizontal pipe, and then the foot of the other column is pulled out from the socket at the mounting device and separated to become the upper stage. By inserting and connecting to a corresponding socket in the mounting device held by the horizontal pipe, so-called refilling can be made possible.

  The present invention will be described below on the basis of the illustrated embodiment. The preceding handrail according to the present invention is embodied in a single tube scaffold that is assembled by connecting single tubes of any length vertically and horizontally with a dedicated connector. Suitable for conversion.

  That is, as described above, as a scaffold provided in a construction site such as a building or a shipbuilding, a frame scaffold formed by assembling a building frame formed into a gate shape that is a frame body with a uniform size, and an arbitrary length There is a single tube scaffold formed by connecting the single tube vertically and horizontally with an orthogonal clamp as a dedicated connector.

  The framework scaffolds are suitable for forming scaffolds at construction work sites because the dimensions of building materials such as building frames are standardized. Therefore, it is suitable for forming scaffolds at work sites such as shipbuilding.

  In addition to the above-described Patent Document 1, there is a proposal disclosed in, for example, Japanese Patent Application Laid-Open No. 2007-1000049 for the leading handrail used for the frame scaffold.

  However, there has never been a proposal for a leading handrail used for a single pipe scaffold, and the proposal has been desired. However, a single pipe scaffold is suitable for forming a free-form scaffold compared to a framework scaffold. Therefore, there is a background that makes it difficult to propose a so-called stylized leading handrail because there is no dimensional uniformity when forming a scaffold.

  However, it is also well known that when a scaffolding assembles a single-pipe scaffold, for example, when a scaffolding assembles a single-pipe scaffold, a predetermined single-pipe scaffold can be assembled without causing a significant dimensional error.

  Based on this, even in a single pipe scaffold formed by assembling single pipes vertically and horizontally using orthogonal clamps, it is fundamental to provide handrails that are uniform in size, i.e., standard leading handrails. Therefore, the present invention provides a new handrail suitable for use in a single tube scaffold.

  By the way, when the scaffolding assembles the single pipe scaffold, it may measure, but because of the skill of assembly work of the scaffold, the dimensional error between the vertical pipes is the outer diameter of the single pipe (48.6mm) Therefore, even if the handrail is formed in a fixed shape, it can be easily inserted and connected to the attachment device as described below.

  From the background described above, the leading handrail according to the present invention firstly connects a vertical pipe 1 as a single pipe vertically and a horizontal pipe 2 as a single pipe as shown in FIG. It is in the single pipe scaffolding connected and assembled with the orthogonal cross clamp 3 which has a handrail 10, and this handrail 10 is a pair of left and right as shown in FIGS. 2, 3 and 4A. Basically, the support rails 11 and 11 are connected to the crosspieces 12 arranged in the horizontal direction so as to be rotatable or separable (see a virtual diagram in FIG. 4 and FIG. 2).

  As shown in FIG. 1, the single tube scaffold is formed by combining a single tube of an arbitrary length vertically and horizontally by using an orthogonal clamp 3 as a dedicated connector. For example, the single tube scaffold is the back side in FIG. Only one surface adjacent to the structure side is rarely formed, and in many cases, it is a two-sided structure with one surface standing on the outside of the structure, which is the near side in FIG.

  And since the prior handrail proposed in the present invention, that is, the handrail 10 is to secure the safety of the worker on the scaffold, in the present invention, the single pipe scaffold as the scaffold has the above-mentioned two-surface structure. Is done.

  Further, in this single pipe scaffold, for example, 900 mm is formed so that a space between two surfaces can be made constant and a space allowing an operator to enter can be formed between the two surfaces. The two pipes, i.e., the front and rear horizontal pipes 2 and 2 at the same level in the horizontal direction are connected by an orthogonal clamp 3 as a dedicated connector.

  In many cases, this type of single-tube scaffold is set to 1800 mm between the vertical pipes 1 and 1 and the horizontal pipes 2 and 2 between the upper and lower sides, that is, between the vertical pipes 1 and 2. Although it is customary, the space between the vertical pipes 1 and 1 may be shorter than 1800 mm, for example, 900 mm due to the shape of the scaffolding.

  In addition, according to the constituent requirements of the single pipe scaffold, the distance between the vertical pipes 1 and 1 is not necessarily larger than 1800 mm, but in such a case, in many cases, the standard length is 1800 mm. Once divided, the vertical pipe 1 will be provided separately in the extra length.

  As described above, in the single pipe scaffold, since the interval between the vertical pipes 1 and 1 can be set freely, the handrail 10 described later is preferably formed so as to be able to cope with this.

  By the way, in framed scaffolds, adjacent frames are connected by braces to prevent the adjacent frames from falling down, but in single-tube scaffolds, although not shown, for each side mentioned above A long single pipe is arranged obliquely, and the single pipe and the vertical pipe 1 or the horizontal pipe 2 are connected to each other by a universal clamp as a dedicated connecting tool in the plane direction of the single pipe scaffolding. Stop the fall.

  By the way, as described above, the handrail 10 basically has a pair of left and right support columns 11 and 11 that are connected to a crosspiece 12 that is disposed in a lateral direction so as to be rotatable or separable. As described above, in the single pipe scaffold using the handrail 10, the distance between the vertical pipes 1 and 1 adjacent to each other in the horizontal direction is not always maintained at 1800 mm which is set in advance.

  Therefore, as described above, the handrail 10 may be formed in a non-stretchable type that does not change the distance between the left and right columns 11, 11, that is, a fixed shape. It is preferable to form a stretchable mold in which the interval can be adjusted. Specifically, the crosspiece 12 is preferably stretchable in the horizontal direction, that is, in the direction in which the horizontal pipe 2 is disposed.

  This is because, in the handrail 10, when changing the distance between the left and right columns 11, 11, when the beam 12 is separably connected to the column 11, the beam 12 itself has a different length. However, if it is assumed that the distance between the left and right support pillars 11 and 11 can be easily changed, it is common to make the part extendable instead of being exchangeable. Let's go.

  Further, in this handrail 10, the meaning that it can be expanded and contracted means that the foot of each column 11, 11 is linked to a predetermined mounting device 20 even if the distance between the columns 11, 11 changes in size (FIGS. 2 and 4). Therefore, from this point of view, the crosspiece 12 may be formed of a chain and can cope with a change between the columns 11 and 11, but the function of the handrail 10 is flexible. It would be nice to be able to expand and contract while being formed into a rod-like shape.

  In particular, in the handrail 10 according to the present invention, although not shown, the beam 12 is movably connected to the tip of a lifeline that connects the base end to the worker on the scaffold. From this point of view, the beam 12 can be used. It is preferably made of a non-flexible rod-like body rather than a flexible chain.

  An arbitrary structure can be selected for the manner in which the crosspiece 12 can be expanded and contracted. Although not shown in the drawing, for example, it is typically a so-called telescope type made of an inner and outer pipe body.

  Incidentally, the below-described middle rail 13 disclosed in FIG. 3 is composed of inner and outer pipe bodies 13a and 13b, and is formed into a so-called telescope type so that it can be expanded and contracted.

  By the way, in this handrail 10, the columns 11 and 11 are connected so as to be separably inserted into a mounting device 20 which will be described later, as will be described later (see FIGS. 2 and 4). At the time of connection, since the leading handrail of the present invention is a refill type, at least the upper ends of the columns 11 and 11 are pivotally connected by pivoting both ends of the crosspiece 12 (see FIG. 4) and a virtual diagram in FIG. 2).

  At this time, as described above, when the distance between the vertical pipes 1 and 1 on which the handrail 10 is disposed is set to a fixed size, the distance between the support pillars 11 and 11 in the handrail 10 may be set to a fixed size. Eventually, the crosspiece 12 may be made inextensible.

  Further, in this handrail 10, from the viewpoint of enabling reordering itself, the crosspiece 12 may be connected to the upper ends of the left and right support columns 11 and 11 in a separable manner. In addition, in view of connecting the crosspieces 12 to the upper ends of the columns 11, 11, it cannot be said that it is efficient, and it will not be a very preferable measure.

  When the crosspiece 12 is not separable from the support pillars 11 and 11 and is pivotally connected by pivoting or the like, the support pillars 11 and 11 and the crosspiece 12 are not separated. For example, even if the operator slides his hand during the work of changing the handrail 10, it is advantageous in that a problem that the so-called handrail 10 falls from the scaffolding is not caused.

  Note that, in many cases, both ends of the crosspiece 12 are pivotally connected to the upper ends of the columns 11, 11 so as to be pivotable. (See FIG. 5A).

  Incidentally, the fact that the end portion is formed into a tongue piece is the same as that attached to the middle rail 13 described later (see FIG. 5B).

  Next, in the handrail 10, as shown in FIG. 2, it is preferable to have an intermediate beam 13 below the beam 12 whose both ends are connected to the upper ends of the left and right columns 11, 11. Compared with the case where only the crosspiece 12 is provided, the mechanical strength of the handrail 10 is increased and the safety is improved.

  When the middle rail 13 is provided in the handrail 10, both ends of the middle rail 13 are pivotally connected to the support columns 11 and 11 so as to be rotatable. It is good to be able to expand and contract, and not only to be able to expand and contract or to be separable, it becomes impossible to practice the reordering of the handrail 10.

  By the way, when the middle rail 13 can be expanded and contracted, various structures can be proposed for its specific form, but basically, as shown in FIG. 3, it consists of inner and outer pipe bodies 13a and 13b, A so-called telescope type is preferable.

  Of course, although not shown in the drawings, the frame rail is a frame frame formed in a horizontally long ring shape between the columns 11 and 11 in the handrail 10, that is, a frame beam formed in a horizontally long ring shape so as to integrally include the beam 12 and the intermediate beam 13. In the case of having this, the frame rail may be extendable.

  In any of the handrails 10 described above, the crosspieces 12 or the crosspieces 12 including the intermediate crosspieces 13 are formed so as to be extendable and contracted so that the vertical pipes 1 and 1 are scaled. Of course, even if the vertical pipes 1 and 1 are not scaled, the handrail 10 can be used.

  On the other hand, in the present invention, the handrail 10 enables the foot of one of the left and right supports 11, 11 to be bent in the surface direction of the handrail 10 (see FIG. 2). , 11 are detachably inserted into the left and right mounting devices 20 held by the horizontal pipe 2 and connected.

  That is, first, in the handrail 10, one of the left and right struts 11, 11 enables the foot to be bent in the surface direction of the handrail 10, and when the handrail 10 is reordered, it will be described later. It can be easily linked to the mounting device 20 to be connected.

  For making the foot of one of the columns 11 bendable in the plane direction of the handrail 10, a free structure can be selected, but it can be preferably folded by a so-called one-touch operation, and it is restored to a rod shape, that is, a column shape. It should be possible.

As shown in FIG. 6, as shown in FIG. 6, there is an insertion 14 at the foot of one of the columns 11, and this insertion 14 is a column part 11 a of the column 11 as shown in FIG. 6B. As shown in FIGS. 6 (A), 6 (C), and 4 (A), the lower end of the column 11a is pivotally attached to the recess of the holder 14b at the upper end. The rod 14c, which is a fixing means for fixing the posture in a columnar shape when the column portion 11a is present on the holder 14b, is connected to the holder 14b.

  Therefore, as shown in FIG. 7 (A), when the collar 14c is rotated, the column portion 11a of the support column 11 comes out of the recess of the holder 14b, and as shown in FIG. 6 (A), The foot of the column 11 can be bent.

  As shown in FIG. 6 (B), the hook 14c is formed in a square U shape so that it is not separated from the holder 14b at the time of its rotation operation, etc. Is screwed.

Further, regarding the flange 14c, in view of the fact that the column portion 11a of the above-described column 11 is a fixing means that prevents the holder 11b from coming out of the concave portion, instead of this, as shown in FIG. In addition, an arbitrary shape such as a wedge 14d may be used.

  By the way, as described above, when one foot 11 is formed so that the foot can be bent, the other foot 11 can be formed in a column shape that cannot be bent (see FIG. 2). Of course, this does not interfere with the reordering of the handrail 10.

  And in each support | pillar 11 and 11 in the handrail 10, between the foot | leg and the socket 24 in the below-mentioned attachment apparatus 20 with which this foot | base is detachably inserted and connected, it is artificial of the foot | foot from this socket 24. A coupling means is provided for preventing separation other than by operation.

  As shown in FIGS. 3 and 4, the connecting means includes a spring body S that is formed in a reverse V-shape and forms the foot of the support 11, and a pin that the spring body S has. S1 and a socket 24 through which the pin S1 is inserted have a hole 24a.

  Therefore, in this connection means, the pin S1 with the tip protruding outside the socket 24 in the attachment device 20 is separated from the socket 24 by being pushed into the lower end portion of the column 11, and the foot is released from this state. When raised, separation of the two becomes possible.

  Then, when the insertion 14 is inserted into the socket 24, the pin S1 pressed against the upper end opening of the socket 24 overcomes the urging force of the spring body S and is immersed in the pillar portion 11a, and into the socket 24 of the insertion 14 Allows insertion of.

  Therefore, in the handrail 10 formed as described above, the foot of the pair of left and right support columns 11 and 11 is used as the scaffold structure when the handrail 10 is provided as a preceding handrail on the framework constituting the upper stage scaffold. When the attachment device is integrally provided in advance at the feet of the left and right columns 11, 11 constituting the handrail 10, since it is detachably inserted into and connected to the attachment device 20, which will be described later, held by a single tube as a constituent material of Compared to the above, the assembling property and handling property in the preceding 10 and the storage property are improved.

  That is, since the handrail 10 does not have any extra parts at the feet of the left and right support columns 11, 11, for example, an operator who transports the handrail 10 or assembles it to the scaffold structure, for example, a scaffolding rod , Easy to assemble and easy to handle.

  Since the handrail 10 does not have an attachment device at the foot of the left and right support columns 11, 11, it is easy to care for the reuse of the handrail 10, and the attachment device can be used even when stored. Since it does not have, it does not deteriorate the storage and improves the storage property.

  On the other hand, as shown in FIGS. 4 and 8, the attachment device 20 has a main body portion 21, a hook portion 22, a holder portion 23, and a socket 24, and is a single unit composed of a vertical pipe 1 and a horizontal pipe 2. It is held on a tube scaffold.

  The main body 21 is basically formed in a form along the horizontal pipe 2 while having a concave portion 21a for allowing the vertical pipe 1 to be present, and has a concave portion 21a at the center portion in the drawing.

  That is, in the mounting device 20 of the present invention, basically, it is only necessary to insert and link the feet of the left and right support columns 11 and 11 in the handrail 10 respectively. It is not necessary for the mounting device 20 to be configured to enable the insertion of the feet in the two support columns 11.

  In that sense, the mounting device 20 according to the present invention is basically sufficient if it is configured to enable the insertion of the foot of one strut 11.

  The hook portion 22 is basically integrally connected to the end portion of the main body portion 21 and engages the horizontal pipe 2 from above to suspend the main body portion 21 from the horizontal pipe 2. Are provided at both ends of the main body 21.

  The holder portion 23 is provided integrally with the main body portion 21 to allow the vertical pipe 1 existing in the concave portion 21a to be present. In the illustrated case, the concave portion 21a is formed in the central portion of the main body portion 21. Therefore, it is provided in the central part of the main body 21 due to this.

  And this holder part 23 prevents the vertical pipe 1 from coming out from the recessed part 21a in the main body part 21 in the radial direction by using the auxiliary means, and the auxiliary means, as shown in FIG. It consists of a wedge 25.

  The auxiliary means may be constituted by a bolt to be screwed or a pin having a retaining structure, although not shown, instead of the wedge 25 described above.

  The holder portion 23 is shown in the figure and is integrally connected to the lower end of the main body portion 21, but from the point of function of the holder portion 23, it is not shown, but instead, The holder portion 23 may be provided at an arbitrary position from the upper end to the lower end of the main body portion 21.

Basically, the socket 24 is integrally connected to the end of the main body 21 so that the foot of the column 11 in the handrail 10 is detachably inserted and connected . As shown in FIG. This is because the vertical pipe 1 is inserted into the holder portion 23 in the center of the main body 21 and the feet of the columns 11 and 11 in the handrail 10 provided on the left and right are connected so as to sandwich the vertical pipe 1. Provided on the left and right of the main body 21.

  In the mounting device 20 formed as described above, since the main body portion 21 causes the vertical pipe 1 to be present in the recess 21a, the main body portion 21 is not displaced in the lateral direction with respect to the vertical pipe 1. Is suspended from the horizontal pipe 2 by the hook portion 22, and therefore does not descend with respect to the horizontal pipe 2, and therefore the attachment device 20 is disposed in a fixed state at a predetermined position of the single pipe scaffold. The insertion of the foot of the support columns 11 and 11 in the handrail 10 to the socket 24 of the portion 21 is enabled.

  In the handrail 10, the rails 12 arranged in the lateral direction are connected to the left and right support columns 11, 11 so as to be rotatable or separable. The foot is pulled out from the socket 24 in the mounting device 20 and separated and inserted into the corresponding socket 24 in the mounting device 20 held by the upper horizontal pipe 2, and then the foot in the other column 11 is connected to the mounting device 20. So that the so-called refilling can be performed by inserting and connecting to the corresponding socket 24 in the above-described mounting device 20 held by the upper horizontal pipe 2.

  As described above, according to the present invention, when the handrail 10 is provided as a preceding handrail on the framework of the upper stage scaffolding, the handrail 10 does not have an attachment device integrally. And, for example, it is easy to assemble and handle for an operator such as a scaffolding rod, and it is easy to care for the reuse of the handrail 10 and store it. Even in this case, since the mounting device is not provided, the storage property is improved without deteriorating the storage.

  As described above, the handrail 10 has the crosspiece 12, and the lifeline connected to the safety belt provided by the operator to the crosspiece 12 can be linked. At this time, the tip of the lifeline slides on the crosspiece 12. It is good to connect with the connecting tool intervened possible.

  And when this connecting tool can be slidably moved between the crosspieces 12 in the handrails 10 adjacent to each other, the range of action of the operator in the scaffold is widened. If the vertical pipe 1 and the left and right columns 11 of the handrail 10 are aligned in a straight line, it may not be possible to embody the sliding movement of the above-mentioned connecting tool. Care must be taken not to line up the lines.

It is a schematic perspective view which shows the single pipe | tube scaffold which actualized the leading handrail by this invention. It is a front view which shows the rearrangement operation | movement of the leading handrail by this invention. It is a front view of a handrail. (A) is a perspective view which shows a handrail and an attachment apparatus, (B) is a fragmentary perspective view which shows other embodiment of a fixing means . (A) is a partial front view which shows the edge part of the crosspiece in a handrail, (B) is a partial front view which shows the both ends of the middle crosspiece in a handrail. (A) is a partial front view which shows the step formed so that the support | pillar can be folded, (B) is a partial side view, (C) is a top view of a holder. The attachment device is shown, (A) is a plan view, (B) is a front view, and (C) is a partial longitudinal cross-sectional view of a vertical strut showing an enlarged bottom view locking mechanism. It is a perspective view which shows the holding | maintenance state to the single pipe | tube scaffold of an attachment apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vertical pipe 2 Horizontal pipe 3 Orthogonal clamp which is exclusive connection tool 4 Connecting pipe 10 Handrail 11 Post 11a Post 12 Cross 13 Middle rail 14 Insertion which constitutes the foot of the post 14c As a fixing means 14d As a fixing means 14d As a fixing means 20 Installation Device 21 Body 21a Recess 22 Hook 23 Holder 24 Socket 24a Hole constituting connecting means 25 Wedge as auxiliary means S Spring body constituting connecting means S1 Pin constituting connecting means

Claims (9)

  In a single-tube scaffolding that is assembled by connecting a vertical pipe that is a single pipe vertically and a horizontal pipe that is a single pipe that is horizontally installed with a dedicated connector, it is laterally placed on a pair of left and right columns. The handrail has a handrail that is pivotally or separably connected to the rail, and the handrail can bend the foot of one of the left and right struts in the surface direction of the handrail. On the other hand, in the preceding handrail in which the foot of the left and right struts of the handrail is detachably inserted into the left and right mounting devices held by the horizontal pipe, the mounting device is inserted into the recess. A main body portion along the horizontal pipe while the vertical pipe is present and an end portion of the main body portion are integrally connected to the horizontal pipe from above to engage the main body portion with the horizontal pipe. Hook part to be suspended and the main body A holder part for allowing the vertical pipe to be present in the recess while being integrally provided, and an end part of the main body part to be provided integrally with the holder so as to be separable. A leading handrail, wherein the holder portion prevents the vertical pipe from coming out from the concave portion in the main body portion in the radial direction by using auxiliary means.   The preceding handrail according to claim 1, wherein in the handrail, the both ends of the crosspiece are connected to the upper ends of the left and right support columns and are not stretchable or extendable.   In the handrail, both ends of the crosspiece are connected to the upper ends of the left and right struts, and an intermediate crosspiece is provided below the crosspiece. The preceding handrail according to claim 1, wherein the handrail is connected so as to be rotatable.   The preceding handrail according to claim 1, wherein in the handrail, the crosspiece is movably connected to a tip of a lifeline that connects a base end to an operator on a scaffold. In the above-mentioned handrail in which the foot can be bent in the surface direction of the handrail, the post is pivotally attached to the lower end of the post and the post connecting the cross to the upper end. The preceding section according to claim 1, further comprising an insertion portion that forms a step that can be bent, and the insertion portion and the column portion cannot be bent into a column shape by a fixing means. handrail.   A connecting means for preventing separation other than by manual operation of the foot from the socket between the foot of the column in the handrail and the socket in the mounting device in which the foot is detachably inserted and connected. The preceding handrail according to claim 1 provided.   The said attachment apparatus WHEREIN: While the said main-body part has said hook part and said socket in both ends, it has said recessed part which makes said vertical pipe reside in the center part. Leading handrail.   The preceding handrail according to claim 1, wherein in the attachment device, the holder portion is provided at an arbitrary position from the upper end to the lower end of the main body portion.   The preceding handrail according to claim 1, wherein in the attachment device, the auxiliary means comprises a wedge that is separably press-fitted into the holder portion, a bolt that is screwed, or a pin having a retaining structure.

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