JP5417057B2 - Safety fence and installation method - Google Patents

Description

  The present invention relates to a safety fence that can be attached to and detached from an existing fence provided in a production line such as a factory, and a method for attaching the fence.

2. Description of the Related Art Conventionally, as a technique for attaching a temporary enclosure member to a horizontal frame member, a form using a metal fitting for attaching a temporary enclosure plate installed at a construction site or a material storage area to a pipe extending in a horizontal direction is known.
For example, a vertical frame in a fence barricade arranged so that the vertical frames of each other face each other are hooked and fixed to a hook portion of the mounting bracket, and the horizontal pipe is held by the grip portion of the mounting bracket, A temporary enclosure device that is fixed by an attached pressing means is known (for example, see Patent Document 1).

  In addition, using a net mounting connector having a pair of net locking portions opposite to each other at the distal end and a groove on the base end side and having a pressing bolt, the net mounting connector is The net locking part is passed through the mesh from the inside of the enclosure part by using the mesh of the safety net that is fitted to the transverse beam from the inside of the enclosure part and is arranged on the outside of the enclosure part. After making the part face the wire of the net, each net locking part is engaged with the wire from opposite directions, and the bolt is advanced to abut against the transverse beam and pulling force on each net locking part It is also known that each tip locking portion is strongly engaged with the wire by the elastic repulsive force of the net mounting connector (for example, Japanese Patent Laid-Open No. 06-92407).

In addition, a pair of locking claws are opposed to each other by attaching a rotating arm having a locking claw at the tip to the tip of each leg of the U-shaped main body so as to face each other. A form is also known in which a temporary enclosure mounting bracket having a fastening bolt as a pressing means is used on the proximal end side of the character-shaped main body (see, for example, Patent Document 3).
In this embodiment, the distance between the portions where the pair of locking claws hold the locking portion provided on the side surface of the adjacent temporary enclosure plate is larger than the distance between the rotation centers of the pair of rotating arm portions. For this reason, when the pipe is pressed with the tightening bolt, the pair of locking claws generate a rotational moment toward each other, and both side surfaces of the adjacent temporary enclosure plates are pressed against each other.

JP 2004-324282 A Japanese Patent Laid-Open No. 06-92407 Japanese Patent No. 4084701 Utility Model Registration No. 25877742

  Fences provided in production lines such as factories are installed for safety to prevent intrusion of people, but because the vertical distance between the handrail and the horizontal rail below it is large, Since it was insufficient to prevent unsafe behavior such as going through a gap or putting a hand through the gap in the fence, it is desired to further improve safety.

  Using safety fences and mounting brackets used in material storage, etc., add these to existing fences installed in production lines such as factories, and attach them as fences for safety measures, further increasing the safety of existing fences. In the case of increasing the height, the installation (removal) of the fence for safety measures to be additionally installed must be performed from both sides of the fence for safety measures and the opposite side across the existing fence, Work space was required on both sides of the existing fence. In addition, the mounting bracket can be attached only to the cross member of the existing fence, and cannot be attached to the vertical member of the existing fence. In addition, the conventional mounting bracket is an independent member for connecting the safety fence and the existing fence. When the safety fence is attached to or removed from the existing fence, the safety fence is held. However, the metal fitting must be held at an appropriate position and the bolt must be screwed together, and the work of attaching and detaching the fence for safety measures is complicated.

  Therefore, it can be attached to a fence that has already been installed, and during maintenance of a production line such as a factory, it is possible to remove the fence for added safety measures. A fence for safety measures that prevents limbs from entering through the gap is desired.

Also, when installing equipment on a production line such as a factory, the production line is stopped, but when a safety fence is attached to or removed from an existing fence, the existing fence is sandwiched without entering the production line side of the factory. If the installation work of the safety fence can be performed from the passage side opposite to the production line, that is, the safety fence installation side, there is no need to place an operator on the opposite side of the existing fence (production line side). If a safety fence can be installed from (one side), installation work becomes easy.
In addition, a fence is desired in which a safety fence can be installed from the passage side (one side) with respect to pillars and beams such as existing fences and automatic warehouses.
An object of the present invention is to provide a safety fence that can advantageously solve the above-described problems and can perform installation work from one side of the fence installation side and a method for attaching the safety fence.

In order to advantageously solve the above-described problem, in the removable safety fence according to the first aspect of the present invention, the main body side of the gripping metal having a bolt is disposed on the back side of the support frame member, and the fence panel is disposed on the front side of the support frame member. Is attached to the support frame member, the gripping fittings are provided with engaging arms facing each other, and the bolt is inserted into the support frame member and is arranged on the front side of the support frame member The bolt is arranged to be operable by moving it in the front- rear direction from the front side of the fence panel .
In the removable safety fence according to the second aspect of the invention, the main body side of the holding metal fitting having a bolt is disposed on the back side of the support frame member, and the fence panel is disposed on the front side of the support frame member and attached to the support frame member. The gripping hardware includes engaging arms facing each other,
The bolt is inserted into a support frame member and screwed into a female screw member arranged on the front side of the support frame member, and the bolt is arranged to be operable by moving in the front- rear direction from the front side of the fence panel. ,
By rotating the bolt, the opposing engagement arms can be opened or closed.
In the third invention, in the detachable safety fence of the first invention, the main body side of the grip metal fitting having the bolt is arranged on the back side of the support frame member, and screwed into the female screw member arranged on the front side of the support frame member. The grip metal fitting is attached to the support frame by the bolt inserted into the support frame material and screwed into the female thread portion of the grip metal fitting, and the grip metal fitting rotates around the bolt axis with respect to the support frame material. A fence panel is disposed on the front side of the support frame member and attached to the support frame member.
According to a fourth aspect of the present invention, in the removable safety fence of the second aspect of the invention, the main body side of the grip metal fitting having the bolt is disposed on the back side of the support frame member, and screwed into the female screw member disposed on the front side of the support frame member The grip metal fitting is attached to the support frame by the bolt inserted into the support frame material and screwed into the female thread portion of the grip metal fitting, and the grip metal fitting rotates around the bolt axis with respect to the support frame material. A fence panel is disposed on the front side of the support frame member and attached to the support frame member.
According to a fifth aspect of the present invention, in the removable safety fence according to the first or third aspect of the present invention, the gripping metal is configured such that the engaging arms facing each other can be expanded by elastically deforming the side plate of the main body. It is characterized by being.
In the sixth invention, in the removable safety fence according to any one of the first, third, and fifth inventions, the gripping fitting includes a side plate portion, and the side plate portion of the gripping fixture is attached to the bolt shaft portion moved forward. The contact arms that are opposed to each other and that are connected to the side plate portion are made unexpandable by contact.
In a seventh invention, in the removable safety fence according to any one of the first to sixth inventions, a plurality of the support frame members are arranged in parallel at intervals.
In the eighth invention, in the removable safety fence according to any one of the first to seventh inventions, the support frame member is integrally bent and connected to the bottom plate on the back side and both sides of the bottom plate so as to be separated from each other. A cross-sectional hat-shaped support frame member provided with a pair of webs that are inclined to each other, and a front-side flange that is integrally bent and connected to each of the webs and that is provided so as to be separated from each other, A female screw member to be screwed into the bolt is disposed in the groove between the pair of webs.
In the ninth invention, in the removable safety fence of any one of the first invention to the eighth invention, the fence panel is a mesh fence panel, a lattice fence panel, a fence panel made of a wire mesh, a fence panel made of a plate-like panel, It consists of any 1 type of the fence panel which consists of a mountain-shaped or a corrugated panel.
In the tenth invention, in the attaching method of the removable safety fence of the first invention to the ninth invention, the removable safety fence of any one of the first invention to the ninth invention is attached to an existing fence, The engaging arms facing each other of the safety fence are positioned on the existing fence side, and the safety fence is arranged so that the fence panel of the safety fence is positioned on the passage side, and the safety fence is lifted from the passage side and gripped. The engaging arms facing each other in the metal fitting are attached to an existing fence.

According to the safety fence of the first invention, the main body side of the grip metal fitting having a bolt is arranged on the back side of the support frame member, the fence panel is arranged on the front side of the support frame member, and is attached to the support frame member. The bracket includes engaging arms facing each other, the bolt is inserted into a support frame member and screwed into a female screw member disposed on the front side of the support frame member, and the bolt is on the front side of the fence panel . because it is operably positioned by moving in the longitudinal direction from, when mounting or removing the safety fence to the existing fence, without entering the production line side of the factory or the like, aisle adjacent to the production line, i.e., Since the safety fence can be installed from the safety fence installation side, there is no need to place an operator on the opposite side of the existing fence.
In addition, the operation of the bolt is arranged so that it can be operated from the front side of the safety fence, and since it is on the same side as the safety fence installation side, operations such as rotation or non-rotation of the bolt can be easily performed. The effect is obtained.
In addition, the safety fence of the present invention can be installed or removed if there is an installation space and work space on either the outside (front side) or the inside (rear side) of the existing fence. It is.
For example, when repairing a production line such as a factory, the production line is stopped and repairs are performed. In this case, if it is desired that the repairer easily enter and exit the production line, the safety fence of the present invention is used. If it is easier to get in and out by removing the existing fence, it will be removed as appropriate. Also, when repairing, if it is desired to replace the line processing machine or make it easier to put in and take out the repair machine, if the safety fence of the present invention is higher than the existing fence, the height will be jammed. As appropriate, the safety fence of the present invention is removed.
According to the safety fence of the second invention, in addition to the configuration of the first invention, the opposing engagement arms can be opened or closed by rotating the bolts. The joint arm can be opened or closed by rotating the bolt, and the effect of being able to easily perform the opening or closing of the opposing engagement arm in the gripping bracket by rotating the bolt is obtained. .
According to the safety fence of the third invention or the fourth invention, in the detachable safety fence of the first invention, the main body side of the grip metal fitting having the bolt is arranged on the back side of the support frame material, and the front side of the support frame material The gripping metal fitting is attached to the support frame material by the bolts screwed into the female screw member arranged at the same time and inserted into the support frame material, and screwed into the female screw portion of the gripping metal fitting, and the gripping metal fitting is supported by the support frame material. Since the fence panel is arranged on the front side of the support frame member and attached to the support frame member so as to be rotatable around the bolt axis, when attaching or removing the safety fence to the existing fence, Installation of safety fences can be performed from the side of the passage adjacent to the production line, that is, the side where the safety fence is installed, without entering the production line side of a factory or the like. , There is no need to place a worker to the opposite side of the existing fence.
In addition, the safety fence of the present invention can be installed or removed if there is an installation space and work space on either the outside (front side) or the inside (rear side) of the existing fence. It is.
Attach the female threaded part on the gripping metal side and the female threaded member on the support frame material side to the bolt that fixes the gripping metal fitting, and the gripping metal fitting is fixed to the support frame material by crimping. In the loosened state, the gripping bracket can be held in a state where the gripping bracket is rotated by the required angle with respect to the support frame member by rotating the gripping bracket by the required angle and screwing the female screw member. It can be attached so that it can also be gripped horizontally, and it can be attached regardless of whether the existing fence is a horizontal beam type or a vertical lattice type.
Since the gripping bracket is attached to the support frame material in the safety fence from the beginning, it is not necessary to hold only the gripping bracket when attaching / detaching to the existing fence, and the gripping bracket is fixed to the existing fence (handrail or horizontal beam, etc.) It is possible to hold the safety fence at a position where it can be fitted to the member or the column portion) and fit the engagement arm, and there is no need to hold the gripping metal.
According to the fifth aspect of the present invention, since the gripping metal is configured such that the engaging arms facing each other can be expanded by elastically deforming the side plate portion of the main body, the opposing engaging arms are arranged on the side of the existing fence. By pressing against the beam, etc., the side plate part of the main body part is elastically deformed, so that the opposing engagement arm is expanded and fitted to the beam, etc. on the existing fence side, and can be elastically gripped. The effect that it can do is acquired.
According to a sixth aspect of the present invention, the gripping metal fitting includes a side plate portion, and the side plate portion of the gripping metal fitting is brought into contact with the bolt shaft portion that has been moved forward so that the engaging arms that face each other are connected to the side plate portion. Since the side plate portions are elastically deformed in the opening direction of the engaging arms facing each other simply by moving the bolts forward, the bolts are brought into contact with the bolt shaft portions. It is possible to prevent the engagement arm from expanding and prevent the safety fence from being easily detached from the existing fence by human power. Further, there is an effect that the engagement arm can be fixed by moving the bolt forward.
According to the seventh invention, since a plurality of support frame members are arranged in parallel at intervals, a safety panel having a plurality of support frame members in parallel at intervals has the same effect as described above. The effect that the safety panel can be securely attached to the existing fence is obtained by the plurality of grips provided on the support frame member.
Moreover, an effect that an operator can hold each support frame member, convey a safety panel, and install it on an existing fence can be obtained.
Further, according to the eighth invention, the support frame member is integrally bent and connected to the bottom plate on the back side and both side portions of the bottom plate, and each of the webs is provided so as to be inclined to be separated from each other. A cross-sectional hat-shaped support frame member that is integrally bent and connected to each other and is provided so as to be separated from each other, and a female screw that is screwed into the bolt into a groove between the pair of webs Since the member is arranged, the fence panel can be supported in a stable state by the flange of the support frame member, and the female screw member or the bolt can be arranged in the groove between the webs. It is possible to obtain such an effect that it can be prevented from projecting to the front side of the safety panel.
According to the ninth invention, the fence panel is composed of any one of a mesh fence panel, a lattice fence panel, a fence panel made of a wire mesh, a fence panel made of a plate-like panel, and a fence panel made of a mountain shape or a corrugated panel. Since a commercially available inexpensive panel can be used, an effect such as an inexpensive safety panel can be obtained.

  According to a tenth aspect of the present invention, there is provided a method for attaching the removable safety fence according to any of the first to ninth aspects to an existing fence, wherein the opposing engagement arms of the safety fence are positioned on the existing fence side. At the same time, the safety fence is arranged so that the fence panel of the safety fence is located on the passage side, the safety fence is lifted from the passage side, etc., and the engaging arms facing each other in the gripping metal are attached to the existing fence. The safety fence can be easily attached and constructed from one side of the existing fence, and the construction is easy. In addition, since it is not necessary to place an operator on the production line side of a factory or the like to perform installation work, it is possible to improve the safety of installation work.

1 is a partially longitudinal front view showing a removable safety fence according to a first embodiment of the present invention. It is a front view of FIG. It is a front view which expands and shows the support frame material vicinity in FIG. It is a vertical side view which shows the attachment relationship of an up-and-down grip metal fitting and a support frame material. (A) is a cross-sectional plan view near the upper gripping bracket, and (b) is a cross-sectional plan view near the lower gripping bracket. The attachment structure of the fence panel with respect to a support frame material is shown, Comprising: (a) is a cross-sectional top view, (b) is a vertical side view. It is a vertical side view which shows the state just before attaching the removable safety fence of 1st Embodiment of this invention to a handrail. It is a partial schematic longitudinal front view which shows the state which installed the removable safety fence of 1st Embodiment of this invention in the handrail. It is a schematic front view which shows the state which installed the removable safety fence of 1st Embodiment of this invention in the handrail. It is a front view which expands and shows a part of FIG. A partially longitudinal side view showing the state immediately before the hexagon socket head bolt is advanced to hold the handrail with the upper and lower grip brackets and prevent each arm of the gripper bracket from opening using the hexagon socket head bolt as a stopper. FIG. (A) is a cross-sectional plan view near the upper gripping bracket in FIG. 11, and (b) is a cross-sectional plan view near the lower gripping bracket in FIG. It is a front view which shows a handrail frame. It is a partially longitudinal side view in which the gripping metal is rotated with respect to the support frame member so that the gripping metal can be engaged with a vertical handrail or an inclined handrail. It is a partially longitudinal front view which shows the removable safety fence of the other form of this invention. It is a partially schematic longitudinal front view which shows the state which installed the detachable safety fence of the other form of this invention in the handrail. FIG. 17 is a partially cutaway schematic side view shown in FIG. 16. It is a front view which expands and shows a part of FIG. The attachment structure of the fence panel with respect to a support frame material is shown, Comprising: (a) is a cross-sectional top view, (b) is a vertical side view. It is a vertical side view which shows the attachment relationship of the up-and-down grip metal fitting and support frame material in the removable safety fence of other embodiment of this invention. FIG. 21 is a cross-sectional plan view of the vicinity of the upper gripping fitting in FIG. It is a partially vertical side view which shows the state which installed the removable safety fence shown in FIG. 20 in the handrail. FIG. 23 is a cross-sectional plan view of the vicinity of the upper gripping fitting in FIG. In the case of the gripping metal fitting shown in FIG. 20, the hexagon socket head bolt is advanced to the back side of the support frame member to open the space between the fixed-side engagement arm and the movable-side engagement arm. FIG. 6 is a transverse plan view showing a state immediately before the safety fence is lowered, the movable engagement arm is fitted to the transverse beam, and the gripping fitting is set on the transverse beam. From the state shown in FIG. 24, the hexagon socket head cap screw is reversely rotated so as to retract to the front side of the support frame member, and the space between the fixed side engaging arm and the movable side engaging arm is narrowed and closed. After gripping the transverse beam and setting the safety fence to the transverse beam, rotate the female screw member to advance with respect to the hexagon socket head bolt, and support frame toward the movable engagement arm fixed to the transverse beam It is a cross-sectional top view which shows the state which is going to advance a material. It is a disassembled perspective view which shows the movable side engagement arm and the fixed side engagement arm vicinity in the state which removed the support member of the front-end | tip part of a hexagon socket head bolt.

    Next, the present invention will be described in detail based on the illustrated embodiment.

  FIGS. 1-6 shows the safety fence 1 of one Embodiment of this invention, Comprising: The safety fence 1 of this invention is the support frame material 2, the holding | grip metal fitting 3 provided in the back side, and a support frame. A fence panel 4 arranged on the front side of the material 2, a hexagon socket head cap screw 5 for attaching the gripping metal fitting 3 to the support frame material 2, a female screw portion 6 provided on the gripping metal fitting 3 side, and a support frame material 2 Female screw member 7 provided on the front side of the frame and an attachment fitting 8 for attaching the fence panel 4 to the support frame member 2. The hexagon socket head cap bolt 5 includes a rotating tool engaging portion 5a such as a hexagon socket on the base end side on the fence panel 4 side which is the front surface side.

  As shown in FIG. 4, the grip 3 is disposed on the back side of the bottom plate 9 in the support frame member 2, and is screwed into the female screw member 7 disposed on the front side of the bottom plate 9 of the support frame member 2. The holding metal fitting 3 is attached to the support frame member 2 by a hexagon socket head bolt 5 that is inserted into a horizontal through hole provided in the bottom plate 9 and screwed into the female screw portion 6 provided in the holding metal fitting 3. It has been.

In the illustrated form, the steel support frame member 2 is integrally bent and connected to the bottom plate 9 located on the side of the gripping metal fitting 3 and both side portions of the bottom plate 9, and is provided to be inclined so as to be separated from each other. On the opposite side of the pair of webs 10 and the grooves 11 between the webs 10, the web 10 is integrally bent and connected to each other, and is parallel to the bottom plate 9 outwardly opposite the grooves 11 so as to be separated from each other. It is made into the hat shape of a section provided with each flange 12 and 12 of the front side provided in.
The bottom plate 9 in each support frame member 2 is provided with a lateral through hole for inserting a hexagon socket head bolt 5 for attaching the gripping metal fitting 3 at an interval in the longitudinal direction. A plurality (two in the illustrated case) are provided. The through hole is provided at a level corresponding to the horizontal beam (handrail) of the existing fence or the inclined horizontal beam (handrail) on the staircase, etc. ), Or a level corresponding to an inclined horizontal beam (handrail) on a staircase or the like.
In this case, in the case of an inclined lateral beam (handrail or the like), in order to make the gripping metal 3 side correspond to this, it is only necessary to fix the gripping metal 3 side again while rotating the gripping metal 3 side by a predetermined angle. The panel 4 can be installed without having to rotate.

Further, a plurality of through-holes for inserting the shaft portion of the headed bolt 13 for attaching the fence panel 4 disposed on the front surface side of the support frame member 2 are spaced apart from the bottom plate 9 in the support frame member 2 ( In the case of illustration, three) are provided.
A female screw member 7 made of a nut is arranged on the groove side between a pair of webs 10, 10 integrated on both sides of the bottom plate 9, and is screwed into the female screw member 7. The male screw shaft portion of the hexagon socket head bolt 5 inserted through the through hole is screwed into the female screw portion 6 of the gripping fitting 3.

The gripping metal 3 includes a gripping metal body 14 formed by appropriately cutting and bending a metal plate, and a hexagon socket head cap screw 5 screwed into the gripping metal body 14. The gripping metal body 14 is formed by welding or cutting a pair of nuts (female screw portions) 6 to which the hexagon socket head bolts 5 are screwed and arranged concentrically in through holes provided in the bottom plate portion 15. The bottom plate portion 15 fixed by the gripping pieces 16 and the upper and lower ends (see FIG. 4) of the bottom plate portion 15 rise and bend in the middle to form a gap 17 substantially equal to the outer diameter of the bolt 5. A pair of side plate portions 18 that are substantially parallel to each other, and the upper and lower side plate portions 18 that are bent at right angles from the front and back in the depth direction (left and right direction in FIG. 4) to the opposite sides that are opposed to each other in the vertical direction. Are provided with a pair of front and rear engaging arms 20 having engaging recesses 19 at the inner edges of the crossed upper portions. In addition, a guide portion 21 connected to the engagement recess 19 is provided at the distal end portion of each engagement arm 20. The portion of the side plate portion 18 connected to the bottom plate portion 15 is formed with the gripping piece 16 so that the rigidity is weakened, and the portion of the side plate portion 18 is elastic when the engagement arm 20 tries to expand. When engaging with an object such as the transverse beam 22 held by the engaging arm 20 that is deformable, the object such as the transverse beam 22 is held while the engaging arms 20 facing each other can be expanded. To come. The shape of the engaging recess 19 is set so as to match the cross-sectional shape of an object such as the transverse beam 22. The shape of the engagement recess 19 does not have to be a shape in which the entire inner side of the engagement arm 20 matches the cross-sectional shape in the circumferential direction of the object such as the transverse beam 22, and may be in a form of partial touch.
The shape of the engagement arm 20 and the shape of the engagement recess 19 are such that the U-shaped groove, the V-shaped groove, and the arc-shaped groove are recessed so as to match the cross-sectional shape of the object such as the transverse beam 22. Etc., as appropriate.
The hexagon socket head cap bolt 5 is engaged with an electric rotating tool in the hexagon socket while being screwed into the female thread portion 6 on the gripping metal 3 side and the female thread member 7 on the support frame member 2 side. When it is rotationally driven so as to move forward toward the gap 17, it moves forward toward the gap 17, and when it is driven reversely, it moves backward.
Although illustration is omitted, in FIG. 4, when the hexagon socket head bolt 5 is moved forward toward the gap 17, each side plate portion 18 of the gripping metal body 14 comes into contact with the shaft portion of the hexagon socket head bolt 5. The engaging arms 20 facing each other connected to the side plate portions 18 are directions in which the shaft portions of the hexagon socket head cap bolts 5 serve as stoppers and the engagement arms 20 expand (directions in which the side plate portions 18 approach). The side plates 18 are prevented from being elastically deformed, and the engagement arms 20 are made unexpandable.
The forward movement of the hexagon socket head cap bolt 5 is performed as necessary with the safety fence 1 installed on the existing fence 23.

  The length dimension of the hexagon socket head cap bolt 5 is in the axial direction from the bottom plate 9 and the flange 12 of the support frame member 2 so that the hexagon socket head bolt 5 on the gripping metal 3 side does not protrude from the groove of the support frame member 2. The hexagon socket head cap bolt 5 is prevented from protruding from the support frame member 2 or the fence panel 4 by being shorter than the length dimension. In this way, the hexagon socket head cap screw 5 that does not protrude to the surface side of the fence panel 4 is prevented from being easily rotated by a commercially available manual rotating tool. .

  In the form shown in the figure, the upper and lower gripping members 3 have a smaller cross-sectional outer diameter than the upper beam 22 to be gripped, as shown in FIG. Therefore, the grip metal body is also made small, and an adjustment plate such as a washer or an adjustment block 24 is interposed and fixed between the grip metal 3 and the bottom plate 9 of the support frame member 2. Therefore, it is not necessary to adjust the front-rear position of the upper and lower horizontal beams 22 on the existing side. When the outer diameters of the upper and lower horizontal beams 22 and 22 on the existing side are the same, the same upper and lower gripping fittings 3 are attached to the support frame member 2.

As shown in FIG. 6, the mounting bracket 8 is formed by a pressing bracket 25, a head bolt 13, and a nut 27.
In a state where the fence panel 4 is brought into contact with the flange 12 on the front surface side of the support frame member 2 and the locking grooves 29 of the grooved engaging portions 28 in the presser fitting 25 are respectively engaged with the vertical wire members 30. A nut 27 is screwed and fixed to the distal end portion of the head bolt 13 inserted through the through hole of the bottom plate portion 15 of the support frame member 2 and the through hole of the presser fitting 25, and the fence panel 4 is connected to each support frame member 2. It is fixed in a state where it is crimped to.
In the form shown in the figure, the interval between adjacent vertical wire members 30 is set within the width of each flange 12 on the front side of the support frame member 2, and the holding metal fitting 25 has a substantially trapezoidal cross section. The bottom portion 26 of the trapezoidal holding metal fitting 25 having a trapezoidal cross section is arranged in the groove 11 so that the headed bolt 13 and the nut 27 are positioned in the groove 11 of the support frame member 2 or the tip of the headed bolt 13 is a fence panel. 4 so as not to protrude to the surface side.
In the illustrated embodiment, as shown in FIG. 6, a grid-like fence panel 4 composed of a vertical wire 30 and a horizontal wire 31 is arranged on the front side of the support frame 2, and the support frame 2 is attached to the support frame 2 by a mounting bracket 8. It is attached.

In the present invention, the fence panel 4 is produced so that the hands, feet, and body of the worker can be produced from the mesh by reducing the mesh in order to surely prevent humans from entering the production line side of the factory or the like. It does not enter the line side.
Therefore, the fence panel 4 may be any one of a mesh fence panel, a lattice fence panel, a fence panel made of a wire mesh such as a rhombus wire mesh, a fence panel made of a plate-like panel, a fence panel made of a mountain shape or a corrugated panel.
In the case of a plate-like panel, a chevron or a corrugated panel, a small-diameter opening for operating the hexagon socket head bolt 5 and a rectangular opening for inserting and arranging the intermediate part of the presser fitting 25 are formed as a plate-like panel, chevron or By providing the corrugated panel, a plate-shaped panel, a mountain shape, or a corrugated panel can be easily used for the safety panel of the present invention.
In the upper part of the fence panel 4, in a side view, a fence-shaped (longitudinal, groove-shaped) trunk edge 32 is formed, and in the lower part, a fence panel is formed with an L-shaped hem. ing.
As shown in FIG. 15, it may be a circular (cylindrical in the longitudinal direction) trunk edge portion 32 in a side view, and the lower portion may be linear.

In the present invention, the front surfaces of the flanges 12 of the plurality of (two) support frame members 2 are arranged in parallel with each other at an interval, and the front surfaces of the flanges 12 of the support frame members 2 are arranged on the front surface side. Since the fence panel 4 is arranged across, the fence panel 4 can be supported in a stable state by the flange 12.
Further, the grip metal fitting 3 on the back side of the support frame member 2 is connected by a female screw member 7 on the front surface side of the support frame member 2, a female screw part 6 of the grip metal fitting 3, and a hexagon socket head cap screw 5 for connecting them. Therefore, in the state where the female screw member 7 on the front side of the support frame member 2 is loosened, the gripping fitting 3 is rotated by a predetermined angle around the axis of the hexagon socket head bolt 5 to tighten the female screw member 7. The proximal end side of the gripping metal fitting 3 is crimped to the support frame member 2 and held in position. Thus, the gripping metal 3 is provided so as to be adjustable at an arbitrary position around the bolt shaft with respect to the support frame member 2.
Therefore, the safety fence 1 of the present invention holds the safety fence 1 around the axis of the hexagon socket head bolt 5 of the gripping bracket 3 in a state where the required angle is rotated, so that the safety fence 1 can be used as a frame material or a column of an automatic warehouse or It can also be attached to the column 33.
In the embodiment in which a plurality of gripping fittings 3 are provided on the support frame member 2, it is not necessary to set the positions of the gripping fittings 3 around the bolt axis to the same position, and each gripping fitting 3 is inclined to the horizontal beam 22. Or, depending on the installation location of the support 33, the mesh fence, the lattice fence, etc., the position may be appropriately adjusted around the bolt axis and installed.

When the safety fence 1 in which the fence panel 4 and the gripping bracket 3 are attached to the support frame member 2 as described above is attached to an existing handrail such as the horizontal beam 22 as shown in FIG. As shown in FIG. 7, the operator holds each gripping bracket 3 in the safety fence 1 of the present invention at the level of the object such as each lateral beam 22 and moves the safety fence 1 in the direction of the arrow, When the engagement arm 20 touches the lateral beam 22, the side plate portion 18 gradually expands along the outer peripheral surface of the lateral beam 22, and expands and engages with an object such as each lateral beam 22.
In this embodiment, from the above state, the hexagon socket head bolt 5 is moved forward so as to protrude from the female threaded portion 6 of the gripping fitting 3 so that the tip of the hexagon socket head bolt 5 is interposed between the side plate portions 18 of the gripping fitting 3. The engaging arms 20 and 20 are separated from each other by positioning the shaft portion of the hexagon socket head cap screw 5 as a stopper so that the side plate portions 18 of the gripping fitting 3 do not approach each other. It is designed not to expand.

8 to 12 show a state in which the safety fence 1 of the present invention is attached to each lateral beam 22 in the existing fence 23. As for the height dimension of the safety fence 1 attached to the existing fence 23, the height dimension of the safety fence 1 is appropriately set according to the height dimension projected from the existing fence 23.
Further, as shown in FIG. 14, when the gripping metal fitting 3 is attached to the column 33 or the like, the gripping metal fitting 3 side may be fixed in a state rotated by 90 °.
In the form shown in FIGS. 1-7, since it is the unitized safety fence 1, in FIG. 8-12, the fence panel 4 in the adjacent safety fence 1 is in the state which kept the mesh | network space | interval between vertical wires. Installed.

In addition, as shown in FIGS. 16-19, you may make it fix the vertical wire 30 of the edge part of each fence panel 4 to the support frame material 2. FIG.
Thus, in the form in which the vertical wire 30 at the end of each fence panel 4 is fixed to the support frame member 2, two or more support frame members 2 and one or two or more fence panels 4 are integrated. The unit 3 may be held by the horizontal beam 22 of the existing fence 23 and the metal fitting 3 may be fixed.
Further, in such a form, the support frame member 2 may be fixed to the transverse beam 22 or the like first, and then the fence panel 4 may be fixed to the support frame member 2 using the pressing metal 25. Also in this case, since the length of the shaft portion of the head bolt 13 of the presser fitting 25 is about the height from the bottom plate 9 to the flange 12 of the support frame member 2, the head bolt 13 is set. In addition, the holding bracket 25 can be attached without projecting laterally from the lateral beam 22 in the lateral direction. However, as described above, it is easier to install the unit fixed to the lateral beam 22 in a unitized state. be able to.

In the case of the said embodiment, since the existing fence is a horizontal beam type, the position of the holding | grip metal fitting 3 with which a safety fence is mounted | worn is matched with the height of the horizontal beam 22 of an existing fence.
However, in the case of the present invention, when the existing fence is a steel vertical lattice type having a vertical wire and a horizontal wire, the position of the support frame material 2 of the safety fence to which the gripping metal fitting 3 is attached is determined. You may make it attach so that it may match with a vertical lattice.
As described above, the gripping bracket 3 can be attached according to the shape of the member of the existing fence by changing the shape of the engagement arm 20. It is also possible to grab with a pipe.

When carrying out the present invention, the support frame member 2 may have a configuration in which each flange 12 is provided inward as long as the hexagon socket head bolt 5 and the female screw member 7 can be rotated. In addition to the hat-shaped cross section, a shape in which the flange 12 is omitted, a groove shape, or the like may be used.
Further, as the support frame member 2, the rotation of the hexagon socket head bolt 5 and the rotatable opening of the female screw member 7 and the convex portion of the presser fitting 25 are arranged on the front side of the support frame member 2. Even a square pipe having an opening can be implemented.

In the embodiment described above and later, the hexagon socket head cap bolt 5 is located on the back side of the fence panel 4 and in the groove 11 of the support frame member 2, so that the front side of the fence panel 4 is The hexagon socket head cap screw 5 is not easily rotated. The reason is that when the front side of the fence panel 4 is attached to the side beam 22 such as a handrail in a production factory so that the front side is the passage side, the production line operator walking along the passage side can easily turn the bolt 5. If the safety fence 1 can be removed, the purpose of the safety fence may not be achieved. Therefore, the hexagon socket head cap bolt 5 is positioned as far as possible in the back of the fence panel 4. Further, from the back side of the fence panel 4, the hexagon socket head bolt 5 (particularly the rotation engaging portion of the hexagon socket) is hidden in the groove 11 of the support frame member 2, and the hexagon socket head bolt 5 is turned. I can't move.
In addition, since the L-shaped rotary tool having a hexagonal shaft portion is a special rotary tool compared to a + or -drag bar at the tip, in the embodiment of the present invention, By using the rotating tool engaging portion, it is not easily rotated.

Further, as the rotating tool engaging portion 5a of the hexagon socket head bolt 5, the well-known + type or-type rotating tool engaging portion may be used. It is desirable that it is not common and is a special tool because the hexagon socket head bolt 5 is not easily rotated.
In addition to the hexagonal hole, the rotating tool engaging portion 5a may be, for example, a triangular hole, a square hole, or any other appropriate hole as long as it engages with the rotating tool. Further, the outer shape of the rotating tool engaging portion 5a may be engaged with the rotating tool. For example, the outer shape of the rotating tool engaging portion 5a may be engaged with the rotating tool by making the outer shape square. If engaged, the outer shape of the rotating tool engaging portion 5a may be an appropriate outer diameter as long as it can rotate.
The lateral through holes provided in the bottom plate 9 in each support frame member 2 may be provided with a small pitch interval as appropriate, and the through holes for the head bolts 13 and the hexagon socket head bolts 5 may be provided. If the hole is a through-hole having the same hole diameter, processing may be easy.

20-21 shows the removable fence 1 of the other form of this invention, Comprising: In this form, the form of the grip metal fitting 3 provided in the back side of the support frame material 2 is different. Yes.
In this form, the gripping fitting 3 includes two separate parts each having an engagement arm at the tip. The front end side of the hexagon socket head cap bolt 5 is fitted and arranged on one annular support member 34 made of steel or the like, and the support member 34 is fixed to the front end portion of the hexagon socket head cap bolt 5 by welding. A base end portion connected to the joint arm 20a is grasped as one main body portion 14a in the metal fitting 3, and the hexagon socket head bolt 5 is inserted into a through hole provided in the one main body portion 14a. The other annular bearing member 35 is fitted and arranged on the hexagon socket head bolt 5 at a minute interval with respect to the fixed side engagement arm 20a on the rear surface of the proximal end side of 20a. It is fixed to the tip by welding.

The fixed-side engagement arm 20a is fixed to the hexagon socket head bolt 5 so that it cannot move in the axial direction of the hexagon socket head bolt 5 except between the pair of support members 34 and 35. Since the weight of the distal end side arm is heavier than the base end portion (one fixed side main body portion 14a) connected to the fixed side engaging arm 20a, in the state before the lateral beam 22 is gripped, the fixed side is always fixed. The distal end portion of the engagement arm 20 a is positioned below the axis of the bolt 5.
Further, on the back side of the support frame member 2, the base end connected to the movable side engaging arm 20b so as to face the fixed side engaging arm 20a is set as the other movable side main body part 14b, and the other movable side is movable. The hexagon socket head cap bolt 5 is inserted and disposed in a through hole provided in the side main body portion 14b. Similarly to the above, the distal end side of the movable engagement arm 20 b is positioned below the axis of the bolt 5.
Engagement recesses 19 are provided on the opposing surfaces of the fixed engagement arm 20a and the movable engagement arm 20b, respectively.
A nut is fixed to the front side of the other movable side main body portion 14b of the movable side engagement arm 20b by welding concentrically with a bolt hole made of a through hole to form a female screw portion 6.
It is to be noted that the fence panel 4 is attached to the support frame member 2 by pressing metal fittings 25 (not shown) as in the above embodiment.

As shown in FIG. 24, in the embodiment in which the gripping metal fitting 3 is provided on the support frame member 2, the hexagon socket head bolt 5 is rotated so as to move forward without rotating the female screw member 7, so that one fixed side The fixed side engagement arm 20a is moved together with the main body part 14a to move away from the movable side main body part 14a and the movable side engagement arm 20b, and the interval between the fixed side engagement arm 20a and the movable side engagement arm 20b is increased. In the open state, the grip 3 is lowered together with the safety fence 1, and one side portion of the lateral beam 22 such as a handrail is fitted into the engagement concave portion 19 of the movable side engagement arm 20 b.
Next, the hexagon socket head cap bolt 5 is rotated backward so that the hexagon socket head cap screw 5 is moved backward, thereby moving the fixed side engagement arm 20a backward along with the fixed side main body 14a to approach the lateral beam 22. Then, as shown in FIG. 25, the horizontal beam 22 is fitted into the engagement recess 19 of the fixed engagement arm 20a and the engagement recess 19 of the movable engagement arm 20b, and is gripped and gripped.
In the above case, since the movable side engaging arm 20b is fitted to the lateral beam 22, the position of the movable side main body 14b and the internal thread portion 6 fixed thereto and the movable side engaging arm 20b with respect to the lateral beam 22 is fixed. Does not change. Further, as shown in FIG. 25, the female screw member 7 is moved backward to a position away from the front surface side of the support frame member 2 in accordance with the backward movement of the hexagon socket head bolt 5.
Thereafter, as shown in FIG. 25, when the female screw member 7 is advanced with respect to the hexagon socket head bolt 5, brought into contact with the support frame member 2, and further rotated so that the female screw member 7 advances, the support frame member 2. Is moved forward, the back side of the support frame member 2 is crimped to the front side of the movable side main body 14b and the movable side engagement arm 20b, and the support frame member 2, the movable side main body 14b, the movable side engagement arm 20b, and the female screw. Integration with the member 7 is achieved, and the removable safety fence 1 is fixed to the transverse beam 22 as shown in FIG. 23 or FIG.

  When the safety fence 1 fixed to the transverse beam 22 is detached from the transverse beam 22, the female screw member 7 is moved backward with respect to the hexagon socket head bolt 5, contrary to the above operation. Then, with the movable side engaging arm 20b fitted to the lateral beam 22, the hexagon socket head bolt 5 is rotated so as to move forward with respect to the female thread portion 6 made of a nut fixed to the movable side main body 14b. Then, by moving the fixed side main body 14a away from the movable side main body 14a, the gripping fitting 3 is opened, and the gripping fitting 3 is lifted together with the safety fence 1, so that the gripping fitting 3 together with the safety fence 1 is removed from the lateral beam 22. Can be withdrawn.

  The attaching and detaching operations of the detachable safety fence 1 according to each of the embodiments are appropriately performed by a plurality of workers by moving the safety fence 1 forward or backward, or moving it downward or upward.

In the said embodiment, although the form which attaches the holding | grip metal fitting 3 to the support frame material 2 with the holding | grip metal fitting 3 provided with the hexagon socket head bolt 5 and the internal thread member 7 was shown, although illustration is abbreviate | omitted, the hexagon socket head bolt 5 is shown. It may be omitted and the gripping metal 3 may be attached to the back side of the support frame member 2 by fixing means such as welding.
In the case of each of the embodiments described above, the screw pitch of the female screw member 7, the screw pitch of the female screw portion 6 made of a nut, and the screw pitch of the hexagon socket head bolt 5 are set to the same pitch. When the distance between the female screw member 7 and the female screw portion 6 made of a nut is constant because the female screw portion 6 is screwed into the same bolt 5, the female screw member 7 and the nut are rotated by rotating only the bolt 5. The internal thread portion 6 can be moved forward or backward.

DESCRIPTION OF SYMBOLS 1 Safety fence 2 Support frame material 3 Grasp metal fitting 4 Fence panel 5 Hexagon socket head bolt 5a Rotating tool engaging part 6 Female thread part 7 Female thread member 8 Mounting bracket 9 Bottom plate 10 Web 11 Groove 12 Flange 13 Head bolt 14 Grasping metal body 14a Fixed side body part 14b Movable side body part 15 Bottom plate part 16 Holding piece 17 Gap 18 Side plate part 19 Engaging recess 20 Engaging arm 20a Fixed side engaging arm 20b Movable side engaging arm 21 Guide part 22 Horizontal beam 23 Existing fence 24 Adjustment block 25 Press fitting 26 Bottom portion 27 Nut 28 Grooving engagement portion 29 Locking groove 30 Vertical wire 31 Horizontal wire 32 Trunk edge portion 33 Column 34 One support member 35 The other support member

Claims (10)

The main body side of the grip metal fitting having a bolt is arranged on the back side of the support frame member,
A fence panel is disposed on the front side of the support frame member and attached to the support frame member,
The gripping metal has engaging arms facing each other,
The bolt is inserted into a support frame member and screwed into a female screw member arranged on the front side of the support frame member,
The detachable safety fence, wherein the bolt is arranged to be operable by moving it in the front- rear direction from the front side of the fence panel . The main body side of the grip metal fitting having a bolt is arranged on the back side of the support frame member,
A fence panel is disposed on the front side of the support frame member and attached to the support frame member,
The gripping metal has engaging arms facing each other,
The bolt is inserted into a support frame member and screwed into a female screw member arranged on the front side of the support frame member,
The bolt is arranged to be operable by moving in the front- rear direction from the front side of the fence panel ,
The detachable safety fence, wherein the opposing engagement arms can be opened or closed by rotating the bolts. On the back side of the support frame material, the main body side of the grip metal fitting having the bolt is arranged,
The gripping metal fitting is attached to the support frame by the bolts screwed into the female screw member disposed on the front side of the support frame material and inserted through the support frame material, and screwed into the female screw portion of the gripping metal fitting, The gripping bracket is provided so as to be rotatable around the bolt axis with respect to the support frame member,
The detachable safety fence according to claim 1, wherein a fence panel is disposed on the front side of the support frame member and attached to the support frame member. On the back side of the support frame material, the main body side of the grip metal fitting having the bolt is arranged,
The gripping metal fitting is attached to the support frame by the bolts screwed into the female screw member disposed on the front side of the support frame material and inserted through the support frame material, and screwed into the female screw portion of the gripping metal fitting, The gripping bracket is provided so as to be rotatable around the bolt axis with respect to the support frame member,
The detachable safety fence according to claim 2, wherein a fence panel is disposed on the front side of the support frame member and attached to the support frame member.   The detachable safety fence according to claim 1 or 3, wherein the gripping metal is configured such that engagement arms facing each other can be expanded by elastically deforming a side plate portion of the main body. The gripping bracket has a side plate,
4. The engaging arms facing each other connected to the side plate portion are made unexpandable by contacting the side plate portion of the gripping metal with the bolt shaft portion moved forward. The detachable safety fence according to any one of 5.   The detachable safety fence according to any one of claims 1 to 6, wherein a plurality of the support frame members are arranged in parallel at intervals.   The support frame material is integrally bent and connected to the bottom plate on the back side and both side portions of the bottom plate, and a pair of webs provided to be inclined so as to be separated from each other, and bent and connected to each of the webs integrally. It is a hat-shaped support frame member having a front-side flange provided so as to be separated from each other, and a female screw member to be screwed into the bolt is disposed in a groove between the pair of webs. The detachable safety fence according to any one of claims 1 to 7.   The fence panel is formed of any one of a mesh fence panel, a lattice fence panel, a fence panel made of a wire mesh, a fence panel made of a plate-like panel, and a fence panel made of a mountain-shaped or corrugated panel. The detachable safety fence according to any one of 1 to 8.   A method of attaching the detachable safety fence according to any one of claims 1 to 9 to an existing fence, wherein the opposing engagement arms of the safety fence are positioned on the existing fence side, The safety fence is arranged so that the fence panel of the safety fence is located on the passage side, the safety fence is lifted from the passage side, and the engaging arms facing each other in the gripping metal are attached to the existing fence. How to install a removable safety fence.

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