JP3915098B2 - Safety net work tool for building construction - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
A safety net is attached in order to ensure the safety of the worker from the danger caused by the fall of the worker or work tool during the construction work such as a house. The present invention relates to a work tool used for attaching and collecting a safety net for building construction.
[0002]
[Prior art]
About the conventional safety net mounting bracket and mounting jig, the following three examples can be shown.
[0003]
In the first example, the safety net mounting bracket in which the linear body is bent in a substantially U shape and the folded portion is formed at the end portion and the outer shape are formed in a rod shape, and the folded portion of the mounting bracket is formed at one end. A mounting jig that is used when mounting the safety net, in which one groove portion is inserted or supported in the vicinity thereof, and the other groove portion on which the peripheral rope of the safety net is hooked is formed at the other end (See, for example, Patent Document 1).
[0004]
The second example is an operating rod that engages and hooks one end of a hanging metal fitting that locks the safety net at a predetermined position, and has a notch that engages one end of the hanging metal fitting with the tip of the operating rod. An operation rod constituted by an engaging pipe having an extension pipe, a telescopic pipe for adjusting the length, and a grip pipe held by an operator having a bent portion at the lower end is shown (for example, see Patent Document 2).
[0005]
In the third example, a safety net hanging tool base for a construction work in which a safety net hanging tool base is formed into a shape that can be fitted onto a horizontal member such as a girder from above, and a hook portion for locking the safety net to the base is provided. And a safety net attachment for building construction comprising a safety net suspension provided with a locking portion for engaging the safety net at the tip of the suspension and the long rod body and a lifting tool lifting rod. (For example, refer to Patent Document 3).
[0006]
[Patent Document 1]
Japanese Patent No. 3051304 (page 2, column 4, lines 7 to 27, FIGS. 9 and 10)
[Patent Document 2]
No. 2952165 (page 2, column 3, line 4 to line 11, FIGS. 2 and 5)
[Patent Document 3]
No. 2,893,171 (page 2, column 3, line 34 to column 4, line 7, FIGS. 2 and 3)
[0007]
[Problems to be solved by the invention]
The safety net work tool for building construction according to the present invention is mainly a hanging fitting, a mounting jig, and a connecting rod.
[0008]
A hanging bracket is a tool that is attached to a beam with a mounting jig and a connecting rod, and then used to suspend a safety net.
The mounting jig is a tool used for holding the hanging bracket and the safety net and installing them at a predetermined position. The connecting rod is a long rod that is connected to and attached to an attachment jig, and is a tool for an operator to operate the attachment jig at a high place in a low place.
[0009]
However, there has been a problem in attaching and collecting safety nets using conventional safety net work tools for building construction.
In the first example and the second example of the conventional example in which the safety net suspension fitting is inserted and supported in the groove provided at the end of the circular pipe of the mounting jig, the binding force in the groove of the mounting jig is not sufficient, The hanging hardware was supposed to wobble. In particular, when mounting the hanging bracket by inserting it into the hole in the beam, it is difficult to determine the target because it is at a high place and is far from the position of the operator's eyes. It was difficult to perform in a short time.
[0010]
In the first and third examples of the conventional example in which a safety net rope is placed on a hook with a shallow depth when the safety net is attached to the hanging bracket, the safety net swings up and down due to falling objects. There is a possibility that the rope of the safety net may come off from the metal hook. Furthermore, in the conventional example in which the hook opening width of the hanging metal fitting is considered to be narrow, it is difficult to insert the rope into the hook and it is difficult to attach the safety net in a short time.
Therefore, it was necessary to develop a mounting fixture having a support method that does not wobble the hanging fitting and a hanging fitting that does not cause the safety net rope to fall off the hanging fitting.
[0011]
[Means for Solving the Problems]
The present invention is formed in a substantially S shape so as to have a rope space (88), one end is hooked to a predetermined position of a beam (H) under construction, and a safety net (9) for building construction is attached to the other end. In a safety net work tool for building construction comprising a hanging metal fitting (8), an attachment jig and a connecting rod, the guide body (2) which is an attachment jig is formed of a square pipe, and the hanging metal fitting (8 ) Is inserted in the direction in which it is inserted, and a holding material (3) made of a magnet material is provided on the inner wall of the pipe around the holding groove (4). To solve the above problems by providing safety net work tools for building construction
Furthermore, in the safety net working tool for building construction, substantially L-shaped hooks (6a) and (6b) having a circular cross section and a tip portion directed downward are provided on the opposing surfaces of the square pipe. The above-mentioned problem is solved by providing a safety net work tool for building construction characterized by the above.
[0012]
【The invention's effect】
According to the present invention, in the installation work of the safety net, since the guide body uses a square pipe and the restraint of the suspension metal fitting to the guide body is strengthened by the guide groove and the attachment material which is a magnet material, It became easy to guide the hanging bracket into the target beam hole and insert it by operating the work tool without wobbling, and shortening the work time.
In addition, the work tool is equipped with a hook, and the safety net rope is forcibly placed in the rope space of the hanging bracket, so that the vertical direction of the safety net due to falling objects such as workers and work tools during construction work. The possibility that the rope could come off the hanging bracket was reduced even if a large shaking occurred . In addition, since the holding groove is formed in the guide body, the work tool can be used both when the safety net is attached to the hanging bracket and when the hanging bracket is collected. By connecting and fixing the guide body and the long bar body, it will be possible to work in a safe low place to install and collect the safety net for building construction at a high position where the worker's hand cannot reach and prevent the occurrence of personal injury As a result, a safety net can be attached and collected in a short time.
[0013]
【Example】
Embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 2, the suspension fitting 8 is formed by bending a steel bar having a diameter of about 7 mm.
[0014]
The shape of the hanging metal fitting 8 will be described in detail. Both sides of the straight portion 81 are bent into a substantially U shape, and one of the straight portions 81 is provided with a bent portion 86 following the straight portion 81, and further a straight insertion portion. 84 is provided. On the other side of the straight portion 81, a stop portion 85 that is bent following the straight portion 81 is formed, and is further bent so that the distance between the substantially U-shaped end portion and the straight portion 81 is reduced. The net holding portion 87 is provided, and the end portion that becomes the opening portion 82 is bent by the restricting portion 83 so that the distance between the straight portion 81 and the tip 89a is wide, and the rope space 88 is provided.
[0015]
As illustrated in FIG. 1, the work tool 1 includes a guide body 2 and a long bar body 7.
As shown in FIG. 3A and FIG. 3B, the guide body 2 is processed from a square pipe. A plane 21m and a plane 21n, which are a pair of planes having long sides and facing each other, and a side surface 21a and a side surface 21b, which are a pair of planes having a short side and facing each other, form a square pipe-shaped outer wall to form a guide body 2. .
[0016]
The shape of the guide body 2 will be described in detail. A surface cut at right angles to the longitudinal direction of the square pipe is defined as a lower end portion 212. By forming the holding groove 4 having substantially the same shape as the U-shaped inner contour line on the plane 21m and the plane 21n, the diaphragm side plane 22m and the straight part side plane 23m are provided around the holding groove 4 on the plane 21m. In addition, the holding groove 4 is formed so that the narrowed portion side guide groove 4a and the straight portion side guide groove 4b are provided inside the rectangular pipe.
[0017]
Further, the guide body 2 has a stop pin 5 below the lower end side of the holding groove 4, and the stop pin 5 is fixed between the plane 21 m and the plane 21 n. The hooks 6a and 6b are hooks made of a metal material bent in a substantially L shape with a circular cross section, and are firmly attached to the side surface 21a and the side surface 21b of the guide body 2.
[0018]
A rod fixing hole upper portion 26f is perforated through the plane 21m and the plane 21n perpendicular to the plane 21m of the guide body 2 at the lower position of the stop pin 5. A similar lower rod fixing hole 26g is drilled at a lower position of the upper rod fixing hole 26f. A similar upper rod fixing hole 25a and lower rod fixing hole 25c are also perforated on the side surface 21a and the side surface 21b of the guide body 2.
[0019]
The holding material 3 is a sheet-like magnet, and is adhered to the linear portion side guide groove 4 b along the back surface of the side surface 21 b of the guide body 2.
[0020]
The use of the work tool 1 and the hanging metal fitting 8 used for attaching and collecting the safety net for building construction according to the present embodiment will be described in detail.
As shown in FIGS. 1 and 3, the upper end of the long rod 7 inserted inside the guide body 2 from the lower end side 212 of the guide body 2 is abutted against the stop pin 5, and the upper 26f of the rod fixing hole and the rod fixing The guide body 2 and the long bar body 7 are connected and fixed by the fixing material upper 27f and the fixing material lower 27g made of bolts and nuts inserted into the holes 26g.
[0021]
By connecting and fixing the guide body 2 and the long bar 7, it is possible to work in a safe and low place for the installation and collection of a safety net for construction work at a high position where the worker cannot reach, preventing the occurrence of personal injury. In addition, the safety net can be attached and collected in a short time.
[0022]
A method of fixing the hanging metal fitting 8 to the guide body 2 of the work tool 1 will be described with reference to FIGS. 4 and 3.
A substantially U-shaped portion formed by the straight portion 81 and the opening 82 of the hanging bracket 8 is inserted from the direction of the upper end portion 211 of the guide body 2, and the stop portion 85 of the hanging bracket 8 is brought into contact with the stop pin 5. Let
[0023]
That is, the opening 82 of the hanging bracket 8 is formed on the side of the diaphragm side guide groove 4a of the guide body 2 created by the diaphragm side plane 22m, the diaphragm side plane 22n, and the side surface 21a. The straight portion 81 of the suspension fitting 8 is inserted into the straight portion side guide groove 4b side of the guide body 2 created by the flat surface 23n and the side surface 21b. By inserting the suspension fitting 8 into the guide body 2, the linear portion 81 of the suspension fitting 8, which is a steel bar material, is attracted and fixed to the magnet material holding member 3 fixed to the linear portion side guide groove 4 b of the guide body 2. The
[0024]
As described above, the front / rear and left / right movements of the suspension fitting 8 inside the guide body 2 are restrained by the linear portion side guide groove 4b and the throttle portion side guide groove 4a of the guide body 2 in which the suspension fitting 8 is inserted. The suspension fitting 8 is attracted and fixed to the holding material 3 to prevent the suspension fitting 8 from falling off upward, and there is no wobbling left and right.
[0025]
With reference to FIGS. 5 and 6, the attachment and recovery of the hanging bracket 8 and the safety net 9 using the work tool 1 in which the long bar 7 is connected and fixed to the guide body 2 of the present invention will be described.
First, the suspension fitting 8 is inserted and attached to the narrowed portion side guide groove 4a and the straight portion side guide groove 4b of the guide body 2, and the insertion portion 84 of the suspension fitting 8 is held by the long rod 7 with the target beam H. If the elongated rod body 7 is pulled downward as it is inserted into the hole h (see FIG. 5B), the suspension fitting 8 is removed from the guide body 2, and the suspension fitting 8 is attached to the hole h of the beam H.
[0026]
Subsequently, the rope 91 of the safety net 9 is hooked on the holding groove 4 of the guide body 2 of the work tool 1 (see FIG. 5C), and the rope 91 is interposed between the opening 82 and the straight portion 81 of the suspension fitting 8. (See FIG. 5 (d)), hook the rope 91 on the hook 6 a or 6 b of the guide body 2 and pull the work tool 1 downward (see FIG. 5 (e)). It passes through the restricting portion 83 and fits in a rope space 88 formed by the net holding portion 87 and the straight portion 81 (see FIG. 5F).
[0027]
In the above, one suspension bracket 8 is attached to the beam H, and the rope 91 of the safety net 9 is stored in the suspension bracket 8. However, by repeating the above operation, the installation of the safety net 9 is completed (FIG. 6). reference).
Next, the safety net 9 and the suspension fitting 8 are collected by inserting the bent portion 86 of the suspension fitting 8 into the holding groove 4 of the guide body 2 of the work implement 1 and lifting the work implement 1 upward to form the hole h in the beam H. Further, the insertion portion 84 of the hanging bracket 8 is taken out and the hanging bracket 8 is collected. However, the hanging bracket 8 is collected with the safety net 9 attached thereto.
[0028]
In the above-described work of attaching the safety net 9, the guide body 2 is connected to the guide body 2 by using the rectangular pipe, the narrow portion guide groove 4a and the straight portion side guide groove 4b, and the holding material 3 which is a magnet material. Since the restraint of the hanger 8 is strengthened, it becomes easy to operate the work tool 1 and guide the hanger 8 to the hole h of the beam H which is the target, and to shorten the working time. .
Furthermore, the work tool 1 is provided with the hook 6a or 6b, the opening 82 and the throttle part 83 are formed in the hanging fitting 8, and the rope 91 of the safety net 9 is forcibly placed in the rope space 88 of the hanging fitting 8. As a result, during construction work, the possibility that the rope 91 may come off the hanging bracket 8 is reduced even when a large vertical movement of the safety net 9 occurs due to falling objects such as workers and work tools. In addition, since the holding groove 4 is formed in the guide body 2, the work tool 1 can be used both when the safety net 9 is attached to the suspension fitting 8 and when the suspension fitting 8 is collected.
[0029]
In the above-described embodiment, the suspension fitting 8 according to the present invention has been described with reference to the suspension fitting 8 formed so as to be inserted into the hole h of the beam H. However, the beam H may be a wooden square or other shape. Even if it exists, if the shape of the bending part 86 and the insertion part 84 is changed and formed, the usable hanging bracket 8 can be provided. In addition, the bonding material 3 of the guide body 2 according to the present invention has been described with reference to the bonding material 3 made of a sheet-like magnet material and bonded to the linear portion side guide groove 4b. 3 is not limited to the linear portion side guide groove 4b, and may be a position where the suspension fitting 8 is inserted and inside the guide body 2, and the form of the support material 3 is also a friction other than the magnet material. You may use the material which exhibits force or elastic force. Furthermore, the hook 6a and the hook 6b of the guide body 2 have been described with reference to a circular cross-section hook, but the cross-section may be a square cross-section instead of a circular cross-section. A maximum of four may be attached to the plane 21n.
[Brief description of the drawings]
FIG. 1 is a partially omitted front view of a work tool 1 according to an embodiment of the present invention.
FIG. 2 is an enlarged front view of a hanging bracket 8 according to an embodiment of the present invention.
FIG. 3 is an enlarged left side view (a) and an enlarged front view (b) of a guide body 2 according to an embodiment of the present invention.
FIG. 4 is an enlarged cross-sectional view showing a state in which the suspension fitting 8 is inserted into the guide body 2 according to the embodiment of the present invention.
FIG. 5 is an explanatory view showing a state in which the hanging bracket 8 and the safety net 9 are attached and recovered using the work tool 1 according to the embodiment of the present invention.
FIG. 6 is a perspective view showing a state in which a suspension fitting 8 and a safety net 9 are attached to a beam H according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Work tool 2 Guide body 21a Side surface 21b Side surface 21m Plane 21n Plane 211 Upper end side 212 Lower end side 22m Restriction part side plane 22n Restriction part side plane 23m Linear part side plane 23n Linear part side plane 25a Above rod fixing hole 25c Below rod fixing hole 26f Above the rod fixing hole 26g Below the rod fixing hole 27f Above the fixing material 27g Below the fixing material 3 Adhering material 4 Holding groove 4a Restriction portion side guide groove 4b Straight portion side guide groove 5 Stop pin 6a Hook 6b Hook 7 Long rod body 8 Suspension fitting 81 Linear portion 82 Opening 83 Restriction portion 84 Insertion portion 85 Stop portion 86 Bending portion 87 Net holding portion 88 Rope space 89a Tip 89b Tip 9 Safety net 91 Rope 92 Net H Beam h Hole

Claims (2)

Hanging bracket that is formed in a substantially S shape so as to have a rope space (88), one end is hooked to a predetermined position of a beam (H) under construction, and the other end is suspended from a building construction safety net (9) (8) In a safety net work tool for building construction consisting of a mounting jig and a connecting rod,
The guide body (2), which is a mounting jig, is formed of a square-shaped pipe, is formed with a notch-shaped holding groove (4) from the direction in which the suspension fitting (8) is inserted, and around the holding groove (4). A safety net work tool for building construction, characterized in that an attachment material (3) made of a magnet material is installed on the inner wall of the pipe. Hanging bracket that is formed in a substantially S shape so as to have a rope space (88), one end is hooked to a predetermined position of a beam (H) under construction, and the other end is suspended from a building construction safety net (9) (8) In a safety net work tool for building construction consisting of a mounting jig and a connecting rod,
The building construction according to claim 1, characterized in that substantially L-shaped hooks (6a) and (6b) having a circular cross section and a tip portion directed downward are provided on opposing surfaces of the square pipe. Safety net work tools.

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