JP6123148B1 - Rope direction changer - Google Patents

Abstract

A winch wire rope can be easily positioned and disposed at a desired location on a temporary scaffold. Rope direction changers 200a and 200b include a base column 201 that can be detachably attached to the building frame members 105 and 106, a sheave support member that is pivotally supported on the base column 201 so as to be pivotable in a horizontal plane, and a sheave support member. And a sheave 206 around which a winch wire rope 81 for lifting a load is wound. The rope entrance or the rope exit of the sheave 206 coincides with the extension line of the pivot shaft of the sheave support member. The winch wire rope 81 is unwound from the winch 80 installed at the uppermost part of the temporary temporary scaffold, wound around the sheave 206 of the rope direction changer 200a, and the sheave 206 of 200b, and bent 90 degrees at a time. It arranges in the direction. [Selection] Figure 10

Description

  The present invention relates to a rope direction changer, and is particularly suitable as an auxiliary tool for unloading scaffold members and building members by installing a simple crane on a temporary scaffold such as a construction site of a new building or a renovation work such as a condominium or a building. Related to a rope direction changer.

At construction sites such as condominiums and buildings, a simple crane is installed in the temporary scaffolding to assemble the temporary scaffolding and carry materials into the building, and the temporary scaffolding is installed above the temporary scaffolding from the ground. Materials and building materials are lifted and taken into the scaffolding.
FIG. 1 shows an installation example of a conventional simple crane used at a building renovation site. A base column 4 is detachably fastened to the front vertical frame 2A of the upper building frame member 2 of the temporary scaffold 1 by using a plurality of clamps 3, and a bracket 5 extended forward on the base column 4. Is installed. A lifting pulley 7 is suspended from a front end of the bracket 5 via a pulley attachment portion 6. A wire rope 9 unwound from a winch 8 installed near the ground of the temporary scaffold 1 is wound around an unloading pulley 7 and then hung downwards, and a hanging hook 10 is attached to the tip. A hanging wire 11 and an intervening rope 12 are hung on the hanging hook 10. The ground worker A unwinds the wire rope 9 from the winch 8 by using the remote controller 13 to lower the sling wire 11 near the ground, and hangs it on a lifting material (scaffold member) 14 as a suspended load. Then, the winch 8 is operated by the remote controller 13 to wind up the wire rope 9 and is unloaded from the ground to the height of the stage above the temporary scaffold 1, and the winch 8 is stopped. The worker B on the stage above the temporary scaffold 1 takes the unloaded material 14 unloaded into the scaffold. During unloading, the worker A on the ground operates the interposition rope 12 to suppress the swing of the suspended load.

  By the way, if the winch 8 is installed just under the unloading pulley 7 of the bracket 5, the wire rope 9 comes into contact with or entangles with the suspended load, and the unloading operation is hindered. For this reason, the winch 8 is installed at a place away from just below the unloading pulley 7 of the bracket 5, the middle of the wire rope 9 is hung on the pulley 15, and the pulley 15 is pulled to the side building frame member 17 by the pulling wire 16. The contact between the suspended load and the wire rope 9 is avoided. At this time, a pulling force to the side (left side in FIG. 1) is applied to the tip of the bracket 5. The bracket 5 is originally pivotally supported by the base support column 4 so as to be able to turn left and right within the horizontal plane. However, if the tip of the bracket 5 turns sideward due to the pulling force to the side, the unloading pulley 7 Since the suspended load comes too close to the temporary scaffold 1 and comes into contact with the temporary scaffold 1, the bracket 5 is fixed to the base column 4 so as not to be pivotable at a position where the bracket 5 faces forward using a clamp or the like. For this reason, the worker B on the upper stage of the temporary scaffolding 1 has to extend the hand and lift it up to the vicinity of the unloading pulley 7 to force it into the scaffolding, which is very dangerous. It was.

  As a countermeasure, the present inventor has proposed a new simple crane installation method as shown in FIG. In FIG. 2, 30 is a temporary temporary scaffolding, 31 is the uppermost building frame member of the temporary temporary scaffolding 30 (structure of the temporary temporary scaffolding), and 40 is installed above the vertical frame 31A on the front side of the building frame member 31. A simple crane main body, 50 is an auxiliary tool installed in the vertical frame 31A on the lower side of the simple crane main body 40, and 14 is unloaded by the simple crane main body 40 from the ground to the stage one step below the uppermost part of the temporary temporary scaffold 30. Material (scaffolding member). The simple crane main body 40 and the auxiliary tool 50 constitute a simple crane.

  3, reference numeral 41 is a base support column made of a square pipe as a base member, and is attached to the upper part of the vertical frame 31 </ b> A on the front side of the building frame member 31 by three fastening brackets (clamps) 42. Fastened vertically and detachably. The fastening bracket 42 may be fixed to the base column 41 in advance, or may be detachably attached to the base column 41 in the field. Reference numeral 43 denotes a triangular frame-shaped bracket which is attached to the base column 41 so that it can turn 90 to 120 degrees to the left and right with reference to the front in the horizontal plane by two support shafts 44. A U-shaped load-side pulley mounting bracket 46 as a load-side pulley mounting portion is fixed to the front end of the upper frame 45 of the bracket 43, and the load-side pulley 47 is detachably suspended from the load-side pulley mounting bracket 46. Has been.

  Among the auxiliary tools 50 shown in the lower side of FIG. 3, reference numeral 51 denotes a base column made of a square pipe as a base member, and two fastening brackets (clamps) 52 allow the inner frame of the vertical frame 31 </ b> A on the front side of the building frame member 31. It is fastened to the lower side close to the simple crane main body 40 in the vertical direction and detachably. The fastening bracket 52 may be fixed to the base column 51 in advance, or may be detachably attached to the base column 51 in the field. 53 is a winch side sheave support member composed of a square pipe installed in a vertical direction, and is 90 to 120 degrees left and right with respect to the base column 51 by two supporting shafts 54 in the horizontal plane with respect to the front in the horizontal plane. It is mounted so that it can be turned one by one. A pair of sheave attachment plates 55 and 55 extending downward are attached to the lower end of the winch side sheave support member 53 by bolts, and the winch side sheave 56 is attached to the lower ends of the sheave attachment plates 55 and 55. Is mounted vertically.

As shown in FIG. 4, the rope entrance 56 </ b> A of the winch side sheave 56 coincides with the axis line of the support shafts 54, 54 (the turning axis line of the winch side sheave support member 53) C regardless of the turning direction of the winch side sheave support member 53. ((1) to (3) in FIG. 4 indicate the forward state, the left turn state, and the right turn state of the winch side sheave 56, respectively).
The fastening bracket 42 and the support shaft 44 of the simple crane body 40 are the same members as the fastening bracket 52 and the support shaft 54 of the auxiliary tool 50, and the base column 41 of the simple crane body 40 and the base column 51 of the auxiliary tool 50 are the same. It is formed from a square pipe with a cross-sectional dimension. Therefore, by adjusting the orientation when the base column 51 of the auxiliary tool 50 is mounted on the lower side of the simple crane body 40 in the vertical frame 31A to which the simple crane body 40 is mounted, the pivot axis C ′ of the bracket 43 is adjusted. And the pivot axis C of the winch side sheave support member 53 (the pivot axis of the winch side sheave 56) C can be made to coincide (see FIGS. 6 and 7).

  Returning to FIG. 2, two single pipes 32 and 33 are provided near the ground of the temporary temporary scaffold 30 and fastened by a clamp 34, and a winch 80 is attached to these single pipes 32 and 33. Yes. The winch 80 is installed immediately below the winch side sheave 56 of the auxiliary tool 50. A winch wire rope 81 unwound from the winch 80 is arranged vertically upward toward the winch side sheave 56 along the temporary temporary scaffold 30, and is wound around the winch side sheave 56 from below the winch side sheave 56. After that, a suspension hook 82 that is wound around a load-side pulley 47 suspended from the simple crane body 40 and attached to the tip is suspended downward.

2 and 5 are explanatory diagrams of the material unloading method by the simple crane main body described above, and FIGS. 6 and 7 are explanatory diagrams showing how the brackets and the auxiliary tools pivot in conjunction with each other. Refer to these drawings hereinafter. Then, the usage method of the simple crane of FIG. 2 is demonstrated.
As shown in FIG. 2, on the front side of the uppermost portion of the temporary temporary scaffold 30, the simple crane main body 40 is fastened by the fastening bracket 42 in a state of facing forward near the upper end of the vertical frame 31A arranged in the vertical direction. It is assumed that the auxiliary tool 50 has been mounted in a forward-facing state on the lower side close to the simple crane body 40 in the same vertical frame 31A. It is assumed that the auxiliary tool 50 is mounted so that the pivot axis C ′ of the bracket 43 and the pivot axis C of the winch side sheave 56 coincide. The bracket 43 and the winch side sheave 56 of the simple crane main body 40 can turn in the range of 90 to 120 degrees to the left and right.
A load side pulley 47 is suspended from a load side pulley mounting bracket 46 at the tip of the bracket 43. A winch wire rope 81 unwound from the winch 80 installed on the temporary temporary scaffold 30 near the ground just below the winch-side sheave 56 is vertically upward toward the winch-side sheave 56 of the auxiliary tool 50 along the temporary temporary scaffold 30. And is wound around the winch side sheave 56 from below the winch side sheave 56 via the rope entrance 56A and then wound around the load side pulley 47. It is attached.
It is assumed that a worker A who operates the winch 80 on the ground and a worker B who pulls the unloading material 14 on the scaffold one step lower than the uppermost part of the temporary temporary scaffold 30 are arranged.

As shown in FIG. 2, the worker A operates the remote control 90 with the simple crane main body 40 facing forward, operates the winch 80 to unwind the winch wire rope 81, and lowers the suspension hook 82 to near the ground. . The worker A hangs the unloading material 14 with the sling wire 83 and hangs the sling wire 83 on the hanging hook 82.
The operator A operates the remote controller 90 to rotate the winch 80 to the lifting hook raising side, winds the winch wire rope 81 and raises the unloading material 14.

When the unloading material 14 has moved up to the lowermost level of the temporary temporary scaffold 30, the worker A stops the winch 80, and the worker B turns the unloading material 14 together with the bracket 43 to move the unloaded material 14 to the temporary temporary scaffold. It is brought close to 30 and taken in one step below the top of the bite temporary scaffold 30 (see FIG. 5).
The auxiliary tool 50 having the winch side sheave 56 is mounted on the immediate lower side in the vicinity of the simple crane main body 40 in the vertical frame 31A on which the simple crane main body 40 is mounted, and the winch 80 is directly below the winch side sheave 56. Since the winch wire rope 81 between the winch 80 and the winch side sheave 56 is disposed vertically upward through the vicinity of the front surface of the temporary temporary scaffold 30, the winch wire rope 81 and the suspension hook 82 are attached to the winch wire rope 81 and the suspension hook 82. A horizontal distance can be taken between the suspended lifting material 14.

In addition, since the simple crane main body 40 and the auxiliary tool 50 are mounted on the vertical frame 31A so that the pivot axis C ′ of the bracket 43 and the pivot axes C of the winch side sheave support member 53 and the winch side sheave 56 coincide with each other. When the loading material 14 is taken in and the direction of the bracket 43 changes to the left as seen from the worker B (see arrow A in FIG. 6), the winch side sheave 56 that receives the turning force from the winch wire rope 81 easily follows. And turn leftward (see arrow a in FIG. 6). On the contrary, when the loading material 14 is taken in and the direction of the bracket 43 is changed to the right as viewed from the worker B (see arrow B in FIG. 7), the winch side sheave 56 that receives the turning force from the winch wire rope 81 is used. Easily follow and turn right (see arrow b in FIG. 7). However, after the bracket 43 is directed in a certain direction and the winch side sheave 56 is changed following the certain direction, the pivot axes C ′ and C of the bracket 43 and the winch side sheave 56 are coincident with each other. The winch wire rope 81 between the side sheave 56 and the bracket 43 does not apply a turning force to the bracket 43.
In this regard, the pivot axes C ′ and C of the bracket 43 and the winch side sheave 56 do not coincide with each other. For example, the pivot axis C of the winch side sheave 56 is forward of the pivot axis C ′ of the bracket 43 as shown in FIG. When the bracket 43 is to be turned leftward from the front (see arrow A ′ in FIG. 8), the winch wire rope 81 between the winch sheave 56 and the bracket 43 pulls the bracket 43 back in the forward direction. (See arrow D in FIG. 8).

Further, since the rope entrance 56A of the winch side sheave 56 of the auxiliary tool 50 is arranged so as to coincide with the axis C of the support shaft 54, the position of the rope entrance 56A changes regardless of the turning of the winch side sheave 56. do not do. Therefore, the winch wire rope 81 from the winch side sheave 56 to the lower winch 80 hardly swings even if the bracket 43 is directed forward or left and right, and the winch wire rope below the winch side sheave 56 is not swung. 81 does not pull the winch side sheave 56 and the bracket 43 in the turning direction.
Accordingly, the bracket 43 is pivotable about the support shaft 44, and the winch wire rope 81 does not pull the bracket 43 sideward even when the bracket 43 faces forward when the load is lifted. The unloading material 14 does not contact or get entangled with the winch wire rope 81.
When the suspended material 14 is pulled into the temporary temporary scaffold 30 after the lifting, the bracket 43 can be pivoted to easily bring the suspended load 14 to the temporary temporary scaffold 30, so that the load can be pulled in. The burden is reduced.

  In the simple crane of FIG. 2, a load side pulley mounting bracket as a load side pulley mounting portion is provided at the front portion of the bracket, and the load side pulley can be detachably suspended from the load side pulley mounting bracket. At the front of the bracket, load side sheave is installed instead of load side pulley mounting bracket, and winch wire rope unwound from the winch is wound around the load side sheave of the simple crane body via the winch side sheave of the auxiliary tool. Then, the suspension hook at the tip may be suspended downward.

By the way, in the installation example of the simple crane in FIG. 2, the case where the winch is installed near the ground of the temporary scaffold immediately below the winch side sheave of the auxiliary tool has been described as an example, but the winch is directly below the winch side sheave. If it is difficult to install the winch near the ground, such as when it is difficult to install near the ground or when the temporary scaffolding is high, it may be installed at other places such as the upper part of the temporary scaffolding as shown in FIG. good.
In the installation example of the simple crane in FIG. 9, there are two on the upper end portion of the building frame members 100, 101 on the side of the building frame member 30 to which the simple crane main body 40 is attached on the uppermost front side of the temporary temporary scaffold 30. Single pipes 102 and 103 are juxtaposed and fastened by a clamp 104 in the horizontal direction, and a winch 80 is mounted near the building frame member 101 of these single pipes 102 and 103. A single pipe pipe 107 is fastened by a clamp 108 horizontally near the lower ends of the lower building frame member 105 and the lower building frame member 106 of the building frame member 30. A single pipe 109 is fastened in parallel to the front side by a clamp 110. Of the building frame members 105 and 106, a single pipe 111 is fastened horizontally by a clamp 112 slightly above the single pipe 107. A pulley 115 disposed by a wire 113 and a chain block 114 is provided between the left end of the single pipe 109 in FIG. 9 and the right side of the building frame member 105 in the single pipe 111. Further, a pulley 118 disposed by a wire 116 and a chain block 117 is provided between the right end of the single pipe 109 in FIG. 9 and the left side of the building frame member 106 in the single pipe 111. The winch wire rope 81 unwound from the winch 80 is disposed downward along the building frame members 101 and 105, wound around the pulleys 115 and 118, and then upward along the building frame members 106 and 30. The suspension hooks 82 are suspended downward by being wound around the winch sheave 56 of the auxiliary tool 50 and the load side pulley 47 of the simple crane main body 40. By adjusting the wire 113 and the chain block 114, the winch wire rope 81 between the winch 80 and the pulley 115 extends substantially vertically downward near the front surface along the front surface of the temporary temporary scaffold 30. By adjusting the wire 116 and the chain block 117, the winch wire rope 81 between the pulley 118 and the winch side sheave 56 is vertically extended near the front surface along the front surface of the temporary temporary scaffold 30. I am doing so.

According to the installation example of the simple crane in FIG. 9, even when the winch 80 is installed at the uppermost part of the temporary temporary scaffold 30, the winch wire rope 81 does not come into contact with the suspended load or become tangled as in FIG. 2. In addition, the winch wire rope 81 can be prevented from inadvertently pulling the bracket 43 in the turning direction.
However, in the installation example of the simple crane in FIG. 9, pulleys 115 and 118 are attached to the front surface of the temporary temporary scaffold 30 to change the direction of the winch wire rope 81, and the rope entrance of the pulley 115 is connected to the winch 80. It is difficult to accurately position at a desired position directly below, or to accurately position the rope outlet of the pulley 118 at a desired position immediately below the winch side sheave 56 of the auxiliary tool 50, and the wire 113 and the chain block 114, the wire 116 and the chain. There is a drawback that it takes time to adjust the position of the pulleys 115 and 118 by the block 117.

Utility Model Registration No. 3023683

  The present invention has been made in view of the above-described problems of the prior art, and provides a rope direction changer capable of easily positioning and arranging a winch wire rope for lifting a load on a temporary scaffold at a desired location on the temporary scaffold. Its purpose is to provide.

In invention of Claim 1,
A base member detachably attachable to the structure of the temporary scaffold,
A sheave support member pivotally supported by a base member so as to be rotatable in a horizontal plane by a support shaft ;
A sheave that is attached to a sheave support member and that is wound around the winch wire rope that lifts the load,
Consisting of
The sheave is mounted on the end side of the sheave support member viewed in the direction of the pivot axis, away from the support shaft in the direction in which the pivot axis of the sheave support means is extended,
The rope entrance or exit of the sheave is aligned with the extension of the pivot of the sheave support,
It is characterized by.
In invention of Claim 2,
A base member detachably attachable to the structure of the temporary scaffold,
A sheave support member pivotally supported by the base member so as to be rotatable in a horizontal plane;
Two first and second sheaves disposed on the same vertical plane, which are wound around the winch wire rope that is attached to the sheave support member and lifts the load,
Consisting of
The rope entrance or rope exit of the first sheave coincides with the extension line of the pivot axis of the sheave support member,
The second sheave is arranged away from the first sheave as viewed from the pivot axis of the sheave support member;
It is characterized by.

According to one of the present invention, even if the direction of the sheave support member of the rope direction changer attached to the structure of the temporary scaffold is changed, the position of the rope entrance or the rope exit of the sheave does not change. Therefore, when it is desired to bend and arrange the winch wire rope for lifting the load while positioning it at a desired position of the temporary scaffold, the arrangement work can be performed more easily and more quickly than using a pulley.
According to another aspect of the present invention, even if the direction of the sheave support member of the rope direction changer attached to the temporary scaffold structure is changed, the position of the rope entrance or the rope exit of the first sheave does not change. The second sheave is provided on the front side in the same vertical plane as the first sheave, and can be bent stepwise by winding a rope around the first and second sheaves. Therefore, when it is desired to arrange a winch wire rope for lifting a load while stepping while positioning it at a desired location on the temporary scaffold, the arrangement work can be performed more easily and more quickly than using a pulley.

It is explanatory drawing which shows the example of installation of the conventional simple crane. It is the perspective view which abbreviate | omitted partially which shows the use condition of the simple crane which improved FIG. It is an external appearance perspective view which shows the structure of the simple crane main body in FIG. 2, and an auxiliary tool. It is operation | movement explanatory drawing of an auxiliary tool. It is explanatory drawing of the usage method of the simple crane of FIG. It is explanatory drawing which shows a mode that a bracket and an auxiliary tool rotate in response. It is explanatory drawing which shows a mode that a bracket and an auxiliary tool rotate in response. It is operation | movement explanatory drawing when the pivot axis of a bracket and a winch side sheave does not correspond. It is explanatory drawing of the other usage method of a simple crane. It is a perspective view which shows the use condition of the rope direction changer which concerns on 1st Example of this invention (Example 1). It is an external appearance perspective view which shows the structure of the rope direction changer in FIG. It is operation | movement explanatory drawing of the rope direction converter in FIG. It is explanatory drawing which shows the other usage example of the rope direction changer in FIG. It is operation | movement explanatory drawing of the simple crane in FIG. It is a perspective view which shows the use condition of the rope direction changer which concerns on 2nd Example of this invention (Example 2). It is an external appearance perspective view which shows the structure of the rope direction changer in FIG. It is a disassembled perspective view which shows the structure of the rope direction changer in FIG. It is operation | movement explanatory drawing of the rope direction converter in FIG. It is operation | movement explanatory drawing of the simple crane in FIG. It is operation | movement explanatory drawing of the simple crane in FIG. It is operation | movement explanatory drawing of the simple crane in FIG.

  Hereinafter, the best mode of the present invention will be described based on examples.

A first embodiment of the present invention will be described with reference to FIGS. 10 is a perspective view showing a use state of the rope direction changer according to the present invention, FIG. 11 is an external perspective view showing the configuration of the rope direction changer in FIG. 10, and FIG. 12 is a view of the rope direction changer in FIG. It is operation | movement explanatory drawing. In addition, the same code | symbol is attached | subjected to the component same as FIG.
In FIG. 9, the direction of the winch wire rope unwound from the winch is changed by using two pulleys and led to the winch side sheave of the auxiliary device. However, in the embodiment of FIG. Instead of the direction changer, it is guided.
In FIG. 10, 30 is a bitty temporary scaffold, 31 is the uppermost building frame member of the bitty temporary scaffold 30 (the structure of the bitty temporary scaffold), and 40 is installed above the vertical frame 31 </ b> A on the front side of the building frame member 31. A simple crane main body, 50 is an auxiliary tool installed in the vertical frame 31A on the lower side of the simple crane main body 40, and 14 is unloaded by the simple crane main body 40 from the ground to the stage one step below the uppermost part of the temporary temporary scaffold 30. Material (scaffolding member). The simple crane main body 40 and the auxiliary tool 50 constitute a simple crane.

Two single-pipe pipes 102 and 103 are attached to the upper end portion of the building frame members 100 and 101 on the side of the building frame member 30 to which the simple crane main body 40 is mounted on the uppermost front side of the temporary temporary scaffold 30. It is fastened by a clamp 104 in the horizontal direction, and a winch 80 is mounted near the building frame member 101 of these single pipe pipes 102 and 103. Rope direction changers 200a and 200b are detachably mounted at the same height near the lower ends of the lower building frame member 105 and the lower building frame member 106 of the building frame member 30, respectively. .
As shown in FIG. 11 (1), 201 of the rope direction changer 200a is a base column composed of a square pipe as a base member, and is vertically positioned near the lower end of the building frame member 105 by two fastening brackets (clamps) 202. Oriented and detachable. The fastening bracket 202 may be fixed to the base column 201 in advance, or may be detachably attached to the base column 201 in the field. Reference numeral 203 denotes a sheave support member made up of a square pipe mounted in a vertical direction, and swivels by 90 to 120 degrees to the left and right with respect to the front in the horizontal plane with respect to the base column 201 by two support shafts 204 at the top and bottom. It is mounted as possible (see FIGS. 11 (2) and 11 (3)). A set of sheave mounting plates 205 and 205 extending upward is attached to the upper end portion of the sheave support member 203 by bolting, and the sheave 206 is vertically oriented on the upper end portions of the sheave mounting plates 205 and 205. It is installed.

The rope direction changer 200b is configured in exactly the same way as 200a. However, the location of the rope entrance 206A of the rope direction changer 200a is the rope exit (see reference numeral 206B in FIG. 12) in the rope direction changer 200b. As shown in FIG. 12, the rope inlet 206A and the rope outlet 206B of the sheave 206 of the rope direction changers 200a and 200b are the axis of the support shaft 204 (the turning axis of the sheave support member 203) regardless of the turning direction of the sheave support member 203. It does not change while being consistent with C0 ((1) to (3) in FIG. 12 indicate the forward state, the left turn state, and the right turn state of the sheave 206, respectively).
The fastening bracket 202 and the support shaft 204 of the rope direction changers 200a and 200b are the same members as the fastening fitting 52 and the support shaft 54 of the auxiliary tool 50, and the base column 201 and the auxiliary tool 50 of the rope direction changers 200a and 200b. The base column 51 is formed from a square pipe having the same cross-sectional dimension. Therefore, the pivot axis C of the winch sheave 56 and the pivot axis of the sheave support member 203 are adjusted by adjusting the orientation in the horizontal plane when the base column 201 of the rope direction changer 200b is attached to the lower side of the auxiliary tool 50. It can be easily mounted so that the swivel axis (C0 of the sheave 206) matches.
The other components in FIG. 10 are configured in exactly the same way as in FIG.

Next, the operation of the rope direction changers 200a and 200b in FIG. 10 will be described. In addition, as shown in FIG. 10, the simple crane main body 40 and the auxiliary tool 50 are installed above and below the vertical frame 31A on the front side of the uppermost building frame member 31 of the temporary temporary scaffold 30 so that the pivot axes C ′ and C coincide with each other. Suppose that Further, it is assumed that the winch 80 has already been installed near the front side of the vertical frame member 101 on the side of the simple crane main body 40 at the uppermost part of the temporary temporary scaffold 30.
The winch wire rope 81 unwound from the winch 80 is disposed substantially vertically downward along the front surface of the bite temporary scaffold 30 and then bent in the horizontal direction, and is bent directly below the auxiliary tool 50 and disposed substantially vertically upward. In this case, the base column 201 of the rope direction changers 200a and 200b is placed at the same height position near the lower end of the building frame member 105 on the lower side of the building frame member 101 and the building frame member 106 on the lower side of the building frame member 30. Wear it forward. At this time, the turning axis C0 of the rope direction converter 200a is made to coincide with the direction of the winch 80, and the turning axis C0 of the rope direction converter 200b is made to coincide with the turning axis C of the auxiliary tool 50.

  Even if the direction change of the sheave support member 203 is changed in the rope direction changer 200a, the position of the rope entrance 206A of the sheave 206 does not change. Further, even if the rope direction changer 200b changes the direction of the sheave support member 203, the position of the rope outlet 206B of the sheave 206 does not change. Therefore, the winch wire rope 81 unwound from the winch 80 is wound around the sheave 206 of the rope direction changer 200a from the rope entrance 206A, so that the winch wire rope is located near the lower end of the building frame member 105 on the front side of the temporary temporary scaffold 30. While positioning 81, it can be easily bent in the direction of the rope direction changer 200b. The winch wire rope 81 extended from the rope direction changer 200a is wrapped around the sheave 206 of the rope direction changer 200b and is taken out from the rope outlet 206B, so that it is near the lower end of the building frame member 106 on the front side of the temporary temporary scaffold 30. The winch wire rope 81 can be easily bent in the direction of the winch side sheave 56 of the auxiliary tool 50 vertically upward while positioning the winch wire rope 81.

  When the bracket 43 of the simple crane main body 40 is directed forward with respect to the bite temporary scaffold 30 in order to lift the load, the winch side sheave 56 of the auxiliary tool 50 follows and faces forward. When the bracket 43 is turned to the left for taking in the load or the like, the winch side sheave 56 of the auxiliary tool 50 also follows the left, but the rope entrance 56A coincides with the turning axis C, and the lower winch wire rope 81 cannot swing. Accordingly, no turning force is generated in the sheave 206 of the rope direction changer 200b.

  According to this embodiment, even if the direction of the sheave support member 203 of the rope direction changers 200a and 200b is changed, the positions of the rope entrance 206A and the rope exit 206B of the sheave 206 do not change. A winch 80 is installed on the uppermost part of the temporary temporary scaffold 30 near the front side of the vertical frame member 101 on the side of the simple crane main body 40, and the winch wire rope 81 is connected to the front side near the lower end of the building frame member 105 immediately below the winch 80. When positioning at the front side near the lower end of the building frame member 106 directly below the auxiliary tool 50 and bending it twice from the vertical downward direction to the horizontal direction and from the horizontal direction to the vertical upward direction, close to the lower end of the building frame member 105. The rope direction changer 200a, the rope direction changer 200b is mounted forward near the lower end of the building frame member 106, the winch wire rope 81 is attached to the rope direction changer 200a, 200b, the winch side sheave 56 of the auxiliary tool 50, and the load side pulley. The winch wire rope 81 can be arranged more easily and more quickly than using a pulley.

  In the above-described embodiment, when the winch is installed at the uppermost part of the temporary scaffolding, the arrangement of the winch wire rope from the winch to the simple crane main body with the auxiliary tool can be easily performed using two rope direction changers. Although the case where it was made to be able to be described was demonstrated, this invention is not limited to this at all, It can be used also when installing a winch in other places, such as on a building.

  An example of use when a winch is installed on a building is shown in FIG. In FIG. 13, the base column 41 of the simple crane main body 40 and the base column of the auxiliary tool 50 are set to the left side and immediately below the upper end of the vertical frame 301 </ b> A on the front side of the uppermost building frame member 301 of the temporary temporary scaffold 300. 51 is detachable and fastened so that the turning axis C ′ of the bracket 43 and the turning axis C of the winch side sheave 56 coincide. Further, in the vertical frame 301A, the base column 201 of the rope direction changer 200b is detachably attached to the lower side of the auxiliary tool 50, and the pivot axis C0 of the sheave 206 is the pivot axis C of the bracket 43 of the simple crane main body 40. 'And the swivel axis C of the winch side sheave 56 of the auxiliary tool 50 are fastened to coincide with each other. Here, if the simple crane body 40 is fastened forward with respect to the vertical frame 301 </ b> A, as shown in FIG. 14 (1), when the bracket 43 is turned leftward from the front, the tip of the bracket 43 is the scaffold of the temporary temporary scaffold 300. It reaches only to the inside. In FIG. 13, when the simple crane main body 40, the auxiliary tool 50, and the rope direction changer 200 b are fastened to the left side with respect to the vertical frame 301 </ b> A, the bracket 43 is turned leftward from the front as shown in FIG. 14 (2). In addition, the tip of the bracket 43 reaches the top of the building 400 on the rear side of the temporary temporary scaffold 300, so that it is easy to unload onto the building 400.

  A winch 80 is installed on the building 400 behind the building frame member 301, and after the winch wire rope 81 unwound from the winch 80 is wound around the sheave 206 of the rope direction changer 200b, the rope exit 206B is disposed vertically upward along the vertical frame 301A, and is wound around a winch side sheave 56 of the auxiliary tool 50 and a load side pulley 47 suspended from the simple crane main body 40, and a suspension hook 82 at the tip. Is drooping downward. A hanging wire 83 on which the unloading material 14 is slung is hung on the hanging hook 82.

  According to the example of FIG. 13, the simple crane body 40 and the auxiliary tool 50 are attached to the building frame member 300 sideways, the winch 80 is installed on the building 400, and the winch wire rope 81 is installed immediately below the auxiliary tool 50. When positioning near the lower end of the frame member 300 and bending it vertically upward, the rope direction converter 200b is mounted laterally near the lower end of the building frame member 300, and the winch wire rope 81 is attached to the rope direction converter 200b. The winch-side sheave 56 of the auxiliary tool 50 and the load-side pulley 47 may be wound in this order, and the winch wire rope 81 can be disposed more easily and quickly than using the pulley.

Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 15 is a perspective view showing a use state of the rope direction changer according to the present invention, FIG. 16 is an external perspective view of the rope direction changer in FIG. 15, and FIG. FIG. 16 (2) shows a state where the two-stage sheave is set to the right side. 17 is an exploded view of the rope direction changer, FIG. 18 is a view for explaining the operation of the rope direction changer, FIGS. 19 and 20 are views for explaining the operation of the simple crane body and the auxiliary tool, and FIG. 21 is a view for changing the rope direction in FIG. It is a perspective view which shows the use condition of a container. In addition, the same code | symbol is attached | subjected to the component same as FIG.
In the embodiment of FIG. 10, the case where one sheave is provided in the rope direction changer is illustrated, but FIG. 15 shows the case where two sheaves are provided in the same vertical plane in the diagonal direction.

In FIG. 15, the base column 41 of the simple crane main body 40 and the base column of the auxiliary tool 50 are set to the left side and immediately below the upper end of the vertical frame 301 </ b> A on the front side of the uppermost building frame member 301 of the bite temporary scaffold 300. 51 is detachable and fastened so that the turning axis C ′ of the bracket 43 and the turning axis C of the winch side sheave 56 coincide. Further, a base column (see reference numeral 201c in FIG. 16) of the rope direction changer 200c is detachably mounted on the lower side of the auxiliary tool 50 in the vertical frame 301A so as to face left.
As shown in FIG. 16 (1), 201c of the rope direction changer 200c is a base column composed of a square pipe as a base member, and is vertically oriented to the building frame member 301A by two fastening brackets (clamps) 202c. It is detachably fastened. The fastening bracket 202c may be fixed to the base column 201c in advance, or may be detachably attached to the base column 201c in the field. 203c is a sheave support member composed of a square pipe mounted in a vertical direction, and is rotated 90 to 120 degrees to the left and right with respect to the front in the horizontal plane by two support shafts 204c with respect to the base column 201c. 16 (1) shows the appearance when the sheave support member is directed forward, and FIG. 16 (2) shows the appearance when the sheave support member is turned rightward. A set of sheave mounting plates 205c and 205c extending upward is attached to the sheave support member 203c by bolts, and two sheaves 206c and 206d having the same upper and lower stages are vertically mounted on the sheave mounting plates 205c and 205c. It is mounted in the direction (see FIG. 17). The sheaves 206c and 206d are disposed in the same vertical plane and obliquely below and in front so that the lower sheave 206d is separated from the upper sheave 206c when viewed from the pivot axis C1 of the sheave support member 203c. .
Accordingly, the winch wire rope 81 can be disposed upward by winding it while bending it in the order of the sheaves 206d and 206c from the bottom.

As shown in FIG. 18, the rope outlet 206C of the sheave 206c of the rope direction changer 200c changes while keeping the axis line of the support shaft 204c (the turning axis line of the sheave support member 203c) C1 regardless of the turning direction of the sheave support member 203c. No ((1) to (3) in FIG. 18 show the forward state, the left turn state, and the right turn state of the sheave 206c, respectively).
The fastening bracket 202c and the support shaft 204c of the rope direction converter 200c are the same members as the fastening bracket 52 and the support shaft 54 of the auxiliary tool 50, and the base column 201c of the rope direction converter 200c and the base column 51c of the auxiliary tool 50. Are formed from square pipes having the same cross-sectional dimensions. Therefore, the pivot axis C of the winch side sheave 56 and the pivot axis of the sheave support member 203c (by adjusting the direction in the horizontal plane when the base column 201c of the rope direction changer 200c is mounted below the auxiliary tool 50. It can be easily mounted so that the swivel axis C1 of the sheave 206c matches.

As shown in FIG. 15, a protective net 500 is mounted on the front surface of the temporary temporary scaffold 300 from the ground to one level below the stage that takes in the load.
A winch (not shown) is installed near the ground of the bitty temporary scaffold 300 and directly below the auxiliary tool 50 (just below the rope direction changer 200c), and the winch wire rope 81 unwound from the winch is attached to the bitty temporary scaffold 300. It is disposed vertically upward along the front surface of the protective net 500, wound around the lower sheave 206d and the upper sheave 206c of the rope direction changer 200c, and then along the vertical frame 301A from the rope outlet 206C of the sheave 206c. It is wound vertically on the load side pulley 47 suspended from the winch side sheave 56 of the auxiliary tool 50 and the simple crane body 40, and the suspension hook 82 at the tip is suspended downward. A hanging wire 83 on which the unloading material 14 is slung is hung on the hanging hook 82.

Next, the operation of the rope direction changer 200c in FIG. 15 will be described. In addition, as shown in FIG. 15, the simple crane main body 40 and the auxiliary tool 50 are installed on the upper and lower sides of the vertical frame 301A on the front side of the uppermost building frame member 301 of the temporary temporary scaffold 300 so that the turning axes C ′ and C coincide with each other. Suppose that Further, it is assumed that a winch has already been installed near the ground of the temporary temporary scaffold 300 immediately below the auxiliary tool 50.
A winch wire rope 81 unwound from the winch is disposed substantially vertically upward along the front surface of the temporary temporary scaffold 300 through the front side of the protective sheet 500, and corresponds to the upper part of the protective sheet 500 and directly below the auxiliary tool 50. When it is desired to bend in a stepped manner at the position and to be arranged vertically upward toward the auxiliary tool 50 along the vertical frame 301A, the base column 201c of the rope direction changer 200c is placed on the lower vertical frame 301A of the auxiliary tool 50. Wear sideways. At this time, the turning axis C1 of the rope direction changer 200c is made to coincide with the turning axis C of the auxiliary tool 50. The winch wire rope 81 unwound from the winch is wound from the lower side in the order of the sheaves 206d and 206c, arranged upward from the rope outlet 206C, and further wound around the winch side sheave 56 and the load side pulley 47 of the auxiliary tool 50. To do.

  Even if the direction of the sheave support member 203c is changed in the rope direction changer 200c, the position of the rope outlet 206C of the sheave 206c does not change, and the winch wire rope 81 below the winch side sheave 56 of the auxiliary tool 50 cannot swing. Therefore, even if the direction of the sheave support member 203c is changed, no turning force is generated in the sheave 206c of the rope direction changer 200c. By turning the sheave support member 203c of the rope direction changer 200c to the right so as to face the front of the temporary temporary scaffold 30, the winch wire rope 81 can be easily moved to the left on the lower side of the auxiliary tool 50 in the vertical frame 301A. The winch wire rope 81 below the sheave 206d can be disposed so as not to come into contact with the temporary temporary scaffold 300 and the protective net 500 while being positioned aside.

  In order to lift the load, when the simple crane main body 40 is directed forward with respect to the temporary temporary scaffold 300, the winch-side sheave 56 of the auxiliary tool 50 follows and faces forward (see FIG. 19). When the simple crane body 40 is turned to the left for taking in the load or the like, the winch side sheave 56 of the auxiliary tool 50 also follows the left, but the rope entrance 56A coincides with the turning axis C, and the lower winch. The wire rope 81 cannot swing. Accordingly, no turning force is generated in the sheave 206c of the rope direction changer 200c, and the winch wire rope 81 below the sheave 206d maintains the vertical direction on the front side of the protective sheet 500 (see FIG. 20). When the load is taken in, the bracket 43 can be turned into the scaffold or on the building 400 by turning the bracket 43 to the left (see FIGS. 15 and 21).

  According to the second embodiment, the position of the rope outlet 206C of the first sheave 206c does not change even if the sheave support member 203c of the rope direction changer 200c attached to the vertical frame 301A of the temporary temporary scaffold 300 is changed. . The second sheave 206d is provided on the front side in the same vertical plane as the first sheave 206c, and is bent stepwise by winding the winch wire rope 81 in the order of the second and first sheaves 206d, 206c. be able to. Therefore, when the winch wire rope 81 is to be bent and disposed in a stepped manner while being positioned at a position corresponding to the front side of the temporary temporary scaffolding 300 on the upper side of the protective sheet 500 and directly below the auxiliary tool 50, a pulley is used. Also, the arrangement work can be performed easily and quickly.

  In the second embodiment described above, the case where the rope enters from the second sheave and exits from the first sheave has been described as an example, but the rope enters from the first sheave and the rope exits from the second sheave. In this case, the pivot shaft of the sheave support member and the rope entrance of the first sheave are aligned.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a case where a simple crane is installed in a temporary scaffold such as a new construction / renovation work site for a building such as an apartment or a building to unload the scaffold member and the building member.

14 Unloading material 30, 300 Bitty temporary scaffold 31, 130 Building frame member 40 Simplified crane body 50 Auxiliary tool 80 Winch 81 Winch wire rope 200a, 200b, 200c Rope direction changer 201, 201c Base column 202, 202c Fastening bracket 203, 203c Sheave support member 204, 204c Support shaft 206 Sheave 206c First sheave 206d Second sheave

Claims (2)

A base member detachably attachable to the structure of the temporary scaffold,
A sheave support member pivotally supported by a base member so as to be rotatable in a horizontal plane by a support shaft ;
A sheave that is attached to a sheave support member and that is wound around the winch wire rope that lifts the load,
Consisting of
The sheave is mounted on the end side of the sheave support member viewed in the direction of the pivot axis, away from the support shaft in the direction in which the pivot axis of the sheave support means is extended,
The rope entrance or exit of the sheave is aligned with the extension of the pivot of the sheave support,
Rope direction changer characterized by A base member detachably attachable to the structure of the temporary scaffold,
A sheave support member pivotally supported by the base member so as to be rotatable in a horizontal plane;
Two first and second sheaves disposed on the same vertical plane, which are wound around the winch wire rope that is attached to the sheave support member and lifts the load,
Consisting of
The rope entrance or rope exit of the first sheave coincides with the extension line of the pivot axis of the sheave support member,
The second sheave is disposed at a position away from the first sheave as viewed from the pivot axis of the sheave support member;
Rope direction changer characterized by

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