WO2007017957A1

WO2007017957A1 - Ramp

Info

Publication number: WO2007017957A1
Application number: PCT/JP2005/014877
Authority: WO
Inventors: Tatsuo Ono
Original assignee: Tatsuo Ono
Priority date: 2005-08-09
Filing date: 2005-08-09
Publication date: 2007-02-15
Also published as: CN101238268B; GB2442419B; GB2442419A; GB0802120D0; CN101238268A

Abstract

A ramp where footboards are always smoothly and stably held in a horizontal position without being affected by soil, pebbles, and dust, and handrails can be held at a constant height. Footboard (3) are each horizontally supported at both ends between two girders each composed of an upper chord member (1) and a lower chord member (2) that are arranged in parallel to each other. At either of the upper chord member (1) and the lower chord member (2), there is supported one end of an adjustment link for adjustably supporting the interval between the upper chord member (1) and the lower chord member (2), and at the other end, there is provided a position fixing member (9) for fixing the other end of the adjustment link at a predetermined position. Sockets (3A) for the handrails are installed in a vertical upright orientation, at side end surfaces of the footboards (3). Loosening prevention mechanisms for preventing loosening of supporting columns (23) of the handrails (22) are installed on the sockets (3A).

Description

Specification

Tapping device

Technical field

The present invention relates to a trap device that is used at a construction site such as a construction work, for example, when the worker climbs diagonally between the ground and a high-level work unit and an operator goes up and down.

Background art

At the construction site, a trap device is used to move workers up and down to a high work site. This evening lap device consists of a pair of left and right string members with a plurality of treads installed in the longitudinal direction.

However, since the evening lap device has been fixedly attached to the string material, the evening lap device, that is, the string material is placed at a high angle at a different angle depending on the situation at the work site. When installed on the work site, the treads will not be horizontal and will have a certain angle of inclination. In such a case, it is easy for the foot to slip on the tread, which may lead to an accident due to stepping off.

On the other hand, the upper chord material and the lower chord material are used as one set of girders, and two sets of these girders are placed on the left and right sides, and the treads are pivotally supported between the girders. A trapping device has been proposed in which a horizontal holding is performed by a stopper member provided on the ground plate at the lower end of the upper chord member and the lower chord member, while holding the plate approximately horizontal even when the angle changes.

However, in this conventional evening wrap device, a stagger member for holding the treadle horizontally is provided at the lower end of each girder, so it is exposed to moisture when the grounding plate is placed on the ground. There was a problem that wrinkles were easily generated, and the movement of the stopper member and the chord material was hindered by the entry of soil and pebbles, making it difficult to use the trapping device.

In addition, handrails are often provided in conventional evening wrap devices, but in this case, the handle is fixed directly to the upper chord material, so the angle of the handhold changes as the angle of the upper chord material changes. There is a problem that the height of the handrail cannot always be kept constant with respect to the tread. Disclosure of the invention

The present invention solves the above problems and can be used by freely changing the angle between the upper chord material and the lower chord material. At this time, the tread can be held horizontally at all times, The purpose is to provide a trapping device that can always be smooth and stable without being affected by pebbles or dust, and that can always hold the handrail at a constant height regardless of the angle change of the upper and lower chords. To do.

In order to achieve the above object, the evening lap device according to the present invention is configured so that both ends of a plurality of treads are placed between two sets of girders made of parallel upper and lower chords so that these treads are horizontal. One of the upper chord material and the lower chord material is supported by one end of an adjustment link that holds the distance between the upper chord material and the lower chord material in an adjustable manner, and the other end side of the adjustment link is supported on the other. A position fixing member for fixing at a predetermined length position is provided, and a handrail socket for detachably inserting a handrail support column is attached to the side end surface of the tread plate so as to stand perpendicularly to the side end surface. Is provided with a loosening prevention mechanism that prevents loosening of the column.

In this manner, the upper chord material and lower chord material and the respective treads can be in a parallelogram relationship that is pivotally supported at their intersections, and the treads are maintained horizontally regardless of the inclination of the girder composed of the upper and lower chord materials. In addition, it is possible to maintain the horizontal maintenance state with a simple link structure so that it can be carried out safely and smoothly, and a handrail inserted and held in a handrail socket 踏 regardless of the inclination angle of the girder Is supported vertically.

In addition, the slack prevention mechanism prevents the struts inserted into the socket from slacking, and the handrail is always standing up stably.

Brief Description of Drawings

FIG. 1 is a perspective view showing a trap apparatus according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing the adjustment link mounting structure in FIG.

FIG. 3 is a perspective view showing another adjustment link mounting structure according to the present invention.

FIG. 4 is an enlarged longitudinal sectional view showing a tightening structure below the adjustment link in FIG.

Fig. 5 is an enlarged vertical section showing the tightening structure above the adjustment link in Fig. 2. FIG.

FIG. 6 is a side view showing an evening wrap device according to another embodiment of the present invention.

FIG. 7 is a side view showing the assembly structure of the attachment as the hook member in FIG.

FIG. 8 is a side view showing another attachment assembly structure according to the present invention. FIG. 9 is an enlarged side view showing a state in which a handrail post is inserted into the socket.

FIG. 10 is an enlarged plan view of the socket.

Fig. 11 is an enlarged cross-sectional plan view of the socket.

Fig. 12 is a schematic rear view of the evening lap device.

Figure 13 is an enlarged plan view of the tread.

Fig. 14 is a vertical cross-sectional side view taken along line AA in Fig. 13.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described based on illustrated embodiments. FIG. 1 is a perspective view showing the basic configuration of the trapping device of the present invention. This is a girder composed of a pair of upper chord material 1 and lower chord material 2 arranged in parallel, and these girders are set as a pair on the left and right. It consists of things arranged side by side.

In addition, between the left and right upper chord members 1 and 1 and between the lower chord members 2 and 2, a plurality of treads 3 are interposed in the vertical direction and at equal intervals, and these treads 3 are at the end surface portions near the four corners. A horizontal shaft 4 projecting from the upper chord material 1 and the lower chord material 2 is pivotally supported. At the four corners of the uppermost tread 3, a mounting hole 3 for inserting a port for attaching a hook mounting member to be described later is provided.

Further, between the lower ends of the girders made up of the upper chord member 1 and the lower chord member 2 of each pair, a grounding metal 5 is rotatably supported using a horizontal shaft 4 similar to the above. In other words, the lower ends of the upper chord material 1 and the lower chord material 2 are rotatably supported by the grounding metal 5 via the horizontal shafts 4 and 4, respectively. Therefore, the upper chord material 1 and the lower chord material 2 in each pair of left and right girders, the treads 3 and the grounding metal 5 form a plurality of parallelograms as viewed from the side.

For this reason, the upper chord material 1 and the lower chord material 2 are in their longitudinal directions and are opposite to each other, for example, by displacing one upward and the other downward, The tread 3 can change the angle with respect to the upper chord 1 and the lower chord 2 simultaneously.

In other words, no matter how the rising angle of the upper chord material 1 and the lower chord material 2 (that is, the angle of use as the evening lap device) changes, the above-mentioned reverse displacement operation of the upper chord material 1 and the lower chord material 2 Can be adjusted horizontally. For example, handrail support 2 3 (see Fig. 6) is passed through both sides of the second and lowermost treads 3 from the top so that they are perpendicular to them. The bottomed cylindrical socket 3 A is fixed by fastening means such as welding or bolting.

Further, on the outer surface of the upper chord material 1 except the lower end, for example, on the outer surface near the center, as shown in FIG. One end of the adjustment link 7 is supported by these support shafts 6 so as to rotate. The adjustment link 7 has a long hole 8 extending from the center to the other end.

On the other hand, a screw shaft (not shown) protrudes from the outer surface of each lower chord member 2 and below the support shaft 6, and this screw shaft extends into the elongated hole 8 of the adjustment link 7. Furthermore, a wing screw 9 is screwed into the end of the screw shaft. Therefore, the adjustment link 7 can be clamped between the butterfly screw 9 and the lower chord material 2 by screwing the butterfly screw 9 into the screw shaft. As a result, the distance between the upper chord member 1 and the lower chord member 2 is adjusted and held in a state where the tread 3 is horizontal. The screw shaft and thumbscrew 9 are used as position fixing members.

Therefore, when the evening wrap device having such a configuration is transferred from the ground to a building having a different height, the upper chord material 1 and the lower chord material 2 are attached so that each tread 3 always maintains a horizontal state. Operate them so that they are shifted in opposite directions.

Then, after each treadle 3 is in a horizontal state in this way, the relative position or interval of the upper chord material 1 and the lower chord material 2 is locked by tightening the thumbscrew, and this state is stably maintained. As a result, it is possible to safely ascend and descend the worker on the tread 3.

FIG. 3 shows another adjustment link 7 A that can be used in place of the adjustment link Ί. The adjustment link 7 A has one end (above the center). A plurality of small holes 10 are provided over the other end.

Therefore, when setting the distance between the upper chord member 1 and the lower chord member 2, the screw shaft (not shown) protruding from the outer surface of the lower chord member 2 is passed through one of the small holes 10 and then this screw. By screwing the nut 11 into the shaft, the upper chord material 1 and the lower chord material 2 are held by the adjustment link 7A so that the above-mentioned distance becomes the set dimension, as in the case described in the figure.

In order to adjust the distance between the upper chord member 1 and the lower chord member 2 to a predetermined size, the adjustment link 7, the long hole 8 and the thumbscrew 9 and the adjustment link 7 A, the small hole 10 and the nut 1 1 was used, but the same thing as above can be used even if the upper chord material 1 and the lower chord material 2 are connected to a wire or steel rod with an evening buckle (not shown) attached to one end. Aim can be achieved.

FIG. 4 is a cross-sectional view showing details of the tightening structure below the adjustment link 7 to the lower chord member 2 by the thumbscrew 9 shown in FIG. According to this, the port 12 as the screw shaft is a washer made of a knitted material from the inside to the outside in a state where the collar 1 2 a is coated on a part of the outer periphery. It penetrates through 1 3 and 1 4, and further protrudes to the outer surface of the lower chord material 2 through a through hole 15 formed in the lower chord material 2 and a washer 16.

The washer 16 is held by a thin nut 17 screwed into the protruding port 12. Further, the bolt 12 protruding outward from the nut 17 has a pair of toothed washers 1 8 and 1 9 provided on both sides of the adjustment link 7 and a long hole 8 of the adjustment link 7 as shown in the figure. The butterfly nut 9 is screwed into the end of the port 1 2.

According to such a tightening structure, when the butterfly nut 9 is screwed into the port 1 2 by human fingertip operation, the outer link of the lower chord member 2 is caused by the strong frictional contact of the adjustment link 3 with the toothed washers 1 8 and 1 9. Without sliding the adjustment link 7, it can be securely and firmly connected.

Fig. 5 is a cross-sectional view showing the tightening structure above the adjustment link 7 to the upper chord material 1. The difference from the structure shown in Fig. 4 is that the adjustment link 7 is sandwiched from both sides. , 1 9 instead of flat washers 2 0, 2 1 This is the point where a nut is screwed into the end of the port 1 which is the support shaft passing through the small holes 10 0 A of the washers 20 and 21 and the adjustment link Ί.

Since the nut is screwed into the port 1 2 using a wrench or other tightening tool, even if the plain washers 2 0 and 2 1 are used, the adjustment link 7 will not slide against the outer surface of the lower chord member 2 Can be combined.

FIG. 6 shows an embodiment of the present invention provided with a socket. In this embodiment, as shown in FIG. 1, two sockets 3 A and 3 A that are vertically mounted on the side end surfaces of the upper and lower treads 3 are attached to a pair of support rails 2 3 and 2 3 of a handrail 2 2. The lower end is inserted and firmly supported by bolts (not shown).

Both ends of the handrail upper rail 24 and the handrail lower rail 25 are pivotally supported by these bolts 23 in an integrated or rotatable manner with bolts 26. Further, the ends of the upper rail 24 and the handrail lower rail 25 In FIG. 6, both ends of a connecting member 27 are rotatably supported.

In this embodiment, the adjustment link 7 as shown in FIG. 2 is attached between the upper chord member 1 and the lower chord member 2 where the upper and lower chords 3 are supported by the same connecting structure. It has been.

Furthermore, in this embodiment, a horizontal hook mounting member 28 is attached to the lower surface of the uppermost tread 3 using a port 29 and a nut 30 as shown in FIG. An inverted J-shaped hook member 31 as an attachment protruding upward from the front of the uppermost tread 3 is integrally coupled to the hook mounting member 28 by welding or the like.

The port 29 is passed through a mounting hole 3 h formed in the uppermost tread 3 and a mounting hole (not shown) formed in the hook mounting member, and a nut 30 is screwed into the tip.

For example, when the evening wrap device is installed on the ground and an upper floor of a building, the hook member 31 is engaged with a locked member 3 2 such as a locking steel bar or a steel pipe disposed on the upper floor. It can be stopped.

According to this embodiment, for example, the hook member 31 of the evening wrap apparatus having the grounding metal 5 grounded on the ground is engaged with the locking steel bar or the steel pipe provided on the upper floor of the building having a different height. By stopping, the upper part of the trapping device can be easily detached from the upper part of the building. It can be held stably.

Even if the height of the building or work position is different, for example, as shown by the two-dot chain line in Fig. 6, when the evening wrap device is hung over a low building, loosen the thumbscrew 9 and tighten the screw. While moving the shaft upward along the long hole 8, the upper chord material 1 and the lower chord material 2 are shifted in a staggered manner so that each of the treads 3 is leveled so as to narrow the distance between them. After that, by tightening the thumbscrew 9 on the adjustment link 7 side again at this position, the treads 3 can be kept horizontal, and the upper chord material 1 and the lower chord material 2 can be held stably.

At this time, since the tread 3 is held horizontally, the socket 3 A mounted at a right angle stands upright. This (by loosening the port 2 6 attached to the post 2 3 of the handrail 2 2 inserted into the socket 3 A, the upper beam 2 '4 and the lower beam 2 5 supported at both ends are also Always parallel to upper chord 1 and lower chord 2

Therefore, the port 26 is then tightened again, so that the evening lap device is stably supported in a state where the inclination of the upper rail 24 and the lower rail 25 of the handrail 22 is changed.

Fig. 8 shows the L-shaped hook mounting member 2 8 A attached to the uppermost tread 3 using the port 2 9 and nut 30 instead of the horizontal hook mounting member 2 8 of Fig. 7. It is.

Hook mounting member 2 8 A has a locking member 3 4 with a hook 3 3 as an attachment at the top at the top of the hook A 3 4 protrudes in the horizontal direction, and an L-shaped locking piece 3 5 has a protrusion at the bottom. ing.

The hook attachment member 28 A locks the frame 3 7 when the evening wrap device is spanned, for example, between the ground and the frame 3 7 that supports the scaffolding plate 36 of the work walkway. By engaging between the member 3 4, the collar piece 3 3 and the locking piece 3 5 so as to be inserted, it is possible to avoid the risk that the evening lap device will inadvertently leave the work corridor as in the above case. .

9 to 11 show an embodiment in which the socket 3A is provided with a locking mechanism. The loosening prevention mechanism is composed of a pin 3 0 attached to the lower part of the socket 3 A in a diametrical direction and a wedge 3 1 slidably attached to the upper side of the socket 3 A. The support 30 of the handrail 2 2 is supported by the pin 30 and the wedge 3 1 at two points to prevent the support 23 from loosening or tilting.

As shown in FIG. 11, the pin 30 is diametrically installed at the center of the socket 3A.

Reinforcing part 3 2 is projected along the axial direction (vertical direction in FIG. 9) of socket 3 A on the upper side of socket 3 A, and two reinforcing parts 3 2 are provided along the axial direction. Pin insertion holes 3 3 and 3 3 are formed.

Furthermore, a slit 34 for inserting a wedge is formed in the reinforcing portion 32 so as to open in the hollow portion of the socket 3 A in the radial direction (horizontal direction in FIG. 9). The wedge 31 is slidably inserted in the radial direction.

The wedge 31 is composed of a flat plate body 31A and a pair of inclined guide holes 35, 35 extending vertically through the flat plate body 31A.

Guide pins 3 6 and 3 6 inserted axially into the pin holes 3 3 and 3 3 are inserted into the guide holes 3 5 and 3 5 and the flat plate body 3 1 A is slid. When the flat plate body 3 1 A approaches or moves away from the hollow part of the socket 3 A along the holes 3 5 and 3 5 and the guide pins 3 6 and 3 6, the flat plate body 3 1 A The support 2 3 is sandwiched between the side of the socket and the inner periphery of the hollow portion of the socket 3 A.

An upward U-shaped groove 3 7 is formed at the bottom center of the post 2 3, and when this groove 3 7 is inserted into the socket 3 A, the pin 3 0 in the socket 3 A It is fitted to prevent lateral blur. As described above, the post 2 3 is supported by the wedge 31 at the upper side, supported by the pin 30 at the lower side, and supported at two points at the upper and lower sides, thereby preventing the slack and inclination of the post 2 3. 2 2 itself is always stable and stands upright.

Fig. 12 relates to another embodiment of the present invention, in which two lower chord members 2 and 2 in two sets of girders arranged on the left and right sides: a plurality of braces 37 that cross in an X shape are installed, Even if a load such as impact or vibration is applied to each girder from the outside, the lower chord members 2 and 2 are distorted, and the entire trapping device is prevented from being distorted and deformed.

FIG. 13 and FIG. 14 show another embodiment in which a slip prevention mechanism is formed on the surface of the tread plate 3. This is a tread plate 3 formed with a non-slip mechanism consisting of many holes 3 8 and 3 9.

The tread board 3 is composed of a plate body 3 A and reinforcing frames 3 B and 3 C provided at both ends and the center of the plate body 3 A, and the plate body 3 A is raised upward alternately along the vertical and horizontal directions. Holes 3 8 and 3 9 that are recessed or depressed downward are formed. As a result, the lip of the hole 39 raised upward is used as a non-slip portion.

The holes 3 8 and 3 9 are alternately raised or depressed symmetrically in the opposite direction even if they are welded on the reinforcing frames 3 B and 3 C in the reverse direction when formed with the plate body 3 A. The same state is formed. Therefore, by preparing a large number of single plate bodies 3A, it can be connected to the reinforcement frames 3B and 3C regardless of the front and back sides, thereby improving workability, assembly, and economy.

Although the anti-slip mechanism uses the edges of the holes 3 8 and 39, ribs, irregularities, etc. may be formed on the surface of the plate body 3 A, and these may be used as anti-slip portions.

As described above, according to the present invention, both the left and right sets of upper chord material and lower chord material arranged in parallel are pivotally supported at both ends of a plurality of treads so that these treads are horizontal. One of the lower chord members is pivotally supported by one end of an adjustment link that holds the distance between the upper chord material and the lower chord material in an adjustable manner, and the other end side of the adjustment link is fixed at a predetermined length position on the other. Since the position fixing member is provided, the upper chord material and the lower chord material can be positioned relative to each other according to the angle of use (tilt) of the evening lap device. Can always be held horizontally.

In addition, the holding state can be stably held by pressing the adjustment chord toward the lower chord member side, whereby the tread plate can be easily and reliably fixed to the upper chord member and the lower chord member. Therefore, the treadle will not tilt during use. In addition, since the handrail socket for removably inserting the handrail support column is attached to the side edge of the tread plate, the tilt of the upper chord material and lower chord material may change depending on the usage of the evening wrap device. Even in such a case, it is possible to always stand the handrail support vertically with respect to the treads, and the effect that the height of the handrails can be kept constant with respect to each tread is obtained. In addition, according to the present invention, the uppermost step board is integrally provided with the latch for locking the member to be locked, so that the positioning or support of the upper end of the evening lap device with respect to the building or the like is ensured and stable. Therefore, it is possible to avoid the danger that the upper end of the evening wrapping device may slip or change from the wall surface of the building or the like during the use of the evening lap device.

The socket is provided with a support mechanism to prevent the slack of the post, so that the support inserted in the socket is prevented from slacking or tilting. As a result, the handrail can always stand upright stably.

In addition, the tread is provided with a non-slip machine so that the operator who moves up and down on the tread can be prevented from slipping and can be stabilized during the elevating.

In addition, an X-shaped brace is provided between the pair of lower chord members, so that even if an external load is applied, the lower chord member, and thus the evening wrap device as a whole, is prevented from being distorted or deformed.

Claims

The scope of the claims

1. Both ends of multiple treads are pivoted between two pairs of upper and lower chord members arranged in parallel so that these treads are horizontal, and either one of the upper chord or lower chord Is provided with a position fixing member that pivotally supports one end of the adjustment link that holds the distance between the upper chord material and the lower chord material in an adjustable manner, and fixes the other end side of the adjustment link at a predetermined length position on the other side. A handrail socket is installed on the side edge of the tread so that the handrail post can be inserted in a detachable manner upright at a right angle to the side edge to prevent loosening of the pillar in the socket. A trap device that features a mechanism.

2. The evening wrap device according to claim 1, wherein an attachment for locking the member to be locked is integrally provided on the uppermost tread.

3. The trapping device according to claim 1 or 2, wherein an anti-slip mechanism comprising a large number of holes, ribs, or irregularities is formed on the surface of each tread.

4. The trapping device according to claim 1, wherein one or a plurality of braces that cross in an X shape are attached between a pair of lower chord members arranged in parallel.

5. The locking mechanism consists of a pin for mounting in the diametrical direction at the bottom of the socket, and a wedge that is slidably mounted on the upper side of the socket. The evening wrap device according to claim 1, 2, 3 or 4, wherein the side face is tightened laterally with the wedge.

6. The trapping device according to claim 5, wherein a groove that fits into the pin is formed at a lower end of the column.