JP2003236003A - Suspension carriage resistant to shock loading - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suspension carriage for suspending a safety belt connected to a worker at high elevations when eventuality occurs to the worker or a temporary construction work member, which carriage can be reduced in the dimensions of wheels and rails while having the function of resistance to an impact load and that of stopping. <P>SOLUTION: A suspension carriage 1 comprises a pair of wheels 2 and 2, a connecting member 3 connecting and supporting the wheels 2 and 2 such that they are freely rotatable, a suspending member 4, to which a rope 10 connected to a safety belt is connected, an elevating member 5 connected to the suspending member 4 and supported by the connecting member 3 to freely rise or fall with respect thereto, and an urging means 6 arranged between the connecting member 3 and the elevating member 5 to urge the elevating member 5 vertically upward so as to keep the same floating from a rail 9 in a normal state. When an impact load is applied to the suspending member 4 vertically downward, the elevating member 5 is lowered to be brought into contact with the rail 9. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention moves along with the movement of a worker working at a high place such as on a gondola or a temporary work member used for work during cleaning or maintenance of an outer wall of a building. The present invention relates to a shock-resistant load suspension vehicle that suspends and supports an operator or a temporary member in the unlikely event that the operator or the temporary member for work occurs.

[0002]

2. Description of the Related Art Workers working at high places such as gondolas and balconies at the time of cleaning or maintenance on the outer wall of a building, etc. When an accident such as a fall of the worker from the gondola or a detachment or breakage of the hanging material that suspends and supports the temporary work member occurs on the pedestal or other temporary work member on which the accompanying materials and equipment are placed. A worker or a temporary work member is hung and supported by a safety belt for preventing the worker from falling, and a rope for supporting the worker or the like is connected to the safety belt.

The upper end of the rope is connected to a suspension vehicle that can travel along a rail provided at a certain height such as an outer wall surface, and freely moves along the rail with the movement of an operator during normal work. On the other hand, to prevent workers from falling,
It is necessary to have a function that can withstand the impact load caused by falling.

Since the conventional suspension vehicle is supported by the rail at two points on the elevation of only a pair of wheels spaced apart in the length direction of the rail, the wheels and the axles themselves can sufficiently withstand the impact load. Since it is necessary to have a diameter and width corresponding to the above, and accordingly the width and height of the rail and the wall thickness, etc., must also have a size corresponding to the dimensions of the wheel, it is necessary to reduce the scale of the suspension vehicle and rail. There is a limit.

For example, when the rail is provided on the outer wall surface of the building, it is required to house the rail so that it is not exposed to the outside as much as possible in view of the appearance of the building, but the rail cannot be made smaller than a certain size. , It may be difficult to hide the rails and it may not be possible to meet the design requirements of the building.

Further, since the suspension vehicle is still supported by the rails at the two points of the wheels even when it receives an impact load, it can be stopped immediately when an operator or the like falls while the suspension vehicle is traveling. Even if the worker or the like can be prevented from falling, it is difficult to avoid the situation where the worker or the like collides with the wall or the like.

From the above background, the present invention proposes a suspension vehicle having a structure capable of reducing the dimensions of the suspension vehicle and the rail while having a function of withstanding an impact load and a function of stopping.

[0008]

According to the present invention, a rope is provided with a connecting member for connecting a pair of wheels rolling on the rail which are paired at a distance in the length direction of a rail provided on a structure. The lifting member connected to the connected hanging member is separated, and the urging means is interposed between the connecting member and the lifting member, and the lifting member is supported by the connecting member so as to be able to move up and down with respect to the connecting member. While keeping the member in a state of being normally floated from the rail, when a vertically downward impact load is applied to the suspension member, the elevating member is lowered and brought into contact with the rail to reduce the load of the wheel against the impact load.

In addition to construction structures such as buildings and civil engineering structures such as bridges, structures are temporarily installed around the construction position of the structure before construction or around the construction being constructed, or assembled. Includes temporary structures. The safety belt is connected to a worker, a gondola on which the worker is mounted, a pedestal on which materials and equipment associated with the work are mounted, and other temporary members for work, and one end of the rope connected to the safety belt is connected to the hanging member.

The suspension vehicle comprises a pair of wheels rotatably supporting a pair of wheels spaced apart in the length direction of the rail, and a connecting member for connecting both wheels, the above-mentioned suspension member and elevating member, and urging means. The elevating member connected to the hanging member is supported by the connecting member so as to be able to move up and down with respect to the connecting member, and is normally kept in a state of being floated from the rail by the biasing means.

During normal times when a live load does not act on the hoisting member, the urging means bears the weight of the hoisting member and the elevating member while urging the elevating member vertically upward so that the elevating member floats from the rail. Keeping the suspension vehicle in contact with the rail only at the wheels, it is placed free to travel on the rail by the wheels and follows the movement of the safety belt.

When an impact load is applied to the suspension member,
The hanging member lowers the elevating member against the restoring force of the biasing means. When the hoist vehicle is moving, the lifting member comes into contact with the rail, and the hoist vehicle is stopped by the frictional force with the rail. If the suspension vehicle is stopped, maintain that state.

The elevating member stops the suspension vehicle by contact with the rails to prevent the operator from falling, and then the suspension vehicle moves freely so that the operator can move the suspension vehicle to a temporary member such as a gondola or a wall. Avoid the situation of collision or the collision of walls with temporary members, and ensure the safety of workers.

When the hoisting member comes into contact with the rail at the wheel and the lifting member when the lifting member comes into contact with the rail, the wheel and the lifting member share the shock load, so that the wheel and the lifting member bear more load than the wheel. The load on the axle is reduced, and it is possible to reduce the dimensions of the wheel and axle, and the entire suspension vehicle.

In particular, when the elevating member descends, the elevating member can share much of the impact load by contacting the rail with a line on the vertical surface when the elevating member descends, so that the load on the wheel and the axle is further increased. It will be reduced. In this case, since the load that can be shared changes depending on the length of the portion where the lifting member contacts the rail, changing the contact length with this rail changes the impact load value that the suspension vehicle can withstand, that is, the safety belt. It is possible to cope with the difference in weight of the temporary work members to be connected.

By reducing the size of the entire suspension vehicle including the wheels, it is possible to reduce the width, height and wall thickness of the rail supporting the suspension vehicle, which reduces the manufacturing cost of the suspension vehicle and the rail. Reduction is achieved. At the same time, since the weight of the suspension vehicle and the rail is also reduced, the size of the bracket for supporting the rail on the skeleton is also reduced, and the burden on the skeleton associated with the installation of the rail is reduced.

Since the space for accommodating the rail is reduced due to the reduced size of the rail, when the rail is provided on the outer wall surface of the building, it is necessary to finish the rail so as not to be exposed to the outside. It will be possible.

Since the connecting member rotatably supports a pair of wheels and connects both wheels, the connecting member is also formed of a single member, but in order to stabilize and support the axle, the connecting member has a solid cross section. When a material is used, it is necessary to secure a space for accommodating the urging means arranged between the connecting member and the elevating member, which may complicate the shape of the connecting member. There is.

Therefore, according to a third aspect of the present invention, the connecting member is separated into a supporting member for rotatably supporting each wheel and a connecting member for connecting and integrating both supporting members, and the urging means is provided between the connecting member and the lifting member. By arranging the urging means, the shape of the connecting member can be simplified and the space for accommodating the urging means can be easily secured.

In this case, since the supporting member is located on both wheels side, the connecting member and the elevating member may be vertically opposed to each other and assembled between the supporting members, and the urging means may be interposed therebetween. Even when a solid cross-section member is used as a support member for supporting the axle, it is easy to secure a space for the biasing means, and the degree of freedom in disposing the biasing means is increased.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION A shock-resistant load suspension vehicle (hereinafter referred to as suspension vehicle) 1 according to the present invention is mounted on a rail 9 at a distance in the longitudinal direction of a rail 9 provided on a structure as shown in FIGS. The wheels 2 and 2 that roll on the wheel, the connecting member 3 that rotatably supports the wheels 2 and connects the wheels 2 and 2, and the rope 10 that is connected to a safety belt connected to workers and the like are connected. Hanging member 4
An elevating member 5 which is connected to the hanging member 4 and is supported by the connecting member 3 so as to be vertically movable with respect to the connecting member 3;
And an elevating member 5, are arranged between the elevating member 5 and the elevating member 5 in a vertically upward direction, and keep the elevating member 5 in a state of being normally floated from the rail 9.
Move along rail 9.

Since the wheels 2 and 2 share the load with the lifting member 5 at the time of impact load, the rail 9 has parallel tracks 91, 91 as shown in FIG. 3 so as not to be affected by the eccentricity due to the impact load. Each wheel 2 has two as shown in FIG.
The tires 21, 21 are connected by an axle 22. The tire 21 includes steel, stainless steel, rubber, resin, and the like.

Since the connecting member 3 supports the wheel 2 so that the wheel 2 can freely rotate and accommodates the biasing means 6 between the wheels 2 and 2, the connecting member 3 is shown in the drawing as a part of each wheel 2. A support member 31, 31 and a connecting member 32 located between the wheels 2 and 2, and a solid cross-section member is used for the support member 31 in order to stably support the axle 22 of the wheel 2. In order to secure a storage space for the urging means 6, a hollow cross-section material having a groove-shaped cross section with an open top is used for the connecting material 32. Since the stability of the axle 22 is also ensured by the sleeve or the like, the entire connecting member 3 may be formed of a continuous hollow section similar to the connecting member 32.

In the drawing, by using a solid cross-section material for the support member 31, the axle member 22 is made to penetrate horizontally as shown in FIG. 2 and is supported by the support member 31 in a fixed state. By supporting the tires 21, 21 rotatably at both ends in the axial direction via bearings 23, the support member 31 rotatably supports the tire 21 constituting the wheel 2. In addition, the support material 31
In some cases, the wheel 2 may be rotatably supported for each axle 22 by interposing a bearing around the axle 22.

When the connecting member 3 is separated into the supporting member 31 and the connecting member 32, the connecting member 32 directly bears the load from the hanging member 4, so that the connecting member 32 is attached to the supporting members 31, 31 on both sides. The support members 31 are rigidly connected so as not to rotate. In the drawing, two screws 33 that penetrate the connecting member 32 itself and each supporting member 31
The two are joined by bolts, pins, etc. Connecting material
As described above, 32 is joined to the support member 31 with the upper side opened.

As shown in FIG. 6, the lower surface of the end of each support member 31 on the traveling side of the suspension vehicle 1 is fixed to the end of the rail 9 when the suspension vehicle 1 is stopped at the end of the rail 9. A pin 31a to be grasped by the catcher 11 that is being held is provided in a protruding manner.

The urging means 6 is housed in a space secured between the connecting member 3 and the elevating member 5 so as to keep the elevating member 5 normally urged vertically upward. In the case shown in the drawing, in order to house the urging means 6 in the space secured inside the connecting member 32, the elevating member 5 also uses a hollow sectional member having a groove-shaped cross section similar to the connecting member 32. Further, the urging means 6 is supported at the lower end by being connected to the connecting member 32 or the like, and is supported at the upper end by being connected to the elevating member 5 or the like. Can be combined.

Although a coil spring is used as the urging means 6 in the drawings, the urging means 6 may be of any shape as long as the restoring force is oriented in the vertical direction. In addition to springs such as springs, rubber or the like is used.

In the illustrated case, bolts 7 and pins for preventing the buckling of the urging means 6 are vertically arranged at the positions where the urging means 6 is arranged, and the lower ends of the bolts 7 and pins are engaged with the connecting member 32 upward. The upper end is locked to the elevating member 5 downward.

The upper end of the bolt 7 is connected to the elevating member 5 by the nut 8 and the lower end thereof is connected to the connecting member 32 so that the elevating member 5 can be lowered with respect to the connecting member 32 by a vertically downward force from the suspending member 4 under impact load. It is in a state where it can freely move downward with respect to. The lower end of the bolt 7 and the like is locked to the connecting member 32 upward, and the upper end is locked to the elevating member 5 downward, so that the lifting member 5 is restrained from being lifted up with respect to the connecting member 32.

The urging means 6 is locked to the connecting member 32 downward at the lower end and to the lifting member 5 at the upper end so as to bear the load of the hanging member 4 and the lifting member 5 in the normal state. The elevating member 5 is biased upward by the restoring force, and the elevating member 5 is floated from the rail 9 to maintain equilibrium, and the suspension vehicle 1 is maintained in a state in which it can freely travel by the wheels 2 and 2.

The urging means 6 contracts or deforms when a vertically downward impact load is applied to the hanging member 4 to lower the elevating member 5 and bring its lower surface into contact with the rail 9. In the illustrated case, the elevating member 5 comes into contact with the rail 9 by a line on the vertical plane as seen in the width direction of the rail 9 shown in FIG. 1 and bears most of the impact load.

When the elevating member 5 descends while the hoisting vehicle 1 is traveling (moving), the hoisting member 5 stops the hoisting vehicle 1 by the frictional force due to the sliding contact with the rail 9 on the lower surface, and the hoisting member 1 is stopped while the hoisting vehicle 1 is stopped. When 5 drops, it continues to be stopped.

The hanging member 4 is a rope 10 connected to a safety belt.
Is connected to the wheel 41 and a shaft portion 42 for transmitting the load from the ring 41 to the lifting member 5, and the shaft portion 42 is used for both wheels 2, 2
In order to apply a load evenly to the lifting member 5, the lifting member 5 is arranged in the central portion on the plane of the lifting member 5 and penetrates the connecting member 32.
The upper end is connected to the elevating member 5 in a state capable of transmitting a downward load. In the drawing, the upper end of the shaft portion 42 is attached to the lifting member 5
In addition, it is simply locked downward.

5 and 6 show the installation situation when the rail 9 is provided at a position spaced from the outer wall 12 of the building. In this case, the rail 9 extends from the seamless frame 16 or the like supported by the frame 13 of the building through the uprights 15 to form a horizontal bracket 14.
Supported by.

Since the outer wall 12 is constructed as a curtain wall in FIG. 5, it is seamlessly installed between the uprights 15 and 15.
The transverse bone 17 is arranged inside the 16 and both ends thereof are joined to the uprights 15 and 15, and the plate 18 is attached to the flange of the transverse bone 17 on the outdoor side.
The base plate 14 a joined to one end of the bracket 14 is joined to the plate 18 by the bolt 19. A rib plate 14b for stiffening is joined to the bracket 14.

In the case of FIG. 5, since the rail 9 is permanently installed outside the building and is a part of the building, here, the bracket 14 and the rail 9 are concealed by the eaves 20 and the cover 21 paired therewith, and Protects from rainwater. The eaves 20 is supported by the blind 16 and the cover 21 is supported by the blind 20 and the blind 16.

FIG. 6 shows the elevation of FIG. 5. A stopper 22 is fixed to the end of the rail 9, and the stopper 22 holds the pin 31a projecting from the supporting member 31 of the suspension vehicle 1 described above. The catcher 11 is attached. The suspension vehicle 1 that has moved to the end of the rail 9 is stopped by the stopper 22 and, at the same time, is held by the catcher 11 and temporarily restrained so as not to move in the opposite direction.

[0039]

The connecting member for connecting a pair of wheels rolling on the rail is separated from the elevating member connected to the suspending member to which the rope is connected, and the urging means is provided between the connecting member and the elevating member. By interposing and supporting the elevating member so that it can be raised and lowered with respect to the connecting member, the elevating member is lifted when a vertically downward impact load is applied to the hanging member while keeping the elevating member normally floating from the rail. Since the member is lowered and brought into contact with the rail, the impact load can be shared between the wheel and the lifting member, and the burden on the wheel and axle is reduced compared to the case where only the wheel bears the load.
In addition, the size of the entire suspension vehicle can be reduced.

Since the size of the entire suspension vehicle including the wheels is reduced, it is possible to reduce the width and height of the rail supporting the suspension vehicle and the dimensions such as the wall thickness, thereby reducing the manufacturing cost of the suspension vehicle and the rail. Reduction is achieved. At the same time, since the weight of the suspension vehicle and the rail is also reduced, the size of the bracket for supporting the rail on the skeleton is also reduced, and the burden on the skeleton associated with the installation of the rail is reduced.

Since the space for accommodating the rail is reduced due to the reduced size of the rail, there is a demand for finishing the rail so that the rail is not exposed to the outside when the rail is installed on the outer wall of a building. It becomes possible to meet.

When an impact load is applied to the suspending member, the suspending member lowers the elevating member, and the elevating member makes contact with the rail to stop the suspending vehicle. A situation in which a worker collides with a temporary member such as a gondola or a wall by moving freely,
Alternatively, a situation where the temporary member collides with the wall or the like can be avoided, and the safety of the worker or the like can be secured.

In the second aspect, when the lifting member descends, the lifting member can share most of the impact load by contacting the rail with the line on the vertical surface, so that the load on the wheel and the axle is further reduced. In this case, since the load that can be shared changes depending on the length of the portion where the lifting member contacts the rail, it is possible to respond to changes in the impact load value that the suspension vehicle can withstand by changing the contact length with this rail. it can.

According to a third aspect of the present invention, the connecting member is divided into a supporting member that rotatably supports each wheel and a connecting member that integrates both supporting members, and the urging means is arranged between the connecting member and the elevating member. The shape of the connecting member is simplified, and it becomes easy to secure a space for storing the biasing means.

Since the support material is located on both wheels,
Since the connecting member and the elevating member are vertically opposed to each other and combined between both supporting members, and the urging means may be interposed between the both,
Even when a solid cross-section member is used as a support member for supporting the axle, it is easy to secure a space for the biasing means, and the degree of freedom in disposing the biasing means is increased.

[Brief description of drawings]

FIG. 1 is an elevational view showing an impact load suspension vehicle.

FIG. 2 is a plan view of FIG.

FIG. 3 is a side view of FIG.

FIG. 4 is a sectional view taken along line xx of FIG.

FIG. 5 is a vertical cross-sectional view showing a case where rails are provided on the outer wall of the building.

FIG. 6 is an elevational view of FIG.

[Explanation of symbols]

1 …… Suspended vehicle for impact resistance load, 2 …… Wheels, 21 …… Tire,
22 …… Axle, 23 …… Bearing, 3 …… Coupling member, 31…
… Supporting material, 31a …… Pin, 32 …… Connecting material, 33 …… Screw,
4 ... Hanging member, 41 ... Ring, 42 ... Shaft part, 5 ... Lifting member, 6 ... Biasing means, 7 ... Bolt, 8 ... Nut, 9 ... Rail, 91 ... Track, 10 …… rope, 11 ……
Catcher, 12 ... Outer wall, 13 ... Body, 14 ... Bracket, 14a ... Base plate, 14b ... Rib plate, 15 ... Upright, 16 ... No eye, 17 ... Side bone, 18 ... Plate , 19 …… bolt, 20 …… eaves, 21 …… cover, 22 ……
Stopper.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yasuhiko Okayama             1-24-18 Arakura, Wako City, Saitama Prefecture F-term (reference) 2E184 LA03 LA07 LB02

Claims (3)

[Claims] 1. A suspension vehicle that travels along a rail provided on a structure, a pair of wheels that are spaced apart in the length direction of the rail, roll on the rail, and each wheel is rotatable. A connecting member that supports and connects both wheels, a suspending member to which a rope is connected, an elevating member that is connected to the suspending member and is supported by the connecting member so as to be able to move up and down with respect to the connecting member, and the connecting member and the elevating member. It is composed of a biasing means that is arranged between the lifting members and vertically biases the lifting members to keep the lifting members floating from the rails in a normal state. Suspended vehicle for impact load that descends and contacts the rail. 2. The suspension vehicle for shock resistant load according to claim 1, wherein the elevating member comes into contact with the rail by a line on the vertical surface when descending. 3. The connecting member is composed of a supporting member for rotatably supporting each wheel and a connecting member for connecting and integrating both supporting members, and the urging means is arranged between the connecting member and the elevating member. The shock-resistant load suspension vehicle according to claim 1 or 2.