JP2023107328A - Moving range restricting bracket and elevator - Google Patents

Abstract

To provide a moving range restricting bracket that can restrict the moving range of a safety hook and facilitate attachment work even to a handrail of an existing elevator, and an elevator.SOLUTION: A moving range restricting bracket 10 has a first engagement portion 11, a second engagement portion 12, and a connecting portion 13. The first engagement portion 11 is detachably engaged with an upper sash bar 7. The second engagement portion 12 is detachably engaged with a pillar 6. The connecting portion 13 connects the first engagement portion 11 and the second engagement portion 12, and forms a closed space together with the upper sash bar 7 and the pillar 6. A safety hook 100 is connected to the sash bar in the closed space formed by the connecting portion 13, the upper sash bar 7 and the pillar 6.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to movement range restriction brackets and elevators.

2. Description of the Related Art Conventionally, when performing maintenance and inspection work on elevators, workers sometimes work while standing on the ceiling, which is the upper part of a car that ascends and descends in a hoistway. Therefore, handrails are installed on the ceiling of the car to ensure the safety of workers. A safety hook fixed to the worker's belt or the like is connected to the handrail to ensure the safety of the worker.

Techniques for connecting the safety hooks include those described in Patent Document 1, for example. Patent Document 1 describes a handrail frame erected on the upper part of a car so as to surround it on all sides, a handrail rail continuously provided on the upper part of the handrail frame and formed in an endless shape so as to surround it on all sides, and a handrail. A technique provided with a guide that is provided on a rail and is movable along an endless handrail rail, and a safety hook connection means that is provided on the guide and allows a worker on the car to connect the safety hook is described. ing.

WO2008/136118

However, in the technique described in Patent Document 1, when the safety hook moves to the intermediate portion of the handrail rail, an excessive load is applied to the handrail rail, so the handrail needs to be strongly formed. Therefore, it is required to limit the movable range of the safety hook to the vicinity of the pillar of the handrail.

Furthermore, in the technique described in Patent Document 1, in order to connect the safety hook, it is necessary to install the handrail rail, the guide, and the safety hook connection means on the handrail in advance, which is difficult to install in the existing elevator. there were.

In consideration of the above problems, this object is to provide a moving range control bracket and an elevator that can limit the moving range of the safety hook and can be easily attached to the handrail of the existing elevator. offer.

In order to solve the above-mentioned problems and achieve the present object, the movement range restricting bracket is detachably attached to a handrail installed on the top of the elevator car. The movement range restriction bracket includes a first engaging portion, a second engaging portion, and a connecting portion. The first engaging portion is detachably engaged with the crosspiece of the handrail. The second engaging portion is detachably engaged with a post of a handrail erected from the top of the car. The connecting portion connects the first engaging portion and the second engaging portion, and forms a closed space together with the beam and the strut. The safety hook is then connected to the rail in the closed space formed by the connecting portion, the rail and the strut.

Further, the elevator is detachably attached with the movement range control bracket described above.

According to the moving range restricting bracket and the elevator configured as described above, it is possible to limit the moving range of the safety hook and to easily perform the attachment work to the handrail of the existing elevator.

It is a perspective view which shows the upper part of the car of the elevator concerning an embodiment. 2A is a perspective view showing an enlarged range A shown in FIG. 1, FIG. 2B is a view of FIG. 2A viewed from B viewpoint, and FIG. 2C is a view of FIG. 2A viewed from C viewpoint. FIG. 2B is a perspective view of the range A shown in FIG. 1 as seen from a direction different from that in FIG. 2A; FIG. 3 is a perspective view showing a movement range restricting bracket according to an embodiment; 5A to 5C are diagrams showing a method of mounting the movement range restricting bracket according to the embodiment. 6A to 6B are diagrams showing a method of attaching the movement range restricting bracket according to the embodiment.

A moving range restricting bracket and an elevator according to embodiments will be described below with reference to FIGS. 1 to 6B. In addition, the same code|symbol is attached|subjected to the member which is common in each figure.

1. Embodiment 1-1. Configuration of Elevator First, the configuration of an elevator according to an embodiment (hereinafter referred to as "this example") will be described with reference to FIG.
FIG. 1 is a perspective view showing the upper part of the elevator car of this example.

An elevator 1 of this example moves up and down in a hoistway formed in a building structure, and has a car 2 for carrying people and luggage. A handrail 4 for upper work is installed on a ceiling part 3 which is an upper part in the vertical direction of the car 2. - 特許庁

The handrail 4 has a plurality of struts 6, an upper crosspiece 7 and a middle crosspiece 8. - 特許庁The strut 6 is formed in a substantially columnar shape. The struts 6 are arranged at the four corners of the ceiling portion 3 of the car 2 . The pillars 6 are erected upward in the vertical direction from the ceiling portion 3 . In addition, you may install the support|pillar 6 in the ceiling part 3 so that folding is possible.

An upper crosspiece 7 is installed at the upper end portion of the support 6 in the vertical direction. The upper beam 7 is arranged parallel to the outer periphery of the ceiling portion 3 of the car 2 and connects two adjacent struts 6 . In addition, a middle crosspiece 8 is installed at an intermediate portion of the support 6 in the vertical direction. Like the upper crosspiece 7, the middle crosspiece 8 is arranged parallel to the outer periphery of the ceiling part 3 of the car 2, and connects two adjacent struts 6 together. The upper crosspiece 7 and the middle crosspiece 8 are formed in a substantially quadrangular prism shape. Here, the inside of the horizontal space surrounded by the upper beams 7 and the middle beams 8, that is, the inside of the handrail 4, is referred to as the outside of the horizontal space surrounded by the upper beams 7 and the middle beams 8, that is, the car. 2 is referred to as the outside of the handrail 4 .

Although an example in which the post 6 is formed in a substantially cylindrical shape and the upper crosspiece 7 and the middle crosspiece 8 are formed in a substantially quadrangular prism shape has been described, the present invention is not limited to this. For example, the strut 6 may be formed in a substantially square pole shape, and the upper crosspiece 7 and the middle crosspiece 8 may be formed in a substantially cylindrical shape. Also, as the crosspieces provided on the handrail 4, an example of providing two crosspieces, the upper crosspiece 7 and the middle crosspiece 8, has been described, but the present invention is not limited to this, and three or more crosspieces may be provided.

Further, a movement-range restricting bracket 10 is attached to a corner portion of the handrail 4 where the support 6 and the upper crosspiece 7 are connected.

1-2. Configuration Example of Movement Range Restriction Bracket Next, the movement range restriction bracket 10 will be described with reference to FIGS. 2A to 4 .
2A is a perspective view showing an enlarged range A shown in FIG. 1, FIG. 2B is a view of FIG. 2A viewed from B viewpoint, and FIG. 2C is a view of FIG. 2A viewed from C viewpoint. FIG. 3 is a perspective view of the area A shown in FIG. 1 viewed from a direction different from that in FIG. 2A. FIG. 4 is a perspective view showing the movement range restricting bracket 10. FIG.

As shown in FIGS. 2A to 4 , the movement range restricting bracket 10 has a first engaging portion 11 , a second engaging portion 12 and a connecting portion 13 . Further, as shown in FIGS. 2A to 3, the movement range restricting bracket 10 has a jack bolt 15 and a nut 16. As shown in FIG.

As shown in FIG. 4 , the first engaging portion 11 is formed at one longitudinal end portion of the connecting portion 13 . The first engaging portion 11 is formed in a substantially U-shape to match the shape of the upper rail 7 . The first engaging portion 11 has a first surface portion 17 , a second surface portion 18 and a third surface portion 19 . The first surface portion 17, the second surface portion 18 and the third surface portion 19 are formed in a substantially flat plate shape. The first surface portion 17 and the second surface portion 18 are substantially parallel to the horizontal direction, and the third surface portion 19 is substantially parallel to the vertical direction orthogonal to the horizontal direction. The second surface portion 18 is positioned above the first surface portion 17 in the vertical direction, and the first surface portion 17 and the second surface portion 18 face each other with a space therebetween in the vertical direction.

A through hole 17 a through which the jack bolt 15 is inserted is formed in the first surface portion 17 . A nut 16 (see FIGS. 2C and 3) is arranged on one surface of the first surface portion 17 facing the second surface portion 18 . The nut 16 is arranged at a position where the through hole 17a is provided on the first surface portion 17 . Note that the nut 16 may be fixed to the first surface portion 17 in advance by welding.

A third surface portion 19 is connected substantially perpendicularly to one end of the first surface portion 17 . The third surface portion 19 is connected to one end of the second surface portion 18 . One end side of the first surface portion 17 and the second surface portion 18 in the first engaging portion 11 is closed by the third surface portion 19, and the other end side of the first surface portion 17 and the second surface portion 18 is is open.

As shown in FIGS. 2A to 3 , the first engaging portion 11 is detachably engaged with the upper rail 7 from the inside of the handrail 4 . Also, the first engaging portion 11 is held on the upper crosspiece 7 by a jack bolt 15 and a nut 16 . Although an example in which the first engaging portion 11 is attached to the upper crosspiece 7 has been described, the present invention is not limited to this, and the first engaging portion 11 may be attached to the middle crosspiece 8 .

Also, although an example in which the first engaging portion 11 is formed in a substantially U-shape in accordance with the shape of the upper crosspiece 7 has been described, the present invention is not limited to this. For example, when the upper rail 7 is formed in a substantially cylindrical shape, the first engaging portion 11 may be formed in a shape in which a part of the cylinder is cut out, that is, in a substantially C shape. Various other shapes may be used as long as they are shapes that can be engaged with.

As shown in FIG. 4 , one longitudinal end of the connecting portion 13 is connected to the other end of the first surface portion 17 of the first engaging portion 11 . The connecting portion 13 is formed in a substantially flat plate shape. Since the connecting portion 13 is formed in a flat plate shape, the strength of the connecting portion 13 appears to be lower than that of the strut 6 and the upper crosspiece 7 . It should be noted that the strength of the connecting portion 13 is actually lower than the strength of the strut 6 and the upper crosspiece 7 . In addition, the connecting portion 13 obliquely extends downward in the vertical direction from the first surface portion 17 . A second engaging portion 12 is formed at the other end portion of the connecting portion 13 in the longitudinal direction, that is, the lower portion in the vertical direction.

The second engaging portion 12 is bent substantially vertically in the horizontal direction from the other end of the connecting portion 13 . The second engaging portion 12 is formed in a substantially flat plate shape, and the surface thereof is arranged substantially parallel to the vertical direction. The direction in which the surface of the second engaging portion 12 faces is different from the direction in which the third surface portion 19 of the first engaging portion 11 faces.

Further, the second engaging portion 12 may be formed in a shape in which a part of the cylinder is notched, that is, in a substantially C shape, in accordance with the shape of the substantially cylindrical support 6 . may be of any other shape as long as it can be engaged with the post of the handrail 4 .

As shown in FIGS. 2A to 3, the second engaging portion 12 is detachably engaged with the post 6 from the outside of the handrail 4. As shown in FIGS. The closed surfaces of the first engaging portion 11 and the second engaging portion 12 face different directions. Therefore, the movement range restricting bracket 10 is attached to the handrail 4 so that the handrail 4 is sandwiched between the first engaging portion 11 and the second engaging portion 12 . As a result, it is possible to prevent the moving range restricting bracket 10 from coming off the handrail 4 .

By attaching the moving range regulating bracket 10 to the handrail 4, the connecting part 13 of the moving range regulating bracket 10 is arranged so as to obliquely connect the column 6 and the upper beam 7 of the handrail 4. - 特許庁Then, as shown in FIG. 2B, a closed space Q1 surrounded by the connecting portion 13, the strut 6, and the upper crosspiece 7 is formed. Then, as shown in FIG. 2A, the operator connects the safety hook 100 to the upper crosspiece 7 in the closed space Q1 surrounded by the connecting portion 13, the strut 6, and the upper crosspiece 7. As shown in FIG. Thus, the safety hook 100 is attached not to the middle portion of the upper crosspiece 7 but to the vicinity of the post 6 having higher strength than the middle portion. As a result, it is possible to secure the strength when the worker falls from the car 2, and it is not necessary to form the upper crosspiece 7 of the handrail 4 firmly.

Here, the safety hook 100 has lower strength when connected horizontally than vertically. And when the safety hook 100 is attached to the support|pillar 6 in the closed space Q1, the safety hook 100 will be connected with the handrail 4 sideways with comparatively weak strength. On the other hand, in the movement range restricting bracket 10 of this example, the second engaging portion 12 is not provided with the jack bolt 15 and the nut 16 unlike the first engaging portion 11 . Therefore, the strength of the vicinity of the second engaging portion 12 appears to the operator to be lower than that of the first engaging portion 11 and the upper crosspiece 7 . As a result, the operator can be urged to connect the safety hook 100 to the side of the upper rail 7 in the closed space Q1, that is, vertically.

Furthermore, the connecting part 13 looks weaker than the strut 6 and the upper crosspiece 7 . Therefore, the connecting portion 13 appears to the operator to be weaker than the strut 6 and the upper crosspiece 7 . As a result, the operator can be urged to correctly attach the safety hook 100 to the upper crosspiece 7 having high strength instead of the connecting portion 13 having low strength. As described above, according to the movement range restricting bracket 10 of the present example, it is possible to urge the operator to correctly connect the safety hook 100 in the correct orientation and position. It is possible to prevent mistakes in connecting 100.

Also, when the safety hook 100 moves away from the post 6 , the safety hook 100 comes into contact with the movement range restriction bracket 10 . As a result, the movement range of the safety hook 100 can be restricted to the vicinity of the strut 6 having a high strength, that is, the movement to the middle part of the upper rail 7 having a relatively low strength can be restricted, thereby enhancing work safety. can be done. Furthermore, the horizontal load applied to the movement range restricting bracket 10 is transmitted to the post 6 via the second engaging portion 12 of the movement range restricting bracket 10 . Therefore, the safety of the operator can be ensured without firmly attaching the movement-range restricting bracket 10 to the handrail 4 .

Furthermore, as shown in FIG. 1, the movement range restricting bracket 10 is attached between the two struts 6. As shown in FIG. As a result, even if the movement range restricting bracket 10 is detached from the handrail 4, the safety hook 100 is positioned between the two posts 6, so that the safety hook 100 can be prevented from being detached from the handrail 4.例文帳に追加

2. Method for Attaching Movement Range Restricting Bracket 10 Next, a method for attaching the movement range restricting bracket 10 having the above-described configuration will be described with reference to FIGS. 5A to 6B.
5A to 6B are explanatory diagrams showing a method of attaching the movement range restricting bracket 10. FIG.

First, as shown in FIGS. 5A and 6A , the first engaging portion 11 is brought close to the handrail 4 from the inside, and the first engaging portion 11 is pulled from the opening facing the third surface portion 19 in the first engaging portion 11 . 11 is fitted into the upper crosspiece 7. At this time, the second surface portion 18 of the first engaging portion 11 faces the upper surface portion of the upper rail 7 in the vertical direction, and the third surface portion 19 faces the inner surface portion of the upper rail 7 in the horizontal direction. Next, the movement range restricting bracket 10 is rotated to engage the second engaging portion 12 with the post 6 from the outside of the handrail 4 .

Next, as shown in FIGS. 5B and 6B, the second surface portion 18 of the first engaging portion 11 is overlapped with the upper surface portion of the upper rail 7 to engage the first engaging portion 11 with the upper rail 7. . Thereby, as shown in FIG. 5C , the first surface portion 17 of the first engaging portion 11 faces the lower surface portion of the upper crosspiece 7 in the vertical direction. Then, as shown in FIGS. 2C and 3 , the first engaging portion 11 is fastened and fixed to the upper beam 7 using the jack bolt 15 and the nut 16 . This completes the mounting work of the movement range restricting bracket 10 .

Here, as described above, the load applied to the movement range restricting bracket 10 is transmitted to the strut 6, and a large load does not act on the movement range restricting bracket 10. Further, the moving range restricting bracket 10 has different engaging directions at the first engaging portion 11 and the second engaging portion 12, and is attached so as to sandwich the handrail 4 therebetween. Therefore, it is possible to prevent the moving range restricting bracket 10 from coming off against the operator's intention, and the first engaging portion 11 does not have to be fastened and fixed to the upper rail 7 with the jack bolt 15 or the nut 16 .

By using the jack bolts 15 and the nuts 16 for fastening and fixing, it is possible to prevent the moving range restricting bracket 10 from coming off the handrail 4 even when the handrail 4 is folded.

In this manner, the movement range restricting bracket 10 of this example is attached to the handrail 4 by engaging the first engaging portion 11 and the second engaging portion 12 without performing complicated work such as welding. As a result, it is possible to easily attach the movement range restricting bracket 10 .

Furthermore, the movement range restriction bracket 10 can be attached without processing the handrail 4. - 特許庁Therefore, the moving range restricting bracket 10 can be attached to the handrail of an existing elevator.

When removing the movement range restricting bracket 10 from the handrail 4 , the jack bolt 15 is first removed from the first engaging portion 11 . Then, in order to release the engagement between the first engaging portion 11 and the second engaging portion 12, the movement range restricting bracket 10 is rotated. As a result, the movement range restricting bracket 10 is removed from the handrail 4 . Thus, according to the movement range restricting bracket 10 of the present example, the removal work can be easily performed.

The present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the gist of the invention described in the claims.

Further, in the above-described embodiment, the first engaging portion 11 engages with the handrail 4 from the inside, and the second engaging portion 12 engages with the handrail 4 from the outside. not to be For example, the first engaging portion 11 may be engaged from the outside of the handrail 4 and the second engaging portion 12 may be engaged from the inside of the handrail 4 . When engaging the first engaging portion 11 from the outside of the handrail 4 , the connecting portion 13 is arranged inside the handrail 4 rather than the first surface portion 17 of the first engaging portion 11 . Therefore, when the jack bolt 15 is inserted into the through hole 17 a of the first surface portion 17 , the hand of the operator is hidden by the connecting portion 13 . Therefore, it is preferable to engage the first engaging portion 11 from the inside of the handrail 4 .

Moreover, the direction in which the first engaging portion 11 and the second engaging portion 12 are engaged may be the same. This makes the mounting work even easier. However, from the viewpoint of preventing the moving range restricting bracket 10 from coming off, it is preferable that the first engaging portion 11 and the second engaging portion 12 engage with the handrail 4 in different directions.

In this specification, words such as "parallel" and "perpendicular" are used, but these do not strictly mean only "parallel" and "perpendicular", but include "parallel" and "perpendicular". Furthermore, it may be in a "substantially parallel" or "substantially orthogonal" state within the range where the function can be exhibited.

DESCRIPTION OF SYMBOLS 1... Elevator 2... Car 3... Ceiling part 4... Handrail 6... Post 7... Upper crosspiece (crosspiece) 8... Middle crosspiece 10... Movement range control bracket 11... First engaging part, DESCRIPTION OF SYMBOLS 12... 2nd engaging part 13... Connection part 15... Jack bolt 16... Nut 17... First surface part 17a... Through hole 18... Second surface part 19... Third surface part 100... Safety hook, Q1... Closed space

Claims (7)

In the movement range control bracket that is detachably attached to the handrail installed on the top of the elevator car,
a first engaging portion detachably engaged with the crosspiece of the handrail;
a second engaging portion detachably engaged with a post of the handrail erected from the top of the car;
a connecting portion that connects the first engaging portion and the second engaging portion and forms a closed space together with the crosspiece and the strut;
A safety hook is connected to the crosspiece in the closed space formed by the connecting portion, the crosspiece, and the strut. The movement range regulating bracket according to claim 1, wherein a direction in which the first engaging portion engages with the beam and a direction in which the second engaging portion engages with the strut are different. The first engaging portion engages with the crosspiece from the inside of the handrail,
The movement range regulating bracket according to claim 2, wherein the second engaging portion engages with the post from the outside of the handrail. The movement range regulating bracket according to claim 1, further comprising a jack bolt that fastens and fixes the first engaging portion to the crosspiece. The movement range regulating bracket according to claim 1, wherein the strength of the connecting portion is set lower than the strength of the crosspiece and the strut. A car that ascends and descends in a hoistway formed in a building structure;
A handrail installed on the upper part of the car;
a movement range restriction bracket detachably attached to the handrail,
The movement range restriction bracket is
a first engaging portion detachably engaged with the crosspiece of the handrail;
a second engaging portion detachably engaged with a post of the handrail erected from the upper part of the car;
a connecting portion that connects the first engaging portion and the second engaging portion and forms a closed space together with the crosspiece and the strut;
A safety hook is connected to the rail in the closed space formed by the connecting portion, the rail and the strut. The struts are arranged at the four corners of the upper part of the car,
The crosspieces connect the struts arranged at the four corners,
7. The elevator according to claim 6, wherein said travel range restricting bracket is arranged between two said pillars.

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