JP2001139260A - Elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator allowing a deflection stop member to be installed easily and suitable for aerial work. SOLUTION: In an elevator comprising a car moving up and down in a shaft, a guide rail guiding the up and down movement of the car and installed so as to extend in vertical direction, a ma-in rope suspending the car, and a main rope fixing stand fixed to the upper side of the guide rail and stopping the end side of the main cable, a supporting arm extending in the direction crossed perpendicular to the longitudinal direction of the guide rail is provided on the main fixing stand, the main cable is locked to the supporting arm so as to be suspended, and a deflection stop member for applying a stopping force to prevent the guide rail from being deflected by a suspending load applied to the supporting arm is installed on the main cable fixing stand at the portion on the opposite side of the side with respect to the vertical center line of the guide rail where the main cable is locked and on the underside of the supporting arm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator for moving up and down a hoistway, and more particularly to an elevator for preventing a guide rail for guiding the vertical movement of a car from being bent by a suspended load.

[0002]

2. Description of the Related Art Rope wire (main rope) for hanging a car 1
Is fixed to the support arm 4 of the main rope fixing base 3 fixed on the upper side of the guide rail 2 as shown in FIG. Since the support arm 4 extends laterally away from the guide rail 2, the suspension load including the car acts on the guide rail 2 as a bending moment for bending the guide rail 2. When the guide rail 2 bends and bends, the positional relationship between the entrance of the car and the entrance of the floor tends to be out of order, which hinders the operation of the elevator.

In order to prevent the deviation, a reinforcing back plate 5 called a backing is applied to the back of the guide rail 2.
The reinforcing back plate 5 and the guide rail 2 are fixed and reinforced by the rail clip 6. This reinforcement requires a lot of work because it requires many rail clips 6.

[0004] Further, since the interval between the rail brackets 8 for fixing the guide rails 2 to the walls of the hoistway and the hoistway beams 7 is about 3 m, the reinforcing back plate 5 is also long according to the length. Become. By weight, the reinforcing back plate 5 is (50-
Since the weight is about 60 kg, it is not easy to attach the guide rail 2 on the upper side by working at a high place, and there is a problem in the installation work.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide an apparatus which can be easily mounted and is suitable for work at high places.

[0006]

SUMMARY OF THE INVENTION The present invention relates to an elevator in which a main rope or a fixing stand for stopping a main rope for suspending a car is fixed to the guide rail at an upper side, and a lifting load applied to the main rope fixing stand. A deflection preventing member for preventing the guide rail from bending is fixed to a hoistway wall or a hoistway beam.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

First, an outline of an elevator will be described with reference to FIGS.

A hoistway 11 on which the car 10 moves up and down is provided with a vertically running guide rail 2. Guide rail 2
Is for guiding the ascending and descending movement of the car 10 and is fixed by the rail bracket 8 provided on the wall of the hoistway 11 and the hoistway beam 7. The main rope fixing base 3 is attached above the guide rail 2. It is provided higher than the top floor 12. One end of the main rope 1 which is a wire rope is fixed to the support arm 4 of the main rope fixing stand 3. The main rope 1 is hung on two guide cars 13 provided on the bottom side of the car 10, and is attached to a ceiling of the hoistway 11 or a hoistway beam (not shown) provided on the upper end side of the guide rail 2. The hoisting machine 1 mounted on the upper guide wheel (first car) 14 provided and installed at the bottom of the hoistway 11
Hook 5 on the pulley 16. Further, the main rope 1 is hung on an upper guide wheel (second wheel) 17 and then hung on a weight guide wheel 19 of a suspended weight 18 and then stopped on a hoistway beam provided on the ceiling or on the upper end side of the guide rail 2. Thus, the main rope 1 is hung. The car 10 moves up and down the hoistway 11 by the forward / reverse rotation of the hoisting machine 15.

The deflection preventing member 30 is attached to the hoistway beam 7. The bending force receiving portion 31 provided on the lower end side of the bending preventing member 30 is located on the opposite side of the main rope 1 from the vertical center line of the guide rail 2 as a boundary, and is more than the supporting arm 4. It is in contact with the lower part of the main rope fixing base 3 on the lower side.
Accordingly, even if a bending moment to bend the guide rail 2 with an extremely large load including an impact load (1 ton or more) is applied to the support arm 4, the guide rail 2 is bent to the side where the guide rail 2 is likely to bend. 30 bending force receiving portion 31
Abut on the guide rail 2 so that the bending force is canceled and the guide rail 2 is not bent.

As described above, the main rope fixing base 3 is provided with the support arm 4 extending in a direction intersecting with the longitudinal direction of the guide rail 2, and the main arm 1 is engaged with the support arm 4 so as to be suspended.
The support arm 4 is attached to a portion of the main rope fixing base 3 which is opposite to where the main rope 1 is locked and lower than the support arm 4 with respect to the vertical center line of the guide rail 2. The bending of the guide rail 2 can be suppressed by having the bending prevention member 30 that applies a blocking force for preventing the guide rail from bending due to a hanging load applied to the guide rail 2.

The provision of the bending prevention member 30 eliminates the need for the reinforcing back plate 5 for reinforcing the guide rail 2 from the back side, and uses the rail clips 6 to form the guide rail 2.
And the trouble of bolting the reinforcing back plate 5 becomes unnecessary.

Although the deflection preventing member 30 is formed of a steel plate, its weight is about 10 kg (details will be described later), so that it is much lighter than the reinforcing back plate 5 of (50 to 60) kg, and is attached. Work at high places became easier.

FIG. 3 corresponds to an enlarged perspective view of FIG.

A rod suspending member 41 for suspending two suspending rods 40 is provided at the upper end of the guide rail 2. The rod suspension member 41 is attached so as to be fitted to the upper end of the guide rail 2 and is fixed by a rail clip (not shown) or the like so as not to come off.

At the upper end of the suspension rod 40, a nut 42 is provided in two stages as shown in FIG. The suspension rod 40 is suspended and supported by the rod suspension member 41 by the two-stage nut 42. The two nuts 42 are provided to prevent loosening. Also, a split pin 43 is provided to prevent the nut 42 from coming loose and falling off, thus providing double safety.

The aforementioned main rope fixing base 3 is hung below the hanging rod 40.

Although not shown below the suspension rod 40, a two-stage nut is provided in the same manner as the upper side, and the main rope fixing base 3 is suspended from the suspension rod 40. The main rope fixing base 3 is fixed to the guide rail 2 using a rail clip (not shown) or the like. On the support arm 4, three main ropes 1 (or four or five ropes) may be suspended by main rope suspension rods 44. The main rope suspension rod 44 is supported by the support arm 4 via a buffer member 45 formed by a spring or the like. A lock nut 46 is provided on the upper end side of the main rope hanging rod 44 to prevent the main rope hanging rod 44 from falling out of the support arm 4. The main rope suspending rod 44 and the main rope 1 are securely connected by a fastener 47.

The deflection preventing member 30 is formed of a steel plate, and has a locking piece 32 formed at an upper end thereof so as to be bent substantially at a right angle.
At the lower end side. The deflection preventing member 30 has a generally inverted triangular shape as a whole.
Upper width L is about 300mm, Length H is about 500-600m
m, the plate thickness t1 is about (9 to 12) mm,
0 is about 10 kg.

The deflection preventing member 30 is attached to the hoistway beam 7. The hoistway beam 7 is made of a steel material having an H-shaped cross section. The locking piece 32 of the bending prevention member 30 is superimposed on the lower projecting piece of the hoistway beam 7 so as to be placed thereon.
Is fixed to the hoistway beam 7 by welding or bolting. In this fixing work, the bending prevention member 30 is 10 kg, which is much lighter than the conventional reinforcing back plate (50 to 60 kg). In addition, work such as welding can be performed in a state where the locking piece 32 is placed on the hoistway beam 7 and the deflection preventing member 30 is temporarily fixed, so that workability is further improved.

The deflection of the guide rail 2 is controlled by the deflection prevention member 3.
It is accepted and stopped at 0. That is, a portion of the main rope fixing base 3 in which the end face of the bending force receiving portion 31 facing the guide rail 2 is on the opposite side to where the main rope 1 is locked and below the support arm 4. , The guide rail 2 is prevented from bending toward the bending force receiving portion 31. Since the bending prevention member 30 is formed of a plate-like steel material (steel plate) and has an inverted triangular shape, it can sufficiently withstand the strong bending force of the guide rail 2.

Regarding this bending prevention, referring to FIG.
Further explanation will be added.

As shown in FIG. 5, the width W of the base portion of the guide rail 2 is 89 mm, the length H is 62 mm, and the thickness t2 of the side end of the base portion is 8 mm. This dimension is for a so-called 13 kilorail. Thickness t of main rope fixing base 3
3 is 16 mm. The guide rail 2 and the main rope fixing stand 3 are fastened and fixed by rail clips 6, bolts 51 and nuts 52.

Since the thickness of the bending force receiving portion 31 is 9 mm, if the bending force receiving portion 31 is brought into contact with the side end of the base portion of the guide rail 2, the thickness becomes 9 mm to 8 m.
The bending force is received by the contact surface of m. When there is no displacement in the thickness direction on this contact surface,
The receiving of the bending force is performed without any trouble.

However, deviations in the thickness direction occur due to deviations in manufacturing dimensions of the deflection preventing member 30 or variations in the accuracy of the mounting position of the deflection preventing member 30 on the hoistway beam 7, and the contact surfaces come into contact. If the area (overlapping range) is too small, when the bending force is applied, the contact between the bending force receiving portion 31 and the side end of the base portion may fall off. The bending force receiving portion 31 was brought into contact with the side end surface of the main rope fixing base 3 having a sufficient thickness so that the falling-off does not occur. As a result, the dimensions of the deflection preventing member 30 are not properly manufactured, and
Even if there is some variation in the accuracy of the mounting position, the deflection force can be reliably received without falling off.

In another embodiment shown in FIG. 6, the bending preventing member 30 is supported on the hoistway 11 shown in FIG.

The mounting bracket 60 has a mounting piece 61 and a supporting piece 62, and has a horizontally long inverted L-shaped cross section, and is made of steel. The mounting bracket 61 is fixed to the hoistway 11 by fixing the mounting piece 61 with an anchor bolt (not shown) that is driven into the hoistway 11. This mounting bracket 6
The locking piece 32 of the deflection preventing member 30 is placed on the support piece 62 of the first sheet so as to be mounted thereon, and the locking piece 32 is fixed to the support piece 62 by welding or bolting. This construction method is effective when the hoistway beam 11 is not provided in the hoistway 11 or the hoistway beam 7 is not provided where the bending prevention member 30 is attached.

In another embodiment shown in FIG. 7, the bending prevention member 30 is provided with a bending force receiving adjustment bolt 70.

The bending force receiving adjustment bolt 70 is attached by being screwed into the bolt support 71. The bolt support 71 is fixed to the lower side of the bending prevention member 30 by welding or the like. A bending force receiving adjustment bolt 7 is provided on the side end surface of the main rope fixing base 3.
The guide rail 2 is prevented from bending by abutting the leading end of the guide rail 2. By twisting the bending force receiving adjustment bolt 70, the tip of the bending force receiving adjusting bolt 70 can be reliably brought into contact with the side end surface of the main rope fixing base 3.

By attaching to the hoistway beam 7 and the mounting bracket 60 by welding or the like, the deflection preventing member 30 and the main rope fixing base 3 are attached.
Even if there is a deviation in the positional relationship between the main rope fixing base 3 and the front end of the bending force receiving adjustment bolt 70, the distal end of the bending force receiving adjusting bolt 70 can be securely connected to the front end by rotating the bending force receiving adjusting bolt 70 and moving in the front-rear direction. , And the deflection of the guide rail 2 can be effectively prevented.

The diameter of the bending force receiving adjusting bolt 70 is sufficiently larger than the thickness of the bending preventing member 30, so that the contact surface between the side end surface of the main rope fixing stand 3 and the bending force receiving adjusting bolt 70 is fixed to the main rope. Even if the base 3 is slightly displaced in the thickness direction, the contact between the side end surface and the bending force adjusting bolt 70 is sufficiently performed without falling off.

[0032]

As described above, according to the present invention, the work of attaching the bending prevention member for preventing the bending of the guide rail is easy, and the present invention is suitable for work at high places.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an outline of an elevator according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG. 1 according to one embodiment of the present invention.

FIG. 3 is an enlarged perspective view corresponding to FIG. 2;

FIG. 4 is an enlarged perspective view of an end portion of the suspension rod 40 according to the embodiment of the present invention.

FIG. 5 is a cross-sectional view according to an embodiment of the present invention, in which a fastening portion between a guide rail and a main rope fixing base 3 is cross-sectionally illustrated.

FIG. 6 is a cross-sectional view according to another embodiment of the present invention and corresponding to FIG. 3;

FIG. 7 is a perspective view of a bending prevention member according to another embodiment of the present invention.

FIG. 8 is a diagram showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Main rope, 2 ... Guide rail, 3 ... Main rope fixing stand, 11 ...
Hoistway, 30 ... deflection prevention member.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shinichi Seki 832-2, Horiguchi, Hitachinaka-shi, Ibaraki Prefecture Inside Mito Engineering Co., Ltd. Hitachi, Ltd. Elevator Group (72) Inventor Akira Ota 1-6-6 Kanda Nishikicho, Chiyoda-ku, Tokyo F-term in Hitachi Building Systems Co., Ltd. 3F305 BA03 BB02 BB19 BC04

Claims (4)

[Claims] 1. A car for ascending and descending a hoistway, a guide rail for guiding the ascending and descending movement of the car and extending vertically, a main rope for suspending the car, and a guide rail. An elevator fixed to an upper side and having a main rope fixing base for stopping an end side of the main rope, wherein a lifting load applied to the main rope fixing base raises and lowers a bending prevention member for preventing the guide rail from bending. An elevator fixed to a road wall or a hoistway beam. 2. A car for ascending and descending on a hoistway, a guide rail provided to guide the ascending and descending movement of the car and extending vertically, a main rope suspending the car, and a guide rail. An elevator having a main rope fixing base fixed to the upper side and stopping an end side of the main measure, wherein the main rope fixing base is provided with a support arm extending in a direction intersecting a longitudinal direction of the guide rail, Locking the main rope on the support arm so as to hang it, and on the opposite side of where the main rope is locked with respect to the vertical center line of the guide rail,
And, at a portion of the main rope fixing base below the support arm, a bending prevention member that applies a blocking force for preventing the guide rail from bending due to a hanging load applied to the support arm is provided on a wall of the hoistway or vertically. An elevator fixed to a road beam or the like. 3. The hoistway beam according to claim 1, wherein a hoistway beam is provided in the hoistway, and a rail bracket for stopping the guide rail and the blocking member are attached to the hoistway beam. Elevator. 4. A car for ascending and descending the hoistway, a guide rail for guiding the ascending and descending movement of the car and extending vertically, a main rope such as a wire for suspending the car, A main rope fixing stand above the guide rail, an upper guide wheel provided above the hoistway, a hoisting machine provided below the hoistway, and a car guide wheel provided in the car, A weight guide wheel provided on a weight, wherein the main ropes extend over the upper guide wheel, the hoisting machine, the car guide wheel, the weight guide wheel, and one end is fixed above the hoistway. In an elevator having the other end fixed to a main rope fixing stand, a bending preventing member for preventing the guide rail from bending by a hanging load applied to the main rope fixing stand is fixed to a wall of a hoistway or a hoistway beam or the like. Elevator characterized by that Over.