JP2023133734A - Main cable fixing device for elevator - Google Patents

Abstract

To provide a main cable fixing device for an elevator capable of reducing the weight of a rope holding metal and improving workability even if the weight of a car is large.SOLUTION: A main cable fixing device 13 for an elevator includes: vertical frames standing at both sides of a car to support the car; a pair of upper beams 12 mutually connecting upper parts of the vertical frames and having opposite surfaces along a horizontal direction; and a rope holding metal unit 15 mounted with a rope holding part 14 of a main cable 5 for suspending the car and supporting the load acting on the rope holding part 14. A plurality of rope holding metal units 15 are arranged between the pair of upper beams 12 and connected with at least one main cable 5. The rope holding metal unit includes: a fixed surface fixed between the pair of upper beams 12, a mounting surface provided to face the fixed surface and mounted with the rope holding part 14; a support part for connecting the fixed surface and the mounting surface and supporting the load acting on the mounting surface in the vertical direction through the rope holding part 14; and a hollow part surrounded by the fixed surface, the mounting surface, and the support part.SELECTED DRAWING: Figure 5

Description

The present invention relates to an elevator fixing device for fixing a main rope for suspending a car to an upper frame of the car.

In a conventional main fixing device installed on the upper frame of an elevator car frame, a rope stop is attached to the end of the main rope, and the main rope is attached to the rope stop via the rope stop. There is. Since the main rope is usually composed of a plurality of ropes, a plurality of clasps are arranged on the clasp. That is, since a plurality of rope clasps are arranged on a horizontal plane, a steel plate (flat plate) having a predetermined width on a horizontal plane is used for the rope clasp. Furthermore, since the load that is applied when hanging the car from the main rope is constantly applied to the rope clasp, it is necessary to ensure the strength to withstand this load. Therefore, when the weight of the car is large, strength is ensured by increasing the thickness of the rope clasp. (For example, see Patent Document 1).

Patent No. 4994711

When the weight of the car is large, for example, a predetermined strength can be ensured by setting the plate thickness of the leash to about 30 mm. However, the weight of this rope clasp is approximately 80 kg, which is too heavy for a single worker to carry, which poses a problem in that workability deteriorates. Furthermore, since the shapes of the rope clasps vary depending on the number of main ropes, there is a problem in that the number of types of rope clasps increases.

This invention was made to solve the above-mentioned problems, and its purpose is to reduce the weight of the rope clasp and improve workability even when the weight of the car is large. The main purpose of the elevator is to provide a fixing device. Another object of the present invention is to provide a main fixing device for an elevator that can reduce the number of types of clasps depending on the number of main ropes.

The main fixing device for an elevator according to the present invention includes a vertical frame that stands upright on both sides of a car and supports the car, a pair of upper beams that connect the upper parts of the vertical frames and have opposing surfaces along the horizontal direction, and a vertical frame that supports the car. In the main fixing device for an elevator, which has a rope anchorage unit that supports the load acting on the anchorage portion of the main rope to be suspended, and a rope anchorage unit that supports the load acting on the anchorage portion, the rope anchorage unit is installed between the pair of upper beams. A fixed surface arranged in plurality and connected to at least one main beam and fixed between a pair of upper beams, a mounting surface provided opposite to the fixed surface and to which a rope stopper is attached, and a fixed surface. a support part that connects the and the mounting surface and supports a load acting vertically on the mounting surface via the rope stopper, and a hollow part formed surrounded by the fixing surface, the mounting surface, and the support part; It is characterized by having the following.

The present invention can realize a main fixing device for an elevator that can reduce the weight of the rope clasp and improve workability even when the weight of the car is large. Furthermore, it is possible to realize an elevator main fixing device that can reduce the number of types of clasps depending on the number of main ropes.

1 is a front view showing a 1:1 roping elevator according to Embodiment 1 of the present invention. FIG. FIG. 2 is a front view showing the main fixing device (overall) of the elevator of FIG. 1 according to Embodiment 1 of the present invention. FIG. 3 is a perspective view, seen diagonally from above, showing essential parts of the main fixing device for the elevator of FIG. 2 according to Embodiment 1 of the present invention. FIG. 3 is a perspective view, seen diagonally from below, showing essential parts of the main fixing device for the elevator of FIG. 2 according to Embodiment 1 of the present invention. FIG. 3 is a front view (enlarged view) showing a main part of the main fixing device for the elevator of FIG. 2 according to Embodiment 1 of the present invention. FIG. 6 is a side view of the main fixing device for the elevator of FIG. 5 according to Embodiment 1 of the present invention. FIG. 6 is a plan view from below of the main fixing device of the elevator of FIG. 5 according to Embodiment 1 of the present invention. FIG. 8 is a perspective view of the rope clasp unit of FIG. 7 according to Embodiment 1 of the present invention, viewed diagonally from above. FIG. 9 is a perspective view of the rope clasp unit of FIG. 8 according to Embodiment 1 of the present invention, viewed diagonally from below. It is a side view (enlarged view) which shows the principal part of the main fixing device of the elevator according to Embodiment 2 of this invention. FIG. 11 is a plan view from below of the elevator main fixing device of FIG. 10 according to Embodiment 2 of the present invention. FIG. 12 is a perspective view of the rope clasp unit of FIG. 11 according to Embodiment 2 of the present invention, viewed diagonally from above. FIG. 13 is a perspective view of the rope clasp unit of FIG. 12 according to Embodiment 2 of the present invention, viewed diagonally from below.

Embodiment 1.
FIG. 1 is a front view showing a 1:1 roping elevator according to Embodiment 1 of the present invention. FIG. 2 is a front view showing the main fixing device (overall) of the elevator of FIG. 1 according to Embodiment 1 of the present invention. FIG. 3 is a perspective view of a principal part of the main fixing device for the elevator of FIG. 2 according to Embodiment 1 of the present invention, viewed diagonally from above. FIG. 4 is a perspective view, seen diagonally from below, showing essential parts of the main fixing device for the elevator of FIG. 2 according to Embodiment 1 of the present invention. FIG. 5 is a front view (enlarged view) showing a main part of the main fixing device for the elevator of FIG. 2 according to the first embodiment of the present invention. FIG. 6 is a side view showing a main part of the main fixing device for the elevator of FIG. 5 according to the first embodiment of the present invention. FIG. 7 is a plan view from below showing essential parts of the main fixing device for the elevator of FIG. 5 according to Embodiment 1 of the present invention. FIG. 8 is a perspective view of the rope clasp unit of FIG. 7 according to Embodiment 1 of the present invention, viewed obliquely from above. FIG. 9 is a perspective view of the rope clasp unit of FIG. 8 according to Embodiment 1 of the present invention, viewed diagonally from below.

In the figure, a machine room 2 is provided above a hoistway 1. The machine room 2 is provided with a hoist 3 and a deflection wheel 4. A plurality of main ropes 5 as main ropes are wound around the sheave and deflection wheel 4 of the hoist 3. A car 6 and a counterweight 7 are suspended from the main rope 5. The car 6 and the counterweight 7 are moved up and down in the hoistway 1 by the driving force of the hoist 3.

The car 6 has a car frame 8 and a car main body 9 supported by the car frame 8. The car frame 8 includes a pair of vertical frames 10, a lower frame 11 provided between the lower ends of the pair of vertical frames 10, and a pair of upper beams 12 provided between the upper ends of the pair of vertical frames 10. It is composed of. Further, the car 6 is connected to one end of the main rope 5 via a main fixing device 13 provided on the upper beam 12. The counterweight 7 is connected to the other end of the main rope 5 via a rope stop (not shown) provided on the top of the counterweight 7.

The main fixing device 13 includes a latch part 14 that connects the end of the main rope 5, and a plurality of latch units 15 that are fixed to the lower surface of the upper beam 12 and to which the latch parts 14 are attached. There is. The rope stopper 14 has a shackle rod 16 to which the end of the main rope 5 is connected at the upper part, and a shackle spring 17 surrounding the lower part of the shackle rod 16. The shackle rod 16 is arranged to vertically penetrate the rope clasp unit 15, and one shackle rod 16 is arranged for one rope clasp unit 15.

The clasp unit 15 is formed by bending one flat plate several times and welding the ends, and is formed into a hollow pipe shape extending in the longitudinal direction. The rope latching unit 15 has a fixing surface 18 (top surface) that has both ends fixed to the lower end surfaces of the pair of upper beams 12, and a mounting surface that is provided opposite the fixing surface 18 and to which the rope latching section 14 is attached. A support part that connects the surface 19 (lower surface part), the fixed surface 18 and the mounting surface 19 on both sides in the longitudinal direction, and supports the load acting in the vertical direction on the rope clasp unit 15 via the rope clasp part 14. 20 (both side parts), and is formed of a total of four sides.

A hollow portion 21 is provided inside the rope clasp unit 15 and is surrounded by a fixing surface 18, a mounting surface 19, and a support portion 20. The hollow portion 21 corresponds to the inside of the pipe shape, and the shackle rod 16 is disposed vertically therethrough. The rope clasp unit 15 has a longitudinal direction extending along a horizontal plane between a pair of upper beams 12 and both ends thereof are respectively fixed, and a total of four units are arranged adjacent to each other in the longitudinal direction. The shackle portion 14 is attached to the mounting surface 19 of the shackle unit 15, and the shackle rod 16 passes through the shackle unit 15 and the hollow portion 21 and is arranged to be vertically movable.

Bolt holes 23 through which the bolts 22 pass are provided near both ends of the fixing surface 18, and bolt holes 24 through which the bolts 22 pass through the lower surface of the upper beam 12. Both ends of the fixing surfaces 18 are disposed in contact with the lower ends of the pair of upper beams 12, and the bolts 22 are disposed to pass through the bolt holes 23 and 24. It is fixed to the lower end of the beam 12.

The fixing surface 18 and the mounting surface 19 of the rope clasp unit 15 are each provided with mounting holes 25 into which the shackle rods 16 which are arranged to pass through in the vertical direction are inserted. The attachment surface 19 of the leash unit 15 is provided with a leash portion 14 that extends vertically through the attachment hole 25 and supports the end of one main rope 5. That is, the ends of a total of four main ropes 5 are connected to the mounting surface 19 of the main fixing device 13.

One attachment hole 25 is arranged for one rope clasp unit 15. Furthermore, when the four rope latching units 15 are fixed to the lower end of the upper beam 12, the mounting holes 25 are arranged not on the same side of the pair of upper beams 12 but on the adjacent side when viewed from the vertical direction. They are formed so as to be alternately arranged on the opposite side of the upper beam 12 with respect to the position of the holes 25.

That is, the rope stopper 14 that is disposed through the attachment hole 25 is not located on the same side of the pair of upper beams 12 when viewed from the vertical direction, but on the side of the upper beam 12 with respect to the position of the adjacent rope stopper 14. It is placed on the opposite side. Here, since the shape of the shackle rod 16 and shackle spring 17 arranged in the rope stop part 14 is wider than the main rope 5, if the rope stop part 14 is arranged close to each other, they may interfere with each other. . Therefore, by arranging the locking portions 14 in this manner, the distance between adjacent locking portions 14 becomes large, and interference between the locking portions 14 disposed on the mounting surface 19 can be avoided.

Furthermore, a vertical load is applied to the rope latch unit 15 from the end of the main rope 5 via the rope latch 14 . At this time, since the point of application of this load (the latch portion 14) is close to the upper beam 12, most of this load is received by the upper beam 12 via the latch unit 15. That is, since the load acting on the center portion of the leash unit 15 is reduced, the required rigidity of the leash unit 15 is lower than when the leash portion 14 is disposed in the center portion of the leash unit 15. be able to.

A slope 26 is formed near the bolt hole 23 of the support part 20 so that the support part 20 becomes lower in the vertical direction from the mounting surface 19 toward the fixed surface 18. Due to this slope 26, when the rope clasp unit 15 is fixed to the pair of upper beams 12, the distance until the bolt 22 passing through the bolt hole 23 is exposed from both ends of the rope clasp unit 15 is shortened. This makes fixing work easier.

The size of the rope clasp unit 15 in Example 1 is made of a steel plate with a pipe shape of 75 mm x 75 mm on one side, 466 mm in length in the longitudinal direction, and 6 mm in thickness. Each rope clasp unit 15 weighs 11 kg, and the total weight of the four units is 44 kg.

Next, the operation of the first embodiment configured as described above will be explained. When the car 6 moves up and down, a load acts on the latch unit 15 from the main rope 5 via the latch part 14. This load is received by the pair of upper beams 12 via the rope latch unit 15. Here, while the conventional rope clasp has an integral shape of a steel plate (plate thickness: about 30 mm, weight: about 80 kg), the rope clasp unit 15 has a unit configuration. Therefore, the minimum structural unit is one unit (plate thickness is approximately 6 mm, weight is approximately 11 kg), and the overall weight (approximately 11 kg x 4 units = approximately 44 kg) is approximately 1/2 compared to the conventional one.

In addition, since the minimum structural unit of the rope clasp is the rope clasp unit 15 (1 unit), the weight (approximately 11 kg) is enough for one worker to assemble at the elevator assembly site, improving work efficiency. Improved.

In addition, in conventional rope clasps, the number of main ropes 5 differs depending on the weight of the car, so it is necessary to match the plate thickness and size, and many types of rope clasps are required. Therefore, in the main fixing device 13, the minimum constituent unit of the leash is the leash unit 15 (one unit), so even if the number of main ropes 5 is different, the leash can be fixed as necessary. It can be easily adjusted by simply increasing or decreasing the number of gold units 15. Therefore, it is possible to reduce the number of types of leashes.

Furthermore, in the conventional rope clasp, the load of the entire main rope acts, whereas in the main fixing device 13, four rope clasp units 15 are arranged for the four main ropes 5. The load acting on one rope clasp unit 15 is reduced to 1/4 compared to the conventional one. Furthermore, since most of the load acting on the rope clasp unit 15 is received by the pair of upper beams 12 via the support portion 20, the strength of the fixing surface 18 and the mounting surface 19 can be significantly reduced compared to the conventional method. . As a result, the rope clasp unit 15 can be formed into a hollow shape formed by the fixing surface 18, the mounting surface 19, and the support portion 20, so there is no need to increase the thickness of the steel plate (solid shape) as in the conventional case. .

As described above, according to the first embodiment, there is a vertical frame 10 that stands upright on both sides of the car 6 and supports the car 6, and a pair of vertical frames 10 that connect the upper parts of the vertical frames 10 to each other and have opposing surfaces along the horizontal direction. In the main fixing device 13 of an elevator, the main fixing device 13 of an elevator has a beam 12 and a rope anchorage unit 15 to which the anchorage portion 14 of the main rope 5 for suspending the car 6 is attached and which supports the load acting on the anchorage portion 14. , a plurality of rope clasp units 15 are arranged between the pair of upper beams 12, and are connected to at least one main beam 5, and have a fixing surface 18 fixed between the pair of upper beams 12, and a fixing surface. A mounting surface 19 that is provided opposite to the rope stopper 18 and to which the locking part 14 is attached connects the fixing surface 18 and the mounting surface 19, and also prevents loads acting vertically on the mounting surface 19 via the locking part 14. By providing the support part 20 for support, and the hollow part 21 formed by being surrounded by the fixing surface 18, the mounting surface 19, and the support part 20, the rope clasp can be easily fixed even when the weight of the car 6 is large. It is possible to realize an elevator main fixing device 13 that can reduce the weight of the elevator and improve workability. Further, it is possible to realize an elevator main fixing device 13 that can reduce the number of types of clasps depending on the number of main ropes.

The rope clasp unit 15 is fixed across the longitudinal direction between the pair of upper beams 12, and the plurality of rope clasp units 15 are arranged adjacent to each other in the longitudinal direction, so that the main plan 5 It is possible to realize an elevator main fixing device 13 that can be distributed and arranged in a well-balanced manner to a plurality of rope latching units 15.

Since the rope clasp unit 15 is formed in the shape of a hollow pipe, it is possible to realize the main fixing device 13 for an elevator in which the rope clasp unit 15 can be easily formed by simply bending a flat plate. Also, since it is formed in the shape of a hollow pipe, it can be significantly lighter than conventional rope clasps.

The rope anchorage portions 14 are arranged alternately toward one side of the pair of upper beams 12 when viewed from the vertical direction, so that the distance between the adjacent anchorage portions 14 is increased, and the mounting surface 19 It is possible to realize an elevator main fixing device 13 that can avoid mutual interference of the rope stoppers 14 arranged in the elevator.

Slopes 26 are formed at both ends of the support part 20 so that the support part 20 becomes lower in the vertical direction from the mounting surface 19 toward the fixing surface 18. 12, it is possible to realize an elevator main fixing device 13 that facilitates bolt fixing work.

Embodiment 2.
FIG. 10 is a side view (enlarged view) showing main parts of an elevator main fixing device according to Embodiment 2 of the present invention. FIG. 11 is a plan view of the elevator main fixing device of FIG. 10 according to Embodiment 2 of the present invention, viewed from below. FIG. 12 is a perspective view of the rope clasp unit of FIG. 11 according to Embodiment 2 of the present invention, viewed diagonally from above. FIG. 13 is a perspective view of the rope clasp unit of FIG. 12 according to Embodiment 2 of the present invention, viewed diagonally from below.

In the figure, a main rope fixing device 27 according to Embodiment 2 of the present invention differs in that it is equipped with a seat plate 28 that supports the load acting on the rope anchorage part 14 from the main support 5, and other similar parts are provided. The same symbols will be added and the explanation will be omitted.

The seat plate 28 has a horizontal surface 30 that comes into contact with the mounting surface 29, and is provided with a mounting hole 31 into which the shackle rod 16, which is arranged to pass through the seat plate 28 in the vertical direction, is inserted. The shackle rod 16 is inserted into the mounting hole 31 of the seat plate 28, and the seat plate 28 is disposed between the mounting surface 29 and the locking portion 14. The horizontal surface 30 is formed so as to be able to come into contact with the lower end surfaces of adjacent rope clasp units 32 when viewed from the vertical direction.

Next, the operation of the second embodiment configured as described above will be explained. When the car 6 moves up and down, a load is applied from the main rope 5 to the leash unit 32 via the leash portion 14 and the seat plate 28. At this time, since the seat plate 28 comes into contact with the lower end surface of the adjacent rope clasp units 32, the load acting from the main rope 5 is distributed and received by the plurality of rope latches units 32. Therefore, by reducing the load acting on one rope clasp unit 32, the strength of the rope clasp unit 32 can be lowered.

As described above, according to the second embodiment, the seat plate 28 is provided on the rope stop 14 and supports the load acting on the rope stop 14 from the main mechanism 5, and the seat plate 28 By being placed in contact with the lower end surface of the metal unit 32, it is possible to realize an elevator main fixing device 27 in which the load acting on one rope latching unit 32 is reduced. Further, since the rope latching unit 32 can be made lower in strength than the rope latching unit 15, the main fixing device 27 can be made even lighter in weight compared to the main fixing device 13.

Note that, although the clasp units 15 and 32 have a hollow pipe shape, they do not necessarily have to have this shape. For example, it goes without saying that a hollow shape such as a U-shaped cross section or an H-shaped cross section can also produce similar functions and effects. Further, the hollow pipe shape does not need to be formed by bending a flat plate, and may be formed from an extruded material, for example.

Further, the rope stopper 14 provided in the rope stopper unit 15 is placed on the opposite side of the upper beam 12 with respect to the position of the adjacent rope stopper 14 when viewed from the vertical direction, but this is not necessarily the case. It doesn't have to be the placement. For example, if the width of the latching unit 15 is increased, the adjacent latching parts 14 can be arranged close to the positions of the adjacent latching parts 14 without interfering with each other.

Moreover, although the rope stopper part 14 is arranged closer to either one side of the pair of upper beams 12 when viewed from the vertical direction, this arrangement is not necessarily required. For example, a plurality of main ropes 5 may be arranged in one rope clasp unit 15 by arranging the rope latches 14 on both sides of the pair of upper beams 12, respectively. Furthermore, the latch portion 14 may be arranged at the center of the latch unit 15. For example, it goes without saying that similar actions and effects can be achieved by increasing the strength of the rope clasp unit 15 to the necessary minimum so that it can withstand such an arrangement.

Further, slopes are formed at both ends of the rope clasp unit 15 from the mounting surface 19 to the support section 20 so that the vertical direction becomes lower from the mounting surface 19 toward the fixed surface 18. It doesn't have to be the same shape. For example, by forming the support portion 20 in a shape that keeps the height direction low, it becomes easier to fix the bolt 22, so it goes without saying that similar actions and effects can be achieved.

1 Hoistway, 2 Machine room, 3 Hoisting machine, 4 Deflection wheel 4, 5 Main rope, 6 Car, 7 Counterweight, 8 Car frame, 9 Car room main body, 10 Vertical frame, 11 Lower frame, 12 Upper beam , 13, 27 main fixing device, 14 rope stopper, 15, 32 rope stopper unit, 16 shackle rod, 17 shackle spring, 18 fixing surface, 19, 29 mounting surface, 20 support section, 21 hollow section, 22 bolt , 23, 24 bolt hole, 25, 31 mounting hole, 26 slope, 28 seat plate, 30 horizontal surface

The present invention relates to an elevator fixing device for fixing a main rope for suspending a car to an upper frame of the car.

Claims (6)

A vertical frame that stands upright on both sides of the car and supports the car, a pair of upper beams that connect the upper parts of the vertical frames to each other and have opposing surfaces along the horizontal direction, and a rope stop for a main rope that suspends the car. A main fixing device for an elevator, comprising: a rope latch unit to which a latch is attached and which supports a load acting on the latch portion;
The rope clasp unit is arranged in plural numbers between the pair of upper beams, has at least one main rod connected thereto, and has a fixed surface fixed between the pair of upper beams, and a fixed surface facing the fixed surface. a mounting surface on which the rope stopper is attached; a support section that connects the fixing surface and the mounting surface and supports a load acting vertically on the mounting surface via the rope stopper; , a hollow portion surrounded by the fixing surface, the mounting surface, and the supporting portion;
A main fixing device for an elevator, characterized by comprising:
The rope latching unit is fixed across the longitudinal direction between the pair of upper beams, and the plurality of rope latching units are arranged adjacent to each other in the longitudinal direction. The main fixing device for the elevator according to item 1.
The main fixing device for an elevator according to claim 1, wherein the rope latch unit is formed in the shape of a hollow pipe.
The elevator main body according to any one of claims 1 to 3, wherein the rope stop portions are arranged alternately toward one side of the pair of upper beams when viewed from the vertical direction. Fixed device.
Any one of claims 1 to 4, wherein slopes are formed at both ends of the support part so that the support part becomes lower in the vertical direction from the mounting surface toward the fixing surface. Main fixing device for the elevator described.
A supporting means is provided on the rope stop and supports a load acting on the rope stop from the main mechanism,
The main fixing device for an elevator according to any one of claims 1 to 5, wherein the support means is disposed in contact with a lower end surface of the plurality of rope latching units.

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