KR102269024B1 - Rope shackle device for elevator - Google Patents

Abstract

The present invention relates to a rope shackle device for an elevator, and includes a rod portion, a socket portion provided at one end of the rod portion and connected to an end of the rope, and a spring portion provided at the other end of the rod portion and formed of a bellows spring. Therefore, by manufacturing a rope shackle for an elevator using a bellows spring, vibration and noise caused by the movement of an elevator car and counterweight can be reduced, and parts such as a spring seat and a nut are integrated into the bellows spring to assemble and install the spring on the rod. can be simplified.

Description

Rope Shackle Device for Elevator {ROPE SHACKLE DEVICE FOR ELEVATOR}

The present invention relates to a rope shackle device for an elevator, and more particularly, to a rope shackle device for an elevator capable of reducing noise and vibration of an elevator by increasing the resistance to torsion and the transverse direction of a spring caused by the movement of an elevator car and a counterweight will be.

In general, an elevator is an elevator car in which passengers or cargo are directly boarded and mounted, a driving device installed on the upper side of a hoistway formed in a building to generate a driving force that can drive up and down on the elevator car and the hoistway, and installed on the opposite side of the elevator car A counter weight is installed to keep the weight of the car in balance.

In addition, in order to lift and drive the elevator car and the counterweight by the driving force by the driving device, one end is connected to the elevator car and the other end is provided with a rope connected to the counterweight, and the rope is a hoisting sheave installed in the driving device and a pulley installed at a distance therefrom. The elevator car can be driven up and down on the hoistway by winding and unwinding the rope by the forward and reverse rotation of the hoisting sheave by the driving force of the driving device.

On the other hand, the elevator car and the counterweight are fixed by hanging from the top of the machine stand and the hoistway using a suspension device (rope), and the rope shackle is used to safely hold the suspension device (rope) when the elevator car and the counterweight move in the vertical direction.

1 is a view showing a conventional rope shackle device for an elevator.

In the conventional elevator rope shackle device 10 shown in FIG. 1 , the distal end of the rope is inserted into and fixed to the socket 13 provided at one end of the rod 11 , and through the spring 15 provided at the other end of the rod 11 . It serves as a buffer for the vertical movement of the elevator car and counterweight and unexpected situations. The spring 15 uses a compression coil spring.

A coiled spring is a spring made by winding a wire rod having a circular or square cross section in a coil state, and there are a tension coil spring and a compression coil spring depending on the direction in which a load is applied.

A spring seat 17 is fastened to one rod 11 of the compression coil spring 15 to support the compression coil spring 15 . A washer 19a and a nut 19b are fastened to the other rod 11 of the compression coil spring 15 to fix and support the rod 11 to the compression coil spring 15 by the fastening force thereof.

Conventional compression coil springs used in the rope shackle device for elevators have low shape asymmetry and low volume ratio, so they have weak resistance to lateral direction and torsion that may occur during vertical movement of elevator cars and counterweights, which causes vibration and noise. there was.

In addition, the conventional elevator rope shackle device has a problem in that the assembly process is complicated and the installation time is increased because the assembly and installation must be connected one by one together with parts such as a spring seat, a washer, and a nut when a spring is assembled and installed on a rod.

Korean Patent Publication No. 10-0295895 (2001.05.03) relates to a shim rod suspension device for an elevator, which is installed in such a way that the shim rod is inserted through the crosshead, and a shim rod spring is located outside the inserted shim rod. In this elastic installation, the nut is fastened to the shim block on the lower side of the shim block spring, and a base plate is installed on the upper side of the shim block spring, and the crosshead and the base on both sides of the shim block passing through the base plate By installing a hydraulic mount in series with the thimble spring between the plates, it has the effect of obtaining a damping effect for not only longitudinal vibration but also lateral vibration.

Korean Patent Publication No. 10-1208763 (November 29, 2012) relates to an elevator device, and the car, having a pair of receiving parts arranged at intervals in the horizontal direction, and fixed to the upper part of the car, A hanger member including a pair of opposing parts respectively inserted under each of the receiving units and displaceable in the vertical direction with respect to the mounting table, respectively, disposed between the opposing unit and the receiving unit in a direction to approach each other A cleat device having a pair of pressing bodies for pressing the opposing part and the receiving part in a direction opposed to displacement of the opposing part and the receiving part, and a shackle disposed between each of the receiving parts and connected to the hanger member and a suspension means connected to the shackle for suspending the car.

Korean Patent Publication No. 10-0295895 Korean Patent Publication No. 10-1208763

An embodiment of the present invention is to provide a rope shackle device for an elevator capable of reducing elevator noise and vibration by increasing the resistance to torsion and the transverse direction of a spring according to the movement of an elevator car and a counterweight.

An embodiment of the present invention is to provide a rope shackle device for an elevator that can simplify the assembly process and shorten the installation time through the simplification of parts.

Among the embodiments, the rope shackle device for an elevator includes a rod part, a socket part provided at one end of the rod part and connected to an end of the rope, and a spring part provided at the other end of the rod part and formed of a bellows spring.

The rod part may be helically fastened to the spring part by forming a thread on an outer circumferential surface.

The spring part includes a bellows spring formed by bellows forming a plurality of plate springs to have a uniform pitch through welding, and a spring seat provided at the upper end and lower end of the bellows spring, respectively, for fixing and supporting the bellows spring to the rod part. can be configured.

The spring seat may have a washer shape in which a thread is formed on an inner circumferential surface for helically fastening with the rod part passing through the bellows spring.

The spring unit may be integrally configured by welding the bellows spring and the spring seat.

The spring unit may further include a nut provided on the spring seat and increasing a fastening force between the rod unit and the spring seat.

The disclosed technology may have the following effects. However, this does not mean that a specific embodiment should include all of the following effects or only the following effects, so the scope of the disclosed technology should not be construed as being limited thereby.

The rope shackle device for an elevator according to an embodiment of the present invention uses a spring in the shape of a bellows with a uniform volume to increase the resistance to the lateral direction and torsion of the spring according to the movement of the elevator car and the counterweight to reduce elevator noise and vibration. can be reduced

The rope shackle device for an elevator according to an embodiment of the present invention can reduce the time and simplify parts when assembling and installing the bellows spring and the spring seat as an integral part of the rod.

The rope shackle device for an elevator according to an embodiment of the present invention can improve the buffering efficiency against the vertical movement and sudden situation of the elevator car and the counterweight by connecting a bellows spring having excellent elasticity and strength to the rod.

1 is a view showing a conventional rope shackle device for an elevator.
2 is a view showing a rope shackle device for an elevator according to an embodiment of the present invention.
FIG. 3 is a view for explaining the bellows spring in FIG. 2 .
4 is a view for explaining the integral structure of the bellows spring and the spring seat in FIG.
5 is a view showing an example of a state in which a rope shackle device for an elevator according to an embodiment is installed in an elevator car.
6 is a view illustrating an example of a state in which a rope shackle device for an elevator according to an embodiment is installed on a counterweight.

Since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiment described in the text. That is, since the embodiment may have various changes and may have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects, it should not be understood that the scope of the present invention is limited thereby.

On the other hand, the meaning of the terms described in the present application should be understood as follows.

Terms such as “first” and “second” are for distinguishing one component from another, and the scope of rights should not be limited by these terms. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component.

The singular expression is to be understood to include the plural expression unless the context clearly dictates otherwise, and terms such as "comprises" or "have" refer to the embodied feature, number, step, action, component, part or these It is intended to indicate that a combination exists, and it should be understood that it does not preclude the possibility of the existence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Terms defined in general used in the dictionary should be interpreted as being consistent with the meaning in the context of the related art, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present application.

2 is a view showing a rope shackle device for an elevator according to an embodiment of the present invention, FIG. 3 is a view for explaining the bellows spring in FIG. 2, and FIG. 4 is a bellows spring and a spring seat in FIG. It is a diagram for explaining the integrated structure.

2 to 4 , the rope shackle device 100 for an elevator may include a rod part 110 , a socket part 120 , and a spring part 130 .

The rod part 110 may be made of a thin round bar made of metal and may be coupled to one side of the elevator car and the counterweight. In one embodiment, the socket part 120 may be provided on one side of the rod part 110 , and a thread is formed on the outer circumferential surface on the other side to be helically fastened to the spring part 130 .

The socket part 120 may be connected to one end of the rope. In one embodiment, the socket unit 120 is provided with an internal space therein, the rope can be introduced. A wedge is inserted into the inner space of the socket part 120 so that the rope can be hung and fixed. Here, the socket part 120 may be formed to have an outer diameter decreasing toward the lower end thereof.

The spring unit 130 may include a spring 210 that receives the force from the rope and supports the rod unit 210 , and a spring seat 220 that fixes the spring 210 to the rod unit 110 .

In one embodiment, the spring 210 may be formed of a spring in the shape of a bellows.

There are two types of bellows: welded bellows and molded bellows. Welded Bellows are manufactured by stacking several sheets of rolled metal press-processed materials in the shape of a disk, crossing the circumferences of the inner and outer diameters, and welding them precisely. Welding in a non-oxidizing atmosphere, the welded part becomes a perfect spherical shape due to the surface tension. Formed Bellows are manufactured by welding two-ply or multi-layered diaphragm according to the use by using arc heat generated between base materials using inert gas for non-consumable electrode rods of ultra-mini thin plates of 0.05~0.02mm. The bellows spring can have a very small spring coefficient by increasing the ratio of inner and outer diameters or thinning the thickness. By designing the amount of deformation per pitch within the elastic region, the linearity is good and the hysteresis is small.

The bellows spring 210 according to an embodiment may be manufactured as a welded bellows completed through welding by stacking a plurality of leaf springs. Here, the bellows spring 210 may be formed by making a thin plate material having an excellent elongation into a tube, and then putting a bellows molding mold on the outside to apply a high pressure fluid pressure to the inside of the tube. The bellows spring 210 may use a material such as semi-austenitic stainless steel or nickel alloy to maintain the rigidity of the conventional coil compression spring.

Semi-austenitic stainless steel increases the corrosion resistance of stainless steel and gives strength by precipitation hardening. It is a high-strength stainless steel that can be used for applications requiring spring characteristics and long life.

Nickel alloy is a bellows material with the highest corrosion resistance and heat resistance, and Hastelloy C-22 is used for acid resistance and high temperature.

In one embodiment, the bellows spring 210, as shown in Fig. 3, the pitch (p) between the welded plate and the plate becomes uniform as a whole to reinforce the resistance to axial, transverse, and torsion. Here, the inner diameter of the bellows spring 210 may have a size corresponding to the diameter of the rod part 110 to insert and support the rod part 110 . At this time, the effective diameter of the bellows spring 210 can be calculated through the following Equation (1).

[Equation 1]

Effective diameter (mm) = (outer diameter + inner diameter) / 2

As shown in FIG. 4 , a spring seat 220 may be provided at the upper end and lower end of the bellows spring 210 according to an embodiment. Here, the spring seat 220 may correspond to a component for stably coupling the end of the bellows spring 210 to the rod part 110 . The spring seat 220 may be formed in a washer shape, and may be manufactured integrally by welding to the upper and lower ends of the bellows spring 210 . In this case, the spring seat 220 may be made of the same material as the bellows spring 210 . At least one of the spring sheets 220 provided at the upper end and the lower end of the bellows spring 210 may have a screw thread formed along the inner circumferential surface to be helically fastened with the screw thread formed on the outer circumferential surface of the rod part 110 . The spring seat 220 may be manufactured as a separate component from the bellows spring 210 . At this time, grooves are formed in each of the upper end and lower end of the bellows spring 210 so that the spring seat 220 may be caught and seated. A thread may be formed in the groove of the bellows spring 210 , and a portion of the spring seat 220 may be screwed to the bellows spring 210 before assembling it to the rod part 110 .

In one embodiment, a nut 230 may be further included in the spring seat helically fastened to the rod part 110 among the plurality of spring seats 220 to improve the fastening force. In this case, the nut 230 may be integrally formed with the spring seat 220 through welding, and may be helically fastened with a thread formed in the rod part 110 .

The assembly and installation process of the rope shackle device 100 for an elevator according to an embodiment having such a configuration will be described as follows.

First, when the bellows spring 210 and the spring seat 220 have an integrated structure, the spring part 130 is connected to the rod part 110 provided with the socket part 120 and the rod part 110 and the spring part The rope shackle device 100 is assembled by fastening the threads respectively formed on the spring seat 220 of 130 to each other.

When the bellows spring 210 and the spring seat 220 are not of an integrated structure, the spring seat 220 is hooked and seated in the grooves formed at the upper end and the lower end of the bellows spring 210, respectively, and fixed, and then the rod unit 110 ) to assemble the rope shackle device 100 .

The assembled rope shackle device 100 is installed by fixing the rod part 110 passing through the spring part 130 to the elevator car and the counterweight, respectively, and then fastening the end of the rope to the socket part 120 .

5 is a view showing an example of a state in which a rope shackle device for an elevator according to an embodiment is installed in an elevator car.

5, the elevator car 300 is suspended by a plurality of ropes in the hoistway. A mounting 310 is fixed to the upper portion of the elevator car 300 . A plurality of rope shackle devices 100 to which one end of each rope is individually connected are held on the mounting table 310 . That is, the rope shackle device 100 for an elevator according to an embodiment is to be installed as many as the number of ropes. For example, when the elevator car 300 is suspended by three ropes, three rope shackle devices 100 must also be installed. In the rope shackle device 100 , the rod part 110 passing through the spring part 130 with respect to the mount 310 is fixed through a bolt or the like. The end of the rope is fastened to the socket part 120 . The bellows spring 210 constituting the spring unit 130 generates an elastic repulsive force by the load of the elevator car 300 and reduces vibration or noise transmitted to the elevator car 300 through the rope while the elevator car 300 is moving. can be effectively reduced.

6 is a view showing an example of a state in which a rope shackle device for an elevator according to an embodiment is installed on a counterweight.

Referring to FIG. 6 , the counterweight 400 is suspended by a plurality of ropes in the hoistway. Each rope is wound around the drive sheave of the hoisting machine installed on the upper part of the hoistway, and the counterweight 400 is raised and lowered in the hoistway by the rotation of the drive sheave. A mount 410 is fixed to the upper portion of the counterweight 400 . A plurality of rope shackle devices 100 are held by the mounting table 410 of the counterweight to which the other end of each rope connected to the mounting table 410 of the elevator car 300 is individually connected. That is, the rope shackle device 100 for an elevator according to an embodiment is to be installed as many as the number of ropes. For example, when the counterweight 400 is suspended by three ropes, three rope shackle devices 100 must also be installed. In the rope shackle device 100 , the rod part 110 passing through the spring part 130 with respect to the mount 410 is fixed through a bolt or the like. The end of the rope is fastened to the socket part 120 . The bellows spring 210 constituting the spring unit 130 generates an elastic repulsive force by the load of the counterweight 400 and effectively reduces vibration or noise transmitted to the counterweight 400 through the rope while the counterweight 400 is moving. can

The rope shackle device 100 for an elevator according to an embodiment can increase the resistance to the transverse direction and torsion by changing the conventional coil compression spring to a bellows spring, and thus vibration and noise that may occur when the elevator car and the counterweight are moved. There is a reduction effect.

The rope shackle device 100 for an elevator according to an embodiment has a bellows spring and a spring seat and a nut as an integral structure and is screwed to the rod part, so that the installation time for the elevator car and the counterweight can be shortened and the parts can be simplified. can

Although the above has been described with reference to preferred embodiments of the present application, those skilled in the art can variously modify the present invention within the scope without departing from the spirit and scope of the present invention as set forth in the claims below. and may be changed.

100: rope shackle device for elevator
110: rod part 120: socket part
130: spring part
210: bellows spring 220: spring seat
230: nut
300: elevator car 310: mount
400: counterweight 410: mount

Claims (6)

rod part;
a socket part provided at one end of the rod part and connected to an end of the rope; and
A spring portion provided at the other end of the rod portion and formed of a bellows spring,
the spring part
a bellows spring formed by bellows forming a plurality of leaf springs to have a uniform pitch through welding; and
It is provided at the upper end and lower end of the bellows spring, respectively, and is configured to include a spring seat for fixing and supporting the bellows spring to the rod portion
A threaded groove is formed in each of the upper and lower ends of the bellows spring, the spring seat is caught and seated in the groove, and a part of the spring seat is spirally fastened to the bellows spring before being assembled to the rod part. Rope shackle device for elevators.
According to claim 1, wherein the rod portion
A rope shackle device for an elevator, characterized in that it is spirally fastened to the spring part by forming a thread on the outer circumferential surface.
delete According to claim 1, wherein the spring seat is
A rope shackle device for an elevator, characterized in that it has a washer shape in which a thread is formed on an inner circumferential surface for helically fastening with the rod part passing through the bellows spring.
delete 5. The method of claim 4, wherein the spring portion
The rope shackle device for an elevator according to claim 1, further comprising a nut provided on the spring seat and increasing the fastening force between the rod part and the spring seat.

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