KR200237119Y1 - Rope tension equalizer of rope type elevator - Google Patents

Abstract

The present invention relates to a device for automatically equalizing the tension imbalance of the elevator rope, the object of which is to simplify the configuration and to facilitate the manufacture and installation.

In order to achieve this purpose, the present invention has a

A) The suction chamber 11, under which the suction pressure is applied by vacuum, and the reaction chamber 14, in which reaction force acts by the fluid Oil, are formed as many as the number of ropes, so that the spaces between the suction chambers and the reaction chambers are spatially equal. Tension block 10, through which through holes or through holes 12 and 15 are installed,

B) a piston 30 for sliding linear movement in a closed state in the tension adjusting chamber;

C) a piston rod (31) integrated with the piston for transferring the load between the piston and the rope;

D) a cover plate 20 in which a guide hole 21 for guiding the piston rod is sealed while closing the opening in which the piston is inserted;

E) air discharge valve (13) for discharging air from the suction chamber,

F) a fluid injection valve (16) for filling fluid into the reaction chamber;

G) constituting packing 22 and o-rings 36, 37, 38 for airtightness or preventing the ingress of dust,

By such a configuration, by eliminating the unbalance of the tension between the ropes, it is possible to solve problems such as vibration and damage to the components caused by the unbalance.

Description

Elevator rope tension equalizer {Rope tension equalizer of rope type elevator}

The present invention relates to an apparatus for automatically equalizing tension between ropes in an elevator driven or supported by a plurality of main ropes (hereinafter referred to as 'ropes'). In general, tension unbalance in elevator ropes arises from the fact that wire rope characteristics are difficult to match relative lengths between the ropes during initial installation or replacement work due to the bending of the ropes. It is also caused by the relative length change between ropes over time due to ratio differences, material defects in driving sheaves and ropes, and positional deviations in car usage. As a result, ropes that are relatively short in length compared to other ropes are subject to excessive tension, which causes wires to wear rapidly, fracture or twist, and cause premature wear of the grooves through which the rope passes. It shortens the service life and also causes vibrations during driving due to the unbalance of the loads, which adversely affects the service life of other parts and makes passengers unstable. This is similar to the improper wheel alignment in automobiles, which rapidly shortens the life of tires and related parts, and reduces steering ability and ride comfort. In rope-type lifts that share a single load by multiple ropes, the wire ropes are severely unbalanced even if they differ only a few centimeters in length from a few tens of meters.

In relation to such tension imbalance of rope, Japanese Patent Laid-Open No. 5-39181, Japanese Patent Laid-Open No. 5-105349, Korean Patent Publication No. 10-02225317 (Korean Patent Publication No. 1997-0028476), and Korean Utility Model Publication No. 89-17589, etc. Although the proposed technique has been disclosed, most of the techniques except for Japanese Patent Laid-Open Publication No. 5-39181 are devices for measuring unbalance of tension or partial wear of sheave grooves, or devices for facilitating adjustment of tension. It has the same problem.

A) The upper part of the machine room or the car where the place to detect or adjust the tension imbalance is isolated from most people's passages, and the entrance and exit for the steady check is cumbersome.

B) As described above, the tension imbalance starts from the installation work or the replacement of related parts and is the biggest cause, so even if the imbalance is confirmed, accurate adjustment is difficult.

C) Even if correct adjustments are made, subsequent imbalances will continue until reconfirmation,

D) The identification of imbalances is inconsistent with a profound imbalance.

E) Imbalances play a role of balancing at the same time (relatively shorter ropes to increase length and to promote wear of the sheave groove through which the ropes pass). .

Therefore, in order to solve such a problem, a device for automatically adjusting the tension in real time is needed, and in that sense, Japanese Patent Laid-Open No. 5-39181 can be said to provide an effective technical means for solving the tension imbalance.

However, as can be seen with reference to FIG. 12 of the accompanying drawings, Japanese Patent Laid-Open No. 5-39181 discloses that a hydraulic cylinder 60 disposed for each piston is formed of a separate block, and the hydraulic cylinder is separated from each other. If the number of ropes is increased due to the exposed pipe 61 for the flow, it is difficult to manufacture and install, and the space that can arrange the flow pipe of the fluid due to the roughly arranged between the cylinders large enough to support the load. In particular, it is difficult to secure a free space necessary for the operation of the valve 62 which prevents the flow of the working fluid, and by interlocking the piston (closing the flow pipe when the piston is near the upper limit of the flow range). It may interfere with the automatic adjustment of tension between different ropes, and because the entire load is only supported by the reaction chamber (hydraulic cylinder), Is a fear that leak a confidential portion, the whole point structure is complicated by the group the distance rope densely arranged is installed is difficult to apply in the majority of the elevator.

Therefore, the present invention is not only a structure that is easy to manufacture, install, and manage, but also an independent cylinder composed of separate blocks arranged for each rope in order to facilitate installation even in a pre-installed elevator regardless of the arrangement and arrangement of the ropes. In one block, and the cylinder space on the opposite side of the hydraulic part is composed of the suction part to share the load, and through-holes or through-holes between cylinders are installed instead of through-flow pipes communicating between cylinders for equal pressure. To provide a concise elevator rope tension equalizing device characterized in that the structure.

1 is a perspective view showing an embodiment of the elevator rope tension equalizer according to the present invention.

FIG. 2 is a perspective view, omitted or cut in parts to show the configuration of FIG. 1; FIG.

3 is a partially assembled view of FIG.

4 is a cross-sectional view illustrating the shape and position of a through hole or a through hole in FIG. 1.

5 and 6 are cross-sectional views for showing an operating state of the piston in FIG.

Fig. 7 is a cross-sectional view showing the configuration when the rope tension is equalized by pushing the rope in the transverse direction.

8, 9, 10 and 11 is a view illustrating a field installation of the subject innovation device. Figure 12 is a cross-sectional view showing a state of the prior art.

<Explanation of symbols for main parts of drawing>

1: Reference code of the device

10: tension adjusting chamber block 11: suction chamber

12, 15: through hole or through groove 13: air discharge valve

14: reaction chamber 16: fluid injection valve

17: screw hole 18: external installation hole

19: Fluid

20: cover plate 21: guide hole

22: packing 23: fastening hole

24: Tightening Bolt

30: piston 31: piston rod

31a, 31b, 31c, 31d: piston rod (division notation to indicate operation)

33, 34: flow range groove

35: Rope fastening part

36, 37, 38: O ring

40: main rope 41: rope fastening member

42: crosshead 43: car

44: balance weight 45: balance rope

46: guide rail

50: machine room floor slab 51: drive sheave

52: second sheave 53: tension tension information sheave

54: tension adjustment sheave 60: hydraulic cylinder 61: pipe 62: valve

To this end, the present invention is characterized in that each cylinder is formed in a single block instead of the pipe or hose used for the flow of fluid to install a through hole therein, the space on the opposite side of the reaction chamber relative to the piston The purpose of this is to share some of the load in a vacuum and to enhance the sealing of the O-ring at the same time.

First, among the terms used in the composition of the present invention,

The suction chamber is a closed space in the form of a cylinder where the piston can suck while maintaining a vacuum or air pressure lower than atmospheric pressure, and the piston can slide linearly. Is filled with fluid to repel the piston, and the cylinder is a closed space in which the piston can

'Tension adjusting room' is suction chamber, reaction chamber or suction chamber and reaction chamber, and 'rope fastening member' is a rope socket, shim bleed, buffer spring, spring seat, turnbuckle, hanging plate which are generally used when tightening rope. (hitch plate), a component consisting of, or part of, a nut and split pin.

The present invention is composed of three parts, the tension adjusting chamber block, the piston and the piston rod, the cover plate, and the details thereof will be described with reference to the accompanying drawings. For reference, the number of elevator ropes is composed of 3, 4, 5, ..., etc. In the arrangement, there are series, parallel (zigzag), and three lines (zigzag), but the members of the present invention device regardless of the number or arrangement Since all the accompanying drawings are shown to be arranged in series of four ropes.

<Example 1, Tensile Method>

In this embodiment, the device of the present invention is installed at the end of the rope as illustrated in FIGS. 8, 9, or 10, and the rope is stretched in the advancing direction or installed at the middle of the rope (not illustrated) to tension the rope to the side. This is the case when it is adopted.

In the tension adjusting chamber block 10 having the suction chamber 11 and the reaction chamber 14 as many as the number of ropes in FIG. 2 or FIG. 5, the through grooves or the through-holes 12, so as to equalize the pressure between the suction chambers and the reaction chambers, respectively. 15) and an air outlet valve 13 for discharging the air of the suction chamber and a fluid injection valve 16 for the fluid injection of the reaction chamber, and the external fastening hole for installing the device on both upper and lower ends. (18) is perforated (two valves are provided to prevent leakage of leaked fluids or interference of air during fluid injection, and upper and lower external fasteners are provided to facilitate installation depending on site conditions. ).

In addition, in the tension adjusting chamber, a piston 30 integrated with the piston rod 31 flowing along the guide hole 21 installed in the cover plate 20 is inserted to perform sliding linear movement in a state of maintaining airtightness. The edge of the piston rod side end of the edge is chamfered so as not to close the through hole, and the flow range indicating grooves 33 and 34 are formed on the rope side of the piston rod so as to know the flow range and the current position of the piston. For reference, when the circular flow range indicating groove 33 is at the end of the guide hole, the piston is located at the center, and when the triangular flow range displaying groove 34 is at the end of the guide hole, the piston reaches the lower limit. Therefore, the rope length can be appropriately adjusted by the operation of the rope fastening member 41 when the device is installed or when the difference in the rope length is large.

In addition, the end portion of the piston rod is formed with the rope fastening portion 35 of the screw to facilitate the fastening of the rope fastening member 41 or the tension adjusting sheave 54 shown in FIG.

Between the cover plate and the cylinder head, the outer circumference of the piston, and the inner circumference of the guide hole, the packing 22 or the o-rings 36, 37, 38 are interposed to maintain the tightness of the tension control chamber or prevent the inflow of dust.

<Example 2, Crimping Method>

This embodiment is a case where the present invention is installed in the middle portion of the rope as illustrated in Fig. 11 to adopt a method of pressing the rope from the side.

7 is a cross-sectional view showing the present embodiment, and the configuration thereof is the same as that of the first embodiment except that the suction chamber is the piston rod piece and the reaction chamber is changed to the opposite side of the piston.

The following is to explain the operation of the present invention configured as described above.

In FIG. 5 or FIG. 6, the device is a part that flows between the crosshead 42 and the rope fastening member 41 as if it is responsible for a part of the rope fastening, and is loaded from the rope through the rope fastening member. Piston rods (31a, 31b, 31c, 31d) received the tension to the piston 30 in the P direction, the reaction force due to the suction pressure of the suction chamber 11 and the fluid in the reaction chamber 14 is Acting on the piston in the R direction, in which the overall forces acting in the P and R directions are the same, and the P and R directions acting on the respective pistons by the through holes 12 and 15 forming each cylinder as one compartment. The force in P and R acting on each piston is equal to the total load divided by the number of ropes.

Thus, when the pistons are balanced in the same P and R direction, and the rope is loosened at any moment in relation to the other ropes, the piston connected to the The piston moves in the R direction until it is smaller than the force in the R direction, and the other pistons 31a, 31c, and 31d move in opposite directions by dividing the amount of this movement. The balance is achieved, thereby resolving the tension imbalance caused by the relative length change.

For reference, FIG. 5 shows a state in which the tensions are maintained as equal lengths between the ropes while FIG. 6 shows a state in which the tensions are maintained while the lengths between the ropes are different. FIG. 8 is a top view of a car, FIG. 9 is a top view of a diametric weight, and FIG. 10 is a state of installation in a machine room in a 2: 1 roping method, and FIG. 11 is a middle of a rope. Shows the case of adjusting the tension by pushing the rope laterally.

On the other hand, the present invention has been described that the configuration of the tension adjusting chamber together with the suction chamber and the reaction chamber in the above embodiment, but may include a variety of embodiments, without being limited to the above embodiment, such as configuring only one suction chamber or reaction chamber. .

By simplifying the configuration of the device that automatically equalizes the tension between the ropes in real time by the above-described action, whether the number of the ropes is large, the arrangement is in the form of series, parallel, three rows, etc., the arrangement interval is dense. It is easy to manufacture and install between them. Therefore, it can reduce the cost of manufacturing and installation. Also, since the tension adjusting room and the through hole are formed as one block, it is composed of a separate cylinder for each rope and a pipe connecting the outside. By maintaining a solid state as compared with the device, and the suction chamber is formed without increasing the volume, it is easy to manage by reducing the risk of leakage of the airtight portion due to the excessive load on the fluid of the reaction chamber.

Claims (3)

In a lift hoisted for a plurality of main ropes, A) a piston 30 disposed on each rope and receiving a load from the rope by a piston rod, B) a piston rod 31 connected to each rope through the rope fastening member 41 and integrated with the piston, C) It is composed of one block and is fastened to the crosshead 42 or the structure, etc., and it is possible to slide linear movement in the closed state of each piston while maintaining the air pressure lower than atmospheric pressure so that the suction pressure acts on the piston. At least one of the components of the reaction chamber 11 or the reaction chamber 14 in which the fluid 19 is filled so that a reaction force by hydraulic pressure is applied to the piston while the linear movement of the piston can be performed while the respective pistons are closed. A tension adjusting chamber block 10 in which through-holes 12 and 15 are formed for communicating components between the suction chambers and the reaction chambers at the same time; D) Elevator rope tension equalization device comprising a cover plate 20 on which a guide hole 21 for guiding a piston rod while sealing a cylinder head portion into which a piston is inserted is installed. The at least one component of claim 1, wherein the component comprises an air discharge valve 13 for discharging air or leaked fluid from the suction chamber or a fluid injection valve 16 for filling the reaction chamber with fluid. Elevator rope tension equalizer, characterized in that formed at least one or more in the tension control room block (10). According to claim 1 or 2, Flow range indicating grooves 33, 34 on the side of the piston rod 31 so as to know the flow range and the current position of the piston 30 with respect to the end of the guide hole (21) Elevator rope tension equalizer, characterized in that formed.