CN1239376C - Cage device for double deck elevators - Google Patents

Abstract

The present invention relates to a cage device for double-deck elevators, and an upper cage and a lower cage are hung in a main frame by suspension bodies. The upper cage and the lower cage are hung on the main frame by an odd number proportion method, and the interval between the upper cage and the lower cage is adjusted according to floor space by a driving device for adjusting cage positions. The upper cage and the lower cage are respectively provided with a loose rope safety mechanism, and the upper cage and the lower cage are fixed corresponding to a guiding rail when the suspension bodies are detected loose.

Description

Double-deck elevator car installation

technical field

The present invention relates to a car arrangement of a double-deck elevator in which an upper car and a lower car are supported on a main frame that ascends and descends in a hoistway.

Background technique

Fig. 6 is a configuration diagram of a car device of a conventional double-deck elevator disclosed in, for example, JP-A-48-76242. In the figure, a pair of guide rails 2a, 2b are provided in the main frame 1 that moves up and down in the hoistway. The upper car 3 and the lower car 4 are supported by the main frame 1 and move up and down in the main frame 1 along the guide rails 2a and 2b, thereby adjusting the distance between the upper car 3 and the lower car 4 .

On the upper part of the main frame 1, rotatable first and second sprockets 5, 6 are arranged at intervals in the horizontal direction, and first and second chains 7, 8 are wound around the first and second sprockets 5, 6.

One end of the first and second chains 7 and 8 is connected to the upper car 3 , and the other end is connected to the lower car 4 . That is, the upper car 3 and the lower car 4 are suspended by the first and second chains 7 and 8 .

The shafts of the first and second sprockets 5 and 6 are fixed to the shafts of the third and fourth sprockets 9 and 10 which rotate integrally with the first and second sprockets 5 and 6 . A rotatable fifth sprocket 11 is arranged near the fourth sprocket 10 of the main frame 1 .

The upper end portion of the main frame 1 is equipped with a car position adjustment drive device 12 that changes the distance between the upper car 3 and the lower car 4 by moving up and down. The car position adjustment drive device 12 has a car position adjustment drive device 12. The drive sprocket 13 for position adjustment. An endless third chain 14 is wound around the third to fifth sprockets 9 to 11 and the drive sprocket 13 for car position adjustment.

Next, its operation will be described. When the car position adjustment drive sprocket 13 is rotated by the driving force of the car position adjustment drive device 12, the third chain 14 circulates, and the third and fourth sprockets 9, 10 also rotate. As a result, the first and second sprockets 5 and 6 rotate. At this time, the rotation directions of the first and second sprockets 5 and 6 are opposite to each other, so that the upper car 3 and the lower car 4 move up and down through the first and second chains 7 and 8 .

The upper car 3 and the lower car 4 are suspended by the first and second chains 7 and 8. Therefore, when the upper car 3 moves downward, the car 4 moves upward; when the upper car 3 moves upward, the lower car 3 moves upward. Car 4 moves down. Thereby, the interval between the upper car 3 and the lower car 4 changes, and it is possible to cope with the floor-level interval inconsistently.

In the car device of such a conventional double-deck elevator, when the first and second chains 7 and 8 that suspend the upper car 3 and the lower car 4 are cut off, it is required to stop the upper car 3 in the main frame 1. And the means that lower car 4 falls.

Contents of the invention

The present invention has been studied to solve the foregoing problems, and its purpose is to obtain a mechanism that can prevent the upper car and the lower car in the main frame from falling when the suspension body that suspends the upper car and the lower car on the main frame is cut off. Car installation for double-deck elevators.

The car device of the double-deck elevator of the present invention has: a main frame that has guide rails and moves up and down in the hoistway; an upper car that is arranged inside the main frame and can move up and down along the guide rails; The lower car below the upper car can move up and down along the guide rail; it is mounted on the main frame and has a drive pulley for car position adjustment, and the distance between the upper car and the lower car can be adjusted by moving up and down. A variable car position adjustment drive device; and a flexible suspension body that hangs on the car position adjustment drive pulley and suspends the upper car and the lower car on the main frame. The upper car and the lower car are suspended on the main frame in an odd-numbered ratio, and the upper car and the lower car are respectively provided with a slack detection device for detecting the slack of the suspension body and fixing the upper car and the lower car relative to the guide rail. The device of the cable safety mechanism, the slack cable safety mechanism respectively has: a mounting arm rotatably connected to the upper car and the lower car and connected to the suspension body; A spring that applies force; a clamp that can be inserted into the horn-shaped groove of the guide rail; and a roller that is arranged in the groove, the suspension body is slack, and the mounting arm is pressed by the spring and pressed into the gap between the groove and the guide rail.

Description of drawings

Fig. 1 is a front view of a car device of a double-deck elevator according to an embodiment of the present invention.

Fig. 2 is a sectional view along line II-II in Fig. 1 .

FIG. 3 is a front view of the slack cable safety mechanism of FIG. 1 .

Fig. 4 is a sectional view taken along line IV-IV in Fig. 3 .

FIG. 5 is a perspective view of the cable configuration of FIG. 1 .

Fig. 6 is a configuration diagram of an example of a conventional double-deck elevator car device.

Detailed ways

Preferred embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 is a front view of a car device of a double-deck elevator according to an embodiment of the present invention, and Fig. 2 is a cross-sectional view along line II-II in Fig. 1 .

In the figure, a main driving device (hoist) 21 having a driving wheel 21a and a deflecting wheel 22 are disposed on the upper portion of the hoistway. The main rope 23 is wound around the driving pulley 21a and the deflection pulley 22 . A car device 24 is suspended from one end of the main rope 23 . The other end of the main cable 23 is suspended with a counterweight 25 .

The main frame 26 of the car 24 has a pair of vertical frames 27 , an upper beam 28 , an intermediate beam 29 , a lower beam 30 , a pair of upper car guide rails 31 , and a pair of lower car guide rails 32 . The upper beam 28 is horizontally fixed between the upper ends of the vertical frames 27 . The middle beam 29 is fixed horizontally between the middle parts of the vertical frames 27 , and the lower beam 30 is fixed horizontally between the lower end parts of the vertical frames 27 .

The upper car guide rail 31 and the lower car guide rail 32 are fixed inside the main frame 26 parallel to the vertical frame 27 .

An upper car 33 is disposed between the upper beam 28 and the middle beam 29 . The upper car 33 can move up and down along the upper car guide rail 31. A lower car 34 is disposed between the intermediate beam 29 and the lower beam 30 . The lower car 34 can move up and down along the lower car guide rail 32 .

On the upper beam 28 is supported a car position adjusting drive device 35 which changes the distance between the upper car 33 and the lower car 34 by moving up and down, and has a car position adjusting drive wheel 36 .

A pair of rotatable upper beam pulleys 37 are mounted on the upper beam 28 . A pair of rotatable intermediate beam pulleys 38 are mounted on the intermediate beam 29 . A pair of rotatable upper car pulleys 39 is mounted on the upper portion of the upper car 33 . A pair of rotatable lower car pulleys 40 is mounted on the upper portion of the lower car 34 .

The upper car 33 and the lower car 34 are suspended from the opposite main frame by cables 50 which are flexible suspension bodies. The cable 50 is made of, for example, a synthetic fiber cable. One end of the cable 50 is connected to the lower portion of the upper car 33 , and the other end is connected to the lower portion of the lower car 34 .

The cable 50 is wound around an upper beam pulley 37 , an upper car pulley 39 , a car position adjusting drive pulley 36 , a lower car pulley 40 , and an intermediate beam pulley 38 from one end thereof. Therefore, the upper cage 33 and the lower cage 34 are suspended with a ratio of 3:1.

At the bottom of the upper car 33 and the lower car 34, a slack cable safety mechanism 51, which detects the slack of the cable 50 and fixes the upper car 33 and the lower car 34 relative to the corresponding guide rails 31, 32, is provided respectively. 52.

Fig. 3 is a front view of the slack cable safety mechanism 51, 52 in Fig. 1, and Fig. 4 is a cross-sectional view along line IV-IV in Fig. 3 . In the figure, the end of the cable 50 is connected to the tip of the mounting arm 53 . The attachment arm 53 is connected to the lower portions of the upper car 33 and the lower car 34 and is rotatable around a shaft 54 . The shaft 54 is arranged at the proximal end of the attachment arm 53 .

The attachment arm 53 is biased downward with respect to the upper cage 33 and the lower cage 34 by the compression spring 55 . Clamps 56 are fixed to the side surfaces of the upper car 33 and the lower car 34, and the jigs 56 are provided with flared grooves 56a into which the guide rails 31 and 32 are inserted, and the width thereof expands downward.

The side surfaces of the upper car 33 and the lower car 34 are equipped with a link rod 57 which is mechanically linked and rotated with the rotation of the mounting arm 53 . The top end of the link bar 57 is provided with a roller 58 . That is, when the cable 50 is slack and the mounting arm 53 is pressed down by the compression spring 55 , the roller 58 is pressed between the groove portion 56 a and the guide rails 31 , 32 .

Slack cable safety mechanisms 51 , 52 each have a mounting arm 53 , a shaft 54 , a spring 55 , a clamp 56 , a linkage 57 and a roller 58 .

5 is a perspective view showing the structure of the cable 50 in FIG. 1. In the figure, a plurality of inner strands 42 and an inner strand 43 of filling strands 43 disposed in the gaps between the inner strands 42 are disposed around the core wire 41. Strand layer 44. Each inner strand 42 is composed of a plurality of aramid fibers and impregnated materials such as polyurethane. The filling strand 43 is made of, for example, polyamide resin.

An outer strand layer 46 having a plurality of outer strands 45 is disposed on the outer periphery of the inner strand layer 44, and each outer strand 45 is the same as the inner strand 42, and is made of impregnated materials such as a plurality of aramid fibers and polyurethane .

A friction-reducing covering layer 47 is disposed between the inner strand layer 44 and the outer strand layer 46 to avoid wear of the strands 42, 45 caused by friction between the strands 42, 45. Furthermore, a protective covering layer 48 is disposed on the outer peripheral portion of the outer strand layer 46 . Such a synthetic fiber cable has a higher coefficient of friction than a cable made of steel cable and is excellent in flexibility.

The operation will be described below. The car device 24 and the counterweight 25 are driven by the main driving device 21 to go up and down in the hoistway, and the upper car 33 and the lower car 34 stop at the elevator hall adjacent to the upper and lower sides at the same time, but the building floor interval is not necessarily fixed. Varies by layer.

At this time, the upper car and the lower car 34 are raised and lowered relative to the main frame 26 by using the driving device 35 for adjusting the car position, and the distance between the two is adjusted according to the floor interval. , the distance between the two decreases. In addition, when the upper car 33 ascends, the lower car 34 descends, and the distance between them increases.

In such a car device 24, when the cables 50 suspending the upper car 33 and the lower car 34 are loosened or cut off in case, the slack cable safety mechanisms 51, 52 stop the upper car 33 in the main frame 26. And lower car 34 falls.

That is, when the compression spring 55 presses the mounting arm 53 downward, the interlocking lever 57 rotates in conjunction with each other, whereby the roller 58 is pressed into between the groove portion 56a and the guide rails 31, 32, so that even if the cable 50 is loosened or cut off, At the same time, the upper car 33 and the lower car 34 are also fixed relative to the guide rails 31, 32, which can prevent the upper car 33 and the lower car 34 from falling in the main frame.

Since the car position adjusting drive device 35 winds only the weight difference between the upper car 33 and the lower car 34, the output power can be reduced. And, if it is a 3:1 ratio method, then the car position adjustment drive device 35 can support 1/3 of the total weight of the upper car 33 and the lower car 34, so it is possible to realize the car position adjustment drive device 35. Small and lightweight.

Since the cable 50 made of a synthetic fiber cable is used, the diameter of each of the pulleys 37 to 40 can be reduced, so that the installation space of each of the pulleys 37 to 40 inside the main frame 26 can be easily secured. The adjustment amount when the distance between the upper car 33 and the lower car 34 is the largest, or the closest, can be easily performed by simply adjusting the length of the cable 50, and there are few structural restrictions.

In the foregoing embodiments, the cable 50 made of a synthetic fiber cable was shown as the suspension body, but a cable made of other materials may also be used. Moreover, a belt can also be used as a suspension body. And also available chain can be used as hanging suspension body, and also available sprocket wheel can replace pulley.

In the aforementioned embodiment, the upper car 33 and the lower car 34 are suspended in the main frame 26 in a ratio of 3:1, but an odd ratio can also be used, for example, a ratio of 5:1 can also be used.

In the foregoing embodiments, it has been described that the car device 24 and the counterweight 25 are double-deck elevators suspended in a ratio of 1:1, but the suspension method of the car device 24 is not particularly limited.

In addition, the present invention can also be applied to all double-deck elevators such as hydraulic elevators, cable-type linear motor elevators, and ropeless-type linear motor elevators.

Claims (3)

1. the cage device of a double-deck elevator has: be provided with guide rail and the main frame of lifting in access trunk; Be configured in this main frame inboard, along the described guide rail car of going up moving up and down; The inboard of described main frame, be configured in described on car below, along described guide rail car down moving up and down; Car position adjustment actuating device, it is equipped on the described main frame and car position adjustment drive wheel is arranged, and makes described car and the described car down gone up move up and down and make both interval variation; And be wound on described car position adjustment with on the drive wheel, described car and the described car down gone up is suspended in pliability suspention body on the described main frame, it is characterized in that,

Described upward car and described car down are suspended on the described main frame in odd number ratio mode, be provided with respectively on described upward car and the described car down and detect the loose hawser safety gear that described suspention body is loose and described upward car and the described described relatively guide rail of car are down fixed

Described loose hawser safety gear has respectively: can be connected in described car and described hold-down arm car and that connect described suspention body down gone up rotatably; The below of described relatively last car of described hold-down arm and described following car is given the spring of the application of force; Be provided with the anchor clamps that can insert the horn-like slot part of described guide rail; And be configured in described slot part, described suspention body produces loose, described hold-down arm and depressed by described spring and be pressed into roller between described slot part and the described guide rail.

2. the cage device of double-deck elevator as claimed in claim 1 is characterized in that, described suspention body is the hawser that is made of synthetic fibre rope.

3. the cage device of double-deck elevator as claimed in claim 1 is characterized in that, described main frame has: a pair of vertical post; Be fixed in the upper beam between described vertical post upper end; Be fixed in the intermediate beam between described vertical post pars intermedia; Be fixed in the underbeam between described vertical post bottom; Carrying pulley on the described upper beam puts the beams in place; Carry the intermediate beam pulley on the described intermediate beam; Described going up on the car carried sedan-chair phase pulley; Carry car pulley down on the described car down; One end of described suspention body is connected with the described car of going up; The other end of described suspention body is connected with described car down; Described suspention body is pressed described upper beam pulley, the described order of car pulley, described car position adjustment drive pulley, described car pulley down and described intermediate beam pulley that goes up around extension from a described end.

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