JPH07330246A - Emergency stop device for elevator - Google Patents

Abstract

PURPOSE:To provide an emergency stopper for an elevator which has a braking member of a braking mechanism operated from a non-braking position to a braking position by a simple constitution of device. CONSTITUTION:An operating mechanism 27 having a flexible line body 25 having one end connected to a braking member 22 and the other end connected to a connector 11 is provided to hold normally the braking member 22 in a non-braking position and displace the braking member 22 to a braking position by the lowering displacement of the connector 11 to a lift body 3. Thus, since the braking member 22 is pulled up and displaced by the flexible line body 25, a required braking operation can be obtained in abnormalities even if the accuracy of positions in which the surface of a rail 2, wide width part of a fitting groove 6 and braking member 22 are respectively disposed is low. Thus, a simplified, lightened and miniaturized structure can be obtained to be easily worked and assembled without needing the high accuracy in the work and assemblage of the associated members.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency stop device for an elevator which operates when an elevator body descends abnormally.

[0002]

2. Description of the Related Art FIGS.
It is a figure which shows the conventional emergency stop device for elevators shown by 274 publication, FIG. 9 is a top view of the same apparatus, FIG. 10 is an enlarged view of the cross section along the XX line of FIG. 9, and FIG. FIG. 12 is a side view of FIG. 10 showing an enlarged front view showing a part of the apparatus by breaking it. In the figure, (1) is the elevator hoistway,
(2) is a rail standing on the hoistway (1), (3) is an elevator car that lifts up and down the hoistway (1), and (4) is provided under the hoistway (3) It is a frame of the emergency stop device for the elevator.

As shown in FIG. 11, (5) is a braking member provided on the lower surface of one side in the width direction of the frame (4), and the guide portion of the rail (2) is fitted with a gap. The fitting groove (6) is formed, and a wide portion (7) whose lower end side is wide is formed in the lower portion of the fitting groove (6). (8) is an operating plate that is mounted on the lower surface of the other side in the width direction of the frame (4) via a biasing body (9) composed of a compression coil spring and is biased downward, and (10) is a hoistway ( It is the main rope that is suspended from 1) and suspends the lifting body (3).

(11) is a frame in which the main rope (10) is connected to the upper end.
A connector which is inserted into (4) with a gap formed, and whose lower end is inserted into the operating plate (8) and is held by the main rope (10) via the compression coil spring (12), and (13) is a frame ( A shaft provided in the groove of 4) and pivotally supported by the diaphragm, (14) is a protrusion fixed to the shaft (13), and (15) is Z.
One side is fixed to the actuating plate (8), and the other side is inserted through the through hole of the side wall of the frame (4) with a gap, and the transmission piece facing the tip of the protrusion (14) from above, Reference numeral (16) is a blocking body which is provided on the frame (4) and blocks upward displacement of the operating plate (8) at a predetermined position.

(17) is an L-shaped member, one side of which is fixed to the actuating plate (8), and the other end of which is pivoted with its upper end pivotally attached to the side wall of the frame (4) opposite to the actuating plate (8). The mechanism (18) is an arm whose one end is fixed to the end of the shaft (13), and the other end is bent into the wide part (7) of the fitting groove (6), and the bent part is cut from the notch. The holding part (19) is formed. Reference numeral (20) is a brake which is held by the bending portion (19) of the arm (18) and is arranged in the wide portion (7) of the fitting groove (6) and which is composed of rollers.

As a result, the lifting body (3) is connected to the main rope (10) via the connecting tool (11) and is suspended. And the lifting body
(3) is engaged with the rail (2) via a guide tool (not shown) so as to be able to move up and down, and the main rope (10) is driven to move the lifting body.
(3) is guided by the rail (2) to move up and down the hoistway (1). Then, the conventional elevator emergency stop device is configured as described above, and the actuating plate (8) holding the connecting tool (11) in the normal time is biased by the self-weight of at least the lifting body (3).
As a result, as shown in FIG. 12, the ascending displacement is blocked by the blocking member (16) at a predetermined position.

In this normal state, the arm (18) is arranged in the lowered position as shown in FIG. 11, and the brake shoe (20) held by the holding portion (19) of the arm (18) has the fitting groove (6). It is arranged near the lower part of the wide portion (7) and is held in a non-braking position apart from the rail (2).
As a result, the lifting body (3) is normally operated. When the main rope (10) loses tension due to breakage or the like, the actuating plate (8) is displaced downward by the urging force of the urging body (9). This operating plate
The action of (8) lowers the transmission piece (15), which causes the
(14) is rotationally displaced.

As a result, the shaft (13) pivots to move the arm (18).
Is displaced to the raised position. Then, due to the upward displacement of the arm (18), the brake shoe (20) moves toward the upper part of the wide width portion (7) of the fitting groove (6), and the space between the rail (2) surface and the side wall of the wide width portion (7) is moved. It is inserted by the wedge action. As a result, the rail (2) is pinched by the side wall of the fitting groove (6) and the brake shoe (20), and the main rope of the lifting body (3) is pressed.
(10) It is designed to brake the abnormal descent when the tension is lost.

[0009]

In the conventional elevator emergency stop device as described above, the arm (1
8) Hold the brake shoe (20) held by the holding portion (19) of the rail (2).
It is necessary to hold the holding portion (19) so as not to drop it until it is fitted between the surface and the side wall of the wide portion (7). Therefore, the position of the holding part (19) should be set to the rail position rather than the position of the center of gravity of the brake shoe (20).
The rail (2) surface, the wide portion (7) of the fitting groove (6) and the holding portion (19) are arranged so as not to come into contact with each other while approaching the surface (2).

In this structure, the rail (2) surface, the wide portion (7) of the fitting groove (6), the holding portion (19), and the brake shoe (20) are accurately specified in order to ensure the braking operation. It is necessary to arrange them at positions, and it is required to improve the processing accuracy and the assembly accuracy of each of these members. For this reason, processing work,
There has been a problem that the assembly work requires complicated labor and the manufacturing cost increases. The stopping ability of the emergency stop device and the brake
Although the size of (20) is closely related, it is necessary to improve the processing accuracy and the assembling accuracy, so that the emergency stop device becomes unnecessarily large and the weight increases.

The present invention has been made to solve the above problems, and an emergency stop for an elevator in which a brake element that clamps a rail with a braking member operates from a non-braking position to a braking position with a simple device configuration. The purpose is to obtain the device.

[0012]

SUMMARY OF THE INVENTION In an elevator emergency stop device according to the present invention, a rail is provided upright in a hoistway to guide an elevating body, and an elevating body is suspended by being connected to the elevating body via a connector. The rails are mounted on the main ropes and the lifting body that are held by the rails, and are installed in the fitting groove that is fitted with a gap formed between them, and the rail is normally placed in the non-braking position and displaced to the side wall of the fitting groove. A brake element arranged at a braking position for pinching the
A flexible strip is provided, one end of which is connected to the brake element and the other end of which is connected to a connector. And an actuating mechanism.

Further, in the elevator emergency stop device according to the present invention, a rail that is erected in the hoistway and guides the lifting body, and a main rope that is connected to the lifting body via a connector to suspend the lifting body. , The rail is provided in the lifting body and is installed in the fitting groove in which the rail is fitted to form a gap, and is normally placed in the non-braking position and displaced to pinch the rail with the side wall of the fitting groove. A brake element arranged at a braking position, a flexible strip having one end connected to the brake element and the other end connected to the tip of the connector via a nut screwed into the threaded portion at the tip of the connector so as to be vertically displaceable. A body is provided, and an actuating mechanism is provided which normally holds the brake element in the non-braking position and displaces the brake element to the braking position by the downward displacement of the connecting tool with respect to the elevating body.

Further, in the emergency stop device for an elevator according to the present invention, a rail that is erected in the hoistway to guide the elevating body, a main rope suspended in the hoistway, and an end of the main rope having a rectangular cross section. Connected to the vertical section, provided on the fixed section of the lifting body, inserted into the rectangular hole corresponding to the rectangular shape with a gap formed, and held by the lifting body, rotation in the longitudinal axis is blocked, and the main rope is moved to the lifting body. The connected connecting tool and the rail provided on the elevating body are provided in the fitting groove fitted with the gap formed, and are normally placed in the non-braking position and displaced to form the side wall of the fitting groove. A brake element that is placed in a braking position where the rail is clamped by
A flexible strip, one end of which is connected to the brake element and the other end of which is connected to a connector, is provided to hold the brake element in the non-braking position at all times, and the brake element is displaced to the braking position by the downward displacement of the connector with respect to the lifting body. And an actuating mechanism.

Further, in the emergency stop device for an elevator according to the present invention, a rail which is erected in the hoistway and guides the lifting body, and a main rope which is connected to the lifting body via a connector to suspend the lifting body. , The rail is provided in the lifting body and is installed in the fitting groove in which the rail is fitted to form a gap, and is normally placed in the non-braking position and displaced to pinch the rail with the side wall of the fitting groove. A brake element arranged at the braking position, a scale provided on the connecting tool to read the lifting position of the lifting body of the connecting tool, and a flexible strip body having one end connected to the brake element and the other end connected to the connecting tool are provided. And an actuating mechanism that normally holds the brake element in the non-braking position and displaces the brake element to the braking position by the downward displacement of the connecting tool with respect to the lifting body.

Further, in the emergency stop device for an elevator according to the present invention, a rail which is erected in the hoistway and guides the lifting body, and a main rope which is connected to the lifting body via a connector to suspend the lifting body. , The rails are installed in the upper and lower parts of the lifting body and are installed in the fitting groove fitted with a gap, and are normally placed in the non-braking position and displaced to the side wall of the fitting groove. A brake element arranged at a braking position for pinching the rail by means of, and a flexible strip body having one end connected to a connecting tool at the other end of the brake element arranged at the upper part of the lifting body are provided at all times. A second actuating mechanism for holding the brake element in the non-braking position and displacing the upper brake element to the braking position by the downward displacement of the connecting member with respect to the elevator body, and the other end of the brake element disposed at the lower portion of the elevator body at one end. Is a flexible strip connected to the connector Holding the brake shoe to the non-braking position, a first actuating mechanism for displacing the bottom of the braking element in the braking position is provided by the lowering displacement of the connector with respect to the vertically movable body.

Further, in the emergency stop device for an elevator according to the present invention, a rail that is erected in the hoistway and guides the lifting body, and a main rope that is connected to the lifting body via a connector to suspend the lifting body. , The rails are installed in the upper and lower parts of the lifting body and are installed in the fitting groove fitted with a gap, and are normally placed in the non-braking position and displaced to the side wall of the fitting groove. A brake element arranged at a braking position for pinching the rail by means of, and a flexible strip body having one end arranged at the lower part of the lifting body and the other end connected to a connecting member are provided at all times. A first actuating mechanism for holding the brake element in the non-braking position and displacing the lower brake element to the braking position by the downward displacement of the connecting member with respect to the elevator body; Is connected to the connecting tool and is the same as the flexible strip of the first actuating mechanism. A flexible strip having a characteristic of low elongation under heavy weight is provided, and the upper brake element is normally held in the non-braking position, and the upper brake element is displaced to the braking position by the downward displacement of the connecting member with respect to the elevating body. And an actuating mechanism.

[0018]

In the elevator emergency stop device constructed as described above, the brake is normally held by the actuating mechanism in the non-braking position, and the actuating mechanism flexes when the coupler is displaced downward with respect to the lifting body. The brake element is pulled up by the strip and displaced to the braking position.

Further, in the emergency stop device for an elevator constructed as described above, when the brake is normally held in the non-braking position by the actuating mechanism and the coupler is displaced downward with respect to the elevating body, the coupler is lowered. The brake bar is pulled up by the flexible strip of the actuating mechanism connected to the distal end portion of the so as to be displaceable in the vertical direction and displaced to the braking position.

Further, in the elevator emergency stop device constructed as described above, the brake element is normally held by the actuating mechanism in the non-braking position, and the elevator body is held so as not to be rotatable about the longitudinal axis. When the tool is displaced downward with respect to the lifting body, the brake bar is pulled up by the flexible strip of the actuating mechanism connected to the distal end of the connector in a vertically displaceable manner and displaced to the braking position.

Further, in the elevator emergency stop device constructed as described above, the brake is held in the non-braking position by the actuating mechanism at a normal time, and the connecting tool having the scale for reading the lifting position of the elevator is provided as the elevator. When it is displaced downwardly, the brake element is pulled up by the flexible strip of the actuating mechanism and displaced to the braking position.

Further, in the elevator emergency stop device constructed as described above, the braking mechanism having the braking elements is provided on the upper and lower parts of the lifting body, and the corresponding braking elements are normally closed by the respective operating mechanisms. When the connecting tool is held in the braking position and the connecting member is displaced downward with respect to the lifting body, the corresponding brake element is pulled up by the flexible strip of each actuating mechanism and displaced to the braking position.

Further, in the elevator emergency stop device constructed as described above, the braking mechanism having the braking elements is provided on the upper and lower parts of the lifting body, and the corresponding braking elements are normally closed by the respective operating mechanisms. When the coupler is held in the braking position and the coupling is lowered and displaced with respect to the lifting body, the corresponding brake element is pulled up by the flexible strip of each actuating mechanism, that is, the upper brake element is connected to the lower brake element. The flexible strip having a characteristic of less elongation under the same load as the flexible strip is pulled up and displaced to the braking position.

[0024]

【Example】

Example 1. FIG. 1 is an explanatory view showing an embodiment of the present invention,
The same components as those of the elevator device and the elevator emergency stop device shown in FIG. 9 are designated by the same reference numerals and the description thereof will be omitted. In the figure, (1) is a hoistway of an elevator, (2) is a rail standing on the hoistway (1), (3) is an elevator car that lifts and hoists the hoistway (1),
(4) is a frame of an emergency stop device for an elevator provided on the lower side of the lifting body (3).

As shown in FIG. 1, (5) is a braking body provided on the lower surface of one side in the width direction of the frame (4), and the guide portion of the rail (2) is fitted with a gap formed therein. A fitting groove (6) is formed, and a wide portion (7) is formed at the lower part of the fitting groove (6) so that the lower end side expands. (9) is an urging body made of a compression coil spring arranged on the lower surface of the other side in the width direction of the frame (4), (21) is a washer arranged below the urging body (9), ) Is the main rope suspended from the hoistway (1) and suspending the lifting body (3).

(11) is a frame in which the main rope (10) is connected to the upper end.
A space is formed in (4), and at the same time, it is inserted in the urging body (9) and washer (21), and the frame is inserted through the compression coil spring (12) and the nut screwed into the screw part at the tip. It is a connector held in 4). (22) has a cylindrical shape and the axial direction of the cylinder is 2
The brake element is a roller provided with an engagement groove (23) that is retreated from the outer periphery of the dividing groove, and is arranged in the wide portion (7) of the fitting groove (6).

Reference numeral (24) is a guide rail provided in the wide portion (7) of the fitting groove (6), and is fitted with a gap in the engaging groove (23) of the brake shoe (22) to form a wide width. It is located along the slope of section (7). (25) one end is wound around the engaging groove (23) of the brake shoe (22) and connected, and the other end is a flexible strip made of wire rope connected to the connecting tool (11), (26) Is a holding spring composed of a compression coil spring fitted in the flexible strip (25) and arranged in the wide portion (7) of the fitting groove (6), and both ends thereof are the upper edges of the wide portion (7). Also, it is equipped in contact with the brake shoe (22). (27) is a flexible strip (2
This is an actuating mechanism whose main members are 5) and the holding spring (26).

(28) is a mounting plate fastened to the frame (4) so as to face the rail (2), and (29) is pivotally mounted to the mounting plate (28) and is below the brake shoe (22). A stationary pulley that is placed at a corresponding position and rolls on the rail (2) surface, and (30) is pivotally attached to a mounting plate (27) and is arranged to face the stationary pulley (29) and rolls on the rail (2) surface. The moving displacement pulley, (31) is attached to the mounting plate (28) and is a pressing body composed of a torsion spring that presses the displacement pulley (30) against the rail (2) surface, (3
Reference numeral 2) is a guide including a mounting plate (28), a stationary pulley (29), a displacement pulley (30) and a pressing body (31).

As a result, the lifting body (3) is connected to the main rope (10) via the connecting tool (11) and is suspended. And the lifting body
(3) is engaged with the rail (2) via the guide tool (32) so as to be able to move up and down, and the main rope (10) is driven to guide the lifting body (3) to the rail (2) to move up and down. Go up and down path (1). Then, in the elevator emergency stop device configured as described above,
In a normal state, the connecting tool (11) rises against the biasing force of the biasing body (9) by at least the weight of the lifting body (3), and is held in the raised position as shown in FIG.

In this normal state, the holding spring (26), that is, the actuating mechanism (27) causes the brake element (5) to be fitted to the lower part of the wide portion (7) of the fitting groove (6) as shown in FIG. 22) is placed,
It is held in a non-braking position away from the rail (2). In this state, a gap is formed between the rail (2) and the fitting groove (6) of the braking body (5), and the lifting body (3) is normally operated. And
When the main rope (10) loses tension due to breakage etc., the urging body
The urging force of (9) causes the coupler (11) to be displaced downward.

By the displacement of the connecting tool (11), the flexible strip (25)
Is pulled, that is, the actuating mechanism (27) raises the brake shoe (22) against the holding force of the holding spring (26). As a result, the brake shoe (20) moves toward the upper part of the wide portion (7) of the fitting groove (6) and is fitted by a wedge action between the rail (2) surface and the side wall of the wide portion (7). . Then, the side wall of the fitting groove (6) and the brake shoe
The rail (2) is squeezed by (20) and the main rope (1
0) Abnormal descent when the tension is lost is braked.

When the rail (2) is pinched by the side wall of the fitting groove (6) and the brake element (20), the wide portion of the fitting groove (6) is pressed.
The gap between the side wall opposite (7) and the rail (2) disappeared,
The lifting body (3) is displaced horizontally with respect to the rail (2). However, due to the displacement of the lifting body (3), the displacement pulley (30) withdraws from the stationary pulley (29) against the pressing force of the pressing body (31). Therefore, during emergency braking, the guide tool (32) is deformed due to the horizontal load acting on the guide tool (32),
It is possible to prevent the occurrence of scandals such as damage.

Thus, the brake element (22) is movably engaged with the guide rail (24) by the engagement groove (23), and the operation mechanism (2
The non-braking position is normally maintained by 7), and the operating mechanism (27) displaces the braking position when an abnormality occurs.
This makes it possible to obtain the required braking action in the event of an abnormality, even if the positions of the rail (2) surface, the wide portion (7), and the brake element (20) are low in accuracy. Therefore, it is not necessary to particularly improve the processing accuracy and the assembly accuracy of the related members, the structure can be simplified, the weight and the size can be reduced, the processing and the assembly can be easily performed, and the manufacturing cost can be reduced. You can

Example 2. 2 to 6 are explanatory views showing another embodiment of the present invention, FIG. 2 is an explanatory view of the second embodiment, FIG. 3 is an enlarged view of a III portion of FIG. 2, and FIG. 4 is a IV-IV line of FIG. 2 is a cross-sectional view taken along the line of FIG. 5, FIG. 5 is a vertical cross-sectional view of a main part of FIG. 4, FIG. 6 is a view for explaining the operation of the elevator emergency stop device in FIG.
The elevator device and the elevator emergency stop device are configured in the same manner as in FIG. 9 described above except for FIG. In the figure, the same reference numerals as those in FIG. 1 described above indicate corresponding parts, and (33) is a side frame having a groove shape in cross section and constituting a main part of the lifting body (3).

(5) is fitted into the groove of the side frame (33) in a fitted state, and has a square hole (34) vertically penetrating to the opposite side of the fitting groove (6).
The (11) is a connecting member that has a rectangular cross section near the upper end and is inserted through a square hole (34) with a gap formed between the vertical hole (35) and the side surface near the upper end. A side hole (36) is provided. (25) is a flexible strip consisting of a wire rope, one end of which is wound around and connected to the engaging groove (23) of the brake shoe (22), and the side hole (36) of the connecting tool (11) and the longitudinal passage. The other end is inserted into the hole (35) and is fixed to the washer (37) fitted to the screw at the lower end of the connector (11).

Reference numeral (38) is a nut that is screwed into a screw at the lower end of the connector (11) and clamps the washer (37), and (9) is an urging member made of a compression coil spring fitted in the connector (11). The upper end of the body is arranged on the lower surface of the braking body (5). Reference numeral (39) is a spring receiving piece that is fitted to the threaded portion of the lower end of the connector (11) and is arranged above the washer (37) and is in contact with the lower end of the urging body (9).

Reference numeral (40) is a nut that is screwed into the screw at the lower end of the connector (11) and supports the spring receiving piece (39). Reference numeral (41) is a scale provided at a position corresponding to the upper surface of the braking body (5) on the side surface of the coupling tool (11) to read the compressed state of the biasing body (9), that is, the spring force. Reference numeral (42) is a groove provided on the upper surface of the braking body (5), and the flexible strip (25) is arranged in a fitted state with a gap.

As a result, the elevating body (3) is connected to the main rope (10) via the connecting tool (11) and is suspended by the urging body (9). Then, the elevating body (3) is engaged with the rail (2) so as to be able to ascend and descend via the guide tool (32), and the main rope (10) is driven to move the elevating body (3) to the rail (2). It is guided up and down the hoistway (1). Then, in the elevator emergency stop device configured as described above, in the normal time, the coupler (11) rises against the biasing force of the biasing body (9) by at least the self-weight of the lifting body (3), It is held in the raised position as shown in FIGS.

In this normal state, as shown in FIGS. 4 and 5, by the holding spring (26), that is, the operating mechanism (27), the brake element (22) is located near the lower part of the wide portion (7) of the fitting groove (6). ) Is placed and held in a non-braking position away from the rail (2). In this state, a space is formed between the rail (2) and the fitting groove (6) of the braking body (5), and the lifting body (3) is normally operated. When the main rope (10) loses tension due to breakage or the like, the connecting tool (11) is displaced downward by the urging force of the urging body (9).

By the displacement of the connecting tool (11), the flexible strip (25)
Is pulled through the washer (27), i.e. the actuating mechanism (2
The brake element (22) is lifted by the force (7) against the holding force of the holding spring (26) as shown in FIG. Therefore, although detailed description is omitted, the same effects as those of the embodiment of FIG. 1 can be obtained in the embodiments of FIGS.

In the embodiment of FIGS. 2 to 6, the end of the flexible strip (25) on the side of the connector (11) is fixed to the washer (37).
The washer (37) is inserted through the screw at the lower end of the connector (11) and the nut
It is pinched by (38). Therefore, the nut (38) is rotated to displace the position of the washer (37) with respect to the screw at the lower end of the connector (11), and the wide portion (7) of the fitting groove (6) of the brake shoe (22) is displaced. The position at can be easily adjusted.

As a result, the brake element (22) is reliably held in the non-braking position during normal operation, and the brake element (20) is retained by the rail (2) during abnormal conditions.
The brake shoe (22) can be arranged without difficulty in a position where it is securely fitted between the surface and the side wall of the wide portion (7). And the lifting body
Brake body (5) and brake shoe (22) provided on both sides of (3)
The operation of the brake element (22) in the braking mechanism due to the abnormal condition can be synchronized, and a highly reliable abnormal downward braking action can be obtained.

Further, since the connecting tool (11) having a rectangular cross section is inserted through the square hole (34) of the braking body (5) so as to form a gap, the connecting tool (11) is located along the longitudinal axis of the braking body. It does not rotate with respect to (5). For this reason, the connector (11) is
By rotating with respect to (5), the moving action of the flexible strip (25) inserted through the connector (11) is hindered, or the braking body is
(5) Groove (42) for flexible strip (25) on top surface and side hole of connector (11)
It is possible to prevent a problem that the flexible strip (25) receives a shear load between itself and (36), and it is possible to obtain a reliable braking action by raising the brake shoe (20) at the time of an abnormality.

Further, the compression state of the urging body (9), that is, the spring force can be read by the scale (41) at the position corresponding to the upper surface of the braking body (5) on the side surface of the connecting tool (11). Couplings (11) provided on both sides of the lifting body (3) for filling
The spring force of the urging body (9) arranged at can be easily matched by rotating the nut (40). By this, the lifting body
Brake body (5) and brake shoe (22) provided on both sides of (3)
It is possible to synchronize the operation at the time of abnormality in the braking mechanism due to, and it is possible to obtain a highly reliable abnormal downward braking action.

Example 3. FIG. 7 is also a view showing another embodiment of the present invention, which is a side view of the elevator body, and the elevator device and the emergency stop device for the elevator are configured in the same manner as in FIGS. There is. In the figure, the same reference numerals as those in FIGS. 2 to 6 described above indicate corresponding parts, (43) is an upper frame provided on the upper end of the side frame (33), and (11) is provided on the upper frame (43). The connecting rod is inserted through the braking body (5) and the braking body (5) provided on the frame (4).

(27) The main components are a flexible strip (25) and a holding spring (26) connected to a brake shoe (22) arranged on a brake body (5) provided on the frame (4). It is a first actuation mechanism. (271) is a brake element (2) arranged on the brake body (5) provided on the upper frame (43).
2) A second actuating mechanism mainly composed of a flexible strip (251) and a holding spring (26) connected to the flexible strip (251), which is a flexible strip of the first actuating mechanism (27). A strip is used that has less elongation under the same load than the strip (25).

The flexible strip (251) is a side hole of the connector (11).
(36) and the vertical hole (35), the lower end is a connecting tool.
(11) Fixed to the washer (371) fitted to the screw at the lower end,
Further, the washer (371) is clamped by a nut (381) screwed into a screw at the lower end of the connector (11).

In summary, in the embodiment of FIG. 7, a braking body (5) and a brake shoe (22) similar to those of the embodiment of FIGS. A mechanism is provided, and the lower braking mechanism is the same as the first embodiment shown in FIGS.
The operating mechanism (27) and the upper braking mechanism are connected to the connecting rod (11) by the second operating mechanism (271) similar to the first operating mechanism (27). Therefore, although detailed description is omitted, the same operation as the embodiment of FIGS. 2 to 6 can be obtained in the embodiment of FIG.

Further, in the embodiment of FIG. 7, the flexible strip (251) of the second operating mechanism (271) is the flexible strip of the first operating mechanism (27).
Since the strip having the characteristic of less elongation under the same load is used as compared with (25), the following action can be obtained. That is, the washer (37) is moved by the rotation of the nut (38) to adjust the length of the flexible strip (25) of the first actuation mechanism (27), and the washer is rotated by the rotation of the nut (381). (371) is moved to adjust the length of the flexible strip (251) of the second actuating mechanism (271). By this adjustment, it is possible to synchronize the operation at the time of abnormality by the braking body (5) and the brake shoe (22) of the upper and lower braking mechanisms of the lifting body (3), and obtain a highly reliable abnormal descending braking action. be able to.

Further, in the embodiment shown in FIG. 7, braking mechanisms are provided on the upper and lower portions of the lifting body (3), and these braking mechanisms operate at the time of abnormality through one connecting tool (11). Then, a required braking action can be obtained by equipping a required number of braking mechanisms having one type of braking function corresponding to the weight of the lifting body (3). Therefore, it is possible to cope with the lifting bodies (3) having different weights with a small number of members and a small number of types of equipment, and it is possible to reduce the manufacturing cost.

Example 4. FIG. 8 is a view showing another embodiment of the present invention, and an elevator device and an elevator emergency stop device are configured similarly to FIG. 9 except that FIG. In the figure, the same symbols as those in FIG. 4 described above indicate the corresponding parts, and (221) is a wedge-shaped brake element.

In the normal state, the holding spring (26), that is, the actuating mechanism (27), as shown in FIG.
A brake shoe (221) is arranged near the lower part of the wide portion (7) of (6) and is held at a non-braking position apart from the rail (2). In this state, a space is formed between the rail (2) and the fitting groove (6) of the braking body (5), and the lifting body (3) is normally operated.

When the main rope (10) loses tension due to breakage or the like, the connecting tool (11) is displaced downward by the urging force of the urging body (9). Due to the displacement of the connecting tool (11), the flexible strip (25)
Is pulled through the washer (27), i.e. the actuating mechanism (2
7) against the holding force of the holding spring (26) by the brake element (221)
Rises. Therefore, although detailed description is omitted, FIG.
It is obvious that the same effect as in the embodiment of FIG.

[0054]

As described above, according to the present invention, the rails that are erected in the hoistway to guide the lifting body, the main ropes that are connected to the lifting body via the connecting tool and that suspend the lifting body, and the lifting body are provided. The rail is installed in the fitting groove that is fitted with a gap and is normally placed in the non-braking position, and is displaced and placed in the braking position where the rail is pinched by the side wall of the fitting groove. And a flexible strip whose one end is connected to the brake element and the other end is connected to the coupling tool.The brake element is normally held in the non-braking position, and braking is performed by the downward displacement of the coupling tool with respect to the lifting body. And an operating mechanism for displacing the child to the braking position.

As a result, the brake element is normally held in the non-braking position by the actuating mechanism, and when the connecting tool is displaced downward with respect to the lifting body, the flexible element of the actuating mechanism pulls up the brake element to the braking position. Displace. Therefore, even if the positions of the rail surface, the fitting groove wide portion, and the brake element are low in accuracy, the required braking action can be obtained in the event of an abnormality. Therefore, it is not necessary to particularly increase the processing accuracy and the assembly accuracy of the related members, the structure can be simplified, the weight and the size can be reduced, and the processing and the assembly can be easily performed, and the manufacturing cost can be reduced. There is.

Further, as described above, the present invention is provided with a rail standing upright in the hoistway to guide the lifting body, a main rope and a lifting body which are connected to the lifting body via a connector to suspend the lifting body. The rail is installed in the fitting groove that is fitted to form a gap and is normally placed in the non-braking position, and is displaced to the braking position where the rail is pinched by the side wall of the fitting groove. The brake element to be arranged is provided with a flexible element that has one end connected to the brake element and the other end connected to the tip of the connector via a nut screwed into the threaded portion at the tip of the connector so as to be vertically displaceable. In addition, an operating mechanism that normally holds the brake element in the non-braking position and displaces the brake element to the braking position by the downward displacement of the connecting tool with respect to the elevating body is provided.

As a result, the brake element is normally held in the non-braking position by the actuating mechanism, and when the connector is displaced downward with respect to the lifting body, it is vertically movably connected to the tip of the connector. The flexible strip of the actuating mechanism pulls up the brake shoe and displaces it to the braking position. Therefore, even if the positions of the rail surface, the fitting groove wide portion, and the brake element are low in accuracy, the required braking action can be obtained in the event of an abnormality. Therefore, it is not necessary to particularly increase the processing accuracy and the assembly accuracy of the related members, the structure can be simplified, the weight and the size can be reduced, and the processing and the assembly can be easily performed, and the manufacturing cost can be reduced. There is.

Further, the flexible strip of the actuating mechanism is vertically displaceably connected to the tip of the connecting tool via a nut screwed into the threaded portion of the connecting tool. Therefore, it is possible to easily adjust the position of the brake shoe in the fitting groove provided in the lifting body by rotating the nut to adjust the stretched state of the flexible strip. As a result, there is an effect that a highly reliable abnormal descending braking action is obtained by the operation of the braking element in the braking mechanism during the abnormal state.

As described above, according to the present invention, the rails standing upright in the hoistway to guide the elevating body, the main ropes suspended in the hoistway, and having a rectangular cross section are connected to the ends of the main ropes. And is held in the lifting body by forming a gap in a square hole corresponding to a rectangular shape provided in the fixed portion of the lifting body, and is held by the lifting body, and the rotation of the longitudinal axis is prevented, and the main rope is connected to the lifting body. The tool and the rail provided on the lifting body are installed in a fitting groove fitted with a gap formed between them, and are normally placed in a non-braking position and displaced to move the rail by the side wall of the fitting groove. A brake element arranged at a braking position for pinching and a flexible strip having one end connected to the brake element and the other end connected to a connector are provided, and the brake element is normally held in the non-braking position and connected to the lifting body. And an operating mechanism for displacing the brake element to the braking position by the downward displacement of the tool.

Thus, when the brake is normally held in the non-braking position by the actuating mechanism, and the connector, which is held by the elevating body so as not to be rotatable in the longitudinal axis, is displaced downward with respect to the elevating body. The brake bar is pulled up by the flexible strip of the actuating mechanism connected to the distal end portion of the so as to be displaceable in the vertical direction and displaced to the braking position. Therefore, even if the positions of the rail surface, the fitting groove wide portion, and the brake element are low in accuracy, the required braking action can be obtained in the event of an abnormality. Therefore, it is not necessary to particularly increase the processing accuracy and the assembly accuracy of the related members, the structure can be simplified, the weight and the size can be reduced, and the processing and the assembly can be easily performed, and the manufacturing cost can be reduced. There is.

Further, since the connecting tool is held by the elevating body so as not to be rotatable, the moving action of the flexible strip connected to the connecting tool is hindered by the rotating of the connecting tool with respect to the elevating body. It is possible to prevent such troubles and to obtain a reliable braking action due to the rise of the brake shoe when an abnormality occurs.

Further, as described above, the present invention is provided with rails which are erected in the hoistway to guide the elevating body, main ropes which are connected to the elevating body via a connecting tool and which suspend the elevating body, and an elevating body. The rail is installed in the fitting groove that is fitted to form a gap and is normally placed in the non-braking position, and is displaced to the braking position where the rail is pinched by the side wall of the fitting groove. A brake element to be arranged, a scale provided on the connecting tool to read the lifting position of the lifting body of the connecting tool, and a flexible strip having one end connected to the brake element and the other end connected to the connecting tool are provided at all times. Is provided with an operating mechanism that holds the brake element in the non-braking position and displaces the brake element to the braking position by the downward displacement of the connecting tool with respect to the lifting body.

As a result, the brake element is normally held at the non-braking position by the actuating mechanism, and the actuating mechanism flexes when the connecting tool having the scale for reading the lifting position of the ascending / descending body is displaced downward with respect to the ascending / descending body. The brake element is pulled up by the strip and displaced to the braking position. Therefore, even if the positions of the rail surface, the fitting groove wide portion, and the brake element are low in accuracy, the required braking action can be obtained in the event of an abnormality. Therefore, it is not necessary to particularly increase the processing accuracy and the assembly accuracy of the related members, the structure can be simplified, the weight and the size can be reduced, and the processing and the assembly can be easily performed, and the manufacturing cost can be reduced. There is.

Further, since the scale for reading the hanging position of the connecting tool in the lifting body is provided, the compressed state of the spring interposed between the connecting tool and the lifting body, that is, the spring force can be read. As a result, the hanging condition of the lifting body in the connecting tool can be easily verified, and there is an effect that a highly reliable abnormal down braking action can be obtained with a small number of steps.

Further, as described above, the present invention is provided with rails that are erected in the hoistway to guide the elevating body, main ropes that are connected to the elevating body via a connecting tool and that suspend the elevating body, and an elevating body. The rails are installed in the upper and lower parts of the rail, respectively, and are installed in the fitting groove fitted with a gap, and are normally placed in the non-braking position and displaced to cause the side wall of the fitting groove to move the rail. A brake element arranged at a braking position for pinching the brake element, a brake element arranged at one end on the upper part of the lifting body, and a flexible strip connected at the other end to a connector are provided. A second actuating mechanism which holds the non-braking position and displaces the upper brake element to the braking position by the downward displacement of the connecting tool with respect to the lifting body; A flexible strip connected to the is provided, and the lower brake element is normally in the non-braking position. Lifting, and first to displace the lower part of the braking element in the braking position by the lowering displacement of the connector with respect to the lifting body
And an operating mechanism.

Thus, the braking mechanism having the brake elements is provided on the upper and lower portions of the lifting body, and the corresponding braking elements are normally held in the non-braking position by the respective operating mechanisms, and the connecting tool is connected to the lifting body. When one is displaced downward, the corresponding brake element is pulled up by the flexible strip of each actuating mechanism and displaced to the braking position. Therefore, the rail surface,
Even if the positions of the fitting groove wide part and the brake element are low in accuracy, a required braking action can be obtained in an abnormal condition.
Therefore, it is not necessary to particularly increase the processing accuracy and the assembly accuracy of the related members, the structure can be simplified, the weight and the size can be reduced, and the processing and the assembly can be easily performed, and the manufacturing cost can be reduced. There is.

Further, a braking mechanism having brake elements is provided on the upper and lower parts of the lifting body, and the respective operating mechanisms operate when the connecting tool is displaced downward with respect to the lifting body. Therefore, a required braking action can be obtained by equipping a required number of braking mechanisms having one type of braking function corresponding to the weight of the lifting body. Therefore, it is possible to deal with lifting bodies having different weights with a small number of members and a small number of types of equipment, and there is an effect of reducing manufacturing costs.

In addition, as described above, the present invention is provided with rails which are erected in the hoistway to guide the lifting body, main ropes which are connected to the lifting body via a connecting tool, and which lift the lifting body. The rails are installed in the upper and lower parts of the rail, respectively, and are installed in the fitting groove fitted with a gap, and are normally placed in the non-braking position and displaced and the side wall of the fitting groove causes the rail to move. A brake element arranged at a braking position for pinching the brake element, a brake element having one end arranged at the lower portion of the lifting body, and a flexible strip connected to the coupling member at the other end are provided. A first actuation mechanism that holds the brake element in the non-braking position and displaces the lower brake element to the braking position by downward displacement of the connecting tool with respect to the lifting body; Connected to a flexible strip of the first actuating mechanism and has less elongation under the same load. A flexible strip having a characteristic is provided, and a second actuating mechanism is provided which normally holds the upper brake element at the non-braking position and displaces the upper brake element to the braking position by the downward displacement of the connecting member with respect to the lifting body. It is a thing.

Accordingly, the braking mechanism having the brake elements is provided on the upper and lower portions of the lifting body, and the corresponding braking elements are normally held in the non-braking position by the respective operating mechanisms, and the connecting tool is connected to the lifting body. When one of the actuating mechanisms is displaced downward, the corresponding brake element is pulled up by the flexible strip of each actuating mechanism, that is, the upper brake shoe has less extension at the same load than the flexible strip of the lower brake shoe. It is pulled up by the characteristic flexible strip and displaced to the braking position. Therefore, even if the positions of the rail surface, the fitting groove wide portion, and the brake element are low in accuracy, the required braking action can be obtained in the event of an abnormality. Therefore, it is not necessary to particularly improve the processing accuracy and the assembly accuracy of the related members, and the structure can be simplified,
It is lightweight and compact, can be easily processed and assembled, and has the effect of reducing manufacturing costs.

Further, a braking mechanism having a braking element is provided on the upper and lower parts of the lifting body, and each operating mechanism operates when the connecting tool is displaced downward with respect to the lifting body. Therefore, a required braking action can be obtained by equipping a required number of braking mechanisms having one type of braking function corresponding to the weight of the lifting body. Therefore, it is possible to deal with lifting bodies having different weights with a small number of members and a small number of types of equipment, and there is an effect of reducing manufacturing costs.

Further, the upper brake element of the lifting / lowering body is lifted by the flexible strip having the characteristic of less expansion under the same load as the flexible strip of the lower brake shoe and is displaced to the braking position. Therefore, by adjusting the length of the flexible strip of each of the first braking mechanism and the second braking mechanism, the abnormal state operation by the braking body and the brake element of each of the first braking mechanism and the second braking mechanism is synchronized. Therefore, it is possible to obtain a highly reliable abnormal downward braking action.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing Embodiment 2 of the present invention.

FIG. 3 is an enlarged view of a part III in FIG.

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

5 is a vertical cross-sectional view of the main part of FIG.

6 is an explanatory diagram showing the operation of the elevator emergency stop device in FIG. 4. FIG.

FIG. 7 is a side view of an elevating body showing a third embodiment of the present invention.

FIG. 8 is an explanatory diagram showing Embodiment 4 of the present invention.

FIG. 9 is a plan view showing a conventional elevator emergency stop device.

10 is an enlarged view of a cross section taken along line XX of FIG.

FIG. 11 is a front view of FIG. 9 with a part thereof broken away.

FIG. 12 is a side view of FIG.

[Explanation of symbols]

1 hoistway, 2 rails, 3 lifting bodies, 6 fitting grooves, 1
0 main rope, 11 connecting tool, 22 brake element, 25,251
Flexible strip, 27 First actuation mechanism, 34 Square hole, 38
Nut, 41 scale, 271 second actuation mechanism.

Claims (6)

[Claims] 1. A rail that stands upright in a hoistway and guides an elevating body, a main rope that is connected to the elevating body via a connecting tool to suspend the elevating body, and the rail that is provided on the elevating body. Is provided in a fitting groove fitted with a gap, and is normally placed in a non-braking position, and is placed in a braking position where it is displaced and pinches the rail with the side wall of the fitting groove. A brake bar and a flexible strip whose one end is connected to the brake bar and the other end is connected to the connector are provided, and the brake bar is normally held in a non-braking position, and the connector is lowered with respect to the elevating body. An emergency stop device for an elevator, comprising an operating mechanism that displaces the brake element to a braking position by displacement. 2. A rail standing on the hoistway to guide the lifting body, a main rope connected to the lifting body via a connecting tool to suspend the lifting body, and a rail provided on the lifting body. Is provided in a fitting groove fitted with a gap, and is normally placed in a non-braking position, and is placed in a braking position where it is displaced and pinches the rail with the side wall of the fitting groove. A brake bar and a flexible strip, one end of which is connected to the brake bar and the other end of which is vertically displaceably connected to the tip of the connector via a nut screwed into the threaded portion of the connector, is provided. An emergency stop device for an elevator, comprising: an operating mechanism that normally holds the brake element in a non-braking position, and displaces the brake element to the braking position by a downward displacement of the connecting member with respect to the elevating body. 3. A rail for standing up and down the hoistway to guide the hoisting body, a main rope suspended in the hoistway, having a rectangular cross section and being connected to the end of the main rope, for fixing the hoisting body. And a connecting tool for connecting the main rope to the elevating body by preventing the rotation in the longitudinal axis from being held by the elevating body by forming a gap in a square hole corresponding to the square shape. , The rail is provided in the fitting groove fitted in the lifting body and forming a gap, is normally placed in the non-braking position, is displaced, and is displaced by the side wall of the fitting groove. A brake element arranged at a braking position for pinching the rail, and a flexible strip having one end connected to the brake element and the other end connected to the connection tool are provided, and the brake element is always held in the non-braking position. , Displacing the brake element to the braking position by the downward displacement of the connecting tool with respect to the lifting body Emergency stop device for elevator equipped with operating mechanism. 4. A rail that stands upright in a hoistway and guides an elevating body, a main rope that is connected to the elevating body via a connecting tool to suspend the elevating body, and the rail that is provided on the elevating body. Is provided in a fitting groove fitted with a gap, and is normally placed in a non-braking position, and is placed in a braking position where it is displaced and pinches the rail with the side wall of the fitting groove. A brake element, a scale provided on the connecting tool to read a hanging position of the lifting body of the connecting tool, and a flexible strip body having one end connected to the brake element and the other end connected to the connecting tool are provided. ,
An emergency stop device for an elevator, comprising: an operating mechanism that normally holds the brake element in a non-braking position and displaces the brake element to the braking position by downward displacement of the connecting tool with respect to the elevating body. 5. A rail that stands upright in a hoistway and guides the lifting body, a main rope that is connected to the lifting body via a connecting tool to suspend the lifting body, and an upper portion and a lower portion of the lifting body. The rail is provided in the fitting groove fitted with a gap, and is normally placed in the non-braking position.
The brake element is disposed at a braking position where it is displaced and presses the rail by the side wall of the fitting groove, one end is connected to the brake element disposed above the lifting body, and the other end is connected to the connector. A second actuating mechanism for holding the upper brake element in a non-braking position at all times and for displacing the upper brake element to the braking position by downward displacement of the connecting member with respect to the elevating body. And a flexible strip connected to the connecting member at the other end is provided to the brake element whose one end is arranged at the lower portion of the lifting body, and normally holds the lower brake element at the non-braking position, An emergency stop device for an elevator, comprising: a first operation mechanism that displaces the lower brake element to a braking position by a downward displacement of the connecting tool with respect to the elevating body. 6. A rail standing upright in the hoistway to guide the elevating body, a main rope connected to the elevating body via a connecting tool to suspend the elevating body, and an upper portion and a lower portion of the elevating body. The rail is provided in the fitting groove fitted with a gap, and is normally placed in the non-braking position.
A brake element arranged at a braking position where it is displaced and presses the rail by the side wall of the fitting groove, one end is connected to the brake element arranged at a lower portion of the lifting body, and the other end is connected to the connecting tool. A first actuating mechanism for holding the lower brake element in a non-braking position at all times, and displacing the lower brake element to the braking position by downward displacement of the connector with respect to the elevating body. And one end of which is connected to the brake element disposed above the lifting body and the other end of which is connected to the connecting member, and which has a characteristic of less elongation under the same load than the flexible member of the first actuating mechanism. A second actuating mechanism for holding the upper brake element in a non-braking position at all times and for displacing the upper brake element to the braking position by downward displacement of the connecting tool with respect to the elevating body. Emergency stop device for elevators.