JPH0361274A - Emergency stop device for elevator - Google Patents

Abstract

PURPOSE:To decrease assembling manday by disposing an operating spring and a stopper for regulating the energizing force of the spring coaxially at a rope checking rod with a buffer spring mounted thereto. CONSTITUTION:The energizing force of an operating spring 4a by the self-weight of a cage 1 is normally constrained by a stopper 10a. When abnormality such as the break of a rope 8 is generated, an abnormality start-up means 3 and a conducting means 9 are driven by the energizing force of the operating spring 4a so as to apply braking to the cage 1 to prevent its fall. The operating spring 4a and the cylindrical stopper 10a are mounted at a rope checking rod 6 for holding the cage 1 hangingly. The assembling manday can be thereby decreased as well as the space for disposing these members can be minimized, thus compacting the emergency stop device of an elevator.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an emergency stop device for a rope elevator.

[Prior Art] Fig. 5 is an explanatory diagram showing an example of a conventional emergency stop device for a rope elevator, Fig. 6 is a sectional view taken along line I-1, and Fig. 7 is a view taken along the Figure 8 is also a view in the direction of arrow B. In Figures 5 to 8, (1) is the car room, (2) is the rail that guides the car room (1) in the hoistway, and (3) is the car room.
is an abnormal activation mechanism. (30) is a frame with a concave cross section, and one arm (3 (la)) is provided with a gripper (31) having a groove (31a) with a downwardly sloped part. (32) is a rotating shaft. (33) is a rotary lever fixed to the end, and the tip has a groove (31a) for the gripper (31).
A roller (35) that fits is attached. (34)
is a conductive member fixed to the rotating shaft (33).

(4) is the other arm (30b) of the frame (30);
An actuating spring interposed between the actuating arm (91) of the transmission mechanism (9), which will be described later, normally maintains the tension of the rope (8) connected to the rope stopper rod (6) by the rope socket (7). , the fastening nut (6a) of the rope stopper rod (6)
and the actuating arm (91), thereby being compressively biased. (10) has an operating arm (9 (〉
The stopper is fixed to the cage, and its upper end surface is normally in contact with the lower surface of the arm (30b) of the frame (30), and the stopper is fixed to the cage (1).
The biasing force of the operating spring <4> compressed by the tension of the rope (8) due to its own weight is regulated to a constant level.

(9) is a transmission mechanism, one end of which is loosely fitted to the rope stopper rod (6), an actuating arm (91) that is perpendicular to this, one end of which is fixed to the actuating arm (91), and the other end of which is fixed to the frame (3).
An approximately L-shaped intermediate lever (92) rotatably supported by a pin (94) provided at
0), and a substantially double-shaped transmission lever (93) whose other end abuts the transmission member (34).

In the elevator emergency stop device configured as described above, the buffer spring (5) is normally activated by the weight of the car room (1).
The operating spring (4) is biased via the operating arm (91), and the amount of compression of the operating spring (4) due to this bias is such that the upper end surface of the stopper (]0)
b), it is held at a constant value.

At this time, the roller (35) provided on the rotating lever (32>) is located at the bottom of the groove (31a) of the gripper (31), and the brake surface (31b) of the gripper (31) and the rail (2)
) A certain gap g is formed between the two surfaces.

Now, if an abnormality such as breakage occurs in the rope (8), the actuating spring (4) is
) is no longer applied to the actuating spring (
4) moves the operating lever (91) downward in the figure, and the intermediate lever (92) fixed thereto is moved by the pin (94).
) in the direction of arrow a. With this rotation, the conduction lever (93) is displaced in the direction of the arrow, and the conduction member (34) is displaced in the direction of the arrow.
), the rotating shaft (33) is rotated in the direction of arrow a, and the rotating lever (32) fixed thereto is also rotated in the direction of arrow a. As a result, the roller (35) provided at the tip becomes the groove (31).
a) Move the inside upward and move the gripper (31) in the direction of the arrow to press the brake surface (31b) against the surface of the rail (2) to apply braking and prevent the car (1) from falling. do.

[Problem to be solved by the invention] The conventional elevator emergency stop device as described above is
As shown in the figure, the biasing force of the buffer spring (5) provided on the central axis of the rope (8), the actuating spring (4) compressed by the weight of the car room (1), and the actuating spring <4) is Since the stoppers (10) for regulation are arranged side by side in a horizontal line, the space for arranging them becomes large. Further, since the actuation spring (4) and the stopper (lO) are configured to be fixed at predetermined positions of the actuation lever (91) of the transmission mechanism (9), there is a problem that a large number of assembly steps are required.

The present invention was made to solve such problems,
It is an object of the present invention to provide an emergency stop device for an elevator, which can reduce the space for arranging a buffer spring, an operating spring, and a stopper, and can reduce the number of assembly steps.

[Means for Solving the Problems] The emergency stop device for an elevator according to the present invention provides a buffer between an operating spring that is biased by the weight of the car and a cylindrical stopper that restricts the biasing force of the operating spring. It is attached to a rope stopper rod that suspends the cage equipped with springs.

[Function] The actuation spring according to the present invention normally limits the biasing force due to the weight of the car by the stopper, and when an abnormality such as a rope breakage occurs, the biasing force drives the abnormality starting means and the transmission means, Apply braking to the car to prevent it from falling.

[Example] Fig. 1 is a schematic diagram showing the overall configuration of the present invention, Fig. 2 is a perspective view of an embodiment of the main part, Fig. 3 is a top view of Fig. 2, and Fig. 4 is a partial diagram. FIG. 2 is a front view showing a cross section. Note that the same or equivalent parts as those of the conventional example explained in FIGS. 5 to 8 are given the same reference numerals, and the explanation thereof will be omitted.

In the figure, (10a) is a cylindrical stopper that is loosely fitted onto the rope stopper rod (6) and is interposed between one arm (30b) of the frame (30) and the actuating arm (91). (See Figure 4). An operating spring (4a) is interposed on the outer periphery of this stopper (10a), and the biasing force due to the weight of the car chamber (L) applied via the buffer spring (5) and the operating arm (91) is It is regulated by a stopper (10a).

In the emergency stop device of the present invention configured as described above, normally the operating spring (4a) is regulated by the stopper (10a) in its biasing force due to the weight of the car chamber (()), and the abnormal activation mechanism (3>) is connected to the power transmission. It is held between the mechanism (9) and the brake surface (LL) of the rail (2) and gripper (31)
b), there is a predetermined gap (g) between the two. In this state, an abnormality such as breakage of the rope (8) occurs, and the transmission mechanism (9) and abnormal activation mechanism (3) are activated by the repulsion of the operating spring (4a), and the braking surface (
31b) presses against the surface of the rail (2) to brake the car (1), which is the same as in the conventional example, so the explanation will be omitted.

In this way, the present invention provides an operating spring (4a) and a buffer spring (5).
) and hist collar (10a) are arranged coaxially around the rope stopper rod (8), so the space occupied by these members can be significantly reduced, and the elevator has a necessary and sufficient emergency stop mechanism. It is possible to realize an emergency stop device.

In addition, in the above explanation, we explained the mechanism on one side, but
As is clear from FIG. 1, emergency stop devices are provided on both sides of the cab. Moreover, although the abnormal activation mechanism and the transmission mechanism have been described with reference to the illustrated embodiment, the present invention is not limited thereto, and can be implemented in emergency stop devices with other mechanisms.

[Effects of the Invention] As described above, in the present invention, the operating spring and the stopper that regulates the biasing force thereof are coaxially arranged around the rope stopper rod to which the buffer spring is attached, so that the number of assembly steps is reduced. In addition to reducing the space required to install these components, it is possible to obtain a compact elevator emergency stop device.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing the overall configuration of the present invention, Fig. 2 is a perspective view of an embodiment of the main part, Fig. 3 is a top view of Fig. 2, and Fig. 4 is a partially sectional view. The front view shown in FIG.
The arrow view and FIG. 8 are also B arrow view views. In the figure, (1) is the car compartment, (2) is the rail, and (3)
is the abnormal activation mechanism, (4a) is the operating spring, (5) is the buffer spring, (6> is the rope stopper/end, (8) is the rope, (
9) is the conduction mechanism, and (10a) is the stratosonoku. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] The car has an operating spring that is biased by the weight of the car, a stopper that regulates the biasing force of the operating spring, and a buffer spring that is attached to a rope stopper rod, and suspends the car. An emergency stop device comprising an abnormality activation means that is activated by the biasing force of the operating spring when an abnormality such as a break occurs in the rope, and a braking means that prevents the car from falling due to the activation of the abnormality activation means, An emergency stop device for an elevator, characterized in that a cylindrical stopper and an operating spring are attached to a rope stopper rod that suspends the car.