JPH0829903B2 - Elevator emergency stop device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a safety device for an elevator.

[Conventional technology]

FIG. 3 is an explanatory view showing an example of an elevator emergency stop device, and FIGS. 4 and 5 are diagrams showing a main part configuration of the elevator emergency stop device. FIG. 4 is a front view and FIG. It is a side view of the part shown in FIG.

Generally, for elevators, as shown in FIG.
A machine room 2 is formed above the hoistway 1 of the elevator, and a main rope 3 is attached to a hoisting machine (not shown) installed in the machine room 2.
An elevating body, for example, a counterweight 4 that moves up and down in the hoistway 1 is attached to both ends of the main rope 3. A pair of stop devices 5 and 5a that engage with a guide rail (not shown) and can stop the counterweight 4 are attached to a bracket 4a attached to the lower portion of the counterweight 4. On the other hand, an endless governor rope 8 is hung on a governor 6 installed in the machine room 2 and a tensioning wheel 7 arranged below the hoistway 1, and tension is applied to the governor rope 8 by the tensioning wheel 7. At the same time, the governor 6 captures the governor rope 8 when the moving speed of the governor rope 8 exceeds a predetermined speed. The governor rope 8 is connected to the tip of an operating lever 9 provided on the bracket 4a so as to be rotatable in a vertical plane.

Further, as shown in FIG. 4, the connecting portion 8a provided on the governor rope 8 and the tip of the operating lever 9 described above are pinned.
Connected via 10. The operating lever 9 is integrally provided on a shaft 11 rotatably supported by the bracket 4a in a vertical plane. As shown in FIG. 5, the stop device 5 arranged below the actuating lever 9 has a pull-up rod 13 whose upper end is connected to a lever 12 fixed to a shaft 11, and a pull-up rod 13 which is supported by the pull-up rod 13. A pair of steel wedge members 14 that can be engaged with guide rails (not shown), and these wedge members 14
Guide device 15 for guiding the wedge members 14 in a direction in which the wedge members 14 approach each other as they rise, and the wedge member
The U-shaped spring steel material 16 is capable of applying a force to each other in the direction toward each other. The other stop device 5a has a similar structure. As shown in FIG. 4, the stop device 5a has a lever 12b fixed to the shaft 11 and one end 12b.
A connecting rod 17 connected to the tip of the lever, a lever 18 whose tip is connected to the other end of the connecting rod 17, and a shaft 19 integrally supported by the bracket 4a so as to be rotatable in a vertical plane. The upper end of the pull-up rod 13a is connected to the tip of a lever 20 fixedly mounted on the shaft 19 via. As a result, when the actuating lever 9 rotates in the upward direction from the position shown in FIG. 4, the pulling lever 13 of the one stop device 5 rises and the pulling lever 13a of the other stop device 5a rises.
Is also rising.

Further, an interlocking body that interlocks with the operating lever 9, for example, the rod 25, is connected to the tip of a lever 12a fixed to the shaft 11. Then, the holding means, which is attached to the bracket 4a of the counterweight 4 and can hold one end of the rod 25, for example, the holding device 21, is fixed to a pair of plate members capable of holding the end 25a of the rod 25, for example, the bracket 4a. And a movable plate member 23 that is rotatably supported by the plate member 22 at an end portion thereof separated from the rod 25, and a force for biasing the movable plate member 23 with an elastic force in a direction approaching the plate member 22. Means of force, for example 200-300
The coil spring 24 biases a spring force of about kg. At normal times, one end 25a of the rod 25 is held by the holding device 21 and the operating lever 9 is held at a predetermined position shown in FIG. Since the rotation of the actuating lever 9 is prevented in this manner, the relative height relationship between the counterweight 4 and the connecting portion 8a of the governor rope 8 is kept constant, and accordingly, the lifting speed of the counterweight 4 is increased. And the moving speed of the governor rope 8 are equal. Incidentally, the above-mentioned stop device 5,5
a, speed governor 6, tension wheel 7, governor rope 8, actuating lever 9, pin 10, shafts 11, 19, levers 12, 12a, 18, 20, rod 17,
25, the holding device 21 constitutes a conventional elevator emergency stop device.

In such a conventional elevator emergency stop device, when the descending speed of the counterweight 4 exceeds a predetermined speed to reach a dangerous state, the moving speed of the governor rope 8 equivalent to this descending speed is detected. The governor 6 catches the governor rope 8 and the governor rope 8 stops.
On the other hand, the counterweight 4 having a larger inertia than the governor rope 8 tries to continue lowering further, so that the actuating lever 9 is given a force to rotate upward from the predetermined position shown in FIG. A force for moving to the right side in FIG. 4 is applied to the rod 25 via 12a. The end 25a of the rod 25 moves between the plate member 22 and the movable plate member 23 against the spring force of the coil spring 24, and separates from the plate member 22 and the movable plate member 23. At this time, the operating lever 9 is rotated to the position shown by the alternate long and short dash line in FIG.

Then, the pulling rod 13 of the one stop device 5 is pulled up via the shaft 11 and the lever 12. The wedge member 14 also rises together with the pulling rod 13, the guide members 15 guide the wedge members 14 toward each other, and engage with a guide rail (not shown). Further, the spring steel materials 16 exert a force in a direction in which they approach each other, and the wedge materials 14 gradually press the guide rails. At the same time, the pulling rod 13a of the other stop device 5a also includes the shaft 11, the lever 12b, the connecting rod 17, and the lever.
18 、 Shaft 19 、 Lever 20 are pulled up in order and stopped.
5a works similarly. As a result, the counterweight 4 is gradually braked and stopped.

In the emergency stop device operated as described above, the movable plate member 23 is pushed up against the spring force of the coil spring 24 by an input through a tool such as a spanner or a lever, and the movable plate member 23 is pushed up.
By inserting the end portion 25a of the rod 25 that has been separated between the plate 23 and the plate member 23, the rod 25 is restored to a predetermined state.

[Problems to be Solved by the Invention]

By the way, in the conventional elevator emergency stop device as described above, in order to push up the movable plate member 23 against the spring force of about 200 to 300 kg, a large force of at least about 50 kg must be applied to a tool such as a spanner or a lever. Must also
While maintaining this state, when inserting the end portion 25a of the rod 25 between the plate members 22 and 23, there is a problem that one worker is accompanied by danger and remarkable difficulty.

The present invention has been made in view of the actual situation in the prior art as described above, and an object thereof is to provide an emergency stop device for an elevator capable of safely performing a returning operation by one person.

[Means for solving the problem]

In order to achieve this object, the present invention provides an operating lever rotatably provided in a vertical plane on an elevating body moving up and down in a hoistway, and stopping the elevating body according to the rotation of the operating lever. A stopping device, a rod interlocking with the operating lever, a fixed plate member fixed to the lifting body, a movable plate member rotatably connected to the fixed plate member, and a direction in which the movable plate member approaches the fixed plate member. Holding means capable of holding the end portion of the rod by the fixed plate member and the movable plate member, and a spring that biases the fixed plate member and the movable plate member, and is connected to the tip of the operating lever and is formed above the hoistway. An endless governor rope hanging from the machine room, a speed governor installed in the machine room and capturing the governor rope when the moving speed of the governor rope exceeds a predetermined speed, and arranged at the lower part of the hoistway. In an emergency stop device for an elevator having a tensioning wheel for applying tension to a vana rope, a lower plate arranged below the holding means, an upper plate arranged above the fixing plate member, and these lower plates and the upper plate. A base composed of a vertical plate connecting the plate, a fixing bolt for fixing the base to the fixing plate member, and a screw engaging the upper plate portion of the base located in the vicinity of the spring, and its head is A push-up bolt that can come into contact with the lower surface of the movable member of the holding means, and a guide plate that is provided on the base and that has an inclined surface that can guide the end portion of the rod to the upper surface of the fixed plate material of the holding means. It is configured with.

[Action]

Since the present invention is configured as described above, in order to restore the rod separated from between the pair of plate members of the holding means to the initial state with the operation of the stop device, that is, this rod and To return the interlocked operating lever to the initial standby state, rotate the push-up bolt to raise it and rotate the movable plate of the holding means with its head in the direction away from the fixed plate against the force of the spring. The rod end along the inclined part of the guide plate to the fixed plate material, and in this state, rotate the push-up bolt so that the rod is clamped between the movable plate member and the fixed plate member. You can do it. As described above, since it is sufficient to rotate the push-up bolt, only one worker is required, and the work for returning the safety device can be safely performed.

〔Example〕

Hereinafter, an emergency stop device for an elevator according to the present invention will be described with reference to the drawings.

1 and 2 are views for explaining an embodiment of an elevator emergency stop device according to the present invention. FIG. 1 is a front view showing a returning means provided in the embodiment, and FIG. 2 is shown in FIG. It is a side view of the returning means shown. In FIGS. 1 and 2, the same parts as those shown in FIGS. 3 to 5 are designated by the same reference numerals.

The holding device 21 shown in FIG.
Returning means for returning the rod 25 separated from the holding device 21 to the initial standby state of the operating lever 9, that is, a predetermined state held by the holding device 21, for example, a cure, is shown. A tool 30 is provided. This jig 30
As shown in FIG. 2, the base 31 has a U-shaped cross section, is installed so as to sandwich the fixed plate member 22 of the holding device 21, and has a lower plate 31a that abuts the lower surface of the plate member 22. The upper plate 31b is arranged above the plate member 22 and the vertical plate 31c connecting the lower plate 31a and the upper plate 31b. Then, the fixing bolt 32 and the push-up bolt 33 are screwed to the upper plate 31b, and the tip of the fixing bolt 32 presses the upper surface of the plate member 22, whereby the base 31 is fixed to the plate member 22. On the other hand, the head of the push-up bolt 33 can contact the movable plate member 23.
The base 31 is arranged near the spring 24 as shown in FIG. That is, the push-up bolt 33 screwed to the base 31 is arranged near the spring 24. Also, the lower plate
A guide plate 34 capable of guiding the end portion 25a of the rod 25 is attached to the upper surface of the portion of the member 31a which projects from the plate member 22 to the right in FIG. The guide plate 34 has the same thickness dimension as the plate material 22 in the vicinity of the plate material 22, is formed so that the thickness dimension becomes smaller as it protrudes from the plate material 22, and the end portion of the rod 25 is formed. The length dimension of the guide plate 34 is set such that the end portion 25a of the rod 25 is located on the inclined surface 35 of the guide plate 34 when the plate member 22 and the movable plate member 23 are detached from the plate member 22. The movable plate 23 is pinned at the left end of FIG.
These plate members 22 and movable plate members are connected to the plate members 22 through 36.
Reference numeral 23 is an end portion on the right side in FIG. 1 and is capable of holding an end portion 25a of a rod 25. Also, with the base 31 and push-up bolt 33,
An operating means that is mounted on the plate member 22 and the movable plate member 23 and separates the movable plate member 23 from the plate member 22 against the spring force of the coil spring 24 is provided, and the jig 30 is provided with this operating unit.

In this embodiment, in order to mount the jig 30 on the holding device 21, first, the push-up bolt 33 is lowered to a height position where it does not interfere with the lower surface of the movable plate member 23, and the upper plate 31b of the base 31 is
The base 31 is arranged so as to sandwich the plate member 22 by the lower plate 31a, and the fixing bolt 32 is tightened to fix the base 31 to the plate member 22.

Then, for example, the head of the push-up bolt 33 is moved to the movable plate 23
Raise it until it abuts the bottom surface of. In this state, as described above, the rod is rotated with the rotation of the operating lever 9.
When the end 25a of 25 is disengaged from the holding device 21, this end 25a
Moves onto the inclined surface 35 of the guide plate 34, and the stop device
The counterweight 4 is stopped by the operation of 5, 5a.

Therefore, in a predetermined state, that is, the plate member 22 of the holding device 21,
In order to return to the state where the end 25a of the rod 25 is clamped between the movable plate members 23, the worker rotates the push-up bolt 33 of the jig 30 to move the gap between the plate members 22 and the movable plate member 23 at a predetermined position. The lifting bolt 33 is raised so that the height is larger than the height of the end 25a of the rod 25. Next, the operating lever 9 is returned to a predetermined position, and the end 25a of the rod 25 located on the inclined surface 35 of the guide plate 34 is moved along the inclined surface 35 to move the plate member 23 and the movable plate member. The push-up bolts 33 are arranged at a predetermined position between 24 and are tightened until the head is separated from the lower surface of the movable plate member 23.

In the embodiment configured as described above, the movable plate member 23 can be kept in a state of being pushed up against the spring force of the coil spring 24 by the operating means such as the push-up bolt 33 of the jig 30, that is, the worker can move the movable plate member 23. Pushing up the plate member 23 can be achieved only by rotating the push-up bolts 23 in the upward direction, and the returning work can be safely performed by one person. Further, even if the end portion 25a of the rod 25 is separated from the plate member 22 and the movable plate member 23 of the holding device 21, since it is located on the inclined surface 35 of the guide plate 34 of the jig 30, the end portion 25a of the rod 25 is inclined. The plate member 22 and the movable plate member 23 can be moved by sliding on the surface 35, and the return operation can be performed relatively easily.

In addition, in this embodiment, the jig 30 is always mounted on the holding device 21 in order to quickly perform the returning work. However, instead of the constant mounting, the jig 30 may be mounted on the holding device 21 as needed. It can also be attached and detached appropriately.

〔The invention's effect〕

As described above, the present invention has a structure in which the rod that has been separated due to the rotation of the actuating lever is held between the fixed plate member and the movable plate member again by raising the push-up bolt and pushing up the movable plate member. Therefore, only one worker can safely perform the work of returning the safety device.

Also, because the push-up bolts are placed near the spring, the push-up force of the movable plate material against the force of the spring is the minimum required force that is approximately equivalent to the force of the spring. The return work of the emergency stop device can be performed relatively easily.

[Brief description of drawings]

1 and 2 are views for explaining an embodiment of an elevator emergency stop device according to the present invention. FIG. 1 is a front view showing a returning means provided in the embodiment, and FIG. 2 is shown in FIG. FIG. 4 is a side view of the returning means shown in FIG. 3, FIG. 3 is an explanatory view showing an example of an elevator emergency stop device, and FIGS. 4 and 5 are diagrams showing the main configuration of the elevator emergency stop device. FIG. 5 and 5 are side views. 1 ... Hoistway, 2 ... Machine room, 4 ... Counterweight (elevator), 4a ... Bracket, 5, 5a ... Stop device,
6 ... Governor, 7 ... Tension wheel, 8 ... Governor rope, 9
...... Actuating lever, 21 ...... Holding device (holding means), 22,23
…… Plate material, 24 …… Coil spring (force urging means), 25 …… Rod (interlocking body), 25a …… End part, 30 …… Jig (returning means), 31 …… Base, 33 …… Pushing up bolt.

Claims (1)

[Claims] 1. An operating lever rotatably provided in a vertical plane on an elevating body moving up and down in a hoistway; a stop device for stopping the elevating body in response to the rotation of the operating lever; A rod that interlocks with the lever, a fixed plate member that is fixed to the elevating body, a movable plate member that is rotatably connected to the fixed plate member, and a spring that biases the movable plate member in a direction approaching the fixed plate member. A holding means capable of holding the end portion of the rod by the fixed plate member and the movable plate member; and an endless device that is connected to the tip of the operating lever and hangs from a machine chamber formed above the hoistway. -Shaped governor rope, a speed governor installed in the machine room that captures the governor rope when the moving speed of the governor rope exceeds a predetermined speed, and is placed in the lower part of the hoistway to apply tension to the governor rope. In an emergency stop device for an elevator having a tension wheel, a lower plate arranged below the holding means, an upper plate arranged above the fixed plate member, and the lower plate and the upper plate connected to each other. A base composed of a vertical plate, a fixing bolt for fixing the base to the fixing plate member, and the upper plate portion of the base located in the vicinity of the spring are screwed together, and the head portion of the holding means is A push-up bolt that can come into contact with the lower surface of the movable member; and a guide plate that is provided on the base and has an inclined surface that can guide the end of the rod to the upper surface of the fixed plate member of the holding means. Elevator emergency stop device.