JP7077281B2 - Elevator safety device - Google Patents

Description

The present invention relates to an elevator safety device.

Elevators installed in buildings are generally of the sliding type, and when the car is raised, the counterweight is lowered, and when the car is lowered, the counterweight is raised. Therefore, if the car is raised during maintenance and inspection work in the pit at the bottom of the hoistway, the counterweight will be lowered and the counterweight will approach the pit. At this time, if the worker is in the vertical projection of the counterweight, there is a risk that the worker will be caught between the counterweight and the pit floor surface. For this reason, conventionally, as a means for preventing an operator from invading directly under the counterweight, a method of installing an intrusion inhibitor between the left and right guide rails of the counterweight has been adopted (for example, Patent Documents 1 and 1). 2).

Japanese Patent Application Laid-Open No. 2003-341950 JP-A-2010-202394

However, the width between the left and right balanced weight guide rails differs depending on the specifications of the elevator. For this reason, it is necessary to prepare different sizes of the conventional intrusion suppressors for different guide rail widths, which increases the cost.

The present invention has been made in view of such problems, and an object thereof is that elevators having different guide rail widths can be commonly used, and the safety of workers is ensured while suppressing costs. The purpose is to provide an elevator safety device that can be used.

In order to solve the above problems, the present invention relates to an elevator safety device including a cover extending in the left-right direction on the front side of the counterweight guide rail and a support portion for supporting the cover on the counterweight guide rail. The cover has a first cover supported by the balanced weight guide rail on the left side and a second cover supported by the balanced weight guide rail on the right side, and includes the first cover and the second cover. The facing portion of the above was inclined in the left-right direction from above to below.

According to the present invention, it is possible to provide an elevator safety device that can be commonly used even with different guide rail widths and can ensure the safety of an operator while suppressing costs.

A side view showing a schematic configuration of an elevator. The plan view which shows the installation place of the elevator safety device in Example 1. FIG. The perspective view which shows the structure of the elevator safety apparatus of Example 1. FIG. (A) is a perspective view showing the installation state of the elevator safety device when the width of the counterweight is standard, and (b) is simply the first cover and the second cover when the width of the counterweight is wide. In the perspective view showing the state in which the above is mounted at the same height, (c), when the width of the counterweight is wide, the mounting position of the first cover is changed upward and the mounting position of the second cover is changed downward. The perspective view which shows the state. (A) is a perspective view showing the installation state of the elevator safety device when the width of the counterweight is standard, and (b) is simply the first cover and the second cover when the width of the counterweight is narrow. (C) is a perspective view showing a state in which the two covers are mounted at the same height. In the case where the width of the counterweight is narrow, the mounting position of the first cover is changed downward and the mounting position of the second cover is changed upward. The perspective view which shows the state. The perspective view which shows the structure of the elevator safety apparatus of Example 2. FIG. A plan view of the facing portions of the first cover and the second cover of the third embodiment as viewed from above. A plan view of the facing portions of the first cover and the second cover of the fourth embodiment as viewed from the side. A plan view of the elevator safety device of the fifth embodiment as viewed from above.

Hereinafter, embodiments of the elevator safety device according to the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a schematic configuration of an elevator on which the elevator safety device of the present embodiment is mounted. As shown in FIG. 1, the elevator is configured by arranging a car 1 as a moving body and a counterweight 2 in a hoistway 5. The car 1 and the counterweight weight 2 are connected by a main rope 4, and the main rope 4 is wound around a hoist 3 and driven by the hoist 3. A pit 6 is formed at a position below the hoistway 5, and an operator 7 may inspect the equipment in the hoistway 5 in the pit 6.

FIG. 2 is a plan view showing an installation location of the elevator safety device of the present embodiment. As shown in FIG. 2, the elevator safety device of the present embodiment includes a cover 10 extending in the left-right direction on the front side of the counterweight guide rail 8 and a support portion 9 for supporting the cover 10 on the counterweight guide rail 8. I have. Since the front surface portion of the cover 10 is located in front of the vertical projection of the counterweight weight 2, there is an effect of preventing the operator 7 from invading the region directly below the counterweight weight 2. The support portion 9 is composed of a bracket 9a, a rail clip 9b, a bolt 9c, and the like, as will be described later.

Even if the cover 10 is in the pit 6, if it is too low or too high, the operator 7 may accidentally invade the cover 10. Therefore, the central portion of the elevator safety device in the height direction is the floor. It is desirable that it is about 1400 mm to 1600 mm from the surface. Further, the cover 10 (particularly, the front portion thereof) is arranged between the vertical projection of the car 1 and the vertical projection of the counterweight weight 2. Therefore, it is possible to prevent the elevator safety device from being damaged due to interference with the car 1 and the counterweight 2.

FIG. 3 is a perspective view showing the configuration of the elevator safety device of the first embodiment. As shown in FIG. 3, the cover 10 has a first cover (left side cover) 10a supported by the left balancing weight guide rail 8 and a second cover (right side cover) 10b supported by the right balancing weight guide rail 8. And, it is composed of. The facing portion between the first cover 10a and the second cover 10b is inclined in the left-right direction from the upper side to the lower side.

Further, the first cover 10a has an L-shaped shape having a front surface portion 10a1 extending widely in the left-right direction and a side surface portion 10a2 extending in the front-rear direction. Then, two upper and lower parts of the side surface portion 10a2 are fixed to the front end portions of the upper and lower brackets 9a by using bolts 9c. The bracket 9a is a member extending in the front-rear direction, and its rear end portion is fixed to the side surface of the counterweight guide rail 8 via a rail clip 9b. In this way, the bracket 9a is not L-shaped, the first cover 10a is L-shaped, the side surface portion 10a2 of the first cover 10a is fixed to the bracket 9a, and the front surface portion 10a1 of the first cover 10a is flattened. As a result, an extra protrusion in the front-rear direction is eliminated, and interference with the balance weight 2 and the like is prevented.

The second cover 10b also has the same configuration as the first cover 10a, and is supported by the counterweight guide rail 8 in the same manner. The cover 10 constituting the elevator safety device is divided in the front surface, and the left and right first covers 10a and second covers 10b can be used properly by turning over the same shape upside down. Therefore, parts can be shared and the manufacturing cost is significantly reduced.

Next, a method of adjusting the width of the elevator safety device when the distance between the left and right balancing weight guide rails 8 is different, that is, when the width of the balancing weight 2 is different will be described.

FIG. 4A is a perspective view showing an installed state of the elevator safety device when the width of the counterweight weight 2 is standard. At this time, the facing portions of the first cover 10a and the second cover 10b are located almost without gaps, and if the first cover 10a and the second cover 10b are mounted at the same height of the respective counterweight guide rails 8. good.

FIG. 4B is a perspective view showing a state in which the first cover 10a and the second cover 10b are simply attached at the same height when the balance weight 2 is wide. At this time, a gap J1 is generated in the facing portion between the first cover 10a and the second cover 10b.

FIG. 4 (c) is a perspective view showing a state in which the mounting position of the first cover 10a is changed upward and the mounting position of the second cover 10b is changed downward when the width of the counterweight weight 2 is wide. .. At this time, the facing portions of the first cover 10a and the second cover 10b are located with almost no gap.

As described above, according to the present embodiment, even when the width of the counterweight weight 2 is wider than the standard, the same elevator safety device as in the standard case can be used. In this embodiment, an example of a configuration in which the structure is inclined to the right from the upper side to the lower side is shown, but a configuration in which the structure is inclined to the left side from the upper side to the lower side may be used. Regardless of the configuration, the mounting height of the cover having a narrower shape than the lower part is raised at the upper side, and the mounting height of the cover having a wider shape than the lower part is lowered at the upper side. Can correspond to 2.

FIG. 5A is a perspective view showing an installed state of the elevator safety device when the width of the counterweight 2 is standard, as in FIG. 4A. At this time, the facing portions of the first cover 10a and the second cover 10b are located almost without gaps, and if the first cover 10a and the second cover 10b are mounted at the same height of the respective counterweight guide rails 8. good.

FIG. 5B is a perspective view showing a state in which the first cover 10a and the second cover 10b are simply attached at the same height when the width of the counterweight weight 2 is narrow. At this time, the right end portion of the first cover 10a and the left end portion of the second cover 10b overlap each other, causing a protrusion in the front-rear direction. Here, since the gap between the vertical projection of the car 1 and the vertical projection of the counterweight weight 2 is designed to be narrow from the viewpoint of space saving, when a protrusion occurs, the elevator safety device is used for the car 1 or the counterbalance weight. It may interfere with 2 and damage the elevator safety device. Therefore, it is desirable to avoid overlapping the first cover 10a and the second cover 10b.

In FIG. 5C, when the width of the counterweight 2 is narrow, the mounting position of the first cover 10a, which has a shape narrower than the lower part, is changed downward, and the upper part has a wider shape than the lower part. It is a perspective view which shows the state which changed the mounting position of the 2nd cover 10b upward.

As described above, according to the present embodiment, by changing the mounting height positions of the first cover 10a and the second cover 10b, the overlap between the first cover 10a and the second cover 10b can be eliminated. That is, even when the width of the counterweight 2 is narrower than the standard, the same elevator safety device as in the standard can be used.

FIG. 6 is a perspective view showing the configuration of the elevator safety device of the second embodiment. As shown in FIG. 6, in the present embodiment, among the front corner portions of each cover, the front corner portion where the angle formed by the inclination of the facing portion is an acute angle, specifically, below the front surface portion of the first cover 11a. And the upper corner of the front surface of the second cover 11b are notched. In this way, the acute-angled corners are obtuse-angled by the notches 11a3 and 11b3, so that the safety when the worker 7 hits the corners when attaching or detaching the elevator safety device can be enhanced. can.

FIG. 7 is a plan view of the facing portions of the first cover 12a and the second cover 12b of the third embodiment as viewed from above. As shown in FIG. 7, in this embodiment, by making a plurality of notches in the facing portions of the first cover 12a and the second cover 12b, a corrugated uneven shape extending in the vertical direction is provided and fitted in a staggered manner. It is composed. Therefore, even if it is a relatively simple means, the gap in the facing portion of each cover is suppressed, and the effect of strengthening the strength to prevent each cover from coming off or being damaged even if the operator 7 comes into contact with the cover is effective. Can be obtained. Since one of the covers having the same shape is inverted to form the first cover 12a and the second cover 12b, in the case of the configuration of this embodiment, the end portion of the cover in the front-rear direction slightly protrudes. However, compared to the overlap of the entire thickness of the front parts of the cover and the fixing of the covers with bolts or the like, the degree of protrusion is small, so that the cover does not interfere with the balance weight 2 or the like.

FIG. 8 is a plan view of the facing portions of the first cover 13a and the second cover 13b of the fourth embodiment as viewed from the side (right side or left side). As shown in FIG. 8, in the present embodiment, the facing portions of the first cover 13a and the second cover 13b are provided with uneven shapes not only in the vertical direction but also in the front-rear direction, and are configured to be fitted alternately. Therefore, the same effect as in Example 3 can be obtained by this example as well. Further, by increasing the pitch of the unevenness, it is possible to further reduce the protrusion of the cover facing portion.

FIG. 9 is a plan view of the elevator safety device of the fifth embodiment as viewed from above. As shown in FIG. 9, in this embodiment, an H-shaped clip is provided on the facing portion between the first cover 10a and the second cover 10b as a connecting member 14 for connecting the covers. As a result, the effect of strengthening the strength of each cover can be obtained without providing an uneven shape on the front surface of each cover. The connecting member 14 may be continuously provided from the upper end to the lower end of the front surface portion of the cover, but the effect of reinforcement can be sufficiently obtained even if the connecting member 14 is provided only partially.

The present invention is not limited to the above-mentioned Examples 1 to 5, and includes various modifications. Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Further, it is also possible to add / delete / replace a part of the configuration of each embodiment with another configuration.

1: Carriage 2: Balanced weight 3: Winding machine 4: Main rope 5: Hoistway 6: Pit 7: Worker 8: Balanced weight guide rail 9: Support 9a: Bracket 9b: Rail clip 9c: Bolt 10: Cover 10a: 1st cover 10a1: Front part 10a2: Side part 10b: 2nd cover 10b1: Front part 10b2: Side part 11a: 1st cover 11a3: Notch 11b: 2nd cover 11b3: Notch 12a: 1st cover 12b: 2nd cover 13a: 1st cover 13b: 2nd cover 14: Connection member

Claims (5)

A cover that extends to the left and right on the front side of the counterweight guide rail,
A support portion that supports the cover on the counterweight guide rail, and
In an elevator safety device equipped with
The cover has a first cover supported by the balanced weight guide rail on the left side and a second cover supported by the balanced weight guide rail on the right side.
An elevator safety device characterized in that the facing portion between the first cover and the second cover is inclined in the left-right direction from above to below. In the elevator safety device according to claim 1,
An elevator safety device characterized in that the first cover and the second cover are supported by the counterweight guide rail at different height positions. In the elevator safety device according to claim 1 or 2.
An elevator safety device characterized in that the facing portions of the first cover and the second cover are fitted to each other. In the elevator safety device according to claim 1 or 2.
An elevator safety device characterized in that a connecting member for connecting the covers to each other is provided at a portion facing the first cover and the second cover. In the elevator safety device according to claim 1 or 2.
An elevator safety device characterized in that, among the front corner portions of the first cover or the second cover, the front corner portion having an acute angle formed by an inclination of the facing portion is notched.

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