JP4887026B2 - Elevator device and its safety device - Google Patents

Description

  The present invention relates to an elevator apparatus having a carriage and a counterweight that move up and down in a hoistway, and more particularly to a safety device thereof.

  Conventionally, if a maintenance person raises the car accidentally while riding on the car, the maintenance person may collide with the ceiling, and the maintenance person gets in the pit accidentally. When the car is lowered, maintenance personnel may collide with the car, and measures have been taken to prevent this. For example, in Patent Document 1 below, as a safety device, a descent prevention means is attached to the top of a spring shock absorber so as to be covered from above, and the counterweight or the car is prevented from descending beyond a predetermined position. Has been proposed.

JP 2003-155176 A (FIG. 1 etc.)

  However, the safety device described in the above-mentioned Patent Document 1 is configured to be attached to the shock absorber by inserting the opening of the lowering prevention means into the spring shock absorber and inserting a rod-shaped stopper between the wire diameters of the springs. It has become. Accordingly, when the outer diameters of the shock absorbers to be used, such as the shock absorber for the car and the shock absorber for the counterweight, are different from each other, it is necessary to provide a descent preventing means adapted to each outer diameter. Moreover, in the shock absorbers other than the spring shock absorbers, it is difficult to attach the lowering prevention means because the rod-shaped stopper cannot be inserted.

  The objective of this invention is providing the safety device which can be applied with respect to various shock absorbers, and an elevator apparatus provided with the same.

  In order to achieve the above object, the present invention is a safety device that is disposed below a counterweight of an elevator and restricts the descent of the counterweight, and is placed on an upper surface of a shock absorber provided below the counterweight. The lowering prevention means is provided opposite to the lower surface of the counterweight, and the lowering prevention means is slidable in the vertical direction along a guide bar or a counterweight guide rail installed separately from the shock absorber.

  Further, in the safety device that is disposed below the elevator car and restricts the lowering of the car, the lowering is placed on the upper surface of a shock absorber provided below the car and facing the lower surface of the car Preventing means is provided, and the descending preventing means is slidable in the vertical direction along a guide bar or a car guide rail installed separately from the shock absorber.

  According to the present invention, a safety device applicable to various shock absorbers and an elevator apparatus including the safety device can be provided.

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

  FIG. 1 is a schematic view of a safety device according to a first embodiment of the present invention, and FIG. 2 is a horizontal sectional view thereof. The safety device of the present embodiment is an elevator apparatus including a car and a counterweight that are arranged in a hoistway and move up and down along a pair of guide rails, and a shock absorber that is arranged below the car and the counterweight. In FIG. 3, the counterweight is provided to limit the lowering of the counterweight.

  Therefore, a specific configuration of the safety device of the present embodiment will be described. The safety device of the present embodiment has a lowering prevention means 1 facing the lower surface of the counterweight, and this lowering prevention means 1 is placed on the upper surface of a counterweight buffer 2 provided below the counterweight. Yes. Further, the lowering prevention means 1 includes a lower surface contact portion 1c placed on the upper surface of the counterweight buffer 2, a raised portion 1b extending vertically from the lower surface contact portion 1c, and a tip of the raised portion 1b. The upper surface contact part 1a facing the lower surface of the counterweight provided, and the rail connection part which connects between a pair of counterweight guide rails 3a and 3b are provided.

  Further, the rail connecting portion is composed of a connecting rod 1d and guide mechanisms 1e provided at both ends of the connecting rod 1d. Here, the guide mechanism 1e fulfills the function of allowing the lowering prevention means 1 to slide in the vertical direction along the counterweight guide rails 3a and 3b. Further, the upper surface contact portion 1a and the lower surface contact portion 1c are respectively attached to the upper and lower portions of the raised portion 1b, and the connecting rod 1d is attached at a predetermined height position of the raised portion 1b.

  Further, the height of the raised portion 1b is such that the height from the lower end of the counterweight buffer 2 to the upper end of the upper surface contact portion 1a when the counterweight collides with the upper surface contact portion 1a is higher than the height of the worker. The length is set to be high. Therefore, even when the balance weight is lowered for some reason, when the worker performs maintenance and inspection in the pit that is the bottom of the hoistway and in the vertical projection of the balance weight, the descent prevention means 1 Since the lowering of the counterweight is restricted by this, the danger that the worker will collide with the lower surface of the counterweight can be suppressed. Further, when the worker is carrying out maintenance and inspection on the car, even if the car rises for some reason, the descent prevention means 1 limits the descent of the counterweight. Can be prevented from colliding with the ceiling of the hoistway.

Next, a method for installing the safety device of the present embodiment at the time of maintenance inspection and installation of the elevator will be described. First, the connecting rod 1d of the lowering prevention means 1 is inserted between the counterweight guide rails 3a and 3b from the position above the counterweight buffer 2 with the connecting rod 1d being inclined with respect to the horizontal. Then, while the connecting rod 1d is rotated horizontally (or rotated) in accordance with the position where the inner surface of the opening of the guide mechanism 1e is engaged with the outer surface of the weighted guide rails 3a, 3b, the lower surface contact portion Lower 1c until it contacts the upper surface of the counterweight buffer 2.

  According to the present embodiment, the lowering prevention means 1 is moved up and down along the weighting guide rails 3a and 3b in accordance with the deformation of the counterweight buffer 2 while preventing the lowering prevention means 1 from being displaced in the horizontal direction. You can be guided. Even with shock absorbers with different outer diameters or shock absorbers other than spring shock absorbers, safety devices can be installed simply and reliably, resulting in higher efficiency and safety of elevator maintenance and inspection work. .

  Here, since the weight of the counterweight is generally set to be heavier than the weight of the car, it is a priority to consider the safety against the lowering of the counterweight. A safety device may be installed below the car. When the safety device is not used, such as during normal operation, it is removed so as not to hinder the traveling of the car and the counterweight.

FIG. 3 is a schematic view of a safety device showing a second embodiment of the present invention, and FIG. 4 is a horizontal sectional view thereof. The safety device of this embodiment is characterized in that the raised portion 1b and the rail connecting portion (specifically, the connecting rod 1d) can be disassembled and assembled by the mounting bolt 4.

  According to the present embodiment, when the safety device is not used, such as during normal operation, it is easy to disassemble the descent prevention means 1 and store it in the pit. In other words, the safety device can be stored in a narrow pit, which contributes to space saving of the hoistway dimensions.

  FIG. 5 is a schematic view of a safety device showing a third embodiment of the present invention, and FIG. 6 is a horizontal sectional view thereof. In the safety device of this embodiment, a plurality of holes are provided in the guide mechanism 1e or the connecting rod 1d, and the guide mechanism 1e and the connecting rod 1d can be selectively disassembled and assembled by the mounting bolts 5. . Therefore, in the lowering prevention means 1 of this embodiment, the length from the tip of one guide mechanism 1e to the tip of the other guide mechanism 1e can be adjusted according to the guide rail to be connected.

  Here, since the distance between the pair of car guide rails and the distance between the pair of counterweight guide rails 3a and 3b are usually different, the counterweight safety device is used as it is. It is difficult to apply to. However, according to the present embodiment, it is convenient that the same safety device can be used for the counterweight for the passenger car by appropriately selecting the attachment location of the guide mechanism 1e and the connecting rod 1d.

FIG. 7 is a schematic view of a safety device showing a fourth embodiment of the present invention. The safety device of the present embodiment has a lowering prevention means 6, a guide bar 7, and a guide support portion 8. And this guide support part 8 is provided with the opening part for supporting the guide bar 7 inside, and is installed in the internal diameter side of the buffer 2 for counterweights. Moreover, the raising part 6b and the lower surface contact part 6c of the descent | fall prevention means 6 have an opening part for inserting the guide rod 7 inside.

  Next, the installation method of the safety device in a present Example is demonstrated. First, the guide support portion 8 is already installed when the counterweight buffer 2 is installed. Then, the guide bar 7 is inserted into the opening portion of the guide support portion 8 when the other elevator equipment is installed or maintenance is inspected. Thereafter, the lower surface contact portion 6 c and the raised portion 6 b are inserted from above the guide rod 7, and lowered downward until the lower surface of the lower surface contact portion 6 c contacts the upper surface of the counterweight buffer 2.

  Here, with the descending prevention means 6 installed, if the distance between the lower surface of the upper surface contact portion 6a and the upper surface of the guide bar 7 is set to be larger than the stroke of the counterweight buffer 2, The buffer effect of the counterweight buffer 2 can be prevented from being impaired.

  Further, the guide rod 7 is inserted not only on the inner diameter side of the guide support portion 8 but also on the outer diameter side of the guide support portion 8 using the guide rod 7 having an opening on the inner diameter side. Such a configuration may be adopted. It is also conceivable to provide a safety device as described above below the car.

  According to the present embodiment, the lowering prevention means 6 can slide in the vertical direction along the guide bar 7 installed separately from the shock absorber, so that the positions of the counterweight guide rails 3a and 3b or the car guide rail Safety devices can be easily installed regardless of

  FIG. 8 is a schematic view of a safety device showing a fifth embodiment of the present invention. In the safety device of the present embodiment, unlike the above-described fourth embodiment, the plurality of guide support portions 12a and 12b are located on the outer diameter side of the counterweight buffer 10. Further, the plurality of guide rods 11a and 11b inserted into the plurality of guide support portions 12a and 12b are not inserted into the raised portion 9b but are inserted into the opening provided on the outer diameter side of the lower surface contact portion 9c. It is like that. In addition, at the height between the lower surface contact portion 9c and the upper surface contact portion 9a, the guide portion 13 is attached to the raised portion 9b, and the guide rods 11a and 11b are also provided in the opening provided in the guide portion 13. It is supposed to be inserted.

  Next, the installation method of the safety device in a present Example is demonstrated. First, the guide support portions 12a and 12b are installed on the counterweight buffer base 14 for mounting and fixing the counterweight shock absorber 10. Here, the guide support portions 12a and 12b may be installed at the time of installation of the counterweight buffer 10 or the like. Thereafter, the plurality of guide rods 11a and 11b are inserted into the openings provided in the plurality of guide support portions 12a and 12b and are erected. Then, the lower surface contact portion 9c and the guide portion 13 are inserted from above the guide rods 11a and 11b, and lowered downward until the lower surface of the lower surface contact portion 9c contacts the upper surface of the counterweight buffer 10.

As in the fourth embodiment, the guide rods 11a and 11b are not limited to be inserted into the inner diameter side of the guide support portions 12a and 12b.
You may employ | adopt the structure which inserts the guide rods 11a and 11b in the outer diameter side of the guide support parts 12a and 12b using 11b. Furthermore, of course, a safety device as described above may be provided below the car.

  According to the present embodiment, the safety device can be easily installed regardless of the position of the guide rail even in a shock absorber other than the spring shock absorber, for example, a hydraulic shock absorber.

It is the schematic of the safety device in the 1st Example of the present invention. It is a horizontal sectional view of FIG. It is the schematic of the safety device in the 2nd Example of this invention. FIG. 4 is a horizontal sectional view of FIG. 3. It is the schematic of the safety device in the 3rd Example of the present invention. FIG. 6 is a horizontal sectional view of FIG. 5. It is the schematic of the safety device in the 4th example of the present invention. It is the schematic of the safety device in the 5th Example of this invention.

Explanation of symbols

1, 6, 9 ... Lowering prevention means, 1 a, 6 a, 9 a... Upper surface contact portion, 1 b, 6 b, 9 b... Raised portion, 1 c, 6 c, 9 c. , 10 ... Balance weight buffer, 3a, 3b ... Balance weight guide rail, 4, 5 ... Mounting bolt, 7, 11a, 11b ... Guide rod, 8, 12a, 12b ... Guide support, 13 ... Guide, 14 ... shock absorber base.

Claims (13)

Is arranged below the elevator counterweight, the safety device to limit the descent of the counterweight, the lowering prevention means disposed on the upper surface of the shock absorber which is provided below the counterweight facing the lower surface of the counterweight Have
The lowering prevention means includes a flat plate-shaped lower surface contact portion, a raised portion extending in a vertical direction from the upper surface of the lower surface contact portion, an upper surface contact portion provided at the tip of the raised portion and facing the lower surface of the counterweight, A rail connecting portion that connects between a pair of guide rails of the counterweight;
The rail connecting part is provided in the raised part so as to be disassembled and assembled by a mounting bolt,
The lowering prevention means is installed on the upper surface of the shock absorber by bringing the lower surface of the lower surface contact portion into contact with the upper surface of the shock absorber in a state where the rail connecting portion is engaged with the guide rail of the counterweight. A safety device capable of sliding in a vertical direction along a weight guide rail. Is arranged below the elevator car, the safety device for limiting the downward movement of the car, the lowering prevention means facing the lower surface of the installed the car on the upper surface of the shock absorber that is provided under the cab Have
The lowering prevention means includes a flat plate-shaped lower surface contact portion, a raised portion extending in a vertical direction from the upper surface of the lower surface contact portion, an upper surface contact portion provided at the tip of the raised portion and facing the lower surface of the car, A rail connecting portion for connecting between a pair of guide rails of the car;
The rail connecting part is provided in the raised part so as to be disassembled and assembled by a mounting bolt,
The lowering prevention means is installed on the upper surface of the shock absorber by bringing the lower surface of the lower surface contact portion into contact with the upper surface of the shock absorber in a state where the rail connecting portion is engaged with the car guide rail. A safety device capable of sliding in a vertical direction along a guide rail. 3. The rail connecting portion according to claim 1 , wherein the rail connecting portion includes a connecting rod and a guide mechanism provided at an end of the connecting rod, and the guide mechanism or the connecting rod has a plurality of holes. A length of the rail connecting portion can be adjusted by selectively connecting the guide mechanism and the connecting rod from the plurality of holes by a mounting bolt according to a guide rail. Safety device. In a safety device that is disposed below the counterweight of the elevator and limits the lowering of the counterweight, the safety device is provided on the upper surface of a shock absorber provided below the counterweight, and the lowering prevention means that faces the lower surface of the counterweight. Have
The lowering prevention means includes a flat plate-shaped lower surface contact portion, a raised portion extending in a vertical direction from the upper surface of the lower surface contact portion, an upper surface contact portion provided at the tip of the raised portion and facing the lower surface of the counterweight, A guide support portion installed on the inner diameter side of the shock absorber and a guide bar supported by the guide support portion;
The lower surface contact portion and the raised portion have an opening for inserting the guide rod therein, and the length of the guide rod is the lower surface of the upper surface contact portion and the guide rod in a state where the lowering prevention means is installed. Is set so that the distance between the upper surface of the shock absorber is larger than the stroke of the shock absorber,
The lowering prevention means inserts the lower surface contact portion and the raised portion from above the guide rod supported by the guide support portion, and makes the lower surface of the lower surface contact portion contact the upper surface of the shock absorber. A safety device, characterized in that the safety device is installed on the upper surface of the door and is slidable in the vertical direction along the guide rod. In the safety device that is disposed below the elevator car and restricts the lowering of the car, the safety device is provided on the upper surface of a shock absorber provided below the car, and the lowering prevention means that faces the lower surface of the car. Have
The lowering prevention means includes a flat plate-shaped lower surface contact portion, a raised portion extending in a vertical direction from the upper surface of the lower surface contact portion, an upper surface contact portion provided at the tip of the raised portion and facing the lower surface of the car, A guide support portion installed on the inner diameter side of the shock absorber and a guide bar supported by the guide support portion;
The lower surface contact portion and the raised portion have an opening for inserting the guide rod therein, and the length of the guide rod is the lower surface of the upper surface contact portion and the guide rod in a state where the lowering prevention means is installed. Is set so that the distance between the upper surface of the shock absorber is larger than the stroke of the shock absorber,
The lowering prevention means inserts the lower surface contact portion and the raised portion from above the guide rod supported by the guide support portion, and makes the lower surface of the lower surface contact portion contact the upper surface of the shock absorber. A safety device, characterized in that the safety device is installed on the upper surface of the door and is slidable in the vertical direction along the guide rod. In a safety device that is disposed below the counterweight of the elevator and limits the lowering of the counterweight, the safety device is provided on the upper surface of a shock absorber provided below the counterweight, and the lowering prevention means that faces the lower surface of the counterweight. Have
The lowering prevention means includes a flat plate-shaped lower surface contact portion, a raised portion extending in a vertical direction from the upper surface of the lower surface contact portion, an upper surface contact portion provided at the tip of the raised portion and facing the lower surface of the counterweight, A plurality of guide support portions installed on the outer diameter side of the shock absorber and a plurality of guide bars supported by the guide support portions;
A guide portion having an opening into which the guide rod is inserted is attached to the raised portion, and an opening into which the guide rod is inserted is provided at the lower surface contact portion,
The lowering prevention means inserts the lower surface contact portion and the guide portion from above the plurality of guide rods supported by the plurality of guide support portions, and causes the lower surface of the lower surface contact portion to contact the upper surface of the shock absorber. The safety device is installed on the upper surface of the shock absorber and is slidable in the vertical direction along the guide rod. In the safety device that is disposed below the elevator car and restricts the lowering of the car, the safety device is provided on the upper surface of a shock absorber provided below the car, and the lowering prevention means that faces the lower surface of the car. Have
The lowering prevention means includes a flat plate-shaped lower surface contact portion, a raised portion extending in a vertical direction from the upper surface of the lower surface contact portion, an upper surface contact portion provided at the tip of the raised portion and facing the lower surface of the car, A plurality of guide support portions installed on the outer diameter side of the shock absorber and a plurality of guide bars supported by the guide support portions;
A guide portion having an opening into which the guide rod is inserted is attached to the raised portion, and an opening into which the guide rod is inserted is provided at the lower surface contact portion,
The lowering prevention means inserts the lower surface contact portion and the guide portion from above the plurality of guide rods supported by the plurality of guide support portions, and causes the lower surface of the lower surface contact portion to contact the upper surface of the shock absorber. The safety device is installed on the upper surface of the shock absorber and is slidable in the vertical direction along the guide rod. In an elevator apparatus including a car and a counterweight that are arranged in a hoistway and move up and down along a pair of guide rails, and a shock absorber that is disposed below the counterweight, the elevator apparatus is provided below the counterweight. A descent preventing means installed on the upper surface of the shock absorber and facing the lower surface of the counterweight;
The lowering prevention means includes a flat plate-shaped lower surface contact portion, a raised portion extending in a vertical direction from the upper surface of the lower surface contact portion, an upper surface contact portion provided at the tip of the raised portion and facing the lower surface of the counterweight, A rail connecting portion that connects between a pair of guide rails of the counterweight;
The rail connecting part is provided in the raised part so as to be disassembled and assembled by a mounting bolt,
The lowering prevention means is installed on the upper surface of the shock absorber with the lower surface of the lower surface contact portion in contact with the upper surface of the shock absorber in a state where the rail connecting portion is engaged with the counterweight guide rail, and An elevator device characterized by being slidable in a vertical direction along a guide rail. In an elevator apparatus including a car and a counterweight that are arranged in a hoistway and move up and down along a pair of guide rails, and a shock absorber that is arranged below the car, the elevator apparatus is provided below the car. A descent prevention means installed on the upper surface of the shock absorber and facing the lower surface of the car;
The lowering prevention means includes a flat plate-shaped lower surface contact portion, a raised portion extending in a vertical direction from the upper surface of the lower surface contact portion, an upper surface contact portion provided at the tip of the raised portion and facing the lower surface of the car, A rail connecting portion for connecting between a pair of guide rails of the car;
The rail connecting part is provided in the raised part so as to be disassembled and assembled by a mounting bolt,
The lowering prevention means is installed on the upper surface of the shock absorber by bringing the lower surface of the lower surface contact portion into contact with the upper surface of the shock absorber in a state where the rail connecting portion is engaged with the car guide rail. An elevator device characterized by being slidable in a vertical direction along a guide rail. In an elevator apparatus including a car and a counterweight that are arranged in a hoistway and move up and down along a pair of guide rails, and a shock absorber that is disposed below the counterweight, the elevator apparatus is provided below the counterweight. A descent preventing means installed on the upper surface of the shock absorber and facing the lower surface of the counterweight;
The lowering prevention means includes a flat plate-shaped lower surface contact portion, a raised portion extending in a vertical direction from the upper surface of the lower surface contact portion, an upper surface contact portion provided at the tip of the raised portion and facing the lower surface of the counterweight, A guide support portion installed on the inner diameter side of the shock absorber and a guide bar supported by the guide support portion;
The lower surface contact portion and the raised portion have an opening for inserting the guide rod therein, and the length of the guide rod is the lower surface of the upper surface contact portion and the guide rod in a state where the lowering prevention means is installed. Is set so that the distance between the upper surface of the shock absorber is larger than the stroke of the shock absorber,
The lowering prevention means inserts the lower surface contact portion and the raised portion from above the guide rod supported by the guide support portion, and makes the lower surface of the lower surface contact portion contact the upper surface of the shock absorber. An elevator apparatus, characterized in that the elevator apparatus is slidable in a vertical direction along the guide bar. In an elevator apparatus including a car and a counterweight that are arranged in a hoistway and move up and down along a pair of guide rails, and a shock absorber that is arranged below the car, the elevator apparatus is provided below the car. A descent prevention means installed on the upper surface of the shock absorber and facing the lower surface of the car;
The lowering prevention means includes a flat plate-shaped lower surface contact portion, a raised portion extending in a vertical direction from the upper surface of the lower surface contact portion, an upper surface contact portion provided at the tip of the raised portion and facing the lower surface of the car, A guide support portion installed on the inner diameter side of the shock absorber and a guide bar supported by the guide support portion;
The lower surface contact portion and the raised portion have an opening for inserting the guide rod therein, and the length of the guide rod is the lower surface of the upper surface contact portion and the guide rod in a state where the lowering prevention means is installed. Is set so that the distance between the upper surface of the shock absorber is larger than the stroke of the shock absorber,
The lowering prevention means inserts the lower surface contact portion and the raised portion from above the guide rod supported by the guide support portion, and makes the lower surface of the lower surface contact portion contact the upper surface of the shock absorber. An elevator apparatus, characterized in that the elevator apparatus is slidable in a vertical direction along the guide bar. In an elevator apparatus including a car and a counterweight that are arranged in a hoistway and move up and down along a pair of guide rails, and a shock absorber that is disposed below the counterweight, the elevator apparatus is provided below the counterweight. A descent preventing means installed on the upper surface of the shock absorber and facing the lower surface of the counterweight;
The lowering prevention means includes a flat plate-shaped lower surface contact portion, a raised portion extending in a vertical direction from the upper surface of the lower surface contact portion, an upper surface contact portion provided at the tip of the raised portion and facing the lower surface of the counterweight, A plurality of guide support portions installed on the outer diameter side of the shock absorber and a plurality of guide bars supported by the guide support portions;
A guide portion having an opening into which the guide rod is inserted is attached to the raised portion, and an opening into which the guide rod is inserted is provided at the lower surface contact portion,
The lowering prevention means inserts the lower surface contact portion and the guide portion from above the plurality of guide rods supported by the plurality of guide support portions, and causes the lower surface of the lower surface contact portion to contact the upper surface of the shock absorber. The elevator apparatus is installed on the upper surface of the shock absorber and is slidable in the vertical direction along the guide rod. In an elevator apparatus including a car and a counterweight that are arranged in a hoistway and move up and down along a pair of guide rails, and a shock absorber that is arranged below the car, the elevator apparatus is provided below the car. A descent prevention means installed on the upper surface of the shock absorber and facing the lower surface of the car;
The lowering prevention means includes a flat plate-shaped lower surface contact portion, a raised portion extending in a vertical direction from the upper surface of the lower surface contact portion, an upper surface contact portion provided at the tip of the raised portion and facing the lower surface of the car, A plurality of guide support portions installed on the outer diameter side of the shock absorber and a plurality of guide bars supported by the guide support portions;
A guide portion having an opening into which the guide rod is inserted is attached to the raised portion, and an opening into which the guide rod is inserted is provided at the lower surface contact portion,
The lowering prevention means inserts the lower surface contact portion and the guide portion from above the plurality of guide rods supported by the plurality of guide support portions, and causes the lower surface of the lower surface contact portion to contact the upper surface of the shock absorber. The elevator apparatus is installed on the upper surface of the shock absorber and is slidable in the vertical direction along the guide rod.

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