JP2727901B2 - Elevator balance weight device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balancing device for an elevator which moves up and down a high-elevation step at high speed.

[0002]

2. Description of the Related Art FIGS.
No. 78 is a diagram showing a conventional counterweight of an elevator similar to the counterweight of an elevator, FIG. 4 is a vertical sectional view of a main part of a hoistway conceptually showing the elevator, and FIG. An enlarged front view of the counterweight of FIG. 4,
6 is an exploded perspective view showing an essential part of the counterweight of FIG. 5, FIG. 7 is an enlarged view of an essential part taken along the line AA of FIG. 5, and FIG.
It is a top view which shows the cover of the upper space of a balance weight. In the figure, (1) is an elevator hoistway, (2) is not shown, but is wound around a hoisting machine provided in a machine room above the hoistway (1), and the hoistway (1) The main rope (3) is connected to one end of the main rope (2) and is a car that moves up and down the hoistway (1). Covers are provided at upper and lower portions, respectively. Numeral (4) is a counterweight rail erected on the hoistway (1) apart from each other.

[0003] (5) is a counterweight arranged between the counterweight rails (4) and connected to the other end of the main rope (2),
A guide frame comprising a suspension frame (6) in which steel is assembled in a square shape, and a roller guide shoe mounted on each of the four corners of the suspension frame (6) and movably engaged with the counterweight rail (4).
(7) a weight piece with a recess (8), a plurality of which are arranged in a stacked state at a lower portion of the hanging frame (6), with the longitudinal end portions being respectively engaged with side portions of the hanging frame (6); The rope retaining plate (9), which is inserted between the attached weight pieces (8), and the longitudinal both ends are engaged with the side portions of the suspension frame (6), respectively. A plurality of weight pieces (10) are arranged in a stacked state on the upper side, and two longitudinal ends are respectively engaged with the sides of the suspension frame (6), and a plurality of weight pieces (10) are arranged in a stacked state on the weight pieces (10). The adjustment weight piece (11) and the lower beam (12) that forms the lower side of the suspension frame (6). (13) is a space formed between the upper beam of the suspension frame (6) and the uppermost adjustment weight piece (11).

In (14), a main rope (2) is connected to the upper end to form a suspension frame.
(6) a rod inserted into the upper beam, a compression coil spring (15) fitted to the lower end, and a nut (16) screwed into the lower end; (17)
A cover that covers the space (13) formed between the upper beam of the suspension frame (6) and the uppermost adjustment weight piece (11) .The cover covers the lower part of the rod (14) corresponding to the compression coil spring (15). Is provided with an inspection cover (18) consisting of a hinged door. (19) is a buffer pedestal provided at the center of the lower beam (12) of the lower side of the hanging frame (6) in the frontage direction, and is configured by fastening a plurality of members in a stacked state. (20) is a counterweight buffer provided on the bottom surface of the hoistway (1) and opposed to the buffer cradle (19);
Reference numeral 1) denotes a car shock absorber provided on the bottom surface of the hoistway (1) and opposed to the car (3).

[0005] (22) is a suspension joint body composed of a suspension rope which is connected to the car (3) and the suspension weight (5) at both ends thereof and is disposed so as to form a downwardly curved portion in the hoistway (1). (23) is connected to the balance weight (5) end of the suspension joint body (22) at the lower end, inserted into the cleat plate (9) and fastened to form a recess in the weight piece with recess (8). Rod (24) is the hoistway
(1) A suspending vehicle that is provided on the bottom so as to be vertically displaceable, is placed in a state of straddling the hanging curved portion of the suspending joint (22), and applies tension to the suspending joint (22).

[0006] The conventional counterweight device for an elevator is constructed as described above, and when the main rope (2) elongates due to aging, the counterweight buffer for the lowering of the counterweight (5) at the lowest position. Some members of the buffer pedestal (19) are removed to keep the gap between (20) and the buffer pedestal (19) at a predetermined value. If the gap between the counterweight buffer (20) and the buffer cradle (19) cannot be maintained at a predetermined value even when all the members of the buffer cradle (19) are removed, the main cable may be removed. (2)
The nut (16) of the rod (14) to which is connected is further screwed in, so that the gap between the counterweight buffer (20) and the buffer cradle (19) is maintained at a predetermined value.

The weight difference between the car side (3) and the balance weight (5) side of the main rope (2) depending on the position of the car (3) in the hoistway (1) is compensated by the balance bar (22). Is done. Then, when elongation due to aging occurs in the balancing joint body (22), the nut of the balancing rod (23) is retightened to absorb the aged elongation.

Further, the speed is 300 US / min, and the ascent / descent stroke is 150.
In a high-speed elevator that exceeds rice, the weight pieces with recesses (8) are arranged in a stacked state, a balancing rod (23) is placed in the recess, and the end of the balancing joint body (22) is balanced. (Five)
In the thickness direction, the weight of the counterweight (5) is made as close as possible to the center of the thickness of the counterweight (5), so that the unbalanced load exerted on the counterweight (5) by the counterweight (22) is reduced. Furthermore, when the car (3) and the counterweight (5) pass each other, to prevent the generation of wind noise due to the pressure difference, the balance frame (6) of the counterweight (5) and the upper beam and the top adjustment weight A cover (17) is provided to cover a space (13) formed with the piece (11).
The cover (17) is provided with an inspection cover (18) consisting of a hinged door for retightening the nut (16) at the lower end of the rod (14).

[0009]

SUMMARY OF THE INVENTION In a conventional elevator weight device as described above, a weight piece with a recess is provided.
Because of the provision of (8), the center of gravity of the counterweight (5) is shifted with respect to the counterweight rail (4). As a result, an offset load is generated in the counterweight (5), and a horizontal reaction force acts on the guide (7). In addition, as the weight (5) rises, the weight of the balancing weight (5) of the balancing ball (22) increases, but the weight (5) of the balancing ball (22) increases. The unbalanced load occurs on the weight (5) due to the weight of the guide (7).
A horizontal reaction force acts on.

Due to the horizontal reaction force of such a guide (7), a guide is used in a high-speed, high-elevation stroke elevator.
(7) has a problem in that abrasion occurs at an early stage, noise increases, and noise is transmitted to a building provided with an elevator via a counterweight rail (4).

In addition, after tightening the suspension frame (6) of the counterweight (5), the rod (14) at the upper end and the nut (16) at the lower end from the working position on the car (3), careless inspection is performed. If the cover (18) is forgotten to be closed, there is a problem that the inspection cover (18) is damaged when the car (3) and the counterweight (5) pass each other. In addition, the guide (7) by the horizontal reaction force of the guide (7)
Guides to avoid premature wear and noise
(7) may be enlarged. However, there is a problem that the space required for the hoistway (1) is increased by increasing the size of the guide (7).

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and has a balance weight device for an elevator in which a horizontal reaction force of a guide tool by a balance member is not generated regardless of the position of the balance weight. It is another object of the present invention to obtain a counterweight device for an elevator in which an inspection cover of the counterweight does not protrude from the counterweight outer surface.

[0013]

According to a first aspect of the present invention, there is provided a balance weight device for an elevator, which is assembled in a frame shape having an empty space and a guide is mounted at a corner. The counterweight is engaged with the upper edge of the counterweight and a fastening portion is disposed in an upper space, and is disposed at a position where no moment is generated with respect to the center of gravity of the counterweight, and the counterweight is suspended. A plurality of main ropes and a plurality of suspensions which are inserted through the lower beam of the counterweight and have a fastening portion disposed in the lower space, and are suspended from a position where no moment is generated with respect to the center of gravity of the counterweight. The joint body and a cover for covering the void of the counterweight, provided with a round hole provided on one side of the edge and one long hole long in the direction of disengagement movement of the round hole on the other side of the edge. It is located in the opening and has a headed screw through the Daruma hole and the oblong hole More and entered into a cover plate is provided in the cover.

[0014]

[Action] In the present invention of claim 1, wherein the configured the invention as described above, one to the center of gravity of the Rigoomori at a position where the moment does not occur, with fishing if weight is suspended by the main rope, Tsurigo The suspension joint is suspended at a position where no moment is generated at the center of gravity of the weight. In addition, it is arranged on the cover that covers the space of the counterweight and covers the opening of the cover corresponding to the fastening part of the main rope and the fishing rod, and is fastened to the cover by the head screw through the Daruma hole and the long hole. At the time of inspection, the cover plate thus released is disengaged from the burrow, and is rotated along the vertical plane via the long-headed screw to open the fastening portion of the main rope and the hanging joint.

[0015]

[Embodiment 1 ] 1 to 3, one shows an embodiment, partial front view of the elevator suspension if weight device 1 which corresponds to the main part of the aforementioned FIG. 5, the cover 6 is Figure 1 of the present invention cover plate a perspective view of which is provided in FIG. 3 is a diagram to explain the open state of the cover plate of FIG. 6, also the other figures 1 to 3 has substantially the same configuration as that of FIG. 4 and FIG. 5 . In the figure, (4) corresponds to the hoistway (1).
The weight rails that are erected from each other, (5)
It is located between the weight rails (4) and connected to the main rope (2).
With the weights tied together, the steel material is assembled into a square shape.
The hanging frame (6) and the four corners of the hanging frame (6)
Roller guide movably engaged with the counterweight rail (4)
A guide (7) consisting of a shoe is attached to both sides of the suspension frame (6).
Ends are respectively engaged and several are arranged in a stack
Weight piece (10), which is provided below the hanging frame (6).
Shape the lower side of the lower frame (25) supporting the weight piece (10) and the lower frame (6).
The lower beam (12), which forms a void (26) between it and the lower frame (25),
And a girder (27) installed across the void (26)
It is configured. Although not shown, the hanging frame
(6) A space is formed between the upper beam and the uppermost adjustment weight piece.
Have been.

(19) The front beam of the lower beam (12) of the suspension frame (6)
A buffer pedestal at the center where multiple members are stacked
It is configured to be fastened in a spring state. (22) is both ends
Hoistway (1) connected to each basket (3) and counterweight (5)
From a hanging rope that is arranged with a sag
With a balanced joint body, the balanced weight (5) side is a balanced weight (5)
Are arranged at symmetrical positions on the left and right from the center in the width direction.
Have been. (23) is the balance of the joint body (22) at the lower end
(5) is connected to the lower beam (12) and the girder beam (27).
Balancing rod inserted and fastened and placed in the space (26)
It is. (28) is fastened to the lower beam (12) to balance the lower beam (12).
Hang the insertion hole of the rod (23), leaving the insertion part of the joint body (22).
The closing bracket, (29) is fastened to the hanging frame (6) and vacant (26)
Cover.

An opening (31) is provided on the cover (29) and arranged corresponding to a fastening portion of the balancing rod (23), and an opening (32) is arranged on the opening (31) and provided with a cover plate. A darling hole (33) is provided at each of three corners of the edge, and a slot (34) is provided at another corner of the edge. (35) is the Daruma hole (33) and slot (34) of the cover plate (32)
, And are head screws screwed into the cover (29).

Also in the embodiment of FIGS. 1 to 3, although not shown, a position where no moment is generated with respect to the center of gravity of the counterweight (5) in which a plurality of main ropes (2) are assembled,
That is, the counterweight (5) is suspended at a symmetrical position with respect to a vertical line passing through the center of gravity of the counterweight (5) of the upper beam of the lifting frame (6). Also, a plurality of hanging joints (22)
Are located at positions where no moment is generated with respect to the center of gravity of the assembled counterweight (5), i.e., symmetrically with respect to a vertical line passing through the center of gravity of the counterweight (5) of the cleat beam (27). Hanged from the weight (5).

Therefore, no eccentric load is generated in the counterweight (5) regardless of the position of the hoistway (1) in the hoistway (1) of the counterweight (5). Does not act on the guide (7). Therefore, the balance
Balance regardless of the hoistway (1)
There is no uneven load on the weight (5),
The horizontal reaction force of the
No. For this reason, when the elevator is traveling at high speed and high
Early wear due to horizontal reaction force of guide (7)
Can prevent the occurrence of blemishes and easily maintain the guide (7).
be able to. Noise due to wear of the guide (7) is also reduced.
Thus, the equipment environment of the elevator can be silenced.
Also, it is installed at the center of the lower beam (12) in the direction of the frontage of the suspension frame (6).
On both sides of the shock-absorbing cradle (19)
Are arranged. For this reason
Impeller (20) and balancing vehicle (24) can be easily and efficiently placed with good space efficiency
can do. In addition, due to aging, the fishing rod (2
If elongation occurs in 2), the space above the girder (27)
At (26), the nut of the balancing rod (23) is tightened.
The elongation of the hanging joint (22) is raised.

In the embodiment shown in FIGS. 1 to 3, a cover (29) for covering the space (26) of the hanging frame (6) is provided.
A cover plate (32) is disposed in an opening (31) provided in (29) and corresponding to the fastening portion of the balancing rod (23). Then, the cover (2) is screwed with the head screw (35) through the darted holes (33) at the three corners of the edge of the cover plate (32) and the elongated hole (34) at the other corner of the edge.
9).

When the suspension joint (22) is stretched due to aging and the growth is increased,
When inspecting the fastening part of the balancing rod (23), the cover plate (32) is opened as described below without loosening the head screw (35) so as not to come off the cover (29). . That is,
The cover plate (32) has a slot (3)
4) is moved through. Then, in a state in which the engagement release by the darling hole (33) is released, the cover plate (32) is rotated along the vertical plane around the head screw (35) of the long hole (34), and the weight of the covering plate (32) is reduced by its own weight. The fastening portion of the suspension joint body (22) is held in the hanging position and is opened as shown by a chain line in FIG.

Accordingly, even if the cover plate (32) is forgotten to be closed when the fastening portion of the balancing rod (23) is inspected, the cover plate (32) does not project toward the car (3). Basket
When the counterweight (5) and the counterweight (5) pass each other, it is possible to prevent the occurrence of an accident in which the cover plate (32) is damaged.

Further, since the cover plate (32) can be moved to open the fastening portion of the suspension joint body (22) without detaching the head screw (35) from the cover (29), Joint rod (23)
There is no danger of dropping parts when inspecting the fastening portion of (1), and the safety of the inspection work of the fastening portion of the balancing rod (23) can be improved.

Incidentally, the structure of the inspection part by the cover (29) and the cover plate (32) is also provided at the fastening part of the main rope (2) on the upper part of the counterweight (5). The same operation as that of the fastening portion of ()) can be obtained.

[0025]

According to the first aspect of the present invention, as described above, a counterweight in which a guide is mounted at a corner portion, which is assembled into a frame having a space, and the counterweight. A plurality of main ropes which are engaged with the upper edge portion, the fastening portions are arranged in the upper space, and are arranged at positions where no moment is generated with respect to the center of gravity of the counterweight, and the counterweight is suspended, A plurality of suspension joints that are inserted through the lower beam of the suspension weight, are disposed in the lower space, and are suspended from a position where no moment is generated with respect to the center of gravity of the suspension weight, and A long hole provided in one side and a long hole in the direction of disengagement movement of the round hole on the other side of the edge portion is provided, and is disposed in an opening of a cover that covers a space of the counterweight, A cover plate fastened to the cover by a screw with a head through the Daruma hole and the long hole is provided. It is intended.

Thus, the balance weight is suspended by the main rope at a position where no moment is generated at the center of gravity of the balance weight, and the suspension joint body is suspended at a position where no moment is generated at the center of gravity of the balance weight. Is given. In addition, a cover plate that is disposed on the cover that covers the empty space of the balance weight and that covers the opening of the cover corresponding to the fastening portion of the balance joint body is provided with a head screw through the daruma hole and the elongated hole. Fastened to the cover. Then, at the time of inspection of the fastening portion of the main rope and the hanging joint, the engagement by the darling hole is released, and the head plate screw is not separated from the cover. The main rope and the joint of the hanging joint are opened. Therefore, the lifting position of the hoistway
No matter what the balance weight will be,
Guide generated by horizontal reaction force due to unbalanced load
It reduces the wear of the tool, facilitates the maintenance of the guide, and
Noise due to wear of guides is reduced, and elevator equipment
This has the effect of silencing the border. Further, there is an effect that the inspection work of the fastening portion of the main rope and the hanging joint is facilitated and made safe.

[Brief description of the drawings]

FIG. 1 is a front view of an essential part of an elevator counterweight device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a cover plate provided on the cover of FIG . 1;

FIG. 3 is a diagram illustrating an open state of a cover plate of FIG . 2 ;

FIG. 4 shows a conventional counterweight device for an elevator .
In the figure, the vertical section of the main part of the hoistway conceptually showing the elevator device
Sectional view .

FIG. 5 is an enlarged front view of the counterweight of FIG . 4 ;

FIG. 6 is an exploded perspective view showing a main part of the counterweight shown in FIG . 5;
FIG .

FIG. 7 is an enlarged view of a main part in cross section taken along line AA of FIG . 5 ;

8 shows a cover of the head space of the counterweight of FIG . 5;
FIG .

[Explanation of symbols]

2 Main rope 5 Suspended weight 7 Guide 12 Lower beam 13 Empty space 19 Shock basin 22 Suspended joint body 26 Empty space 27 Tether beam 29 Cover 31 Opening 32 Covering plate 33 Round hole 34 Slotted hole 35 Head screw

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-158587 (JP, A) JP-A 57-178068 (JP, U) JP-A 46-80 (JP, U)

Claims (1)

(57) [Claims] (1) Assembled in a frame shape having an empty space,
A balance weight with a guide and this balance weight
A fastening portion is disposed in the space above and engaged with the upper edge portion
Do not generate a moment with respect to the center of gravity of the balance weight.
Multiple pieces that are placed at the right position and suspend the balance weight
Of the main rope and the lower beam of the counterweight
The center of gravity of the counterweight is arranged with a fastening part in the space
From a position that does not produce a moment with respect to
A hanging joint of a book and a hole and a hole provided on one side of the edge
And on the other side of the edge,
Opening of the cover that is provided with one long slot and covers the space
Is placed in the part, and the head is attached through the above Daruma hole and slot.
And a cover plate fastened to the cover by a handle.