Machine hatch cover device and machine hatch partition device of elevator

Abstract

To provide a machine hatch cover device of an elevator capable of improving efficiency of the opening works of a machine hatch installed on a floor of a machine room.SOLUTION: A machine hatch cover device of an elevator according to an embodiment comprises a base fixed to a floor and including a base opening part overlapping the machine hatch, and a pair of covers covering the machine hatch. The cover is pivotably installed with respect to the base at each of a pair of edges of the machine hatch opposed to each other. The cover is pivotable with respect to the base between the closed position to cover the machine hatch and the open position to open the machine hatch.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The embodiments relate to an elevator machine hatch cover device and a machine hatch partition device.

Background Art

[0002] A hoist for raising and lowering an elevator car may be installed in a machine room provided at the upper part of a hoistway. A machine hatch for carrying in and out the hoist is provided on the floor of the machine room. The machine hatch is closed by a cover, but the cover is removed when carrying in or out equipment such as the hoist. In a state where the cover is removed, a handrail is installed around the machine hatch to prevent a worker in the machine room from falling.

[0003] Since the cover for closing the machine hatch is fixed with a large number of bolts, these bolts have to be removed when removing the cover, and there is a problem that the efficiency of the opening operation of the machine hatch is reduced.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the embodiments is to provide an elevator machine hatch cover device and a machine hatch partition device that can improve the efficiency of the opening operation of a machine hatch provided on the floor of a machine room.

Means for Solving the Problems

[0006] The machine hatch cover device of the elevator according to the embodiment is a device that covers a rectangular machine hatch provided on the floor of the machine room. The machine hatch cover device of the elevator includes a base fixed to the floor and including a base opening overlapping the machine hatch, and a pair of covers covering the machine hatch. The covers are rotatably provided with respect to the base at each of a pair of opposite edges of the machine hatch. The cover is rotatable with respect to the base between a closed position covering the machine hatch and an open position opening the machine hatch.

[0007] The machine hatch partitioning device of the elevator according to the embodiment includes the above-described machine hatch cover device of the elevator and a plurality of partitioning members extending from one cover to the other cover when the cover is positioned at the open position. The partitioning members are arranged above a pair of edges of the four edges of the machine hatch where the covers are not provided.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, with reference to the drawings, an elevator machine hatch cover device and a machine hatch partition device according to an embodiment of the present invention will be described. First, the hoist installed in the machine room of the elevator will be described.

[0010] As shown in FIG. 1, a hoist 2 is installed in the machine room 1. A traction sheave (not shown) is connected to the hoist 2, and a main rope 3 connected to a car and a counterweight (both not shown) is wound around the traction sheave. By the hoist 2 winding up the main rope 3, the car moves up and down in the hoistway 4 provided below the machine room 1.

[0011] The hoist 2 is fixed to the floor 5 of the machine room 1 via a machine beam structure 6. A machine hatch 7 is provided on the floor 5 of the machine room 1, and the hoist 2 is arranged above the machine hatch 7. The machine hatch 7 is an opening formed in a rectangular shape when viewed from above (see FIG. 3).

[0012] As shown in FIG. 1, a machine hatch cover device 10 (or a machine hatch partition device 40 described later) according to the present embodiment is provided on the machine hatch 7. In FIG. 1, the machine hatch 7 is closed by a cover 12 of the machine hatch cover device 10 described later. The main rope opening 24 described later is passed through by the main rope 3. The main rope 3 passing through the main rope opening 24 is connected to the car. The main rope 3 connected to the counterweight passes through an opening (not shown) provided at another position on the floor 5 of the machine room 1.

[0013] Next, the machine hatch cover device 10 of the elevator according to the present embodiment will be described with reference to FIGS. 2 to 7. The machine hatch cover device 10 of the elevator (hereinafter simply referred to as the machine hatch cover device 10) is a device for covering the rectangular machine hatch 7 provided on the floor 5 of the machine room 1.

[0014] The machine hatch cover device 10 includes a base 11, a cover 12, a closing holding part 13 (see FIG. 5), and an opening holding part 14 (see FIG. 4).

[0015] As shown in FIG. 2, the base 11 is fixed to the floor 5 of the machine room 1. More specifically, a reinforcing frame 8 is fixed to the floor 5 of the machine room 1, and the base 11 is fixed on the reinforcing frame 8. The reinforcing frame 8 is generally formed in a rectangular frame shape so as not to overlap the machine hatch 7. The structure of the reinforcing frame 8 is arbitrary.

[0016] As shown in FIG. 3, the base 11 includes a base opening 15. The base opening 15 overlaps the machine hatch 7 when viewed from above, and allows equipment such as the hoisting machine 2 or the machine beam structure 6 to pass through.

[0017] As shown in FIGS. 2 and 3, the base 11 may include a pair of first base members 16 and a pair of second base members 17. Each of the first base member 16 and the second base member 17 may be a plate-like member extending in an elongated shape. The first base member 16 is provided on two opposing edge portions 7a out of the four edge portions 7a, 7b that define the machine hatch 7. A shaft member 18 described later is fixed to the first base member 16. The second base member 17 is provided on the remaining two edge portions 7b. The above-described base opening 15 is defined by each first base member 16 and each second base member 17.

[0018] Each cover 12 is configured to cover a partial area of the machine hatch 7. Each cover 12 is generally formed to cover approximately half of the area of the machine hatch 7.

[0019] As shown in FIGS. 2 to 4, the cover 12 is rotatably provided on the base 11 at one of a pair of opposite edges 7a of the machine hatch 7. The cover 12 according to the present embodiment is rotatably provided on the corresponding first base member 16. More specifically, a shaft member 18 is provided between the cover 12 and the first base member 16, and the cover 12 is rotatable with respect to the first base member 16. The shaft member 18 may be configured like a hinge. For example, the shaft member 18 may be configured by alternately arranging a tube fixed to the first base member 16 and a tube fixed to the cover body 20, and pins inserted into each tube.

[0020] The cover 12 is rotatable with respect to the base 11 between a closed position (see FIG. 2) covering the machine hatch 7 and an open position (see FIG. 4) opening the machine hatch 7. As shown in FIG. 2, the upper surface of the cover 12 may be positioned horizontally at the closed position. As shown in FIG. 4, the upper surface of the cover 12 at the closed position may be positioned vertically when the cover 12 is positioned at the open position. The pair of covers 12 according to the present embodiment has a double-leaf structure.

[0021] As shown in FIG. 4, the cover 12 may include a cover body 20 and angle members 21 provided on both side portions of the cover body 20. The cover body 20 is a portion that covers the machine hatch 7. The cover body 20 is generally formed in a flat plate shape, and both side portions are bent to form side wall portions 22. The angle members 21 may extend in an elongated shape along the side wall portions 22. The angle members 21 may be steel bars having a rectangular frame shape in cross section, but the cross-sectional shape of the angle members 21 is arbitrary. The cover 12 is reinforced by the angle members 21, ensuring the mechanical strength of the cover 12. The angle members 21 may be fixed to the side wall portions 22 by bolts (not shown), or may be fixed by any means such as welding.

[0022] Each cover 12 includes a notch 23. Each notch 23 is provided at the edge of the cover body 20 on the side of the other cover 12. The notch 23 is formed at the edge opposite to the shaft member 18. The notch 23 may be formed in a rectangular shape when viewed from above. As shown in FIGS. 2 and 3, each notch 23 constitutes a main rope opening 24 through which the above-described main rope 3 passes when the cover 12 is positioned at the closed position.

[0023] As shown in FIG. 5, the closing holding portion 13 is configured to hold the cover 12 in the closed position. The closing holding portion 13 may include a closing holding bolt 25. The closing holding bolt 25 fixes the angle member 21 of the cover 12 to the corresponding second base member 17. The closing holding bolt 25 may pass through a bolt hole 26 provided in the angle member 21 from the inside of the angle member 21 and be screwed into a screw hole 27 of the second base member 17. In this case, a working hole 28 for inserting a bolt tightening tool T may be provided in the side wall portion 22 and the angle member 21 of the cover 12.

[0024] As shown in FIG. 6, the opening holding portion 14 is configured to hold the cover 12 in the open position. The opening holding portion 14 includes a support member 30, a lock member 31, and a receiving member 32. The support member 30 is fixed to the second base member 17. The lock member 31 is rotatably attached to the support member 30 at the base end portion. The lock member 31 includes a groove 33 provided at the tip end portion. The receiving member 32 is fixed to the angle member 21 of the cover 12. The receiving member 32 includes a holding pin 34, and the holding pin 34 of the receiving member 32 can be fitted into the groove 33 of the lock member 31. When the holding pin 34 of the receiving member 32 is inserted into the groove 33 of the lock member 31, the rotation of the cover 12 is restricted and the cover 12 is held in the open position.

[0025] Next, the machine hatch partitioning device 40 of the elevator according to the present embodiment will be described. The machine hatch partitioning device 40 of the elevator (hereinafter simply referred to as the machine hatch partitioning device 40) is a device for partitioning the periphery of the machine hatch 7 provided on the floor 5 of the machine room 1 of the elevator.

[0026] As shown in FIG. 4, the machine hatch partitioning device 40 includes the machine hatch cover device 10 described above and a plurality of partitioning members 41.

[0027] The partitioning member 41 extends from one cover 12 to the other cover 12 when the above-described cover 12 is positioned at the open position. The partitioning member 41 is disposed above a pair of edge portions 7b of the four edge portions 7a, 7b (see FIG. 3) that define the machine hatch 7 and where the cover 12 is not provided. In the present embodiment, the partitioning member 41 is disposed above the second base member 17. Each cover 12 and the partitioning member 41 partition the machine hatch 7 from the space around the machine hatch 7. This can prevent an operator in the machine room 1 from falling into the machine hatch 7.

[0028] The partitioning member 41 may include a handrail 42 formed in a rod shape. The handrail 42 may be formed in a cylindrical shape. A handrail hole 43 into which the corresponding handrail 42 can be inserted is provided on the back surface of the cover 12. The handrail hole 43 may be formed in the angle member 21 of the cover 12. When the covers 12 are each positioned at the open position, the corresponding handrails 42 are inserted into the respective handrail holes 43.

[0029] In the present embodiment, two of the four edge portions 7a, 7b of the machine hatch 7 are partitioned by the cover 12, and the remaining two edge portions 7b are partitioned by the handrail 42. When the cover 12 and the handrail 42 have a desired mechanical strength, the machine hatch partitioning device 40 can function as a machine hatch handrail device, and can further prevent an operator in the machine room 1 from falling into the machine hatch 7.

[0030] As shown in FIG. 7, the handrail 42 may be capable of being held on the back surface of at least one of the pair of covers 12. For example, the handrail 42 may be capable of being held on the back surface of each cover 12. The back surface corresponds to the lower surface of the cover body 20 when positioned at the closed position. More specifically, the handrail 42 may be held by the holding member 44 on the lower surface of each cover body 20. In this case, the handrail 42 may be disposed obliquely with respect to the angle.

[0031] Next, the operation of the present embodiment having such a configuration will be described. The machine hatch cover device 10 according to the present embodiment is opened when structures such as the hoist 2 and the machine beam structure 6 are carried into the machine room 1, or when structures such as the hoist 2 and the machine beam structure 6 are carried out from the machine room 1.

[0032] When opening the machine hatch 7, first, the closing holding portion 13 (see FIG. 5) that holds each cover 12 in the closed position (see FIG. 2) is removed. More specifically, the closing holding bolt 25 is loosened and removed.

[0033] Subsequently, each cover 12 is rotated and positioned at the open position (see FIG. 4). At this time, each cover 12 is positioned perpendicular to the base 11.

[0034] Next, each cover 12 positioned at the open position is held at the open position. More specifically, the locking member 31 of the open holding portion 14 (see FIG. 6) is rotated, and the holding pin 34 of the receiving member 32 is inserted into the groove 33 of the locking member 31. As a result, the locking member 31 is engaged with the receiving member 32.

[0035] In this way, the machine hatch 7 can be easily opened by the machine hatch cover device 10 according to the present embodiment.

[0036] Furthermore, when the cover 12 is positioned at the open position, a partition member 41 extending from one cover 12 to the other cover 12 may be attached to each cover 12. More specifically, the handrail 42 held on the back surface of the cover 12 may be removed and inserted into the handrail holes 43 provided on the back surface of each cover 12.

[0037] In this way, the machine hatch partitioning device 40 according to the present embodiment can partition the periphery of the machine hatch 7.

[0038] When closing the machine hatch 7, the reverse procedure may be performed. When positioning the cover 12 at the closed position, the locking member 31 of the open holding portion 14 is tilted onto the second base member 17. When the cover 12 is rotated to the closed position, the cover 12 abuts against a stopper (not shown). The open holding portion 14 may be housed in a gap formed between the second base member 17 and the cover 12. Alternatively, the open holding portion 14 may be removed when closing.

[0039] According to the present embodiment in this way, at each of a pair of opposing edge portions 7a of the machine hatch 7, a cover 12 covering the machine hatch 7 is rotatably provided on the base 11. The cover 12 is rotatable with respect to the base 11 between a closed position covering the machine hatch 7 and an open position opening the machine hatch 7. This eliminates the need to remove the cover 12 when opening the machine hatch 7. Therefore, the efficiency of the operation of opening the machine hatch 7 can be improved.

[0040] Also, according to the present embodiment, the cover 12 is held in the closed position by the closing holding portion 13. As a result, the cover 12 positioned in the closed position can be prevented from unexpectedly rotating. Further, the cover 12 positioned in the closed position can be prevented from vibrating due to the wind pressure generated by the ascending and descending of the car. For example, when the car ascends, the air pressure increases at the upper part of the hoistway 4, but when the car descends, the air pressure at the upper part of the hoistway 4 decreases. Also, the air pressure at the upper part of the hoistway 4 fluctuates when the ascending and descending car stops. Due to such air pressure fluctuations, an upward force or a downward force is applied to the cover 12. Therefore, the cover 12 may vibrate or generate noise. However, according to the present embodiment, since the cover 12 is held by the closing holding portion 13, the generation of noise caused by the vibration of the cover 12 can also be prevented. Therefore, the reliability of the machine hatch cover device 10 can be improved.

[0041] Also, according to the present embodiment, the cover 12 is held in the open position by the opening holding portion 14. As a result, the cover 12 positioned in the open position can be prevented from unexpectedly rotating. Therefore, the cover 12 can be prevented from falling, the reliability of the machine hatch cover device 10 can be improved, and the safety of the operator in the machine room 1 can be ensured.

[0042] Also, according to the present embodiment, each of the covers 12 includes a notch portion 23. As a result, when the cover 12 is positioned in the closed position, the notch portion 23 can form the main rope opening portion 24 through which the main rope 3 passes. Therefore, the main rope opening portion 24 can be easily formed.

[0043] Further, according to the present embodiment, when the cover 12 is positioned at the open position, a plurality of partition members 41 extend from one cover 12 to the other cover 12. The partition members 41 are disposed above a pair of edges 7b of the four edges 7a, 7b of the machine hatch 7 where the cover 12 is not provided. This makes it possible to partition the machine hatch 7 from the surrounding space. Therefore, it is possible to prevent an operator in the machine room 1 from falling into the machine hatch 7, and the safety of the operator can be improved. Further, the efficiency of the installation work of the partition members 41 after removing the cover can be improved.

[0044] Further, according to the present embodiment, the partition member 41 includes a handrail 42 formed in a rod shape. When the cover 12 is positioned at the open position, the corresponding handrail 42 is inserted into the handrail hole 43. This makes it possible to improve the mechanical strength of the partition member 41 for partitioning the machine hatch 7 from the surrounding space. Therefore, it is possible to further prevent an operator in the machine room 1 from falling into the machine hatch 7, and the safety of the operator can be further improved.

[0045] Further, according to the present embodiment, the handrail 42 can be held on the back surface of at least one of the pair of covers 12. This makes it possible to secure a storage location for the handrail 42 when the cover 12 is positioned at the closed position. Therefore, it is possible to eliminate the need to separately secure a storage location for the handrail 42 in the machine room 1 and prevent the loss of the handrail 42. Further, the mechanical strength of the cover 12 can be improved by the handrail 42 held on the back surface of the cover 12. Therefore, it is possible to prevent the cover 12 positioned at the closed position from vibrating due to the wind pressure generated by the elevation of the car, and the reliability of the machine hatch cover device 10 can be improved.

[0046] In addition, in the above-described embodiment, a streamlined member (not shown) may be attached to the notch 23 that constitutes the main rope opening 24. The streamlined member may have a streamlined shape with respect to the airflow passing through the main rope opening 24. By doing so, it is possible to prevent the cover 12 positioned at the closed position from vibrating due to the air pressure fluctuations above the hoistway 4, and it is possible to further prevent the generation of noise.

[0047] Also, in the above-described embodiment, an example in which the partition member 41 includes the handrail 42 has been described. However, the present embodiment is not limited to this. For example, the partition member 41 may include a belt partition (not shown) instead of the handrail 42. In this case, the partition member 41 can be easily installed, and the machine hatch 7 and the surrounding space can be easily partitioned.

[0048] Also, in the above-described embodiment, an example in which the angle member 21 of the cover 12 is constituted by a section steel has been described. However, the present embodiment is not limited to this. For example, the angle member 21 may be constituted by a foldable member or a telescopic member.

[0049] According to the above-described embodiment, the efficiency of the opening operation of the machine hatch 7 provided on the floor 5 of the machine room 1 can be improved.

[0050] Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and its equivalent scope.

Description of Reference Numerals

[0051] 1: Machine room, 2: Hoisting machine, 3: Main rope, 5: Floor, 7: Machine hatch, 10: Machine hatch cover device, 11: Base, 12: Cover, 13: Blocking holding part, 14: Opening holding part, 15: Base opening, 23: Notch, 24: Main rope opening, 40: Machine hatch partition device, 41: Partition member, 42: Handrail, 43: Handrail hole

Claims

1. An elevator machine hatch cover device that covers a rectangular machine hatch provided on the floor of a machine room, including a base fixed to the floor and having a base opening overlapping the machine hatch, a pair of covers covering the machine hatch, and is provided with, at each of a pair of opposite edges of the machine hatch, the cover is rotatably provided with respect to the base, the cover is rotatable with respect to the base between a closed position covering the machine hatch and an open position opening the machine hatch, An elevator machine hatch cover device.

2. further comprising a closing holding portion for holding the cover in the closed position The elevator machine hatch cover device according to claim 1.

3. further comprising an opening holding portion for holding the cover in the open position The elevator machine hatch cover device according to claim 1, further comprising.

4. Each of the covers includes a notch provided at an edge on the side of the other cover, When the cover is positioned in the closed position, the notch constitutes a main rope opening through which the main rope passes. The elevator machine hatch cover device according to claim 1.

5. The elevator machine hatch cover device according to any one of claims 1 to 4, and when the cover is positioned in the open position, a plurality of partition members extending from one cover to the other cover, and is provided with, the partition members are arranged above a pair of edges of the four edges of the machine hatch where the cover is not provided. Machine hatch partition device for an elevator. **Claim 6** The partition member includes a handrail formed in a rod shape, A handrail hole is provided on the back surface of the cover, When the cover is positioned at the open position, the corresponding handrail is inserted into the handrail hole. The machine hatch partition device for an elevator according to claim 5. **Claim 7** The handrail can be held on the back surface of at least one of the pair of covers. The machine hatch partition device for an elevator according to claim 6.

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