JP2017019580A - Support structure body of elevator winch and renewal method of elevator winch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support structure body of an elevator winch by which an existing machine beam is effectively utilized to shorten work time for renewal.SOLUTION: A support structure body 20 of an elevator winch comprises: two existing machine beams 30 installed on a floor 7a of a machine room 7 which support a winch 6a for 1:1 roping; new machine beams 40 installed on the floor 7a of the machine room 7 which are installed on the side of the existing machine beams 30; and a new machine bed 41 to which a winch 6b for 2:1 roping is attached. The new machine bed 41 is supported by the two existing machine beams 30 and the new machine beams 40.SELECTED DRAWING: Figure 3

Description

  Embodiments described herein relate generally to an elevator hoisting machine support structure and an elevator hoisting machine renewal method.

  2. Description of the Related Art Conventionally, there has been known an elevator apparatus in which a car and a counterweight device are connected by a main rope, and the car is moved up and down by hoisting the main rope with a hoisting machine. The hoisting machine is often installed in the machine room.

  The main rope may be connected to the car and the counterweight device by a 1: 1 roping method, or may be connected to the car and the counterweight device by a 2: 1 roping method. Due to the difference in the roping method, the support structure of the hoisting machine for installing the hoisting machine on the machine room floor is different.

  14 and 15 show a supporting structure 50 of the hoisting machine in the case of the 1: 1 roping method. As shown in FIGS. 14 and 15, the support structure 50 of the hoisting machine in the case of the 1: 1 roping method includes two machine beams 30 arranged in parallel with each other and a 1: 1 roping machine. And a machine bed 31 to which the hoisting machine 6a is attached. An opening 7b for allowing the main rope 4 to pass through is provided in the floor 7a of the machine room. With such a configuration, the main rope 4 wound around the traction sheave 8a connected to the hoisting machine 6a passes through the opening 7b and is connected to the car and the counterweight. In the form shown in FIGS. 14 and 15, the main rope 4 is also wound around the sora sheave 51, and the position of the main rope 4 is adjusted to match the position of the car and the counterweight. In addition, the code | symbol 32 shown in FIG. 15 has shown the cinder concrete 32 which embeds the machine beam 30. FIG.

  On the other hand, the supporting structure 60 of the hoisting machine 6b in the case of the 2: 1 roping method is shown in FIGS. As shown in FIGS. 16 and 17, the support structure 60 of the hoisting machine 6 b in the case of the 2: 1 roping method includes two machine beams 61 arranged in parallel to each other and 2: 1 roping. And a machine bed 62 to which the hoisting machine 6b is attached. Among these, one machine beam 61 is provided with a pair of rope hitches 63 that support both ends of the main rope 4. Each rope hitch 63 is attached with a shackle rod 64 for fixing the end of the unit rope 4a constituting the main rope 4. The floor 7a of the machine room is provided with openings 7c and 7d for allowing the main rope 4 to pass therethrough. With such a configuration, the main rope 4 wound around the traction sheave 8b connected to the hoist 6b passes through the opening 7c and is wound around the sheave of the car and the sheave of the counterweight. The main rope 4 extends from the sheave of the car and the sheave of the counterweight through the opening 7d to the rope hitch 63, and both ends of the unit rope 4a constituting the main rope 4 are fixed to the shackle rod 64, respectively. Is done. In addition, the code | symbol 65 shown in FIG. 17 has shown the cinder concrete which embeds the machine beam 61. FIG.

  In any of the roping methods described above, the machine beam is attached to the machine room floor with anchor bolts. Cinder concrete is placed on the floor, and the lower half of the machine beam is embedded in the cinder concrete. In this way, the machine beam is fixed to the machine room floor.

  By the way, when the elevator apparatus is renewed, the 1: 1 roping method may be changed to the 2: 1 roping method. In this case, the hoisting machine for 1: 1 roping is replaced with the hoisting machine for 2: 1 roping. Accordingly, the support structure for the hoisting machine is changed from the structure shown in FIGS. 14 and 15 to the structure shown in FIGS. 16 and 17. For this reason, the machine beam (machine beam 30 shown in FIGS. 14 and 15) supporting the hoisting machine for 1: 1 roping becomes unnecessary. Since it is common to remove equipment and members that are no longer needed after renewal, such unnecessary machine beams are forced to be removed.

JP 58-207277 A Japanese Utility Model Publication No. 1-76880

  However, as described above, since the machine beam is embedded in the cinder concrete, the cinder concrete is removed when the machine beam is removed. It takes a lot of time to remove cinder concrete. For this reason, there was a problem that the efficiency of the renewal work was reduced. Moreover, when removing cinder concrete, there is a problem that vibration and noise are generated.

  The present invention has been made in view of the above points, and is used for an elevator hoisting machine support structure and an elevator that can effectively use an existing machine beam to shorten the work time during renewal. It aims at providing the renewal method of a winding machine.

  The elevator hoisting machine support structure according to the embodiment is provided on the elevator machine room floor and supports the 2: 1 roping hoisting machine renewed from the 1: 1 roping hoisting machine. This support structure is provided on the machine room floor, two existing machine beams supporting the 1: 1 roping hoist, and a new machine provided on the machine room floor and in parallel with the existing machine beam. And a new machine bed to which a 2: 1 roping hoist is attached. The new machine bed is supported by two existing machine beams and a new machine beam.

  The elevator hoisting machine renewal method according to the embodiment is a 1: 1 roping hoisting machine supported by two existing machine beams provided on the elevator machine room floor. Renewal for hoisting machine. This renewal method includes a step of removing a hoist for 1: 1 roping from an existing machine beam, and a step of providing a new beam on the machine room floor in parallel with the existing machine beam. Further, the renewal method includes a step of providing a new machine bed on two existing machine beams and a new machine beam, and a step of attaching a hoisting machine for 2: 1 roping on the new machine bed. Yes.

FIG. 1 is a diagram showing a configuration of a 1: 1 roping system of an elevator apparatus before renewal according to a first embodiment of the present invention. FIG. 2 is a diagram showing the configuration of the 2: 1 roping method of the elevator apparatus after the renewal according to the first embodiment of the present invention. FIG. 3 is a plan view showing a support structure of the hoisting machine shown in FIG. 4 is a cross-sectional view taken along line AA of the support structure shown in FIG. FIG. 5 is a plan view showing a support structure according to the second embodiment of the present invention. 6 is a cross-sectional view taken along line BB showing the support structure shown in FIG. FIG. 7 is a plan view showing a support structure according to the third embodiment of the present invention. FIG. 8 is a plan view showing a support structure according to the fourth embodiment of the present invention. 9 is a cross-sectional view taken along the line CC of the support structure shown in FIG. FIG. 10 is a perspective view showing a general governor installation structure. FIG. 11 is a perspective view showing a governor installation structure of the support structure shown in FIG. FIG. 12 is a plan view showing a support structure in the fifth embodiment of the present invention. 13 is a cross-sectional view taken along the line DD showing the support structure shown in FIG. FIG. 14 is a plan view of a support structure in a conventional 1: 1 roping method. 15 is a cross-sectional view taken along line EE showing the support structure shown in FIG. FIG. 16 is a plan view showing a support structure in a conventional 2: 1 roping method. 17 is a cross-sectional view taken along line FF showing the support structure shown in FIG.

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

(First embodiment)
The elevator hoisting machine support structure (hereinafter simply referred to as a support structure) and the elevator hoisting machine renewal method according to the first embodiment will be described with reference to FIGS. 1 to 4. Here, first, an elevator apparatus including the support structure according to the present embodiment will be described.

  As shown in FIG. 1, an elevator apparatus 1 includes a car 3 that can be raised and lowered in a hoistway 2, a counterweight 5 that is connected to the car 3 via a main rope 4, and a main rope 4. A hoisting machine (elevating drive unit) 6a that elevates and lowers the car 3 and the counterweight 5. Among these, the hoisting machine 6 a is installed in a machine room 7 provided in the upper part of the hoistway 2. The main rope 4 is wound around a traction sheave 8a connected to the hoisting machine 6a. In such a configuration, the hoisting machine 6a rotationally drives the traction sheave 8a, whereby the main rope 4 is wound up and the car 3 and the counterweight 5 are moved up and down. A compen- sion rope 9 is connected to the car 3 and the counterweight 5, and the mass balance between the car 3 side portion of the main rope 4 and the counterweight 5 side portion is adjusted. Further, a tail cord 10 is connected to the car 3 and is connected to a control device (not shown) provided in the machine room 7.

  In FIG. 1, the main rope 4 is connected to the car 3 and the counterweight 5 by a 1: 1 roping method. That is, one end of the main rope 4 is fixed to the car 3 and the other end is fixed to the counterweight 5.

  FIG. 2 shows an elevator apparatus 1 in which a main rope 4 is connected to a car 3 and a counterweight 5 by a 2: 1 roping method. More specifically, a 2: 1 roping hoist 6 b is installed in the machine room 7. Further, a car sheave 11 is provided on the car 3, and a counterweight sheave 12 is provided on the counterweight 5. The main rope 4 is wound around a car sheave 11 and a counterweight sheave 12. In this case, both ends of the main rope 4 are supported by rope hitches 13 a and 13 b provided in the machine room 7. By adopting such a 2: 1 roping method, the hoisting torque required for the hoisting machine 6b is reduced compared to the hoisting machine 6a (see FIG. 1) when the 1: 1 roping method is adopted. The hoisting machine 6b can be downsized (ranked down).

  Next, details of the support structure 20 according to the present embodiment will be described below with reference to FIGS. 3 and 4. Here, the support structure 20 is for supporting the 2: 1 roping hoist 6b renewed from the 1: 1 roping hoist 6a. That is, the hoisting machine 6b after the 1: 1 roping type elevator apparatus 1 shown in FIG. 1 is renewed to the 2: 1 roping type elevator apparatus 1 shown in FIG. 2 is the support structure 20 according to the present embodiment. Can be favorably supported.

  As shown in FIGS. 3 and 4, the support structure 20 includes two existing machine beams 30 supporting the hoisting machine 6a for 1: 1 roping (see FIG. 1), and the existing machine beam 30 in parallel. There are provided two new machine beams 40 and a new machine bed 41 to which a 2: 1 roping hoist 6b is attached.

  The two existing machine beams 30 are provided to support the 1: 1 roping machine bed 31 and the 1: 1 roping hoist 6a before renewal (FIGS. 14 and 14). 15). The two existing machine beams 30 are arranged in parallel to each other. Further, as shown in FIG. 4, the existing machine beam 30 is embedded in the existing cinder concrete 32, and the lower half of the existing machine beam 30 is embedded. In this way, the two existing machine beams 30 are fixed to the floor 7a of the machine room 7. The existing machine beam 30 is preferably formed of a relatively strong H-section steel in order to support the 1: 1 roping hoist 6a before renewal.

  As shown in FIGS. 3 and 4, the two new machine beams 40 are juxtaposed on both sides of the two existing machine beams 30. That is, two existing machine beams 30 are arranged between two new machine beams 40. The two new machine beams 40 are arranged substantially parallel to each other. The two new machine beams 40 and the two existing machine beams 30 are arranged substantially parallel to each other. In the present embodiment, as shown in FIG. 4, the new machine beam 40 is embedded in the new cinder concrete 42, and the lower half of the new machine beam 40 is embedded. The new cinder concrete 42 is placed on the floor 7a in order to remove the portion of the existing cinder concrete 32 where the new machine beam 40 is disposed and then embed the new machine beam 40 attached to the floor 7a. It is concrete. In this way, two new machine beams 40 are fixed to the floor 7a of the machine room 7. The new machine beam 40 can be formed of the same H-shaped steel as the existing machine beam 30 described above. However, in order to reduce the cost of the support structure 20, for example, a U-shape as shown in FIG. It can be formed of a sheet metal member, a grooved steel, etc. The new machine beam 40 preferably has the same height as the existing machine beam 30 in order to stabilize the support of the new machine bed 41.

  The above-described new machine bed 41 to which the 2: 1 roping hoist 6b is attached is attached to and supported by the two existing machine beams 30 and the two new machine beams 40. Note that the new machine bed 41 in the present embodiment is mainly configured by two beam members 41 a (for example, H-shaped steel or the like) extending substantially parallel to each other in a direction orthogonal to the machine beams 30 and 40. The hoisting machine 6b is directly mounted on these two beam members 41a and attached to each beam member 41a. Thus, the installation height of the hoisting machine 6b installed on the floor 7a of the machine room 7 is reduced.

  Further, as shown in FIG. 4, the newly installed machine bed 41 is supported by the machine beams 30 and 40 via vibration-proof rubber 43. Thereby, the vibration of the hoisting machine 6b is suppressed from being transmitted to the floor 7a of the machine room 7 via the machine beams 30 and 40. Further, the new machine bed 41 is directly placed on the anti-vibration rubber 43, and the installation height of the hoisting machine 6 b installed on the floor 7 a of the machine room 7 is reduced.

  As shown in FIG. 3 and FIG. 4, on one new machine beam 40 of the two new machine beams 40, a pair of rope hitches (more specifically, supporting both ends of the main rope 4 wound by the hoisting machine 6b). Are provided with hitch plates) 13a and 13b. Thus, one new machine beam 40 alone supports each rope hitch 13a, 13b. More specifically, a shackle rod 14 for fixing the end of the unit rope 4a constituting the main rope 4 is attached to each rope hitch 13a, 13b. One end of the main rope 4 is connected to one rope hitch 13a via the shackle rod 14, and the other end of the main rope 4 is connected to the other rope hitch 13b via the shackle rod 14. .

  As shown in FIG. 3, the floor 7a of the machine room 7 is provided with an existing opening 7b through which the main rope 4 is passed in the 1: 1 roping method. The floor 7a is provided with new openings 7c and 7d through which the main rope 4 passes in the 2: 1 roping method. Among these, the new opening 7c is provided on the side of the traction sheave 8b connected to the hoisting machine 6b for 2: 1 roping. On the other hand, the new opening 7d is provided on the side of each rope hitch 13a, 13b. In FIG. 4, the existing opening 7b is not shown for the sake of clarity. The existing opening 7b may be filled with concrete or the like at the time of renewal.

  Next, the operation in the present embodiment having such a configuration will be described. Here, the hoisting machine 6a for 1: 1 roping supported by the two existing machine beams 30 fixed to the floor 7a of the machine room 7 is renewed to the hoisting machine 6b for 2: 1 roping. A method for renewing the hoisting machine will be described.

  First, the hoisting machine 6a for 1: 1 roping (see FIGS. 14 and 15) is removed from the machine bed 31 for 1: 1 roping. Subsequently, the 1: 1 roping machine bed 31 is removed from the existing machine beam 30. At this time, the two existing machine beams 30 are left without being removed from the floor 7a of the machine room 7.

  Subsequently, a portion of the existing cinder concrete 32 (see FIG. 15) that has been placed on the floor 7a is removed. At this time, portions of the existing cinder concrete 32 corresponding to the new openings 7c and 7d are also removed, and further, portions of the floor 7a of the machine room 7 corresponding to the new openings 7c and 7d are removed. The

  Next, two new machine beams 40 are provided on the floor 7 a of the machine room 7. In this case, first, the new machine beam 40 is attached to the floor 7a from which the existing cinder concrete 32 has been removed using anchor bolts or the like (not shown). At this time, the two new machine beams 40 are juxtaposed with the two existing machine beams 30. Next, around the new machine beam 40, new cinder concrete 42 is placed on the floor 7a, and the lower half of the new machine beam 40 is buried. At this time, the new cinder concrete 42 is placed so that the new openings 7c and 7d are formed. In this way, the new machine beam 40 is fixed to the floor 7a of the machine room 7, and the new openings 7c and 7d are formed.

  Thereafter, a pair of rope hitches 13a and 13b is attached to one new machine beam 40. The rope hitches 13a and 13b may be attached to the new machine beam 40 before being attached to the floor 7a, or after being attached to the floor 7a and before the new cinder concrete 42 is placed. The new machine beam 40 may be attached. And the shackle rod 14 is attached to each rope hitch 13a, 13b attached to the newly installed machine beam 40.

  After the two new machine beams 40 are provided, the new machine bed 41 is provided on the four machine beams 30 and 40. In this case, the new machine bed 41 is attached to the machine beams 30 and 40 via the anti-vibration rubber 43 and supported by the two existing machine beams 30 and the two new machine beams 40.

  In this way, the support structure 20 according to the present embodiment as shown in FIGS. 3 and 4 is obtained.

  Thereafter, the 2: 1 roping hoist 6b is mounted on the new machine bed 41 of the support structure 20. Then, the main rope 4 is wound around the traction sheave 8b connected to the hoisting machine 6b, and is also wound around the car sheave 11 and the counterweight sheave 12 (see FIG. 2). One end of the main rope 4 is supported by one rope hitch 13a, and the other end is supported by the other rope hitch 13b.

  In this way, the hoisting machine 6a for 1: 1 roping is renewed to the hoisting machine 6b for 2: 1 roping.

  As described above, according to the present embodiment, the new machine bed 41 to which the hoisting machine 6b for 2: 1 roping is attached is supported not only by the new machine beam 40 but also by the existing machine beam 30. As a result, the existing machine beam 30 can be effectively used to support the newly installed hoisting machine 6b, and the 1: 1 roping hoisting machine 6a is renewed to the 2: 1 roping hoisting machine 6b. In this case, the removal of the existing machine beam 30 can be omitted. For this reason, the removal work of the existing cinder concrete 32 can be reduced, and the efficiency of the renewal work can be improved. As a result, the existing machine beam 30 can be effectively utilized to shorten the work time during renewal.

  Further, according to the present embodiment, the two existing machine beams 30 support the new machine bed 41 together with the two new machine beams 40. Thus, the loads of the new machine bed 41 and the hoisting machine 6b can be received by the two existing machine beams 30 and the two new machine beams 40. For this reason, the load concerning each of the newly installed machine beam 40 can be reduced, and the shape of the newly installed machine beam 40 can be lowered to a light and inexpensive shape. Further, since the new machine bed 41 is supported by the four machine beams 30 and 40, the bending moment generated in the new machine bed 41 due to the load of the new machine bed 41 and the hoisting machine 6b can be reduced. As a result, the shape of the new machine bed 41 can be ranked down to a lightweight and inexpensive shape.

(Second Embodiment)
Next, an elevator hoisting machine support structure and an elevator hoisting machine renewal method according to a second embodiment of the present invention will be described with reference to FIGS. 5 and 6.

  The second embodiment shown in FIGS. 5 and 6 is mainly different in that one new machine beam and one existing machine beam adjacent to the new machine beam support the rope hitch. Other configurations are substantially the same as those of the first embodiment shown in FIGS. 5 and 6, the same parts as those in the first embodiment shown in FIGS. 1 to 4 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 5 and 6, in this embodiment, a pair of rope hitches 13 a and 13 b are provided on one new machine beam 40 and one existing machine beam 30 adjacent to the new machine beam 40. Is provided. That is, one new machine beam 40 and one existing machine beam 30 adjacent to the new machine beam 40 support the rope hitches 13a and 13b. The arrangement pitch of the shackle rods 14 attached to the rope hitches 13a and 13b according to the present embodiment (the pitch in the direction perpendicular to the machine beams 30 and 40) is the shackle rod according to the first embodiment shown in FIGS. 14 is narrower than the arrangement pitch. Thereby, the inclination of the unit rope 14a connected to each shackle rod 14 can be relaxed, and the life of the main rope 4 can be extended. In FIGS. 4 and 6, the unit rope 4a of the main rope 4 is shown to extend vertically in order to simplify the drawings.

  Thus, according to the present embodiment, one new machine beam 40 and one existing machine beam 30 adjacent to the new machine beam 40 support the rope hitches 13a and 13b. As a result, the existing machine beam 30 can be effectively utilized to support the rope hitches 13a and 13b. Further, the load received from the rope hitches 13a and 13b can be received by the new machine beam 40 and the existing machine beam 30. For this reason, the load applied to the new machine beam 40 can be reduced, and the shape of the new machine beam 40 can be lowered to a light and inexpensive shape.

  Further, according to the present embodiment, since the rope hitches 13a and 13b are supported by the new machine beam 40 and the existing machine beam 30, each rope hitch 13a and 13b is connected to the new machine beam 40 and the existing machine beam 30. Can be placed between. Thereby, the space required for installing the support structure 20 having the rope hitches 13a and 13b can be reduced. For this reason, even when the space between the newly installed machine beam 40 and the wall 7e of the machine room 7 cannot be sufficiently secured, the support structure 20 can be easily installed in the machine room 7.

(Third embodiment)
Next, an elevator hoisting machine support structure and an elevator hoisting machine renewal method according to a third embodiment of the present invention will be described with reference to FIG.

  In the third embodiment shown in FIG. 7, one new machine beam is provided on the machine room floor, and a new machine beam is provided on the side opposite to the other existing machine beam side with respect to one existing machine beam. The main difference is that a beam is provided, and the other configuration is substantially the same as that of the second embodiment shown in FIGS. In FIG. 7, the same parts as those of the second embodiment shown in FIGS. 5 and 6 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 7, in the present embodiment, one new machine beam 40 is provided on the floor 7 a of the machine room 7. The new machine beam 40 is disposed on the opposite side of the one existing machine beam 30 to the other existing machine beam 30 side. The two existing machine beams 30 and one new machine beam 40 are attached and supported by a new machine bed 41 to which a hoisting machine 6b for 2: 1 roping is attached.

  A pair of rope hitches 13 a and 13 b are provided on the two existing machine beams 30. That is, the two existing machine beams 30 support the rope hitches 13a and 13b. The rope hitches 13a and 13b are provided above the existing opening 7b provided in the floor 7a of the machine room 7 so that the main rope 4 wound by the hoisting machine 6a for 1: 1 roping passes therethrough. . In the present embodiment, a solacey (not shown) for adjusting the position of the main rope 4 is provided in the hoistway 2. Thus, the position of the main rope 4 of the 2: 1 roping method is adjusted so as to pass through the existing opening 7b used in the 1: 1 roping method.

  Thus, according to the present embodiment, the two existing machine beams 30 support the rope hitches 13a and 13b. Thus, the two existing machine beams 30 can be effectively used to support the rope hitches 13a and 13b. In addition, the number of new machine beams 40 can be reduced, and the total length of the new machine bed 41 can be shortened. For this reason, the weight reduction of the new machine bed 41 can be achieved.

  In the present embodiment, the rope hitches 13a and 13b are provided above the existing opening 7b. As a result, the main rope 4 can be passed through the existing opening 7b, and an additional opening (for example, the new opening 7d in FIGS. 3 and 5) can be omitted, thereby improving the efficiency of the renewal work. Can be improved. As a result, the existing opening 7b can be effectively used to shorten the work time during renewal.

(Fourth embodiment)
Next, an elevator hoisting machine support structure and an elevator hoisting machine renewal method according to a fourth embodiment of the present invention will be described with reference to FIGS.

  The fourth embodiment shown in FIGS. 8 to 11 is mainly different in that one of the newly installed machine beams has a governor mounting portion for mounting a governor. This is substantially the same as the first embodiment shown in FIG. 8 to 11, the same parts as those of the first embodiment shown in FIGS. 1 to 4 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 8 and 9, the present embodiment is configured such that a governor (governor) 44 is attached to one new machine beam 40. Here, the governor 44 is for stopping the car 3 when the lowering speed of the car 3 reaches a predetermined set speed.

  A general installation structure of the governor 44 will be described with reference to FIG. As shown in FIG. 10, a governor stand 45 is fixed to the floor 7 a of the machine room 7, and the governor 44 is installed on the governor stand 45. The governor stand 45 has a rope cylinder 45a through which a governor rope (not shown) wound around the sheave 44a is passed.

  The governor 44 in the present embodiment is not installed on the governor stand 45 as shown in FIG. That is, the new machine beam 40 has a governor mounting portion 46 for mounting the governor 44 as shown in FIG. The governor attaching portion 46 has a bolt hole (not shown) for attaching the governor 44, a hole (not shown) for allowing the governor rope to pass therethrough, and a rope cylinder 47. Among these, the rope cylinder 47 guides the governor rope wound around the sheave 44 a of the governor 44 into the hoistway 2.

  The governor 44 attached to the governor attaching portion 46 is disposed at the position where it was installed in the 1: 1 roping method. As a result, the new machine beam 40 on which the governor 44 is installed is outside the new machine beam 40 to which the rope hitches 13a and 13b shown in FIGS. 3 and 4 are attached (opposite to the existing machine beam 30 side). Side). The floor 7a of the machine room 7 and the existing cinder concrete 32 are provided with an opening (not shown) for allowing the governor rope to pass before renewal. In the present embodiment, this is provided in advance. The opening that is present can be used effectively.

  In the present embodiment, the rope hitches 13a and 13b are attached to one new machine beam 40 in the same manner as in the embodiments shown in FIGS. The governor 44 attached to the governor attaching part 46 is arrange | positioned below the rope hitch 13b in FIG.

  Thus, according to the present embodiment, the newly installed machine beam 40 has the governor mounting portion 46 for mounting the governor 44. Thus, the new machine beam 40 can have the function of the governor stand 45. For this reason, the governor stand 45 used conventionally can be made unnecessary.

(Fifth embodiment)
Next, the elevator hoisting machine support structure and the elevator hoisting machine renewal method according to the fifth embodiment of the present invention will be described with reference to FIGS.

  In the fifth embodiment shown in FIG. 12 and FIG. 13, the point is that one new machine beam and one existing machine beam adjacent to the new machine beam support the governor support. Differently, the other configuration is substantially the same as that of the fourth embodiment shown in FIGS. 12 and 13, the same parts as those in the fourth embodiment shown in FIGS. 8 to 11 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 12 and 13, the governor mounting portion 46 in the present embodiment includes a governor support base 48 that supports the governor 44. The governor support 48 is supported by one new machine beam 40 and one existing machine beam 30 adjacent to the new machine beam 40. The governor 44 in the present embodiment is arranged at a position different from the position before renewal as shown in FIG. For this reason, openings (not shown) for allowing the governor rope to pass through are newly formed in the floor 7a of the machine room 7 and the existing cinder concrete 32. In the example shown in FIG. 13, the rope cylinder 47 as shown in FIG. 11 is not provided, but the rope cylinder 47 may be provided.

  In the present embodiment, the rope hitches 13a and 13b are connected to one new machine beam 40 and one existing machine beam 30 adjacent to the new machine beam 40 in the same manner as the forms shown in FIGS. It is attached. The governor 44 described above is disposed below the rope hitch 13b in FIG.

  As described above, according to the present embodiment, one new machine beam 40 and one existing machine beam 30 adjacent to the new machine beam 40 support the governor support 48. As a result, the existing machine beam 30 can be effectively used to support the governor support 48. Further, the load received from the governor 44 can be received by the new machine beam 40 and the existing machine beam 30. For this reason, the load applied to the new machine beam 40 can be reduced, and the shape of the new machine beam 40 can be lowered to a light and inexpensive shape.

  According to the embodiment described above, the existing machine beam can be effectively used to shorten the work time at the time of renewal.

  Although several 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 scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof. Moreover, as a matter of course, these embodiments can be partially combined as appropriate within the scope of the present invention.

  4 ... main rope, 6a ... hoisting machine for 1: 1 roping, 6b ... hoisting machine for 2: 1 roping, 7 ... machine room, 7a ... machine room floor, 7b: Existing opening, 13a, 13b ... Rope hitch, 20 ... Support structure, 30 ... Existing machine beam, 40 ... New machine beam, 41 ... New machine bed, 44 ... Governor, 46 ... Governor mounting part, 48 ... Governor support

Claims (8)

  An elevator hoisting machine supporting structure provided on an elevator machine room floor for supporting a 2: 1 roping hoist renewed from a 1: 1 roping hoist, wherein the machine room Two existing machine beams provided on the floor and supporting the hoisting machine for 1: 1 roping, a new machine beam provided on the floor of the machine room and arranged in parallel with the existing machine beam, 2 A new machine bed to which the hoist for roping is mounted, and the new machine bed is supported by the two existing machine beams and the new machine beam Support structure for hoisting machine.   The machine room floor is provided with the two new machine beams, the two existing machine beams are disposed between the two new machine beams, and the new machine bed includes two existing machine beams and two The elevator hoisting machine support structure according to claim 1, wherein the elevator hoisting machine is supported by two new machine beams.   The rope further includes a pair of rope hitches that support both ends of the main rope that the hoist winds up, and one of the new machine beam and one of the existing machine beams adjacent to the new machine beam are each of the rope hitches. The elevator hoisting machine support structure according to claim 1 or 2, wherein the elevator hoisting machine is supported.   One new machine beam is provided on the machine room floor, and the new machine beam is provided on the opposite side of the one existing machine beam to the other existing machine beam. A support structure for an elevator hoist according to claim 1.   5. The rope hitch according to claim 4, further comprising a pair of rope hitches that support both ends of a main rope wound up by the hoisting machine, wherein the two existing machine beams support each of the rope hitches. Elevator hoist support structure.   The rope hitch is provided above an opening provided in the machine room floor so that a main rope wound up by the hoisting machine for 1: 1 roping passes therethrough. The elevator hoisting machine support structure according to claim 5.   One of the new machine beams has a governor mounting portion for mounting a governor, and the governor mounting portion includes a governor support base for supporting the governor, and the one new machine beam and the new machine The support structure for an elevator hoist according to claim 1 or 2, wherein one of the existing machine beams adjacent to the beam supports the governor support.   Renewal method of elevator hoisting machine for renewing hoisting machine for 1: 1 roping supported by two existing machine beams provided on elevator machine room floor to hoisting machine for 2: 1 roping A step of removing the hoisting machine for 1: 1 roping from the existing machine beam, a step of providing a new machine beam on the machine room floor in parallel with the existing machine beam, A step of providing a new machine bed on the existing machine beam and the new machine beam; and a step of attaching the hoisting machine for 2: 1 roping on the new machine bed. Renewal method of elevator hoisting machine.

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