WO2024053036A1

WO2024053036A1 - Elevator for construction

Info

Publication number: WO2024053036A1
Application number: PCT/JP2022/033647
Authority: WO
Inventors: 真樹田代; 悠人樋野; 和鈴木; 章智五十嵐
Original assignee: 株式会社日立製作所
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2024-03-14

Abstract

According to the present invention, an elevator for construction comprises a boarding car supported by a plurality of ropes, a winding machine that winds up the ropes, a temporary machine room in which the winding machine is installed, and a rope fixing device that is disposed in the temporary machine room and is for fixing the ropes or releasing the fixing. The rope fixing device comprises: a plurality of rope drums onto which the plurality of ropes are individually wound and that are able to rotate independently of each other; and a plurality of stopper units that are respectively provided to the rope drums and are able to switch between a first state in which the rotation of the rope drums is fixed and a second state in which the rotation fixing of the rope drums is released.

Description

construction elevator

The present invention relates to a construction elevator.

At construction sites such as high-rise buildings, a temporary machine room is installed in the hoistway of the building, and the temporary machine room can be moved upwards as the construction progresses, allowing the elevator car to extend its travel. Elevators have been introduced (for example, Patent Document 1). The temporary machine room will be equipped with a hoist, sheave, warping wheel, etc., as well as a rope storage section and rope fixing device.

The rope storage section is a part that stores multiple ropes (main ropes) that support the car. The rope storage section stores a rope of a length that can accommodate the expected ascending and descending journey from the lowest floor to the highest floor of the completed building. The rope fixing device includes a rope drum around which a rope sent out from a rope storage section is wound, and a stopper section that fixes rotation of the rope drum or releases the fixation. The rotation of the rope drum in the rope fixing device is fixed when the temporary machine room is installed on a predetermined floor and the car is raised or lowered, and is released when the temporary machine room is lifted by a lifting machine.

International Publication No. 2021/1186492

However, conventional construction elevators have a structure in which multiple ropes supporting the car are wound around a common rope drum included in the rope fixing device. For this reason, there was a problem in that the length and tension of each rope could not be adjusted individually.

An object of the present invention is to provide a construction elevator that can individually adjust the length and tension of a plurality of ropes that support a car.

In order to solve the above problems, for example, the configuration described in the claims is adopted.
The present application includes a plurality of means for solving the above problems, but to name one, it includes a car supported by a plurality of ropes, a hoist that winds up ropes to raise and lower the car. , located in the temporary machine room where the hoisting machine is located and in the temporary machine room, the rope can be fixed when using the car, and the rope can be unfixed when lifting the temporary machine room. This is a construction elevator equipped with a rope fixing device. The rope fixing device includes a plurality of rope drums around which a plurality of ropes are individually wound and which can rotate independently of each other, and a first state in which the rotation of the rope drum is fixed, and a rope fixing device is provided for each rope drum. The apparatus includes a plurality of stopper parts that can be switched to a second state in which the rotational fixation of the drum is released.

According to the present invention, in a construction elevator, the length and tension of a plurality of ropes supporting a car can be individually adjusted.
Problems, configurations, and effects other than those described above will be made clear by the following description of the embodiments.

It is a schematic diagram showing an example of composition of a construction elevator concerning a 1st embodiment. It is a front view showing the composition of the rope fixing device with which the construction elevator concerning a 1st embodiment is provided. 3 is a side view of the rope fixing device shown in FIG. 2 taken along line ABCD; FIG. It is a side view which shows the structure of the rope fixing device with which the construction elevator based on 2nd Embodiment is equipped. It is a side view which shows the structure of the rope fixing device with which the construction elevator based on 3rd Embodiment is equipped.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this specification and the drawings, elements having substantially the same functions or configurations are designated by the same reference numerals, and redundant description will be omitted.

<First embodiment>
FIG. 1 is a schematic diagram showing a configuration example of a construction elevator according to a first embodiment.
As shown in FIG. 1, the construction elevator 10 includes a car 12, a counterweight 14, and a temporary machine room 16. The car 12, counterweight 14, and temporary machine room 16 are arranged in a hoistway 18.

Shock absorbers

20 and 21 are arranged at the lower part of the hoistway 18. The shock absorber 20 is placed directly below the car 12. The buffer 21 is arranged directly below the counterweight 14.

The car 12 and the counterweight 14 are supported by guide rails (not shown) so that they can move vertically (raise and lower). A car pulley 22 is attached to the car 12. A weight pulley 23 is attached to the counterweight 14.

A rope 25, which is a main rope for raising and lowering the elevator, is wound around the car pulley 22 and the weight pulley 23. The car pulley 22 moves up and down together with the car 12 while rotating according to the drive of the rope 25. The weight pulley 23 moves up and down together with the counterweight 14 while rotating according to the drive of the rope 25.

A plurality of ropes 25 are provided for one car pulley 22. In other words, the cage pulley 22 is supported by a plurality of ropes 25. The plurality of ropes 25 are lined up at predetermined intervals in the depth direction perpendicular to the paper plane of FIG.

The temporary machine room 16 is a machine room temporarily installed in the hoistway 18 for transporting workers, construction materials, etc. at a construction site. A lifting cable 27 of a lifting machine (not shown) is connected to the upper part of the temporary machine room 16. The lifting machine is a machine that lifts the temporary machine room 16 via the lifting cable 27. The temporary machine room 16 has an upper machine room 16a, a lower machine room 16b, and a telescopic beam 16c.

The telescopic beam 16c is a beam that can be extended and contracted in the left-right direction in FIG. The telescopic beam 16c is a beam for mounting and fixing the temporary machine room 16 on a beam (not shown) of a building. When the temporary machine room 16 is fixed (temporarily installed) on a predetermined floor, the telescopic beam 16c is extended so that it can be placed on a beam of a building. Further, when lifting the temporary machine room 16, the telescopic beam 16c is in a contracted state so that the telescopic beam 16c does not interfere with the beams of the building.

A hoist 31, a warping wheel 32, a rope fixing device 33, a turning pulley 34, and a rope storage section 35 are arranged in the temporary machine room 16. The turning pulley 34 and the rope storage section 35 are arranged in the upper machine room 16a. The hoist 31, the warping wheel 32, and the rope fixing device 33 are arranged in the lower machine room 16b.

The hoist 31 has a bidirectionally rotatable sheave 31a, and a rope 25 is wound around this sheave 31a. The hoist 31 raises and lowers the car 12 and the counterweight 14 in opposite directions by winding up the rope 25 by rotating the sheave 31a. The warping wheel 32 is a pulley that guides the rope 25 wound around the sheave 31a of the hoist 31 to the weight pulley 23. The rope fixing device 33 is a device capable of fixing the rope 25 when using the car 12 and releasing the fixing of the rope 25 when lifting the temporary machine room 16. The configuration of the rope fixing device 33 will be explained in detail later.

The turning pulley 34 is a pulley that guides the rope 25 sent out from the rope storage section 35 to the rope fixing device 33. The rope storage part 35 is a part that stores the rope 25 of a length necessary to lift the temporary machine room 16 to a position corresponding to the top floor of the building. The rope storage section 35 stores, for example, a plurality of ropes 25 wound around a rope storage drum, and when lifting the temporary machine room 16, the ropes 25 are sent out by rotating the rope storage drum. The rope 25 sent out from the rope storage section 35 passes through the turning pulley 34, the rope fixing device 33, the weight pulley 23, the warping wheel 32, the hoist 31 (sheave 31a), and the cage pulley 22 in this order, and then enters the temporary machine room. 16 rope end fixing parts 36.

In the construction elevator 10 having the above configuration, when the car 12 is used, the sheave 31a of the hoist 31 is rotated with the rope 25 fixed by the rope fixing device 33. Thereby, the car 12 and the counterweight 14 are moved up and down in accordance with the drive of the rope 25 as the sheave 31a rotates. Specifically, when the sheave 31a is rotated clockwise in FIG. 1, the car 12 goes up and the counterweight 14 goes down. Furthermore, when the sheave 31a is rotated counterclockwise in FIG. 1, the car 12 is lowered and the counterweight 14 is raised.

On the other hand, when the use of the car 12 is stopped and the temporary machine room 16 is lifted, the telescopic beam 16c of the temporary machine room 16 is retracted to release the fixation of the temporary machine room 16 from the building, and the condition is changed. At the bottom, the temporary machine room 16 is moved upward by the lifting cable 27 of the lifting machine. After the temporary machine room 16 is moved to the target floor, the telescopic beam 16c is extended and the temporary machine room 16 is fixed. Further, when the temporary machine room 16 is moved to an upper floor, the length of the rope 25 is insufficient for the lifting and lowering distance after the movement. Therefore, when lifting the temporary machine room 16, the fixing of the rope 25 by the rope fixing device 33 is released, and the rope 25 is sent out by a predetermined length from the rope storage section 35.

FIG. 2 is a front view showing the configuration of a rope fixing device included in the construction elevator according to the first embodiment. FIG. 3 is a side view of the rope fixing device shown in FIG. 2 taken along line ABCD. In Figures 2 and 3, in order to clarify the structure and positional relationship of each part of the rope fixing device, the two orthogonal directions parallel to the horizontal plane are referred to as the X direction and the Y direction, and the direction parallel to the vertical plane is referred to as the Z direction. It is said that

As shown in FIGS. 2 and 3, the rope fixing device 33 has a housing 40. The housing 40 includes a pair of frames 41, a ceiling member 42, and a floor member 43 (FIG. 2). The pair of frames 41 are arranged to face each other in the Y direction. The ceiling member 42 spans between the upper ends of the pair of frames 41. The floor member 43 spans between the lower ends of the pair of frames 41. The lower ends of the pair of frames 41 are fixed to the floor surface 16d of the temporary machine room 16 together with the floor member 43.

Two main shafts 45 are attached to the pair of frames 41. The two main shafts 45 are arranged in pairs in the Z direction (vertical direction). Each main axis 45 is arranged parallel to the Y direction. Both ends of each main shaft 45 are partially formed into small diameter portions 45a having a small outer diameter. The small diameter portion 45a of the main shaft 45 fits into a hole provided in the frame 41. Further, both ends (small diameter portions 45a) of each main shaft 45 are fixed to the frame 41 by shaft fixing members 46.

Four

rope drums

47a, 47b, 47c, and 47d are attached to the upper main shaft 45. The four

rope drums

47a, 47b, 47c, and 47d have a structure in which they are separated from each other in the Y direction. Further, the four

rope drums

47a, 47b, 47c, and 47d are arranged adjacent to each other in the Y direction. The four

rope drums

47a, 47b, 47c, and 47d are each rotatably attached to the main shaft 45. That is, the four

rope drums

47a, 47b, 47c, and 47d are drums that can rotate independently of each other. A bearing (not shown) may be attached to the main shaft 45 so that each of the

rope drums

47a, 47b, 47c, and 47d can rotate smoothly. On the other hand, four

rope drums

47a, 47b, 47c, and 47d are also attached to the lower main shaft 45. That is, like the main shaft 45, the rope drums 47a are arranged in pairs in the Z direction. This point also applies to the

other rope drums

47b, 47c, and 47d. The attachment state of the four

rope drums

47a, 47b, 47c, and 47d to the main shaft 45 is the same on the upper and lower sides.

Each

rope drum

47a, 47b, 47c, 47d has a common configuration. Therefore, in the following description, each

rope drum

47a, 47b, 47c, 47d will be collectively referred to as the rope drum 47, unless it is necessary to distinguish between each

rope drum

47a, 47b, 47c, 47d. The configuration of the rope drum 47 will be described in detail below.

The rope drum 47 has a circumferential groove 51 (FIG. 2) for winding the rope 25, a plurality of pin insertion holes 52, and a gear portion 53. The rope drum 47 supports the rope 25 by the traction force generated when the rope 25 is wound around the circumferential groove 51. A plurality of circumferential grooves 51 are formed in parallel in the Y direction so that one rope 25 can be wound around one rope drum 47 a plurality of times (three times in the illustrated example).

A plurality of pin insertion holes 52 are provided on the outer peripheral surface of the rope drum 47. The plurality of pin insertion holes 52 are arranged at a predetermined angular pitch in the circumferential direction of the rope drum 47. In other words, the plurality of pin insertion holes 52 are provided with positions shifted in the circumferential direction of the rope drum 47. Each pin insertion hole 52 is formed in a concave shape at a predetermined depth from the outer peripheral surface of the rope drum 47. In this embodiment, as an example, a total of 12 pin insertion holes 52 are formed at a pitch of 30 degrees on the outer peripheral surface of the rope drum 47. Each pin insertion hole 52 is arranged between the circumferential groove 51 and the gear portion 53 in the Y direction. The gear portion 53 is formed at the outermost peripheral portion of the rope drum 47. The gear portion 53 is integrally formed with the rope drum 47. Therefore, the gear portion 53 rotates together with the rope drum 47 around the main shaft 45.

Further, the rope fixing device 33 includes a plurality of

rotation operation parts

55a, 55b, 55c, and 55d.

Rotation operation parts

55a, 55b, 55c, and 55d are provided for each

rope drum

47a, 47b, 47c, and 47d. Specifically, the rotation operation section 55a is provided corresponding to the rope drum 47a, and the rotation operation section 55b is provided corresponding to the rope drum 47b. Moreover, the rotation operation part 55c is provided corresponding to the rope drum 47c, and the rotation operation part 55d is provided corresponding to the rope drum 47d.

Each of the

rotation operation parts

55a, 55b, 55c, and 55d has a common configuration. Therefore, in the following explanation, each of the

rotational operation parts

55a, 55b, 55c, and 55d will be collectively referred to as the rotational operation part 55, unless it is necessary to distinguish between each of the

rotational operation parts

55a, 55b, 55c, and 55d. do. Further, in this embodiment, since a total of eight rope drums 47 are provided, a total of eight rotation operation units 55 are also provided. The configuration of the rotation operation section 55 will be described in detail below.

The rotation operation section 55 is composed of a rope winding shaft 56 and a gear 57. One rope winding shaft 56 is provided for each rope drum 47, and one gear 57 is also provided for each rope drum 47. In this embodiment, since a total of eight rope drums 47 are provided, a total of eight rope winding shafts 56 and eight gears 57 are also provided. Among the eight rope winding shafts 56, the upper four rope winding shafts 56 are arranged along the lower peripheral surface of the rope drum 47 attached to the upper main shaft 45, and the lower four rope winding shafts 56 are arranged along the lower peripheral surface of the rope drum 47 attached to the upper main shaft 45. , are arranged along the upper circumferential surface of the rope drum 47 attached to the lower main shaft 45.

Note that in FIG. 2, only one of the four upper rope winding shafts 56 is shown, and only one of the four lower rope winding shafts 56 is shown. Furthermore, in FIG. 2, the lower four gears 57 are arranged on the same axis, but in reality, as shown in FIG. Together with the two rope winding shafts 56, they are arranged at positions shifted in the circumferential direction of the rope drum 47. This also applies to the upper four gears 57.

Each rope winding shaft 56 is rotatably attached to the pair of frames 41. One end 58 of the rope winding shaft 56 is arranged to protrude outside the frame 41. Further, one end portion 58 of the rope winding shaft 56 is formed in a hexagonal shape when viewed from the central axis direction of the rope winding shaft 56 (left side in FIG. 2). The shape of one end 58 of the rope winding shaft 56 is determined depending on the tool used to rotate the rope winding shaft 56, and may be in a shape other than a hexagon.

The gear 57 is fixedly attached to the rope winding shaft 56 so as to rotate together with the rope winding shaft 56. The gear 57 meshes with the gear portion 53 of the rope drum 47. Specifically, the upper four gears 57 are meshed with the gear portions 53 of the

corresponding rope drums

47a, 47b, 47c, and 47d. Similarly, the lower four gears 57 mesh with the gear portions 53 of the

corresponding rope drums

47a, 47b, 47c, and 47d.

In the rotation operation section 55 having the above configuration, when a tool such as a spanner or a wrench is fitted to one end 58 of the rope winding shaft 56 and the rope winding shaft 56 is rotated using this tool, the rope winding shaft 56 becomes integral with the rotary operation section 55 . The gear 57 rotates. Further, when the gear 57 rotates, the rope drum 47 having the gear portion 53 meshing with the gear 57 rotates. The rotation operation section 55 is provided for each rope drum 47 as described above. Therefore, each rope drum 47 can be individually rotated by the rotation operation section 55. However, the rotation of the rope drum 47 is not allowed when the rotation of the rope drum 47 is fixed by a stopper part 61, which will be described later, but is allowed when the rotation of the rope drum 47 is released from the rotation fixation by the stopper part 61.

The rope fixing device 33 includes a plurality of

stopper parts

61a, 61b, 61c, and 61d.

Stopper portions

61a, 61b, 61c, and 61d are provided for each

rope drum

47a, 47b, 47c, and 47d. Specifically, the stopper part 61a is provided corresponding to the rope drum 47a, and the stopper part 61b is provided corresponding to the rope drum 47b. Moreover, the stopper part 61c is provided corresponding to the rope drum 47c, and the stopper part 61d is provided corresponding to the rope drum 47d.

Each of the

stopper parts

61a, 61b, 61c, and 61d has a common configuration. Therefore, in the following description, each of the

stopper parts

61a, 61b, 61c, and 61d will be collectively referred to as the stopper part 61, except when it is necessary to distinguish between each of the

stopper parts

61a, 61b, 61c, and 61d. Further, in this embodiment, since a total of eight rope drums 47 are provided, a total of eight stopper portions 61 are also provided. The configuration of the stopper portion 61 will be described in detail below.

The stopper part 61 can be switched between a first state in which the rotation of the rope drum 47 is fixed and a second state in which the rotation of the rope drum 47 is released. The stopper part 61 includes a stopper pin 62 that can be inserted into and removed from the pin insertion hole 52 of the rope drum 47, a cylinder 63 as a support member that supports the stopper pin 62 in a movable manner, and a regulation member that restricts the movement of the stopper pin 62. It includes a lid body 64 as a member.

The stopper pin 62 is composed of a pin with a circular cross section (round pin). The outer diameter of the tip 65 of the stopper pin 62 is partially reduced. The outer diameter of the tip portion 65 is slightly smaller than the inner diameter of the pin insertion hole 52. Thereby, the tip portion 65 of the stopper pin 62 can be inserted into and removed from the pin insertion hole 52.

The cylinder 63 is mounted on a base 66 (FIG. 3). The cylinder 63 supports the stopper pin 62 so as to be movable in the X direction. The lid body 64 is attached to the cylinder 63 using a plurality of bolts 67.

When the lid 64 is attached to the cylinder 63, the lid 64 is placed close to the rear end of the stopper pin 62. In this state, the movement of the stopper pin 62 is regulated by the lid 64 with the tip 65 of the stopper pin 62 inserted into the pin insertion hole 52 of the rope drum 47. Furthermore, rotation of the rope drum 47 is prevented by inserting the tip end 65 of the stopper pin 62 into the pin insertion hole 52. Therefore, the state in which the tip end 65 of the stopper pin 62 is inserted into the pin insertion hole 52 corresponds to a state in which the rotation of the rope drum 47 is fixed, that is, a first state.

On the other hand, when the lid 64 is removed from the cylinder 63, the stopper pin 62 can be moved in the left-right direction (X direction) in FIG. Further, when the stopper pin 62 is moved to the right in FIG. 3 from the state shown in FIG. 3, the tip end 65 of the stopper pin 62 is pulled out from the pin insertion hole 52. Rotation of the rope drum 47 is allowed by pulling out the tip 65 of the stopper pin 62 from the pin insertion hole 52. Therefore, the state in which the tip portion 65 of the stopper pin 62 is pulled out from the pin insertion hole 52 corresponds to the state in which the rotational fixation of the rope drum 47 is released, that is, the second state.

In this way, the stopper portion 61 is configured to be switchable between the first state and the second state by inserting and removing the tip portion 65 of the stopper pin 62 into and from the pin insertion hole 52 of the rope drum 47. ing.

Next, the operation of the rope fixing device 33 having the above configuration will be explained.
First, when using the car 12 in the construction elevator 10, it is necessary to fix the rope 25 with the rope fixing device 33. Therefore, in the rope fixing device 33, the rotation of all the

rope drums

47a, 47b, 47c, and 47d is fixed by the corresponding

stopper portions

61a, 61b, 61c, and 61d, respectively. Specifically, the stopper pin 62 of the stopper portion 61a is inserted into the pin insertion hole 52 of the rope drum 47a, and the stopper pin 62 of the stopper portion 61b is inserted into the pin insertion hole 52 of the rope drum 47b. Further, the stopper pin 62 of the stopper portion 61c is inserted into the pin insertion hole 52 of the rope drum 47c, and the stopper pin 62 of the stopper portion 61d is inserted into the pin insertion hole 52 of the rope drum 47d. As a result, the rotation of each

rope drum

47a, 47b, 47c, and 47d is fixed. Therefore, a total of four ropes 25, one wrapped around each of the

rope drums

47a, 47b, 47c, and 47d, can be fixed.

On the other hand, when the use of the car 12 is stopped and the temporary machine room 16 is lifted, the rope length from the rope fixing device 33 to the rope end fixing section 36 can be adjusted by sending out the rope 25 from the rope storage section 35. In order to extend the rope 25, it is necessary to release the fixation of the rope 25 by the rope fixing device 33. Therefore, in the rope fixing device 33, the rotational fixation of each of the

rope drums

47a, 47b, 47c, and 47d is released by the corresponding

stopper portions

61a, 61b, 61c, and 61d. Specifically, the stopper pin 62 of the stopper portion 61a is pulled out from the pin insertion hole 52 of the rope drum 47a, and the stopper pin 62 of the stopper portion 61b is pulled out from the pin insertion hole 52 of the rope drum 47b. Further, the stopper pin 62 of the stopper portion 61c is pulled out from the pin insertion hole 52 of the rope drum 47c, and the stopper pin 62 of the stopper portion 61d is pulled out from the pin insertion hole 52 of the rope drum 47d. As a result, each of the

rope drums

47a, 47b, 47c, and 47d is released from rotational fixation. Therefore, a total of four ropes 25, one wrapped around each of the

rope drums

47a, 47b, 47c, and 47d, can be sent out to the weight pulley 23 side by the amount that is sent out from the rope storage section 35. . Further, in this embodiment, since one rope 25 is wound around each

rope drum

47a, 47b, 47c, and 47d, the length of each rope 25 is determined by the length of each

rope drum

47a, 47b. , 47c, 47d can be extended individually.

Here, if a single rope drum (not shown) is used instead of the four

rope drums

47a, 47b, 47c, and 47d, and the four ropes 25 are wound around this single rope drum, When rotating a single rope drum, the four ropes 25 are always wound up with the same length. Therefore, the length and tension of each rope 25 cannot be adjusted individually.

On the other hand, in this embodiment, a plurality of

rope drums

47a, 47b, 47c, 47d are provided to be rotatable independently, and each

rope drum

47a, 47b, 47c, 47d has a

stopper portion

61a, 61b, 61c and 61d are provided. Therefore, the length and tension of each rope 25 can be adjusted individually.

As a result, for example, when lifting the temporary machine room 16, one rope 25 wound around the rope drum 47a out of the four ropes 25 sent out from the rope storage section 35 is attached to the other ropes. If the rope length is too long or the rope tension is too weak compared to the three ropes 25 wound around the

drums

47b, 47c, and 47d, only the length and tension of the one rope 25 should be changed. Can be adjusted. Specifically, after only the stopper portion 61a corresponding to the rope drum 47a is switched from the first state to the second state, the rope drum 47a is rotated by the rotation operation portion 55a. Then, the rope drum 47a is rotated by the rotary operation section 55a until the length and tension of the one rope 25 become approximately equal to the length and tension of the other three ropes 25, and the rope 25 is wound up, and then the stopper The section 61a is switched from the second state to the first state. This allows the lengths and tensions of the four ropes 25 to be made equal.

In addition, in this embodiment, a stopper pin 62 that can be inserted into and removed from the pin insertion hole 52 of the rope drum 47 is provided in the stopper portion 61. Thereby, the state of the stopper portion 61 (first state, second state) can be easily switched by inserting and removing the stopper pin 62.

Further, in this embodiment, a configuration is adopted in which the stopper pin 62 is movably supported by the cylinder 63 and the movement of the stopper pin 62 inserted into the pin insertion hole 52 is restricted by the cover body 64. Thereby, rotation of the rope drum 47 can be reliably prevented by the stopper pin 62.

Furthermore, in this embodiment, the rope fixing device 33 includes a rotation operation section 55 that rotates the rope drum 47 in the second state. Thereby, the rope drum 47 can be easily rotated.

Note that the number of ropes 25 for adjusting the length and tension of the ropes 25 is not limited to one, but may be two or more. Further, the length and tension of all the ropes 25 may be adjusted.

<Second embodiment>
FIG. 4 is a side view showing the configuration of a rope fixing device included in the construction elevator according to the second embodiment.
The construction elevator according to the second embodiment differs from the first embodiment in the configuration of the stopper portion of the rope fixing device. The configuration of the stopper section will be described in detail below.

As shown in FIG. 4, the stopper part 611 includes a stopper pin 621 that can be inserted into and removed from the pin insertion hole 52 of the rope drum 47, a cylinder 631 as a support member that movably supports the stopper pin 621, and a stopper pin It includes a spring 641 as a biasing member that biases the spring 621, and a pressing member 651 that presses the spring 641.

The stopper pin 621 is composed of a pin with a circular cross section. The outer diameter of the tip 661 of the stopper pin 621 is partially reduced. The outer diameter of the tip portion 661 is slightly smaller than the inner diameter of the pin insertion hole 52 of the rope drum 47. Thereby, the tip portion 661 of the stopper pin 621 can be inserted into and removed from the pin insertion hole 52. Further, a flange portion 671 is integrally formed with the stopper pin 621. The collar portion 671 is a portion that receives the biasing force of the spring 641.

The cylinder 631 is mounted on the base 66. The cylinder 631 supports the stopper pin 621 so as to be movable in the X direction.

The spring 641 is a member that biases the stopper pin 621 in the direction in which it is inserted into the pin insertion hole 52 of the rope drum 47 (leftward in FIG. 4). The spring 641 is a coil spring.

The holding member 651 is attached to the cylinder 631 using a plurality of bolts 681. The pressing member 651 is attached to the cylinder 631 with the spring 641 sandwiched between it and the flange 671 of the stopper pin 621. As a result, the spring 641 is compressed between the collar portion 671 and the pressing member 651, and the reaction force caused by this compression biases the stopper pin 621 to the left in FIG. Further, the flange portion 671 is abutted against the stepped portion 691 of the cylinder 631 by the biasing force of the spring 641.

In the stopper portion 611 having the above configuration, the biasing force of the spring 641 disposed inside the cylinder 631 is applied to the collar portion 671 of the stopper pin 621, and the tip portion 661 of the stopper pin 621 is pushed against the rope drum 47 by the biasing force. It is inserted into the pin insertion hole 52 of. In this state, rotation of the rope drum 47 is prevented by the stopper pin 621. Therefore, the state in which the tip end 661 of the stopper pin 621 is inserted into the pin insertion hole 52 corresponds to a state in which the rotation of the rope drum 47 is fixed, that is, a first state.

On the other hand, when the stopper pin 621 is pulled rightward in FIG. 4 against the biasing force of the spring 641, the tip 661 of the stopper pin 621 is pulled out from the pin insertion hole 52 of the rope drum 47. Rotation of the rope drum 47 is allowed by pulling out the tip 661 of the stopper pin 621 from the pin insertion hole 52. Therefore, the state in which the tip end portion 661 of the stopper pin 621 is pulled out from the pin insertion hole 52 corresponds to the state in which the rotational fixation of the rope drum 47 is released, that is, the second state.

In this way, the stopper portion 611 has a configuration that can be switched between the first state and the second state by inserting and removing the tip portion 661 of the stopper pin 621 into and from the pin insertion hole 52 of the rope drum 47. ing.

In the second embodiment, the tip 661 of the stopper pin 621 can be inserted into and removed from the pin insertion hole 52 of the rope drum 47 even when the pressing member 651 is attached to the cylinder 631. Thereby, the state (first state, second state) of the stopper portion 611 can be quickly switched. Further, when the stopper portion 611 is in the first state, the tip portion 661 of the stopper pin 621 is maintained in the state inserted into the pin insertion hole 52 by the biasing force of the spring 641. Therefore, rotation of the rope drum 47 can be reliably prevented by the stopper pin 621.

Additionally, as a method for pulling out the tip end 661 of the stopper pin 621 from the pin insertion hole 52, there is also a method of removing the holding member 651 from the cylinder 631 and pulling the stopper pin 621 to the right in FIG. 4.

<Third embodiment>
FIG. 5 is a side view showing the configuration of a rope fixing device included in the construction elevator according to the third embodiment.
The construction elevator according to the third embodiment differs from the first embodiment in the configuration of the stopper portion of the rope fixing device. The configuration of the stopper section will be described in detail below.

As shown in FIG. 5, the stopper part 612 includes a brake shoe 622, a stopper pin 632 that supports the brake shoe 622, a cylinder 642 as a support member that movably supports the stopper pin 632, and a stopper pin 632. It includes a spring 652 as a pressing member that presses the spring 652, and a pressing member 662 that presses the spring 652.

The brake shoe 622 is arranged to face the outer peripheral surface of the rope drum 47. The brake shoe 622 is made of resin, for example. The brake shoe 622 is attached to the tip of the stopper pin 632. The braking surface of the brake shoe 622 is curved along the outer circumferential surface of the rope drum 47 so as to be in close contact with the outer circumferential surface of the rope drum 47. The brake shoe 622 is pressed against the outer peripheral surface of the rope drum 47 by the biasing force of the spring 652. The outer circumferential surface of the rope drum 47 may have projections and depressions to increase the braking force of the brake shoes 622.

The stopper pin 632 is composed of a pin with a circular cross section. A flange portion 672 is integrally formed on the stopper pin 632. The collar portion 672 is a portion that receives the biasing force of the spring 652.

The cylinder 642 is mounted on the base 66. The cylinder 642 supports the stopper pin 632 so as to be movable in the X direction.

The spring 652 is a member that urges the stopper pin 632 to press the brake shoe 622 against the outer peripheral surface of the rope drum 47. The spring 652 is a coil spring.

The holding member 662 is attached to the cylinder 642 using a plurality of bolts 682. The holding member 662 is attached to the cylinder 642 with the spring 652 sandwiched between the holding member 662 and the flange 672 of the stopper pin 632. As a result, the spring 652 is compressed between the collar portion 672 and the pressing member 662, and the reaction force caused by this compression biases the stopper pin 632 to the left in FIG.

In the stopper portion 612 having the above configuration, the biasing force of the spring 652 disposed inside the cylinder 642 is applied to the collar portion 672 of the stopper pin 632, and the biasing force causes the brake shoe 622 to press against the outer peripheral surface of the rope drum 47. It's pressed against me. In this state, rotation of the rope drum 47 is prevented by the braking force of the brake shoe 622. Therefore, the state in which the brake shoe 622 is pressed against the outer peripheral surface of the rope drum 47 corresponds to a state in which the rotation of the rope drum 47 is fixed, that is, a first state.

On the other hand, when the stopper pin 632 is pulled toward the right in FIG. 5 against the biasing force of the spring 652, the brake shoe 622 is separated from the outer peripheral surface of the rope drum 47. Rotation of the rope drum 47 is allowed when the brake shoe 622 separates from the outer peripheral surface of the rope drum 47. Therefore, the state in which the brake shoe 622 is separated from the outer peripheral surface of the rope drum 47 corresponds to a state in which the rotational fixation of the rope drum 47 is released, that is, a second state.

In this way, the stopper portion 612 is configured to be switchable between the first state and the second state by pressing the brake shoe 622 against or pulling away from the outer peripheral surface of the rope drum 47.

In the third embodiment, the brake shoe 622 can be pressed against or pulled away from the outer peripheral surface of the rope drum 47 even when the pressing member 662 is attached to the cylinder 642. Thereby, the state (first state, second state) of the stopper portion 612 can be quickly switched. Further, when the stopper portion 612 is in the first state, the brake shoe 622 is maintained pressed against the outer peripheral surface of the rope drum 47 by the biasing force of the spring 652. Therefore, the rotation of the rope drum 47 can be reliably prevented by the brake shoe 622.

In addition, as a method of separating the brake shoe 622 from the outer peripheral surface of the rope drum 47, there is also a method of removing the holding member 662 from the cylinder 642 and pulling the stopper pin 632 to the right in FIG.

<Modified examples, etc.>
The present invention is not limited to the embodiments described above, but includes various modifications. For example, in the embodiments described above, the content of the present invention is explained in detail to make it easier to understand, but the present invention is not necessarily limited to having all the configurations described in the embodiments described above. Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment. Furthermore, it is also possible to add the configuration of another embodiment to the configuration of one embodiment. It is also possible to delete some of the configurations of each embodiment, add other configurations, or replace them with other configurations.

For example, in the above embodiment, four

rope drums

47a, 47b, 47c, and 47d are provided on the upper and lower sides of the rope fixing device 33, respectively. They do not necessarily have to be arranged vertically in pairs. That is, the rope fixing device 33 may have a configuration provided with a plurality of rope drums so that the plurality of ropes 25 can be wound individually.

In addition, in the above embodiment, since a configuration in which one car 12 is supported by four ropes 25 is adopted, the rope fixing device 33 has four

rope drums

47a, 47b, 47c and 47d, the number of ropes 25 and the number of rope drums 47 may be two or more, respectively.

10... Construction elevator, 12... Car, 16... Temporary machine room, 25... Rope, 31... Hoisting machine, 33... Rope fixing device, 47, 47a, 47b, 47c, 47d... Rope drum, 52... Pin insertion Hole, 55, 55a, 55b, 55c, 55d... Rotation operation part, 61a, 61b, 61c, 61d, 611, 612... Stopper part, 62, 621, 632... Stopper pin, 63... Cylinder (support member), 64... Lid body (regulating member), 622...Brake shoe, 641...Spring (biasing member), 652...Spring (pressing member)

Claims

A cage supported by multiple ropes,
a hoist that winds up the rope to raise and lower the car;
a temporary machine room in which the hoisting machine is placed;
a rope fixing device disposed in the temporary machine room, capable of fixing the rope when using the car and releasing the fixation of the rope when lifting the temporary machine room; ,
The rope fixing device is
a plurality of rope drums around which the plurality of ropes are individually wound and which are rotatable independently of each other;
A plurality of stopper parts are provided for each of the rope drums and are switchable between a first state in which the rotation of the rope drum is fixed and a second state in which the rotation of the rope drum is released from the fixation. .
A plurality of pin insertion holes are provided on the outer peripheral surface of the rope drum,
The construction elevator according to claim 1, wherein the stopper portion includes a stopper pin that can be inserted into and removed from the pin insertion hole.
The stopper portion includes a support member that movably supports the stopper pin, and restricts movement of the stopper pin when the stopper pin is inserted into any one of the plurality of pin insertion holes. The construction elevator according to claim 2, further comprising: a regulating member that does.
The construction elevator according to claim 2, wherein the stopper section includes a support member that movably supports the stopper pin, and a biasing member that biases the stopper pin in a direction in which it is inserted into the pin insertion hole. .
The stopper section includes a brake shoe disposed to face the outer peripheral surface of the rope drum, a stopper pin that supports the brake shoe, a support member that movably supports the stopper pin, and a support member that supports the brake shoe in a movable manner. The construction elevator according to claim 1, further comprising: a pressing member that urges the stopper pin to press against the outer peripheral surface of the rope drum.
The construction elevator according to claim 1, wherein the rope fixing device includes a rotation operation section that is provided for each rope drum and rotates the rope drum under the second state.