JP2011051708A - Rope type elevator and renewal method to rope type elevator from hydraulic elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten renewal work, and to reduce cost, by effectively using a component of a hydraulic elevator as a component of a rope type elevator, when renewing to the rope type elevator from the hydraulic elevator. <P>SOLUTION: This rope type elevator 16 is formed by renewing the hydraulic elevator, and is provided by suspending a car 3 and a counterweight 21 by a rope 28 wound on a hoisting device 19. The counterweight 21 is formed by filling a weight material 22 in a hollow plunger 6 liftably supported by a jack 5 used in the hydraulic elevator. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a rope-type elevator formed by renewing a hydraulic elevator, and a renewal method from a hydraulic elevator to a rope-type elevator.

  In recent years, work has been carried out to renew a hydraulic elevator to a rope elevator. In such renewal work, most components of hydraulic elevators, such as hydraulic units, hydraulic piping, jacks, plungers, cars, etc., are removed and new components such as hoisting devices and cars are installed. This renewal work takes a lot of time, labor and cost.

  On the other hand, as described in Patent Document 1 below, when a hydraulic elevator is renewed to a rope elevator, a plunger that is a component of the hydraulic elevator is used as a component of the rope elevator without removing the plunger. Are known.

JP 2002-37563 A

  However, in the rope type elevator described in Patent Document 1, it is necessary to newly install a counterweight, and it is difficult to secure a space for installing the counterweight in the elevator hoistway.

  Therefore, when the space for installing the counterweight in the elevator hoistway cannot be ensured, it has been difficult to renew the hydraulic elevator to the rope elevator by the method described in Patent Document 1.

  Even if a space for installing the counterweight can be secured, the counterweight is newly installed, so that the cost is high.

  The present invention has been made to solve such problems, and its purpose is to effectively use the components of the hydraulic elevator as the components of the rope elevator when renewing the hydraulic elevator to the rope elevator. The aim is to reduce the cost and cost of renewal work.

  The first feature according to the embodiment of the present invention is a rope type elevator that is formed by renewing a hydraulic elevator and in which a rider and a balance weight are suspended from a rope wound around a hoisting device. The counterweight is formed by filling a weighted material in a hollow plunger that is supported so as to be lifted and lowered by a jack used in the hydraulic elevator.

  A second feature according to the embodiment of the present invention is a rope type elevator formed by renewing a hydraulic elevator and having a rider and a balance weight suspended from a rope wound around a hoisting device. The counterweight connects a jack used in the hydraulic elevator and a hollow plunger supported by the jack so as to be movable up and down integrally, and fills the plunger with a weight material. A lower guide device is provided at a lower portion of the counterweight, and a counterweight rail that guides the lower guide device so as to be slidable in the vertical direction is provided to extend in the vertical direction in the elevator hoistway. That's it.

A third feature according to an embodiment of the present invention is an elevator renewal method for renewing a hydraulic elevator to a rope elevator, the step of removing the hydraulic unit and hydraulic piping of the hydraulic elevator, A step of forming a counterweight by filling a weight in a hollow plunger supported by a jack of a hydraulic elevator so as to be movable up and down;
Winding a rope around a newly installed hoisting device, and suspending the rope and the counterweight on the rope.

  According to the present invention, the components of the hydraulic elevator can be effectively used as the components of the rope elevator, the renewal work from the hydraulic elevator to the rope elevator can be shortened, and the cost can be reduced. Can be planned.

It is a front view showing a rope type elevator of a 1st embodiment of the present invention. FIG. It is a vertical front view which shows a counterweight. It is a top view which shows the support structure of the upper part side of a balance weight. It is a vertical front view which shows the supply structure of a buffer and lubricating oil. It is a front view which shows the hydraulic elevator before renewal. FIG. It is a front view which shows the hydraulic elevator which removed the removal object part in the case of renewal. It is a front view which shows the rope type elevator of the 2nd Embodiment of this invention. It is a vertical front view which shows a part of counterweight. It is a vertical front view which shows a part of counterweight.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS. 6 and 7 show an existing hydraulic elevator 1. The hydraulic elevator 1 includes a car 3 installed in an elevator hoistway 2 formed in the building so as to be able to be raised and lowered, and a car 3 And a hydraulic mechanism for moving up and down. The hydraulic mechanism includes a stand 4 fixed to the bottom of the pit in the elevator hoistway 2, a jack 5 fixed to the top of the stand 4, a plunger 6 supported so as to be able to move up and down by the jack 5, and oil to the jack 5 The hydraulic unit 7 to be taken in and out, and the hydraulic pipe 8 connected between the hydraulic unit 7 and the jack 5 are configured. In order to reduce the weight of the plunger 6, a hollow cylindrical pipe material is used. A plunger sheave 9 and a guide device 10 are attached to the upper end portion of the plunger 6. A rope 11 is wound around the plunger sheave 9 to convey the expansion / contraction operation of the plunger 6 to the car 3 to raise and lower the car 3.

  Further, as other parts constituting the hydraulic elevator 1, a pair of car rails 12 are provided in the elevator hoistway 2 so as to extend in the vertical direction and guide the car 3 so that the car 3 can be raised and lowered. A pair of plunger rails 13 for guiding the apparatus 10 to be movable up and down, a shock absorber 13a for the car 3 provided at the bottom of the pit, and the like are provided.

  A car side rope hitch 14 is fixed to the lower part of the outer peripheral side of the car 3, and a stand side rope hitch 15 is fixed to the stand 4. One end of the rope 11 wound around the plunger sheave 9 is fixed to the car side rope hitch 14, and the other end of the rope 11 is fixed to the stand side rope hitch 15.

  In this hydraulic elevator 1, when oil is supplied from the hydraulic unit 7 side to the jack 5, the plunger 6 rises together with the plunger sheave 9 due to the increase in the hydraulic pressure in the jack 5, and the passenger car as the plunger sheave 9 rises. 3 rises. When the oil is returned from the jack 5 to the hydraulic unit 7 side, the plunger 6 is lowered together with the plunger sheave 9 due to a decrease in the hydraulic pressure in the jack 5, and the car 3 is lowered as the plunger sheave 9 is lowered.

  In this hydraulic elevator 1, the relationship between the elevation dimension of the car 3 and the elevation dimension of the plunger sheave 9 is 2: 1. Further, the plunger sheave 9 is always located above the car-side rope hitch 14, and the situation where the car-side rope hitch 14 interferes with the plunger sheave 9 does not occur when the car 3 moves up and down.

  When the hydraulic elevator 1 is renewed to the rope elevator 16 (see FIGS. 1 and 2), as shown in FIG. 8, from the hydraulic elevator 1, the hydraulic unit 7, the hydraulic pipe 8, the plunger sheave 9, and the guide device. Each part of 10 and the rope 11 is removed. Parts other than these parts removed from the hydraulic elevator 1 are used in the renewed rope type elevator 16.

  1 and 2 show a renewed rope-type elevator 16. A machine base 17 is installed on the upper part of the elevator hoistway 2, and a hoisting device 19 having a hoisting sheave 18 is provided on the machine base 17. A deflector sheave 20 is installed.

  A counterweight 21 is formed by using the plunger 6 of the hydraulic elevator 1. As shown in FIG. 3, the counterweight 21 is formed by filling a weight member 22 in the hollow portion of the plunger 6. As the weight member 22, a member having a large specific gravity and a little secular change, such as an iron ball having a diameter of 1 to 2 mm, iron powder, or the like can be used. Filling the plunger 6 with the weight material 22 is performed from a suspension bolt screw hole 24 formed in a lid portion 24 a fixed to the upper end of the plunger 6.

  The suspension bolt screw hole 24 is a portion where the guide device 10 and the plunger sheave 9 are screwed in the hydraulic elevator 1. The guide device 10 and the plunger sheave 9 are removed for renewal, and the weight material 22 is filled. After that, the mounting base 25 is screwed. A counterweight sheave 26 and an upper guide device 27 are attached to the attachment base 25.

  A rope 28 is wound around the counterweight sheave 26, the hoisting sheave 18, and the deflecting sheave 20. One end of the rope 28 is fixed to the car-side rope hitch 14, and the other end of the rope 28 is the stand-side rope hitch. 15 is fixed. The counterweight sheave 26, the hoisting sheave 18, the deflecting sheave 20, and the car-side rope hitch 14 are located in substantially the same vertical plane. Further, the car 3 used in the hydraulic elevator 1 is used as it is as the car 3 used in the rope type elevator 16.

  As shown in FIGS. 1 and 4, the counterweight sheave 26 has a diameter that does not allow the car-side rope hitch 14 to enter the vertical projection plane of the counterweight sheave 26.

  The upper guide device 27 is a device for guiding the counterweight 21 so as to be slidable in the vertical direction along the plunger rail 13. As shown in FIG. 4, the upper guide device 27 has rods 29a and 29b extending from the mounting base 25 toward the plunger rails 13 located on both sides of the mounting base 25, and the distal ends of the rods 29a and 29b. An engaging portion 30 that engages with the plunger rail 13 is formed. One rod 29a extending in the direction opposite to the car-side rope hitch 14 has a double-sided support structure that sandwiches the attachment base 25 from both sides. On the other hand, the other rod 29b extending toward the car-side rope hitch 14 has a cantilever support structure in which the car-side rope hitch 14 does not enter the vertical projection surface of the rod 29b. When the elevator 3 moves up and down, it does not interfere with the car-side rope hitch 14. The rod 29b of the cantilever support structure is made of a thicker material than the rod 29a of the both-end support structure, and the rod 29a and the rod 29b are formed to have substantially the same strength.

  As shown in FIGS. 5 and 1, a shock absorber 31 for the counterweight 22 is provided on the upper portion of the jack 5 to buffer the impact when the counterweight 21 falls. The shock absorber 31 is configured by fitting a coil to the balance weight 21 so as to be slidable. When the counterweight 21 falls, the lid 24a fixed to the upper end portion of the counterweight 21 or the mounting base 25 screwed to the lid 24a collides with the shock absorber 31, and the impact of the fall is buffered. .

  As shown in FIGS. 5 and 1, the plunger rail 13 is provided with an oil lubricator 32 storing lubricating oil. The oil lubricator 32 has an oil passage 33 for guiding the lubricant toward the upper end of the jack 5. Is provided. An oil seal 34 that is slidably in contact with the outer peripheral surface of the counterweight 21 is provided at the upper end of the jack 5, and lubricating oil is supplied from the lubricator 32 through the oil passage 33 to the oil seal 34. Is done. The oil seal 34 is a member that has also been used in the hydraulic elevator 1.

  In such a configuration, when the hydraulic elevator 1 shown in FIGS. 6 and 7 is renewed to the rope type elevator 16 shown in FIGS. 1 and 2, first, as shown in FIG. The hydraulic unit 7, the hydraulic pipe 8, the plunger sheave 9, the guide device 10, and the rope 11 are removed. The parts other than these parts to be removed are used in the renewed rope type elevator 16.

  Next, parts that are necessary for the renewed rope type elevator 16 and are not used in the hydraulic elevator 1, such as the hoisting device 19, the counterweight 21, the counterweight sheave 26, the rope 28, and the shock absorber. 31, the lubricator 32 and the like are added.

  Then, the added rope 28 is wound around the hoisting sheave 19 and the weighted sheave 26 and the deflecting sheave 20, and one end of the rope 28 is fixed to the car-side rope hitch 14 and the other end of the rope 28 is fixed to the stand-side rope hitch. By fixing to 15, the car 3 and the counterweight 21 are suspended from the rope 28, and the renewal to the rope type elevator 16 is completed.

  Among the components to be added, the counterweight 21 is formed by filling a weight material 22 such as an iron ball or iron powder in the plunger 6 used in the hydraulic elevator 1.

  Therefore, when renewing from the hydraulic elevator 1 to the rope elevator 16, it is not necessary to remove the plunger 6 of the hydraulic elevator 1 and the jack 5 supporting the plunger 6 so as to be able to move up and down. And save time and money.

  Furthermore, since the counterweight 21 is formed by filling the weight 6 in the plunger 6, it is not necessary to newly provide the counterweight 21, and the cost can be reduced. In addition, a new installation space for installing the counterweight 21 is not required, and the renewal from the hydraulic elevator 1 to the rope type elevator 16 is performed without causing a problem of securing an installation space for installing the counterweight 21. be able to.

  Further, a counterweight 21 is formed using the plunger 6, and a counterweight sheave 26 is attached at substantially the same position as the plunger sheave 9. For this reason, the installation position of the rope 28 of the rope type elevator 16 and the installation position of the rope 11 of the hydraulic elevator 1 are substantially the same position. Therefore, one end of the rope 28 can be fixed to the car-side rope hitch 14 and the other end of the rope 28 can be fixed to the stand-side rope hitch 15, so that the car 3 used in the hydraulic elevator 1 can be used as the rope. It can be used in the elevator 16. Therefore, it is not necessary to replace or refurbish the car 3 when renewing the rope type elevator 16, and also from this point, labor, time and cost required for renewing the rope type elevator 16 can be reduced.

  As shown in FIGS. 4 and 1, the diameter of the counterweight sheave 26 is formed such that the car-side rope hitch 14 does not enter the projection surface in the vertical direction of the counterweight sheave 26. Therefore, the car-side rope hitch 14 can be prevented from interfering with the counterweight sheave 26 when the car 3 is raised and lowered, and damage to the counterweight sheave 26 and the car-side rope hitch 14 due to the interference can be prevented. be able to.

  In this rope type elevator 16, when the car 3 is raised and lowered, the raising and lowering dimensions of the car 3 and the lifting and lowering dimensions of the counterweight 21 are 2: 1, and the car-side rope hitch 14 is provided with the counterweight sheave 26. There are cases where it is located above and below. For this reason, it is necessary to take measures to prevent interference between the car-side rope hitch 14 and the counterweight sheave 26 when the car 3 is raised and lowered. As a countermeasure, the diameter of the counterweight sheave 26 is set as described above. The cage-side rope hitch 14 does not enter the vertical projection plane of the counterweight sheave 26.

  Further, as shown in FIG. 4, the rod 29 b of the upper guide device 27 connected to the upper portion of the counterweight 21 has a cantilever support structure, and interference with the car-side rope hitch 14 when the car 3 moves up and down. Can be avoided. Therefore, it is possible to prevent the car-side rope hitch 14 from interfering with the upper guide device 27 when the car 3 is raised and lowered, and to prevent damage to the upper guide device 27 and the car-side rope hitch 14 due to the interference. it can.

  Further, as shown in FIG. 5, since the shock absorber 31 for the counterweight 21 is provided on the upper portion of the jack 5, even if the counterweight 21 falls, The occurrence of serious accidents can be prevented.

  Further, as shown in FIG. 5, since the lubricator 32 is provided and the lubricating oil is supplied to the oil seal 34, the oil supply from the hydraulic unit 7 is no longer supplied by the renewal to the rope type elevator 16. Lubrication can be performed satisfactorily and the durability of the oil seal 34 can be maintained.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same component as the component demonstrated in 1st Embodiment, and the overlapping description is abbreviate | omitted.

  The rope type elevator 41 is an elevator formed by renewing the hydraulic elevator 1 (see FIGS. 6 and 7), and the basic structure of the rope type elevator 41 is the same as that of the rope type elevator 16 of the first embodiment. It is.

  The difference between the rope type elevator 41 of the second embodiment and the rope type elevator 16 of the first embodiment is the structure of the counterweight 42.

  The counterweight 42 removes the jack 5 used in the hydraulic elevator 1 from the stand 4 and connects the jack 5 and the hollow plunger 6 supported by the jack 5 so as to be movable up and down integrally. At the same time, the weight 6 is filled in the plunger 6 and in the space between the plunger 6 and the jack 5.

  The filling of the weight material 22 into the plunger 6 is performed from the screw hole 24 for the suspension bolt. Filling the space between the plunger 6 and the jack 5 with the weight material 22 is performed by removing the oil seal 34 and the cover 43 attached to the upper end of the jack 5.

  As shown in FIG. 11, the jack 5 and the plunger 6 are connected to each other by using a fastener 44. The fastening bracket 44 is fixed to the cover 43 with a screw 45, and the mounting base portion 25 and the fastening bracket 44 fixed to the suspension bolt screw hole 24 are fixed with a screw 46.

  A lower guide device 47 is attached to the lower part of the counterweight 42. The lower guide device 47 is a device that guides the lower portion of the counterweight 42 so as to be slidable in the vertical direction along the counterweight rail 48, a rod 49 that extends toward the counterweight rail 48, and a tip portion of the rod 49. And an engaging portion 50 that engages with the counterweight rail 48. The rod 49 is formed in a shape that does not allow the car-side rope hitch 14 to enter the vertical projection surface of the rod 49 so that it does not interfere with the car-side rope hitch 14 when the car 3 moves up and down. .

  The counterweight rail 48 is connected to the lower end portion of the plunger rail 13 so as to extend the plunger rail 13.

  A shock absorber 51 for the counterweight 42 is provided on the upper portion of the stand 4 for buffering the shock when the counterweight 42 falls.

  In such a configuration, when the hydraulic elevator 1 shown in FIG. 6 and FIG. 7 is renewed to the rope type elevator 41 shown in FIG. 9, first, as shown in FIG. The hydraulic unit 7, the hydraulic pipe 8, the plunger sheave 9, the guide device 10, and the rope 11, which are parts, are removed, and parts other than these removed parts are used in the renewed rope type elevator 16.

  Next, parts that are necessary for the renewed rope-type elevator 16 and are not used in the hydraulic elevator 1, such as the hoisting device 19, the counterweight 42, the counterweight sheave 26, the rope 28, and the counterweight. Rail 48, shock absorber 51, etc. are added.

  Then, the added rope 28 is wound around the hoisting sheave 19 and the weighted sheave 26 and the deflecting sheave 20, and one end of the rope 28 is fixed to the car-side rope hitch 14 and the other end of the rope 28 is fixed to the stand-side rope hitch. 15, the car 3 and the counterweight 42 are suspended from the rope 28, and the renewal to the rope type elevator 41 is completed.

  Among the components to be added, the counterweight 42 removes the jack 5 used in the hydraulic elevator 1 from the stand 4 and connects the jack 5 and the plunger 6 so that they can be moved up and down integrally. It is formed by filling the weight material 22 in the space between 6 and the jack 5.

  Therefore, when renewing from the hydraulic elevator 1 to the rope type elevator 41, it is not necessary to remove the plunger 6 of the hydraulic elevator 1 and the jack 5 supporting the plunger 6 so as to be movable up and down. And save time and money.

  Further, since the counterweight 42 is formed by filling the weight 6 in the plunger 6 and the space between the plunger 6 and the jack 5, there is no need to newly provide the counterweight 42. Cost reduction can be achieved. Moreover, a new installation space for installing the counterweight 42 is not required, and the renewal from the hydraulic elevator 1 to the rope type elevator 41 is performed without causing a problem of securing an installation space for installing the counterweight 42. be able to.

  Further, the counterweight 42 is formed by connecting the jack 5 and the plunger 6 and filling the weight 6 in the plunger 6 and the space between the plunger 6 and the jack 5. The weight of the counterweight 42 can be increased, and even when the car 3 is large, the counterweight 42 having a large weight can be secured, and the renewal from the hydraulic elevator 1 to the rope type elevator 41 is performed. be able to.

  Further, a lower guide device 47 is provided below the counterweight 42, a counterweight rail 48 is connected to the lower end portion of the plunger rail 13 so as to extend the plunger rail 13, and the lower guide device 47 is moved up and down on the counterweight rail 48. It is engaged so as to be slidable in the direction. For this reason, the counterweight 42 is supported by the upper guide device 27 at the upper portion and supported by the lower guide device 47 at the lower portion, and moves up and down smoothly.

  In the balance weight 42 of the rope type elevator 41, the case where the weight member 22 is filled in the plunger 6 and the space between the plunger 6 and the jack 5 has been described as an example. Due to the relationship with the weight of the car 3, there may be a case where the weight member 22 is filled only in the plunger 6 and the space between the plunger 6 and the jack 5 may not be filled.

DESCRIPTION OF SYMBOLS 1 Hydraulic type elevator 3 Passenger car 4 Stand 5 Jack 6 Plunger 7 Hydraulic unit 8 Hydraulic piping 13 Plunger rail 14 Car side rope hitch 15 Stand side rope hitch 16 Rope type elevator 19 Lifting device 21 Balance weight 22 Weight material 26 For balance weight Sheave 27 Upper guide device 28 Rope 31 Shock absorber 41 Rope type elevator 42 Balance weight 47 Lower guide device 48 Balance weight rail 51 Shock absorber

Claims (8)

A rope-type elevator that is formed by renewing a hydraulic elevator, and is suspended from a rope wound around a hoisting device and a balance weight.
The balance weight is formed by filling a weight material in a hollow plunger supported so as to be movable up and down by a jack used in the hydraulic elevator. A rope-type elevator that is formed by renewing a hydraulic elevator, and is suspended from a rope wound around a hoisting device and a balance weight.
The counterweight is formed by connecting a jack used in the hydraulic elevator and a hollow plunger supported by the jack so as to be movable up and down integrally and filling the plunger with a weight material. Formed,
A lower guide device is provided at the lower part of the counterweight,
A counterweight rail for guiding the lower guide device so as to be slidable in the vertical direction is provided to extend in the vertical direction in the elevator hoistway.
A rope type elevator characterized by that.   The car used in the hydraulic elevator is used as it is, and the car-side rope hitch provided in the car and the stand on which the jack of the hydraulic elevator is attached are provided. The rope type elevator according to claim 1 or 2, wherein both ends of the rope are connected to the stand side rope hitch.   The rope type elevator according to claim 1, wherein a shock absorber for the counterweight is provided on an upper portion of the jack.   3. The rope type elevator according to claim 2, wherein a shock absorber for the counterweight is provided on an upper portion of a stand to which the jack of the hydraulic elevator is attached. A counterweight sheave around which the rope is wound is provided on the upper part of the counterweight,
6. The counterweight sheave according to any one of claims 1 to 5, wherein the counterweight sheave is formed in a dimension that does not allow the cage rope hitch to enter a vertical projection plane of the counterweight sheave. Rope type elevator as described. An upper guide device is provided which is connected to an upper portion of the counterweight and is guided so as to be slidable in a vertical direction by a plunger rail which guides the plunger used in the hydraulic elevator so as to be slidable in a vertical direction.
The said upper guide apparatus is formed in the shape where the said cage side rope hitch does not enter in the projection surface of the orthogonal | vertical direction of this upper guide apparatus, The Claim 1 thru | or 6 characterized by the above-mentioned. Rope type elevator. An elevator renewal method for renewing a hydraulic elevator to a rope elevator,
Removing the hydraulic unit and hydraulic piping of the hydraulic elevator;
Filling a weight material into a hollow plunger supported by the jack of the hydraulic elevator so as to be movable up and down to form a counterweight; and
Hanging a rope around a newly installed hoisting device, and hanging the rope and the counterweight on the rope;
An elevator renewal method comprising:

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