JP5278360B2 - Renewal method of hydraulic elevator and rope type elevator renewed by the method - Google Patents

Description

  The present invention relates to a method for renewing an indirect hydraulic elevator called a side fork type as a rope type elevator, and a rope type elevator renewed by the method.

FIG. 1 is a longitudinal sectional view of a hoistway showing an example of an indirect hydraulic elevator called a side fork (side plunger) system, and FIG. 2 is a transverse sectional view of a hoistway showing an example of an indirect hydraulic elevator called a side fork system. is there. In the figure, 1 is a hoistway, 2 is a jack side guide rail standing on the hoistway 1, 3 is an elevator car, 4 is an upright column provided on both sides of the car 3 on the opposite side of the landing, and 5 is a car 3. The car 3 is cantilevered like a ricksack together with the uprights 4 with car support beams provided on both sides of the bottom of the car. 6 is a jack base installed in the pit of the hoistway 1, 7 is a jack extension provided at the upper part of the jack base 6, 8 is a hydraulic jack cylinder connected to the upper end of the jack extension 7, and 9 is a hydraulic pressure. A jack plunger, 10 is a push-up wheel provided at the top of a hydraulic jack plunger 9, 11 is a jack guide guided by the jack side guide rail 2, and 12 is a rope anchoring beam provided at the bottom of the car 3. No. 3 is provided on the side of the hydraulic jack so as to suspend the floor on the side opposite to the landing. Reference numeral 13 denotes a main rope wound around the push-up wheel 10, one end of which is fixed to the rope clamp 12 at the bottom of the car 3 and the other end is fixed to the jack stand 6. 14 is a rail stand installed in the pit of the hoistway 1, 15 is a rail bracket, and 16 is a landing entrance.
An indirect hydraulic elevator called a side fork system has a car 3 placed on one end of a main rope 13 wound around a push-up wheel 10 fixed to the top of a plunger 9 of a hydraulic jack standing in a hoistway 1. The other end of the main rope 13 is fastened to the jack base 6 below the hydraulic jack, and the car 3 is lifted and lowered by the hydraulic pressure of a power unit (not shown) installed in the machine room adjacent to the hoistway 1. Is a method of moving up and down. The movement amount of the car 3 is twice the movement amount of the plunger 9 of the hydraulic jack, and the length when the plunger 9 of the hydraulic jack is fully compressed is about half of the lifting / lowering stroke. In this system, the upright column 4 and the car support beam 5 provided on the opposite side of the car 3 support the car 3 in a cantilever manner like a ricksack, and the main rope 13 holds the rope of the floor of the car 3. Since the beam 12 is suspended, a reaction force that bends the rail on the car 3 side acts, so that it is necessary to use a large-sized guide rail.
The indirect hydraulic elevator configured as described above is widely used in low-rise buildings because of its simple structure and the ability to install a machine room at an arbitrary position away from the hoistway.
However, in recent years, there has been a high demand for energy saving and a clean environment, and there has been a demand for a renewal to a rope type elevator that has high energy efficiency and can easily improve transportation efficiency. Therefore, it was necessary to renew the traction-type rope elevator with a car and a counterweight suspended at both ends of a main rope wound around a sheave fastened to a hoist installed in a hoistway.

  Also, as a conventional technology, there is a hydraulic elevator renewal method that reduces the cost required for renewal by simply using the components of the hydraulic elevator as components of the machine room elevator and removing the plunger rail from the components mounted on the hydraulic elevator. It has been proposed (see, for example, Patent Document 1). In addition, as another conventional technology, the existing hydraulic cylinder and plunger are not removed and fixed as they are with a bracket or the like as a base, and the existing rotary sheave at the top of the plunger is removed, and a thin electric hoist is newly added. In addition to providing a lifting weight in the hoistway, the main electric rope is connected to the lifting weight by the main rope via the rotating sheave of the thin electric hoist to control the thin electric hoist There has been proposed an elevator renewal method in which a microcomputer control panel is newly provided and renewed as a rope type elevator (for example, see Patent Document 2).

JP 2002-37563 A JP 2003-34474 A

  When renewing an indirect hydraulic elevator as a rope elevator, removing the long hydraulic jack from the hoistway requires cutting and dividing the hydraulic jack, which not only involves a lot of labor but also noise during cutting. However, a long construction period was necessary. Further, the removed product must be disposed of as waste material, which is not environmentally preferable. In addition, the conventional hydraulic elevator renewal methods are all indirect hydraulic elevator renewal methods, but the hydraulic jack is not effectively used as a counterweight.

  The present invention has been made to solve the above-described problems. When an indirect hydraulic elevator is renewed as a rope elevator, the existing hydraulic jack is not removed and the hydraulic jack is balanced with the weight frame. The present invention provides a hydraulic elevator renewal method configured and utilizing an existing hydraulic jack as a part of a counterweight, and a rope type elevator renewed by the method.

The hydraulic elevator renewal method according to the present invention comprises a hydraulic jack cylinder and plunger in a hoistway, and is cantilevered by a car support beam at one end of a main rope wound around a push-up wheel fixed to the top of the plunger. A method of renewing a rope-type elevator to an indirect hydraulic elevator that fastens the cage rope and fastens the other end of the main rope to the fixed side of the hydraulic jack and raises and lowers the cage as the hydraulic jack plunger moves up and down Because
A new rope-type counterweight-side guide rail is installed in the hoistway side space of the existing jack-side guide rail, and is wound between the uppermost ends of the counterweight-side guide rails and between the uppermost ends of the jack-side guide rails. The upper machine base is placed and fixed , the hoisting machine and the counterweight side rope stopper are installed on the hoisting machine base, the pressure and hydraulic fluid of the existing hydraulic jack are released, the push-up car on the upper part of the hydraulic jack is removed, and the existing one is installed. the hydraulic jack is totally compressed integrally assembled to the central portion of the weight frame balance, the balance across the entire compressed existing hydraulic jack of the central portion of the weight frame loading distributes additional weight on the right and left sides, of the counterweight frame Attach the weight hanging car balance in the central portion, and removing the existing rope support beam of the car, a new car-side rope across on whether your support Harima to have the car piece support Install a girder, fasten a new cage-side leash to one end of the main rope that is wound around the sheave of the hoisting machine, and balance the other end of the main rope to the hoisting machine via the weight suspension wheel. The existing hydraulic jack fixed to the counterweight-side leash-stop portion and integrally compressed to the counterweight frame and fully compressed, and the additional weight distributed to the left and right sides of the existing hydraulic jack are suspended.

  Further, the counterweight suspension vehicle is attached to the lower part of the counterweight frame.

  The counterweight suspension vehicle is provided so as to protrude from the side surface of the counterweight on the side opposite to the hoistway (the car side) when viewed in plan.

In addition, it is a renewal of an indirect hydraulic elevator to a rope type elevator, and is a rope type counterweight side guide newly installed in the existing jack side guide rail and the hoistway side space of the existing jack side guide rail. A rail, a hoisting machine base placed and fixed between the uppermost ends of the counterweight side guide rail and between the uppermost end parts of the jack side guide rail, and a hoisting machine installed on the hoisting machine base, a weight-side rope hitch balance installed on machine base in winding, the pressure is removed and the operating oil of the existing hydraulic jack, remove the push car of the existing hydraulic jack top, integrally existing hydraulic jack totally compressed in central add to the counterweight frame is assembled, were loaded are distributed on the left and right both sides of the existing hydraulic jack which is full compression of the central portion of the counterweight frame Weight and, and the counterweight suspending pulley attached to the central part of the weight frame balance, and removing the existing rope support beam of the car, car-side rope of new installed across or your support Harima to have the car piece support and stop the beam, is wound around the sheave of the hoisting machine, one end to enter into a new cage-side rope fastener beam, the other end a counterweight to the counterweight side rope fastener portion of the upper machine base winding through a weight suspension sheave An existing hydraulic jack that is fixed and assembled integrally with a counterweight frame and is fully compressed, and a main rope that suspends an additional weight distributed to the left and right sides of the existing hydraulic jack are provided.

  According to this invention, since it is not necessary to carry out the existing hydraulic jack, the construction period can be shortened. Further, since the weight of the hydraulic jack can be used as the weight of the weight, the additional weight can be reduced. Moreover, since the hydraulic jack is not cut, noise during construction can be suppressed.

It is a longitudinal cross-sectional view of the hoistway which shows an example of the existing indirect hydraulic elevator. It is a cross-sectional view of a hoistway showing an example of an existing indirect hydraulic elevator. It is a longitudinal cross-sectional view of the hoistway which shows the rope type elevator renewed by the renewal method in Example 1 of this invention. It is a cross-sectional top view of the hoistway which shows the rope type elevator renewed by the renewal method in Example 1 of this invention. It is a cross-sectional top view of the hoistway top part which shows the rope type elevator renewed by the renewal method in Example 1 of this invention.

Example 1.
1 is a longitudinal sectional view of a hoistway showing an example of an existing indirect hydraulic elevator, FIG. 2 is a transverse sectional view of a hoistway showing an example of an existing indirect hydraulic elevator, and FIG. 3 is a first embodiment of the present invention. Fig. 4 is a longitudinal sectional view of a hoistway showing a rope-type elevator renewed by the renewal method, Fig. 4 is a cross-sectional plan view of the hoistway showing a rope-type elevator renewed by the renewal method in Embodiment 1 of the present invention, and Fig. 5 is this It is a cross-sectional top view of the hoistway top part which shows the rope type elevator renewed by the renewal method in Embodiment 1 of invention.

  The existing indirect hydraulic elevator shown in FIGS. 1 to 2 has the same configuration as the conventional one, 1 is a hoistway, 2 is a jack side guide rail standing on the hoistway 1, 3 is an elevator car, 4 is Standing poles provided on both sides of the car 3 on the side opposite to the landing side, 5 is a car support beam provided on both sides on the side opposite to the landing side of the car 3 and cantilever the car 3 together with the standing pillar 4 like a ricksack. I support it. 6 is a jack base installed in the pit of the hoistway 1, 7 is a jack extension provided at the upper part of the jack base 6, 8 is a hydraulic jack cylinder connected to the upper end of the jack extension 7, and 9 is a hydraulic pressure. A jack plunger, 10 is a push-up wheel provided at the top of a hydraulic jack plunger 9, 11 is a jack guide guided by the jack side guide rail 2, and 12 is a rope anchoring beam provided at the bottom of the car 3. No. 3 is provided on the side of the hydraulic jack so as to suspend the floor on the side opposite to the landing. Reference numeral 13 denotes a main rope wound around the push-up wheel 10, one end of which is fixed to the rope clamp 12 at the bottom of the car 3 and the other end is fixed to the jack stand 6. 14 is a rail stand installed in the pit of the hoistway 1, 15 is a rail bracket, and 16 is a landing entrance.

The rope type elevator which renewed the existing indirect hydraulic elevator comprised in this way to the rope type elevator is shown in FIGS.
3 to 5, the same reference numerals as those in FIGS. 1 to 2 denote the same or corresponding parts. Reference numeral 17 denotes a rope-type counterweight-side guide rail newly installed in the hoistway wall side space of the existing jack-side guide rail 2, and reference numeral 18 denotes between the upper ends of the counterweight-side guide rail 17 and the existing jack-side guide rail. 2, a hoisting machine stand installed horizontally across the upper end portions of the hoisting machine 19, a hoisting machine installed by lifting on the hoisting machine stand 18, and 20 a driving sheave for the hoisting machine 19, 21 Is a brake device of the hoisting machine 19, 22 is a rope holding plate provided at the lower part of the hoisting machine base 18, 23 is a counterweight frame guided by the counterweight side guide rail 17, and 24 is the center of the counterweight frame 23. It is an existing hydraulic jack provided in the vertical direction to the part, and has the shortest length (fully compressed state) in which the plunger 9 is accommodated in the cylinder 8. Reference numeral 25 denotes an additional weight provided on the left and right sides of the hydraulic jack 24 at the center of the counterweight frame 23, and reference numeral 26 denotes a counterweight lower suspension car provided at the lower center of the counterweight frame 23. It slightly protrudes from the side of the counterweight side (cage side) of the counterweight when viewed in plan. Reference numeral 27 denotes a newly installed cage-side tie-down beam provided between the cage support beams 5 provided on both sides of the bottom of the cage 3 on the side opposite to the landing. The existing tie-down beam 12 is removed. . 28 is a rope-type elevator main rope wound around the driving sheave 20 of the hoisting machine 19, and one end is fastened to a new car rope retaining beam 27 provided at the bottom of the car 3 to suspend the car 3. The other end is returned upward via the counterweight lower suspension wheel 26 and is fastened to the rope holding plate 22 provided on the hoisting machine base 18 to suspend the counterweight. 29 is a rail base installed in the hoistway wall side space of the pit of the hoistway 1 and supports the existing jack side guide rail 2 and the newly installed rope-type counterweight side guide rail 17. Reference numeral 30 is a car-side shock absorber, and 31 is a counterweight-side shock absorber.

In the elevator renewed to the rope type elevator as described above, the moving amount of the car 3 is twice the moving amount of the counterweight constructed integrally with the existing hydraulic jack 24. The counterweight is integrally formed with the additional weight 25 as the shortest length (full compression state) in which the plunger 9 is accommodated in the cylinder 8 of the existing hydraulic jack. Also, with this method, the vertical load due to the lifting load of the counterweight and the counterweight rail acts, but the rail on the cage side originally uses a large size rail to withstand the reaction force of the large cage. There is no need to replace it, and the counterweight side rail must be newly installed.
Normally, hydraulic jacks are installed at approximately half the length of the lifting stroke, so if the lifting stroke is long, the jack body will be long and may not fit within the height of the counterweight frame determined by the required weight of the counterweight. is there. Therefore, since the suspension wheel 26 is provided at the lower part of the counterweight and the hydraulic jack 24 is incorporated with reference to the lower surface of the counterweight frame 23, the hydraulic jack 24 protrudes upward from the upper frame of the counterweight frame 23. It becomes composition. Therefore, when the car 3 is located on the top floor, it can be installed so that the counterweight is located near the bottom floor. Since the counterweight constructed in this way moves only half of the car's lifting process, it can move up and down with an appropriate gap from the lower surface and ceiling of the hoistway.

Next, the procedure of the renewal method according to the present invention will be described.
First, the hydraulic elevator is operated, and a rope-type counterweight side guide rail 17 is newly installed in the hoistway wall side space of the existing jack side guide rail 2. Next, the hydraulic elevator is operated, and the hoisting machine base 18 is attached across the upper end portions of the counterweight side guide rails 17 and the upper end portions of the existing jack side guide rails 2. Next, the hydraulic elevator is operated, and the hoisting machine 19 is lifted and installed on the hoisting machine base 18. Then, the rope stopping plate 22 is fixed to the lower part of the hoisting machine base 18. Next, the car-side tie-down beam 12 is removed, and a new car-side tie-down beam 27 is installed across the car support beams 5 provided on both sides of the bottom of the car 3 on the side opposite to the landing. One end of the main rope 28 of the rope type elevator is fastened to the side rope retaining beam 27. The main rope 28 is wound around the driving sheave 20 of the hoist 19 and the rest is temporarily placed in the pit. The car 3 is suspended from the hoisting machine base 18 by a lifting tool (not shown). Next, the pressure and hydraulic oil inside the hydraulic jack are released. And the piping in the hoistway 1 and the jack stand 6 are removed, and the push-up wheel 10 above the hydraulic jack is removed. Next, the hydraulic jack 24 is fully compressed and assembled to the counterweight frame 23 to be integrated. The push-up wheel 10 removed from the upper portion of the hydraulic jack is attached to the lower side surface of the counterweight frame 23 as a counterweight lower suspension wheel 26. Next, the additional weights 25 are sorted and loaded on the left and right sides of the hydraulic jack 24 at the center of the counterweight frame 23. Next, the counterweight frame 23 is lifted to a predetermined height by a lifting device (not shown), and placed on a counterweight receiving base (not shown). Then, the main rope 28 is passed through the counterweight lower suspension wheel 26 attached to the lower center portion of the counterweight frame 23, and the other end of the main rope 28 is pulled up and fixed to the rope clamp plate 22 of the hoisting machine base 18. Next, the weight side shock absorber 31 is installed in the pit of the hoistway 1. Next, the lifting tool (not shown) that holds the car 3 is loosened, the car 3 is lowered, and the car 3 is hung by the main rope 28. Further, the counterweight is suspended by a lifting device (not shown), and the cradle (not shown) under the counterweight is removed. Finally, the lifting device (not shown) is removed, the piping and machine room hydraulic devices are removed, and the renewal is completed. Note that the order of the procedures may be slightly different.

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Jack side guide rail 3 Elevator car 4 Standing pillar 5 Car support beam 6 Jack stand 7 Jack extension tool 8 Hydraulic jack cylinder 9 Hydraulic jack plunger 10 Push-up car 11 Jack guide 12 Tightening beam 13 Main rope 14 Rail Base 15 Rail bracket 16 Entrance / exit 17 Balanced weight side guide rail 18 Hoisting machine stand 19 Hoisting machine 20 Drive sheave 21 Brake device 22 Tightening plate 23 Balanced weight frame 24 Existing hydraulic jack 25 Additional weight 26 Weighted lower part suspension Car 27 Car side rope clamp 28 Rope elevator main rope 29 Rail base 30 Car side shock absorber 31 Counterweight side shock absorber

Claims (6)

A hydraulic jack cylinder and a plunger are provided in the hoistway, and a cage rope retaining beam supported by a cantilever is fastened to one end of a main rope wound around a push-up wheel fixed to the top of the plunger. The other end of the main rope is fastened to the fixed side of the hydraulic jack, and the indirect hydraulic elevator that raises and lowers the car together with the raising and lowering of the plunger of the hydraulic jack is renewed to a rope type elevator,
A rope-type counterweight-side guide rail is newly installed in the hoistway side space of the existing jack-side guide rail, and straddles between the uppermost end of the counterweight-side guide rail and the uppermost end of the jack-side guide rail. The hoisting machine base is placed and fixed, and the hoisting machine and the counterweight side rope stop are installed on the hoisting machine base. Remove the existing hydraulic jack totally compressed integrally assembled to the central portion of the weight frame counterweight, the distribution of the total compressed the existing added on the left and right both sides of the hydraulic jack weight of the central portion of the counterweight frame Te loading, the counterweight attached to counterweight suspension sheave counterweight in a central portion of the weight frame, and removing the existing rope support beam of the car, before having the car piece support A new cage-side tie-down beam is installed across the cage support beams, and a new cage-side tie-down beam is fastened to one end of the main rope wound around the sheave of the hoisting machine. Are fixed to the counterweight side rope stopper of the hoisting machine base via the counterweight suspension vehicle, and are assembled to the counterweight frame and are fully compressed and fully compressed, and both left and right sides of the existing hydraulic jack. A method for renewing a hydraulic elevator, wherein the additional weight distributed to the vehicle is suspended.   2. The hydraulic elevator renewal method according to claim 1, wherein the counterweight suspension vehicle is attached to a lower portion of the counterweight frame.   3. The hydraulic elevator renewal method according to claim 2, wherein the counterweight suspension vehicle is provided so as to protrude from a side surface of the counterweight on the side opposite to the hoistway (car side) when viewed in plan. A hydraulic jack cylinder and a plunger are provided in the hoistway, and a cage rope retaining beam supported by a cantilever is fastened to one end of a main rope wound around a push-up wheel fixed to the top of the plunger. The other end of the main rope is fastened to the fixed side of the hydraulic jack, and the indirect hydraulic elevator that raises and lowers the car together with the raising and lowering of the plunger of the hydraulic jack is renewed from a rope type elevator,
An existing jack-side guide rail;
A rope-type counterweight-side guide rail newly installed in the hoistway-side space of the existing jack-side guide rail;
A hoisting machine base mounted and fixed across the uppermost ends of the counterweight-side guide rails and between the uppermost ends of the jack-side guide rails;
A hoisting machine installed on the hoisting machine stand;
A counterweight side leash stop portion installed on the hoisting machine stand;
A counterweight frame in which the pressure and hydraulic oil of the existing hydraulic jack are removed, the push-up wheel on the upper part of the existing hydraulic jack is removed, and the existing hydraulic jack that has been fully compressed is integrally assembled in the center part ,
An additional weight distributed and loaded on both left and right sides across the existing hydraulic jack that is fully compressed at the center of the counterweight frame;
A counterweight suspension vehicle attached to the center of the counterweight frame;
A new cage-side leash beam installed between the cage-supporting beams, which removes the existing rope-resisting beam of the cage and cantilever-supports the cage;
It is wound around the sheave of the hoisting machine, fastened with a new car-side leash-stopping beam at one end, and fixed at the other end to the counterweight-side tuft-fastening part of the hoisting machine base via the counterweight suspension car A main rope that suspends the additional weight distributed to the left and right sides of the existing hydraulic jack and the existing hydraulic jack that are integrally assembled to the counterweight frame and fully compressed ;
Rope type elevator renewed from hydraulic type, characterized by comprising 5. The rope type elevator renewed from a hydraulic type according to claim 4 , wherein the counterweight suspension vehicle is attached to a lower portion of the counterweight frame. 6. The rope type elevator renewed from a hydraulic type according to claim 5 , wherein the counterweight suspension vehicle is provided so as to protrude from a side surface of the counterweight on the side opposite to the hoistway (cage side) when viewed in plan.

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