JP2009196786A - Elevator repairing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator repairing method capable of renewing a controlling method by adopting a state-of-the-art elevator device having no machine room while using existing articles for main equipment such as a car and a guide rail without removing the whole of existing elevator devices, and further using an elevator machine room for other purposes than for an elevator. <P>SOLUTION: A main rope 11 is wound through a sheave of a winding machine 12 disposed at a hoistway lower part, guide sheaves 14, 15 disposed at a hoistway top portion, and a sheave 10 of a counterweight 5. One end of the main rope 11 is fixed on an existing suspended plate of the car, and the other end is fixed on an end bracket 17. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an elevator repair method.

  A general repair method for a conventional hydraulic elevator will be described with reference to FIGS. 4 and 5. FIG.

  FIG. 4 is an overall schematic diagram of a hydraulic elevator showing an embodiment according to the prior art, and FIG. 5 is a plan view of a hoistway of the hydraulic elevator showing an embodiment according to the prior art.

In the figure, a hoistway 1 is fixed with a car guide rail 3 for guiding a car 2 with brackets 4 and 7 and a plunger guide rail 6 for guiding a plunger 18 movably disposed in the cylinder. The guide rail 3 extends from the bottom of the hoistway 1 to near the top, and the plunger guide rail 6 extends from the middle of the hoistway to near the top. An elevator machine room 20 is formed in the vicinity of the hoistway 1, and a hydraulic unit 21 including an oil tank, an electric motor, a pump, a control valve, and the like is installed in the elevator machine room 20. Further, a control device 22 that electrically performs speed control and operation control of the car 2 is disposed.

  A suspension plate connected to an emergency stop device (not shown) is provided at the lower back of the car 2, and one end of the main rope is fixed to the suspension plate via a plunger pulley 19 disposed on the plunger 18. The other end is fixed to a fixing bracket (not shown) disposed near the cylinder below the hoistway. Accordingly, the elevator car 2 is moved up and down by the pressure oil from the hydraulic unit 21 so that the car 2 is moved up and down via the main rope 11.

Renewal of elevator performance and display control, etc., to reduce power consumption and reduce waiting time, repair methods are generally performed in a short period of time. 18, the guide rails 3, 6 and the like utilize existing products, and the control device 22 installed in the elevator machine room 20 is replaced with the latest type. (See Patent Document 1)
JP 2000-86118 A

  The hydraulic elevator controls the flow rate of pressure oil supplied to or discharged from the hydraulic jack to raise and lower the car. Therefore, there are advantages that the load on the building is light, the arrangement of the hydraulic units can be selected relatively freely, and the building can be utilized to the maximum. However, in recent years, in shared apartments such as condominiums, common areas such as stairs have not been included in the calculation of building floor area ratio.

Furthermore, since regulations such as the installation of a drive device in the hoistway have been taken in the elevator, each manufacturer does not require an elevator machine room and the drive device is installed in the hoistway. A rope type elevator that does not place a burden on the building side while being arranged is adopted as a standard type.

In addition, hydraulic elevators have disadvantages such as oil odor due to hydraulic oil, fluffy vibration due to pressure pulsation of hydraulic oil, and adjustment of control valves, which requires a skilled technician, and has recently become unacceptable.

  The object of the present invention has been made in view of the above-mentioned problems, and without removing all the existing elevator devices, the main equipment such as a car and a guide rail can be used while maintaining the existing products. It is an object of the present invention to provide a method for repairing an elevator that can be renewed to a rope type elevator and that the elevator machine room can be utilized for other uses other than the elevator.

  The purpose of the present invention is to control the pressure of hydraulic oil fed to a cylinder through an oil feed pipe by a hydraulic unit, so that a carriage supported by a plunger movably arranged in the cylinder is provided on a guide rail standing on a hoistway. In the renovation method for updating the control device and the drive device of the hydraulic elevator that is moved up and down, the car, the guide rail, etc. utilize existing products, and the newly installed drive device, counterweight and sheave are installed in the hoistway. This is achieved by arranging in

  As described above, according to the present invention, a guide rail is erected on the hoistway, and a carriage and a counterweight each guided along the guide rail are connected by at least two main ropes. In an elevator control device and a driving device renewal method in which a driving device having a sheave to be wound is arranged at the upper part of the hoistway, the driving car, the guide rail, etc. are already installed and a new driving device is installed. Since several sheaves that are newly installed at the lower part of the hoistway are arranged at the upper part of the hoistway and the upper part of the existing car, the main equipment such as the car and guide rails are already installed without removing all the existing elevator equipment. The crystal can be used and updated to the latest elevator, and the elevator machine room can be used for other applications than the elevator.

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

  1 is an overall schematic diagram of an elevator showing an embodiment of the present invention, FIG. 2 is a top plan view of an elevator hoistway showing an embodiment of the present invention, and FIG. 3 shows an embodiment of the present invention. It is a hoistway lower part top view of an elevator.

  In the figure, the guide rails 3 and 6 fixed by the car 2 and the brackets 4 and 7 in the hoistway 1 utilize existing products. A counterweight guide rail 9 for guiding the counterweight 5 is fixed by the bracket 8. At the top of the hoistway, cradles 16a and 16b are fixed to the guide rail 3 for the car, the guide rail 6 for the plunger, and the guide rail 9 for the counterweight by bolt fastening or welding, and the guide sheaves 14 and 15 and The end bracket 17 for fixing the main rope end is disposed. At the bottom of the hoistway, a hoisting machine 12 employed in a standard elevator of the type without a state-of-the-art machine room is placed on a guide rail 3 for a car and a guide rail 13 on a guide rail 9 for a counterweight. The guide rails 3 and 9 bear the upward load applied to the hoisting machine 12. The main rope 11 is wound around the net of the hoisting machine 12, the guide sheaves 14 and 15, and the sheave 10 of the counterweight 5, and attached to one side of the main rope 11.

  Moreover, since the machine room 20 becomes a vacant space, it can also be used for applications other than elevators by providing it to customers.

  Since it comprised as mentioned above, the existing goods can be utilized for the car 2 and the guide rail 3 only with some modifications. In addition, since the car 2 can be used, the core of the car 2 does not change even after the remodeling, so that it is possible to use a frame or a landing door (not shown). Furthermore, since the elevator machine room 20 can be used for other purposes other than the elevator, the effective floor area of the building can be expanded, and the asset value of the building is improved.

  Here, in the present embodiment, the case where the counterweight 5 and the counterweight guide rail 9 are newly installed has been described. However, when an existing counterweight is installed, the existing counterweight can be used, so that the present embodiment can be utilized. Even minor modifications can be made to repair work.

1 is an overall schematic diagram of an elevator according to an embodiment of the present invention. It is a hoistway top plan view of an elevator according to an embodiment of the present invention. It is a hoistway lower part top view of an elevator concerning one embodiment in the present invention. It is the whole elevator general | schematic figure which shows one embodiment by a prior art. It is a hoistway top view of the elevator which shows one embodiment by a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Passenger car 3 Guide rail 4 Bracket 5 Counterweight 6 Guide rail 7 Bracket 8 Bracket 9 Guide rail 10 Sheave 11 Main rope 12 Driving device 13 Base 14, 15 Guide sheave 16 Base 17 End bracket 18 Plunger 19 Plunger pulley 20 Machine room 21 Hydraulic unit 22 Control device

Claims (4)

  By controlling the pressure of the hydraulic oil sent to the cylinder through the oil feed pipe by the hydraulic unit, the car supported by the plunger movably arranged in the cylinder is raised and lowered along the guide rail standing on the hoistway. In a renovation method for updating a control device and a drive device of a hydraulic elevator, the control device and the drive device are removed, and at least the car and the guide rail utilize existing products, and the hydraulic control device and the drive device are used. An elevator refurbishment method characterized in that a new control device, a drive device, a counterweight, and a sheave are installed in a hoistway.   The drive sheave, the sheave arranged at the upper part of the hoistway, and one end of the main rope via the counterweight sheave are fixed to the existing suspension plate of the car and the other end on the hoistway The elevator repair method according to claim 1, wherein the elevator is fixed to a fixing bracket.   The elevator refurbishing method according to claim 1, wherein the newly installed driving device and the sheave are arranged on a rear surface of the car on a hoistway projection plane.   The newly installed drive device and the sheave are disposed on the rear surface of the car on the hoistway projection plane, and at least one of the sheaves is more than the suspension plate when the car is stopped on the top floor. The elevator repair method according to claim 1, wherein the elevator repair method is arranged at an upper portion.

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