JP2014213981A - Method to renew hydraulic-type elevator to rope-type elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method which can renew a hydraulic-type elevator installed to an existing structure building to a rope-type elevator without depending on a new leg.SOLUTION: In a hydraulic-type elevator which comprises a hydraulic jack mechanism 7 including at least a jack rail 25 and a hydraulic jack 21 supported by jack legs 31 in a hoistway 3, the hydraulic jack mechanism is removed while the jack legs are left, a balance weight mechanism 107 including at least a balance weight guide rail 135 and a balance weight 133 is arranged in a space from which the hydraulic jack mechanism is removed, and the balance weight guide rail 135 is supported by the jack legs, to obtain a rope-type elevator.

Description

  The present invention relates to a method for renewing a hydraulic elevator to a rope elevator.

  Conventionally, a method of renewing an existing hydraulic elevator to a rope type elevator has been implemented.

  For example, in Patent Document 1, when placing a hoist that drives a rope, a new rail is provided in a position where there is no hindrance to the operation of the hydraulic jack, and a temporary bracket is additionally provided. A method of supporting a machine bed with these new rails and a temporary bracket and installing a hoisting machine on the machine bed is disclosed.

  Patent Document 2 discloses a renewal method in which a hydraulic jack used in a hydraulic elevator is left and the hydraulic jack is used to support a guide rail for a counterweight.

JP 2011-241019 A JP 2011-157156 A

  However, the method disclosed in Patent Document 1 described above is actually used for reinforcement to reinforce the new rail in the vicinity of the new rail that receives the load of the counterweight when it is to be implemented in a flexible structure building. There is a problem that a standing pillar is necessary.

  In addition, the method disclosed in Patent Document 2 described above has a problem that a reinforcing upright for reinforcing the rail is separately required for the rail that is not supported by the hydraulic jack.

  The present invention has been made in view of the above, and an object of the present invention is to provide a renewal method capable of renewing a hydraulic elevator installed in an existing structural building to a rope type elevator without relying on a new vertical pole. And

  In order to achieve the above-described object, a method for renewing a hydraulic elevator according to the present invention into a rope-type elevator includes a hydraulic jack mechanism including at least a jack rail and a hydraulic jack supported by a jack upright in a hoistway. In the hydraulic elevator provided, the hydraulic jack mechanism is removed while leaving the jack column, and a counterweight mechanism including at least a counterweight guide rail and a counterweight is disposed in the space from which the hydraulic jack mechanism is removed. The counterweight guide rail is supported by the jack uprights to obtain a rope type elevator.

  ADVANTAGE OF THE INVENTION According to this invention, the hydraulic elevator installed in the existing flexible structure building can be renewed to a rope type elevator, without relying on a new standing pillar.

It is a figure which shows in plan the structure of the existing hydraulic elevator before renewal. It is a figure of the same aspect as FIG. 1 regarding the rope type elevator after renewal. It is a figure which expands and shows a counterweight mechanism in FIG. It is a side view of the lower part of the hoistway regarding the rope type elevator after renewal. It is a side view which shows a part of hoistway along the VV line of FIG.

  Embodiments of a method for renewing a hydraulic elevator according to the present invention into a rope elevator will be described below with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

Embodiment 1 FIG.
FIG. 1 is a plan view showing a configuration of an existing hydraulic elevator before renewal. The hydraulic elevator 1 mainly includes a car 5 and a hydraulic jack mechanism 7 in the hoistway 3. The car 5 is guided to move up and down in the hoistway 3 by a pair of left and right car guide rails 9 provided on both sides thereof. The car guide rails 9 are attached to a corresponding pair of car rail brackets 11. Further, the car rail bracket 11 is supported by a car-side rail upright 13.

  The hydraulic jack mechanism 7 includes a hydraulic jack 21, a push wheel 23, and a pair of jack rails 25. The hydraulic jack 21 includes a hydraulic cylinder and a hydraulic plunger that is driven up and down by the hydraulic cylinder. The push wheel 23 is provided at the top of the hydraulic plunger in the hydraulic jack 21. Further, the pair of jack rails 25 are disposed on both sides of the hydraulic jack 21 in plan view, and the hydraulic plunger is lifted and lowered (expanded / contracted) more stably by a jack guide (not shown) guided by the pair of jack rails 25. ) Is supported.

  The pair of jack rails 25 are attached to a corresponding pair of jack rail brackets 27. Further, the jack rail bracket 27 is supported by a plurality of jack uprights 31 via a jack rail bracket mounting bracket 29.

  In short, in the first embodiment, at the time of renewal, the jack column 31 is left, and the configuration of the dotted line indicated by the reference character C in the hydraulic jack mechanism 7 is removed.

  FIG. 2 is a view similar to FIG. 1 regarding the rope type elevator after the renewal. The renewed rope type elevator 101 is newly provided with a counterweight mechanism 107 in the region where the hydraulic jack mechanism 7 exists in the hoistway 3.

  The counterweight mechanism 107 includes a counterweight 133 and a pair of counterweight guide rails 135. The counterweight 133 is suspended from one end of a known rope (not shown), and the car 5 is suspended from the other end of the rope. The pair of counterweight guide rails 135 are disposed on both sides of the counterweight 133 in plan view, and the counterweight 133 is guided in the up-and-down direction by the pair of counterweight guide rails 135.

  The pair of counterweight guide rails 135 are attached to the corresponding pair of counterweight rail brackets 137. Further, the counterweight rail bracket 137 is supported by the plurality of jack uprights 31 via the counterweight rail bracket attachment 139.

  Details of the counterweight mechanism 107 newly provided in the rope type elevator 101 will be described. FIG. 3 is an enlarged view of the counterweight mechanism in FIG. As described above, the counterweight mechanism 107 is newly installed in the space where the hydraulic jack mechanism 7 in the area indicated by the symbol C in the hydraulic elevator 1 is removed. The code | symbol 3a is an existing hoistway wall surface, and the existing jack stand pillar 31 extended along this hoistway wall surface 3a is diverted as it is.

  A counterweight rail bracket mounting bracket 139 is fixed to the jack column 31. The counterweight rail bracket mounting bracket 139 further supports a pair of counterweight rail brackets 137, and further a pair of counterweights. A pair of counterweight guide rails 135 are supported by the rail bracket 137. The counterweight rail bracket mounting bracket 139 can be fixed to the jack upright 31 by, for example, welding or bolt fastening.

  Further, when the outer lines of the existing jack pillars 31 are defined lines R as indicated by the alternate long and short dash line, the newly installed counterweight rail bracket mounting metal 139, the counterweight rail bracket 137, the counterweight guide The rail 135 and the counterweight 133 are arranged so as not to protrude outward in the left-right direction from between the pair of defined lines R. As a result, even when long objects such as control cables and ropes are shaken due to an earthquake, a structure in which the long objects are not caught by the counterweight mechanism 107 or the upright column 31 for jack (a structure that does not go around) is realized. Can do.

  Further, in the lower part of the hoistway 3, a shock absorber for a counterweight is installed in a portion where the hydraulic jack mechanism 7 is removed. FIG. 4 is a side view of the lower part of the hoistway related to the rope type elevator after renewal.

  As shown in FIG. 4, a counterweight-side buffer base 141 is installed at the lower part of the hoistway 3. The counterweight-side shock absorber table 141 supports the pair of counterweight guide rails 135 and the counterweight buffer 143 described above.

  The counterweight-side shock absorber base 141 is supported by a plurality of adjusting portions 145 in a state where an appropriate gap is secured between the hydraulic jack mechanism 7 and the hoistway pit floor surface after removal. The adjustment unit 145 has a height of at least 10 mm (adjustment amount of 10 mm or more), and is prepared at a different height for each position on the pit floor according to the unevenness of the pit floor. As a specific illustrated example, each of the adjusting units 145 is configured by a plurality of stacked scissors, but is not limited thereto, and may be configured by, for example, a jack bolt mechanism. Moreover, in the example of illustration, the adjustment part 145 is arrange | positioned under the both ends of the left-right direction of the balance weight side buffer stand 141. FIG.

  In a hydraulic elevator, a part of the hydraulic jack mechanism is usually embedded in the concrete of the pit (or positioned by the concrete), and it is necessary to dig a surrounding floor surface with the removal. Therefore, the pit floor after removal of the hydraulic jack mechanism is not flat. On the other hand, the balance weight side shock absorber base of the rope type elevator is generally made on the assumption that the pit floor surface is flattened, so adjustment with a small amount of scissors for leveling Only mechanism is prepared. That is, in order to install a general counterweight-side shock absorber table, it is necessary to finish the pit floor with concrete. However, this means that the counterweight-side shock absorber base cannot be installed until the concrete is dried, and further, it is necessary to extend the construction period by the period for ensuring drying.

  In order to deal with such a problem, in the present embodiment, since the adjustment unit 145 that is an adjustment mechanism of 10 mm or more is used, the hydraulic jack mechanism 7 of the hydraulic elevator 1 is removed and is flattened. There is an advantage that the counterweight-side shock absorber base 141 can be placed horizontally without requiring finishing of concrete or the like on the pit floor surface 3b, and the extension of the construction period can be avoided.

  In addition, when an adjustment mechanism of 10 mm or more is provided in order to obtain the above advantages, the gap between the counterweight-side shock absorber table and the pit floor surface becomes relatively large. May cause a large deformation of the counterweight-side shock absorber base. Therefore, in the present embodiment, a protrusion 141a that protrudes downward is provided on the lower surface of the counterweight-side shock absorber base 141 (particularly the central portion of the lower surface in the left-right direction). Accordingly, an adjustment mechanism of 10 mm or more is provided, and it is possible to install the counterweight-side buffer base 141 without requiring careful finishing on the pit floor surface 3b after the removal of the hydraulic jack mechanism, and at the same time, by any chance. Even when the counterweight collides with the counterweight buffer, it is possible to suppress a large deformation of the counterweight-side buffer base 141 by the protrusion 141a coming into contact with the pit floor surface 3b.

  In general, the load applied to the support portion by the counterweight is greater than the load applied to the support portion by the hydraulic jack. Furthermore, the balance rate of the counterweight (generally, what percentage of the rated load is loaded on the car is the balance between the car side and the counterweight side) is 40 to 50%. In order to reduce the load applied to the support portion, the load on the established column can be suppressed by setting the balance rate of the counterweight to about 0 to 30%. In that case, since the unbalance at the rated load becomes large, it is necessary to select a brake or motor corresponding to the torque required for lifting and lowering, and the equipment cost may increase slightly, but a new vertical column is installed over the entire height of the hoistway. Compared to the cost to be established, the aspect of utilizing the established pillar of the first embodiment is considerably cheaper in terms of the overall cost.

  Next, a measure for reducing the burden on the established pillar will be described with reference to FIG. FIG. 5 is a side view showing a part of the hoistway along the line VV in FIG. 3. As shown in FIG. 5, in the hydraulic elevator 1, the existing jack rail bracket mounting position 51 is approximately at an intermediate position with respect to the standing column length L between the two floor building beams 147 arranged vertically. It was set. On the other hand, in the rope type elevator 101, the rail bracket mounting range 151 for the counterweight is set at the end of each floor building beam 147 (fixed point of the standing column 31 for jack to each floor building beam 147) as shown by the oblique line in the figure. To L / 4, and by installing a counterweight rail bracket mounting metal 139 as shown in the figure, the stress received by the upright column 31 is the same even when a load twice that of the hydraulic elevator 1 is applied. It can be:

  In an actual project, using a combination of the above balance ratio setting of the counterweight and the setting of the fixing position (fixed position in the height direction) of the bracket bracket for the counterweight with respect to the vertical column, compared to a jack It is possible to support a counterweight with a large load, diverting (utilizing) a vertical pole, enabling a counterweight to be installed without newly installing a vertical pole in the hoistway, and renewing from a hydraulic elevator to a rope-type elevator It can be implemented at low cost.

  As described above, according to the method of renewing the hydraulic elevator according to the first embodiment to the rope type elevator, the existing hydraulic jack mechanism is removed, and a new counterweight is installed in the space near the removed jack. By installing the mechanism, it is possible to divert the standing pillar installed to support the existing hydraulic jack and newly support the counterweight guide rail, so when installing the counterweight the rail bracket In order to fix it, it is not necessary to install a new upright in the hoistway. Thereby, the stop period of the elevator for construction becomes short, and a user's convenience improves. In particular, the construction of installing the vertical pillar in the hoistway requires not only large-scale construction work, but also the existing elevator car needs to be temporarily removed in order to secure the carry-in route and work space. In addition, when a standing pillar is brought into the hoistway, a long standing pole cannot usually be put in due to conditions such as the already completed three-way frame of the landing and the depth of the hoistway. Therefore, installation may be difficult when the dimension between building beams on each floor is large. In order to deal with such a problem, according to the first embodiment, it is possible to complete the renewal even for a property in which complicated work is not required and it is difficult to newly introduce a long standing pillar.

  Moreover, since the balance rate of the counterweight newly installed is set between 0% and 30%, it is possible to suppress the load on the existing columns. The existing pillars were originally installed to receive the lateral load (horizontal load) of the hydraulic jack and to support the rails for the jack, and the load of the newly installed counterweight (50% balance, etc.) The strength may be insufficient to support. Even in such a case, by reducing the weight of the counterweight, the load can be reduced and the upright column can be used. In addition, hydraulic elevators are often installed in low-rise apartments, etc. In actual operation, about 2 to 4 people (one family) get on the 9-seater (loading capacity 600 kg) elevator from the first floor. In many cases, the car travels to the 5th floor, and after getting off, an empty car travels to the 1st floor. That is, the average boarding rate is about 25%. Setting the balance rate to 0 to 30% is a setting close to the average balance rate during normal operation, so that on average, driving in a balanced state increases and an energy saving effect is obtained. Can also be expected.

  In addition, the rail bracket mounting range for the counterweight in the existing column is set from the fixed point of the existing column to the building beam on each floor to ¼ of the length L of the upright column for jack. The bending stress received can be reduced, and the burden can be reduced. This makes it possible to support a bracket for a new counterweight having a larger load than that of an existing jack even if an existing pillar is used.

  In addition, after removing the hydraulic jack mechanism, the counterweight-side shock absorber base is installed in a state where a clearance is secured between the pit floor surface and the adjusting pit floor surface without finishing the pit floor surface of the hoistway. Because it is arranged, it is not necessary to finish the pit floor flat after removing the hydraulic jack mechanism while taking the aspect of placing the counterweight mechanism in the place where the hydraulic jack mechanism was located, and the elevator stop period for construction Can be shortened. Furthermore, in that case, if a protrusion projecting downward is provided on the lower surface of the counterweight-side shock absorber table, even if the counterweight collides with the shock absorber on the counterweight-side shock absorber table, the counterweight However, the amount of deformation of the counterweight-side shock absorber base can be suppressed, and the influence on the rail fixing portion can be reduced.

  When the outer lines of the pair of jack columns are defined lines, the counterweight rail bracket mounting bracket, the counterweight rail bracket, the counterweight guide rail, and the counterweight protrude beyond the pair of defined lines. Since it is arranged so that it does not occur, it is possible to prevent the occurrence of catching troubles such as ropes and control cables.

  Although the contents of the present invention have been specifically described with reference to the preferred embodiments, various modifications can be made by those skilled in the art based on the basic technical idea and teachings of the present invention. It is self-explanatory.

  DESCRIPTION OF SYMBOLS 1 Hydraulic elevator, 3 hoistway, 7 Hydraulic jack mechanism, 21 Hydraulic jack, 25 Jack rail, 27 Jack rail bracket, 29 Jack rail bracket mounting metal, 31 Jack stand pillar, 101 Rope type elevator, 107 Counterweight mechanism 133 Balance Weight, 135 Balance Weight Guide Rail, 137 Balance Weight Rail Bracket, 139 Balance Weight Rail Bracket Mount, 141 Balance Weight Side Shock Absorber Stand, 143 Balance Weight Shock Absorber, 145 Adjustment Unit, 147 Building Beam on Each Floor .

Claims (6)

In a hydraulic elevator having a hydraulic jack mechanism including at least a jack rail and a hydraulic jack supported by a jack vertical pillar in a hoistway, the hydraulic jack mechanism is removed while leaving the jack vertical pillar,
In the space where the hydraulic jack mechanism is removed, a counterweight mechanism including at least a counterweight guide rail and a counterweight is arranged, and the counterweight guide rail is supported by the jack upright to obtain a rope-type elevator.
Renewal of hydraulic elevator to rope type elevator. The balance ratio of the newly installed counterweight is set between 0% and 30%.
A method of renewing the hydraulic elevator of claim 1 into a rope elevator. In addition to the counterweight guide rail and the counterweight, the counterweight mechanism includes a counterweight rail bracket mounting metal supported by the jack column and a counterweight rail supported by the counterweight rail bracket mounting metal. Brackets and
The rail bracket mounting range for the counterweight in the jack upright is set in a range from the fixing point of the jack upright to the building beam on each floor to 1/4 of the length L of the jack upright.
A method for renewing a hydraulic elevator according to claim 1 or 2 to a rope type elevator. After removing the hydraulic jack mechanism, the counterweight-side shock absorber base is installed in a state where a clearance is secured between the pit floor surface and the adjusting pit floor surface without finishing the pit floor surface of the hoistway. Deploy,
A method for renewing the hydraulic elevator according to any one of claims 1 to 3 into a rope elevator. A protrusion projecting downward is provided on the lower surface of the counterweight-side shock absorber base.
A method of renewing the hydraulic elevator of claim 4 into a rope elevator. In addition to the counterweight guide rail and the counterweight, the counterweight mechanism includes a counterweight rail bracket mounting metal supported by the jack column and a counterweight rail supported by the counterweight rail bracket mounting metal. Brackets and
When the outer lines of the pair of jack columns are defined lines, the balance weight rail bracket mounting metal, the balance weight rail bracket, the balance weight guide rail, and the balance weight are the pair of defined lines. Arranged so as not to protrude outward from the
A method for renewing a hydraulic elevator according to any one of claims 1 to 5 into a rope elevator.

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