JP6452544B2 - Repair method of directly connected hydraulic elevator and non-hydraulic elevator - Google Patents

Description

  The present invention relates to a modification method for a direct-coupled hydraulic elevator that modifies a direct-coupled hydraulic elevator to a non-hydraulic elevator and a non-hydraulic elevator that is modified from the direct-coupled hydraulic elevator.

  2. Description of the Related Art Conventionally, a directly-coupled hydraulic elevator repair method for repairing a direct-coupled hydraulic elevator to a rope-type elevator, a cylinder removing process for removing a cylinder from an underground pipe provided below a hoistway, and a cylinder removing process After the balance weight placement process of inserting the balance weight into the underground pipe, one end of the rope is connected to the upper part of the cage, the middle part of the rope is passed through the side of the cage, and the lower end of the rope is connected to the balance weight A method of repairing a directly-coupled hydraulic elevator including a rope connecting step is known (see, for example, Patent Document 1).

JP 2010-105805 A

  However, since the rope passes by the side of the car, there is a problem that the size of the gap between the car and the hoistway must be increased, and the size of the car must be reduced.

  The present invention provides a method for repairing a directly-coupled hydraulic elevator and a non-hydraulic elevator that can modify a directly-coupled hydraulic elevator to a non-hydraulic elevator without reducing the size of the car.

A method for repairing a direct-coupled hydraulic elevator according to the present invention is a modification method for a direct-coupled hydraulic elevator in which a direct-coupled hydraulic elevator is modified to a non-hydraulic elevator. After the cylinder removing step to be removed and the cylinder removing step, after connecting the upper end of the screw rod to the cage and inserting the lower end of the screw rod into the underground pipe, and after the cylinder removing step, A guide device installation step in which a guide device for guiding the screw rod in the vertical direction is installed in the underground pipe, and a drive device installation step in which a drive device for moving the screw rod in the vertical direction with respect to the underground pipe is installed in the hoistway; It has.

  According to the method for repairing a direct-coupled hydraulic elevator according to the present invention, a car is moved by moving a screw rod having an upper end connected to a car and a lower end inserted into the underground pipe in the vertical direction with respect to the underground pipe. Since it can be moved up and down, the directly connected hydraulic elevator can be modified to a non-hydraulic elevator without reducing the size of the car.

It is a side view which shows the screw type elevator which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the underground pipe and screw rod of FIG. It is a front view which shows the drive device of FIG. It is a side view showing a direct connection type hydraulic elevator.

Embodiment 1 FIG.
1 is a side view showing a screw-type elevator according to Embodiment 1 of the present invention. A screw type elevator which is a non-hydraulic elevator includes an underground pipe 1 provided below the hoistway 100 and extending in the vertical direction, and a lower end portion inserted into the underground pipe 1 in the vertical direction with respect to the underground pipe 1. A movable screw rod 2, a car 3 connected to the upper end of the screw rod 2, and a drive device that is provided in a pit 101 of the hoistway 100 and moves the screw rod 2 in the vertical direction with respect to the underground pipe 1. 4 and a shock absorber 5 provided in the pit 101.

  The underground pipe 1 is fixed with respect to the hoistway 100. The underground pipe 1 is formed in a bottomed cylindrical shape. The bottom surface of the underground pipe 1 is formed with a concave portion 11 that goes downward from the radially outer side toward the radially inner side.

  The screw rod 2 is formed in a cylindrical shape. A screw groove is formed on the outer peripheral surface of the screw rod 2. The upper end of the screw rod 2 is connected to the car 3. The screw rod 2 can be divided into a plurality of screw rod pieces. When the screw rod 2 is carried into the hoistway 100, the screw rod 2 is divided into a plurality of screw rod pieces.

  The car 3 is raised and lowered by being guided by a pair of car guide rails (not shown) standing on the hoistway 100. The car 3 moves up and down the hoistway 100 while being guided by the car guide rail.

  FIG. 2 is a cross-sectional view showing the underground pipe 1 and the screw rod 2 of FIG. The screw-type elevator further includes a plurality of guide devices 6 that are provided in the underground pipe 1 and guide the screw rod 2 in the vertical direction. Each guide device 6 is formed in an O shape. The guide device 6 is fixed to the inner peripheral surface of the underground pipe 1. The guide device 6 is disposed in the underground pipe 1 so that the axis of the guide device 6 overlaps the axis of the screw rod 2.

  The screw rod 2 is arranged so that the axis of the screw rod 2 overlaps the axis of the underground pipe 1 when the lower end of the screw rod 2 hits the recess 11.

  As shown in FIG. 1, the driving device 4 includes a female screw sprocket 41 formed in a disk shape, a thin hoisting machine 42 that generates power for rotating the female screw sprocket 41, a female screw sprocket 41, and a thin hoisting machine. A chain 43 that is provided over the machine 42 and transmits the power of the thin hoisting machine 42 to the female screw sprocket 41 and a machine base 44 that supports the thin hoisting machine 42 are provided. The female screw sprocket 41, the thin hoisting machine 42, and the chain 43 are covered from above by a safety cover (not shown). A control panel for controlling the driving of the thin hoisting machine 42 is installed in the hoistway 100 or the machine room (not shown).

  A through hole into which the screw rod 2 is inserted is formed at the center of the female screw sprocket 41. On the inner peripheral surface of the through hole of the screw rod 2, a female screw that engages with the screw groove of the screw rod 2 is formed. Accordingly, when the female thread sprocket 41 rotates, the screw rod 2 moves in the vertical direction with respect to the female thread sprocket 41. As the screw rod 2 moves in the vertical direction with respect to the female screw sprocket 41, the screw rod 2 moves in the vertical direction with respect to the underground pipe 1. When the female thread sprocket 41 rotates, the threaded rod 2 does not rotate because the threaded rod 2 is fixed to the car 3.

  The thin hoisting machine 42 has a sprocket that engages with the chain 43. The chain 43 is hung across the outer peripheral surface of the female screw sprocket 41 and the outer peripheral surface of the sprocket of the thin hoisting machine 42. Therefore, when the thin hoisting machine 42 is driven, the sprocket of the thin hoisting machine 42 is rotated, and the female screw sprocket 41 is rotated.

  FIG. 3 is a front view showing the driving device 4 of FIG. The drive device 4 further includes a support portion 45 that supports the thin hoisting machine 42 and a cover portion 46 that covers the female screw sprocket 41 from above. The support part 45 supports the female thread sprocket 41 so that the female thread sprocket 41 can rotate. The female screw sprocket 41 is restricted from moving upward by the cover 46.

  FIG. 4 is a side view showing a direct-coupled hydraulic elevator. The direct connection type hydraulic elevator includes a underground pipe 1 provided below the hoistway 100 and extending in the vertical direction, a cylinder (not shown) inserted into the underground pipe 1, and a lower end portion inserted into the cylinder. A piston 7 that is movable in the vertical direction and a car 3 connected to the upper end of the piston 7 are provided. When oil is sent from an oil tank (not shown) to the cylinder, the piston 7 is raised relative to the cylinder, and when oil is sent from the cylinder to the oil tank, the piston 7 is lowered relative to the cylinder. The car 3 moves up and down the hoistway 100 in conjunction with the raising and lowering of the cylinder with respect to the piston 7.

  Next, a method for repairing a directly connected hydraulic elevator to a screwed elevator (a method for repairing a directly connected hydraulic elevator) will be described. In this example, a case where the existing car 3 and the existing car guide rail are used will be described. First, a cylinder is removed from the underground pipe 1 (cylinder removal process). In the cylinder removing step, the piston 7 inserted into the cylinder is also removed.

  After the cylinder removing step, the upper end portion of the screw rod 2 is connected to the car 3 and the lower end portion of the screw rod 2 is inserted into the underground pipe 1 (screw rod attaching step). In the threaded rod mounting step, a plurality of threaded rod pieces constituting the threaded rod 2 are carried into the hoistway 100 in a divided state, and the threaded rod pieces are connected to the ground while connecting the divided threaded rod pieces in the longitudinal direction. Insert into tube 1.

  After the cylinder removal step, the guide device 6 is installed on the underground pipe 1 (guide device installation step). Then, the drive device 4 is installed in the hoistway 100 (drive device installation process). This completes the method for repairing the directly connected hydraulic elevator.

  As described above, according to the modification method of the direct-coupled hydraulic elevator according to the first embodiment of the present invention, the cylinder removing step of removing the cylinder from the underground pipe 1 provided below the hoistway 100, After the cylinder removing process, the screw rod 2 is connected to the cage 3 and the lower end of the screw rod 2 is inserted into the underground pipe 1, and the screw rod 2 is connected to the underground pipe 1. And a drive device installation step of installing the drive device 4 that moves in the vertical direction in the hoistway 100, so that the screw rod 2 having the upper end connected to the car 3 and the lower end inserted into the underground pipe 1 is provided. The car 3 can be raised and lowered by raising and lowering. As a result, the directly connected hydraulic elevator can be modified to a non-hydraulic elevator without reducing the size of the car 3.

  In addition, since the method for repairing the direct-coupled hydraulic elevator includes a guide device installation step in which the guide device 6 that guides the screw rod 2 in the vertical direction is installed in the underground pipe 1 after the cylinder removing step. When the rod 2 moves in the vertical direction, the occurrence of shaft blurring of the screw rod 2 can be suppressed.

  Further, in the screw rod mounting step, the screw rod pieces constituting the screw rod 2 are carried into the hoistway in a divided state, and the screw rod pieces are grounded while being connected in the longitudinal direction. Since it inserts in the intermediate tube 1, the screw rod 2 can be easily carried into the hoistway 100. As a result, work efficiency can be improved in the repair of a direct-coupled hydraulic elevator.

  Moreover, according to the non-hydraulic elevator according to Embodiment 1 of the present invention, the lower end is inserted into the underground pipe 1 provided below the hoistway 100 and extending in the vertical direction, and the car 3 is connected to the upper end. The size of the car 3 is provided with the screw rod 2 that can move in the vertical direction with respect to the underground pipe 1 and the drive device 4 that moves the screw rod 2 in the vertical direction with respect to the underground pipe 1. The direct-coupled hydraulic elevator can be modified to a non-hydraulic elevator without reducing the size.

  In the first embodiment, the method for repairing the direct-coupled hydraulic elevator in which the driving device 4 is disposed in the pit 101 has been described. However, the driving device 4 may be disposed in the car 3.

  In the first embodiment, the configuration of the driving device 4 having the thin hoisting machine 42 has been described. However, the driving device 4 having a hoisting machine that is not thin may be used.

  In the first embodiment, the configuration of the driving device 4 having the chain 43 has been described. However, a belt that transmits the power of the thin hoisting machine 42 to the female screw sprocket 41 may be used.

  In the first embodiment, the method for repairing the directly connected hydraulic elevator using the existing car 3 and the existing car guide rail has been described. However, the existing car 3 and the existing car guide rail are carried out from the hoistway 100. Then, the new car 3 and the new car guide rail may be carried into the hoistway 100.

  DESCRIPTION OF SYMBOLS 1 Underground pipe, 2 Screw rod, 3 Car, 4 Drive apparatus, 5 Shock absorber, 6 Guide apparatus, 7 Piston, 11 Recessed part, 41 Female thread sprocket, 42 Thin hoisting machine, 43 Chain, 44 Machine stand, 45 Support part , 46 Cover, 100 hoistway, 101 pits.

Claims (5)

A method for repairing a direct-coupled hydraulic elevator that modifies a direct-coupled hydraulic elevator to a non-hydraulic elevator,
A cylinder removing step of removing the cylinder from the underground pipe provided below the hoistway;
After the cylinder removing step, connecting the upper end of the screw rod to the cage, and inserting the lower end of the screw rod into the underground pipe,
After the cylinder removing step, a guide device installation step for installing a guide device for guiding the screw rod in the vertical direction on the underground pipe;
And a drive device installation step of installing in the hoistway a drive device for moving the screw rod in the vertical direction with respect to the underground pipe. In the threaded rod mounting step, the threaded rod pieces are carried into the hoistway in a state where a plurality of threaded rod pieces constituting the threaded rod are divided, and the divided threaded rod pieces are connected in the longitudinal direction. The method for refurbishing a direct-coupled hydraulic elevator according to claim 1 , wherein: is inserted into the underground pipe. The drive device is provided on the screw rod and covers the female screw sprocket that moves the screw rod in the vertical direction by rotating, the female screw sprocket from above, and a cover that restricts the female screw sprocket from moving upward. A method for repairing a direct-coupled hydraulic elevator according to claim 1 or claim 2 having a portion. A screw rod which is provided below the hoistway and is inserted into the underground pipe extending in the vertical direction, a lower end is inserted, and a car is connected to the upper end, and is movable in the vertical direction with respect to the underground pipe,
A driving device for moving the screw rod up and down with respect to the underground pipe ;
A non-hydraulic elevator provided with a guide device provided in the underground pipe and guiding the screw rod in a vertical direction . The drive device is provided on the screw rod and covers the female screw sprocket that moves the screw rod in the vertical direction by rotating, the female screw sprocket from above, and a cover that restricts the female screw sprocket from moving upward. The non-hydraulic elevator according to claim 4 having a portion.

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