JP6211216B2 - Elevator, elevator lifting lever coupling device, and elevator repair method - Google Patents

Description

  The present invention relates to an elevator in which an emergency stop device is mounted on a car, a lift lever connecting device that connects a pull-up lever that operates the emergency stop device and a governor rope, and an existing emergency stop device. The present invention relates to an elevator repair method for replacing an existing speed governor with a new speed governor.

  In a conventional elevator safety device, a horizontal lever shaft is provided at the bottom of the car. A pull-up lever for operating the safety device is attached to the lever shaft so as to be rotatable about the lever shaft. The pull-up lever is connected to the governor rope via the pull-up mechanism. The pulling mechanism portion has a triangular lever rotatably attached to the lower portion of the car. The triangular lever is connected to the pulling lever through a rod-shaped connecting member. The length of the connecting member is set according to the mounting position of the lifting mechanism portion with respect to the car floor. Thereby, the attachment position with respect to the car floor of a raising mechanism part can be adjusted to the depth direction of a car (for example, refer patent document 1).

  Moreover, in the conventional elevator repair method, the existing governor and governor rope are removed, and a new governor and governor rope are installed in the hoistway. And a displacement apparatus is installed between the raising lever of the existing emergency stop apparatus, a new governor rope, and the raising lever of the existing emergency stop apparatus. The displacement device has a pin provided on the pull-up lever, and a pull-up bar connected between the pin and the governor rope (for example, see Patent Document 2).

JP 2010-89930 A JP 2012-20879 A

  For example, when an existing elevator is renovated to an elevator compatible with a door opening travel protection device (Unintended Car Movement Protection), it is necessary to replace the existing speed governor with a new speed governor. At this time, it is necessary to change the position of the governor rope because the new governor is larger than the existing governor. Accordingly, it is necessary to shift the connection position between the pull-up bar and the pull-up lever in a direction parallel to the rotation axis of the pull-up lever.

  On the other hand, in the conventional elevator safety device disclosed in Patent Document 1, the connection position between the pull-up bar and the pull-up lever is parallel to the rotation axis of the pull-up lever while diverting the existing emergency stop device. It was difficult to shift in a different direction.

  Moreover, in the conventional elevator repair method disclosed in Patent Document 2, it is necessary to perform additional processing on the pull-up lever in order to attach the pin. Furthermore, if the axial dimension of the pin is increased in order to shift the connection position between the pull-up bar and the pull-up lever in a direction parallel to the rotation axis of the pull-up lever, the moment applied to the pin increases and the pin breaks. There is a risk of coming off.

  The present invention has been made to solve the above-described problems, and can easily move the position of the operating point of the lifting lever while diverting the existing emergency stop device without performing additional processing. It is an object of the present invention to obtain an elevator, an elevator lifting lever connecting device, and an elevator refurbishing method.

An elevator according to the present invention is mounted on a car, a car guide rail that guides the raising and lowering of the car, and a lift lever, a lift lever shaft that is a rotation shaft of the lift lever, and a lift lever shaft And an emergency stop device for holding the car guide rail and stopping the car in an emergency, and a speed governor that circulates as the car moves up and down It has a speed governor sheave around which a rope and a speed governor rope are wound, and has a speed governor that detects an excessive speed of the car and activates an emergency stop device. It is connected to the lifting lever via the lever connecting device, and the lifting lever connecting device is lifted between the outer member and the outer member disposed on the surface opposite to the cage of the lifting lever. Pull the outer member up by inserting the lever. A fixing tool fixed to the bar, and a pull-up bar connected to the governor rope, and the first connecting pin is inserted into a pin hole provided in the outer member; A second connection pin parallel to the first connection pin is provided on the surface of the outer member opposite to the pull-up lever, and the pull-up bar is connected to the second connection pin.
Further, the elevator lifting lever connecting device according to the present invention connects the governor rope to the lifting lever for operating the emergency stop device, and the cage of the lifting lever is disposed on the opposite surface. An outer member, and a fixing member for fixing the outer member to the pulling lever by sandwiching the pulling lever between the outer member and a pulling rod connected to the governor rope. Is provided with a pin hole into which the first connecting pin provided on the pull-up lever is inserted, and the pull-up bar is connected to the surface of the outer member opposite to the pull-up lever. A second connecting pin is provided.
Furthermore, the elevator repair method according to the present invention includes a step of removing an existing lifting rod, a step of removing an existing speed governor, a step of installing a new speed governor, and an existing safety device for operating an existing emergency stop device. The pull-up lever is fixed between the outer member and the fixture, thereby fixing the outer member to the pull-up lever, and the pin hole provided in the outer member is provided with the second A step of inserting one connecting pin, and a step of connecting a new pulling rod to the governor rope and connecting the new pulling rod to a second connecting pin provided on the outer member.

  According to the elevator, the elevator lifting lever coupling device, and the elevator repair method of the present invention, the working point position of the lifting lever can be easily moved while diverting the existing emergency stop device without performing additional processing. be able to.

1 is a schematic plan view showing a state before repair of an elevator according to Embodiment 1 of the present invention. It is a schematic side view which shows the elevator of FIG. It is a schematic plan view which shows the state after repair of the elevator of FIG. It is a schematic side view which shows the elevator of FIG. It is a front view which shows the connection mechanism to the emergency stop apparatus of the governor rope of FIG. It is a side view which decomposes | disassembles and shows the raising lever coupling device of FIG. It is a disassembled perspective view which shows the connection part to the raising lever of the raising lever coupling device of FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a schematic plan view showing a state before repair of an elevator according to Embodiment 1 of the present invention, and FIG. 2 is a schematic side view showing the elevator of FIG. 1. In this example, a machine room-less elevator is shown. Yes.

  In the figure, a car 1 and a counterweight (not shown) are suspended in a hoistway 2 by a suspension body (not shown). As the suspension body, a plurality of ropes or a plurality of belts are used. The suspension is wound around a drive sheave of a hoisting machine (not shown) installed in the hoistway 2.

  The car 1 and the counterweight move up and down in the hoistway 2 by the driving force of the hoisting machine. In the hoistway 2, a pair of car guide rails 3 (not shown in FIG. 2) for guiding the raising and lowering of the car 1 and a pair of counterweight guide rails (not shown) for guiding the raising and lowering of the counterweight. Each is installed vertically.

  The car 1 has a car room 4, a car floor 5 provided at the lower part of the car room 4, and an emergency stop beam 6 fixed to the lower part of the car floor 5. The emergency stop beam 6 is arranged in parallel to the width direction of the car 1 (vertical direction in FIG. 1). An emergency stop device 7 that holds the car guide rail 3 and stops the car 1 in an emergency manner is mounted on the lower part of the car 1. The emergency stop device 7 is held by the emergency stop beam 6.

  The emergency stop device 7 includes a pair of squeeze gold (emergency stop block) 7 a provided on the emergency stop beam 6, a pair of lifting levers 8, and a lifting lever shaft that connects these lifting levers 8. 9, a pair of first connecting pins 10 (not shown in FIG. 1) provided at the middle portion in the longitudinal direction of the pull-up lever 8, and a tip portion (second end portion in the longitudinal direction) ) Have a pair of rollers 11 (not shown in FIG. 1).

  The squeeze gold 7a and the pull-up lever 8 are arranged at both ends in the longitudinal direction of the emergency stop beam 6, respectively. The pull-up lever shaft 9 is rotatably supported by the emergency stop beam 6. Further, the pull-up lever shaft 9 is disposed parallel to the width direction of the car 1 and horizontally. The first connecting pin 10 protrudes outward in the width direction of the car 1 in parallel with the pull-up lever shaft 9.

  Further, the lifting lever shaft 9 is fixed to the base end portion (first end portion in the longitudinal direction) of the lifting lever 8. As a result, the left and right lifting levers 8 rotate integrally with the lifting lever shaft 9 about the lifting lever shaft 9. That is, the lifting lever shaft 9 is a rotation shaft of the lifting lever 8.

  Each lifting lever 8 is rotatable between an operation position where the car guide rail 3 is pushed via the roller 11 and a release position where the roller 11 is separated from the car guide rail 3. The emergency stop device 7 is operated by rotating the pull-up lever 8 counterclockwise in FIG.

  A speed governor 12 is installed at the top of the hoistway 2. The speed governor 12 detects the excessive speed of the car 1 and activates the emergency stop device 7. The governor 12 is disposed on one side in the width direction of the car 1 as viewed from directly above. Further, the governor 12 includes a governor sheave 13, an overspeed detection switch (not shown), a rope catch (not shown), and the like.

  A governor rope 14 is wound around the governor sheave 13. The governor rope 14 is stretched endlessly in the hoistway 2. A lower end portion of the governor rope 14 is wound around a tension wheel 15 disposed at a lower portion in the hoistway 2. Tension is applied to the governor rope 14 by a tension wheel 15.

  The governor rope 14 is connected to the lifting lever 8 via a lifting bar 16. The upper end of the pull-up bar 16 is connected to the governor rope 14. A lower end portion of the pull-up bar 16 is rotatably connected to the first connecting pin 10. As a result, the governor rope 14 circulates as the car 1 moves up and down, and the governor sheave 13 rotates at a speed corresponding to the traveling speed of the car 1.

  When the speed governor 12 detects the abnormal speed of the car 1, the speed governor 12 grasps the speed governor rope 14, pulls up the pull-up lever 8 connected to the speed governor rope 14, and operates the emergency stop device 7.

  3 is a schematic plan view showing the state of the elevator shown in FIG. 1 after refurbishment, and FIG. 4 is a schematic side view showing the elevator shown in FIG. In the elevator after the repair, the existing speed governor 12 is replaced with a new speed governor (a speed governor compatible with the door-open travel protection device) 21. The new governor 21 is installed at the top of the hoistway 2. The governor 21 is disposed on one side in the width direction of the car 1 as viewed from directly above. However, the installation position of the new speed governor 21 is shifted from the installation position of the existing speed governor 12.

  The governor 21 detects the excessive speed of the car 1 and operates the emergency stop device 7. The existing emergency stop device 7 is used without any additional processing such as drilling. Further, the governor 21 includes a governor sheave 22, an excessive speed detection switch (not shown), a rope catch (not shown), and the like.

  A new governor rope 23 is wound around the governor sheave 22. The governor rope 23 is stretched endlessly in the hoistway 2. The lower end portion of the governor rope 23 is wound around a new tension wheel 24 arranged at the lower part in the hoistway 2. Tension is applied to the governor rope 23 by a tension wheel 24.

  The governor rope 23 is connected to one pull-up lever 8 via a pull-up lever connecting device 25 (not shown in FIG. 3) which is a connecting device added at the time of repair. As a result, the governor rope 23 circulates as the car 1 moves up and down, and the governor sheave 22 rotates at a speed corresponding to the traveling speed of the car 1.

  When the speed governor 21 detects the abnormal speed of the car 1, the speed governor 21 grasps the speed governor rope 23, raises the pull-up lever 8 connected to the speed governor rope 23, and operates the emergency stop device 7.

  5 is a front view showing a mechanism for connecting the speed governor rope 23 of FIG. 4 to the safety device 7, FIG. 6 is an exploded side view of the pull-up lever connector 25 of FIG. 5, and FIG. It is a disassembled perspective view which shows the connection part to the raising lever 8 of the raising lever coupling device 25 of this.

  The pull-up lever coupling device 25 sandwiches the pull-up lever 8 between the outer plate 26 and the outer plate 26 as an outer member disposed on the surface of the pull-up lever 8 opposite to the car 1. Thus, a fixing tool 27 for fixing the outer plate 26 to the pull-up lever 8 and a new pull-up bar 28 connected to the governor rope 23 are provided.

  The fixing device 27 includes an inner plate 29 as an inner member facing the outer plate 26 with the pulling lever 8 interposed therebetween, and a plurality of fasteners 30 that fasten the outer plate 26 to the inner plate 29. ing. As the outer plate 26 and the inner plate 29, rectangular flat plates having a thickness equivalent to that of the lifting lever 8 are used. As each fastener 30, a bolt that penetrates the outer plate 26 and is tightened into a screw hole of the inner plate 29 is used.

  The dimensions of the outer plate 26 and the inner plate 29 in the direction perpendicular to the longitudinal direction and the thickness direction of the pull-up lever 8 are larger than the dimensions of the pull-up lever 8 in the same direction. The fasteners 30 are disposed at the four corners of the outer plate 26. As a result, the outer plate 26 is fixed to the lifting lever 8 without any additional processing of the lifting lever 8.

  A pin hole 31 is provided in the outer plate 26. The first connecting pin 10 is inserted into the pin hole 31 (gap fit). Thus, the outer plate 26 is positioned with respect to the pull-up lever 8. A second connection pin 32 parallel to the first connection pin 10 is provided on the surface of the outer plate 26 opposite to the pull-up lever 8. The pull-up bar 28 is rotatably connected to the second connecting pin 32.

  The diameter of the second connecting pin 32 is larger than the diameter of the first connecting pin 10. The second connecting pin 32 is disposed on the same axis as the first connecting pin 10. The pin hole 31 is extended to the inside of the second connecting pin 32. Thereby, the first connecting pin 10 is inserted to the inside of the second connecting pin 32.

  A stopper portion (pedestal portion) 33 that is applied to the lower surface of the lifting lever 8 is fixed to the outer plate 26. The stopper portion 33 is in surface contact with the lower surface of the lifting lever 8. A spacer 34 is interposed between the upper end portion of the outer plate 26 and the upper end portion of the inner plate 29. The spacer 34 is in surface contact with the upper surface of the lifting lever 8.

  Next, a method for modifying the elevator shown in FIGS. 1 and 2 to the elevator shown in FIGS. 3 and 4 will be described. In the renovation work, first, the existing speed governor 12, the existing speed governor rope 14, the existing tension wheel 15, and the existing pulling rod 16 are removed. Then, a new governor 21, a new governor rope 23, and a new tension wheel 24 are installed in the hoistway 2.

  Subsequently, the pulling lever 8 and the spacer 34 are sandwiched between the outer plate 26 and the inner plate 29, and the fastener 30 is tightened to fix the outer plate 26 to the pulling lever 8. At this time, the first connecting pin 10 is inserted into the pin hole 31 and the stopper portion 33 is brought into contact with the lower surface of the pull-up lever 8.

  Thereafter, the new pulling rod 28 is connected to the governor rope 23 and the new pulling rod 28 is connected to the second connecting pin 32.

  According to such an elevator, the lifting lever connecting device 25, and the repair method, the working point position of the lifting lever 8 can be easily moved while diverting the existing emergency stop device 7 without performing additional processing. Can do. As a result, it is possible to change the position of the speed governor on the plane after diverting the existing emergency stop device 7 of the elevator, so that the repair period can be shortened and the repair cost can be reduced.

  Further, by inserting the first connecting pin 10 into the pin hole 31, the outer plate 26 and the second connecting pin 32 can be easily positioned, and the displacement of the outer plate 26 can be prevented. .

Furthermore, the outer plate 26 is fastened to the pull-up lever 8 by fastening the outer plate 26 to the inner plate 29 using the fasteners 30, so that the outer plate 26 is attached to the pull-up lever 8 with a simple structure. Can be fixed firmly.
Furthermore, since the stopper portion 33 is in contact with the lower surface of the lifting lever 8, the force for lifting the lifting lever 8 can be transmitted to the lifting lever 8 more reliably. In addition, it is possible to prevent stress from concentrating on the first connecting pin 10 and prevent damage to the first connecting pin 10.

Further, since the diameter of the second connecting pin 32 is made larger than the diameter of the first connecting pin 10, the force from the pull-up bar 28 can be more reliably transmitted to the outer plate 26.
Furthermore, since the second connecting pin 32 is arranged on the same axis as the first connecting pin 10, the position of the operating point of the lifting lever 8 can be easily shifted in the axial direction of the first connecting pin 10. .
Furthermore, since the pin hole 31 extends to the inside of the second connection pin 32, even if the first connection pin 10 is long, the first connection pin 10 is connected to the second connection pin 32. The pull-up lever 8 can be firmly sandwiched between the outer plate 26 and the fixture 27 by being inserted to the inside.

In addition, the shape of the outer side board 26 and the inner side board 29 is not limited to a rectangle.
Further, the outer member and the inner member may not be flat members, and may be block members, for example.
Furthermore, the inner member may be divided into a plurality of parts. For example, four clips may be fastened to the outer member with a fastener, and the pull-up lever 8 may be sandwiched at four locations.

Furthermore, the second connecting pin does not necessarily have to be arranged on the same axis as the first connecting pin.
In addition, as long as sufficient strength can be ensured, the diameter of the second connecting pin does not necessarily have to be larger than the diameter of the first connecting pin. When the diameter of the second connecting pin is the same as the diameter of the first connecting pin, it is possible to divert the existing pull-up bar.

Furthermore, you may provide a stopper part in an inner side member.
Furthermore, the stopper portion may be formed integrally with the outer member or the inner member, or may be fixed as a separate part to the outer member or the inner member.
Further, for example, by applying two or more fasteners to the lower surface of the lifting lever, these fasteners may be used as a stopper portion.
Further, the spacer may be formed integrally with the outer member or the inner member, or may be omitted.

Furthermore, an existing governor rope may be used in the repair method.
Further, the type of the emergency stop device 7 is not limited to the above example.
Furthermore, the type and layout of the entire elevator are not limited to FIGS.

Claims (13)

Basket,
A car guide rail for guiding the raising and lowering of the car,
A lifting lever mounted on the car, a lifting lever shaft that is a rotation axis of the lifting lever, and a first connection provided on the lifting lever in parallel with the lifting lever shaft An emergency stop device for holding the car guide rail and emergency stopping the car
A speed governor rope that circulates as the car ascends and descends, and a speed governor sheave around which the speed governor rope is wound, detects an excessive speed of the car, Equipped with a governor to operate,
The governor rope is connected to the pull-up lever via a pull-up lever connecting device,
The lifting lever connecting device is
An outer member arranged on the opposite side of the car of the lifting lever;
A fixture that fixes the outer member to the lifting lever by sandwiching the lifting lever with the outer member;
A pull-up bar connected to the governor rope;
The first connecting pin is inserted into a pin hole provided in the outer member,
A second connection pin parallel to the first connection pin is provided on the surface of the outer member opposite to the pull-up lever,
The elevator bar is connected to the second connecting pin. The fixture is
An inner member facing the outer member across the pull-up lever;
The elevator according to claim 1, further comprising: a fastener that fastens the outer member to the inner member.   3. The elevator according to claim 1, wherein the lifting lever coupling device is fixed to the outer member and further includes a stopper portion that is brought into contact with a lower surface of the lifting lever.   The elevator according to any one of claims 1 to 3, wherein a diameter of the second connecting pin is larger than a diameter of the first connecting pin.   The elevator according to claim 4, wherein the second connecting pin is disposed on the same axis as the first connecting pin.   The elevator according to claim 5, wherein the pin hole is extended to the inside of the second connecting pin. A lift lever connecting device for an elevator for connecting a governor rope to a lift lever for operating an emergency stop device,
An outer member disposed on an opposite surface of the lifting lever cage;
A fixture for fixing the outer member to the lifting lever by sandwiching the lifting lever with the outer member;
A pulling rod connected to the governor rope,
The outer member is provided with a pin hole into which a first connecting pin provided on the pull-up lever is inserted,
A lifting lever coupling device for an elevator, wherein a second coupling pin to which the lifting rod is coupled is provided on a surface of the outer member opposite to the lifting lever. The fixture is
An inner member facing the outer member across the pull-up lever;
The elevator pull-up lever coupling device according to claim 7, further comprising: a fastener that fastens the outer member to the inner member.   The elevator lifting lever coupling device according to claim 7 or 8, further comprising a stopper portion that is fixed to the outer member and is brought into contact with a lower surface of the lifting lever.   The elevator pull-up lever coupling device according to any one of claims 7 to 9, wherein a diameter of the second coupling pin is larger than a diameter of the first coupling pin.   The elevator pull-up lever coupling device according to claim 10, wherein the pin hole extends to the inside of the second coupling pin. The process of removing the existing lifting rod,
The process of removing the existing governor and installing a new governor,
A pin provided on the outer member as well as fixing the outer member to the lifting lever by sandwiching an existing lifting lever that operates the existing emergency stop device between the outer member and the fixture. A step of inserting a first connecting pin provided on the pull-up lever into the hole, and a connection of a new pull-up rod to the governor rope, and provision of the new pull-up rod on the outer member A method for repairing an elevator, comprising a step of connecting to a second connecting pin.   The elevator repair method according to claim 12, wherein when the outer member is fixed to the pull-up lever, a stopper portion fixed to the outer member is applied to the lower surface of the pull-up lever.

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