JP2006273456A - Elevator car fixing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator car fixing device, in which a car can be fixed in maintenance and inspection without adding an excessive load to a support part, and fixing work can be easily performed. <P>SOLUTION: This device is provided with a car vertically movable in a shaft for an elevator, an engagement member 38 provided on either of the car and a fixed member 2 on the shaft, and a fixing member 20 provided on either of the car and the fixed member 2 to be engaged with the engagement member 38 for fixing the car in the shaft. The fixing member comprises an upper lock member 33 provided to be vertically position-adjustable to be engaged with the engagement member from the upper side when the car is fixed, and lower lock members 31 and 32 provided to be vertically position-adjustable to be engaged with the engagement member from the underside when the car is fixed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a car fixing device for fixing an elevator car in a hoistway during maintenance and inspection work of an elevator, particularly a machine room-less elevator.

  In a machine room-less elevator in which a machine room is not installed above the elevator hoistway, elevator devices that have been installed in a conventional machine room such as an elevator hoist or an elevator control panel are usually arranged in the hoistway. . For this reason, the elevator maintenance personnel need to get on the upper surface of the car that goes up and down in the hoistway and perform maintenance and inspection of the elevator equipment arranged in the hoistway, and in order to ensure the safety of such maintenance personnel, A car fixing device for fixing the car in the hoistway is provided in the car and the hoistway fixing body.

  Further, as a prior art of such a car fixing device, there is an operation mechanism provided on the upper part of the car and a fixing mechanism provided on a guide rail for the car, and a longitudinal end portion of a lock rod provided in the operation mechanism Has been proposed in which a car is securely fixed to a car guide rail by inserting it into a lock rod insertion hole of a fixing mechanism (see, for example, Patent Document 1).

JP 2000-203774 A

  In the elevator car fixing device described in Patent Document 1, when fixing the car, the lock bar attached to the car is moved in the longitudinal direction and inserted into the lock bar insertion hole of the fixing mechanism fixed to the guide rail for the car. For this reason, there is a problem that workability is poor because the car must be stopped by accurately matching the height of the lock rod and the lock rod insertion hole. Further, in the above structure, the lock rod may be inserted into the lock rod insertion hole just before the stop of the car in a rush of fixing work, and the cage may move by inertia after the lock rod is inserted. In such a case, an excessive load and impact are applied to the engaging portion between the lock rod and the lock rod insertion hole, and the cage frame supporting the lock rod is distorted or the cage guide supporting the fixing mechanism. New work such as repair and adjustment has been forced due to the deterioration of the support accuracy of the rail.

  The present invention has been made in order to solve the above-described problems. The object of the present invention is to prevent an excessive load from acting on the support portion when the car is fixed during maintenance and inspection. It is an object of the present invention to provide an elevator car fixing device that can easily perform the above.

  The elevator car fixing device according to the present invention includes a car ascending / descending in the elevator hoistway, an engagement element provided on one of the car and the fixed body of the hoistway, and one of the car and the fixed body. And a fixing tool that engages with the engaging element and fixes the car in the hoistway. The fixing tool is provided so that its position can be adjusted in the vertical direction, and engages with the engaging element from above when the car is fixed. It has an upper locking body and a lower locking body that is provided so that its position can be adjusted in the vertical direction and engages with the engagement element from below when the car is fixed.

  The present invention relates to a car ascending / descending in an elevator hoistway, an engaging element provided on one of the car and the fixed body of the hoistway, and an engaging element provided on either of the car and the fixing body. And a fixing tool for fixing the car in the hoistway. The fixing tool is provided so that the position of the car can be adjusted in the vertical direction. The position is adjustable in the direction and has a lower locking body that engages with the engagement element from below when the car is fixed, so that an excessive load is applied to the support part when the car is fixed during maintenance and inspection. And can be fixed easily.

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
1 is a plan view of an elevator apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a side view thereof. 1 and 2, the elevator hoistway 1 is provided with a pair of car guide rails 2 facing each other, one of which is at the center of the right hoistway wall 1a as viewed from the elevator hall 3, and the other. Are respectively erected in the central portion of the hoistway wall 1b facing the hoistway wall 1a and separated by a predetermined distance. The elevator car 4 that moves up and down in the hoistway 1 is restricted in its horizontal movement by the guide shoes 4a provided on the upper and lower parts on both sides engaging with the guide rails 2 for the car. Has been guided. In this car 4, a car floor 4d is supported by a lower frame 4c of a car frame 4b having a substantially quadrangular ring shape, and a car room 4e on which an elevator user rides is formed on the car floor 4d. Further, a car suspension wheel 6 obliquely installed at both lower portions on both sides of the car 4 via a car suspension support frame 5, one on the rear side of the car guide rail 2 and the other on the car guide rail 2. Are provided on the landing 3 side, and are arranged so that the ropes formed on the outer peripheral surfaces are substantially straight on the vertical projection plane. Reference numeral 7 denotes a car shock absorber that is erected on the bottom surface of the hoistway 1, which is directly below the car 4, and relieves the shock when the car 4 collides with the bottom surface of the hoistway 1.

  A counterweight 8 that moves up and down in the hoistway 1 in the opposite direction to the car 4 is disposed in a gap formed between the car 4 and the hoistway wall 1b on the vertical projection plane. On the counterweight 3 side and the hoistway 1 back side of the counterweight 8, a pair of counterweight guide rails 9 are provided so as to face each other with the counterweight 8 interposed therebetween. The counterweight 8 is guided in the ascending / descending direction by restricting the horizontal movement of the counterweight by engaging guide shoes (not shown) provided on the upper and lower parts on both sides with the counterweight guide rail 9. Has been. Further, the counterweight suspension wheel 8a rotatably provided on the upper portion of the counterweight 8 is disposed so that the rotation axis is orthogonal to the hoistway wall 1b. Reference numeral 10 denotes a counterweight buffer that is erected on the bottom surface of the hoistway 1, which is directly below the counterweight 8, and reduces the shock when the counterweight 8 collides with the bottom surface of the hoistway 1. It is.

  At the top of the hoistway 1 where the car 4 and the counterweight 8 are raised and lowered, support beams 11a and 11b arranged substantially in parallel with a predetermined interval extend between the hoistway walls 1a and 1b on both sides. Is provided. Between the support beam 11a on the landing 3 side and the support beam 11b on the back side, a cage-side rope-fastening beam 12 is provided on the hoistway wall 1a side, and each support beam 11a and on the hoistway wall 1b side are provided. The hoisting machine base 14 is supported via the hooks 13a and 13b provided in 11b. The hoisting machine base 14 is provided with a hoisting machine 15 composed of a motor 15a, a speed reducer 15b, and a driving sheave 15c immediately above the counterweight 8, and a rotating shaft of the driving sheave 15c. However, it arrange | positions so that it may be substantially orthogonal with respect to the hoistway wall 1b similarly to the counterweight suspension vehicle 8a.

  In addition, the hoisting machine base 14 is provided with a counterweight side rope stopper 16 adjacent to the hoistway 1 back side of the hoisting machine 15. The main rope 17 whose one end is elastically supported by the counterweight side rope stopper 16 is sequentially wound around the counterweight suspension wheel 8a, the driving sheave 15c, and the two car suspension wheels 6 from one end side. The other end is elastically supported by the car side rope stopper 18 provided on the car rope rope 12. That is, the car 4 and the counterweight 8 are suspended by the main rope 17 by a 2: 1 roping method, and the main rope 17 moves in conjunction with the rotation of the driving sheave 15 c of the hoisting machine 15. Thus, the interior of the hoistway 1 is moved up and down in opposite directions.

  Reference numeral 19 denotes a control panel that is provided on the hoistway wall 1c on the back side of the top of the hoistway 1 and controls the entire elevator apparatus such as raising and lowering the car 4 and opening and closing the door.

  Next, the structure of the car fixing device that fixes the car 4 in the hoistway 1 during elevator maintenance inspection will be described. 3 is a front view of the elevator car fixing device according to Embodiment 1 of the present invention, FIG. 4 is a side view thereof, FIG. 6 is a plan view thereof, and FIG. 5 is a view taken along line BB in FIG. 7 is a detailed view of the main part of the car fixing device. 1 to 7, the car fixing device that fixes and stops the car 4 at a predetermined position in the hoistway 1 during an elevator maintenance inspection or the like is an upper part of the car guide rail 2 that is a fixed body of the hoistway 1. The fixed body side fixing means 20 (fixing tool) provided on the upper side of the car 4 that moves up and down in the hoistway 1 is provided.

  The fixed body side fixing means 20 includes a support plate 23 fixed to the back surface of the car guide rail 2 disposed at the top of the hoistway 1 via a rail clip 22, and a lower end portion of the support plate 23 below the support plate 23. A car fixing lever 24 that is movably fixed and the upper part tilts toward the car 4 side, and an upper part of the support plate 23. When the car fixing lever 24 is not used, the upper part of the car fixing lever 24 is locked and rotated. A lever stopper for stopping the movement, and a lever support portion 26 provided with a detection switch 25 (second detection switch) for detecting the locked state of the car fixing lever 24 by the lever stopper are provided.

  In the car fixing lever 24, the lower end portion of the lever main body 27 is rotatably fixed to a support body 28 provided at one side lower portion of the support plate 23 via a support pin 29 having a cylindrical shape. The support pin 29 is configured to tilt toward the car 4 side by being disposed horizontally along the wall surface of the hoistway wall 1a. A mounting hole 27a for a screw rod 30 to be described later is formed in the upper portion of the lever main body 27. The mounting hole 27a has a screw hole portion 27b having a predetermined length at the upper portion thereof, and an idle hole portion 27c is formed below the screw hole portion 27b so as to be continuous with the screw hole portion 27b. The mounting hole 27a may be provided by forming the screw hole portion 27b and the play hole portion 27c in separate members and attaching the separate member to a predetermined position of the lever body 27.

  The screw rod 30, which has a lower end screwed into the screw hole portion 27 b and is erected above the lever main body 27, is screwed into the screw rod 30 from the lower end side in the axial direction of the screw rod 30. A lower side composed of a stopper nut 31 having a polygonal shape provided so as to be adjustable in position and a pair of spherical seats 32 in which a screw rod 30 passes through the hollow portion and is placed on the upper surface of the stopper nut 31. A locking body and an upper locking body, which is screwed into the threaded rod 30 and is provided so as to be adjustable in the axial direction of the threaded rod 30 and whose lower surface has a spherical shape, is disposed, and its upper end The head is provided with a screw head 34 having a polygonal shape.

  A detection switch 35 (first detection switch) is provided on the side surface of the lever main body 27 so that the detector 35a protrudes from the tilt side of the lever main body 27, that is, the car 4 side.

  Further, the lever support portion 26 is provided with a bracket 36 having an approximately L shape on one side upper portion of the support plate 23 so that one side surface thereof protrudes toward the car 4 side. The bracket 36 has a stopper bolt 37 for locking the tilt of the car fixing lever 24 on one side surface, and a detection switch 25 for detecting the locking state of the car fixing lever 24 by the stopper bolt 37 on the other side surface. Is provided. Here, the stopper bolt 37 is provided so that the screw portion 37a is screwed into a screw hole formed on one side surface of the bracket 36 so that the stopper bolt 37 can advance and retreat in the longitudinal direction. By moving to the side, the tip end portion 37 b enters the tilting path of the car fixing lever 24 to lock the car fixing lever 24. A tapered cam 37c is provided at an intermediate portion between the screw portion 37a and the tip portion 37b of the stopper bolt 37.

  On the other hand, the detection switch 25 fixed to the other side surface of the bracket 36 and provided above the stopper bolt 37 has a detector 25a protruding downward to the cam 37c when the stopper bolt 37 advances and retreats in its longitudinal direction. Arranged to engage. That is, by moving the stopper bolt 37 to the other side in the longitudinal direction until the locked state of the car fixing lever 24 is released, the detector 25a is guided by the inclined surface of the cam 37c and moved upward to detect the detection position. To reach. With this configuration, the locked state of the car fixing lever 24 can be detected by the detection switch 25.

  The car-side fixing means 21 is provided at the upper end of the vertical frame 4f of the car frame 4b so as to face the fixed body-side fixing means 20 provided at the top of the car guide rail 2, and when the car 4 is fixed. An engagement element 38 that engages with an engagement element 38 that engages with the car fixing lever 24 and a detection element 35a of a detection switch 35 that is provided on the lever body 27 when the car 4 is fixed. And are provided. Here, the engagement element 38 has a substantially rectangular parallelepiped shape, and an inclined surface 38a is formed on the lower surface of the engagement element 38. The inclined surface 38a is inclined upward toward the opposite fixed body side fixing means 20 side. Further, the engaging element 38 is formed with an engaging groove 38b having a predetermined width in the vertical direction on one side surface thereof facing the fixed body side fixing means 20, and the fixed body side fixing means 20 is formed by the engaging groove 38b. An engagement hole 38c that opens to the side is provided at a predetermined depth from the upper surface to the lower surface. The engaging hole 38c has a spherical upper edge.

  Next, a method for fixing the car 4 in the hoistway 1 using the car fixing device having the above-described configuration will be described. When the hoisting machine 15 and the control panel 19 are used to fix the car 4 in the hoistway 1 using the car fixing device during the maintenance inspection of the machine room-less elevator disposed at the top of the hoistway 1, the elevator maintenance staff First, the car 4 is stopped at a predetermined position such that the fixed body side fixing means 20 provided on the top of the car guide rail 2 and the car side fixing means 21 provided on the top of the car 4 are substantially at the same height. Let

  Then, the screw head of the stopper bolt 37 of the fixed body side fixing means 20 is rotated on the upper surface of the car 4 and moved to the other side in the longitudinal direction, and the locked state of the car fixing lever 24 is released. Here, when the stopper switch 37 is moved to the other side in the longitudinal direction and the detection switch 25 detects that the locked state of the car fixing lever 24 is released, the control panel 19 receives an input from the detection switch 25. Based on the received signal, the movement of the elevator is electrically stopped in order to prevent an electric shock accident of maintenance personnel during maintenance work. Next, the maintenance person on the car 4 tilts the car fixing lever 24 toward the front side, that is, the car 4 side, and the screw rod 30 is inserted into the engaging hole 38 c formed in the engaging element 38 of the car-side fixing means 21. Place. At this time, the spherical seat 32 is disposed below the engaging member 38 and the fixing nut 33 is disposed above the engaging member 38.

  Then, the worker holds the screw head 34 of the screw rod 30 from above the car 4 and rotates the screw rod 30 in the direction to remove from the lever body 27, thereby engaging the pair of spherical seats 32 with the engaging element 38 from below. Let Here, the inclined surface 38a on the lower surface of the engaging element 38 is formed to be substantially orthogonal to the screw rod 30 when the car 4 is stopped at a predetermined position and the car fixing lever 24 is tilted. That is, by moving the spherical seat 32 upward, the entire upper surface of the spherical seat 32 is brought into close contact with the lower surface of the engaging element 38.

  Next, the maintenance worker causes the fixing nut 33 to engage with the engaging element 38 from above by rotating the fixing nut 33 to one side from the top of the car 4 and moving it downward. At this time, the lower portion of the fixing nut 33 having a spherical shape is engaged with the upper edge portion of the engaging hole 38c having the same spherical shape. Then, the fixing nut 33 is tightened so that the engaging member is sandwiched from above and below by the spherical seat 32 and the fixing nut 33, and the fixed body side fixing means 20 is firmly fixed to the car side fixing means 21. The detection switch 35 is arranged so that the detector 35a engages with the engagement element 39 when the car fixing lever 24 is tilted to the car 4 side, and the screw rod 30 is engaged with the engagement hole of the engagement element 38. The detector 35a reaches the detection position when it is arranged in the position 38c, and the engagement state between the car fixing lever 24 and the engagement element 38 can be detected.

  According to the first embodiment of the present invention, the fixing nut 33 and the spherical seat 32 are configured to be vertically adjustable with respect to the axis of the screw rod 30, so that the car 4 can be used by using the car fixing device. When fixing the car to the guide rail 2 for the car, after the car 4 is completely stopped at a predetermined position, the fixing nut 33 and the spherical seat 32 are moved downward and upward respectively to engage the engaging element 38 from above and below. Can be made. Therefore, it is possible to increase the tolerance of the stop position of the car 4, and the workability is excellent. Further, since the fixing nut 33 and the spherical seat 32 lock the engaging member 38 from above and below by the spherical seat mechanism, the lever main body 27 is excessively large relative to the car frame 4b and the car guide rail 2 at the time of fixing. No load is applied, and even when the car 4 moves unexpectedly due to some influence, the load and impact applied are reliably supported, and the safety of the maintenance staff working on the upper surface of the car 4 is improved. It is possible to ensure with certainty.

  Further, since the work of engaging the spherical seat 32 with the engaging element 38 from below and the operation of engaging the fixing nut 33 with the engaging element 38 from above can be performed from above the engaging element 38, All operations when the car 4 is fixed to the car guide rail 2 can be performed on the upper surface of the car 4, and the workability is excellent. When the fixing work is performed from the upper surface of the car 4 as in the first embodiment, even if the stopper nut 31 is integrated with the screw rod 30, the same effect as the present invention can be obtained. Further, in order to prevent the screw rod 30 from completely coming out of the lever main body 27 when the screw rod 30 is rotated in the direction of removing from the lever main body 27 and the spherical seat 32 is engaged with the engagement element 38 from below, For example, you may equip the front-end | tip part of the screw rod 30 extended in the play hole part 27c with the prevention mechanism.

  In the first embodiment of the present invention, the case where the fixed body side fixing means 20 is provided on one side of one car guide rail 2 erected on the hoistway wall 1a side has been described. The car-side fixing means 21 may be provided, and the fixed body-side fixing means 20 may be provided for each of the opposing car guide rails 2 so that the acting load is distributed to the car guide rails 2. . Further, the fixed body side fixing means 20 may be installed on both sides of the car guide rail 2 so that the load is applied to the car guide rails 2 evenly. In such a case, by supporting the car fixing levers 24 arranged on both sides of the car guide rail 2 with a single support pin 29, it is possible to improve the workability by linking both of them. is there.

  Further, the positions of the fixed body side fixing means 20 and the car side fixing means 21 may be interchanged. That is, the engagement element 38 is provided on one of the car 4 and the fixed body of the hoistway 1, and the car 4 is engaged with the engagement element 38 on the other of the car 4 and the fixed body of the hoistway 1. By providing a fixture having a configuration such as the fixed body side fixing means 20 to be fixed within 1, it is possible to achieve the same effect as the present invention.

  It goes without saying that the car 4 can be fixed to the fixed body of the hoistway 1 by work from below by configuring the car fixing device upside down with respect to the first embodiment.

  The application of the car fixing device according to the present invention is not limited to a machine room-less elevator device in which elevator devices such as the hoisting machine 15 and the control panel 19 are provided in the hoistway 1. In a room-less elevator device, elevator equipment is often provided on the top of the hoistway 1. Therefore, by providing a car fixing device on the upper part of the car 4 and the fixed body on the top of the hoistway 1, It is possible to perform maintenance work on the devices installed on the top of the hoistway 1 and the upper surface of the car 4, which is a particularly effective means.

It is a top view of the elevator apparatus in Embodiment 1 of this invention. It is a side view of the elevator apparatus in Embodiment 1 of this invention. It is a front view of the elevator car fixing device in Embodiment 1 of this invention. It is a side view of the elevator car fixing device in Embodiment 1 of this invention. It is a BB arrow line view in FIG. It is a top view of the elevator car fixing device in Embodiment 1 of this invention. It is a principal part detail drawing of the elevator car fixing device in Embodiment 1 of this invention.

Explanation of symbols

  1 hoistway, 1a, 1b, 1c hoistway wall, 2 car guide rail, 3 landing, 4 car, 4a guide shoe, 4b car frame, 4c lower frame, 4d car floor, 4e car room, 4f vertical frame, 5 Car suspension car support frame, 6 Car suspension car, 7 Car shock absorber, 8 Balance weight, 8a Balance weight suspension car, 9 Balance weight guide rail, 10 Balance weight buffer, 11a, 11b Support beam, 12 Car side rope 13a, 13b Suspension, 14 hoisting machine base, 15 hoisting machine, 15a motor, 15b reduction gear, 15c drive sheave, 16 counterweight side tufting part, 17 main rope, 18 car side tugling part, 19 Control panel, 20 fixed body side fixing means, 21 car side fixing means, 22 rail clip, 23 support plate, 24 car fixing lever, 25, 35 detection switch, 25a, 35a detector, 26 lever support, 27 lever body, 27a mounting hole, 27b screw hole, 27c idle hole, 28 support, 29 support pin, 30 screw rod, 31 stopper nut , 32 spherical seat, 33 fixing nut, 34 screw head, 36 bracket, 37 stopper bolt, 37a screw part, 37b tip, 37c cam, 38, 39 engagement element, 38a inclined surface, 38b engagement groove, 38c engagement hole

Claims (11)

  Whether to move up and down in the elevator hoistway, an engagement element provided on one of the car and the fixed body of the hoistway, and an engagement element provided on the other of the car and the fixed body. And a fixture for fixing the car in the hoistway, the fixture being provided so that the position of the cage can be adjusted in the vertical direction, and an upper engagement that engages the engagement element from above when the cage is fixed. An elevator car fixing device comprising: a stopping body; and a lower locking body which is provided so as to be adjustable in a vertical direction and engages with the engagement element from below when the car is fixed.   2. The elevator car fixing device according to claim 1, wherein the engaging element or the fixing tool is provided on each side of the car.   The fixed body of the hoistway is a guide rail for a car, and the engaging element or the fixture is provided on both sides of the guide rail for the car in between. Elevator car fixing device.   The elevator according to any one of claims 1 to 3, wherein the position of the upper locking body and the lower locking body can be adjusted from either one of the upper side and the lower side of the engaging element. Basket fixing device.   The elevator car fixing device according to any one of claims 1 to 4, wherein the upper locking body and the lower locking body lock the engaging element from above and below by a spherical seat mechanism.   The elevator car fixing device according to any one of claims 1 to 5, further comprising a first detection switch for detecting an engagement state between the engagement element and the fixture.   The engagement element is provided on either one of the fixed body at the upper part of the car and the upper part of the hoistway, and the fixture is provided on either one of the fixed objects at the upper part of the car and the upper part of the hoistway. The elevator car fixing device according to any one of claims 1 to 6.   8. The machine room-less elevator car fixing device according to claim 1, wherein an elevator hoisting machine and an elevator control panel are provided in the hoistway.   The fixture includes a lever main body rotatably provided on one of the car and the fixed body of the hoistway, and a screw rod screwed into the lever main body. The elevator car according to any one of claims 1 to 8, wherein at least one of the bodies is screwed into the screw rod so as to be positionally adjustable with respect to an axis of the screw rod. Fixing device.   The lower locking body includes a pair of spherical seats loosely penetrated by a screw rod, and a stopper nut disposed below the spherical seat and screwed onto the screw rod. The elevator car fixing device according to claim 9.   The fixing device includes a lever stopper that locks the rotation of the lever body, and a second detection switch that detects a locking state of the lever body by the lever stopper. The elevator car fixing device according to claim 10.

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