ELEVATOR DEVICE
20250340403 ยท 2025-11-06
Inventors
- Ryoutarou TORII (Tokyo, JP)
- Atushi DAIKOKUYA (Tokyo, JP)
- So FUKASAWA (Tokyo, JP)
- Noriyuki KATOU (Tokyo, JP)
Cpc classification
International classification
Abstract
An object of the present invention is to provide an elevator device that can suppress slippage caused between a rail clip and a fixing member by a rotation moment acting on the fixing member in an elevator car fixing device. The elevator car fixing device of the present invention includes a fixing member 22 provided with a through hole 221 through which a stopper pin is to be inserted, a first holding member (rail clip) 23 that holds the fixing member 22 from a car guide rail 106 side, and a second holding member (rotation restraining member) 21A, 21B that holds the fixing member 22 from a side opposite to the first holding member 23 side. In addition, the second holding member 21A, 21B has an abutting portion 211 that abuts on a side surface 106e, 106f of the car guide rail 106.
Claims
1. An elevator device comprising, on a car top of an elevator car, an elevator car fixing device that fixes the elevator car to a car guide rail, wherein the elevator car fixing device is configured to include: a fixing portion, the fixing portion having a fixing member provided with a through hole, a first holding member that holds the fixing member from the car guide rail side, and a second holding member that holds the fixing member from a side opposite to the first holding; and a stopper pin operation mechanism portion having a stopper pin to be inserted into the through hole, and wherein the second holding member has an abutting portion that abuts on a side surface of the car guide rail.
2. The elevator device according to claim 1, further comprising: a fastener that extends through the first holding member, the fixing member, and the second holding member to fasten the first holding member, the fixing member, and the second holding member together, wherein the first holding member, the fixing member, and the second holding member are fastened together by the fastener such that the first holding member and the fixing member hold the car guide rail therebetween and the first holding member and the second holding member hold the fixing member therebetween.
3. The elevator device according to claim 2, wherein the car guide rail has: a guide portion that guides the elevator car; and a guide rail fixing portion fixed to a hoistway wall side, and wherein the first holding member is configured to hold a width-direction side end portion of the guide rail fixing portion between the fixing member and the first holding member.
4. The elevator device according to claim 3, wherein the abutting portion of the second holding member is configured to abut on a side surface of the guide rail fixing portion of the car guide rail.
5. The elevator device according to claim 4, wherein the fastener includes a bolt and a nut, wherein the second holding member is formed with a bolt insertion hole through which the bolt is to be inserted, and wherein the bolt insertion hole of the second holding member is formed such that a length dimension thereof in a width direction of the car guide rail is larger than a length dimension thereof in a vertical direction.
6. The elevator device according to claim 5, wherein the fixing member is configured to have a rectangular shape having a longitudinal direction along the width direction of the car guide rail.
7. The elevator device according to claim 5, wherein the fixing member 22 is configured to have an alphabetical letter-L shape and have a horizontally extending portion that extends in a horizontal direction and a vertically extending portion that extends in the vertical direction.
Description
BRIEF DESCRIPTION OF DRAWINGS
[0010]
[0011]
[0012]
[0013]
[0014]
[0015]
[0016]
[0017]
[0018]
[0019]
[0020]
[0021]
DESCRIPTION OF EMBODIMENTS
[0022] Referring to
[0023] Referring to
[0024] The elevator device 100 includes the elevator car 104, a counterweight 105, a hoist 103, a car guide rail 106, a counterweight guide rail 108, a control device (elevator control device) 102, and an elevator car fixing device 1.
[0025] The elevator car 104 and the counterweight 105 are provided inside a hoistway 101 provided in a housing structure and suspended in a well bucket manner by a main rope (not shown) wound around the hoist 103. The elevator car 104 and the counterweight 105 are connected by the main rope.
[0026] The main rope not shown is wound around the hoist 103, and the hoist 103 operates the main rope to move the elevator car 104 and the counterweight 105 upward and downward in the hoistway 101.
[0027] The car guide rail 106 and the counterweight guide rail 108 are provided to extend in the vertical direction (perpendicular direction) in the hoistway 101 and fixed by rail brackets 111 to a hoistway wall 101a. The car guide rail 106 guides the upward and downward movement of the elevator car 104. The counterweight guide rail 108 guides upward and downward movement of the counterweight 105.
[0028] The control device 102 controls a hoisting operation of the elevator device 100. Therefore, the control device 102 controls driving of the hoist 103.
[0029] The elevator car fixing device 1 is a device for positioning and fixing a car top (upper surface) 104a of the elevator car 104 at and to a specified floor where the hoist 103 and the control device 102 are placed when work such as inspection or repair of the hoist 103 and the control device 102 is to be performed, and is provided on the car top 104a of the elevator car 104.
[0030] Referring to
[0031] In the elevator device 100 in the present embodiment, the hoist 103 and the control device 102 are placed on a specified floor at a height position equal to or higher than a sum of a floor level 1FL of a lowermost floor and a height He of one floor. The specified floor is a floor where the host 103 and the control device 102 are to be placed, and the specified floor may also be described by being referred to as the floor where the hoist 103 and the control device 102 are to be placed or simply as the placement floor. Note that
[0032] When work such as inspection or repair of the hoist 103 and the control device 102 is to be performed, the car top (upper surface) 104a of the elevator car 104 is positioned to a floor level 2FL of the second floor corresponding to the specified floor, and a worker performs work on the car top 104a of the elevator car 104. In other words, in the present embodiment, the car top 104a of the elevator car 104 serves as a stage for the worker. Accordingly, the worker rides on the car top 104a from a boarding floor.
[0033] When the worker rides on the car top 104a from the boarding floor, the car top 104a of the elevator car 104 is positioned to coincide with a floor level of the boarding floor. For example, when the boarding floor is a first floor, the car top 104a of the elevator car 104 is positioned to the floor level 1FL of the first floor. In this case, the car top 104a need not coincide with the floor level 1FL of the boarding floor, and may appropriately be positioned within a range AH in which the worker can ride.
[0034] When the positioning of the car top (upper surface) 104a of the elevator car 104 to the floor level 2FL of the second floor corresponding to the specified floor is ended, the elevator car 104 is fixed with the elevator car fixing device 1 (see
[0035] Referring to
[0036] The elevator car fixing device 1 is operated on the car top 104a by the worker who has ridden on the car top 104a, to fix the elevator car 104 to the guide rail 106. Accordingly, the elevator car fixing device 1 is provided on the car top 104a.
[0037] The elevator car fixing device 1 is configured to include: a fixing portion 2 having a fixing member 22 provided with a through hole 221; and a stopper pin operation mechanism portion 3 having a stopper pin 31 to be inserted into the through hole 221.
[0038] The fixing portion 2 has the fixing member 22 formed of a plate-like member. The fixing member 22 in
[0039] One horizontal end portion of the horizontally extending portion 222 forms a fixed/supported portion 22a to be fixed to and supported by the car guide rail 106. As will be described with reference to
[0040] The vertically extending portion 223 is provided to extend downward from another horizontal end portion of the horizontally extending portion 222. The vertically extending portion 223 is provided with the through hole 221. The through holes 221 is located below the fixed/supported portion 22a.
[0041] The through hole 221 of the fixing member 22 forms an insertion hole (stopper pin insertion hole) through which the stopper pin 31 is to be inserted. The stopper pin 31 is an engagement member to be engaged with the fixing member 22 of the fixing portion 2, while the stopper pin insertion hole 221 serves as an engagement portion with which the stopper pin 31 is to be engaged.
[0042] Referring to
[0043] As illustrated in
[0044] As illustrated in
[0045] As illustrated in
[0046] As a result of the insertion of the stopper pin 31 through the stopper pin insertion hole 221 and the engagement of the stopper pin 31 with the fixing member 22 of the fixing portion 2, a load of the elevator car 104 is supported by the car guide rail 106 via the elevator car fixing device 1, and a position of the elevator car 104 is fixed with respect to the car guide rail 106.
[0047] Note that, as illustrated in
[0048] Referring to
[0049] As described above, the rotation restraining members 21A and 21B, the rail clips 23, and the fasteners 24 and 25 form the fixing portion 2 together with the fixing member 22. A surface 22c of the fixing member 22 having the flat plate shape which is opposed to the elevator car 104 is referred to as a front surface, while a surface thereof (surface opposite to the front surface 22c) which is opposed to the hoistway wall 101a is referred to as a back surface 22d.
[0050] The fixing member 22 in
[0051] The shape of the fixing member 22 is not limited to the shape in
[0052] As illustrated in
[0053] On the back surface 22d side of the fixing member 22, the rotation restraining members 21A and 21B are arranged.
[0054] As illustrated n
[0055] In the present embodiment, the two rail clips 23, the two fasteners 24, and the two fasteners 25 are arranged on a side surface 106e side of the guide rail fixing portion 106b, while the two rail clips 23, the two fasteners 24, and the two fasteners 25 are arranged on a side surface 106f side thereof. In other words, the two rail clips 23, the two fasteners 24 and the two fasteners 25 are arranged on each of both sides of guide rail fixing portion 106b.
[0056] Referring to
[0057] As illustrated in
[0058] The rail clips 23 form a holding member (first holding member) that holds the fixing member 22 from the front surface 22c side (car guide rail 106 side). The rotation restraining members 21A and 21B form a holding member (second holding member) that holds the fixing member 22 from the back surface 22d side (side opposite to the car guide rail 106 side).
[0059] In other words, the elevator device 100 in the present embodiment includes the fasteners 24 and 25 that extend through the first holding member 23, the fixing member 22, and the second holding members 21A and 21B to fasten the first holding member 23, the fixing member 22, and the second holding members 21A and 21B together.
[0060] The first holding member 23, the fixing member 22, and the second holding members 21A and 21B are configured to be fastened together by the fasteners 24 and 25 such that the first holding member 23 and the fixing member 22 hold the car guide rail 106 therebetween, while the first holding member 23 and the second holding members 21A and 21B hold the fixing member 22 therebetween.
[0061] The car guide rail 106 has the guide portion 106a that guides the elevator car 104, and the guide rail fixing portion 106b fixed to the hoistway wall 101a side. The first holding member 23 is configured so as to hold width-direction side end portions 106g and 106h (in the vicinities of the side surfaces 106e and 106f) of the guide rail fixing portion 106b between the fixing member 22 and the first holding member 23. As a result, it is possible to use the rail clips 23 that fix the car guide rail 106 to the hoistway wall 101a side, and standardize components.
[0062] In the fastening structure of the fixing member 22 using the rail clips 23 and the rotation restraining members 21A and 21B, the bolts 24 and the nuts 25 are fastened together in a state where the fixing member 22 is held between the rail clips 23 and the rotation restraining members 21A and 21B, while the guide rail fixing portion 106b of the car guide rail 106 is held between the rail clips 23 and the fixing member 22.
[0063] At a contact portion between each of the rail clips 23 and the guide rail fixing portion 106b, a contact surface 233 of the rail clip 23 comes into contact with the front surface 106c of the guide rail fixing portion 106. Meanwhile, at a contact portion between each of the rail clips 23 and the fixing member 22, a contact surface 234 of the rail clip 23 comes into contact with the front surface 22c of the fixing member 22. In this case, an area of the contact surface 234 at which the rail clips 23 are in contact with the front surface 22c of the fixing member 22 is small, and it is difficult for the rail clips 23 to obtain a large frictional fixing force against the fixing member 22.
[0064] As will also be understood from
[0065] If the rotation restraining members 21A and 21B are not used, the frictional fixing force of the rail clips 23 against the fixing member 22 cannot withstand the rotation moment, and slippage may occur between the rail clips 23 and the fixing member 22. When the slippage occurs between the rail clips 23 and the fixing member 22, due to the rotation moment, the fixing member 22 rotates in a direction in which one horizontal end portion thereof, which is provided with the stopper pin insertion hole 221, is raised relative to another horizontal end portion thereof.
[0066] Even when the rotation restraining members 21A and 21B are not used, the fixing member 22 receives the rotation moment and rotates to bring the bolts 24 into contact with the side surfaces 106e and 106f of the car guide rail 106, which restrains further rotation of the fixing member 22.
[0067] However, the elevator car fixing device 1 in which the slippage has occurred between the rail clips 23 and the fixing member 22 has lost reliability as the fixing device, and using the elevator car fixing device 1 as it is presents a problem. Alternatively, when contact between the stopper pin 31 and the stopper pin insertion holes 221 in the width direction (horizontal direction) of the car guide rail 106 occurs before the rotation of the fixing member 22 is restrained by contact between the bolts 24 and the side surfaces 106e and 106f of the car guide rail 106, and additionally, a contact pressure between the stopper pin 31 and the stopper pin insertion hole 221 increases, the stopper pin 31 may not be able to be pulled out of the stopper pin insertion hole 221. In other words, the fixation of the elevator car 104 by the fixing portion 2 may not be able to be cancelled.
[0068] In the present embodiment, the rotation restraining members 21A and 21B are used to restrain rotation of the fixing member 22 due to the rotation moment.
[0069] Referring to
[0070] A left view in
[0071] As illustrated in
[0072] The convex-shaped portion 211 is erectly provided on the front surface 21c of the fixing member 22 so as to protrude from the back surface 22d side of the fixing member 22 toward the front surface 22c side thereof. The convex-shaped portion 211 has a side surface 211a rising perpendicularly to the front surface 21c. The convex-shaped portion 211 is provided at each of both end portions of each of the rotation restraining members 21A and 21B in the vertical direction.
[0073] When viewed from the convex-shaped portion 211, the fixing member 22 is formed with a groove-shaped portion. The groove-shaped portion has the front surface 21c of the fixing member 22 as a bottom surface thereof, while having a side surface 211a of the convex-shaped portion 211 as the side surface thereof. In this case, the side surface 211a of the convex-shaped portion 211 provided at an upper end portion of the fixing member 22 and a side surface 211a of the convex-shaped portion 211 provided at a lower end portion thereof are opposed to each other in the vertical direction DrA.
[0074] As illustrated in
[0075] Each of the convex-shaped portion 211 and the side surface 211a thereof, which are opposed to the upper side surface 22e or the lower side surface 22f of the fixing member 22, functions as a restraining portion (rotation restraining portion) that restrains the rotation of the fixing member 22 when the rotation moment described later acts on the fixing member 22.
[0076] The convex-shaped portions 211 of the rotation restraining members 21A and 21B have side surfaces 211b opposed to the side surfaces 106e and 106f of the guide rail fixing portion 106b, which are formed at one end portions in the width direction DrB thereof. In a state where the fixing portion 2 is assembled to the car guide rail 106 as in
[0077] The convex-shaped portions 211 and the side surfaces 211b thereof form abutting portions that abut on the side surfaces 106e and 106f of the guide rail fixing portion 106b.
[0078] As described above, in the elevator device 100 according to the present embodiment including, on the car top 104a of the elevator car 104, the elevator car fixing device 1 that fixes the elevator car 104 to the car guide rail 106, the elevator car fixing device 1 is configured to include: the fixing portion 2 having the fixing member 22 provided with the through hole 221, the first holding members (rail clips) 23 that hold the fixing member 22 from the car guide rail 106 side, and the second holding members (rotation restraining members) 21A and 21B that hold the fixing member 22 from a side opposite to the first holding member 23 side; and the stopper pin operation mechanism portion 3 having the stopper pin 31 to be inserted into the through hole 221. The second holding members 21A and 21B have the abutting portions 211 that abut on the side surfaces 106e and 106f of the car guide rail 106.
[0079] In this case, the abutting portions 211 of the second holding members 21A and 21B may be configured appropriately to abut on the side surfaces 106e and 106f of the guide rail fixing portion 106b of the car guide rail 106. Since the side surfaces 106e and 106f of the guide rail fixing portion 106b are in the vicinities of the abutting portions 211, it is possible to provide the abutting portions 211 without increasing sizes of the rotation restraining members 21A and 21B.
[0080] By causing the side surfaces 211b of the convex-shaped portions 211 to abut on the side surfaces 106e and 106f of the guide rail fixing portion 106b, all or part of the rotation moment acting on the fixing member 22 is received by the rotation restraining members 21A and 21B. As a result, the rotation restraining members 21A and 21B restrain the rotation of the fixing member 22. By restraining the rotation of the fixing member 22, the rotation restraining members 21A and 21B can suppress slippage occurring between the rail clips 23 and the fixing member 22, and the fixing member 22 can be fixed securely to the car guide rail 106. This improves the reliability of the elevator car fixing device 1 serving as the fixing device.
[0081] To cause the side surfaces 211b of the convex-shaped portions 211 to abut on the side surfaces 106e and 106f of the guide rail fixing portion 106b, it is necessary to adjust positions of the rotation restraining members 21A and 21B with respect to the guide rail fixing portion 106b on the fixing member 22.
[0082] Back to
[0083] Note that, in the present embodiment, the two bolt insertion holes 213 are provided along the vertical direction DrA. The number of the bolt insertion holes 213 is not limited to 2, and the bolt insertion holes 213 may be provided appropriately according to the number of the fastened bolts 24. For example, in the case of
[0084] Meanwhile, as illustrated in
[0085] The number of the bolt insertion holes 224 in a direction along the width direction DrB corresponds to the rotation restraining members 21A and 21B. The number of the bolt insertion holes 224 in a direction along the vertical direction DrA is not limited to 2, and the bolt insertion holes 224 may be provided appropriately according to the number of the fastened bolts 24. For example, in the case of
[0086] The present invention is not limited to the above-described embodiments, and further includes various modifications. For example, the above-described embodiments have been described in detail in order to facilitate the understanding of the present invention, and the present invention is not necessarily limited to those including all of the described configurations. In addition, part of the configuration of each of the embodiments can be replaced with other configurations. In addition, part of the configuration of each of the embodiments can be subjected to addition, deletion, and replacement with respect to other configurations.
LIST OF REFERENCE SIGNS
[0087] 1 Elevator car fixing device [0088] 3 Stopper pin operation mechanism portion [0089] 21A, 21B Second holding member (rotation restraining member) [0090] 22 Fixing member [0091] 23 First holding member (rail clip) [0092] 24, 25 Fastener (bolt 24 and nut 25) [0093] 31 Stopper pin [0094] 100 Elevator device [0095] 104 Elevator car [0096] 104a Car top of elevator car 104 [0097] 106 Car guide rail [0098] 106a Guide portion of car guide rail 106 [0099] 106b Guide rail fixing portion [0100] 106e, 106f Side surface of car guide rail 106 [0101] 106g, 106h Width-direction side end portion of guide rail fixing portion 106b [0102] 211 Abutting portion of second holding member 21A, 21B that abuts on side surface 106e, 106f of guide rail fixing portion 106b [0103] 221 Through hole provided in fixing member 22 [0104] 222 Horizontally extending portion [0105] 223 Vertically extending portion