Elevator car and method for rescuing passengers in elevator

Abstract

The invention provides an elevator car and an elevator passenger rescue method, which can realize light weight of a car frame and can efficiently rescue passengers. In an elevator car (11), a car body (5) is provided with a car entrance (57) and a rescue port (58). The car frame (6) has: a bottom frame (61) on which the car body (5) is placed; an upper frame (62) positioned above the car body (5); and a vertical frame (63) connecting the bottom frame (61) and the upper frame (62). The connecting diagonal member (7B) is disposed so as to be inclined with respect to the vertical frame (63) and the bottom frame (61) at a position facing the rescue opening (58) on the outer side of the car body (5). The connecting diagonal member (7B) has: a first reinforcing section (73) attached to the vertical frame (63); and a second reinforcing section (74) attached to the bottom frame (61). The first reinforcing part (73) is detachably connected to the second reinforcing part (74).

Description

Technical Field

[0001] The present invention relates to an elevator car and a passenger rescue method of the elevator. Background Art

[0002] Patent Document 1 discloses an elevator car in which diagonal braces are connected to a bottom frame and a vertical frame in order to reinforce a car frame having a bottom frame and a vertical frame.

[0003] Patent Document 2 discloses an elevator having rescue hatches on the sides of two cars moving along two paths adjacent to each other. When a passenger is trapped in one car, the other car, which is normal, is stopped at a position adjacent to the one car, and the passenger can be rescued from the one car to the other car through the rescue hatches of the cars.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2017-114600

[0007] Patent Document 2: Japanese Patent No. 5055969 Summary of the invention

[0008] Problems to be solved by the invention

[0009] In the elevator car disclosed in Patent Document 1, the car frame can be made lighter by reinforcing it with a diagonal brace. However, in the elevator disclosed in Patent Document 2, when a diagonal brace is arranged opposite to the rescue opening of the car, the diagonal brace becomes an obstacle during the rescue of passengers, and the rescue of passengers cannot be performed efficiently.

[0010] An object of the present disclosure is to provide an elevator car and an elevator passenger rescue method, which can achieve lightweighting of a car frame and can efficiently rescue passengers.

[0011] Means for solving problems

[0012] The elevator car of the present invention comprises: a car body; a car frame, which supports the car body; and a connecting diagonal bracing member, which is installed on the car frame. The car body is provided with a car entrance and exit and a rescue port, and the rescue port is located at a position different from the car entrance and exit. The car frame comprises: a bottom frame, which carries the car body; an upper frame, which is located above the car body; and a longitudinal frame, which connects the bottom frame and the upper frame. The connecting diagonal bracing member is arranged obliquely relative to the longitudinal frame and the bottom frame at a position opposite to the rescue port on the outside of the car body. The connecting diagonal bracing member comprises: a first reinforcement portion, which is installed on the longitudinal frame; and a second reinforcement portion, which is installed on the bottom frame. The first reinforcement portion is connected to the second reinforcement portion in a detachable manner.

[0013] Effects of the Invention

[0014] According to the present disclosure, the weight of the car frame can be reduced and passengers can be rescued efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a block diagram showing an elevator according to Embodiment 1.

[0016] Figure 2 Yes means Figure 1 A perspective view of the car of the first elevator machine.

[0017] Figure 3 Yes means Figure 1 A perspective view of the car of the second elevator machine.

[0018] Figure 4 Yes means Figure 2 Side view of the car.

[0019] Figure 5 Yes means Figure 3 Side view of the car.

[0020] Figure 6 It means in Figure 4 A side view of a car showing a state in which a first reinforcement portion is detached from a second reinforcement portion.

[0021] Figure 7 It means in Figure 5 A side view of a car showing a state in which a first reinforcement portion is detached from a second reinforcement portion.

[0022] Figure 8 Yes means Figure 4 An exploded perspective view of a connecting portion of a first reinforcement portion and a second reinforcement portion in a connecting brace component.

[0023] Fig. 9 This is a flowchart showing the passenger rescue method of the elevator according to the first embodiment.

[0024] Description of symbols

[0025] 5: car body, 6: car frame, 7B: connecting diagonal bracing member, 57: car entrance and exit, 58: rescue port, 61: bottom frame, 62: upper frame, 63: longitudinal frame, 73: first reinforcement part, 74: second reinforcement part, 75: butterfly screw (fastener), 76: long hole, 77: protrusion. DETAILED DESCRIPTION

[0026] The method for implementing the object of the present disclosure is described with reference to the accompanying drawings. In each figure, the same or equivalent parts are marked with the same reference numerals, and repeated descriptions are appropriately simplified or omitted. In addition, the object of the present disclosure is not limited to the following embodiments, and any constituent element of the embodiment can be deformed or omitted without departing from the scope of the present disclosure.

[0027] Implementation Method 1

[0028] Figure 1 This is a block diagram showing an elevator according to Embodiment 1. In the figure, the elevator includes a first elevator machine 1 and a second elevator machine 2. The first elevator machine 1 and the second elevator machine 2 are installed adjacent to each other.

[0029] The first elevator machine 1 has a car 11, a counterweight 12, a traction machine 13, a deflector pulley 14, and a plurality of suspension bodies 15. The second elevator machine 2 has a car 21, a counterweight 22, a traction machine 23, a deflector pulley 24, and a plurality of suspension bodies 25.

[0030] A machine room 4 is provided at the upper part of the hoistway 3. A car 11 and a counterweight 12 of the first elevator machine 1, and a car 21 and a counterweight 22 of the second elevator machine 2 are provided in the hoistway 3. A traction machine 13 and a deflector sheave 14 of the first elevator machine 1, and a traction machine 23 and a deflector sheave 24 of the second elevator machine 2 are provided in the machine room 4.

[0031] In the first elevator machine 1, the hoisting machine 13 generates a driving force for moving the car 11 and the counterweight 12. The hoisting machine 13 has a driving sheave 13a. The driving sheave 13a is rotated by the driving force of the hoisting machine 13.

[0032] In the first elevator machine 1, a plurality of suspension bodies 15 are wound around the driving sheave 13a and the deflector pulley 14. As the suspension body 15, a rope, a belt, or the like is used. One end of each suspension body 15 is connected to the car 11, and the other end of each suspension body 15 is connected to the counterweight 12. Thus, in the first elevator machine 1, the car 11 and the counterweight 12 are suspended from the hoistway 3 via the suspension bodies 15. In the first elevator machine 1, the car 11 and the counterweight 12 are moved in the vertical direction in the hoistway 3 by the rotation of the driving sheave 13a.

[0033] In the second elevator machine 2, the hoisting machine 23 generates a driving force for moving the car 21 and the counterweight 22. The hoisting machine 23 has a driving sheave 23a. The driving sheave 23a is rotated by the driving force of the hoisting machine 23.

[0034] In the second elevator machine 2, a plurality of suspension bodies 25 are wound around the driving sheave 23a and the deflector pulley 24. As the suspension body 25, a rope, a belt, or the like is used. One end of each suspension body 25 is connected to the car 21, and the other end of each suspension body 25 is connected to the counterweight 22. Thus, in the second elevator machine 2, the car 21 and the counterweight 22 are suspended from the hoistway 3 via the suspension bodies 25. In the second elevator machine 2, the car 21 and the counterweight 22 are moved in the vertical direction in the hoistway 3 by the rotation of the driving sheave 23a.

[0035] The car 11 of the first elevator machine 1 moves on a first path set in the hoistway 3 in the up-down direction. The car 21 of the second elevator machine 2 moves on a second path set in the hoistway 3 in the up-down direction. The first path and the second path are two paths set in the same hoistway 3. In addition, the first path and the second path are adjacent to each other in the width direction of the hoistway 3. Therefore, when the car 11 and the car 21 stop at the same height, the positions of the car 11 and the car 21 are adjacent to each other.

[0036] Figure 2 Yes means Figure 1 A perspective view of the car 11 of the first elevator machine 1 is shown in FIG. Figure 3 Yes means Figure 1 The car 21 of the second elevator machine 2 is a perspective view. The car 11 and the car 21 each include a car body 5, a car frame 6, and a plurality of diagonal bracing members 7. The car 11 and the car 21 are each arranged so that the height direction of the car body 5 coincides with the vertical direction.

[0037] In each of the car 11 and the car 21, a specific direction perpendicular to the height direction of the car body 5 is the depth direction of the car body 5. In addition, in each of the car 11 and the car 21, a direction perpendicular to both the height direction and the depth direction of the car body 5 is the width direction of the car body 5. The car 11 and the car 21 are respectively arranged in the hoistway 3 in such a manner that the width direction of the car body 5 is consistent with the width direction of the hoistway 3.

[0038] The car body 5 has a car floor 51, a car ceiling 52, a car front wall 53, a car back wall 54, a first car side wall 55, and a second car side wall 56. The space inside the car body 5 is surrounded by the car floor 51, the car ceiling 52, the car front wall 53, the car back wall 54, the first car side wall 55, and the second car side wall 56.

[0039] The car ceiling 52 is located above the car floor 51. The car front wall 53 and the car rear wall 54 face each other in the depth direction of the car body 5. The first car side wall 55 and the second car side wall 56 face each other in the width direction of the car body 5.

[0040] In each of the car 11 and the car 21, when the car front wall 53 is viewed from the outside of the car body 5 along the depth direction of the car body 5, the first car side wall 55 is located on the right side of the car front wall 53, and the second car side wall 56 is located on the left side of the car front wall 53. When the positions of the car 11 and the car 21 are adjacent to each other, the first car side wall 55 of the car 11 and the second car side wall 56 of the car 21 are opposite to each other.

[0041] The car frame 6 supports the car body 5. The car frame 6 includes a bottom frame 61, an upper frame 62, and a pair of vertical frames 63.

[0042] The car body 5 is placed on the bottom frame 61. Thus, the bottom frame 61 supports the car body 5 from below. In the present embodiment, the bottom frame 61 has a rectangular shape along the outer periphery of the car floor 51.

[0043] The upper frame 62 is located above the car body 5. The upper frame 62 is arranged along the width direction of the car body 5. One end of each suspension body 15 of the first elevator machine 1 is connected to the upper frame 62 of the car 11. One end of each suspension body 25 of the second elevator machine 2 is connected to the upper frame 62 of the car 21.

[0044] The pair of longitudinal frames 63 are arranged on both sides in the width direction of the car body 5. That is, the car body 5 is arranged between the pair of longitudinal frames 63 in the width direction of the car body 5. One longitudinal frame 63 of the pair of longitudinal frames 63 faces the first car side wall 55, and the other longitudinal frame 63 faces the second car side wall 56.

[0045] Each vertical frame 63 is arranged along the height direction of the car body 5. The lower end of each vertical frame 63 is fixed to the bottom frame 61. The upper end of each vertical frame 63 is fixed to the upper frame 62. Thus, each vertical frame 63 connects the bottom frame 61 and the upper frame 62.

[0046] A plurality of diagonal bracing members 7 are mounted on the car frame 6. In addition, a plurality of diagonal bracing members 7 are connected to the bottom frame 61 from a pair of longitudinal frames 63 on the outside of the car body 5. Thus, each diagonal bracing member 7 reinforces the car frame 6. In the present embodiment, four diagonal bracing members 7 are mounted on the car frame 6. In addition, in the present embodiment, one longitudinal frame 63 is connected to the bottom frame 61 via two diagonal bracing members 7, and the other longitudinal frame 63 is connected to the bottom frame 61 via the remaining two diagonal bracing members 7.

[0047] Two upper diagonal brace mounting portions 65 are provided in the middle of each longitudinal frame 63. Thus, four upper diagonal brace mounting portions 65 are provided in the car frame 6. The four upper diagonal brace mounting portions 65 correspond to four diagonal brace members 7, respectively. Each diagonal brace member 7 is mounted to the longitudinal frame 63 via the corresponding upper diagonal brace mounting portion 65.

[0048] Four lower diagonal brace mounting portions 66 are provided on the outer periphery of the bottom frame 61. The position of each lower diagonal brace mounting portion 66 is lower than the position of each upper diagonal brace mounting portion 65. The four lower diagonal brace mounting portions 66 are provided at the four corners of the bottom frame 61. Thus, two of the four lower diagonal brace mounting portions 66 are located closer to the front wall 53 of the car than to each longitudinal frame 63, and the remaining two lower diagonal brace mounting portions 66 are located closer to the rear wall 54 of the car than to each longitudinal frame 63.

[0049] The four lower diagonal brace mounting portions 66 correspond to the four diagonal brace members 7 , respectively. Each diagonal brace member 7 is mounted on the bottom frame 61 via the corresponding lower diagonal brace mounting portion 66 . Thus, each diagonal brace member 7 is arranged to be inclined relative to the vertical frame 63 and the bottom frame 61 .

[0050] The car body 5 is provided with a car entrance 57 and a rescue opening 58. The car entrance 57 can be opened and closed by a pair of car doors (not shown). The rescue opening 58 can be opened and closed by a rescue door (not shown).

[0051] During normal operation of the first elevator machine 1, when the car 11 stops at each floor, passengers can get on and off the car body 5 of the car 11 through the car entrance 57 of the car 11. During normal operation of the second elevator machine 2, when the car 21 stops at each floor, passengers can get on and off the car body 5 of the car 21 through the car entrance 57 of the car 21.

[0052] In the car 11 of the first elevator machine 1, as shown in FIG. Figure 2 As shown, the car entrance 57 is provided on the car front wall 53, and the rescue opening 58 is provided on the first car side wall 55. Thus, in the car 11, the rescue opening 58 is located at a position different from the car entrance 57. In the car 11, the rescue opening 58 is provided on the first car side wall 55, avoiding a position opposite to the longitudinal frame 63. In the present embodiment, in the car 11, the rescue opening 58 is provided at a position closer to the car rear wall 54 than the longitudinal frame 63.

[0053] On the other hand, in the car 21 of the second elevator machine 2, as shown in FIG. Figure 3 As shown, the car entrance 57 is provided on the car front wall 53, and the rescue opening 58 is provided on the second car side wall 56. Thus, in the car 21, the rescue opening 58 is also located at a position different from the car entrance 57. In the car 21, the rescue opening 58 is provided on the second car side wall 56, avoiding a position opposite to the longitudinal frame 63. In the present embodiment, in the car 21, the rescue opening 58 is provided at a position closer to the car rear wall 54 than the longitudinal frame 63.

[0054] In each of the car 11 and the car 21, three of the four diagonal bracing members 7 are normal diagonal bracing members 7A, and one diagonal bracing member 7 is a connecting diagonal bracing member 7B. In each of the car 11 and the car 21, each normal diagonal bracing member 7A is arranged away from a position facing the car entrance 57 and the rescue opening 58. In contrast, in each of the car 11 and the car 21, the connecting diagonal bracing member 7B is arranged at a position facing the rescue opening 58.

[0055] Therefore, in the car 11, if Figure 2 As shown in FIG. 1 , of the two diagonal bracing members 7 located on the first car side wall 55 side of the car body 5, the diagonal bracing member 7 located near the car back wall 54 becomes the connecting diagonal bracing member 7B. Figure 3 As shown, of the two diagonal bracing members 7 located on the second car side wall 56 side of the car body 5, the diagonal bracing member 7 located closer to the car rear face wall 54 serves as a connecting diagonal bracing member 7B.

[0056] Figure 4 Yes means Figure 2 A side view of the car 11 is shown in FIG. Figure 5 Yes means Figure 3 A side view of the car 21 is shown. Figure 4 The state when the car 11 is viewed from the first car side wall 55 side of the car 11 is shown. Figure 5 The state of the car 21 when viewed from the second car side wall 56 of the car 21 is shown. In each of the car 11 and the car 21, the car body 5 is placed on the bottom frame 61 via a plurality of vibration isolators 8 provided at the four corners of the bottom frame 61. Thus, in each of the car 11 and the car 21, the transmission of vibration from the car frame 6 to the car body 5 is suppressed.

[0057] Each normal diagonal bracing member 7A includes a main body portion 71 and a rod-shaped portion 72 .

[0058] The main body 71 is a strip-shaped portion disposed along the length direction of the diagonal member 7A. One end of the main body 71 is attached to the vertical frame 63 via the upper diagonal attachment portion 65. A rod-shaped portion 72 is fixed to the other end of the main body 71.

[0059] The rod-shaped portion 72 protrudes from the other end of the main body portion 71 in the longitudinal direction of the normal diagonal member 7A. The rod-shaped portion 72 is attached to the bottom frame 61 via the lower diagonal attachment portion 66. At least a portion of the rod-shaped portion 72 is a threaded portion.

[0060] On the other hand, the connecting brace member 7B has a first reinforcement portion 73 and a second reinforcement portion 74 .

[0061] The first reinforcement part 73 is a strip-shaped part along the longitudinal direction of the connecting brace member 7B. One end of the first reinforcement part 73 is attached to the vertical frame 63 via the upper brace attachment part 65. The other end of the first reinforcement part 73 is connected to the second reinforcement part 74.

[0062] The second reinforcement portion 74 is disposed along the longitudinal direction of the connecting brace member 7B. The length of the second reinforcement portion 74 is shorter than the length of the first reinforcement portion 73. The second reinforcement portion 74 includes a plate-shaped portion 741 and a rod-shaped portion 742.

[0063] The plate-like portion 741 is in the shape of a strip along the longitudinal direction of the connecting brace member 7B. The other end of the first reinforcing portion 73 is connected to one end of the plate-like portion 741. The rod-like portion 742 is fixed to the other end of the plate-like portion 741.

[0064] The rod-shaped portion 742 protrudes from the other end of the plate-shaped portion 741 in the length direction of the connecting brace member 7B. The rod-shaped portion 742 is mounted on the bottom frame 61 via the lower brace mounting portion 66. At least a portion of the rod-shaped portion 742 is a threaded portion. The shape of the rod-shaped portion 742 in the connecting brace member 7B is the same as the shape of the rod-shaped portion 72 in the normal brace member 7A.

[0065] Each upper diagonal brace mounting portion 65 has a mounting shaft 651. In each upper diagonal brace mounting portion 65, the mounting shaft 651 is arranged along the width direction of the car body 5. The main body 71 of each normal diagonal brace member 7A is mounted to the longitudinal frame 63 in a manner that can rotate around the mounting shaft 651 of the corresponding upper diagonal brace mounting portion 65. The first reinforcing portion 73 connecting the diagonal brace members 7B is mounted to the longitudinal frame 63 in a manner that can rotate around the mounting shaft 651 of the corresponding upper diagonal brace mounting portion 65.

[0066] Each lower diagonal support mounting portion 66 has a socket 661 and a nut 662. A through hole is provided in the socket 661. The socket 661 is fixed to the bottom frame 61 in such a manner that the through hole is inclined relative to the horizontal plane.

[0067] The rod-shaped portion 72 of each normal diagonal bracing member 7A is inserted into the through hole of the socket 661 of the corresponding lower diagonal bracing mounting portion 66. The nut 662 is screwed into the rod-shaped portion 72 inserted into the through hole of the socket 661. In each normal diagonal bracing member 7A, the nut 662 screwed into the rod-shaped portion 72 is locked in the socket 661, thereby preventing the rod-shaped portion 72 from falling off from the socket 661. Each normal diagonal bracing member 7A is mounted on the bottom frame 61 by fastening the nut 662 to the rod-shaped portion 72.

[0068] The rod-shaped portion 742 of the connecting brace member 7B is inserted into the through hole of the socket 661 of the corresponding lower brace mounting portion 66. The nut 662 is screwed into the rod-shaped portion 742 inserted into the through hole of the socket 661. In the connecting brace member 7B, the nut 662 screwed into the rod-shaped portion 742 is locked in the socket 661, thereby preventing the rod-shaped portion 742 from falling off from the socket 661. The second reinforcing portion 74 of the connecting brace member 7B is mounted on the bottom frame 61 by fastening the nut 662 to the rod-shaped portion 742.

[0069] The other end of the first reinforcement portion 73 is detachably connected to the plate-like portion 741 of the second reinforcement portion 74 by a butterfly screw 75 as a fastener. In the connecting brace member 7B, the first reinforcement portion 73 and the second reinforcement portion 74 are separated by removing the butterfly screw 75.

[0070] Figure 6 It means in Figure 4 A side view of a state in which the first reinforcement portion 73 and the second reinforcement portion 74 of the car 11 are separated. Figure 7 It means in Figure 5 1 is a side view of a state where the first reinforcement part 73 and the second reinforcement part 74 are separated in the car 21. In each of the cars 11 and 21, when the first reinforcement part 73 and the second reinforcement part 74 are separated, the first reinforcement part 73 hangs down from the mounting shaft 651 of the upper diagonal brace mounting part 65 due to its own weight. As a result, the first reinforcement part 73 is arranged along the longitudinal frame 63, and the first reinforcement part 73 is separated from the position opposite to the rescue opening 58.

[0071] Figure 8 Yes means Figure 4 1 is an exploded perspective view of the connection portion of the first reinforcement portion 73 and the second reinforcement portion 74 in the connecting brace member 7B. A long hole 76 is provided in the plate-like portion 741 of the second reinforcement portion 74 along the length direction of the second reinforcement portion 74. The long hole 76 penetrates the plate-like portion 741 along the thickness direction of the plate-like portion 741.

[0072] The first reinforcement part 73 is provided with a protrusion 77. The protrusion 77 protrudes from the first reinforcement part 73 in the thickness direction of the first reinforcement part 73. The protrusion 77 is formed with a pair of side surfaces along the length direction of the first reinforcement part 73. In the present embodiment, the protrusion 77 is in a rectangular parallelepiped shape.

[0073] The protrusion 77 is inserted into the long hole 76. When the protrusion 77 is inserted into the long hole 76, the longitudinal direction of each of the first reinforcing portion 73 and the second reinforcing portion 74 coincides with the longitudinal direction of the connecting brace member 7B. In addition, when the protrusion 77 is inserted into the long hole 76, a pair of side surfaces of the protrusion 77 contact the inner surface of the long hole 76, thereby preventing the first reinforcing portion 73 from rotating relative to the second reinforcing portion 74. When the protrusion 77 is inserted into the long hole 76, the protrusion 77 can slide in the long hole 76 along the longitudinal direction of the connecting brace member 7B. Thus, the long hole 76 serves as a guide hole for guiding the protrusion 77.

[0074] The protrusion 77 is provided with a threaded hole 78. The depth direction of the threaded hole 78 coincides with the thickness direction of the first reinforcing portion 73. The butterfly screw 75 is screwed into the threaded hole 78 of the protrusion 77. Thus, the butterfly screw 75 is attached to the protrusion 77. A flat washer 79 is interposed between the butterfly screw 75 and the plate-like portion 741.

[0075] The butterfly screw 75 is attached to and fastened to the protrusion 77 inserted into the long hole 76, thereby fastening the first reinforcement part 73 to the plate-shaped part 741 of the second reinforcement part 74. That is, the first reinforcement part 73 is fastened to the second reinforcement part 74 by the butterfly screw 75 attached to the protrusion 77.

[0076] In the connecting brace member 7B, the first reinforcing portion 73 and the second reinforcing portion 74 are separated by removing the butterfly screw 75 from the protrusion 77. Thus, in the connecting brace member 7B, the first reinforcing portion 73 and the second reinforcing portion 74 can be separated by manual work without using a tool. The structure of the connecting brace member 7B is the same in both the car 11 and the car 21.

[0077] Next, the operation is described. During normal operation of the elevator, the car 11 moves on the first path of the hoistway 3, and the car 21 moves on the second path of the hoistway 3. The movement of the car 11 is controlled by a control device (not shown) in the first elevator machine 1. The movement of the car 21 is controlled by a control device (not shown) in the second elevator machine 2. Thus, the movement of the car 11 and the car 21 are controlled independently of each other.

[0078] When the car 11 is stopped urgently due to an abnormality of the first elevator machine 1 while the car 11 is descending, the bottom frame 61 in the car 11 receives an inertial force from the car body 5 via the vibration isolators 8. As a result, the bottom frame 61 bends downward at the positions of the vibration isolators 8 in the car 11. At this time, in the car 11, the support of the diagonal bracing members 7 suppresses an increase in the amount of deflection of the bottom frame 61.

[0079] In the connecting brace member 7B of the car 11, the protrusion 77 slides in the long hole 76 in the direction in which the length of the connecting brace member 7B is increased by the deflection of the bottom frame 61. As a result, the protrusion 77 is locked to the second reinforcing portion 74 at the position of the end of the long hole 76. As a result, in the car 11, tension is applied not only to each normal brace member 7A but also to the connecting brace member 7B, thereby suppressing an increase in the deflection amount of the bottom frame 61.

[0080] Furthermore, when the car 21 is stopped urgently due to an abnormality of the second elevator machine 2 while the car 21 is descending, the increase in the amount of deflection of the bottom frame 61 in the car 21 is suppressed by the support of each diagonal brace member 7, similarly to the case of the car 11. At this time, in the connecting diagonal brace member 7B of the car 21, the projection 77 sliding in the long hole 76 is engaged with the second reinforcing portion 74, similarly to the connecting diagonal brace member 7B of the car 11. Thus, when the car 21 is stopped urgently, tension is applied not only to each normal diagonal brace member 7A of the car 21 but also to the connecting diagonal brace member 7B of the car 21, thereby suppressing the increase in the amount of deflection of the bottom frame 61 of the car 21.

[0081] In the case where a passenger is trapped in one of the cars 11 and 21, the one car becomes an abnormal car that cannot move in the shaft 3. In contrast, the other car is a normal car that can move in the shaft 3. Therefore, in the case where a passenger is trapped in one of the cars 11 and 21, the other car, which is a normal car, is used to rescue the passenger trapped in the one car, which is the abnormal car.

[0082] For example, when the car 11 carrying passengers stops due to an abnormality in the first elevator machine 1, the car 11 cannot move and the passengers are trapped in the car 11. Therefore, when the passengers are trapped in the car 11, the car 21 as a normal car is used to rescue the passengers trapped in the car 11 as an abnormal car.

[0083] Next, a passenger rescue method of an elevator for rescuing a passenger from the car 11 when the passenger is trapped in the car 11 will be described. Fig. 9 1 is a flowchart showing the passenger rescue method of an elevator according to Embodiment 1. The passenger rescue method of an elevator includes a car moving step S1, a rescue opening step S2, a diagonal bracing operation step S3, and a passenger moving step S4.

[0084] <Car moving step S1>

[0085] In the case where passengers are trapped in the car 11 due to some abnormality and the car 11 becomes an abnormal car, a car moving step S1 is implemented to move the car 21. The car 21 is a normal car that can move in the hoistway 3. In the car moving step S1, the car 21 is moved to a position adjacent to the car 11. That is, in the car moving step S1, the car 21 is moved to the same height as the stop position of the car 11. At this time, the car 21 is moved by manual operation performed by a rescuer. In addition, at this time, the car 21 is moved by having a rescuer board the car 21. When the car 21 stops at a position adjacent to the car 11, the rescue openings 58 of the car 11 and the car 21 are opposite to each other.

[0086] <Rescue port opening step S2>

[0087] After the car moving step S1, a rescue opening step S2 is performed to open the rescue openings 58 of the car 11 and the car 21. In the rescue opening step S2, the rescue openings 58 are opened by moving the rescue doors in the car 11 and the car 21. At this time, in the car 11, the passengers in the car body 5 of the car 11 open the rescue openings 58 of the car 11. In addition, in the car 21, the rescuers in the car body 5 of the car 21 open the rescue openings 58 of the car 21.

[0088] <Brace operation step S3>

[0089] After the rescue opening step S2, a bracing operation step S3 is performed to separate the first reinforcement part 73 from the second reinforcement part 74 at the connecting bracing member 7B of each of the car 11 and the car 21. In the bracing operation step S3, the first reinforcement part 73 is separated from the second reinforcement part 74 by removing the butterfly screw 75 connecting the bracing member 7B from the protrusion 77 in each of the car 11 and the car 21. At this time, in the car 11, the passengers in the car body 5 of the car 11 separate the first reinforcement part 73 from the second reinforcement part 74 of the car 11. In addition, in the car 21, the rescuers in the car body 5 of the car 21 separate the first reinforcement part 73 from the second reinforcement part 74 of the car 21.

[0090] Here, when the cars 11 and 21 are stopped in the hoistway 3, respectively, since there is no downward inertial force applied to the bottom frame 61 from the car body 5, the tension applied to the connecting brace members 7B of the cars 11 and 21 is weak. Therefore, in the bracing operation step S3, it is easy to remove the butterfly screws 75 in the connecting brace members 7B of the cars 11 and 21, respectively, and it is easy to separate the first reinforcement part 73 from the second reinforcement part 74.

[0091] In the bracing operation step S3, when the first reinforcing portion 73 is separated from the second reinforcing portion 74, the first reinforcing portion 73 hangs down due to its own weight from the mounting shaft 651 of the upper bracing mounting portion 65. As a result, the first reinforcing portion 73 of each of the cars 11 and 21 moves to a position away from the position opposite to the rescue opening 58 of each of the cars 11 and 21.

[0092] <Passenger movement step S4>

[0093] After the bracing operation step S3, a passenger moving step S4 is performed to move the passenger in the car body 5 of the car 11 into the car body 5 of the car 21. In the passenger moving step S4, the passenger moves from the car body 5 of the car 11 into the car body 5 of the car 21 through the rescue opening 58 of the car 11 and the rescue opening 58 of the car 21. At this time, since the first reinforcing portion 73 of each connecting bracing member 7B is separated from the position opposite to the rescue opening 58 of the car 11 and the car 21, the first reinforcing portion 73 of each connecting bracing member 7B does not hinder the movement of the passenger. Therefore, in the passenger moving step S4, the passenger can easily move from the car 11 to the car 21.

[0094] After the passenger moving step S4, the car 21 with the passengers on board moves to the nearest floor, thereby completing the rescue of the passengers.

[0095] In the case where a passenger is trapped in the car 21 and the car 21 becomes an abnormal car, the passenger trapped in the car 21 is rescued by using the car 11 as a normal car. That is, in the case where the car 11 becomes an abnormal car and in the case where the car 21 becomes an abnormal car, the action of the car 11 is switched with the action of the car 21. In the case where a passenger is trapped in the car 21 and the car 21 becomes an abnormal car, the steps are also performed in the order of the car moving step S1, the rescue opening step S2, the diagonal support operation step S3, and the passenger moving step S4. Thus, the passenger is moved from the car body 5 of the car 21 to the car body 5 of the car 11. After the passenger moving step S4, the car 11 as a normal car with the passenger on board moves to the nearest floor, thereby completing the rescue of the passenger.

[0096] In the elevator car 11 and the elevator car 21, a connecting brace member 7B is arranged at a position opposite to the rescue port 58 on the outside of the car body 5. In the connecting brace member 7B, the first reinforcing portion 73 mounted on the longitudinal frame 63 of the car frame 6 is connected to the second reinforcing portion 74 mounted on the bottom frame 61 of the car frame 6 in a detachable manner. Therefore, the car frame 6 can be reinforced by the connecting brace member 7B, and the strength of the car frame 6 itself can be reduced. As a result, the size of the components constituting the car frame 6 can be reduced, and the car frame 6 can be made lighter. Therefore, the traction machine 13 and the traction machine 23 can be miniaturized, and the overall cost of the elevator can be reduced.

[0097] In addition, the first reinforcement portion 73 can be separated from the second reinforcement portion 74. Therefore, the first reinforcement portion 73 can be separated from the position opposite to the rescue opening 58. Thus, when rescuing a passenger trapped in the car 11 or the car 21 through the rescue opening 58, the first reinforcement portion 73 can be prevented from becoming an obstacle. Therefore, the passenger can be efficiently rescued from the car 11 or the car 21.

[0098] In addition, in the connecting brace member 7B, a long hole 76 is provided on the second reinforcing portion 74, and a protrusion 77 is provided on the first reinforcing portion 73. When the protrusion 77 is inserted into the long hole 76, the protrusion 77 can slide in the long hole 76 along the length direction of the connecting brace member 7B. The first reinforcing portion 73 is fastened to the second reinforcing portion 74 by a butterfly screw 75 mounted on the protrusion 77. Therefore, the first reinforcing portion 73 can be connected to the second reinforcing portion 74 in a detachable manner with a simple structure. In addition, when the car 11 and the car 21 are stopped, the magnitude of the tension applied to the connecting brace member 7B can be alleviated. As a result, the first reinforcing portion 73 can be easily separated from the second reinforcing portion 74. Therefore, it is possible to more efficiently rescue passengers from the car 11 or the car 21.

[0099] The fastener for fastening the first reinforcement portion 73 to the second reinforcement portion 74 is a butterfly screw 75. Therefore, the butterfly screw 75 can be removed from the protrusion 77 without using a tool, and the first reinforcement portion 73 and the second reinforcement portion 74 can be separated more easily.

[0100] In addition, such a passenger rescue method of an elevator comprises a car moving step S1, a rescue opening step S2, and a bracing operation step S3. In the car moving step S1, when one of the cars 11 and the car 21 becomes an abnormal car, the other car, which is a normal car, is moved to a position adjacent to the abnormal car. In the rescue opening step S2, the rescue openings 58 of the abnormal car and the normal car are opened. In the bracing operation step S3, the first reinforcement part 73 and the second reinforcement part 74 are separated at the connecting bracing member 7B of the abnormal car and the normal car. Therefore, when rescuing passengers from the abnormal car to the normal car through the rescue openings 58 of the car 11 and the car 21, the connecting bracing members 7B of the car 11 and the car 21 will not become obstacles. As a result, passengers can be efficiently rescued from the car 11 or the car 21. In addition, by reinforcing the car frame 6 with the connecting bracing member 7B, the car frame 6 can also be made lighter.

[0101] Furthermore, in the above-described embodiment, in each of the car 11 and the car 21, the second reinforcement portion 74 may be rotatable relative to the bottom frame 61. In this case, the socket 661 into which the rod-shaped portion 742 of the second reinforcement portion 74 is inserted is provided on the bottom frame 61 in a manner rotatable around the mounting axis along the width direction of the car body 5. In this way, when the first reinforcement portion 73 and the second reinforcement portion 74 are separated, the second reinforcement portion 74 can be detached from the position opposite to the rescue port 58.

[0102] In the above-described embodiment, in each of the car 11 and the car 21, the length of the second reinforcement portion 74 is shorter than the length of the first reinforcement portion 73. However, the length of the second reinforcement portion 74 may be longer than the length of the first reinforcement portion 73, or the length of the second reinforcement portion 74 may be the same as the length of the first reinforcement portion 73. Even in this case, by separating the first reinforcement portion 73 from the second reinforcement portion 74, at least one of the first reinforcement portion 73 and the second reinforcement portion 74 can be detached from the position opposite to the rescue opening 58.

[0103] In addition, in the above-mentioned embodiment, the long hole 76 is provided in the second reinforcing portion 74, and the protrusion 77 is provided in the first reinforcing portion 73. However, the long hole 76 may be provided in the first reinforcing portion 73, and the protrusion 77 may be provided in the second reinforcing portion 74. In this case, the long hole 76 is provided in the first reinforcing portion 73 along the length direction of the first reinforcing portion 73. Even so, the first reinforcing portion 73 can be connected to the second reinforcing portion 74 in a detachable manner. In addition, in this case, the long hole 76 may also be set as a round hole. Even so, when the bottom frame 61 is flexed, the flexure amount of the bottom frame 61 can be suppressed by connecting the support of the diagonal bracing member 7B.

[0104] In addition, in the above-mentioned embodiment, the long hole 76 is provided in the second reinforcing portion 74. However, the long hole 76 may also be a round hole. Even so, the deflection amount of the bottom frame 61 can be suppressed by connecting the support of the diagonal bracing member 7B when the bottom frame 61 is deflected.

[0105] In addition, in the above-mentioned embodiment, the fastener for fastening the first reinforcing portion 73 to the second reinforcing portion 74 is the butterfly screw 75. However, the fastener for fastening the first reinforcing portion 73 to the second reinforcing portion 74 may not be the butterfly screw 75. As long as the fastener can be removed from the protrusion 77 without using a tool, for example, a hexagonal bolt may be used as the fastener for fastening the first reinforcing portion 73 to the second reinforcing portion 74.

[0106] The above-mentioned structure shown in the above-mentioned embodiment is an example of the content of this disclosure. The embodiment can be combined with other well-known technologies. Part of the structure of the embodiment can be omitted or changed within the scope of not departing from the gist of this disclosure.

Claims

1. An elevator car, comprising: Car body; a car frame supporting the car body; and A connecting brace member mounted on the car frame, The car body is provided with a car entrance and exit and a rescue opening, and the rescue opening is located at a position different from the car entrance and exit. The car frame includes: a bottom frame on which the car body is placed; an upper frame located above the car body; and a longitudinal frame connecting the bottom frame and the upper frame. The connecting brace member is arranged obliquely with respect to the vertical frame and the bottom frame at a position facing the rescue port on the outside of the car body. The connecting brace member comprises: a first reinforcing portion mounted on the longitudinal frame; and a second reinforcing portion mounted on the bottom frame. The first reinforcement portion is detachably connected to the second reinforcement portion.

2. The elevator car according to claim 1, wherein: One of the first reinforcement part and the second reinforcement part is provided with a long hole, and the other is provided with a protrusion inserted into the long hole. When the protrusion is inserted into the long hole, the protrusion can slide in the long hole along the length direction of the connecting brace member. The first reinforcement portion is fastened to the second reinforcement portion by a fastener mounted on the protrusion.

3. The elevator car according to claim 2, wherein: The fastener is a butterfly screw.

4. A passenger rescue method for an elevator, comprising: A car moving step of moving the other car, which is a normal car, to a position adjacent to the one car, which is an abnormal car, so that the rescue openings of the abnormal car and the normal car are opposed to each other when a passenger is trapped in the car of one of the cars of the elevator according to any one of claims 1 to 3 that moves along two paths adjacent to each other; a rescue opening step, after the car moving step, opening the rescue openings of the abnormal car and the normal car respectively; as well as A diagonal bracing operation step is performed after the rescue opening step, wherein the first reinforcement portion is separated from the second reinforcement portion at the connecting diagonal bracing components of the abnormal car and the normal car respectively.

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