Elevator car safety railing

Abstract

Provided is an over-car safety fence for an elevator, said over-car safety fence being capable of suppressing an over-car handrail from being broken when an object is caught between the over-car handrail and equipment in the hoistway. This over-car safety fence for an elevator comprises: a first support column that is vertically disposed on the ceiling of the car of the elevator; a second support column that is vertically disposed on the ceiling so as to be separated horizontally from the first support column; and an over-car handrail that is provided to the first support column. The over-car handrail includes an engagement section placed on the second support column, and moves between a handrail installation position at which the engagement section has been placed on the second support column and a handrail release position at which the engagement section has been separated upward from the second support column.

Description

Technical Field

[0001] This disclosure relates to an upper safety fence for an elevator car.

Background Art

[0002] Conventionally, an upper safety fence for an elevator is known, which includes a pair of columns erected on the ceiling of an elevator car and a handrail provided across the pair of columns. The handrail has a pair of fixing parts fixed to each of the pair of columns one by one, and a breakable part provided across the pair of fixing parts. When an external force greater than a preset force acts on the breakable part, the breakable part is broken. Thereby, it is prevented that an object such as a tool held by an operator is sandwiched between the equipment in the hoistway and the handrail (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the configuration described in Patent Document 1, when an object is sandwiched between the equipment in the hoistway and the handrail, the breakable part of the handrail is broken. In this case, there is a problem that it takes time to recover the handrail.

[0005] This disclosure has been made to solve the above-described problems, and an object thereof is to provide an upper safety fence for an elevator that can suppress the breakage of the handrail when an object is sandwiched between the equipment in the hoistway and the handrail.

Means for Solving the Problems

[0006] The elevator car safety railing related to this disclosure is Moving up and down within the elevator shaft The elevator car comprises a first support column erected on the ceiling of the elevator car, a second support column erected on the ceiling horizontally away from the first support column, and a handrail for the car provided on the first support column, wherein the first and second support columns are erected on the part of the ceiling opposite to the landing in the depth direction of the elevator car, and the handrail for the car has a resting part that rests on the second support column, and the handrail for the car is, On the opposite side of the landing in the depth direction, The handrail installation position where the aforementioned support portion rests on the second support column 、 The aforementioned attachment point moves between a handrail open position and a position where it is separated upward from the second support column. [Effects of the Invention]

[0007] According to the elevator car safety railing described herein, if an object gets caught between the equipment in the hoistway and the handrail of the elevator car, it is possible to prevent the handrail from being damaged. [Brief explanation of the drawing]

[0008] [Figure 1] This is a diagram showing an elevator equipped with a safety railing above the car according to Embodiment 1. [Figure 2] Figure 1 is a perspective view showing the safety railing above the elevator car. [Figure 3] Figure 2 is a front view showing the main parts of the safety railing above the elevator car. [Figure 4] This is a cross-sectional view taken along the line IV-IV in Figure 3. [Figure 5] Figure 3 is a front view showing the handrail of the train car moved from the handrail installation position to the handrail release position. [Modes for carrying out the invention]

[0009] Embodiment 1. Figure 1 is a diagram showing the configuration of an elevator equipped with a safety fence on top of the car according to Embodiment 1. The elevator comprises an elevator car 1, a main rope 2, a counterweight 3, a hoisting machine 4, a deflection wheel 5, a safety fence on top of the car 6, a guide rail 7 for the counterweight, and a tie bar 8.

[0010] One end of the main rope 2 in its longitudinal direction is connected to the ceiling of the elevator car 1. The other end of the main rope 2 in its longitudinal direction is connected to the upper part of the counterweight 3. The middle section of the main rope 2 in its longitudinal direction is wrapped around the hoisting machine 4 and the deflection wheel 5. When the hoisting machine 4 is driven, the main rope 2 moves. As the main rope 2 moves, the elevator car 1 and the counterweight 3 move in opposite directions in the hoistway 9.

[0011] The counterweight guide rail 7 is installed in the hoistway 9 along the height direction. The counterweight guide rail 7 guides the counterweight 3 in the height direction. The tie bar 8 is equipment located inside the hoistway 9. The tie bar 8 is installed on the counterweight guide rail 7. The tie bar 8 prevents the main rope 2 from getting caught on the counterweight guide rail 7. Although Figure 1 shows one tie bar 8, multiple tie bars 8 are installed in the hoistway 9, lined up along the height direction.

[0012] Figure 2 is a perspective view showing the elevator car safety rail 6 in Figure 1. The elevator car safety rail 6 is installed on the ceiling of the elevator car 1.

[0013] The elevator car safety fence 6 comprises a first support post 601, a first support post 602, a first support post 603, a first support post 604, and a second support post 605. The elevator car safety fence 6 also comprises an elevator handrail 606, an elevator handrail 607, an elevator handrail 608, an elevator handrail 609, a connecting member 610, a connecting member 611, and a connecting member 612.

[0014] When viewing the elevator car 1 from the elevator landing, the front-back direction is defined as the depth direction D1 of the elevator car 1. When viewed from above, the direction orthogonal to the depth direction D1 is defined as the width direction D2 of the elevator car 1.

[0015] The first support columns 601 and 602 are arranged side by side in the depth direction D1. The first support column 601 is disposed closer to the elevator landing than the first support column 602. The first support columns 602 and 603 are arranged side by side in the width direction D2. The first support columns 603 and 604 are arranged side by side in the depth direction D1. The first support column 604 is disposed closer to the elevator landing than the first support column 603. The first support columns 604 and 601 are arranged side by side in the width direction D2. Each of the first support columns 601, 602, 603, and 604 stands on the ceiling of the elevator car 1.

[0016] The second support column 605 is disposed between the first support columns 602 and 603 in the width direction D2. The second support column 605 stands on the ceiling of the elevator car 1, horizontally separated from each of the first support columns 602 and 603. The second support column 605 is adjacent to the first support column 602 in the width direction D2. Also, the second support column 605 is adjacent to the first support column 603 in the width direction D2.

[0017] The car upper handrail 606 is provided across the first support columns 601 and 602. The car upper handrail 606 is connected to the upper end portions of the first support column 601 and the first support column 602, respectively. By connecting the car upper handrail 606 to each of the first support columns 601 and 602, the car upper handrail 606 is fixed to the elevator car 1.

[0018] The car upper handrail 607 is provided on the first support column 602. The car upper handrail 608 is provided on the first support column 603.

[0019] The upper handrail 609 of the cage is provided across the first support column 603 and the first support column 604. The upper handrail 609 of the cage is connected to the upper end of the first support column 603 and the upper end of the first support column 604 respectively. By connecting the upper handrail 609 of the cage to each of the first support column 603 and the first support column 604, the upper handrail 609 of the cage is fixed to the elevator cage 1.

[0020] The connecting member 610 is provided across the first support column 601 and the first support column 602. The connecting member 610 is arranged between the elevator cage 1 and the upper handrail 606 of the cage in the height direction.

[0021] The connecting member 611 is provided across the first support column 602 and the first support column 603. The connecting member 611 is arranged between the elevator cage 1 and the upper handrails 607 and 608 of the cage in the height direction.

[0022] The connecting member 612 is provided across the first support column 603 and the first support column 604. The connecting member 612 is arranged between the elevator cage 1 and the upper handrail 609 of the cage in the height direction.

[0023] FIG. 3 is a front view showing a main part of the upper safety fence 6 of the cage in FIG. 2. FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3. FIG. 5 is a front view showing a state where the upper handrail 607 of the cage in FIG. 3 has moved from the handrail installation position to the handrail release position. The upper handrail 607 of the cage is provided on the first support column 602 via a hinge 613.

[0024] The upper handrail 607 of the cage has a mounting portion 614 to which the hinge 613 is attached, a hanging portion 615 placed on the second support column 605, and a handrail main body 616 provided between the mounting portion 614 and the hanging portion 615.

[0025] The pivot axis of the hinge 613 is positioned along the depth direction D1. The elevator handrail 607 rotates around the pivot axis of the hinge 613. As the elevator handrail 607 rotates, it moves between the handrail installation position and the handrail release position. When the elevator handrail 607 is in the handrail installation position, the mounting portion 615 rests on the second support column 605. When the elevator handrail 607 is in the handrail release position, the mounting portion 615 moves upward relative to the second support column 605.

[0026] If no external force is acting on the handrail body 616 from below, the weight of the car handrail 607 will cause the car handrail 607 to be in the handrail installation position. If an external force is acting on the handrail body 616 from below, the external force acting on the handrail body 616 will cause the car handrail 607 to be in the handrail open position.

[0027] The elevator handrail 608 is attached to the first support column 603 via a hinge 617. The elevator handrail 608 has a mounting portion 618 to which the hinge 617 is attached, a resting portion 619 that rests on the second support column 605, and a handrail body 620 provided between the mounting portion 618 and the resting portion 619.

[0028] The pivot axis of the hinge 617 is positioned along the depth direction D1. The elevator handrail 608 rotates around the pivot axis of the hinge 617. As the elevator handrail 608 rotates, it moves between the handrail installation position and the handrail release position. When the elevator handrail 608 is in the handrail installation position, the mounting portion 619 rests on the second support column 605. When the elevator handrail 608 is in the handrail release position, the mounting portion 619 moves upward relative to the second support column 605.

[0029] If no external force is acting on the handrail body 620 from below, the weight of the car handrail 608 will cause the car handrail 608 to be in the handrail installation position. If an external force is acting on the handrail body 620 from below, the external force acting on the handrail body 620 will cause the car handrail 608 to be in the handrail open position.

[0030] The depth direction D1 of elevator car 1 coincides with the width direction of the car handrail 607 and the width direction of the car handrail 608, respectively.

[0031] The second support column 605 has a base portion 621, a wall portion 622, and a wall portion 623. The base portion 621 rests on a connecting member 611. The base portion 621 extends from the connecting member 611 along the height direction. When the position of the elevator car handrail 607 is the handrail installation position, the mounting portion 615 rests on the base portion 621. When the position of the elevator car handrail 608 is the handrail installation position, the mounting portion 619 rests on the base portion 621.

[0032] The base 621 has a through hole 624 that penetrates it in the width direction D2 of the elevator car 1. By forming the through hole 624 in the base 621, the weight of the base 621 is reduced.

[0033] Wall sections 622 and 623 form a pair of walls provided on the base 621. Each of wall sections 622 and 623 protrudes upward from the base 621. Wall sections 622 and 623 are spaced apart from each other in the width direction of the elevator car handrail 607. In other words, wall sections 622 and 623 are spaced apart from each other in the width direction of the elevator car handrail 608. Therefore, wall sections 622 and 623 are spaced apart from each other in the depth direction D1 of the elevator car 1. Wall section 622 is located closer to the elevator landing than wall section 623.

[0034] When the engaging portion 615 is placed on the base portion 621, the engaging portion 615 is positioned between the wall portion 622 and the wall portion 623. When the engaging portion 619 is placed on the base portion 621, the engaging portion 619 is positioned between the wall portion 622 and the wall portion 623.

[0035] Next, we will explain the operation of the elevator car safety barrier 6 when an object such as a tool held by a worker gets caught between the tie bar 8 and the elevator car handrail 607 while the elevator car 1 is descending. Note that the operation of the elevator car safety barrier 6 when an object gets caught between the tie bar 8 and the elevator car handrail 608 is the same as the operation of the elevator car safety barrier 6 when an object gets caught between the tie bar 8 and the elevator car handrail 607.

[0036] As the elevator car 1 descends, it moves closer to the tie bar 8. If an object is caught between the tie bar 8 and the car handrail 607 while the elevator car 1 is descending, an external force acts on the handrail body 616 of the car handrail 607 from below.

[0037] When an external force acts on the handrail body 616 from below, the elevator car handrail 607 rotates around the pivot axis of the hinge 613 and moves from the handrail installation position to the handrail release position. As the elevator car handrail 607 moves to the handrail release position, the engagement portion 615 moves upward away from the base 621. This eliminates the situation where an object is trapped between the tie bar 8 and the elevator car handrail 607.

[0038] As the object is no longer trapped between the tie bar 8 and the car handrail 607, no external force from below acts on the car handrail 607. As a result, the car handrail 607 rotates around the pivot axis of the hinge 613 and moves from the handrail open position to the handrail installed position. As the car handrail 607 moves to the handrail installed position, the state of the car handrail 607 returns to the state it was in before the object was trapped between the tie bar 8 and the car handrail 607.

[0039] As described above, the elevator car safety rail 6 according to Embodiment 1 comprises a first support column 602, a second support column 605, and a car handrail 607. The first support column 602 is erected on the ceiling of the elevator car 1. The second support column 605 is erected on the ceiling of the elevator car 1, horizontally separated from the first support column 602. The car handrail 607 is provided on the first support column 602. The car handrail 607 has a support portion 615 that rests on the second support column 605. The car handrail 607 moves between a handrail installation position where the support portion 615 rests on the second support column 605 and a handrail open position where the support portion 615 is separated upward from the second support column 605. With this configuration, if an object becomes trapped between the tie bar 8 and the upper handrail 607 while the elevator car 1 is descending, the upper handrail 607 moves from the handrail installation position to the handrail release position. This prevents the upper handrail 607 from being damaged when an object becomes trapped between the tie bar 8 and the upper handrail 607. It also prevents the object from remaining trapped between the tie bar 8 and the upper handrail 607.

[0040] Furthermore, the elevator car safety rail 6 according to Embodiment 1 comprises a first support column 603, a second support column 605, a second support column 605, and a car handrail 608. The first support column 603 is erected on the ceiling of the elevator car 1. The second support column 605 is erected on the ceiling of the elevator car 1, horizontally separated from the first support column 602. The car handrail 608 is provided on the first support column 603. The car handrail 608 has a support portion 619 that rests on the second support column 605. The car handrail 608 moves between a handrail installation position where the support portion 619 rests on the second support column 605 and a handrail open position where the support portion 619 is separated upward from the second support column 605. With this configuration, if an object becomes trapped between the tie bar 8 and the upper handrail 608 while the elevator car 1 is descending, the upper handrail 608 moves from the handrail installation position to the handrail release position. This prevents the upper handrail 608 from being damaged when an object becomes trapped between the tie bar 8 and the upper handrail 608. It also prevents the object from remaining trapped between the tie bar 8 and the upper handrail 608.

[0041] Furthermore, in the elevator car safety railing 6 according to Embodiment 1, the second support column 605 has a base portion 621 on which the hook portion 615 is placed, and wall portions 622 and 623 that protrude upward from the base portion 621. The wall portions 622 and 623 are spaced apart from each other in the width direction of the car handrail 607. When the hook portion 615 is placed on the base portion 621, the hook portion 615 is positioned between the wall portions 622 and 623. With this configuration, when the position of the car handrail 607 is the handrail installation position, it is possible to restrict the movement of the car handrail 607 relative to the second support column 605 in the width direction of the car handrail 607.

[0042] Furthermore, in the elevator car safety railing 6 according to Embodiment 1, the second support column 605 has a base 621 on which the hook portion 619 is placed, and wall portions 622 and 623 that protrude upward from the base 621. The wall portions 622 and 623 are spaced apart from each other in the width direction of the car handrail 608. When the hook portion 619 is placed on the base 621, the hook portion 619 is positioned between the wall portions 622 and 623. With this configuration, when the position of the car handrail 608 is the handrail installation position, it is possible to restrict the movement of the car handrail 608 relative to the second support column 605 in the width direction of the car handrail 608.

[0043] Furthermore, in the elevator car safety railing 6 according to Embodiment 1, the car handrail 607 is attached to the first support column 602 via a hinge 613. The car handrail 607 moves between the handrail installation position and the handrail open position by rotating around the pivot axis of the hinge 613. With this configuration, the car handrail 607 can be moved between the handrail installation position and the handrail open position with a simple configuration.

[0044] Furthermore, in the elevator car safety railing 6 according to Embodiment 1, the car handrail 608 is attached to the first support column 603 via a hinge 617. The car handrail 608 moves between the handrail installation position and the handrail open position by rotating around the pivot axis of the hinge 617. With this configuration, the car handrail 608 can be moved between the handrail installation position and the handrail open position with a simple configuration.

[0045] In the first embodiment of the elevator car safety railing 6, the configuration described was one in which the second support column 605 is located between the first support column 602 and the first support column 603. However, the second support column 605 may also be located between the first support column 601 and the first support column 602. In this case, the car handrail 607 is provided on the first support column 601, and the car handrail 608 is provided on the first support column 602. Alternatively, the second support column 605 may be located between the first support column 603 and the first support column 604. In this case, the car handrail 607 is provided on the first support column 603, and the car handrail 608 is provided on the first support column 604. Alternatively, the second support column 605 may be located between the first support column 604 and the first support column 601. In this case, the elevator handrail 607 is provided on the first support column 604, and the elevator handrail 608 is provided on the first support column 601.

[0046] Furthermore, in the elevator car safety rail 6 according to Embodiment 1, a configuration was described in which the car handrail 607 is attached to the first support column 602 via a hinge 613, and the car handrail 608 is attached to the first support column 603 via a hinge 617. However, for example, the car handrail 607 may be attached to the first support column 602 via an elastic member, and the car handrail 608 may be attached to the first support column 603 via an elastic member. Even in this case, each of the car handrails 607 and 608 can move between the handrail installation position and the handrail open position. An example of an elastic member is a leaf spring.

[0047] Although the elevator car safety fence 6 according to the preferred embodiment 1 has been described above, the elevator car safety fence 6 is not limited to the embodiment 1 described above. Various modifications and transformations can be made to the elevator car safety fence 6 according to embodiment 1 described above without departing from the scope of the claims. [Explanation of symbols]

[0048] 1 Elevator car, 2 Main rope, 3 Counterweight, 4 Hoisting machine, 5 Deflection wheel, 6 Safety fence above the car, 7 Guide rail for counterweight, 8 Tie bar, 9 Hoistway, 601 First support, 602 First support, 603 First support, 604 First support, 605 Second support, 606 Handrail above the car, 607 Handrail above the car, 608 Handrail above the car, 609 Handrail above the car, 610 Connecting member, 611 Connecting member, 612 Connecting member, 613 Hinge, 614 Mounting part, 615 Receiving part, 616 Handrail body, 617 Hinge, 618 Mounting part, 619 Receiving part, 620 Handrail body, 621 Base, 622 Wall part, 623 Wall part, 624 Through hole.

Claims

1. A first support column erected on the ceiling of an elevator car that moves up and down within a hoistway, A second support column is erected on the ceiling, separated horizontally from the first support column, The handrail for the elevator car is provided on the first support column, Equipped with, The first and second support columns are erected in the depth direction of the elevator car on the side of the ceiling opposite to the landing. The aforementioned handrail for the elevator car has a resting portion that is placed on the second support column, The aforementioned elevator car handrail is an elevator car safety fence that moves between a handrail installation position in which the attachment portion rests on the second support column and a handrail open position in which the attachment portion is separated upward from the second support column, on the opposite side of the landing in the depth direction.

2. The second support column is, The base on which the aforementioned mounting portion is placed, A pair of wall portions protruding upward from the base, It has, The pair of wall sections are arranged apart from each other in the width direction of the handrail of the elevator car. The elevator car safety railing according to claim 1, wherein the support portion is positioned between the pair of wall portions when the support portion is placed on the base portion.

3. The aforementioned handrail for the elevator car is attached to the first support column via a hinge, The elevator car safety railing according to claim 1 or claim 2, wherein the handrail above the car rotates around the pivot axis of the hinge, causing the handrail above the car to move between the handrail installation position and the handrail open position.

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