elevator equipment

Abstract

To provide an elevator device which can store, on a car, a pit ladder having struts and steps supported between the strut and the strut irrespective of the arrangement of equipment provided on the car.SOLUTION: An elevator device comprises a pit ladder 3 which allows movement between a pit of an elevator hoistway having a pair of struts and steps supported between the pair of struts and a car 2 of the elevator, a hinge which can fold the pit ladder 3 in the longitudinal direction, a car upper handrail 1 of the elevator having upper sash bars 100, 101, 102, and vertical sash bars 110, 111, 112, 113 which support the upper sash bars 100, 101, 102, and a fastening unit which can fasten the pit ladder 3 detachably, and the pit ladder 3 is arranged so that the length direction is horizontal and the steps are vertical when stored, and is removed from the fastening unit and arranged on the outer surface of the car 2 when in use.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an elevator system having an elevator shaft pit ladder and a handrail on the car. [Background technology]

[0002] In a conventional elevator system, a car that moves up and down in a hoistway is provided with a pit ladder that allows passengers to descend from the car to the pit via the outer surface of the car (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 10-25070 Summary of the Invention [Problem to be solved by the invention]

[0004] When using a pit ladder on a car, storing the pit ladder on the car is convenient because it eliminates the hassle of transporting it. When using a rope ladder as a pit ladder, it can be folded compactly, making it easy to store on the car, but it reduces stability when workers ascend and descend. Therefore, using a pit ladder with supports and steps supported between the supports increases stability when workers ascend and descend, but requires more space to store the pit ladder. Meanwhile, since many pieces of equipment are located on the car, it is difficult to secure space to store the pit ladder. Therefore, pit ladders are stored elsewhere than on the car, but this requires the time and effort of transporting them from their storage location to the car when in use and then returning them to their storage location after use.

[0005] This invention has been made to solve the above-mentioned problems, and its purpose is to provide an elevator device that can store a pit ladder having supports and steps supported between the supports on the car regardless of the arrangement of equipment installed on the car. [Means for solving the problem]

[0006] The elevator device of this invention comprises a pit ladder which has a pair of support pillars and steps supported between the pair of support pillars and which allows movement between the elevator car and the pit of the elevator hoistway, a hinge which allows the pit ladder to be folded longitudinally, an elevator car handrail which has an upper rail and vertical bars supporting the upper rail, and fastening parts which are provided on the upper rail and vertical bars and which allow the pit ladder to be fastened detachably, and when stored, the pit ladder is arranged so that its longitudinal direction is horizontal and its steps are vertical, and when viewed from the vertical direction, the support pillars are arranged along the upper rail and are fastened to the upper rail and vertical bars via the fastening parts, and when in use, it is removed from the fastening parts and placed on the outer surface of the car. [Effects of the Invention]

[0007] This invention makes it possible to realize an elevator system in which a pit ladder having steps supported between supports can be stored on the car regardless of the arrangement of equipment provided on the car. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view showing an elevator apparatus (as a whole) according to embodiment 1 of the present invention when the pit ladder is stored. [Figure 2] 2 is a perspective view showing a main part of the elevator apparatus of FIG. 1 according to a first embodiment of the present invention. [Figure 3] 3 is a plan view showing the elevator apparatus of FIG. 2 according to embodiment 1 of the present invention. FIG. [Figure 4] 3 is a side view showing a main part of the elevator apparatus of FIG. 2 according to Embodiment 1 of the present invention. FIG. [Figure 5] 3 is a perspective view showing a main part (fastening portion) of the elevator apparatus of FIG. 2 according to Embodiment 1 of the present invention. FIG. [Figure 6] FIG. 10 is a perspective view showing the elevator apparatus (as a whole) according to embodiment 2 of the present invention when the pit ladder is assembled. [Figure 7] FIG. 10 is a perspective view showing an elevator apparatus (as a whole) according to a second embodiment of the present invention when a pit ladder is in use. [Figure 8] FIG. 8 is a plan view showing the elevator apparatus of FIG. 7 according to a second embodiment of the present invention. [Figure 9] FIG. 8 is a side view showing the elevator apparatus of FIG. 7 according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0009] Embodiment 1 FIG. 1 is a perspective view showing an elevator apparatus (as a whole) according to embodiment 1 of the present invention when the pit ladder is stored. FIG. 2 is a perspective view showing a main part of the elevator apparatus of FIG. 1 according to embodiment 1 of the present invention. FIG. 3 is a plan view showing the elevator apparatus of FIG. 2 according to embodiment 1 of the present invention. FIG. 4 is a side view showing a main part of the elevator apparatus of FIG. 2 according to embodiment 1 of the present invention. FIG. 5 is a perspective view showing a main part (fastening part) of the elevator apparatus of FIG. 2 according to embodiment 1 of the present invention.

[0010] In the figure, the car upper handrail 1 consists of upper rails 100, 101, 102 installed along the outer periphery of the upper part of the car 2, and vertical rails 110, 111, 112, 113 that hold the upper rails 100, 101, 102 horizontally and fix them to the upper part of the car 2. The car upper handrail 1 is always installed above the car 2.

[0011] The pit ladder 3 is made up of a pair of support posts 30 and a plurality of steps 31 supported by being sandwiched between the pair of support posts 30. The support posts 30 are provided with a plurality of hinges 32a, 32b, 32c, 32d, and 32e that enable the pit ladder 3 to be folded.

[0012] When the pit ladder 3 is fastened to the car handrail 1, the hinges 32b and 32d are bent at right angles and positioned near the vertical bars 111 and 112, respectively, when viewed vertically. When viewed vertically, the hinge 32a is positioned midway between one end of the pit ladder 3 and the hinge 32b, when viewed vertically, the hinge 32c is positioned midway between the hinges 32b and 32d, and the hinge 32e is positioned midway between the other end of the pit ladder 3 and the hinge 32c when viewed vertically.

[0013] When stored, the pit ladder 3 is fastened as one of the components that make up the car handrail 1 above the car 2. When the pit ladder 3 is fastened, its appearance is such that its longitudinal direction is horizontal and the steps 31 are each facing vertically (with its longitudinal direction turned sideways and the supports 30 leaning up and down), and it is directly below the upper rails 100, 101, and 102 when viewed horizontally, and the supports 30 are positioned along the inside of the upper rails 100, 101, and 102 when viewed vertically.

[0014] When the pit ladder 3 is fastened to the car handrail 1, the hinges 32a, 32c, and 32e are fastened in an unbent state (the support 30 is straight), and the hinges 32b and 32d are fastened in a bent state at right angles.

[0015] The car upper handrail 1 is provided with fastening parts 4a, 4b, 4c and fastening parts 5a, 5b, 5c, 5d that can fasten the pit ladder 3 to the car upper handrail 1 in a detachable manner.

[0016] The fastening portions 4a, 4b, and 4c are arranged one each in the middle of the upper rails 100, 101, and 102 when viewed vertically, and fasten one support 30 of the pit ladder 3 to the upper rails 100, 101, and 102, respectively.

[0017] The fastening portions 4a, 4b, 4c have one end fixed to the lower end of the upper rails 100, 101, 102, and the other end extending horizontally toward the inside of the car 2 to form L-shaped hook portions 40a, 40b, 40c at the end.

[0018] The hook portions 40a, 40b, and 40c are provided with bolt holes 41a, 41b, and 41c that penetrate horizontally.

[0019] Horizontally penetrating bolt holes 30a, 30b, 30c are provided near the hinges 32a, 32c, 32e of one of the supports 30 of the pit ladder 3, respectively.

[0020] The upper rails 100, 101, and 102 near the fastening portion 4 are provided with bolt holes 100a, 101a, and 102a that penetrate horizontally, respectively.

[0021] When the pit ladder 3 is fastened to the car handrail 1, one of the supports 30 is fixed to the upper rails 100, 101, 102 by passing bolts 41 through bolt holes 41a, 41b, 41c, bolt holes 30a, 30b, 30c, and bolt holes 100a, 101a, 102a, respectively.

[0022] The fastening portions 5a, 5b, 5c, and 5d are arranged one each in the middle of the vertical bars 110, 111, 112, and 113, and fasten the other support 30 of the pit ladder 3 to the vertical bars 110, 111, 112, and 113, respectively.

[0023] The fastening portions 5a, 5b, 5c, and 5d have one end fixed to the middle of the vertical bars 110, 111, 112, and 113, and the other end forms horizontal portions 50a, 50b, 50c, and 50d that extend horizontally along the inside of the upper bars 100, 101, and 102 when viewed vertically.

[0024] The horizontal portions 50a, 50b, 50c, and 50d are provided with bolt holes 51a, 51b, 51c, and 51d that penetrate vertically.

[0025] Vertically penetrating bolt holes 30d, 30e, 30f, and 30g are provided near both ends of the other support 30 of the pit ladder 3 and near the hinges 32b and 32d.

[0026] When the pit ladder 3 is fastened to the car handrail 1, bolts 51 are passed through bolt holes 30d, 30e, 30f, 30g and bolt holes 51a, 51b, 51c, 51d, respectively, and the other support 30 is fixed to the vertical bars 110, 111, 112, 113, respectively.

[0027] Here, we will explain the operation of storing the pit ladder 3 in the car handrail 1 at the top of the car 2. First, while unfolding the pit ladder 3 folded at the hinges 32a, 32b, 32c, 32d, and 32e, we arrange it so that the longitudinal direction is horizontal and the steps 31 are each facing vertically.

[0028] Next, lift up the pit ladder 3 and hang one end of the support 30 on the hook portion 40a. While bending the hinge 32b of the support 30 hung on the hook portion 40a at a right angle, hang the longitudinal direction of the support 30 on the hook portion 40b. While bending the hinge 32d of the support 30 hung on the hook portion 40b at a right angle, hang the other end of the support 30 on the hook portion 40c.

[0029] With one of the supports 30 of the pit ladder 3 hung on the hook portions 40a, 40b, 40c, bolts 41 are passed through the bolt holes 41a, 41b, 41c, the bolt holes 30a, 30b, 30c of the support 30, and the bolt holes 100a, 101a, 102a of the upper rails 100, 101, 102, respectively, and fastened.

[0030] Finally, the other support 30 of the pit ladder 3 is placed on the upper surfaces of the horizontal portions 50a, 50b, 50c, and 50d of the fastening portions 5a, 5b, 5c, and 5d. Bolts 51 are passed through the bolt holes 30d, 30e, 30f, and 30g of the support 30 and the bolt holes 51a, 51b, 51c, and 51d of the fastening portions 5a, 5b, 5c, and 5d, respectively, to fasten the pit ladder 3. This fastens the pit ladder 3 to the car handrail 1 at the top of the car 2 and stores it.

[0031] Furthermore, the hinges 32a, 32c, and 32e are fastened to the fastening parts 4a, 4b, and 4c. Therefore, when the pit ladder 3 is fastened to the car handrail 1, even if a load acts in a direction that bends the hinges 32a, 32c, and 32e, the bending of the hinges 32a, 32c, and 32e is suppressed by the fastening parts 4a, 4b, and 4c.

[0032] The pit ladder 3, which is fastened and stored to the car handrail 1 above the car 2, is removed from the car handrail 1 and placed on the outer surface of the car 2 when in use by releasing the fastening by bolts 41 and 51 at fastening parts 4a, 4b, 4c and fastening parts 5a, 5b, 5c, 5d.

[0033] As described above, according to the first embodiment, the pit ladder 3 is provided with a pair of support columns 30, a step 31 supported between the pair of support columns 30, and a pit of an elevator hoistway, which allows movement between the elevator car 2, hinges 32a, 32b, 32c, 32d, 32e that can fold the pit ladder 3 in the longitudinal direction, an elevator car handrail 1 that has upper crosspieces 100, 101, 102 and vertical crosspieces 110, 111, 112, 113 that support the upper crosspieces 100, 101, 102, and fastening parts 4a, 4b, 4c and fastening parts 5a, 5b, 5c, 5d that are provided on the upper crosspieces 100, 101, 102 and vertical crosspieces 110, 111, 112, 113 and can fasten the pit ladder 3 detachably. When stored, the longitudinal direction is horizontal and the steps 31 are arranged in the vertical direction, and when viewed vertically, the support pillars 30 are arranged along the upper rails 100, 101, 102, and the support pillars 30 are fastened to the upper rails 100, 101, 102 and the vertical rails 110, 111, 112, 113 via fastening parts 4a, 4b, 4c and fastening parts 5a, 5b, 5c, 5d, and when in use, the pit ladder 3 is removed from the fastening parts 4a, 4b, 4c and fastening parts 5a, 5b, 5c, 5d and arranged on the outer surface of the car 2, thereby realizing an elevator device in which a pit ladder 3 having steps 31 supported between the support pillars 30 can be stored on the car 2 regardless of the arrangement of equipment installed on the car 2.

[0034] In addition, the fastening portions 4a, 4b, 4c are provided with hook portions 40a, 40b, 40c that can support the load of the pit ladder 3 when the support 30 is fastened to the upper rails 100, 101, 102.Therefore, when the pit ladder 3 is fastened to the car upper rail 1, the pit ladder 3 is caught on the hook portions 40a, 40b, 40c, so that the pit ladder 3 can be safely fastened to the car upper rail 1.

[0035] Furthermore, when the pit ladder 3 is fastened to the car handrail 1, the pit ladder 3 is fastened to the car handrail 1 via the fastening portions 4a, 4b, 4c and fastening portions 5a, 5b, 5c, 5d at the supports 30, thereby realizing an elevator device in which the pit ladder 3 can be used as a middle rail of the car handrail 1.

[0036] Embodiment 2 Fig. 6 is a perspective view showing an elevator system (as a whole) according to embodiment 2 of the present invention when the pit ladder is assembled. Fig. 7 is a perspective view showing an elevator system (as a whole) according to embodiment 2 of the present invention when the pit ladder is in use. Fig. 8 is a plan view showing the elevator system of Fig. 7 according to embodiment 2 of the present invention. Fig. 9 is a side view showing the elevator system of Fig. 7 according to embodiment 2 of the present invention.

[0037] The figure explains an elevator device according to embodiment 2 of the present invention. The elevator device according to embodiment 2 of the present invention differs in that it is equipped with a guide section 6, which is provided on the outer surface of the car 2 and into which the longitudinal direction of the pit ladder 3 is inserted when the pit ladder 3 is in use, to guide the pit ladder 3 vertically, and a support section 8, which is provided in the pit 7 and into which the lower end of the pit ladder 3 is inserted to support the lower end of the pit ladder 3; other similar parts are denoted by the same symbols and their explanations are omitted.

[0038] When using the pit ladder 3 stored in the car handrail 1, the pit ladder 3 is removed from the car handrail 1, and the removed pit ladder 3 is placed on the outer surface of the car 2 after one end is fixed to the car 2.

[0039] On the other hand, hinges 32a, 32b, 32c, 32d, and 32e are provided on the pit ladder 3. Therefore, when the pit ladder 3 is raised or lowered, the hinges 32a, 32b, 32c, 32d, and 32e may bend, which may cause the pit ladder 3 to behave unstable.

[0040] Therefore, in this embodiment 2, a guide section 6 that guides the pit ladder 3 into the pit 7 and a support section 8 that supports the lower end of the pit ladder 3 in the pit 7 are provided on the outer surface of the elevator car 2.

[0041] The guide parts 6 are fixed in pairs to the outer surface of the car 2, extend vertically, and have a U-shaped cross section. The guide parts 6 are arranged to extend from near the upper end to near the lower end of the outer surface of the car 2.

[0042] When the guide section 6 is viewed vertically, the widthwise shape is formed with a margin of approximately 5 mm to 1 cm to match the shape of the support 30 so that the support 30 of the pit ladder 3 can be inserted vertically and is supported and does not rattle when inserted.

[0043] When viewed from the outer surface of the car 2, the guide sections 6 are arranged parallel to the outer edges of the supports 30 of the pit ladder 3 with their longitudinal directions aligned with each other, and spaced apart from each other to match the width of the pit ladder 3. At this time, the U-shaped openings of the guide sections 6 are arranged facing each other.

[0044] The support part 8 is fixed to the pit 7 at a position where the lower end of the pit ladder 3, which is arranged on the outer surface of the car 2 via the guide part 6, abuts against the pit 7.

[0045] The support portion 8 has a hole portion 80 formed therein into which the lower end portion of the support 30 of the pit ladder 3 is inserted to limit the horizontal movement of the pit ladder 3. When a horizontal load acts on the pit ladder 3, a horizontal load also acts on the lower end portion of the support 30 inserted into the hole portion 80.

[0046] When a horizontal load acts on the lower end of the support 30 inserted into the hole 80, the lower end of the support 30 gets caught in the groove of the hole 80, preventing the lower end of the support 30 from coming off the support part 8.

[0047] Here, we will explain the operation of, when using the pit ladder 3 fastened and stored to the car handrail 1 at the top of the car 2, releasing the fastening of the pit ladder 3 from the car handrail 1 and placing it on the outer surface of the car 2, and fixing the lower end of the pit ladder 3 to the pit 7.

[0048] The pit ladder 3 removed from the car handrail 1 is folded by hinges 32a, 32b, 32c, 32d, and 32e and temporarily placed on the car 2.

[0049] Next, lift up one longitudinal end of the pit ladder 3 that has been temporarily placed on the car 2, and insert one longitudinal end of the pit ladder 3 from directly above the guide part 6 toward the guide part 6. With one end of the inserted pit ladder 3 facing the pit 7, move the support 30 toward the pit 7 while being guided by the guide part 6.

[0050] One end of the pit ladder 3 moved to the pit 7 side is brought into contact with the pit 7, and when the pit ladder 3 is moved to a position where it can be used, the other end of the pit ladder 3 is held by a car frame or the like on the car 2.

[0051] The pit ladder 3, the other end of which is held by the car frame of the car 2, is climbed down to the pit 7, and the lower end of the pit ladder 3 that is in contact with the pit 7 is inserted into the hole 80 of the support part 8. The pit ladder 3 is now ready for use.

[0052] When the pit ladder 3 is placed on the outer surface of the car 2 and used, the hinges 32b, 32c, and 32d are held by the guide portion 6. Therefore, the hinges 32b, 32c, and 32d are prevented from bending, and the pit ladder 3 can be used stably.

[0053] In addition, hinges 32a, 32b or 32d, 32e arranged below the guide portion 6 are not held by the guide portion 6. However, since the lower end of the pit ladder 3 is supported by the support portion 8, horizontal movement of the pit ladder 3 is suppressed when the pit ladder 3 is raised or lowered.

[0054] Therefore, the hinges 32a, 32b or 32d, 32e that are not held by the guide portion 6 are prevented from bending, and the pit ladder 3 can be used stably.

[0055] As described above, according to embodiment 2, the pit ladder 3 having hinges 32a, 32b, 32c, 32d, and 32e can be used stably by providing a guide section 6 on the outer surface of the car 2, into which the longitudinal direction of the pit ladder 3 is inserted when the pit ladder 3 is in use, thereby guiding the pit ladder 3 vertically.

[0056] In addition, by providing a support part 8 that is installed in the pit 7 and supports the horizontal load acting on the lower end of the pit ladder 3, the pit ladder 3 having hinges 32a, 32b, 32c, 32d, and 32e can be used stably even if there are parts that are not guided by the guide part 6.

[0057] Although the pit ladder 3 has five hinges 32a, 32b, 32c, 32d, and 32e, it is not necessary to provide five hinges. For example, by reducing the number of hinges, it can be used more stably. Specifically, it is possible to reduce the number of hinges to at least two, 32b and 32d.

[0058] Furthermore, although the hook portions 40a, 40b, and 40c are provided on the fastening portions 4a, 4b, and 4c, they do not necessarily have to be provided on the fastening portions 4a, 4b, and 4c. For example, it goes without saying that similar actions and effects can be achieved by providing hook portions equivalent to the hook portions 40a, 40b, and 40c on the fastening portions 5a, 5b, 5c, and 5d. [Explanation of symbols]

[0059] 1 handrail above car, 100, 101, 102 upper rail, 110, 111, 112, 113 vertical rail, 2 car, 3 pit ladder, 30 support, 31 step, 32a, 32b, 32c, 32d, 32e hinge, 4a, 4b, 4c, 5a, 5b, 5c, 5d fastening part, 40a, 40b, 40c hook part, 50a, 50b, 50c, 50d horizontal part, 6 guide part, 7 pit, 8 support part, 80 hole part [Industrial Applicability]

[0060] The present invention relates to an elevator system having an elevator shaft pit ladder and a handrail on the car.

Claims

1. a pit ladder having a pair of support columns and steps supported between the pair of support columns, the pit ladder enabling movement between the elevator car and the pit of the elevator hoistway; The elevator car handrail has a hinge that can fold the longitudinal direction of the pit ladder, an upper rail, and a vertical rail that supports the upper rail, and a fastening portion that is provided on the upper rail and the vertical rail and can fasten the pit ladder detachably, The elevator device is characterized in that when the pit ladder is stored, its longitudinal direction is horizontal and the steps are each arranged vertically, and when viewed vertically, the support pillars are arranged along the upper rail, and the support pillars are fastened to the upper rail and the vertical rail via the fastening parts, and when in use, they are removed from the fastening parts and arranged on the outer surface of the car.

2. An elevator apparatus as described in claim 1, characterized in that it is provided on the outer surface of the elevator car and is equipped with a guide portion into which the longitudinal direction of the pit ladder is inserted when the pit ladder is in use, guiding the pit ladder vertically.

3. An elevator device as described in any one of claims 1 to 2, characterized in that it is provided with a support part provided in the pit to support the horizontal load acting on the lower end of the pit ladder.

4. The elevator apparatus according to claim 3, characterized in that the fastening portion is provided with a hook portion capable of supporting the load of the pit ladder when the support pillar is fastened to the upper rail or the vertical rail.

Images