Elevator pit entry / exit method and elevator

Abstract

The present invention provides an elevator pit entry / exit method including steps described in (1) to (4) below. (1) A step for moving a boarding car to the pit. (2) A step for opening an entrance / exit by removing a side panel on a surface of the boarding car that opposes a portion between a pair of weight-side guide rails that guide a counterweight. (3) A step for installing a ladder from the entrance / exit of the boarding car toward a space formed in the portion between the pair of weight-side guide rails. (4) A step for entering / exiting the pit from the entrance / exit via the ladder.

Description

Elevator pit entry and exit method and elevator

[0001] The present invention relates to a method for an elevator to enter and exit a pit and to an elevator.

[0002] A pit is located at the bottom of the elevator shaft where the elevator car moves up and down. During maintenance and inspections, workers enter and exit this pit to perform various tasks. Technology has also been proposed to allow workers to enter and exit the pit safely.

[0003] An example of such a technology is described in Patent Document 1. Patent Document 1 describes a technology for ensuring a work space large enough to accommodate at least the body of an inspection worker between the pit wall opposite the entrance / exit of the car and the side of the car lowered into the pit. After the inspection worker boards the car from the platform, the car is lowered into the pit and stops at a predetermined height, after which the inspection worker steps out of the car's entrance / exit into the work space. Then, after completing the inspection work, the inspection worker boards the car from within the work space and rides the car back to the platform.

[0004] JP 2017-100845 A

[0005] However, the technology described in Patent Document 1 has a problem in that it requires space for workers to enter and exit the hoistway, which increases the dimensions of the hoistway.

[0006] Furthermore, conventionally, when workers enter and exit the pit, they use a ladder or pit ramp attached to the hatch sill at the entrance to the loading and unloading area. However, with a pit ramp or ladder, workers have to lean over the entrance to the loading and unloading area to place their feet, and there is no place to attach a safety harness hook. For this reason, in recent years, there has been a demand for a safer way for workers to enter and exit the pit.

[0007] In consideration of the above problems, the present invention aims to provide an elevator and a method for pit entry and exit that prevent the dimensions of the elevator shaft from increasing and allow workers to enter and exit the pit safely.

[0008] In order to solve the above problems and achieve the object, the method for elevator pit entry and exit is a method for an elevator having a car that moves up and down in a hoistway and a counterweight connected to the car via a main rope. The method includes the following steps (1) to (4): (1) a step of moving the car to the pit; (2) a step of removing a side panel on the surface facing the space between a pair of weight-side guide rails that guide the counterweight in the car, thereby opening an entry / exit; (3) a step of installing a ladder from the entry / exit of the car toward the space formed between the pair of weight-side guide rails; and (4) a step of entering and exiting the pit from the entry / exit via the ladder.

[0009] The elevator also includes a car that moves up and down the elevator shaft, a counterweight connected to the car via a main rope, and a pair of weight-side guide rails that guide the counterweight. The side panels of the car facing the space between the pair of weight-side guide rails are detachably arranged. An entrance / exit where a ladder can be installed is formed where the side panels of the car are removed.

[0010] The elevator pit entry / exit method and elevator configured as described above allow workers to enter and exit the pit safely.

[0011] 1 is a schematic diagram showing an elevator with a machine room according to an example embodiment. FIG. 2 is a schematic diagram showing an elevator without a machine room according to an example embodiment. FIG. 3 is a plan view showing an example of an elevator with a machine room according to an example embodiment. FIG. 4 is a plan view showing an example of an elevator without a machine room according to an example embodiment. FIG. 5 is a plan view showing another example of an elevator with a machine room according to an example embodiment. FIG. 6 is a plan view showing another example of an elevator without a machine room according to an example embodiment. FIG. 7 is a rear view of an elevator car according to an example embodiment, viewed from the rear side. FIG. 8 is a rear view showing a state in which the rear panel of the elevator car according to an example embodiment has been removed. FIG. 9 is a diagram showing a state in which a worker enters and exits a pit in an elevator according to an example embodiment. FIG. 10 is a diagram showing a state in which a worker enters and exits a pit in an elevator according to an example embodiment. FIG. 11 is a rear view of another example of an elevator car according to an example embodiment, viewed from the rear side. FIG. 12 is a front view of an example of an entrance and exit of a landing in an elevator according to an example embodiment, viewed from the hoistway side. FIG. 13 is a front view showing a front portion of an elevator car according to an example embodiment. FIG. 14 is a front view showing a state in which an opening cover has been removed from the front portion of the elevator car according to an example embodiment. FIG. 15 is a diagram showing a fixing operation of a car in an elevator according to an example embodiment. 10 is a front view of another example of an entrance / exit of a landing in the elevator according to the embodiment, as viewed from the hoistway side; FIG. 11 is a view showing a fixing operation of the elevator car according to the embodiment;

[0012] Hereinafter, an embodiment of an elevator will be described with reference to Figures 1 to 17. Note that common members in each figure are given the same reference numerals.

[0013] 1. Example of embodiment 1-1. Elevator with machine room First, the configuration of an elevator with a machine room according to an example of embodiment (hereinafter referred to as "this example") will be described with reference to Figures 1 and 3. Figure 1 is a schematic diagram showing the elevator. Figure 3 is a plan view showing the elevator.

[0014] The elevator 1 shown in Figure 1 is an elevator in which a machine room 160 is provided at the top of a hoistway 110. A pit 111 is provided at the bottom of the hoistway 110. A buffer and the like (not shown) are arranged in the pit 111.

[0015] As shown in Fig. 1, elevator 1 has a hoist 100 installed in a machine room 160, a car 120 for carrying people and luggage, a counterweight 140, and a main rope 130. Elevator 1 also has a control panel 190 installed in the machine room 160. Furthermore, as shown in Fig. 3, elevator 1 has car-side guide rails 191, 191 that guide car 120, and weight-side guide rails 192, 192 that guide counterweight 140. A landing 201 is installed at a floor in the building structure where car 120 stops.

[0016] The car 120 is formed in a hollow, approximately rectangular parallelepiped shape. The car 120 moves up and down in the hoistway 110 along car-side guide rails 191, 191. The car-side guide rails 191, 191 are arranged on both sides of the car 110. The car-side guide rails 191, 191 are erected in the hoistway 110. A car-side door is installed on a front portion 122 of the car 120 that faces the boarding and alighting area 201. One end of a main rope 130 is fixed to the top of the car 120.

[0017] The main rope 130 is wound around a sheave of the hoisting machine 100 installed in the machine room 160. A deflector sheave 150 is also arranged near the hoisting machine 100 in the machine room 160. The main rope 130 wound around the sheave of the hoisting machine 100 is then installed on the deflector sheave 150.

[0018] The other end of the main rope 130 is fixed to a counterweight 140. The counterweight 140 moves up and down within the hoistway 110 along counterweight-side guide rails 192, 192. The counterweight-side guide rails 192, 192 are disposed on both sides of the counterweight 140. The counterweight-side guide rails 192, 192 are erected within the hoistway 110.

[0019] 1-2. Machine Room-less Elevator Next, the configuration of a machine room-less elevator will be explained with reference to Figures 2 and 4. Figure 2 is a schematic diagram showing the elevator. Figure 4 is a plan view showing the elevator. Note that parts common to the machine room-equipped elevator 1 shown in Figures 1 and 3 are given the same reference numerals, and duplicate explanations will be omitted.

[0020] The elevator 1B shown in Fig. 2 is an elevator that does not have a machine room 160 at the top of the hoistway 110. A pit 111 is provided at the bottom of the hoistway 110. As shown in Fig. 2, the elevator 1B has a hoisting machine 100 installed in the hoistway 110 or the pit 111, a car 120, a main rope 130, and a counterweight 140. The elevator 1B also has a first pulley 171 and a second pulley 172. Furthermore, as shown in Fig. 4, the elevator 1B has car-side guide rails 191, 191 and counterweight-side guide rails 192, 192.

[0021] A car-side pulley 121 is provided at the bottom of the car 120. The counterweight 140 has a weight-side pulley 141. A main rope 130 is wound around the car-side pulley 121 and the weight-side pulley 141.

[0022] The first pulley 171 and the second pulley 172 are installed on a machine beam 180 installed at the top of the hoistway 110. One end 131 and the other end 132 of the main rope 130 are fixed to the top of the hoistway 110. The main rope 130 is then wound from the other end 132 around the car-side pulley 121, the first pulley 171, the sheave of the hoisting machine 100, the second pulley 172, and the weight-side pulley 141 in this order.

[0023] The hoisting machine 100 may be installed on a machine beam 180 installed at the top of the elevator shaft 110. The hoisting machine 100 of the machine room-less elevator 1B is thinner than the hoisting machine 100 of the machine room-equipped elevator 1.

[0024] 1-3. Plan views of elevators Next, the plan views of the machine room elevator 1 and the machine room-less elevator 1B will be described with reference to Figures 3 to 6. Figure 3 is a plan view showing the machine room elevator 1, and Figure 4 is a plan view showing the machine room-less elevator 1B.

[0025] As shown in Fig. 3 , a ladder storage section 11 is provided in a rear section 123 opposite to a front section 122 of the car 120. The ladder storage section 11 stores a ladder 10 used by a worker M1 to enter and exit the pit 111. In addition, in the elevator 1 shown in Fig. 3 , a pair of weight-side guide rails 192, 192 are arranged between the rear section 123 of the car 120 and the hoistway 110. The counterweight 140 is movably supported on the weight-side guide rails 192, 192. Therefore, the counterweight 140 passes between the rear section 123 of the car 120 and the wall surface of the hoistway 110, similar to the elevator 1 shown in Fig. 3 .

[0026] As shown in Figure 4, even in the machine room-less elevator 1B, a pair of weight-side guide rails 192, 192 are arranged between the rear surface 123 of the car 120 and the hoistway 110. Therefore, the counterweight 140 passes between the rear surface 123 of the car 120 and the wall surface of the hoistway 110.

[0027] Fig. 5 is a plan view showing another example of an elevator with a machine room, and Fig. 6 is a plan view showing another example of an elevator without a machine room. In the elevator 1C shown in Fig. 5, a pair of weight-side guide rails 192, 192 are arranged between the hoistway 110 and a side surface 124 that connects the front surface 122 and the rear surface 123 of the car 120 and is connected approximately perpendicular to the front surface 122 and the rear surface 123. Therefore, the counterweight 140 passes between the wall surface of the side surface 124 of the car 120 and the hoistway 110.

[0028] In the elevator 1D shown in Fig. 6, a pair of weight-side guide rails 192, 192 and a hoist 100 are arranged between the side surface 124 of the car 120 and the hoistway 110. Therefore, the counterweight 140 passes between the wall surface of the side surface 124 of the car 120 and the hoistway 110, similar to the elevator 1C shown in Fig. 5.

[0029] 2. How to enter and exit the pit 2-1. Ladder installation position Next, we will explain how to enter and exit the pit 111 in the elevators 1, 1B, 1C, and 1D having the above-mentioned configuration. First, we will explain the installation position of the ladder 10 with reference to Figures 3 to 6.

[0030] When worker M1 enters or leaves the pit, car 120 is placed in pit 111 at the bottom of elevator shaft 110. Therefore, counterweight 140 is placed at the top of elevator shaft 110. Therefore, as shown in Figures 3 to 6, when entering or leaving the pit, space Q1 is formed between the pair of weight-side guide rails 192, 192. In the pit entry and exit method of this example, ladder 10 is placed in this space Q1.

[0031] 3 and 4, in the case of elevators 1 and 1B in which the counterweight 140 passes between the rear surface 123 of the car 120 and the elevator shaft 110, the ladder 10 is installed on the rear surface 123 of the car 120. The ladder 10 is then installed from the rear surface 123 of the car 10 to the space Q1 formed between the weight-side guide rails 192, 192.

[0032] 5 and 6, in the case of elevators 1 and 1B in which the counterweight 140 passes between the side surface 124 of the car 120 and the elevator shaft 110, the ladder 10 is installed on the side surface 124 of the car 120. The ladder 10 is installed from the side surface 124 of the car 10 to the space Q1 formed between the weight-side guide rails 192, 192.

[0033] In this way, according to the pit entry / exit method of this example, by installing the ladder 10 in the space Q1 between the weight-side guide rails 192, 192, it is not necessary to provide additional space for installing the ladder 10 within the hoistway 110. As a result, it is possible to prevent the dimensions of the hoistway 110 from expanding.

[0034] 2-2. Car Configuration Next, the detailed configuration of the car 120 used in the above-described pit entry / exit method will be described with reference to Figures 7 to 9. Note that the following description will be directed to the car 120 of the elevators 1 and 1B in which the counterweight 140 passes between the rear portion 123 of the car 120 and the hoistway 110. Figure 7 is a rear view of the car 120 as seen from the rear side. Figure 8 is a rear view showing the state in which the side panel 123a of the car 120 has been removed. Figure 9 is a diagram showing the state in which workers enter and exit the pit.

[0035] As shown in Figure 7, handrails 127 are installed inside the car interior of the car 120. In addition, a ladder storage section 11 for storing the ladder 10 is provided on the rear surface 123 of the car 120. By providing the ladder storage section 11 in the car 120 and installing the ladder 10 in the car 120 in advance, the labor required to carry the ladder 10 into the building structure in which the elevator is installed can be eliminated during maintenance and inspection. Furthermore, by locating the ladder storage section 11 near the entrance / exit 123b (described later), the installation work of the ladder 10 can be easily performed.

[0036] Furthermore, the rear surface 123 of the car 120 has a plurality of side plates 123a. At least one of the plurality of side plates 123a is detachably installed on the rear surface 123. As shown in Fig. 8 , by removing the side plate 123a, an entrance / exit 123b through which the worker M1 can enter and exit is formed in the rear surface 123 of the car 120.

[0037] 9, a ladder 10 is installed at the entrance / exit 123b. By providing a location for installing the ladder 10 on the car 120 in this way, it is possible to safely descend from the car 120 to the pit 111. In addition, a safety belt hook 20 is detachably attached to the handrail 127 of the car 120. The safety belt hook 20 and worker M1 are connected by a safety belt 21.

[0038] 7 to 9, an example has been described in which the entrance / exit 123b opens continuously from the top to the bottom in the vertical direction of the rear surface portion 123, but the present invention is not limited to this. For example, only the bottom part in the vertical direction of the side plate 123a may be configured to be detachable, and the entrance / exit 123b may open only in the bottom part in the vertical direction of the rear surface portion 123.

[0039] 7 to 9, an example has been described in which the entrance / exit 123b is formed in the rear surface 123 of the car 120, but the present invention is not limited to this. For example, in the case of an elevator in which the counterweight 140 passes between the side surface 124 of the car 120 and the hoistway 110, as in the elevators 1C and 1D shown in the above-mentioned FIGS. 5 and 6, the entrance / exit 123b is formed in the side surface 124 of the car 120. In other words, the side panels that constitute the side surface 124 of the car 120 are installed in a detachable manner.

[0040] 9 and 10, a method of entering and exiting the pit 111 will be described. FIG. 10 is a diagram showing the state in which the worker M1 enters and exits the pit 111.

[0041] First, as shown in Figure 10, the car 120 is moved to the pit 111 of the elevator shaft 110. As described above, the counterweight 140 moves to the top, and a space Q1 is formed between the pair of weight-side guide rails 192, 192 (see Figures 3 and 4). Next, as shown in Figures 8 and 9, the worker M1 removes the side panel 123a from the rear portion 123 of the car 120. As a result, an entrance / exit 123b opens in the rear portion 123 of the car 120.

[0042] Next, as shown in Figures 9 and 10, worker M1 places the ladder 10 stored in the ladder storage section 11 from the entrance / exit 123b toward the space Q1 (see Figures 3 and 4) formed between the pair of weight-side guide rails 192, 192. Then, worker M1 enters / exits the pit 111 via the ladder 10 from the entrance / exit 123b of the car 120. Here, when worker M1 exits the car 120 from the entrance / exit 123b, as shown in Figure 9, the safety belt hook 20 is hooked to the handrail 127 of the car 120. This allows worker M1 to safely enter / exit the pit 111 from the car 120.

[0043] 10, the weight-side guide rail 192 is installed in the elevator shaft 110 via a rail bracket 194. A connecting rod 196 is fixed to the rail bracket 194. The connecting rod 196 extends vertically upward from the bottom surface of the pit 111.

[0044] The worker M1, who has exited the car 120 through the entrance / exit 123b of the car 120, transfers the safety belt hook 20 from the handrail 127 to the connecting rod 196. By installing the connecting rod 196 to which the safety belt hook 20 is attached in this manner near the weight-side guide rail 192 and the entrance / exit 123b, the work of transferring the safety belt hook 20 can be easily performed. This allows the worker M1 to descend into the pit 111 more safely. Then, by the above-mentioned process, the work of the worker M1 entering and exiting the pit 111 is completed.

[0045] 2-4. Another example of the car Next, another example of the car will be described with reference to Fig. 11. Fig. 11 is a rear view of the other example of the car as seen from the rear side.

[0046] In the car 120 shown in Figures 7 to 9, an example has been described in which the entrance / exit 123b is formed in the center of the rear portion 123 in the width direction, but this is not limited to this. In the car 120B shown in Figure 11, one of the side plates 123a constituting the rear portion 123 in the width direction is configured to be detachable. Therefore, the entrance / exit 123b opening into the rear portion 123 is formed on one side of the rear portion 123 in the width direction. The position of the entrance / exit 123b is appropriately set depending on the positions of the pair of weight-side guide rails 192, 192. In other words, the entrance / exit 123b is formed in the car 120 at a position facing the space between the pair of weight-side guide rails 192, 192.

[0047] 3. Method of Stopping the Car In order for the worker M1 to work in the pit 111 more safely, it is preferable to reliably stop the movement of the car 120 and the counterweight 140. Next, a method of stopping the car 120 will be described with reference to Figures 12 to 17.

[0048] Fig. 12 is a front view of an example of a landing entrance / exit seen from the elevator shaft side. As shown in Fig. 12, a landing door 202 is installed at the landing entrance / exit so that it can be opened and closed. The entrance / exit is also provided with a door pocket 203 that supports the landing door 202 so that it can be opened and closed, a hatch sill 204 along which the landing door 202 slides, and a toe guard 211. The door pocket 203 is installed at the top of the landing door 202 in the vertical direction, and the hatch sill 204 is installed at the bottom end of the landing door 202 in the vertical direction.

[0049] The toe guard 211 is fixed to the hatch sill 204. The toe guard 211 hangs down in the vertical direction from the hatch sill 204. The toe guard 211 faces the pit wall 110a (see FIG. 15) of the elevator shaft 110. The toe guard 211 has a stopper hole 211a into which the stopper pin 30 can be inserted.

[0050] 13 and 14 are front views showing the front portion 122 of the car 120. As shown in Fig. 13 and 14, the front portion 122 of the car 120 has a front side plate 122a on which an operation panel 129 is installed. A detachable opening cover 122b is installed at the bottom in the vertical direction of the front side plate 122a. Then, as shown in Fig. 14, by removing the opening cover 122b, an opening window 122c is opened at the bottom of the front side plate 122a. A stopper pin 30, which will be described later, is inserted through this opening window 122c.

[0051] Next, the work of fixing the car 120 will be described with reference to FIG. 15 . FIG. 15 is a diagram illustrating the work of fixing the car 120. First, as shown in FIG. 15 , the car 120 is moved to a position where the opening window 122c of the car 120 faces the toe guard 211. Next, as shown in FIG. 14 , the worker M2 removes the opening cover 122b to open the opening window 122c. Then, the worker M2 inserts the stopper pin 30 from inside the car 120 through the opening window 122c into the stopper hole 211a provided in the toe guard 211. This completes the work of fixing the car 120. By inserting the stopper pin 30 from the car 120 into the toe guard 211 in this way, the lifting and lowering movement of the car 120 and the counterweight 140 is restricted. As a result, the car 120 and the counterweight 140 can be prevented from moving against the intentions of the workers M1 and M2, and work within the pit 111 can be carried out more safely.

[0052] Next, another example of the car fixing work will be described with reference to Fig. 16 and Fig. 17. Fig. 16 is a front view of another example of the entrance / exit of the boarding / deboarding area as seen from the hoistway side. Fig. 17 is a diagram showing another example of the car fixing work.

[0053] As shown in Figures 16 and 17, a stopper bracket 300 is disposed at the bottom in the vertical direction of the toe guard 211. The stopper bracket 300 is fixed to the pit wall 110a of the elevator shaft 110 via fixing bolts 56. The stopper bracket 300 has an insertion portion 301 and a fixing portion 302. The insertion portion 301 has a stopper hole 301a into which the stopper pin 30 can be inserted. The fixing portions 302 are disposed on both sides of the insertion portion 301 in the width direction. Fixing bolts 56 for fixing the bracket to the pit wall 110a are inserted into the fixing portion 302.

[0054] In the case of an elevator equipped with such a stopper bracket 300, as shown in FIG. 17 , the car 120 is moved to a position where the opening window 122c of the car 120 faces the stopper bracket 300. Then, worker M2 inserts the stopper hole 301a provided in the stopper bracket 300 from inside the car 120 through the opening window 122c. This completes the work of fixing the car 120. In the case of the fixing method using the stopper bracket 300 shown in FIGS. 16 and 17 , the car 120 can be fixed at a deeper position in the pit 111 than in the example shown in FIG. 15 . Therefore, this method is effective for pits 111 that are deeper than the example shown in FIG. 15 .

[0055] The stopper pin 30 may be provided in advance in the car 120, or may be prepared by the workers M1 and M2 during maintenance and inspection. Furthermore, an existing maintenance part such as a maintenance operation protector may be used as the stopper pin 30. The maintenance operation protector is a component that ensures a gap between the top of the car 120 and the ceiling of the hoistway 110 when a worker sits on top of the car to perform work. The maintenance operation protector is installed on top of a shock absorber (buffer) that is disposed below the counterweight 140. The maintenance operation protector can prevent the counterweight 140 from descending, and can ensure a gap between the top of the car 120 and the ceiling of the hoistway 110.

[0056] The present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made within the scope of the invention as set forth in the claims.

[0057] In this specification, the words "parallel" and "orthogonal" are used, but these do not mean only "parallel" and "orthogonal" in the strict sense, but also include "parallel" and "orthogonal" and may also mean a "substantially parallel" or "substantially orthogonal" state within a range in which the functions can be exerted.

[0058] DESCRIPTION OF SYMBOLS 1, 1B, 1C, 1D...Elevator, 10...Ladder, 11...Ladder storage section, 20...Safety belt hook, 21...Safety belt, 30...Stopper pin, 100...Hoistway, 110...Hoistway, 110a...Pit wall, 111...Pit, 120...Cab, 121...Cab side pulley, 122...Front section, 122a...Front side plate, 122b...Opening cover, 122c...Opening window, 123...Rear section, 123a...Side plate, 123b...Inlet / outlet, 124...Side section, 127...Handrail, 129...Operation panel, 130...Main rope, 131...One end, 132...Other end, 140...Counterweight, 141...Weight side pulley, DESCRIPTION OF SYMBOLS 150... Deflector, 160... Machine room, 171... First pulley, 172... Second pulley, 180... Machine beam, 190... Control panel, 191... Cage side guide rail, 192... Weight side guide rail, 194... Rail bracket, 196... Connecting rod, 201... Boarding and alighting platform, 202... Alighting platform door, 203... Door pocket, 204... Hatch sill, 211... Toe guard, 211a... Stopper hole, 300... Stopper bracket, 301... Insertion part, 301a... Stopper hole, 302... Fixing part, M1, M2... Worker, Q1... Space

Claims

1. A method for an elevator to enter and exit a pit, the method having a car that moves up and down a hoistway and a counterweight connected to the car via a main rope, comprising the steps of: moving the car to the pit; removing a side panel on the surface of the car that faces between a pair of weight-side guide rails that guide the counterweight, to open an entrance / exit; installing a ladder from the front entrance exit of the car towards the space formed between the pair of weight-side guide rails; and entering and exiting the elevator from the entrance / exit via the ladder into the pit.

2. A method for entering and exiting an elevator pit as described in claim 1, wherein when exiting the elevator car from the entrance, a safety belt hook connected to the worker via a safety belt is hung on a handrail provided on the elevator car.

3. A method for elevators entering and exiting a pit as described in claim 2, wherein a connecting rod extending vertically upward from the bottom surface of the pit is provided on a rail bracket which installs the weight-side guide rail in the hoistway, and the safety belt hook is removably attached to the connecting rod.

4. A method for moving an elevator into and out of a pit as described in claim 1, further comprising the step of inserting a stopper pin from the car into a stopper hole provided in the elevator shaft after the car has moved to the pit, thereby restricting movement of the car and the counterweight.

5. A method for elevators entering and exiting a pit as described in claim 1, in which the ladder is stored in a ladder storage section provided in the elevator car.

6. An elevator comprising: a car that moves up and down in a hoistway; a counterweight connected to the car via a main rope; and a pair of weight-side guide rails that guide the counterweight, wherein a side panel of the car facing the space between the pair of weight-side guide rails is removably arranged, and an entrance / exit where a ladder can be installed is formed at the location where the side panel of the car is removed.

Images