Counterweight clearance measuring device

Abstract

To provide a counterweight clearance measurement device capable of easily measuring a counterweight clearance.SOLUTION: A counterweight clearance measurement device 1 comprises: a guide unit 10 that extends in a Z direction; and a movement unit 20 that has a first portion 21, a second portion 22 disposed below the first portion 21, and a third portion 23 for connecting the first portion 21 and the second portion 22, and is guided by the guide unit 10 and is relatively movable in a vertical direction with respect to the guide unit 10. The measurement device 1 switches a first state in which the first portion 21 is in contact with a shock absorber 105 and a second state in which the first portion 21 is in contact with a counterweight spacer 106 by the movement of the movement unit 20. The measurement device 1 further comprises a measurement unit 30 for measuring the amount of displacement of the second portion 22.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a counterweight clearance measuring device. [Background technology]

[0002] Japanese Patent Application Laid-Open Publication No. 2016-199394 (Patent Document 1) discloses a counterweight clearance measuring device that measures the counterweight clearance between a counterweight spacer and a shock absorber.

[0003] In the measuring device of Patent Document 1, in order to measure the counterweight clearance, the change in length of the telescopic rod section attached to the upper end of the shock absorber and protruding upward is read using a scale attached to the telescopic rod section. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-199394 Summary of the Invention [Problem to be solved by the invention]

[0005] In the measuring device described in Patent Document 1, the worker must read the scale located above the buffer, so a lifting device is required to raise and lower the worker between the buffer installation surface (pit floor) and the upper surface of the buffer, and a fall prevention device is required to prevent the worker from falling. In particular, in high-speed elevators or elevators for high-rise buildings, the buffer height can be as high as 6 m or more, so a relatively large lifting device and fall prevention device are required.

[0006] There is a demand for a measuring device that can measure counterweight clearance more easily than the measuring device described in Patent Document 1.

[0007] A primary object of the present invention is to provide a counterweight clearance measuring device that can easily measure counterweight clearance. [Means for solving the problem]

[0008] A counterweight clearance measuring device according to one embodiment of the present invention includes a guide section extending in the vertical direction, a moving section having a first section, a second section positioned below the first section, and a third section connecting the first and second sections, and being guided by the guide section and movable in the vertical direction relative to the guide section. The measuring device switches between a first state in which the first section is in contact with the shock absorber and a second state in which the first section is in contact with the counterweight spacer by movement of the moving section. The measuring device further includes a measuring section for measuring the displacement of the second section.

[0009] A counterweight clearance measuring device according to another embodiment of the present invention includes a guide portion extending in the vertical direction, a first moving portion having a first portion, a second portion disposed below the first portion, and a third portion connecting the first and second portions, the first moving portion being guided by the guide portion and movable vertically relative to the guide portion, and a second moving portion having a fourth portion, a fifth portion disposed below the fourth portion, and a sixth portion connecting the fourth and fifth portions, the second moving portion being guided by the guide portion and movable vertically relative to the guide portion. The measuring device achieves a state in which the first portion is in contact with the counterweight spacer and the fourth portion is in contact with the shock absorber. The measuring device further includes a measuring portion for measuring the distance between the second and fifth portions in this state. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a counterweight clearance measuring device that can easily measure the counterweight clearance. [Brief explanation of the drawings]

[0011] [Figure 1]1 is a diagram for explaining an elevator apparatus according to an embodiment; [Figure 2] FIG. 2 is a cross-sectional view for explaining a first state of the counterweight clearance measuring device according to the first embodiment. [Figure 3] FIG. 3 is a front view for explaining the counterweight clearance measuring device shown in FIG. 2. [Figure 4] FIG. 4 is a cross-sectional view for explaining a second state of the counterweight clearance measuring device according to the first embodiment. [Figure 5] FIG. 5 is a front view for explaining the counterweight clearance measuring device shown in FIG. 4. [Figure 6] FIG. 10 is a cross-sectional view for explaining a first state of the counterweight clearance measuring device according to the second embodiment. [Figure 7] FIG. 7 is a front view for explaining the counterweight clearance measuring device shown in FIG. 6. [Figure 8] FIG. 10 is a cross-sectional view for explaining a second state of the counterweight clearance measuring device according to the second embodiment. [Figure 9] FIG. 9 is a front view for explaining the counterweight clearance measuring device shown in FIG. 8. [Figure 10] FIG. 10 is a cross-sectional view for explaining a first state of the counterweight clearance measuring device according to the third embodiment. [Figure 11] FIG. 11 is a cross-sectional view for explaining a second state of the counterweight clearance measuring device according to the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that Fig. 1 to Fig. 11 show the Z direction, which is the direction along the up-down direction, and Fig. 2 to Fig. 11 show an orthogonal coordinate system having the X direction, the Y direction, and the Z direction, which are orthogonal to each other.

[0013] Embodiment 1 <Configuration of elevator equipment> As shown in Fig. 1, elevator apparatus 100 according to the first embodiment mainly includes car 101, counterweight 102, rope 103, hoist 104, buffer 105, counterweight spacer 106, and rails 107 (see Fig. 2). Elevator apparatus 100 is an apparatus that moves rope 103 using hoist 204 installed in a machine room 202, and moves car 101 and counterweight 102 attached to both ends of rope 103 along rails 107 (see Fig. 2) that are arranged in hoistway 201 so as to extend in the Z direction.

[0014] The counterweight 102 has a plurality of weight pieces and a frame that holds the plurality of weight pieces.

[0015] The buffer 105 is disposed on the floor of the pit 203 located below the elevator shaft 201. The buffer 105 is, for example, a spring-type or hydraulic buffer. The buffer 105 includes, for example, a buffer section 105A and a base 105B disposed below the buffer section 105A and supporting the buffer section 105A. The base 105B is fixed to the floor of the pit 203. When the counterweight 102 collides with the floor of the pit 203 due to an accident or the like, the buffer 105 absorbs the impact. The distance L1 from the bottom of the pit 203 to the upper surface of the buffer 105 (the upper surface of the buffer section 105A), i.e., the height of the buffer 105, is not particularly limited and may be, for example, 3 m or more, or 6 m or more. In other words, the elevator apparatus 100 may be a so-called high-speed elevator or an elevator for high-rise floors.

[0016] The counterweight spacer 106 is fixed to the bottom of the counterweight 102. The counterweight spacer 106 moves up and down together with the counterweight 102 within the hoistway 201. The counterweight spacer 106 is disposed above the buffer 105. The counterweight spacer 106 is arranged so as to collide with the buffer 105 in an emergency when the counterweight 102 falls below the lowest point that the elevator apparatus 100 reaches during normal operation.

[0017] When the car 101 is stopped at the top floor, the distance L2 in the Z direction between the counterweight spacer 106 and the buffer 105 is the counterweight clearance. The counterweight clearance is set to be longer than the value specified by law.

[0018] <Configuration of the counterweight clearance measurement device> As shown in FIGS. 2 to 5, the counterweight clearance measuring device 1 according to the first embodiment includes a guide unit 10, a moving unit 20, a measuring unit 30, and a level .

[0019] The guide portion 10 extends along the Z direction. The guide portion 10 is provided to guide the movement of the moving portion 20 in the Z direction.

[0020] The moving part 20 has a first part 21, a second part 22, and a third part 23. The first part 21 protrudes from the guide part 10 in the Y direction perpendicular to the Z direction, and is disposed between the shock absorber 105 and the counterweight spacer 106. The second part 22 is disposed below the first part 21. The third part 23 connects the first part 21 and the second part 22. The moving part 20 is guided by the guide part 10 and is disposed so as to move vertically relative to the guide part 10. The first part 21, the second part 22, and the third part 23 move vertically relative to the guide part 10 as a unit.

[0021] In the measuring device 1, the moving part 20 is switched between a first state in which the lower surface of the first part 21 of the moving part 20 is in contact with the upper surface of the buffer 105, and a second state in which the upper surface of the first part 21 is in contact with the lower surface of the counterweight spacer 106.

[0022] The measuring unit 30 is provided to measure the amount of displacement of the second portion 22 of the moving unit 20. The measuring unit 30 may have any configuration for measuring the amount of displacement of the second portion 22 of the moving unit 20, but as an example, it includes a scale (ruler) fixed on the outer circumferential surface of the guide unit 10 for reading the amount of displacement.

[0023] The spirit level 40 is fixed to the guide part 10. The spirit level 40 is provided to measure the horizontality in a direction perpendicular to the extension direction of the guide part 10 and to realize a state in which the guide part 10 is grounded so that its extension direction is along the Z direction.

[0024] In the measuring device 1, the sum of the displacement amount L3 of the first portion 21 of the moving part 20 between the first state and the second state and the width W1 of the first portion 21 in the Z direction is equal to the counterweight clearance L2. Furthermore, in the measuring device 1, the displacement amount L3 of the first portion 21 of the moving part 20 between the first state and the second state (see FIGS. 4 and 5) is equal to the displacement amount L3 of the second portion 22 of the moving part 20 between the first state and the second state. Therefore, the measuring device 1 can measure the sum of the displacement amount L3 of the second portion 22 of the moving part 20 between the first state and the second state and the width W1 of the first portion 21 in the Z direction as the counterweight clearance L2.

[0025] The configuration of the measurement device 1 will be described in more detail below with reference to FIGS.

[0026] The guide part 10 has a cylindrical part 11 that houses the third part 23. The guide part 10 is formed with a first hole 12 that exposes the first part 21 and a second hole 13 that exposes the second part 22. The opening widths of the first hole 12 and the second hole 13 in the Z direction are set to be larger than the counterweight clearance L2. The lower end of the first hole 12 is located below the upper surface of the shock absorber 105. The upper end of the first hole 12 is located above the lower surface of the counterweight spacer 106. The first hole 12 opens, for example, at the upper end surface of the guide part 10. The second hole 13 opens, for example, at the lower end surface of the guide part 10.

[0027] The guide section 10 can be divided into a plurality of sections, for example, in the direction of its extension. The number of sections into which the guide section 10 is divided may be any number, but can be set, for example, so that the total length of the guide section 10 is greater than the height from the floor of the pit 203 to the underside of the counterweight spacer 106, and the length of each of the plurality of sections is less than 1.7 m.

[0028] For example, if the total length of the guide unit 10 is 6 m, the guide unit 10 may be divided into five sections 10A, 10B, 10C, 10D, and 10E. Each of the sections 10A, 10B, 10C, 10D, and 10E has an equal length of, for example, 1.2 m. The guide unit 10 is assembled by connecting the sections 10A, 10B, 10C, 10D, and 10E in this order from above.

[0029] The method for connecting the respective parts is preferably a method that allows the respective parts to be mechanically detachable from each other, such as screwing. In this case, for example, a female thread or a male thread is formed at the lower end of each of the parts 10A, 10B, 10C, and 10D, and a male thread that screws into the female thread or a female thread that screws into the male thread is formed at the upper end of each of the parts 10B, 10C, 10D, and 10E.

[0030] The first hole 12 is formed, for example, only in the portion 10A. The lower end of the first hole 12 is formed closer to the upper end of the portion 10A than the lower end of the portion 10A. The second hole 13 is formed, for example, only in the portion 10E. The upper end of the second hole 13 is formed closer to the lower end of the portion 10E than the upper end of the portion 10E.

[0031] The first portion 21 and the second portion 22 each extend along the Y direction. That is, the first portion 21 and the second portion 22 each extend parallel to each other. The third portion 23 extends along the Z direction. The first portion 21 and the second portion 22 each intersect perpendicularly with the third portion 23.

[0032] The first portion 21 is connected to the upper end of the third portion 23 and protrudes from the upper end in the Y direction. The first portion 21 protrudes from the outer peripheral surface of the first hole 12 to the outside of the guide portion 10. The second portion 22 is connected to the lower end of the third portion 23 and protrudes from the lower end in the Y direction. The second portion 22 protrudes, for example, in the Y direction from the outer peripheral surface of the second hole 13 to the outside of the guide portion 10. The second portion 22 protrudes, for example, in the opposite direction to the first portion 21. Note that the second portion 22 does not have to protrude from the outer peripheral surface of the second hole 13 to the outside of the guide portion 10.

[0033] The third portion 23 is housed inside the cylindrical portion 11 of the guide part 10. In a cross section perpendicular to the Z direction, the maximum width of the third portion 23 is equal to or greater than the minimum width of the inner peripheral surface of the cylindrical portion 11. The third portion 23 is guided by the cylindrical portion 11 of the guide part 10 and is movable relative to the guide part 10 in the up and down direction.

[0034] The third portion 23 is, for example, a rod-shaped member. A rod-shaped member refers to a member whose length in the Z direction is longer than its lengths in the X and Y directions. This rod-shaped member includes a tubular member with a hollow portion formed therein and a solid member without a hollow portion formed therein. The length of the third portion 23 in the Z direction is equal to or less than the height L1 from the floor surface of the pit 203 to the top surface of the shock absorber 105.

[0035] The length of the third portion 23 in the Z direction, i.e., the distance in the Z direction between the first portion 21 and the second portion 22, is set so as not to change when switching between the first state and the second state.

[0036] Like the guide unit 10, the moving unit 20 can be divided into multiple parts. For example, the first part 21 and the second part 22 can be divided into a third part 23, and the third part 23 can be divided into multiple parts in the direction of extension. The moving unit 20 can be divided into any number of parts. The method for connecting the parts together is preferably a method that allows the parts to be mechanically attached and detached from each other, such as screwing.

[0037] The scale of the measuring unit 30 is formed around the second hole 13. The scale is formed on the outer peripheral surface of the portion 10E.

[0038] <Method for measuring counterweight clearance using a measuring device> Next, an example of a method for measuring the counterweight clearance using the measuring device 1 will be described with reference to FIGS.

[0039] First, the measuring device 1 is assembled on the floor of the pit 203 adjacent to the shock absorber 105. Specifically, the guide unit 10 and the moving unit 20, whose third portion 23 is housed in the cylindrical portion 11 of the guide unit 10, are assembled. The guide unit 10 and the moving unit 20 are installed so that the extension directions of the guide unit 10 and the third portion 23 of the moving unit 20 are along the Z direction and the first portion 21 is disposed between the shock absorber 105 and the counterweight spacer 106.

[0040] Next, as shown in FIG. 2, a first state is achieved in which the lower surface of the first portion 21 is in contact with the upper surface of the shock absorber 105. A Z-direction position P1 (hereinafter referred to as the first position) of the second portion 22 in the first state is recorded by an operator. The first position P1 is recorded, for example, as the Z-direction position of the upper surface of the second portion 22. As shown in FIG. 3, the first position P1 is located lower than a Z-direction position P3 (hereinafter referred to as the third position) of the upper surface of the first portion 21 in the first state by the Z-direction length of the third portion 23. Note that the first position P1 may also be recorded as the Z-direction position of the lower surface of the second portion 22. The height of the first position P1 relative to the floor surface of the pit 203 is lower than, for example, the upper surface of the pedestal 105B of the shock absorber 105.

[0041] Next, the moving part 20 moves upward relative to the guide part 10 until the upper surface of the first part 21 contacts the lower surface of the counterweight spacer 106. For example, an operator lifts the moving part 20 upward. In this way, the second state is achieved in which the upper surface of the first part 21 contacts the lower surface of the counterweight spacer 106, as shown in FIG. 4 .

[0042] 4 and 5, a position P2 in the Z direction of the second portion 22 in the second state (hereinafter referred to as the second position) is located higher than the first position P1 by the movement distance of the moving portion 20. A position P4 in the Z direction of the first portion 21 in the second state (hereinafter referred to as the fourth position) is located higher than the third position P3 by the movement distance of the moving portion 20. As a result, the displacement amount L3 of the first portion 21 between the first state and the second state (the distance between the third position P3 and the fourth position P4) becomes equal to the displacement amount L3 of the second portion 22 between the first state and the second state (the distance between the first position P1 and the second position P2).

[0043] 4 and 5, the displacement amount L3 of the second portion 22 between the first state and the second state (the distance between the first position P1 and the second position P2) is measured by an operator. The sum of this displacement amount L3 and the width (thickness) of the first portion 21 in the Z direction is calculated as the counterweight clearance L2.

[0044] As described above, the measuring device 1 can measure the counterweight clearance L2 based on the displacement L3 of the second portion 22 between the first state and the second state. Therefore, in the method of measuring the counterweight clearance using the measuring device 1, the worker does not need to ascend or descend from the floor of the pit 203 to a height that reaches the upper surface of the buffer 105, and therefore the elevating device and the fall prevention device are not required.

[0045] In particular, with the measuring device 1, even if the height of the buffer 105 increases, there is no need to increase the height of the location where the worker must make measurements (i.e., the first position P1 and the second position P2). Specifically, even if the height of the buffer 105 is higher than the height of the worker, by adjusting only the Z-direction length of the guide unit 10 and the Z-direction length of the third portion 23 of the moving unit 20 according to the height of the buffer 105, the first position P1 and the second position P2 can be easily seen by the worker standing on the floor of the pit 203. As a result, with the measuring device 1, even if the height of the buffer 105 is as high as 6 m or more, such as in a high-speed elevator or an elevator for high floors, the counterweight clearance can be easily measured without using the lifting device or the fall prevention device.

[0046] Embodiment 2 6 to 9, the counterweight clearance measuring device 2 according to the second embodiment basically has the same configuration as the counterweight clearance measuring device 1 according to the first embodiment and achieves the same effects, but differs from the measuring device 1 in that it includes a first moving unit 20A and a second moving unit 20B. The following mainly describes the differences between the measuring device 2 and the measuring device 1.

[0047] The first moving section 20A and the second moving section 20B are arranged side by side in the X direction. Each of the first moving section 20A and the second moving section 20B is guided by the guide section 10 and is movable relative to the guide section 10 in the Z direction.

[0048] The first moving unit 20A has a configuration similar to that of the moving unit 20 of the measurement device 1 according to embodiment 1. The first moving unit 20A has a first portion 21A, a second portion 22A, and a third portion 23A. The first portion 21A has a configuration similar to that of the first portion 21 of the moving unit 20 of the measurement device 1, the second portion 22A has a configuration similar to that of the second portion 22 of the moving unit 20 of the measurement device 1, and the third portion 23A has a configuration similar to that of the third portion 23 of the moving unit 20 of the measurement device 1.

[0049] The second moving unit 20B has a configuration similar to that of the moving unit 20 of the measurement device 1 according to, for example, embodiment 1. The second moving unit 20B has a fourth portion 21B, a fifth portion 22B, and a sixth portion 23B. The fourth portion 21B has a configuration similar to that of the first portion 21 of the moving unit 20 of the measurement device 1, the fifth portion 22B has a configuration similar to that of the second portion 22 of the moving unit 20 of the measurement device 1, and the sixth portion 23B has a configuration similar to that of the third portion 23 of the moving unit 20 of the measurement device 1.

[0050] The method for measuring counterweight clearance using the measuring device 2 can be performed in the same manner as the method for measuring counterweight clearance using the measuring device 1. That is, the measuring device 2 can also measure the counterweight clearance L2 based on the amount of displacement of the second portion 22A of the first moving part 20A between the first state and the second state. On the other hand, the measuring device 2 can be used in a manner different from that of the measuring device 1. Hereinafter, an example of the method for measuring counterweight clearance using the measuring device 2 will be described with reference to FIGS. 6 to 9.

[0051] 6, in a first state in which the lower surface of the first portion 21A of the first moving part 20A is in contact with the upper surface of the buffer 105, a state is realized in which the lower surface of the fourth portion 21B of the second moving part 20B is also in contact with the upper surface of the buffer 105. In this state, the position in the Z direction of the fifth portion 22B of the second moving part 20B is the same as the first position P1 of the second portion 22A of the first moving part 20A.

[0052] Next, the first moving unit 20A moves upward relative to the guide unit 10 until the upper surface of the first portion 21A of the first moving unit 20A comes into contact with the lower surface of the counterweight spacer 106. Meanwhile, the second moving unit 20B remains in the above state. For example, an operator lifts only the first moving unit 20A upward. In this way, as shown in FIG. 8, a second state is achieved in which the upper surface of the first portion 21A of the first moving unit 20A comes into contact with the lower surface of the counterweight spacer 106. In this second state, the lower surface of the fourth portion 21B of the second moving unit 20B comes into contact with the upper surface of the shock absorber 105.

[0053] In the second state, the second position P2 of the second portion 22A of the first moving part 20A is located above the first position P1 of the second portion 22A of the second moving part 20B by the movement distance of the first moving part 20A. As a result, the displacement amount L3 of the first portion 21 between the first state and the second state (the distance between the third position P3 and the fourth position P4) becomes equal to the distance in the Z direction between the second portion 22A of the first moving part 20A and the fifth portion 22B of the second moving part 20B in the second state.

[0054] 8 and 9, the distance L3 in the Z direction between the second portion 22A of the first moving section 20A and the fifth portion 22B of the second moving section 20B in the second state (the distance between the first position P1 and the second position P2) is measured by an operator. The sum of this distance L3 and the width (thickness) of the first portion 21 in the Z direction can be calculated as the counterweight clearance L2.

[0055] As described above, the measuring device 2 can measure the counterweight clearance L2 based on the distance in the Z direction between the second portion 22A of the first moving part 20A and the fifth portion 22B of the second moving part 20B in the second state. Therefore, the method of measuring the counterweight clearance using the measuring device 2 also does not require the worker to ascend or descend from the floor of the pit 203 to a height that reaches the top surface of the buffer 105, making the elevating device and fall prevention device unnecessary.

[0056] In the measurement method using the measuring device 2, since it is not necessary to record the first position P1 of the second portion 22A of the first moving unit 20A in the first state, it is not necessary to switch between the first state and the second state. In the measurement method using the measuring device 2, it is sufficient to realize at least the third state in which the first portion 21A of the first moving unit 20A is in contact with the counterweight spacer 106 and the fourth portion 21B of the second moving unit 20B is in contact with the buffer 105. In this case, the worker measures the Z-direction distance L3 between the second portion 22A and the fifth portion 22B in the third state. The Z-direction distance L3 between the second portion 22A and the fifth portion 22B in the third state is equal to the Z-direction distance between the first portion 21A and the fourth portion 21B in the third state.

[0057] In the measuring device 2, the first moving unit 20A may be configured to move in the Z direction according to the height of the lower surface of the counterweight spacer 106 to achieve the third state in which the first moving unit 20A is in contact with the counterweight spacer 106. The first moving unit 20A may be configured not to come into contact with the buffer 105. The length by which the first moving unit 20A can move in the Z direction may be shorter than the counterweight clearance L2.

[0058] Similarly, the second moving part 20B may be configured to move in the Z direction according to the height L1 of the upper surface of the shock absorber 105 to achieve the third state in which the second moving part 20B is in contact with the shock absorber 105. The second moving part 20B may be configured not to come into contact with the counterweight spacer 106. The length by which the second moving part 20B can move in the Z direction may be shorter than the counterweight clearance L2.

[0059] Embodiment 3 10 and 11, the counterweight clearance measuring device 3 according to the third embodiment has basically the same configuration as the counterweight clearance measuring device 1 according to the first embodiment and achieves the same effects, but differs from the measuring device 1 in that the guide part 10 further includes a first fixed pulley 14 and a second fixed pulley 15, and the third part of the moving part 20 is a ring-shaped string member 24. The following mainly describes the differences between the measuring device 3 and the measuring device 1.

[0060] The first fixed pulley 14 is disposed above the lower end of the first hole 12. Furthermore, the first fixed pulley 14 is disposed above the lower surface of the counterweight spacer 106.

[0061] The second fixed pulley 15 is disposed below the first fixed pulley 14. The second fixed pulley 15 is disposed below the upper end of the second hole 13.

[0062] The string-like member 24 is hung on each of the first fixed pulley 14 and the second fixed pulley 15 and is folded back at each of the first fixed pulley 14 and the second fixed pulley 15. The first portion 21 is fixed to a part of the string-like member 24 that is stretched on one side of the first fixed pulley 14 and the second fixed pulley 15. The second portion 22 is fixed to another part of the string-like member 24 that is stretched on the other side of the first fixed pulley 14 and the second fixed pulley 15. As a result, when the first portion 21 moves upward, the second portion 22 moves downward.

[0063] Tension is applied to the string member 24. In other words, the string member 24 is not bent. As a result, the movement distance in the Z direction of a portion of the string member 24 that is stretched across one side of the first fixed pulley 14 and the second fixed pulley 15 is equal to the movement distance in the Z direction of another portion of the string member 24 that is stretched across the other side of the first fixed pulley 14 and the second fixed pulley 15. Therefore, the movement distance in the Z direction of the first portion 21 is equal to the movement distance in the Z direction of the second portion 22.

[0064] 10 and 11, the method for measuring the counterweight clearance using the measuring device 3 can be performed in the same manner as the method for measuring the counterweight clearance using the measuring device 1. That is, also with the measuring device 3, the counterweight clearance L2 can be measured based on the displacement amount of the second portion 22 of the moving part 20 between the first state and the second state.

[0065] The measuring device 3 may include a first moving unit and a second moving unit, similar to the measuring device 2. In this case, the guide unit 10 may further include first and second fixed pulleys around which the string-like member of the first moving unit is hung, and third and fourth fixed pulleys around which the string-like member of the second moving unit is hung.

[0066] In the first to third embodiments, the displacement amount of the second portion 22 between the first state and the second state is set to be equal to the displacement amount of the first portion 21 between the first state and the second state, but this is not limited to this. The displacement amount of the second portion 22 between the first state and the second state may be calculated as a value obtained by multiplying the displacement amount of the first portion 21 between the first state and the second state by an arbitrary coefficient. For example, the displacement amount of the second portion 22 between the first state and the second state may be calculated as a value obtained by multiplying the displacement amount of the first portion 21 between the first state and the second state by a coefficient 1 / 2. In this case, the moving portion 20 may be an expandable member having an elastic portion such as a gas spring.

[0067] Similarly, in the second embodiment, the distance in the Z direction between the second portion 22A and the fifth portion 22B in the third state is set to be equal to the distance in the Z direction between the first portion 21A and the fourth portion 21B in the third state, but this is not limited to this. The distance in the Z direction between the second portion 22A and the fifth portion 22B in the third state may be calculated as a value obtained by multiplying the distance in the Z direction between the first portion 21A and the fourth portion 21B in the third state by an arbitrary coefficient.

[0068] Although the embodiments of the present disclosure have been described above, the above-described embodiments can be modified in various ways. Furthermore, the scope of the present disclosure is not limited to the above-described embodiments. The scope of the present disclosure is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0069] 1, 2, 3 measuring device, 10 guide part, 11 cylindrical part, 12 first hole, 13 second hole, 14 first fixed pulley, 15 second fixed pulley, 20 moving part, 20A first moving part, 20B second moving part, 21, 21A first part, 21B fourth part, 22, 22A second part, 22B fifth part, 23, 23A third part, 23B sixth part, 24 string-like member, 30 measuring part, 40 level, 100 elevator device, 101 car, 102 counterweight, 103 rope, 104, 204 hoist, 105 buffer, 105A buffer part, 105B base, 106 counterweight spacer, 107 rail, 201 elevator shaft, 202 machine room, 203 pit.

Claims

1. A counterweight clearance measuring device for measuring a counterweight clearance between a counterweight spacer and a shock absorber, a guide portion extending in the vertical direction; a moving section having a first section, a second section disposed below the first section, and a third section connecting the first section and the second section, the moving section being guided by the guide section and movable in the up-down direction relative to the guide section; a first state in which the first portion is in contact with the buffer and a second state in which the first portion is in contact with the counterweight spacer are switched by the movement of the moving part; A counterweight clearance measuring device further comprising a measuring unit for measuring the displacement amount of the second portion.

2. 2. The counterweight clearance measuring device according to claim 1, wherein a distance between a position of the first portion in the first state and a position of the first portion in the second state is equal to a distance between a position of the second portion in the first state and a position of the second portion in the second state.

3. the guide portion has a cylindrical portion that accommodates the third portion therein, the first portion and the second portion protrude from the third portion and the cylindrical portion in a second direction intersecting the up-down direction, a first hole exposing the first portion and a second hole exposing the second portion are formed in the guide portion; The counterweight clearance measuring device according to claim 1 or 2, wherein the measuring portion is formed around the second hole and includes a scale for reading the amount of displacement.

4. The counterweight clearance measuring device according to any one of claims 1 to 3, wherein the third portion is a rod-shaped member.

5. The guide portion includes a first fixed pulley and a second fixed pulley disposed below the first fixed pulley, the third portion is a circular string-like member that is hung on each of the first fixed pulley and the second fixed pulley and that is folded back at each of the first fixed pulley and the second fixed pulley, the first portion is fixed to a part of the string member that is stretched across one side of the first fixed pulley and the second fixed pulley, the second portion is fixed to another part of the string member that is stretched across the other side of the first fixed pulley and the second fixed pulley, The counterweight clearance measuring device according to any one of claims 1 to 3, wherein tension is applied to the string-like member.

6. a second moving section having a fourth section, a fifth section disposed below the fourth section, and a sixth section connecting the fourth section and the fifth section, the second moving section being guided by the guide section and movable in the up-down direction relative to the guide section; In the first state, the first portion and the fourth portion are in contact with the shock absorber, In the second state, the first portion is in contact with the counterweight spacer and the fourth portion is in contact with the shock absorber; The counterweight clearance measuring device according to any one of claims 1 to 5, wherein the displacement amount is equal to the distance between the second portion and the sixth portion in the second state.

7. A counterweight clearance measuring device for measuring a counterweight clearance between a counterweight spacer and a shock absorber, a guide portion extending in the vertical direction; a first moving section having a first section, a second section disposed below the first section, and a third section connecting the first section and the second section, the first moving section being guided by the guide section and being movable in the up-down direction relative to the guide section; a second moving section having a fourth section, a fifth section disposed below the fourth section, and a sixth section connecting the fourth section and the fifth section, the second moving section being guided by the guide section and movable in the up-down direction relative to the guide section; a state in which the first portion is in contact with the counterweight spacer and the fourth portion is in contact with the shock absorber is realized; The counterweight clearance measuring device further includes a measuring unit for measuring the distance between the second portion and the fifth portion in the above state.

8. The counterweight clearance measuring device according to any one of claims 1 to 7, wherein the guide portion is divisible into a plurality of portions.

9. A counterweight clearance measuring device according to any one of claims 1 to 8, further comprising a spirit level fixed to the guide portion and measuring horizontality in a direction perpendicular to the extension direction of the guide portion.

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