Car and elevator

Abstract

Provided is a car and elevator capable of detecting a speed from a surface state of a guide rail, and capable of easily performing an inspection operation and an oil replenishment operation of an oiler. The car includes a car main body, a guide shoe, an oiler, an imaging section, and a calculation section. The guide shoe, the oiler, and the imaging section are attached to the car main body. The guide shoe is engaged with a guide rail arranged in a hoistway in a slidable manner. The oiler applies lubricating oil to the guide rail. The imaging section images a surface of the guide rail. The calculation section calculates a speed of the car based on an image imaged by the imaging section. The imaging section is disposed below the oiler.

Description

Technical Field

[0001] This invention relates to car and elevator. Background Technology

[0002] Traditionally, elevators use mechanical speed controllers or encoders to detect the distance and speed of the car's movement. These mechanical speed controllers and encoders require long, thin objects like speed controller cables to be installed within the shaft. This necessitates space within the shaft for these long objects, hindering its miniaturization. Therefore, a new elevator design is being considered that detects the car's distance and speed by photographing the surface of the guide rails.

[0003] Patent Document 1 discloses an elevator that senses the relative speed of a car with respect to guide rails. The elevator disclosed in Patent Document 1 includes a car and a speed detection device installed in the car. The speed detection device includes a detection unit and a calculation unit. The detection unit performs image detection on the surface state of a pair of guide rails laid opposite each other in the hoistway along the car's movement path. The calculation unit calculates the car's speed based on the image difference between the guide rail surfaces detected by the detection unit.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: International Publication No. 2020 / 008696 Summary of the Invention

[0007] The problem that the invention aims to solve

[0008] Furthermore, the car is equipped with guide shoes that slidably engage with the guide rails and an oiler for applying lubricating oil to the guide rails. The guide shoes and oiler are located at the corners of the car. Therefore, the inspection unit described in Patent Document 1 becomes an obstacle to the inspection and oil replenishment operations of the oiler.

[0009] In view of the above-mentioned problems, the present invention provides a car and elevator that can detect speed from the surface condition of the guide rail and can easily perform oil supply inspection and oil replenishment operations.

[0010] Technical solutions for solving the problem

[0011] To address the aforementioned issues and achieve the objectives, one aspect of the present invention relates to a car comprising a car body, guide shoes, a lubricator, a camera unit, and a calculation unit. The guide shoes, lubricator, and camera unit are mounted on the car body. The guide shoes are slidably engaged with guide rails disposed in the hoistway. The lubricator applies lubricating oil to the guide rails. The camera unit captures images of the guide rail surface. The calculation unit calculates the car speed based on the images captured by the camera unit. The camera unit is located below the lubricator.

[0012] Additionally, an elevator reflecting one aspect of the present invention includes the aforementioned car capable of moving up and down within a shaft, and guide rails disposed within the shaft to guide the car's movement.

[0013] Invention Effects

[0014] Based on the above-described structure of the car and elevator, the speed can be detected from the surface condition of the guide rails, and the oiler can be easily inspected and replenished. Attached Figure Description

[0015] Figure 1 This is a schematic structural diagram of the elevator according to the first embodiment.

[0016] Figure 2 This is a perspective view of the car in the first embodiment.

[0017] Figure 3 This is a front view of the car according to the first embodiment.

[0018] Figure 4 This is an enlarged view of the upper corner of the car in the first embodiment.

[0019] Figure 5 This is a diagram illustrating the path of lubricating oil that splashes from the oiler of the car in the first embodiment.

[0020] Figure 6 This is a diagram illustrating the path of lubricating oil that splashes from the oiler of the car in the second embodiment. Detailed Implementation

[0021] 1. First Implementation Method

[0022] The following is for reference Figures 1-5 The car and elevator of the first embodiment will be described. Furthermore, common components are labeled with the same reference numerals in all figures.

[0023] [Elevator Structure]

[0024] First, refer to Figure 1 The structure of the elevator according to the first embodiment will be described.

[0025] Figure 1 This is a schematic structural diagram illustrating an example of the elevator structure according to the first embodiment.

[0026] like Figure 1 As shown, elevator 1 is a so-called machine-room-less elevator, which does not have a machine room above the shaft 100 formed within the building structure. However, the elevator of the present invention is not limited to machine-room-less elevators; it can also be an elevator with a machine room above the shaft 100.

[0027] Elevator 1 has a car 110 capable of moving up and down within a shaft 100, a traction machine 120, a counterweight 130, and a pair of guide rails 150 (see reference). Figure 2 ) and sling 170.

[0028] The car 110 carries passengers and goods. A lifting pulley 111 is provided at the lower part of the car 110. A hoisting cable 170 is wound on the lifting pulley 111. A counterweight side pulley 131 is installed on the upper part of the counterweight 130. A hoisting cable 170 is wound on the counterweight side pulley 131.

[0029] The traction machine 120 is positioned at the top of the hoistway 100. Therefore, even if the pit of the hoistway 100 is flooded, the traction machine 120 will not be submerged. As a result, the elevator can continue to operate even if water accumulates in the pit of the hoistway 100. A lifting cable 170 is wound around the traction machine 120.

[0030] The traction machine 120 is a device that winds up the hoisting cable 170 to raise and lower the car 110. The traction machine 120 raises and lowers the car 110 and the counterweight 130 in a counterweight-type manner via the hoisting cable 170. Hereinafter, the direction of movement of the car 110 and the counterweight 130 will be referred to as the vertical direction. The traction machine 120 is driven by a control unit located on a control panel (not shown). The control panel (not shown) is, for example, located at the top of the hoistway 100.

[0031] A pair of guide rails 150 (reference) Figure 2 The car 110 is fixed to the wall of the hoistway 100. A pair of guide rails 150 extend in the vertical direction. The pair of guide rails 150 guide the lifting and lowering of the car 110. In addition, a pair of counterweight guide rails (not shown) are installed on the wall of the hoistway 100. The pair of counterweight guide rails guide the lifting and lowering of the counterweight 130.

[0032] One end of the sling 170 is fixed to the uppermost part of the hoistway 100. The sling 170 is mounted on the traction machine 120 from the counterweight pulley 131 of the counterweight 130 and wound onto the lifting pulley 111 of the car 110. When the traction machine 120 is driven, the car 110 and the counterweight 130 move up and down in opposite directions within the hoistway 100.

[0033] [Structure of the elevator car]

[0034] Next, refer to Figure 2 and Figure 3 The structure of the car 110 will be described.

[0035] Figure 2 This is a three-dimensional view of car 110. Figure 3 This is a front view of the elevator car.

[0036] In this embodiment, the directions of front-back, up-down, and left-right are defined based on the line of sight of the elevator user opposite the car 110. In this case, from the perspective of the elevator user, the front side is called the forward direction, the depth side is called the rear direction, the upper side is called the upper direction, the lower side is called the lower direction, the left side is called the left direction, and the right side is called the right direction.

[0037] like Figure 2 and Figure 3 As shown, the car 110 has a car body 2, a car door 3, a door opening and closing device 4, a car door sill 5, a guard plate 7, multiple guide shoes 8, two oilers 9, two speed detection devices 10, and a control device 11.

[0038] like Figure 2 As shown, the car body 2 is formed as a hollow, roughly rectangular parallelepiped. An entrance / exit is formed on the front of the car body 2. People or objects enter and exit the car body 2 through the front entrance / exit. The car door 3 opens and closes the entrance / exit of the car body 2.

[0039] The door opening and closing device 4 is located above the entrance / exit of the car body 2. The car sill 5 is installed below the entrance / exit of the car body 2. The door opening and closing device 4 and the car sill 5 support the car door 3 in a manner that allows it to slide in the left and right directions. The door opening and closing device 4 has a door drive mechanism that allows the car door 3 to slide in the left and right directions.

[0040] The guard plate 7 is installed on the car door sill 5. The guard plate 7 is a metal plate-shaped component with a plane that is approximately perpendicular to the front-to-back direction. The length of the guard plate 7 in the left-to-right direction is set to be approximately the same as the entire width of the entrance / exit formed by the full opening of the car door 3. The guard plate 7 fills the gap created between the car body 2 and the floor of the landing in the building structure.

[0041] like Figure 3 As shown, the plurality of guide shoes 8 include two upper guide shoes 8A and two lower guide shoes 8B. The two upper guide shoes 8A are fixed to the upper part of the car body 2 via mounting brackets (not shown). The two lower guide shoes 8B are fixed to the lower part of the car body 2 via mounting brackets (not shown).

[0042] Two upper guide shoes 8A and two lower guide shoes 8B protrude from the car body 2 in the left and right directions. The two upper guide shoes 8A and two lower guide shoes 8B are slidably engaged with a pair of guide rails 150.

[0043] Two speed detection devices 10 are positioned above the two upper guide shoes 8A. The two speed detection devices 10 are respectively fixed to the upper part of the car body 2 via brackets 21. The two speed detection devices 10 are positioned opposite a pair of guide rails 150 at a certain distance in the left-right direction.

[0044] Two speed detection devices 10 capture images of a pair of guide rails 150 during the raising and lowering of the car 110 to detect the moving speed of the car 110. Furthermore, it is not necessary to have two speed detection devices 10; at least one is sufficient. The two speed detection devices 10 transmit the moving speed data of the car 110 to the control device 11.

[0045] The bracket 21 has a lifting plate 21a and a mounting platform 21b. The lifting plate 21a extends in the vertical direction. The lower part of the lifting plate 21a is mounted on the upper part of the car body 2. The vertical length of the lifting plate 21a is longer than the vertical length of the upper guide shoe 8A.

[0046] The setting platform 21b is composed of a plate having a plane that is approximately perpendicular to the vertical direction. One plane of the setting platform 21b, namely the bottom surface, is fixed to the upper part of the standing plate 21a. The bottom surface of the setting platform 21b is positioned opposite the upper guide shoe 8A at an appropriate distance in the vertical direction. A speed detection device 10 is provided on the other plane of the setting platform 21b, namely the top surface.

[0047] Two lubricators 9 are positioned above the two speed detection devices 10. The two lubricators 9 are fixed to the bracket 21 via lubricator support 22. The two lubricators 9 are slidably engaged with a pair of guide rails 150. The two lubricators 9 apply lubricating oil to the pair of guide rails 150. This suppresses wear on the pair of guide rails 150 caused by contact with the two upper guide shoes 8A and the two lower guide shoes 8B.

[0048] The control device 11 is fixed to the upper part of the car body 2. The control device 11 includes a processing unit, a storage unit, a distance calculation unit, an anomaly detection unit, and a speed correction unit. The processing unit executes control associated with the car 110. The storage unit stores the moving speed data of the car 110 calculated by the speed detection device 10. The distance calculation unit calculates the moving distance of the car 110 based on its moving speed. The anomaly detection unit performs anomaly detection of the car 110 in real time. The speed correction unit corrects the moving speed value of the car 110 output by the speed detection device 10.

[0049] [Structure of the lubricator]

[0050] Next, refer to Figure 4 The structure of the oiler 9 will be explained.

[0051] Figure 4 It is an enlarged view of the upper corner of car 110.

[0052] like Figure 4 As shown, the lubricator 9 has a housing 9a, a cover 9b, and a lubricator gasket 9c. The housing 9a and the cover 9b form an outer shell that houses the lubricator gasket 9c.

[0053] The housing 9a has a gasket opening (not shown) that exposes a portion of the oiler gasket 9c.

[0054] A portion of the lubricator gasket 9c protrudes from the gasket opening in the housing 9a and contacts the guide rail 150. The lubricator gasket 9c contains lubricating oil and applies it to the guide rail 150. As the lubricating oil in the lubricator gasket 9c decreases, it may no longer be able to apply lubricating oil to the guide rail 150. Therefore, the lubricator gasket 9c needs to be replaced periodically.

[0055] The operator performing maintenance removes cover 9b from housing 9a and replaces lubricator gasket 9c. At this time, since there are no obstructions above lubricator 9, the operator can easily replace lubricator gasket 9c.

[0056] For example, when the speed detection device 10 is located above the lubricator 9, it is necessary to remove the speed detection device 10, then remove the cover 9b of the lubricator 9, making the replacement of the lubricator gasket 9c complicated. Furthermore, the speed detection device 10 needs to be positioned at a certain distance from the guide rail 150. Therefore, the positioning of the removed speed detection device 10 becomes complicated. In this embodiment, since the speed detection device 10 is located below the lubricator 9, the aforementioned complicated operations can be reduced.

[0057] [Structure of the speed detection device]

[0058] Next, refer to Figure 4 The structure of the speed detection device 10 will be described.

[0059] like Figure 4 As shown, the speed detection device 10 has a housing 13, a camera unit 14, and a computing unit 15.

[0060] The housing 13 is formed in a flat, generally rectangular shape. The housing 13 is fixed to the upper part of the car body 2 via a bracket 21 (mounting platform 21b). Therefore, the mounting surface of the housing 13 (speed detection device 10) is located above the working surface of the ceiling of the car body 2. As a result, the operator can easily perform inspection and maintenance work on the speed detection device 10.

[0061] One side of the housing 13 in the left-right direction overlaps with the lubricator 9 in the vertical direction. The other side of the housing 13 in the left-right direction does not overlap with the lubricator 9 in the vertical direction. The housing 13 houses a camera unit 14 and a processing unit 15. The camera unit 14 is disposed on one side of the housing 13 in the left-right direction. The processing unit 15 is disposed on the other side of the housing 13 in the left-right direction.

[0062] One side 13a of the housing 13 faces the guide rail 150. An opening for imaging is formed on one side 13a of the housing 13. The opening exposes the light incident surface of the imaging unit 14. An eave 13b is formed on one side 13a of the housing 13. The eave 13b is located above the opening for imaging. The eave 13b protrudes to the left and right from one side 13a of the housing 13. The eave 13b is formed as a plate having a plane substantially perpendicular to the vertical direction.

[0063] An opening for the arithmetic unit is formed on the other side of the upper part of the housing 13 in the left-right direction. The opening for the arithmetic unit is opposite to the arithmetic unit 15. A cover 13c is detachably installed on the upper part of the housing 13. The cover 13c opens and closes the opening for the arithmetic unit. The operator performs maintenance, inspection, and replacement work on the arithmetic unit 15 through the opening for the arithmetic unit of the housing 13.

[0064] The opening of the operating unit of housing 13 does not overlap with the oiler 9 in the vertical direction. Therefore, the operator can easily install and remove the cover 13c relative to housing 13. As a result, the operator can easily perform maintenance, inspection, and replacement of the operating unit 15.

[0065] The imaging unit 14 includes an illumination unit, a lens, and an imaging element. The light source used in the illumination unit can be, for example, an LED (Light Emitting Diode) or a laser diode. The lens images the light reflected from the surface of the guide rail 150 onto the imaging element. The lens forms the aforementioned light incident surface.

[0066] The camera element captures images of the surface of the guide rail 150 at regular intervals. The camera element only needs to be able to convert the imaged light into an electrical signal; for example, it can be a CCD (Charge Coupled Device) element or a CMOS (Complementary Metal Oxide Semiconductor) element. The camera element sends the captured image data of the guide rail 150 surface to the processing unit 15.

[0067] The arithmetic unit 15 is, for example, composed of a circuit board. The arithmetic unit 15 extracts feature points from image data of the surface of the guide rail 150. The arithmetic unit 15 stores the extracted feature points in the storage unit of the speed detection device 10. The arithmetic unit 15 compares the stored past data with the newly acquired data. The arithmetic unit 15 calculates the moving speed of the car 110 based on the amount of movement of the feature points that appear after the comparison.

[0068] The arithmetic unit 15, for example, detects damage to the guide rail 150 in an image captured at time t as feature points. Next, the arithmetic unit 15 extracts the same damage as feature points from an image captured at time t+Δt, compares the images, and calculates the travel distance. Then, the arithmetic unit 15 calculates the travel speed of the car 110 based on the travel distance and the time difference. The arithmetic unit 15 sends the calculated travel speed data of the car 110 to the control device 11.

[0069] [The splattering lubricant]

[0070] Next, refer to Figure 5 The obstruction of lubricating oil splashing from the oiler 9 is explained.

[0071] Figure 5 This is a diagram illustrating the path of the lubricating oil that splashes out from the lubricator 9.

[0072] like Figure 5 As shown, the rim 13b blocks lubricating oil leaking from the oiler 9 and heading towards the light-incident surface of the camera unit 14. Furthermore, the rim 13b is configured to block the straight line connecting the contact point between the oiler 9 and the guide rail 150 and the light-incident surface of the camera unit 14. Therefore, the rim 13b reliably blocks lubricating oil that scatters from the contact point between the oiler 9 and the guide rail 150 towards the light-incident surface of the camera unit 14.

[0073] Therefore, the eaves 13b prevents lubricating oil from adhering to the light incident surface of the camera unit 14. As a result, lubricating oil will not enter the image captured by the camera element of the camera unit 14. Consequently, the arithmetic unit 15 can extract feature points with high precision and calculate the moving speed of the car 110 with high precision.

[0074] Furthermore, the eaves 13b are configured to block the straight line connecting the contact point between the oiler 9 and the guide rail 150 and the top surface of the mounting platform 21b. As a result, lubricating oil that scatters from the contact point between the oiler 9 and the guide rail 150 towards the top surface of the mounting platform 21b is blocked by the eaves 13b. Consequently, the eaves 13b prevents lubricating oil from scattering and adhering to the light incident surface of the camera unit 14 when it touches the top surface of the mounting platform 21b.

[0075] In this embodiment, the speed detection device 10 (camera unit 14) is located vertically between the lubricator 9 and the upper guide shoe 8A. Furthermore, the upper guide shoe 8A is closer to the car body 2 than both the lubricator 9 and the speed detection device 10. This reduces the distance between the portion (upper guide shoe 8A) in contact with the guide rail 150 and the car body 2. Consequently, it suppresses swaying of the car 110 relative to the guide rail 150. Additionally, it allows for the upper guide shoe 8A to be securely fixed to the car body 2.

[0076] 2. Second Implementation Method

[0077] [Structure of the elevator car]

[0078] Next, refer to Figure 6 The structure of the car in the second embodiment will be described.

[0079] Figure 6 This is a diagram illustrating the path of lubricating oil that splashes from the oiler of the car in the second embodiment.

[0080] Figure 6 The car 110B of the second embodiment shown has the same structure as the car 110 of the first embodiment. The differences between the car 110B and the car 110 of the first embodiment are the speed detection device 10B and the shielding part 23. Therefore, the speed detection device 10B and the shielding part 23 will be described here, and repeated descriptions of the same structure as in the first embodiment will be omitted.

[0081] like Figure 6 As shown, the speed detection device 10B is positioned above the upper guide shoe 8A. The speed detection device 10B is fixed to the upper part of the car body 2 via a bracket 21. The speed detection device 10B is positioned opposite the guide rail 150 at a certain distance in the left-right direction.

[0082] The speed detection device 10B detects the moving speed of the car 110B by photographing the guide rail 150 when the car 110B is moving up and down. Alternatively, two speed detection devices 10B can be provided, similar to the first embodiment, but at least one is sufficient. The speed detection device 10B sends the moving speed data of the car 110B to the control device 11.

[0083] The speed detection device 10B includes a housing 16, a camera unit 14, and a processing unit 15. The housing 16 is formed in a flat, generally rectangular parallelepiped shape. One side of the housing 16 in the left-right direction overlaps with the lubricator 9 in the vertical direction. The other side of the housing 16 in the left-right direction does not overlap with the lubricator 9 in the vertical direction. The housing 16 houses the camera unit 14 and the processing unit 15. The camera unit 14 is disposed within the housing 16 on one side in the left-right direction. The processing unit 15 is disposed within the housing 16 on the other side in the left-right direction.

[0084] One side 16a of the housing 16 faces the guide rail 150. An opening for imaging is formed on one side 16a of the housing 16. The opening for imaging exposes the light incident surface of the imaging unit 14. Furthermore, the eaves 13b of the first embodiment is not formed on one side 16a of the housing 16.

[0085] An opening for the arithmetic unit is formed on the upper left-right side of the housing 16. This opening faces the arithmetic unit 15. A cover 16b is detachably mounted on the upper part of the housing 16. The cover 16b opens and closes the opening for the arithmetic unit. The opening for the arithmetic unit of the housing 16 does not overlap with the lubricator 9 in the vertical direction. Therefore, the operator can easily detach and install the cover 16b relative to the housing 16. As a result, the operator can easily perform maintenance, inspection, and replacement work on the arithmetic unit 15.

[0086] The shielding part 23 has a lifting plate 23a and a shielding plate 23b. The lifting plate 23a extends in the vertical direction. The lower part of the lifting plate 23a is fixed to the mounting platform 21b of the bracket 21. The vertical length of the lifting plate 23a is longer than the vertical length of the housing 16.

[0087] The shielding plate 23b is composed of a plate having a plane that is approximately perpendicular to the vertical direction. One plane, the bottom surface, of the shielding plate 23b is fixed to the upper part of the upright plate 21a. The bottom surface of the shielding plate 23b is positioned at an appropriate distance from the upper part of the housing 16 in the vertical direction. One side of the shielding plate 23b in the left-right direction protrudes further than one side 13a of the housing 16 towards the guide rail 150. The shielding plate 23b blocks lubricating oil leaking from the oiler 9 and heading towards the light incident surface of the camera unit 14.

[0088] The shielding plate 23b is configured to block the length of the straight line connecting the contact point between the oiler 9 and the guide rail 150 and the light incident surface of the camera unit 14. As a result, the shielding plate 23b can reliably block the lubricating oil that flies from the contact point between the oiler 9 and the guide rail 150 to the light incident surface of the camera unit 14.

[0089] Therefore, the shielding plate 23b prevents lubricating oil from adhering to the light incident surface of the camera unit 14. As a result, lubricating oil will not enter the image captured by the camera element of the camera unit 14. Consequently, the arithmetic unit 15 can extract feature points with high precision and calculate the moving speed of the car 110 with high precision.

[0090] Furthermore, the shielding plate 23b is configured to block the straight line connecting the contact point between the oiler 9 and the guide rail 150 and the top surface of the mounting platform 21b. As a result, the shielding plate 23b blocks lubricating oil that scatters from the contact point between the oiler 9 and the guide rail 150 towards the top surface of the mounting platform 21b. Consequently, the eaves 13b prevents lubricating oil from scattering and adhering to the light incident surface of the camera unit 14 when it touches the top surface of the mounting platform 21b.

[0091] The above description covers the car and elevator of the present invention, including their effects. However, the car and elevator of the present invention are not limited to the embodiments described above, and various modifications can be made within the scope of the spirit of the invention as described in the claims.

[0092] For example, in the first embodiment described above, a speed detection device 10 (camera unit) is disposed between the oiler 9 and the upper guide shoe 8A. However, the camera unit of the present invention can be located below the oiler or below the guide shoe. In this case, the guide shoe is located between the camera unit and the oiler, thus eliminating the need for an eaves or shielding portion to block the splashed lubricating oil.

[0093] In the first embodiment described above, the speed detection device 10 includes an arithmetic unit for calculating the moving speed of the car 110. However, the control device may also include an arithmetic unit for calculating the moving speed of the car 110. Furthermore, in the first embodiment described above, the control device 11 includes a distance calculation unit for calculating the moving distance of the car 110. However, the speed detection device 10 may also include a distance calculation unit for calculating the moving distance of the car 110.

[0094] The above-described embodiments are readily understood examples of embodiments of the present invention, and the present invention is not limited to possessing all the structures described. Furthermore, a portion of the structure of one embodiment can be replaced with a structure of another embodiment, and structures of other embodiments can be added to the structure of one embodiment. Additionally, regarding a portion of the structure of each embodiment, other structures can be added, deleted, or replaced.

[0095] Furthermore, the terms “parallel” and “orthogonal” are used in this specification, but they do not only mean strictly “parallel” and “orthogonal”, but can also refer to a state of “approximately parallel” or “approximately orthogonal” that includes “parallel” and “orthogonal” and is within the range where it can perform its function.

[0096] Explanation of reference numerals in the attached figures

[0097] 1…Elevator, 2…Car body, 3…Car door, 4…Door opening and closing device, 5…Sill, 7…Guard plate, 8…Guide shoe, 8A…Upper guide shoe, 8B…Lower guide shoe, 9…Oil feeder, 9a…Housing, 9b…Cover, 9c…Oil feeder gasket, 10, 10B…Speed ​​detection device, 11…Control device, 13, 16…Housing, 13a, 16a…One side, 13b…Eaves, 13… c, 16b…cover, 14…camera unit, 15…computing unit, 21…support, 21a…lifting plate, 21b…setting platform, 22…oiler support, 23…shielding unit, 100…hoistway, 110, 110B…car, 111…lifting pulley, 120…traction machine, 130…counterweight, 131…counterweight side pulley, 150…a pair of guide rails, 170…slings.

Claims

1. A car, characterized in that, include: The main body of the car; The guide shoe installed on the car body is slidably engaged with the guide rail configured in the hoistway; The lubricator installed on the car body is used to apply lubricating oil to the guide rails; The camera unit installed on the main body of the car is used to photograph the surface of the guide rail; and A calculation unit that calculates the speed of the car based on the images captured by the camera unit. The camera unit is located below the oiler.

2. The car according to claim 1, characterized in that: The camera unit is located between the guide shoe and the oiler.

3. The car according to claim 2, characterized in that: It has a housing that accommodates the camera unit. The housing has a camera opening that exposes the light incident surface of the camera unit and an eaves formed above the camera opening.

4. The car according to claim 3, characterized in that: The eaves are configured to block the length of the straight line connecting the contact point between the oiler and the guide rail and the light incident surface.

5. The car according to claim 3, characterized in that: The housing houses the computing unit. The arithmetic unit is positioned vertically in a location that does not overlap with the oiler. An opening for the arithmetic unit is formed on the upper part of the housing, opposite to the arithmetic unit. The housing has a cover portion for opening and closing the arithmetic unit.

6. The car according to claim 3, characterized in that: The housing is fixed to the upper part of the car body via a mounting platform. The mounting surface of the housing is located above the working surface of the car body's roof.

7. The car according to claim 1, characterized in that: It has a shielding part disposed between the camera unit and the oiler, which blocks the lubricating oil from the oiler to the camera unit.

8. The car according to claim 7, characterized in that: The shielding portion is configured to block the length of the straight line connecting the contact point between the oiler and the guide rail and the light incident surface of the camera.

9. An elevator, characterized in that, include: A car capable of moving up and down within a shaft; and Guide rails configured in the hoistway to guide the lifting and lowering of the car. The car includes: The main body of the car; The guide shoe installed on the car body is slidably engaged with the guide rail; The lubricator installed on the car body is used to apply lubricating oil to the guide rails; A camera unit installed on the main body of the car is used to photograph the surface of the guide rail; and A calculation unit that calculates the speed of the car based on the images captured by the camera unit. The camera unit is located below the oiler.

Images