Oil recovery device and oil recovery method

Abstract

An oil recovery device (20) is provided with a container (21), a suction device (22), and a tube body (23). A through hole (24a) and a through hole (24b) are formed in the container (21). The suction device (22) has a tube body (28). The suction device (22) sucks air from the tube body (28). The tube body (23) can be attached to and detached from the container (21). In a state in which the tube body (23) is attached to the container, air inside the container (21) is sucked in by the suction device (22) via the through-hole (24a), whereby oil sucked in from the tip of the tube body (23) is collected to the container via the through-hole (24b).

Description

Technical Field

[0001] The present disclosure relates to an apparatus for recovering oil and a method for recovering oil. Background Art

[0002] Patent Document 1 describes an oil recovery device used in a passenger conveyor. The device described in Patent Document 1 includes a twin-shaft screw roller device. The twin-shaft screw roller device is driven to recover oil accumulated in an oil pan into a container.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2017-57023 Summary of the invention

[0006] Problems to be solved by the invention

[0007] The device described in Patent Document 1 is always installed in the passenger conveyor. In a passenger conveyor not equipped with such a device, the oil accumulated in the oil pan is recovered by maintenance personnel. The oil recovery operation takes time and effort, and thus there is a problem that the burden on maintenance personnel is large.

[0008] The present disclosure is made to solve the above-mentioned problems. An object of the present disclosure is to provide an oil recovery device and an oil recovery method that can reduce the burden on maintenance personnel who recover oil.

[0009] Means for solving problems

[0010] The oil recovery device disclosed in the present invention comprises: a container having a first through hole and a second through hole; a suction device having a first tube body for sucking air from the first tube body; and a second tube body that can be attached to and detached from the container. When the second tube body is mounted on the container, the air inside the container is sucked by the suction device through the first through hole, thereby the oil sucked from the end of the second tube body is recovered to the container through the second through hole.

[0011] The oil recovery device disclosed in the present invention comprises: a container having a first through hole formed therein; a cylinder having a second through hole and a third through hole formed therein and having one end open; a suction device having a first tube body for sucking air from the first tube body; and a second tube body provided on the cylinder body. In a recovery state in which the cylinder body is arranged in the container in such a manner that the first through hole is covered by the end, the air inside the container is sucked by the suction device through the first through hole and the second through hole, and the oil sucked from the end of the second tube body is recovered into the container through the third through hole and the first through hole.

[0012] The oil recovery method disclosed in the present invention includes: a processing step of forming a through hole in an empty container that has been filled with new oil; a connecting step of screwing a threaded portion of a first adapter into the through hole after the processing step, and connecting a hose for sucking oil to the first adapter; an installing step of installing a second adapter at the injection port of the container; and a recovering step of sucking air inside the container by using a suction device connected to the second adapter after the connecting step and the installing step, thereby recovering the oil sucked from the hose into the container.

[0013] The oil recovery method disclosed in the present invention includes: a preparation step of preparing an empty first container filled with new oil and a cylindrical empty second container; a first processing step of removing the bottom of the second container to open one end of the second container; a second processing step of forming a through hole in the second container; a connection step of screwing the threaded portion of the adapter into the through hole to connect a hose for sucking oil to the adapter; and a recovery step of arranging the second container in the first container in such a manner that the first injection port of the first container is covered by the end, and sucking the air inside the first container through the second injection port of the second container by using a suction device, thereby recovering the oil sucked from the hose to the first container through the first injection port.

[0014] Effects of the Invention

[0015] According to the present disclosure, it is possible to reduce the burden on maintenance personnel who recover oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a figure which shows an example of a passenger conveyor.

[0017] Figure 2 This is a diagram showing an example of the oil recovery device according to the first embodiment.

[0018] Figure 3 It is a figure which shows an example of a container.

[0019] Figure 4 It is a figure which shows an example of a container.

[0020] Figure 5 The figure shows an example of a tube body.

[0021] Figure 6 It is a cross-sectional view showing a state where the hose and the connection portion of the adapter are connected.

[0022] Figure 7 It is a cross-sectional view showing an example of an adapter.

[0023] Figure 8 This is a flowchart showing an example of the oil recovery method according to the first embodiment.

[0024] Fig. 9It is a diagram showing a cross section of the oil recovery device in a recovery state.

[0025] Fig.10 This is a diagram showing another example of the oil recovery device according to the first embodiment.

[0026] Fig.11 It is a cross-sectional view showing an example of a cylindrical body.

[0027] Fig.12 The figure shows an example of a tube body.

[0028] Fig.13 It is a cross-sectional view showing an example of a closed body.

[0029] Fig.14 This is a flowchart showing another example of the oil recovery method according to the first embodiment. DETAILED DESCRIPTION

[0030] The following is a detailed description with reference to the accompanying drawings. The repeated description is appropriately simplified or omitted. In each figure, the same reference numeral represents the same part or a corresponding part.

[0031] Implementation method 1.

[0032] Figure 1 It is a figure which shows an example of a passenger conveyor. Figure 1 An escalator is shown as an example of a passenger conveyor. Passenger conveyors also include moving walkways.

[0033] The escalator includes a truss 1 and steps 2. The truss 1 is installed between upper and lower floors. Passengers take the steps 2 to move from an entrance 3 to an exit 4. As an example, Figure 1 An escalator going up is shown.

[0034] A machine room 5 is provided below the exit 4. The machine room 5 is a space formed inside the truss 1. A motor 6 and a control device 7 are provided in the machine room 5. The motor 6 drives the step 2. The control device 7 controls the motor 6. For example, the motor 6 rotates a shaft 9 provided in the machine room 5 via a reducer 8. A sprocket 10 and a sprocket 11 are provided on the shaft 9. A step chain 12 is wound around the sprocket 10. A plurality of step shafts 13 are provided on the step chain 12. A step 2 is fixed to each step shaft 13. Thus, a plurality of steps 2 are connected to the step chain 12.

[0035] The steps 2 move by being pulled by the step chain 12. Since the step chain 12 is endless, the steps 2 move in a loop. Passengers take the steps 2 moving from the entrance 3 to the exit 4. Passengers taking the steps 2 hold the moving handrail 14 for safety.

[0036] The moving handrail 14 is formed in a ring shape. The moving handrail 14 is driven by a driving device 15. The driving device 15 drives the moving handrail 14 by rotating rollers that clamp the moving handrail 14 from above and below. A handrail chain 16 is wound around the sprocket 11. The driving force of the motor 6 is transmitted to the driving device 15 through the handrail chain 16.

[0037] The step chain 12 and the handrail chain 16 are examples of chains used in escalators. In escalators, other chains can also be used. The oil supply device 17 supplies oil for lubrication to these chains. For example, the step chain 12 is supplied with oil from the oil supply device 17.

[0038] The oil pan 18 is supported by the truss 1. The oil pan 18 is arranged at least directly below the components to which the oil is supplied. The components include the step chain 12 and the handrail chain 16. For example, a part of the oil supplied to the step chain 12 drips from the step chain 12 and falls on the oil pan 18. The oil falling on the oil pan 18 moves downward along the oil pan 18. Therefore, the oil is accumulated on the oil pan 18 below the inlet 3.

[0039] The maintenance personnel of the escalator must recover the oil accumulated in the oil pan 18. Hereinafter, the oil recovery device 20 used by the maintenance personnel when performing the oil recovery work will be described.

[0040] Figure 2 1 is a diagram showing an example of the oil recovery device 20 according to Embodiment 1. The oil recovery device 20 includes a container 21 , a suction device 22 , and a tube 23 .

[0041] Figure 3 and Figure 4 It is a figure which shows an example of the container 21. Figure 3 It is a front view of the container 21. Figure 4 It is a top view of the container 21. Figure 3 The upper part of Figure 4 AA section. Container 21 is a container for recovering oil. In the escalator, when the oil in the oil supply device 17 is low, the maintenance personnel replenish the oil to the oil supply device 17. Container 21 can also be an empty container that has been filled with new oil before, that is, a so-called oil tank.

[0042] The container 21 is formed with a through hole 24 a and a through hole 24 b . Figure 3 and Figure 4 2 shows a preferred example in which the through hole 24a and the through hole 24b are formed on the upward surface 21a of the container 21. Figure 3 and Figure 4 The example in which the container 21 is an empty oil tank and the through hole 24a is an oil injection port is shown. If the container 21 is an oil tank, the container 21 includes an annular member 25. The annular member 25 protrudes upward from the surface 21a. The through hole 24a is formed by the annular member 25.

[0043] The cover 26 can be attached and detached from the annular member 25. When the cover 26 is attached to the annular member 25, the through hole 24a is sealed by the cover 26. That is, when the cover 26 is attached to the annular member 25, even if oil is contained in the container 21, the oil does not spill out from the through hole 24a.

[0044] Figures 2 to 4 FIG. 2 shows a preferred example in which the oil recovery device 20 further includes a handle 27. The handle 27 is provided on the surface 21a of the container 21. The handle 27 is preferably disposed at the center of the surface 21a. Figures 2 to 4 The example in which the handle 27 is arranged between the through hole 24a and the through hole 24b is shown. Since the handle 27 is arranged between the through hole 24a and the through hole 24b, a certain distance is ensured between the through hole 24a and the through hole 24b.

[0045] The suction device 22 includes a tube 28 and a blower 29. When the blower 29 is operated, air is sucked from the tube 28. The suction device 22 is used to suck air inside the container 21 through the through hole 24a. The suction device 22 may be a hand-held vacuum cleaner.

[0046] Figure 5 2 is a diagram showing an example of the tube body 23. The tube body 23 can be attached to and detached from the container 21. The tube body 23 is a component that actually sucks in oil. Figure 2 and Figure 5 In the example shown, the pipe body 23 includes an adapter 30 and a hose 31. As an example, the adapter 30 is a so-called hose coupling. The adapter 30 includes a threaded portion 32 and a connecting portion 33. The adapter 30 is formed with a through hole 30a extending from the end face of the threaded portion 32 to the end face of the connecting portion 33 in a straight line.

[0047] As an example, the hose 31 is made of rubber. The hose 31 is attachable to and detachable from the connection portion 33 of the adapter 30. Figure 6 3 is a cross-sectional view showing a state where the hose 31 is connected to the connection portion 33 of the adapter 30. When the hose 31 is connected to the connection portion 33, the hollow portion of the hose 31 communicates with the through hole 30a.

[0048] Figure 2 The oil recovery device 20 is shown as an example in which the adapter 34 is further provided. The adapter 34 is a member for connecting the tube body 28 of the suction device 22 and the annular member 25 of the container 21 while ensuring airtightness. Figure 7 2 is a cross-sectional view showing an example of the adapter 34. As an example, the adapter 34 is a cylindrical rubber member. The adapter 34 can be attached to and detached from the annular member 25. Figure 7 In the illustrated example, a circular groove 34 b corresponding to the annular member 25 is formed at one end 34 a of the adapter 34 .

[0049] Next, refer to Figure 8 , a method for maintenance personnel to recover oil using the oil recovery device 20 is described. Figure 8 This is a flowchart showing an example of the oil recovery method according to the first embodiment.

[0050] In the preparation process shown in S101, the maintenance personnel prepares an empty container, i.e., a so-called oil tank, which has been filled with new oil before. As described above, in the escalator, when the oil in the oil supply device 17 is low, the maintenance personnel replenishes the oil to the oil supply device 17. The maintenance personnel only need to prepare an oil tank that has become empty by replenishing the oil to the oil supply device 17 as the container.

[0051] Next, the maintenance personnel forms a through hole 24b in the prepared empty container in the processing step shown in S102. The through hole 24a as the oil injection port is formed in advance in the oil tank. Therefore, by forming the through hole 24b, it is possible to produce Figure 3 and Figure 4 The container 21 is shown.

[0052] Next, the maintenance personnel connects the tube body 23 to the container 21 in the connection step shown in S103. In the connection step, the maintenance personnel screws the threaded portion 32 of the adapter 30 into the through hole 24b, thereby installing the adapter 30 on the surface 21a of the container 21. The through hole 24b is formed to have a diameter that is consistent with the diameter of the threaded portion 32. When the adapter 30 is installed on the surface 21a, the maintenance personnel connects the hose 31 to the connection portion 33 protruding upward from the surface 21a.

[0053] Next, the maintenance personnel installs the adapter 34 to the injection port of the container 21 in the installation process shown in S104. As described above, the groove 34b is formed at the end 34a of the adapter 34. After the maintenance personnel arranges the adapter 34 so that the groove 34b is located directly above the annular member 25, the adapter 34 is pressed against the surface 21a. As a result, the annular member 25 enters the groove 34b and is clamped by the end 34a of the adapter 34. That is, the adapter 34 is installed on the annular member 25 of the container 21.

[0054] In addition, the connection step shown in S103 is performed after the processing step shown in S102. On the other hand, the mounting step shown in S104 may be performed before the connection step shown in S103.

[0055] After the connection process shown in S103 and the installation process shown in S104, the maintenance personnel recover the oil accumulated in the oil pan 18 in the recovery process shown in S105. In the recovery process, the maintenance personnel first insert the pipe body 28 of the suction device 22 into the adapter 34 from above, thereby connecting the pipe body 28 and the adapter 34. As a result, the oil recovery device 20 is in a state where it can recover oil. Hereinafter, this state is also referred to as a recovery state.

[0056] Figure 2 The oil recovery device 20 is shown in a recovery state. Fig. 9 It is a diagram showing a cross section of the oil recovery device 20 in a recovery state. Fig. 9 It is equivalent to Figure 4 In addition, Fig. 9 In the drawing, the suction device 22 is not shown in cross section.

[0057] like Figure 2 and Fig. 9 As shown, in the recovery state, the tube body 23 is mounted on the container 21. In addition, in the recovery state, the adapter 34 is mounted on the annular member 25 of the container 21. In the recovery state, the tube body 28 of the suction device 22 is connected to the adapter 34. In addition, a fixing unit such as a bolt is not required to connect the tube body 28 to the adapter 34. Fig. 9 The example in which the tube body 28 made of hard plastic is pressed against the adapter 34 made of rubber from above to connect the tube body 28 and the adapter 34 is shown.

[0058] The maintenance personnel then operates the blower 29 of the suction device 22 while maintaining the recovery state. When the blower 29 operates, the air inside the container 21 is sucked into the suction device 22. That is, the air inside the container 21 is sucked into the suction device 22 via the through hole 24a and the hollow portion of the adapter 34.

[0059] When the maintenance personnel operates the blower 29, the end 31a of the hose 31 is brought close to the oil on the oil pan 18, and the oil is sucked in through the hose 31. The end 31a of the hose 31 is the end of the tube body 23. The oil sucked in from the end 31a of the hose 31 is recovered into the container 21 through the through hole 24b. That is, the oil sucked into the hose 31 from the end 31a passes through the hollow portion of the hose 31 and the through hole 30a, and falls from the lower end of the adapter 30 into the inside of the container 21.

[0060] After the recovery process shown in S105, the maintenance personnel removes the tube body 23 and the adapter 34 from the container 21 in the disassembly process shown in S106. In the disassembly process, the maintenance personnel removes the hose 31 from the adapter 30 and removes the adapter 30 from the through hole 24b. In addition, the maintenance personnel removes the adapter 34 from the annular member 25, that is, the through hole 24a.

[0061] After the disassembly process shown in S106 , the maintenance personnel closes the through hole 24 a and the through hole 24 b in the closing process shown in S107 . The method of closing the through hole 24 b may be any method. The maintenance personnel can close the through hole 24 a by attaching the cover 26 to the annular member 25 .

[0062] In the above example, the air inside the container 21 is sucked by the suction device 22 through the through hole 24a in the recovery state, and thus the oil sucked from the terminal 31a of the hose 31 can be recovered to the container 21 through the through hole 24b. The maintenance personnel can recover the oil to the container 21 simply by moving the terminal 31a of the hose 31 according to the position where the oil is accumulated. Therefore, the burden on the maintenance personnel who recover the oil can be greatly reduced.

[0063] In addition, the adapter 34 is preferably capable of holding the suction device 22 above the container 21 when attached to the annular member 25. If the adapter 34 can hold the suction device 22, the maintenance personnel do not need to support the suction device 22 when recovering the oil. In addition, if the adapter 34 can hold the suction device 22 above the container 21, the oil recovery device 20 can be placed even in a narrow place such as inside the truss 1.

[0064] Next, another example of the oil recovery device 20 will be described. Fig.10 This is a diagram showing another example of the oil recovery device 20 according to the first embodiment. Fig.10 It is equivalent to Figure 4 A cross section of the AA cross section. Fig.10 The oil recovery device 20 shown in the figure includes a container 21, a cylinder 40, a suction device 22, and a tube 23. Fig.10 An example in which the oil recovery device 20 further includes a handle 27 is shown.

[0065] Except that the through hole 24b is not formed in the container 21, Fig.10 The container 21 and the handle 27 shown are Figure 3 and Figure 4 The container 21 and the handle 27 shown are the same. That is, the through hole 24a is formed in the upward surface 21a of the container 21. Fig.10 The container 21 is an oil tank, and the through hole 24a is a preferred example of an oil injection port. In this example, the through hole 24a is formed by an annular member 25. The cover 26 can be attached and detached to the annular member 25. When the cover 26 is attached to the annular member 25, the through hole 24a is sealed by the cover 26.

[0066] Fig.112 is a cross-sectional view showing an example of the cylinder 40. In escalators and elevators, a bottle-shaped small oil tank is used in addition to a large oil tank used as the container 21. The cylinder 40 may also be made of an empty container previously filled with new oil, that is, a bottle-shaped small oil tank.

[0067] The cylinder 40 has through holes 40a and 40b. One end 40c of the cylinder 40 is open. Fig.11 In the example shown, the through hole 40a is formed at the other end of the cylindrical body 40. The through hole 40b is formed at the side surface of the cylindrical body 40. Fig.11 The example in which the cylinder 40 is an oil tank and the through hole 40a is an oil injection port is shown. If the cylinder 40 is an oil tank, the cylinder 40 includes an annular member 41. The through hole 40a is formed by the annular member 41.

[0068] The cover 42 is detachable from the annular member 41 . When the cover 42 is attached to the annular member 41 , the through hole 40 a is sealed by the cover 42 .

[0069] Fig.10 The suction device 22 shown is Figure 2 The suction device 22 shown is identical. Fig.10 In the suction device 22 shown, the tube body 28 is formed by a flexible member. Fig.10 In the figure, the main body of the suction device 22 is omitted. The main body of the suction device 22 is a portion to which the tube body 28 is connected, and a portion in which the blower 29 is built-in.

[0070] Fig.12 1 is a diagram showing an example of the tube body 23. The tube body 23 is provided in the cylinder body 40. Fig.10 and Fig.12 The pipe body 23 shown can be installed and removed relative to the cylinder body 40. The pipe body 23 is the component that actually sucks the oil. Fig.10 and Fig.12 In the illustrated example, the tube body 23 includes an adapter 30 , a hose 31 , and a conduit 43 . Fig.10 and Fig.12 The adapter 30 and the hose 31 shown are Figure 2 The adapter 30 and hose 31 shown are identical.

[0071] The conduit 43 is an L-shaped tube for guiding oil. The conduit 43 can be attached to and detached from the threaded portion 32 of the adapter 30. Fig.10 and Fig.12 In the example shown, a hose 31 is connected to one end of the adapter 30, and a conduit 43 is connected to the other end of the adapter 30. When the hose 31 and the conduit 43 are connected to the adapter 30, the hollow parts of the hose 31 and the conduit 43 communicate with the through hole 30a.

[0072] Fig.10 The example in which the oil recovery device 20 further includes a sealing body 44 is shown. The sealing body 44 is a member for sealing the gap between the container 21 and the end 40c of the cylinder 40. Fig.13 2 is a cross-sectional view showing an example of the sealing body 44. As an example, the sealing body 44 is a plate-shaped rubber member. A through hole 44a is formed in the sealing body 44. The diameter of the through hole 44a is larger than the diameter of the annular member 25.

[0073] Next, refer to Fig.14 , for maintenance personnel to use Fig.10 A method of recovering oil using the oil recovery device 20 shown will be described. Fig.14 This is a flowchart showing another example of the oil recovery method according to the first embodiment.

[0074] In the preparation process shown in S201, the maintenance personnel prepares an empty container that has been filled with new oil before, that is, a so-called oil tank. In the preparation process, the maintenance personnel prepare a large rectangular parallelepiped oil tank and a small cylindrical oil tank. The prepared large oil tank is used directly as the container 21.

[0075] Next, the maintenance personnel removes the bottom of the prepared small empty container in the first processing step shown in S202, so that one end of the container is open. In addition, the maintenance personnel forms a through hole 40b on the side of the prepared small empty container in the second processing step shown in S203. The through hole 40a as the oil injection port is formed in advance in the bottle-shaped small oil tank. Therefore, by performing the first processing step and the second processing step, the following can be manufactured: Fig.11 The barrel 40 is shown.

[0076] Next, the maintenance personnel connects the tube body 23 and the cylinder body 40 in a connection step shown in S204 .

[0077] In the connection process, the maintenance personnel firstly puts one end of the conduit 43 in close contact with the through hole 40b from the inside of the cylinder 40. Then, the maintenance personnel screws the threaded portion 32 of the adapter 30 into the through hole 40b while maintaining this state, thereby mounting the adapter 30 on the side of the cylinder 40. Thus, the adapter 30 is fixed to the cylinder 40, and the conduit 43 is connected to the end of the adapter 30 disposed inside the cylinder 40. In addition, the diameter of the through hole 40b is formed to be consistent with the diameter of the threaded portion 32.

[0078] When the adapter 30 is mounted on the cylinder 40 , the maintenance worker connects the hose 31 to the connection portion 33 protruding laterally from the cylinder 40 . Thus, the hose 31 is connected to the end portion of the adapter 30 disposed outside the cylinder 40 .

[0079] Next, the maintenance personnel recovers the oil accumulated in the oil pan 18 in the recovery step shown in S205. In the recovery step, the maintenance personnel first places the sealing body 44 on the surface 21a of the container 21 so that the annular member 25 is arranged inside the through hole 44a.

[0080] Next, the maintenance personnel places the cylinder 40 on the sealing body 44 so that the end portion 40c surrounds the annular member 25, and arranges the cylinder 40 in the container 21 so that the end portion 40c covers the through hole 24a. In addition, the maintenance personnel inserts the tube 28 of the suction device 22 into the cylinder 40 from the through hole 40a. Thus, the oil recovery device 20 is in a recovery state capable of recovering oil.

[0081] Fig.10 20 represents the oil recovery device 20 in the recovery state. Fig.10 As shown, in the recovery state, the tube body 23 is mounted on the cylinder 40. In addition, in the recovery state, the cylinder 40 is arranged in the container 21 in such a manner that the through hole 24a is covered by the end 40c. In the recovery state, the gap between the surface 21a of the container 21 and the end 40c of the cylinder 40 is closed by the closing body 44. In the recovery state, the tube body 28 of the suction device 22 is connected to the annular member 41 of the cylinder 40.

[0082] Fig.10 The example in which the tube body 28 inserted into the through hole 40a is bent and the through hole 40a is closed by the tube body 28 is shown. The tube body 28 of the suction device 22 may be connected to the annular member 41 via a member such as an adapter 34.

[0083] The maintenance personnel then operates the blower 29 of the suction device 22 while maintaining the recovery state. When the blower 29 is operated, the air inside the container 21 is sucked into the suction device 22 through the through hole 24a and the through hole 40a.

[0084] When the maintenance personnel operates the blower 29, the terminal 31a of the hose 31 is brought close to the oil on the oil pan 18, and the oil is sucked in through the hose 31. The oil sucked in from the terminal 31a of the hose 31 is recovered into the container 21 via the through hole 40b and the through hole 24a. That is, the oil sucked into the hose 31 from the terminal 31a passes through the hollow portion of the hose 31, the through hole 30a, and the hollow portion of the conduit 43, and falls from the terminal 43a of the conduit 43 into the interior of the container 21.

[0085] The conduit 43 is a member for guiding the oil passing through the hose 31 and the adapter 30 to the container 21. The conduit 43 preferably passes through the through hole 24a in a recovery state, and a terminal end 43a thereof is disposed inside the container 21.

[0086] After the recovery process shown in S205, the maintenance personnel separates the cylinder 40 from the container 21 in the separation process shown in S206. In the separation process, the maintenance personnel pulls out the tube 28 from the through hole 40a and removes the cylinder 40 from the container 21. In addition, the maintenance personnel removes the sealing body 44 from the container 21.

[0087] Next, the maintenance personnel closes the through hole 24a in the closing step shown in S207. The maintenance personnel can close the through hole 24a by attaching the cover 26 to the annular member 25.

[0088] In this example as well, the maintenance personnel can recover the oil to the container 21 by simply moving the end 31a of the hose 31 according to the position where the oil is accumulated. Therefore, the burden on the maintenance personnel who recover the oil can be greatly reduced. In addition, according to this example, a large oil tank that has been filled with new oil before can be used directly as the container 21.

[0089] In the present embodiment, an example is described in which a maintenance worker uses the oil recovery device 20 to recover oil accumulated in the oil pan 18 of the escalator. As another example, the oil recovery device 20 may be used to recover oil accumulated in a place other than the oil pan 18. The oil recovery device 20 may also be used to recover oil accumulated in a place other than the escalator.

[0090] Industrial Applicability

[0091] The oil recovery device of the present disclosure can be used to recover accumulated oil.

[0092] Description of symbols

[0093] 1: Truss, 2: Step, 3: Entrance, 4: Exit, 5: Machine room, 6: Motor, 7: Control device, 8: Reducer, 9: Shaft, 10: Sprocket, 11: Sprocket, 12: Step chain, 13: Step shaft, 14: Moving handrail, 15: Driving device, 16: Handrail chain, 17: Oil supply device, 18: Oil pan, 20: Oil recovery device, 21: Container, 21a: Surface, 22: Suction device, 23: Tube, 24a: Through hole, 24b: Through hole, 2 5: annular component, 26: cover, 27: handle, 28: tube body, 29: blower, 30: adapter, 30a: through hole, 31: hose, 31a: end, 32: threaded portion, 33: connecting portion, 34: adapter, 34a: end, 34b: groove, 40: cylinder body, 40a: through hole, 40b: through hole, 40c: end, 41: annular component, 42: cover, 43: conduit, 43a: end, 44: closing body, 44a: through hole.

Claims

1. An oil recovery device, comprising: a container formed with a first through hole and a second through hole; A suction device having a first tube body for sucking air from the first tube body; and A second tube body, which can be loaded and unloaded relative to the container, When the second tube is attached to the container, air inside the container is sucked by the suction device through the first through hole, whereby oil sucked from the distal end of the second tube is recovered into the container through the second through hole.

2. The oil recovery device according to claim 1, wherein: The second tube body comprises: a first adapter having a threaded portion that is screwed into the second through hole; and A hose is connected to the first adapter.

3. The oil recovery device according to claim 1 or 2, wherein: The oil recovery device further comprises a second adapter, The container includes an annular member forming the first through hole, The second adapter can be attached to and detached from the annular member. The first tube body of the suction device is connected to the second adapter.

4. The oil recovery device according to claim 3, wherein: The first through hole is formed on the upward surface of the container, The second adapter can hold the suction device above the container in a state in which it is attached to the annular member.

5. The oil recovery device according to claim 3 or 4, wherein: The oil recovery device further includes a cover that is attachable to and detachable from the annular member. When the cover is mounted on the annular member, the first through hole is sealed by the cover.

6. The oil recovery device according to any one of claims 1 to 3, wherein: The first through hole and the second through hole are formed on an upward surface of the container.

7. The oil recovery device according to claim 6, wherein: The oil recovery device further comprises a handle, the handle being provided on the upward surface of the container, The handle is disposed between the first through hole and the second through hole.

8. The oil recovery device according to any one of claims 1 to 7, wherein: The container is an empty container that has been filled with new oil. The first through hole is an oil injection port.

9. An oil recovery device comprising: a container having a first through hole formed therein; A cylindrical body having a second through hole and a third through hole formed therein and having one end open; A suction device having a first tube body for sucking air from the first tube body; and A second tube body is arranged on the cylinder body, When the cylinder is arranged in a recovery state of the container in such a manner that the first through hole is covered by the end portion, the air inside the container is sucked into the suction device via the first through hole and the second through hole, thereby the oil sucked into the container from the end of the second tube body via the third through hole and the first through hole.

10. The oil recovery device according to claim 9, wherein: The second tube body can be installed and removed relative to the cylinder body.

11. The oil recovery device according to claim 10, wherein: The second tube body comprises: an adapter having a threaded portion, the threaded portion being screwed into the third through hole; a hose connected to an end portion of the adapter that is disposed outside the cylinder; as well as A conduit is connected to an end portion of the adapter that is disposed inside the cylinder and is used to guide the oil that has passed through the hose and the adapter to the container.

12. The oil recovery device according to claim 11, wherein: The distal end of the conduit is disposed inside the container in the recovery state.

13. The oil recovery device according to any one of claims 9 to 12, wherein: The oil recovery device further comprises a cover, The container includes an annular member forming the first through hole, The cover can be attached to and detached from the annular member. When the cover is mounted on the annular member, the first through hole is sealed by the cover.

14. The oil recovery device according to any one of claims 9 to 13, wherein: The oil recovery device further includes a sealing body for sealing a gap between the container and the end portion of the cylinder in the recovery state.

15. The oil recovery device according to any one of claims 9 to 14, wherein: The container is an empty container that has been filled with new oil. The first through hole is an oil injection port.

16. An oil recovery method comprising: In the processing step, a through hole is formed in the empty container which has been filled with new oil; a connecting step of, after the processing step, screwing the threaded portion of the first adapter into the through hole to connect a hose for sucking oil to the first adapter; An installation step of installing a second adapter at the injection port of the container; as well as A recovery step is performed after the connection step and the mounting step, wherein the air inside the container is sucked by a suction device connected to the second adapter, thereby recovering the oil sucked from the hose into the container.

17. The oil recovery method according to claim 16, wherein: The oil recovery method further comprises: a disassembly step of, after the recovery step, removing the first adapter from the through hole and removing the second adapter from the injection port; and A closing step is performed after the disassembling step to close the through hole and attach a cap to the injection port.

18. An oil recovery method comprising: A preparation step of preparing an empty first container filled with new oil and an empty cylindrical second container; In a first processing step, the bottom of the second container is removed to open one end of the second container; a second processing step of forming a through hole in the second container; a connecting step of screwing the threaded portion of the adapter into the through hole and connecting a hose for sucking oil to the adapter; as well as A recovery process, in which the second container is arranged in the first container in a manner that the first injection port of the first container is covered by the end portion, and the air inside the first container is sucked in through the second injection port of the second container by a suction device, thereby recovering the oil sucked in from the hose to the first container through the first injection port.

19. The oil recovery method according to claim 18, wherein: After the recovery step, a closing step is further provided in which the second container is separated from the first container and a cap is attached to the first injection port.

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