Gear oil replacement device

Abstract

To provide a gear oil replacement device whose structure can be simplified.SOLUTION: A gear oil replacement device comprises: an attachment part 4 attached to a gear case 1, and in which a flow passage 401 through which gear oil 7 discharged from a discharge port 105 formed in the gear case 1 flows is formed; and a flow passage opening / closing part 5 provided in the attachment part 4, and for opening / closing the flow passage 401. The attachment part 4 comprises a fitting part 404 fitted into the discharge port 105 of the gear case 1. The fitting part 404 is fitted into the discharge port 105, and thereby the attachment part 4 is attached to the gear case 1.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to a gear oil change device. [Background technology]

[0002] Conventionally, a gear oil replacement device is known that includes a flow path portion, an electromagnet device, a handle, and a flow path opening / closing portion. The flow path portion has a flow path through which gear oil discharged from a discharge port of the gear case flows. The electromagnet device fixes the flow path portion to the gear case using magnetic force. The handle is provided on the flow path portion. The handle is attached to a cap screw fitted to the discharge port of the gear case. An operator operates the handle to remove the cap screw from the discharge port. When the cap screw is removed from the discharge port, the gear oil is discharged from the discharge port of the gear case, and the gear oil discharged from the discharge port of the gear case enters the flow path of the flow path portion. The flow path opening / closing portion opens and closes the flow path of the flow path portion. When the flow path of the flow path portion is opened, the gear oil that has entered the flow path of the flow path portion flows through the flow path of the flow path portion and is discharged from the flow path of the flow path portion. The gear oil discharged from the flow path of the flow path portion is stored in a storage container arranged outside the flow path portion (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-122486 Summary of the Invention [Problem to be solved by the invention]

[0004] However, an electromagnet device is provided on the flow passage portion to fix the flow passage portion to the gear case, and a handle is provided on the flow passage portion to remove the cover screw fitted on the outlet of the gear case from the gear case, which causes a problem that the configuration of the gear oil replacement device becomes complicated.

[0005] The present disclosure has been made to solve the above-mentioned problems, and has an object to provide a gear oil replacement device that can simplify the configuration of the gear oil replacement device. [Means for solving the problem]

[0006] The gear oil replacement device according to the present disclosure includes a mounting part that is attached to a gear case and has a flow path through which gear oil discharged from a discharge port formed in the gear case flows, and a flow path opening / closing part that is provided in the mounting part and opens and closes the flow path. a gear oil delivery device that delivers the gear oil stored in the gear case toward a flow path in the attachment portion; The mounting portion has a fitting portion that is fitted into the exhaust port of the gear case, and the mounting portion is attached to the gear case by fitting the fitting portion into the exhaust port. The sending device has a fan provided on the mounting part, and when the mounting part is attached to the gear case, the fan is disposed inside the gear case, and the gear oil stored in the gear case is sent out toward the flow path of the mounting part by the rotation of the fan. do. Effect of the Invention

[0007] According to the gear oil replacement device according to the present disclosure, the configuration of the gear oil replacement device can be simplified. [Brief description of the drawings]

[0008] [Figure 1] 1 is a front view showing a gear device to which a gear oil replacement device according to a first embodiment is attached. FIG. [Diagram 2] FIG. 1 is a side view showing a gear oil replacement device according to a first embodiment. [Diagram 3] 3 is a diagram showing a state in which gear oil is discharged from the gear case in FIG. 2. FIG. [Figure 4] FIG. 11 is a side view showing a gear oil change device according to a second embodiment. [Diagram 5] FIG. 5 is a block diagram showing the transmission device of FIG. [Figure 6] FIG. 11 is a side view showing a gear oil change device according to a third embodiment. [Figure 7] FIG. 7 is a block diagram showing the heating device of FIG. 6. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Embodiment 1 FIG. 1 is a front view showing a gear device to which a gear oil replacement device according to a first embodiment is attached. The gear device is used in an elevator reducer. The gear device is connected to a motor (not shown) and a hoist (not shown). The gear device transmits a rotational force generated in the motor to the hoist. The hoist rotates when the rotational force generated in the motor is transmitted to the hoist via the gear device.

[0010] The gear device includes a gear case 1, an oil filler cap 2, a worm input shaft 3, a worm (not shown), and a worm gear (not shown).

[0011] The gear case 1 has a worm storage section 101 and a worm gear storage section 102. A worm is rotatably stored in the internal space of the worm storage section 101. A worm gear is rotatably stored in the internal space of the worm gear storage section 102. The worm and the worm gear mesh with each other. A lower part of the worm gear is stored in the worm storage section 101.

[0012] A worm input shaft 3 is connected to the worm. The rotational force of the motor is transmitted to the worm input shaft 3. The worm input shaft 3 rotates as the rotation of the motor is transmitted to the worm input shaft 3. The rotation of the worm input shaft 3 rotates the worm. The rotation of the worm rotates the worm gear. A hoist is connected to the worm gear. Therefore, the rotation of the worm gear rotates the hoist.

[0013] The internal space of the worm accommodating portion 101 and the internal space of the worm gear accommodating portion 102 are connected to each other. Gear oil is poured into each of the internal spaces of the worm accommodating portion 101 and the worm gear accommodating portion 102.

[0014] The worm gear storage section 102 has a gear case body 103 and a gear cover 104. The gear case body 103 is formed integrally with the worm storage section 101. The gear cover 104 is disposed above the gear case body 103. The gear cover 104 is rotatable about a rotation axis (not shown).

[0015] The gear cover 104 moves between an open position and a closed position by rotating about a rotation axis. When the gear cover 104 is in the open position, the upper part of the worm gear is exposed. On the other hand, when the gear cover 104 is in the closed position, the upper part of the worm gear is covered by the gear cover 104.

[0016] When maintenance and inspection of the worm gear is to be performed, the operator places the gear cover 104 in the open position. When maintenance and inspection of the worm gear is completed, the operator places the gear cover 104 in the closed position.

[0017] A fuel filler port (not shown) is formed in the gear cover 104. Gear oil is poured through the fuel filler port of the gear cover 104. The fuel filler port cover 2 is removably fitted to the fuel filler port of the gear cover 104. When gear oil is poured into the gear case 1, the worker removes the fuel filler port cover 2 from the fuel filler port of the gear cover 104. When pouring of gear oil into the gear case 1 is completed, the worker fits the fuel filler port cover 2 onto the fuel filler port of the gear cover 104.

[0018] A discharge port 105 is formed in the worm storage section 101. When the gear oil stored in the gear case 1 is replaced, the old gear oil stored in the gear case 1 is discharged from the discharge port 105 of the gear case 1.

[0019] Fig. 2 is a side view showing the gear oil change device according to the embodiment 1. Fig. 2 also shows a part of the worm storage section 101 of the gear case 1. The gear oil change device according to the embodiment 1 includes an attachment section 4, a flow path opening / closing section 5, and a storage container 6.

[0020] The attachment portion 4 is attached to the worm housing portion 101 of the gear case 1. The attachment portion 4 is formed with a flow passage 401 through which the gear oil discharged from the gear case 1 flows.

[0021] The mounting portion 4 has a diameter changing portion 402 and a mounting portion main body 403. The diameter changing portion 402 is attached to the gear case 1. The mounting portion main body 403 is attached to the diameter changing portion 402.

[0022] The aperture change part 402 has a fitting part 404 that fits into the discharge port 105 of the gear case 1, and a first flow path part 405 to which the mounting part main body 403 is attached. The aperture change part 402 is attached to the gear case 1 by fitting the fitting part 404 into the discharge port 105 of the gear case 1.

[0023] The fitting portion 404 is formed in a cylindrical shape. A screw groove 406 is formed on the outer peripheral surface of the fitting portion 404. A screw groove 106 is formed on the inner peripheral surface of the discharge port 105. The fitting portion 404 rotates about a central axis L1 of the fitting portion 404, whereby the outer peripheral surface of the fitting portion 404 is attached to and detached from the inner peripheral surface of the discharge port 105.

[0024] A through hole 407 is formed in first flow path section 405. Through hole 407 is a portion of flow path 401 that is formed in first flow path section 405.

[0025] The attachment body 403 has a fitting portion 408 that fits into the through hole 407 of the first flow path portion 405, and a second flow path portion 409 in which the flow path opening / closing portion 5 is provided. The attachment body 403 is attached to the aperture change portion 402 by fitting the fitting portion 408 into the through hole 407.

[0026] The fitting portion 408 is formed in a cylindrical shape. A screw groove 410 is formed on the outer peripheral surface of the fitting portion 408. A screw groove (not shown) is formed on the inner peripheral surface of the through hole 407 of the first flow path portion 405. The fitting portion 408 rotates about a central axis L2 of the fitting portion 408, whereby the outer peripheral surface of the fitting portion 408 is attached to and detached from the inner peripheral surface of the through hole 407.

[0027] The outer diameter of the fitting portion 408 is larger than the outer diameter of the fitting portion 404. Therefore, the outer diameter of the fitting portion 408 is larger than the diameter of the discharge port 105. The aperture change portion 402 is used when the outer diameter of the fitting portion 408 does not match the diameter of the discharge port 105. Therefore, when the outer diameter of the fitting portion 408 matches the diameter of the discharge port 105, the aperture change portion 402 is not used. In this case, the fitting portion 408 rotates about the central axis L2 of the fitting portion 408, so that the outer peripheral surface of the fitting portion 408 is attached to and detached from the inner peripheral surface of the discharge port 105.

[0028] The flow path opening and closing unit 5 is provided on the attachment body 403. The flow path opening and closing unit 5 opens and closes a portion of the flow path 401 that is formed on the attachment body 403. The flow path opening and closing unit 5 has a handle 501 and an opening and closing lever (not shown).

[0029] The handle 501 is operated by an operator. By operating the handle 501, the opening / closing lever opens and closes the flow path 401. The opening / closing lever can adjust the size of the flow path cross-sectional area of ​​the flow path 401 steplessly. Therefore, the flow path opening / closing unit 5 can adjust the size of the flow path cross-sectional area of ​​the flow path 401 steplessly.

[0030] The reservoir 6 is disposed below the mounting portion 4. In the reservoir 6, the gear oil discharged from the mounting portion 4 is stored.

[0031] Fig. 3 is a diagram showing a state in which the gear oil 7 is discharged from the gear case 1 in Fig. 2. When the flow path opening and closing unit 5 closes the flow path 401, the gear oil 7 is in a portion of the flow path 401 upstream of the opening and closing lever of the flow path opening and closing unit 5, and the gear oil 7 is not present in a portion of the flow path 401 downstream of the opening and closing lever of the flow path opening and closing unit 5.

[0032] In the maintenance work of replacing the gear oil 7 in the gear case 1, first, the old gear oil 7 stored in the gear case 1 is drained from the gear case 1.

[0033] In maintenance work for discharging the gear oil 7 from the gear case 1, an operator operates the handle 501 so that the flow path opening / closing unit 5 opens the flow path 401. This causes the gear oil 7 contained in the flow path 401 to flow through the flow path 401 and be discharged from the flow path 401. Also, the gear oil 7 stored in the gear case 1 enters the flow path 401, flows through the flow path 401, and is discharged from the flow path 401.

[0034] The gear oil 7 discharged from the flow path 401 is stored in the storage container 6. When the storage container 6 is filled with the gear oil 7, the operator operates the handle 501, and the flow path opening and closing unit 5 closes the flow path 401. This stops the discharge of the gear oil 7 from the flow path 401.

[0035] With the discharge of the gear oil 7 from the flow path 401 stopped, the gear oil 7 stored in the storage container 6 is transferred to a tank (not shown). Thereafter, the empty storage container 6 is placed below the mounting part 4, and an operator operates the handle 501 to cause the flow path opening / closing part 5 to open the flow path 401. The flow path opening / closing part 5 repeatedly opens and closes the flow path 401 until all of the gear oil 7 stored in the gear case 1 is discharged from the gear case 1.

[0036] When all of the gear oil 7 stored in the gear case 1 has been discharged from the gear case 1 , the operator operates the handle 501 so that the flow path opening / closing unit 5 closes the flow path 401 .

[0037] Thereafter, new gear oil 7 is poured into the gear case 1. The gear oil 7 is poured into the gear case 1 through the oil filler port of the gear cover 104. When the pouring of the gear oil 7 into the gear case 1 is completed, the maintenance work of replacing the gear oil in the gear case 1 is completed.

[0038] If dirt is attached to the inner wall of the gear case 1, cleaning oil is injected into the gear case 1 after the old gear oil 7 is discharged from the gear case 1 and before new gear oil 7 is injected into the gear case 1. The injection of cleaning oil into the gear case 1 is performed by injecting the cleaning oil from the oil inlet of the gear cover 104. After the cleaning oil removes dirt attached to the inside of the gear case 1, the cleaning oil is discharged from the gear case 1. The cleaning oil is discharged from the gear case 1 via a gear oil replacement device, similar to the discharge of the old gear oil 7 from the gear case 1.

[0039] As described above, the gear oil replacement device according to the first embodiment includes the attachment portion 4 and the flow path opening / closing portion 5. The attachment portion 4 is attached to the gear case 1. The attachment portion 4 is formed with a flow path 401 through which the gear oil 7 discharged from the gear case 1 flows. The flow path opening / closing portion 5 is provided on the attachment portion 4. The flow path opening / closing portion 5 opens and closes the flow path 401 of the attachment portion 4. The attachment portion 4 has a fitting portion 404 that is fitted into the discharge port 105 formed in the gear case 1. The fitting portion 404 is fitted into the discharge port 105, whereby the attachment portion 4 is attached to the gear case 1. According to this configuration, a member for attaching the attachment portion 4 to the gear case 1 is not required, and a member for operating the cover screw for opening and closing the discharge port 105 is not required. This makes it possible to simplify the configuration of the gear oil replacement device.

[0040] Moreover, the fitting portion 404 is formed in a cylindrical shape, a screw groove 406 is formed on the outer circumferential surface of the fitting portion 404, and the outer circumferential surface of the fitting portion 404 is attached to and detached from the inner circumferential surface of the outlet 105 by rotating the fitting portion 404 about the central axis L1 of the fitting portion 404. According to this configuration, the mounting portion 4 can be attached to the gear case 1 with a simple configuration.

[0041] In addition, the flow path opening / closing unit 5 is capable of adjusting the size of the flow path cross-sectional area of ​​the flow path 401. According to this configuration, the flow rate of the gear oil 7 flowing through the flow path 401 can be adjusted by adjusting the size of the flow path cross-sectional area of ​​the flow path 401. When the flow path cross-sectional area of ​​the flow path 401 is constant, the flow rate of the gear oil 7 flowing through the flow path 401 decreases as the amount of gear oil 7 stored in the gear case 1 decreases. Therefore, by adjusting the size of the flow path cross-sectional area of ​​the flow path 401 in response to the amount of gear oil 7 stored in the gear case 1, it is possible to suppress a decrease in the flow rate of the gear oil 7 flowing through the flow path 401.

[0042] In the gear oil replacement device according to the first embodiment, the configuration in which the operator judges whether the storage container 6 is filled with the gear oil 7 has been described. However, the determination device may be provided with a determination device for determining whether the storage container 6 is filled with the gear oil 7. In this case, the determination device may have an oil amount measuring device for measuring the amount of the gear oil 7 stored in the storage container 6, and a determination device main body for determining whether the storage container 6 is filled with the gear oil 7 based on the measurement result of the oil amount measuring device. In this case, the determination device may be provided with an opening / closing drive device for causing the flow path opening / closing unit 5 to open and close the flow path 401 based on the judgment result of the judgment device. Specifically, when the judgment device judges that the storage container 6 is filled with the gear oil 7, the opening / closing drive device causes the flow path opening / closing unit 5 to close the flow path 401. This eliminates the need for the operator to judge whether the storage container 6 is filled with the gear oil 7, and the overflow of the gear oil 7 from the storage container 6 can be suppressed.

[0043] Embodiment 2 Fig. 4 is a side view showing a gear oil change device according to embodiment 2. Fig. 4 also shows a part of the worm storage section 101 of the gear case 1. The gear oil change device according to embodiment 2 includes a delivery device 8. The delivery device 8 delivers the gear oil 7 stored in the gear case 1 toward the flow path 401 of the attachment section 4.

[0044] Fig. 5 is a block diagram showing the transmission device 8 of Fig. 4. The transmission device 8 has a fan 801, a drive unit 802 that rotates the fan 801, a transmission control unit 803 that controls the driving of the drive unit 802, and a transmission switch 804 that is operated by an operator.

[0045] The fan 801 is provided on the mounting part 4. When the mounting part 4 is attached to the gear case 1, the fan 801 is disposed inside the gear case 1. When the fan 801 rotates, the gear oil 7 stored in the gear case 1 is sent out toward the flow path 401 of the mounting part 4.

[0046] The driving unit 802 has a motor (not shown). When a current is supplied to the motor, the rotating shaft of the motor rotates. The fan 801 is connected to the rotating shaft of the motor. When the motor rotates, the fan 801 rotates.

[0047] The transmission control unit 803 controls the supply of current to the drive unit 802, thereby controlling the driving of the drive unit 802. The transmission control unit 803 controls the supply of current to the drive unit 802 based on the state of the transmission switch 804.

[0048] Specifically, when the state of the send-out switch 804 is in the OFF state, the send-out control unit 803 stops the drive unit 802. This stops the fan 801. On the other hand, when the state of the send-out switch 804 is in the ON state, the send-out control unit 803 drives the drive unit 802. This causes the fan 801 to rotate.

[0049] If the gear oil 7 stored in the gear case 1 is used for a long period of time, the viscosity of the gear oil 7 increases. Also, if the temperature of the gear oil 7 stored in the gear case 1 is low, the viscosity of the gear oil 7 increases. Also, if the elevator is started up many times, the viscosity of the gear oil 7 increases. In this example, the number of elevator starts refers to the number of times the elevator hoist is operated during a period in which the gear oil 7 is not changed.

[0050] When the viscosity of the gear oil 7 is high, it becomes difficult for the gear oil 7 to be discharged from the outlet 105 of the gear case 1. Therefore, it takes a long time to discharge the gear oil 7 from the outlet 105 of the gear case 1 when the viscosity of the gear oil 7 is high.

[0051] When the viscosity of the gear oil 7 is high, the worker operates the sending switch 804 to switch the state of the sending switch 804 from the OFF state to the ON state. This causes the sending control unit 803 to control the driving of the driving unit 802, and the fan 801 rotates. As the fan 801 rotates, the gear oil 7 stored in the gear case 1 is sent out toward the flow path 401 of the attachment unit 4. This makes it easier for the gear oil 7 to be discharged from the outlet 105 of the gear case 1.

[0052] When the discharge of the gear oil 7 from the discharge port 105 of the gear case 1 is completed, the worker operates the discharge switch 804 to switch the state of the discharge switch 804 from the ON state to the OFF state. As a result, the discharge control unit 803 controls the driving of the drive unit 802, and the fan 801 stops.

[0053] Other configurations of the gear oil change device according to the second embodiment are similar to those of the gear oil change device according to the first embodiment.

[0054] As described above, the gear oil replacement device according to the second embodiment includes the delivery device 8. The delivery device 8 delivers the gear oil 7 stored in the gear case 1 toward the flow path 401 of the attachment part 4. According to this configuration, the delivery device 8 delivers the gear oil 7 stored in the gear case 1 toward the flow path 401 of the attachment part 4. This makes it possible to easily discharge the gear oil 7 from the gear case 1 even if the gear oil 7 has high viscosity.

[0055] In the gear oil replacement device according to the second embodiment, the fan 801 is rotated by the operator operating the sending switch 804. However, the sending device 8 may have a viscosity measuring device that measures the viscosity of the gear oil 7 stored in the gear case 1, and the sending control unit 803 may control the driving of the driving unit 802 based on the measurement result of the viscosity measuring device to rotate the fan 801. In this case, the viscosity measuring device may measure the viscosity of the gear oil 7 by rotating the fan 801. In addition, in this case, the rotation speed of the fan 801 may be adjusted based on the measurement result of the viscosity measuring device. Specifically, when the viscosity of the gear oil 7 is high, the rotation speed of the fan 801 may be increased, and when the viscosity of the gear oil 7 is low, the rotation speed of the fan 801 may be decreased.

[0056] In addition, in the gear oil replacement device according to the second embodiment, the configuration has been described in which the fan 801 rotates when the operator operates the sending switch 804. However, the sending device 8 may have a temperature measuring device that measures the temperature of the gear oil 7 stored in the gear case 1, and the sending control unit 803 may control the driving of the driving unit 802 based on the measurement result of the temperature measuring device to rotate the fan 801. In this case, the temperature measuring device may measure the temperature of the gear oil 7 by measuring the temperature of the gear case 1. In addition, in this case, the rotation speed of the fan 801 may be adjusted based on the measurement result of the temperature measuring device. Specifically, when the temperature of the gear oil 7 is low, the rotation speed of the fan 801 may be increased, and when the temperature of the gear oil 7 is high, the rotation speed of the fan 801 may be decreased.

[0057] In addition, in the gear oil replacement device according to the second embodiment, the configuration has been described in which the fan 801 rotates when the operator operates the sending switch 804. However, the sending device 8 may be configured such that the sending control unit 803 controls the driving of the driving unit 802 based on the number of elevator startups to rotate the fan 801. In this case, information indicating the number of elevator startups is input from an elevator control panel (not shown) to the sending device 8. In this case, the rotation speed of the fan 801 may be adjusted based on the number of elevator startups. Specifically, when the elevator startups are frequent, the rotation speed of the fan 801 may be increased, and when the elevator startups are few, the rotation speed of the fan 801 may be decreased.

[0058] Embodiment 3 Fig. 6 is a side view showing a gear oil change device according to embodiment 3. Fig. 6 also shows a part of the worm storage section 101 of the gear case 1. The gear oil change device according to embodiment 3 includes a heating device 9. The heating device 9 heats the gear oil 7 stored in the gear case 1.

[0059] Fig. 7 is a block diagram showing the heating device 9 of Fig. 6. The heating device 9 has a heating unit 901, a power supply unit 902 that supplies current to the heating unit 901, a heating control unit 903 that controls the supply of current from the power supply unit 902 to the heating unit 901, and a heating switch 904 that is operated by an operator.

[0060] The heating part 901 is provided on the mounting part 4. When the mounting part 4 is attached to the gear case 1, the heating part 901 is disposed inside the gear case 1. The heating part 901 is composed of an electric heating wire. When an electric current is supplied to the heating part 901, the heating part 901 generates heat. When the heating part 901 generates heat, the gear oil 7 stored in the gear case 1 is heated.

[0061] The power supply unit 902 has a battery (not shown) and supplies the current stored in the battery to the heating unit 901.

[0062] The heating control unit 903 controls the supply of current from the power supply unit 902 to the heating unit 901 based on the state of the heating switch 904 .

[0063] Specifically, when the heating switch 904 is in the OFF state, the heating control unit 903 stops the supply of current from the power supply unit 902 to the heating unit 901. This stops the heating unit 901 from generating heat. On the other hand, when the heating switch 904 is in the ON state, the heating control unit 903 causes the power supply unit 902 to supply current to the heating unit 901. This causes the heating unit 901 to generate heat.

[0064] When the viscosity of the gear oil 7 is high, the operator operates the heating switch 904 to switch the state of the heating switch 904 from an OFF state to an ON state. This causes the heating control unit 903 to supply current from the power supply unit 902 to the heating unit 901, causing the heating unit 901 to generate heat. As the heating unit 901 generates heat, the gear oil 7 stored in the gear case 1 is heated. As the gear oil 7 stored in the gear case 1 is heated, the viscosity of the gear oil 7 decreases. This makes it easier for the gear oil 7 stored in the gear case 1 to be discharged from the discharge port 105 of the gear case 1.

[0065] When the gear oil 7 has been discharged from the discharge port 105 of the gear case 1, the operator operates the heating switch 904 to switch the state of the heating switch 904 from the on state to the off state, which causes the heating control unit 903 to stop supplying current from the power supply unit 902 to the heating unit 901, causing the heating unit 901 to stop generating heat.

[0066] Other configurations of the gear oil change device according to the third embodiment are similar to those of the gear oil change device according to the first embodiment. Like the gear oil change device according to the second embodiment, the gear oil change device according to the third embodiment may include a delivery device 8.

[0067] As described above, the gear oil replacement device according to the third embodiment includes the heating device 9. The heating device 9 heats the gear oil 7 stored in the gear case 1. According to this configuration, the heating device 9 heats the gear oil 7 stored in the gear case 1. As a result, when the viscosity of the gear oil 7 is high, the heating device 9 heats the gear oil 7, thereby making it possible to reduce the viscosity of the gear oil 7. As a result, the gear oil 7 can be easily discharged from the gear case 1.

[0068] In the gear oil replacement device according to the third embodiment, the heating unit 901 generates heat by operating the heating switch 904 by the operator. However, the heating device 9 may have a viscosity measuring device that measures the viscosity of the gear oil 7 stored in the gear case 1, and the heating unit 901 may heat the gear oil 7 based on the measurement result of the viscosity measuring device. The heating control unit 903 controls the supply of current from the power supply unit 902 to the heating unit 901 based on the measurement result of the viscosity measuring device. In this case, the amount of heat generated by the heating unit 901 may be adjusted based on the measurement result of the viscosity measuring device. Specifically, when the viscosity of the gear oil 7 is high, the amount of heat generated by the heating unit 901 may be increased, and when the viscosity of the gear oil 7 is low, the amount of heat generated by the heating unit 901 may be decreased.

[0069] In addition, in the gear oil replacement device according to the third embodiment, the configuration has been described in which the heating unit 901 generates heat by the operator operating the heating switch 904. However, the heating unit 9 may have a temperature measuring device that measures the temperature of the gear oil 7 stored in the gear case 1, and the heating unit 901 may generate heat based on the measurement result of the temperature measuring device. The heating control unit 903 controls the supply of current from the power supply unit 902 to the heating unit 901 based on the measurement result of the temperature measuring device. In this case, the temperature measuring device may measure the temperature of the gear oil 7 by measuring the temperature of the gear case 1. In this case, the amount of heat generated by the heating unit 901 may be adjusted based on the measurement result of the temperature measuring device. Specifically, when the temperature of the gear oil 7 is low, the amount of heat generated by the heating unit 901 may be increased, and when the temperature of the gear oil 7 is high, the amount of heat generated by the heating unit 901 may be decreased.

[0070] In addition, in the gear oil replacement device according to the third embodiment, the configuration has been described in which the heating unit 901 generates heat by the operator operating the heating switch 904. However, the heating device 9 may be configured such that the heating control unit 903 controls the supply of current from the power supply unit 902 to the heating unit 901 based on the number of elevator startups, causing the heating unit 901 to generate heat. In this case, information indicating the number of elevator startups is input from the elevator control panel to the heating device 9. In this case, the amount of heat generated by the heating unit 901 may be adjusted based on the number of elevator startups. Specifically, when the number of elevator startups is high, the amount of heat generated by the heating unit 901 may be increased, and when the number of elevator startups is low, the amount of heat generated by the heating unit 901 may be decreased.

[0071] In the gear oil replacement device according to the third embodiment, the heating unit 901 is disposed inside the gear case 1 when the mounting unit 4 is attached to the gear case 1. However, the heating unit 901 may be disposed on the outer circumferential surface of the gear case 1. In this case, the heating unit 901 heats the gear case 1, thereby heating the gear oil 7 stored in the gear case 1. [Explanation of symbols]

[0072] 1 gear case, 2 oil filler cap, 3 worm input shaft, 4 mounting portion, 5 flow path opening / closing portion, 6 storage container, 7 gear oil, 8 delivery device, 9 heating device, 101 worm storage portion, 102 worm gear storage portion, 103 gear case body, 104 gear cover, 105 discharge port, 106 screw groove, 401 flow path, 402 caliber change portion, 403 mounting portion body, 404 fitting portion, 405 first flow path portion, 406 screw groove, 407 through hole, 408 fitting portion, 409 second flow path portion, 410 screw groove, 501 handle, 801 fan, 802 drive portion, 803 delivery control portion, 804 delivery switch, 901 heating portion, 902 power supply portion, 903 heating control portion, 904 heating switch.

Claims

1. a mounting portion attached to the gear case and having a flow path through which gear oil discharged from a discharge port formed in the gear case flows; a flow passage opening / closing unit provided on the attachment unit and configured to open and close the flow passage; a delivery device that delivers the gear oil stored in the gear case toward the flow path of the attachment portion; Equipped with The mounting portion has a fitting portion that is fitted into the exhaust port of the gear case, The fitting portion is fitted into the exhaust port, whereby the mounting portion is attached to the gear case, The sending device has a fan provided on the mounting portion, When the mounting portion is attached to the gear case, the fan is positioned inside the gear case, and as the fan rotates, the gear oil stored in the gear case is sent out toward the flow path of the mounting portion.

2. The fitting portion is formed in a cylindrical shape, A screw groove is formed on the outer circumferential surface of the fitting portion, 2. The gear oil replacement device according to claim 1, wherein the outer circumferential surface of the fitting portion is attached to and detached from the inner circumferential surface of the outlet by rotating the fitting portion about a central axis of the fitting portion.

3. 3. The gear oil replacement device according to claim 1, wherein the flow passage opening / closing portion is capable of adjusting a flow passage cross-sectional area of ​​the flow passage.

4. 4. The gear oil replacement device according to claim 1, further comprising a heating device for heating the gear oil stored in the gear case.

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