Elevator Intelligent Oil Cup Device

Abstract

The present invention discloses an intelligent elevator oil cup device, which includes a housing, a cup cover, a fixing mechanism and an oil guiding mechanism. The housing is used to contain lubricating oil. The cup cover is movably arranged on the housing. The fixing mechanism is used to fix the housing on the car. The oil guiding mechanism is used to guide the lubricating oil onto the guide rail. The intelligent elevator oil cup device further includes: a guiding pipe, a float and a distance sensor. The guiding pipe is vertically fixed on the housing. There is a notch at the bottom of the guiding pipe, and the notch enables the lubricating oil to flow into the interior of the guiding pipe and makes the lubricating oil level inside the guiding pipe flush with the lubricating oil level inside the housing. The float is accommodated in the guiding pipe, and the float can float up and down with the change of the lubricating oil level. The distance sensor is fixed on the cup cover, and the fixed position corresponds to the upper opening of the guiding pipe, and is used to measure the distance between the distance sensor and the float.

Description

Technical Field

[0001] The present invention belongs to the technical field of elevators, and particularly relates to an intelligent oil cup device for elevators. Background Art

[0002] The elevator car is guided by guide rails. To maintain good lubrication between the sliding guide shoes and the guide rails, it is necessary to add oil to the guide rails through an oil cup. When the lubricating oil in the oil cup decreases, the oil cup is generally refilled during regular maintenance. Under some working conditions, the oil is used up quickly, the oil cup is damaged, or the oil refilling is forgotten during maintenance. In this way, regular maintenance cannot ensure that the guide rails are always in an oiled state.

[0003] Preferably, there must be an active monitoring device to monitor the oil quantity in the oil cup in real time. Once the oil cup is short of oil, the maintenance center can be remotely notified to send maintenance personnel to add oil. Currently, there is a method of using a TOF sensor to monitor the distance between the oil surface and the sensor transmitting end. However, in actual use, when the oil is just poured into an empty cup and enters together with the air, there will be a large number of air bubbles in the oil. The bubbles will refract the TOF infrared light, causing deviation in the flight time of the light returned by TOF and resulting in a decrease in ranging accuracy. Only after the air bubbles in the oil burst and gradually stabilize, and at this time, not affected by the bubbles, the test accuracy can meet the requirements. In order to check the measurement accuracy, the maintenance personnel often need to wait on site for more than 3 hours. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides an intelligent oil cup device for elevators, which includes a housing, a cup cover, a fixing mechanism, and an oil guiding mechanism. The housing is used to contain lubricating oil, the cup cover is movably arranged on the housing, the fixing mechanism is used to fix the housing on the car, and the oil guiding mechanism is used to guide the lubricating oil to the guide rails;

[0005] The intelligent oil cup device for elevators further includes: a guiding tube, a float, and a distance sensor;

[0006] The guiding tube is vertically fixed on the housing. There is a notch at the bottom of the guiding tube, and the notch enables the lubricating oil to flow into the interior of the guiding tube and makes the lubricating oil level inside the guiding tube flush with the lubricating oil level inside the housing;

[0007] The float is accommodated in the guiding tube, and the float can float up and down with the change of the lubricating oil level;

[0008] The distance sensor is fixed on the cup cover, and the fixed position corresponds to the upper opening of the guiding tube, and is used to measure the distance between the distance sensor and the float. The distance sensor further includes a control part and an output part. The control part is used to judge whether the distance is greater than a preset first threshold value, and outputs the judgment result to an external monitoring device through the output part.

[0009] Preferably, the distance sensor is a TOF sensor.

[0010] Preferably, the float is annular with a through hole in the middle.

[0011] Preferably, the upper opening of the guide tube includes a closing structure, and the closing structure can close the upper opening of the guide tube.

[0012] Preferably, the guide tube is black and the float is silver.

[0013] Preferably, the control unit is further configured to determine whether the change volatility of the distance is greater than a preset second threshold. When the change volatility of the distance is greater than the preset second threshold, the judgment result is output to an external monitoring device through the output unit.

[0014] Preferably, the control unit calculates the cumulative number of times that the change volatility of the distance is greater than a preset second threshold. When the cumulative number of times is greater than a third threshold, the judgment result is output to an external monitoring device through the output unit.

[0015] Compared with the prior art, the present invention can quickly and accurately determine the lubricating oil level and quickly meet the requirements of oil level detection accuracy. Further, the elevator intelligent oil cup device of the present invention can also detect the operating state of the elevator. When the vibration during elevator operation is abnormal, it is timely fed back to the remote maintenance center, and at the same time, intelligent diagnosis of elevator guide rail lubrication and running comfort is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Structural schematic diagram of the elevator intelligent oil cup device for Embodiment 1 and Embodiment 2;

[0017] Figure 2 Structural schematic diagram of the float in Embodiment 4. DETAILED DESCRIPTION OF THE INVENTION

[0018] Embodiment 1

[0019] As Figure 1 shown, the elevator intelligent oil cup device of this embodiment includes a housing 1, a cup cover 2, a fixing mechanism, and an oil guiding mechanism. The housing 1 is used to contain lubricating oil. The cup cover 2 is openably arranged on the housing 1. The fixing mechanism (not shown in the figure) is used to fix the housing 1 on the side of the car close to the guide rail, usually exemplarily fixed on the upper or lower part of the up-and-down sliding guide shoe device. The oil guiding mechanism (not shown in the figure) is used to guide the lubricating oil onto the guide rail.

[0020] In order to realize remote monitoring of the lubricating oil level in the elevator intelligent oil cup device, the elevator intelligent oil cup device further includes: a guide tube, a float, and a distance sensor;

[0021] The guide tube 4 is vertically fixed on the housing 1. There is a notch at the bottom of the guide tube 4, which allows lubricating oil to flow into the interior of the guide tube 4 and makes the lubricating oil level 6 inside the guide tube 4 flush with the lubricating oil level 6 inside the housing. An exemplary guide tube 4 can be fixed on a cylinder 7 formed by injection molding at the bottom of the housing. The material of the guide tube is the same as that of the housing, with a slightly smaller diameter at the lower part and a slightly larger diameter at the upper part. A notch is opened on the side of the bottom of the guide tube as an oil inlet hole, and the height of the oil inlet hole is higher than the cylinder 7 at the bottom of the housing. As long as the oil level is higher than the upper surface of the cylinder 7, it can enter the guide tube. Another exemplary guide tube 4 can be fixed on the side of the housing 1, and there is a notch at the bottom of the guide tube 4.

[0022] The float 5 is accommodated in the guide tube 4, such as a hollow small ball. The float 5 can float up and down with the change of the lubricating oil level.

[0023] The distance sensor 3 is fixed on the cup lid 2, and the fixed position corresponds to the upper opening of the guide tube 4, for measuring the distance between the distance sensor 3 and the float 5. In this embodiment, the distance sensor 3 is a TOF sensor 3. For example, a threaded hole is injection molded in the middle of the cup lid 2, and the center of the hole is aligned with the center of the guide tube 4. The transmitting end of the TOF sensor 3 has an external thread, and the external thread is used to screw into the threaded hole. After the oil cup is filled with oil, oil enters the guide tube 4, and the buoyancy of the oil causes the hollow small ball 5 to move upward, and the distance between the small ball 5 and the TOF sensor 3 changes.

[0024] The distance sensor 3 further includes a control part and an output part. The control part is used to judge whether the distance is greater than a preset first threshold value, and outputs the judgment result to an external monitoring device through the output part. The first threshold value is the distance between the float 5 and the TOF sensor 3 when the lowest oil level is measured by the TOF sensor 3. Then, the TOF sensor 3 outputs the judgment result that the oil level of the oil cup device is too low to the external monitoring device in a wired or wireless manner through the output part. For example, it is transmitted to the maintenance service center. After receiving the information, the maintenance service center sends an oil injection command to the maintenance personnel as needed. The output part can also directly transmit the data to the on-site maintenance device.

[0025] Preferably, the control part is further used to judge whether the change volatility of the distance is greater than a preset second threshold value. When the change volatility of the distance is greater than the preset second threshold value, the judgment result is output to the external monitoring device through the output part.

[0026] An exemplary method for judging whether the change volatility of the distance is greater than a preset second threshold value is as follows:

[0027] During the operation of the elevator, the vertical and horizontal vibrations will cause the lubricating oil level 6 in the oil cup device to shake, resulting in a change in the distance between the distance sensor 3 and the float 5. Therefore, when the elevator is installed or maintained and has good vibration, the distance measured by the distance sensor (i.e., the distance between the float and the TOF sensor) can be recorded throughout the entire operation cycle of the elevator, forming a curve with time as the abscissa and distance as the ordinate. Then, calculate the change volatility of the distance per unit time, and take 120% of the maximum value of the change volatility as the preset second threshold. During the uniform operation section of the subsequent service operation of the elevator, measure and judge in real time whether the change volatility of the distance is greater than the preset second threshold. If it is greater than the preset second threshold, the judgment result is output to the external monitoring device (such as the maintenance service center) through the output unit, indicating that the vibration during the uniform operation of the elevator is abnormal and fault diagnosis or maintenance is required.

[0028] Preferably, the control unit calculates the cumulative number of times that the change volatility of the distance is greater than the preset second threshold. When the cumulative number of times is greater than the third threshold, the judgment result is output to the external monitoring device through the output unit.

[0029] Continuing with the above example, the third threshold is set to 5 times or 10 times. Only when the cumulative number of times that the change volatility of the distance is greater than the preset second threshold is greater than 5 times or 10 times, the judgment result is output to the external monitoring device through the output unit. This avoids abnormal vibration during operation caused by accidental external factors.

[0030] Embodiment 2

[0031] The difference between Embodiment 2 and Embodiment 1 is that the color of the guide tube 4 and the color of the float 5 are significantly distinguished. A black guide tube and a silver float are used. In this way, the TOF infrared light that shoots outside the float is absorbed by the black, and the return time will be significantly different from the silver return time, making it easier to distinguish the distance from the float to the emission surface of the TOF sensor.

[0032] Embodiment 3

[0033] The difference between Embodiment 3 and Embodiment 1 is that the upper opening of the guide tube further includes a closing structure (not shown in the figure), and the closing structure can close the upper opening of the guide tube. When refueling, the upper opening of the guide tube is closed through the closing structure, and the oil will not enter the inside of the guide tube from above, and the float will not be interfered by the oil injected from above.

[0034] Embodiment 4

[0035] The difference between Embodiment 4 and Embodiment 1 is that the float is circular ring-shaped, such as Figure 2 , and there is a through hole in the middle. In this way, even if there is oil pouring from above, the oil can flow down to the bottom of the cup through the through hole and will not affect the buoyancy of the float.

Claims

1. An intelligent elevator oil cup device, comprising a housing, a cup cover, a fixing mechanism and an oil guiding mechanism. The housing is used to contain lubricating oil. The cup cover is movably arranged on the housing. The fixing mechanism is used to fix the housing on the car. The oil guiding mechanism is used to guide the lubricating oil onto the guide rail, and is characterized in that: The intelligent elevator oil cup device further comprises: a guiding tube, a float and a distance sensor; The guiding tube is vertically fixed on the housing. There is a notch at the bottom of the guiding tube, which enables the lubricating oil to flow into the interior of the guiding tube and makes the lubricating oil level inside the guiding tube flush with the lubricating oil level inside the housing; The float is accommodated in the guiding tube and can float up and down with the change of the lubricating oil level; The distance sensor is fixed on the cup cover, and the fixed position corresponds to the upper opening of the guiding tube, and is used to measure the distance between the distance sensor and the float. The distance sensor further comprises a control part and an output part. The control part is used to judge whether the distance is greater than a preset first threshold value, and outputs the judgment result to an external monitoring device through the output part; The control part is further used to judge whether the change volatility of the distance is greater than a preset second threshold value. When the change volatility of the distance is greater than the preset second threshold value, the judgment result is output to an external monitoring device through the output part.

2. The intelligent elevator oil cup device according to claim 1, characterized in that: The distance sensor is a TOF sensor.

3. The intelligent elevator oil cup device according to claim 1, characterized in that: The float is circular ring-shaped and has a through hole in the middle.

4. The intelligent elevator oil cup device according to claim 1, characterized in that: The upper opening of the guiding tube includes a closing structure, and the closing structure can close the upper opening of the guiding tube.

5. The intelligent elevator oil cup device according to claim 2, characterized in that: The guiding tube is black and the float is silver.

6. The intelligent elevator oil cup device according to claim 1, characterized in that: The control part calculates the cumulative number of times that the change volatility of the distance is greater than a preset second threshold value. When the cumulative number of times is greater than a third threshold value, the judgment result is output to an external monitoring device through the output part.

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