Lubricating system of lifting device

Abstract

The utility model provides a lubricating system of a lifting device, which comprises an oil supplementing part, a lubricating part and a lubricating part, the oil injection pieces are arranged in parallel; each oil injection part comprises a storage barrel, an oil injection pump and a liquid level detector; the storage barrel is communicated with the oil supplementing pump so as to receive grease provided by the storage container, and the liquid level detector is used for detecting the liquid level of the grease in the storage barrel; the plurality of distribution pieces are arranged in one-to-one correspondence with the plurality of oil injection pieces; each distribution part is connected with an outlet of the corresponding oil filling pump and is used for distributing grease pumped out by the oil filling pump; the spraying pieces are connected with the distribution piece and used for receiving and spraying grease outwards; each distribution piece is connected with a plurality of spraying pieces; and the controller is in communication connection with the liquid level detector and the oil supplementing pump, and the controller is used for receiving a liquid level signal of the liquid level detector and outputting an opening and closing signal to the oil supplementing pump.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding design technology, and in particular to a lubrication system for a lifting device. Background Technology

[0002] For ships or offshore engineering platforms that navigate or operate at sea and are equipped with lifting devices and legs, lubricating oil needs to be applied to the lifting gears of the lifting device to reduce friction during the lifting process. The lubrication of the lifting gears directly affects the safety performance of the ship or platform.

[0003] Current lubrication systems are not equipped with an oil replenishment mechanism. In actual operation, oil tank replenishment is cumbersome and lacks automation. Utility Model Content

[0004] The purpose of this invention is to provide a lubrication system for a lifting device that can automatically replenish oil, thereby solving the problems of the prior art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a lubrication system for a lifting device, comprising:

[0006] The oil replenishment device includes an oil replenishment pump and a storage container for storing oil;

[0007] Multiple oiling components are connected in parallel; each oiling component includes a storage tank, an oiling pump, and a level detector; the storage tank is connected to the oil replenishment pump to receive grease supplied by the storage tank, and the level detector is used to detect the level of grease in the storage tank;

[0008] Multiple distribution components are provided, each corresponding to one of the multiple oil injection components; each distribution component is connected to the outlet of the corresponding oil injection pump and is used to distribute the grease pumped out by the oil injection pump.

[0009] Multiple spray nozzles are connected to the distribution unit for receiving and spraying grease outwards; each distribution unit is connected to multiple spray nozzles.

[0010] The controller is communicatively connected to the level detector and the replenishment pump. The controller is used to receive the level signal from the level detector and output an opening / closing signal to the replenishment pump.

[0011] In one embodiment, a first control valve is provided between each of the storage tanks and the oil replenishment pump. The first control valve is communicatively connected to a liquid level detector in the storage tank and is used to open and close according to the signal from the liquid level detector.

[0012] In one embodiment, the oil pump is driven by a variable frequency electric motor, and the controller is communicatively connected to the variable frequency electric motor to adjust the frequency of the variable frequency electric motor.

[0013] In one embodiment, a second control valve is provided between each of the oil injection pumps and the corresponding distribution component. The second control valve is communicatively connected to the controller, which is used to control the opening and closing of the second control valve.

[0014] In one embodiment, the distribution component includes a first distribution valve and a plurality of second distribution valves, each disposed downstream of the first distribution valve, and a plurality of injection components are disposed downstream of each of the second distribution valves.

[0015] In one embodiment, a flow detector is provided between the second distribution valve and the injection element. The flow detector is used to detect the flow rate and is communicatively connected to the controller. The controller is used to receive signals from the flow detector and issue alarms.

[0016] In one embodiment, the dispensing unit includes a circulation monitor for detecting the operating status of the first dispensing valve, the circulation monitor being communicatively connected to the controller, the controller being used to receive signals from the circulation monitor and to issue alarms.

[0017] In one embodiment, the first distribution valve is a progressive plunger distributor;

[0018] The second distribution valve is a progressive plunger distributor.

[0019] In one embodiment, the controller is communicatively connected to the lifting device to receive the operating speed signal of the lifting device and control the flow rate of the grease pumped out by the oil injection pump.

[0020] The flow rate of grease pumped out by the oil pump is positively correlated with the operating speed of the lifting device.

[0021] In one embodiment, the outlet pressure of the replenishing pump is 10 MPa to 20 MPa;

[0022] The outlet pressure of the oil injection pump is 10 MPa to 40 MPa;

[0023] Each of the aforementioned spraying components includes multiple spray nozzles.

[0024] As can be seen from the above technical solution, this utility model has at least the following advantages and positive effects:

[0025] The lubrication system of this lifting device includes an oil replenishing component, multiple oil injection components, multiple distribution components, multiple spraying components, and a controller. When the grease level in the storage tank of the oil injection component is too low, the oil replenishing pump starts, and grease is injected from the storage container into the storage tank via the oil replenishing pump. When the grease level in the storage tank recovers, the oil replenishing pump stops working. Therefore, automatic oil replenishment of the entire lubrication system is achieved, saving labor costs, saving time, and improving efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the lubrication system of the lifting device in this utility model.

[0027] Figure 2 yes Figure 2 A magnified schematic diagram of a local structure.

[0028] Figure 3 This is a schematic diagram of the structure of the injection component and the flow detector in this utility model.

[0029] The annotations in the attached figures are explained as follows:

[0030] 11. Oil replenishment component; 111. Storage container; 112. Oil replenishment pump; 12. Oil injection component; 121. Storage tank; 122. Oil injection pump; 123. Liquid level detector; 131. First distribution valve; 132. Second distribution valve; 14. Injection component; 141. Injection nozzle; 15. Controller; 16. First control valve; 17. Second control valve; 18. Flow detector; 19. Circulation monitor;

[0031] 21. Climbing equipment. Detailed Implementation

[0032] Although the present invention can be readily embodied in various forms, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of the present invention and is not intended to limit the present invention to what is described herein.

[0033] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0034] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various elements of this invention are relative rather than absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, these directional indications also change accordingly.

[0035] This application provides a lubrication system for a lifting device, which provides grease to the lifting device for lubrication.

[0036] Combination Figure 1 and Figure 2 The lifting device includes multiple sets of climbing equipment 21. Each climbing equipment 21 includes multiple climbing gears that mesh with the chord racks on the legs, thereby achieving lifting. For example, taking a four-legged self-elevating wind turbine installation vessel as an example, its legs are in the form of triangular trusses, each leg has three sets of chord racks, and each set of chord racks is equipped with one set of climbing equipment 21. In this embodiment, each set of climbing equipment 21 contains 16 climbing gears.

[0037] Continue to combine Figure 1 and Figure 2 The lubrication system of the lifting device (hereinafter referred to as the lubrication system) includes an oil replenishing component 11, multiple oil injection components 12, multiple distribution components, multiple spray components 14, and a controller 15. The oil replenishing component 11 includes an oil replenishing pump 112 and a storage container 111 for storing grease. Multiple oil injection components 12 are arranged in parallel. Each oil injection component 12 includes a storage tank 121, an oil injection pump 122, and a level detector 123. The storage tank 121 is connected to the oil replenishing pump 112 to receive grease supplied by the storage container 111, and the level detector 123 is used to detect the grease level in the storage tank 121. Multiple distribution components are arranged one-to-one with multiple oil injection components 12; each distribution component is connected to the outlet of the corresponding oil injection pump 122 to distribute the grease pumped out by the oil injection pump 122. Multiple spray components 14 are connected to the distribution components to receive and spray grease outwards; each distribution component is connected to multiple spray components 14. The controller 15 is communicatively connected to the level detector 123 and the oil replenishment pump 112. The controller 15 is used to receive the level signal from the level detector 123 and output the opening and closing signal to the oil replenishment pump 112.

[0038] That is, when the grease level in the storage tank 121 of the lubrication unit 12 is too low, the replenishing pump 112 starts, and grease is injected from the storage container 111 into the storage tank 121 via the replenishing pump 112. When the grease level in the storage tank 121 recovers, the replenishing pump 112 stops working. Therefore, automatic lubrication of the entire lubrication system is achieved, saving labor costs, saving time, and improving efficiency.

[0039] See Figure 1The oil replenishment component 11 includes an oil replenishment pump 112 and a storage container 111 for storing oil. The storage container 111 is a large-capacity container. For example, the volume of the storage container 111 is 1000L. Using a large-capacity storage container 111 greatly reduces the frequency of replacing the storage container 111.

[0040] The outlet pressure of the oil replenishment pump 112 is 10 MPa to 20 MPa, which enables the oil to be smoothly pumped from the storage container 111 to the storage tank 121 of the oil injection unit.

[0041] Multiple oiling components 12 are arranged in parallel. The number of oiling components 12 can be set according to actual needs. In this embodiment, the number of oiling components 12 is three. In other embodiments, the number of oiling components 12 can also be four, five, or other numbers.

[0042] Each oiling component 12 includes a storage tank 121, an oiling pump 122, and a level detector 123. The storage tank 121 is connected to the replenishment pump 112 to receive grease supplied by the storage container 111. The storage tanks 121 of the multiple oiling components 12 are all located downstream of the replenishment pump 112 and are connected to the replenishment pump 112.

[0043] The volume of storage tank 121 is smaller than that of storage container 111. Each storage tank 121 is connected to the oil replenishment pump 112 via a connecting pipe, thereby receiving the oil pumped out by the oil replenishment pump 112.

[0044] The storage tank 121 is equipped with a high level line and a low level line. That is, when the grease in the storage tank 121 reaches the low level line, grease needs to be added; when the grease in the storage tank 121 returns to the high level line, grease addition can be stopped.

[0045] The oil pump 122 is connected to the storage tank 121 to pump the grease out of the storage tank 121. The oil pump 122 is driven by a variable frequency electric motor. Therefore, the variable frequency electric motor drives the oil pump 122 at different frequencies, enabling the oil pump 122 to pump out different flow rates of grease.

[0046] The outlet pressure of the oil pump 122 is 10 MPa to 40 MPa. The outlet pressure of the oil pump 122 ensures that the grease can be pumped to the distribution unit.

[0047] The level detector 123 is used to detect the level of grease in the storage tank 121. After detecting the level, the level detector 123 sends a signal to the controller 15, so that the controller 15 can control the start and stop of the oil replenishment pump 112, thereby realizing automatic oil replenishment.

[0048] Multiple distribution components are provided in a one-to-one correspondence with multiple oiling components 12. That is, a distribution component is provided downstream of each oiling component 12. Each distribution component is connected to the outlet of the oiling pump 122 of the corresponding oiling component 12 and is used to distribute the grease pumped out by the oiling pump 122.

[0049] In this embodiment, there are three oil injection components 12 and three distribution components.

[0050] Specifically, the distribution component includes a first distribution valve 131 and a plurality of second distribution valves 132, each disposed downstream of the first distribution valve 131. In this embodiment, four second distribution valves 132 are disposed downstream of the first distribution valve 131. In other embodiments, the number of second distribution valves 132 may be three, five, or other, and the specific number of second distribution valves 132 is set according to actual needs.

[0051] In this embodiment, the first distribution valve 131 has four outlets. Each outlet is connected to a second distribution valve 132.

[0052] Each second distribution valve 132 has a plurality of injection elements 14 downstream. The plurality of injection elements 14 downstream of each second distribution valve 132 are arranged in parallel. In this embodiment, the number of injection elements 14 downstream of each second distribution valve 132 is four. In other embodiments, the number of injection elements 14 downstream of each second distribution valve 132 may also be three, five or other numbers.

[0053] The first distribution valve 131 is a progressive plunger distributor. The second distribution valve 132 is a progressive plunger distributor. The progressive plunger distributor has high reliability and high distribution accuracy, and can meet the multi-point, quantitative lubrication requirements of the lubrication system.

[0054] The spray element 14 is set in a one-to-one correspondence with the climbing gear of the climbing device 21, that is, each climbing gear is provided with a spray element 14.

[0055] See Figure 3 Each spray element 14 includes multiple spray nozzles 141. Therefore, a single spray element 14 can achieve multi-point spraying to meet the needs of multiple lubrication points.

[0056] The controller 15 is communicatively connected to the level detector 123 and the replenishing pump 112. The controller 15 is used to receive the level signal from the level detector 123 and output an opening / closing signal to the replenishing pump 112.

[0057] That is, when the level detector 123 detects that the grease level in the storage tank 121 has reached a low level, the level detector 123 sends this signal to the controller 15. After receiving the signal, the controller 15 controls the oil replenishment pump 112 to start, and the oil replenishment pump 112 starts working to pump the grease in the storage container 111 into the storage tank 121, realizing automatic oil replenishment. When the grease is replenished to a high level in the storage tank 121, the level detector 123 sends this signal to the controller 15. After receiving the signal, the controller 15 controls the oil replenishment pump 112 to shut down, that is, to stop working.

[0058] The controller 15 is communicatively connected to the variable frequency electric motor and is used to adjust the frequency of the variable frequency electric motor. Therefore, it can adjust the flow rate of grease pumped out by the oil pump 122.

[0059] The controller 15 is communicatively connected to the lifting device to receive the operating speed signal of the lifting device and control the flow rate of grease pumped by the oil injection pump 122. Specifically, the controller 15 controls and adjusts the frequency of the variable frequency electric motor based on the operating speed signal of the lifting device, thereby adjusting the flow rate pumped by the oil injection pump 122. The flow rate of grease pumped by the oil injection pump 122 is positively correlated with the operating speed of the lifting device. That is, the frequency of the variable frequency electric motor is positively correlated with the operating speed of the lifting device.

[0060] When the lifting device operates at a high speed, more grease is required. In this case, the controller 15 controls the variable frequency electric motor to adjust the frequency, enabling the oil pump 122 to pump out more grease. When the lifting device operates at a low speed, less grease is needed. In this case, the controller 15 controls the variable frequency electric motor to adjust the frequency, enabling the oil pump 122 to pump out less grease, thereby saving grease and greatly reducing the environmental impact of grease.

[0061] Furthermore, each storage tank 121 is also provided with a first control valve 16 between itself and the replenishment pump 112. The first control valve 16 is communicatively connected to the liquid level detector 123 in the storage tank 121, and is used to open and close according to the signal from the liquid level detector 123.

[0062] That is, when the level detector 123 detects that the grease level in the storage tank 121 has reached the low level line, the first control valve 16 opens, allowing the grease pumped by the replenishing pump 112 to enter the storage tank 121. Conversely, when the level detector 123 does not detect that the grease level in its corresponding storage tank 121 has reached the low level line, the first control valve 16 closes, and therefore the grease pumped by the replenishing pump 112 will not enter the storage tank 121.

[0063] The first control valve 16 is designed to make the oil replenishment between the multiple oil injection components 12 independent of each other, avoiding the phenomenon that the oil level of a certain oil injection component 12 is not very low and overflows after receiving grease, thus ensuring the safety of oil replenishment of the entire lubrication system.

[0064] A flow detector 18 is provided between the second distribution valve 132 and the injection element 14. The flow detector 18 is used to detect the flow rate and is communicatively connected to the controller 15. The controller 15 receives signals from the flow detector 18 and issues alarms. Specifically, when the flow detector 18 detects a flow rate less than a preset value, it indicates a blockage in the lubrication system. At this time, the controller 15 issues an alarm signal to alert the operator. Based on this alarm signal, the operator can accurately determine if there is an oil circuit fault, ensuring safety and reliability, greatly shortening fault diagnosis time, and improving efficiency. In this embodiment, the preset flow rate value is set according to the actual situation.

[0065] The component includes a circulation monitor 19 for detecting the operating status of the first distribution valve 131. The circulation monitor 19 is communicatively connected to the controller 15, which receives signals from the circulation monitor 19 and issues alarms. Specifically, the circulation monitor 19 tracks and records the operating time, number of cycles, and other operating statuses of the first distribution valve 131 in real time, and the controller 15 issues alarm signals based on the signals from the circulation monitor 19.

[0066] Specifically, the cycle monitor 19 is used to track and record the working status of the first distribution valve in real time, including whether it is operating normally, whether there is abnormal vibration or noise, etc.

[0067] The installation of the circulation monitor 19 helps to detect and resolve potential problems in a timely manner, ensuring the stable operation of the entire lubrication system.

[0068] Each oil pump 122 is preferably further provided with a second control valve 17 between itself and its corresponding distribution unit. The second control valve 17 is communicatively connected to the controller 15, which is used to control the opening and closing of the second control valve 17. The arrangement of the second control valve 17 allows the multiple distribution units to operate independently of each other.

[0069] In summary, this lubrication system has the following advantages:

[0070] 1. When the grease level in the storage tank 121 of the lubrication unit 12 is too low, the replenishing pump 112 starts, and grease is injected from the storage container 111 into the storage tank 121 via the replenishing pump 112. When the grease level in the storage tank 121 recovers, the replenishing pump 112 stops working. Therefore, automatic lubrication replenishment of the entire lubrication system is achieved, saving labor costs, saving time, and improving efficiency.

[0071] 2. Each storage tank 121 is also equipped with a first control valve 16 between itself and the oil replenishment pump 112. The first control valve 16 makes the oil replenishment function of the multiple oil injection components 12 independent of each other, avoiding the phenomenon that the oil level of a certain oil injection component 12 is not very low and overflows after receiving grease, thus ensuring the safety of oil replenishment of the entire lubrication system.

[0072] 3. The controller 15 is connected to the variable frequency electric motor for adjusting the frequency of the variable frequency electric motor, thereby adjusting the flow rate of the grease pumped by the oil pump 122, so as to output different flow rates of grease according to different needs.

[0073] 4. The setting of the flow detector 18 enables staff to accurately determine whether it is an oil circuit fault based on the alarm signal, which is safe and reliable, greatly shortens the fault diagnosis time, and improves efficiency.

[0074] 5. The installation of the circulation monitor 19 helps to detect and resolve potential problems in a timely manner, ensuring the stable operation of the entire lubrication system.

[0075] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A lubrication system for a lifting device, characterized in that, include: The oil replenishment device includes an oil replenishment pump and a storage container for storing oil; Multiple oiling components are connected in parallel; each oiling component includes a storage tank, an oiling pump, and a level detector; the storage tank is connected to the oil replenishment pump to receive grease supplied by the storage tank, and the level detector is used to detect the level of grease in the storage tank; Multiple distribution components are provided, each corresponding to one of the multiple oil injection components; each distribution component is connected to the outlet of the corresponding oil injection pump and is used to distribute the grease pumped out by the oil injection pump. Multiple spray nozzles are connected to the distribution unit for receiving and spraying grease outwards; each distribution unit is connected to multiple spray nozzles. The controller is communicatively connected to the level detector and the replenishment pump. The controller is used to receive the level signal from the level detector and output an opening / closing signal to the replenishment pump.

2. The lubrication system of the lifting device according to claim 1, characterized in that, Each of the storage tanks is further provided with a first control valve between itself and the oil replenishment pump. The first control valve is communicatively connected to the liquid level detector in the storage tank and is used to open and close according to the signal from the liquid level detector.

3. The lubrication system of the lifting device according to claim 1, characterized in that, The oil pump is driven by a variable frequency electric motor, and the controller is communicatively connected to the variable frequency electric motor to adjust the frequency of the variable frequency electric motor.

4. The lubrication system of the lifting device according to claim 1, characterized in that, Each of the oil injection pumps is further provided with a second control valve between itself and the corresponding distribution component. The second control valve is communicatively connected to the controller, which is used to control the opening and closing of the second control valve.

5. The lubrication system of the lifting device according to claim 1, characterized in that, The distribution component includes a first distribution valve and a plurality of second distribution valves, each disposed downstream of the first distribution valve, and a plurality of injection elements are disposed downstream of each of the second distribution valves.

6. The lubrication system of the lifting device according to claim 5, characterized in that, A flow detector is provided between the second distribution valve and the injection element. The flow detector is used to detect the flow rate. The flow detector is communicatively connected to the controller. The controller is used to receive the signal from the flow detector and issue an alarm.

7. The lubrication system of the lifting device according to claim 5, characterized in that, The distribution unit includes a circulation monitor for detecting the operating status of the first distribution valve. The circulation monitor is communicatively connected to the controller, which receives signals from the circulation monitor and issues alarms.

8. The lubrication system of the lifting device according to claim 5, characterized in that, The first distribution valve is a progressive plunger distributor; The second distribution valve is a progressive plunger distributor.

9. The lubrication system of the lifting device according to claim 1, characterized in that, The controller is communicatively connected to the lifting device to receive the operating speed signal of the lifting device and control the flow rate of the grease pumped out by the oil injection pump. The flow rate of grease pumped out by the oil pump is positively correlated with the operating speed of the lifting device.

10. The lubrication system of the lifting device according to claim 1, characterized in that, The outlet pressure of the replenishing pump is 10 MPa to 20 MPa; The outlet pressure of the oil injection pump is 10 MPa to 40 MPa; Each of the aforementioned spraying components includes multiple spray nozzles.

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