Metallurgical crane lubrication system

Abstract

The utility model discloses a metallurgical crane lubricating system, including lubricating oil supply module and multichannel distribution module, lubricating oil supply module includes high position supply module and low position supply module, and high position supply module sets up the compartment space of metallurgical crane cockpit, and low position supply module sets up on the wheel frame body of (120 5) mm from the wheel center line, low position supply module is hollow cylinder body structure, the bottom of low position supply module is provided with the oil filler neck, and the buffer device is fixedly arranged in low position supply module, high position supply module is the oil storage tank, and the outlet of high position supply module is connected with high pressure constant -flow pump import, and the outlet of high pressure constant -flow pump is connected with multichannel distribution module, and the outlet of multichannel distribution module is connected with low position supply module through branch pipeline at least two groups.

Description

Technical Field

[0001] This utility model belongs to the field of crane maintenance technology in the metallurgical industry, and specifically relates to a lubrication system for metallurgical cranes. Background Technology

[0002] Steel mills continuously operate cranes in harsh environments (high temperatures, dust, impact loads), resulting in common problems with their traveling mechanisms, including: uneven tracks (ground settlement causing track levelness deviations), wheel wear (wheel-rail lateral friction coefficient reaching 0.15-0.25), abnormal wear (wheel lifespan of only 6-8 months), and high operating resistance (increasing energy consumption by 15%-20%).

[0003] Existing technical solutions to address the defects: (1) Manual application of grease: requires machine shutdown and coverage rate <40%; (2) Centralized lubrication system: oil circuit is prone to blockage and installation cost is high; (3) Track spraying device: lubricating oil flash point <200℃ poses a fire risk.

[0004] Traditional oil guns cannot achieve continuous lubrication while moving, commercial automatic lubrication devices have insufficient temperature resistance (operating temperature > 150℃), and high-viscosity waste oil is difficult to supply with accurate metering.

[0005] In view of the above factors, a lubrication system for metallurgical cranes is provided for the lubrication and protection of crane wheels in steel plants under high temperature and high load conditions. Utility Model Content

[0006] The purpose of this invention is to provide a lubrication system for metallurgical cranes to solve the problems mentioned in the background art.

[0007] The purpose of this utility model is achieved through the following technical solution: a lubrication system for a metallurgical crane, including a lubricating oil supply module and a multi-channel distribution module. The lubricating oil supply module includes a high-level supply module and a low-level supply module. The high-level supply module is set in the partition space of the metallurgical crane cab, and the low-level supply module is set on the wheel frame body at a distance of (120±5) mm from the wheel centerline.

[0008] The low-position supply module has a hollow cylindrical structure, an oil inlet is provided at the bottom of the low-position supply module, and a buffer device is fixedly installed inside the low-position supply module.

[0009] The high-level supply module is an oil storage tank. The outlet of the high-level supply module is connected to the inlet of a high-pressure metering pump. The outlet of the high-pressure metering pump is connected to a multi-channel distribution module. At least two of the outlets of the multi-channel distribution module are connected to the low-level supply module through branch pipelines.

[0010] Furthermore, the multi-path distribution module includes at least one progressive distributor and a corresponding number of flow sensors, with the outlet of each progressive distributor connected to a lubrication point of a metallurgical crane via a branch pipeline.

[0011] Furthermore, the buffer device is a spiral guide vane, which includes a first spiral guide section and a second spiral guide section.

[0012] Furthermore, the first spiral guide portion is detachably connected to the low-position supply module, and the second spiral guide portion is fixedly disposed at the bottom of the low-position supply module.

[0013] Furthermore, the low-position supply module is connected to the wheel frame body by welding or bolting.

[0014] The first spiral guide section is detachably connected to the low-position supply module by bolts.

[0015] Furthermore, the first spiral guide portion includes a base, which is a flange structure, and four spiral blades are provided on the base, with the top ends of the spiral blades fixedly connected to a fixing ring;

[0016] The second spiral guide section is welded to the low-position supply module, and the second spiral guide section is formed by welding a number of spiral short pieces along the inner wall of the low-position supply module.

[0017] Furthermore, the bottom of the low-position supply module is provided with an oil inlet welded to a seamless steel pipe. The seamless steel pipe is connected to a fluororubber tube with a temperature resistance of 250°C. The fluororubber tube is connected to a conical lubricating nozzle, which is a conical brass nozzle.

[0018] Furthermore, it also includes a control module, which is electrically connected to the high-pressure quantitative pump, the flow sensor, and the main control system of the metallurgical crane. The control module includes a PLC controller and a communication unit, which communicates with the main control system of the metallurgical crane via Profinet or Modbus protocol.

[0019] Furthermore, the volume of the lubricating oil supply module is 100-200L, the high-pressure metering pump is a plunger-type high-pressure pump with a working pressure range of 10-30MPa and a flow rate range of 0.5-2L / min, and the pump body is equipped with a pressure safety valve.

[0020] A method for implementing a lubrication system for a metallurgical crane includes the following steps;

[0021] The first step is to place lubricating oil in the high-level supply module. Under the action of the high-pressure metering pump, the high-level supply module delivers the lubricating oil through the pipeline to the multi-channel distribution module. The multi-channel distribution module is connected to the outlet of the high-pressure metering pump and includes at least one progressive distributor and a corresponding number of flow sensors. The outlet of each progressive distributor is connected to a lubrication point of the metallurgical crane through a branch pipeline. The flow sensor is installed at the outlet of the progressive distributor.

[0022] The high-level supply module is an oil storage tank. The outlet of the high-level supply module is connected to the inlet of the high-pressure metering pump. The outlet of the high-pressure metering pump is connected to the multi-channel distribution module. At least two of the outlets of the multi-channel distribution module are connected to the low-level supply module through branch pipelines. The bottom of the low-level supply module is equipped with an oil inlet welded to a seamless steel pipe. The seamless steel pipe is connected to a fluororubber tube with a temperature resistance of 250℃. The fluororubber tube is connected to a conical lubricating nozzle. The conical lubricating nozzle is a conical brass nozzle. The lubricating oil in the low-level supply module flows out through the conical lubricating nozzle.

[0023] A buffer device is installed in the low-level supply module. The buffer device is a spiral guide plate, which includes a first spiral guide section and a second spiral guide section. The buffer device reduces the oscillation of oil in the low-level supply module.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] The outlet of the medium-high pressure quantitative pump of this utility model is connected to a multi-channel distribution module. At least two of the outlets of the multi-channel distribution module are connected to the low-level supply module through branch pipelines. The bottom of the low-level supply module is provided with an oil inlet welded to a seamless steel pipe. The seamless steel pipe is connected to a fluororubber tube with a temperature resistance of 250℃. The fluororubber tube is connected to a conical lubricating nozzle, which is a conical brass nozzle. The lubricating oil in the low-level supply module flows out through the conical lubricating nozzle.

[0026] To facilitate the buffering effect of the oil within the low-level supply module during use, this invention features a second spiral guide section welded to the low-level supply module. The second spiral guide section is formed by welding several short spiral blades along the inner wall of the low-level supply module. The first spiral guide section is located above the second spiral guide section, with a distance between them. Bolt holes are provided on the base at the bottom of the first spiral guide section, and these bolt holes are bolted to a fixed bracket evenly distributed around the circumference of the low-level supply module. A cross-shaped spiral blade (a steel plate structure) is welded to the hollow portion of the base, extending from the four vertices of the cross-shaped plate to the four quadrant points on the fixing ring. The fixing ring is positioned below the upper cover (a spiral cap structure that mates with the low-level supply module) of the low-level supply module and abuts against the upper cover.

[0027] This invention is applicable to the lubrication and protection of continuous crane wheels in steel plants under high temperature and high load conditions. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall connection of this utility model;

[0029] Figure 2 This is a schematic diagram of the installation of the low-level supply module of this utility model;

[0030] Figure 3 This is a schematic diagram of the low-position supply module of this utility model with a buffer device;

[0031] Figure 4 This is a schematic diagram of the first spiral guide section inside the low-position supply module of this utility model;

[0032] Figure 5 This is a schematic diagram of the second spiral guide section inside the low-position supply module of this utility model. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] like Figure 1-5As shown, a lubrication system for a metallurgical crane includes a lubricating oil supply module 1 and a multi-channel distribution module 2. The lubricating oil supply module 1 includes a high-level supply module 3 and a low-level supply module 4. The high-level supply module 3 is located in the partition space of the metallurgical crane's cab, and the low-level supply module 4 is located on the wheel frame body at a distance of 120±5mm from the wheel centerline.

[0037] The low-position supply module 4 is a hollow cylindrical structure. The bottom of the low-position supply module 4 is provided with an oil inlet, and a buffer device 5 is fixedly installed inside the low-position supply module 4.

[0038] The high-level supply module 3 is an oil storage tank. The connecting pipe of the high-level supply module 3 is fixed by a bracket. The outlet of the high-level supply module 3 is connected to the inlet of the high-pressure metering pump 6. The outlet of the high-pressure metering pump 6 is connected to the multi-channel distribution module 2. At least two of the outlets of the multi-channel distribution module 2 are connected to the low-level supply module 4 through branch pipes.

[0039] To facilitate monitoring of oil flow rate via flow sensors during operation, the multi-channel distribution module 2 includes at least one progressive distributor and a corresponding number of flow sensors 7. The outlet of each progressive distributor is connected to a lubrication point of the metallurgical crane via a branch pipeline (a low-level supply module is set at the corresponding position according to the actual working conditions, and the lubrication points include key lubrication points such as wheel bearings, drum bearings, and couplings of the metallurgical crane, which are provided with lubrication).

[0040] To reduce oil oscillation within the low-level supply module 4 during operation, the buffer device 5 is a spiral guide vane, comprising a first spiral guide portion 9 and a second spiral guide portion 10. The first spiral guide portion 9 is detachably connected to the low-level supply module 4, while the second spiral guide portion 10 is fixedly disposed at the bottom of the low-level supply module 4. The low-level supply module 4 is connected to the wheel frame via welding or bolts. The detachable connection between the first spiral guide portion 9 and the low-level supply module 4 is a bolt connection.

[0041] In order to facilitate the buffering effect of oil in the low-level supply module as much as possible during use, the first spiral guide part 9 includes a base 11, the base 11 is a flange structure, and four spiral blades 12 are provided on the base 11. The top end of the spiral blades 12 is fixedly connected to the fixing ring 13.

[0042] The second spiral guide section 10 is welded to the low-position supply module 4. The second spiral guide section 10 is formed by welding a number of spiral short pieces along the inner wall of the low-position supply module 4.

[0043] The first spiral guide section 9 is located above the second spiral guide section 10, and there is a distance between the first spiral guide section 9 and the second spiral guide section 10. A bolt hole is provided on the base at the bottom of the first spiral guide section 9, and the bolt hole is connected to the first spiral guide section 9 by bolts to the fixed brackets that are evenly distributed around the circumference of the low-position supply module 4.

[0044] The hollow position of the base 11 is welded and fixed with one end of the cross-shaped spiral plate 12 (which is a steel plate structure). The spiral plate extends from the four vertices of the cross-shaped plate to the four quadrant points on the fixing ring 13 and is welded and fixed. The fixing ring is located below the upper cover of the low-position supply module 4 (the spiral cover structure cooperates with the low-position supply module 4) and abuts against the upper cover.

[0045] The second spiral guide section 10 is formed by welding a number of spiral short pieces along the inner wall of the low-position supply module 4. The spiral short pieces are located below the fixed brackets evenly distributed around the circumference of the low-position supply module 4.

[0046] Among them, at least two of the outlets of the multi-path distribution module 2 are connected to the connection port on the upper cover of the low-position supply module 4 through branch pipelines.

[0047] To facilitate oil spraying to a designated location via a conical lubricating nozzle during use, the bottom of the low-position supply module 4 is provided with an oil inlet welded to a seamless steel pipe 15. The seamless steel pipe 15 is connected to a fluororubber tube with a temperature resistance of 250°C. The fluororubber tube is connected to a conical lubricating nozzle 16, which is a conical brass nozzle.

[0048] To facilitate automatic control during operation, a control module 14 is also included. The control module 14 is electrically connected to the high-pressure quantitative pump 6, the flow sensor 7, and the main control system of the metallurgical crane. The control module 14 includes a PLC controller and a communication unit. The communication unit communicates with the main control system of the metallurgical crane (which is prior art and not shown in the figure) via Profinet or Modbus protocol. The PLC controller has built-in analog input / output modules and digital input / output modules, which can dynamically adjust the lubrication cycle according to the lifting capacity, running time, and working level of the metallurgical crane.

[0049] The PLC controller uses a Siemens S7-1200 or equivalent PLC. The PLC acquires real-time parameters of the lifting capacity, running time, and operating level of the metallurgical crane's main control system via a communication unit. The PLC controls the high-pressure quantitative pump's operating time to achieve quantitative oil supply. The PLC controls the high-pressure quantitative pump to start, and lubricating oil is distributed to the low-level supply module and various lubrication points via a multi-channel distribution module. Flow sensors provide real-time feedback of flow data.

[0050] To facilitate continuous oil supply from the lubricating oil supply module 1 to the low-level supply module 4 during use, the bottom of the lubricating oil supply module 1 is designed with a conical or arc-shaped structure, and the second spiral guide part 10 is located above the conical or arc-shaped structure at the bottom of the lubricating oil supply module 1.

[0051] The volume of the lubricating oil supply module 1 is 100-200L, and the high-pressure metering pump 6 is a plunger-type high-pressure pump with a working pressure range of 10-30MPa and a flow rate range of 0.5-2L / min. The pump body is equipped with a pressure safety valve.

[0052] A method for implementing a lubrication system for a metallurgical crane includes the following steps;

[0053] The first step is to place lubricating oil in the high-level supply module. Under the action of the high-pressure metering pump, the high-level supply module delivers the lubricating oil through the pipeline to the multi-channel distribution module. The multi-channel distribution module is connected to the outlet of the high-pressure metering pump and includes at least one progressive distributor and a corresponding number of flow sensors. The outlet of each progressive distributor is connected to a lubrication point of the metallurgical crane through a branch pipeline. The flow sensor is installed at the outlet of the progressive distributor.

[0054] The high-level supply module is an oil storage tank. The outlet of the high-level supply module is connected to the inlet of the high-pressure metering pump. The outlet of the high-pressure metering pump is connected to the multi-channel distribution module. At least two of the outlets of the multi-channel distribution module are connected to the low-level supply module through branch pipelines. The bottom of the low-level supply module has an oil inlet welded to a seamless steel pipe. The seamless steel pipe is connected to a fluororubber tube with a temperature resistance of 250℃. The fluororubber tube is connected to a conical lubricating nozzle, which is a conical brass nozzle. The lubricating oil in the low-level supply module flows out through the conical lubricating nozzle.

[0055] A buffer device is installed in the low-level supply module. The buffer device is a spiral guide plate, which includes a first spiral guide section and a second spiral guide section. The buffer device reduces the oscillation of oil in the low-level supply module.

[0056] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0057] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lubrication system for a metallurgical crane, characterized in that: It includes a lubricating oil supply module (1) and a multi-channel distribution module (2). The lubricating oil supply module (1) includes a high-level supply module (3) and a low-level supply module (4). The high-level supply module (3) is set in the partition space of the metallurgical crane cab, and the low-level supply module (4) is set on the wheel frame body 120±5mm away from the wheel centerline. The low-position supply module (4) is a hollow cylindrical structure. The bottom of the low-position supply module (4) is provided with an oil inlet, and a buffer device (5) is fixedly installed inside the low-position supply module (4). The high-level supply module (3) is an oil storage tank. The outlet of the high-level supply module (3) is connected to the inlet of the high-pressure metering pump (6). The outlet of the high-pressure metering pump (6) is connected to the multi-channel distribution module (2). At least two of the outlets of the multi-channel distribution module (2) are connected to the low-level supply module (4) through branch pipelines.

2. The lubrication system for metallurgical cranes according to claim 1, characterized in that: The multi-path distribution module (2) includes at least one progressive distributor and a corresponding number of flow sensors (7), and the outlet of each progressive distributor is connected to a lubrication point of a metallurgical crane through a branch pipeline.

3. The lubrication system for metallurgical cranes according to claim 2, characterized in that: The buffer device (5) is a spiral guide plate, which includes a first spiral guide section (9) and a second spiral guide section (10).

4. The lubrication system for metallurgical cranes according to claim 3, characterized in that: The first spiral guide part (9) is detachably connected to the low-position supply module (4), and the second spiral guide part (10) is fixedly disposed at the bottom of the low-position supply module (4).

5. The lubrication system for metallurgical cranes according to claim 4, characterized in that: The low-position supply module (4) is connected to the wheel frame body by welding or bolting; The first spiral guide section (9) and the low-position supply module (4) are detachably connected by bolts; 6. The lubrication system for a metallurgical crane according to claim 5, characterized in that: The first spiral guide part (9) includes a base (11), the base (11) is a flange structure, and four spiral blades (12) are provided on the base (11). The top end of the spiral blades (12) is fixedly connected to the fixing ring (13). The second spiral guide section (10) is welded to the low-position supply module (4), and the second spiral guide section (10) is formed by welding a number of spiral short pieces along the inner wall of the low-position supply module (4).

7. The lubrication system for metallurgical cranes according to claim 6, characterized in that: The bottom of the low-position supply module (4) is provided with an oil inlet that is welded to a seamless steel pipe (15). The seamless steel pipe (15) is connected to a fluororubber tube with a temperature resistance of 250°C. The fluororubber tube is connected to a conical lubricating nozzle (16), which is a conical brass nozzle.

8. The lubrication system for a metallurgical crane according to claim 7, characterized in that: It also includes a control module (14), which is electrically connected to the high-pressure quantitative pump (6), the flow sensor (7) and the main control system of the metallurgical crane. The control module (14) includes a PLC controller and a communication unit, which communicates with the main control system of the metallurgical crane through the Profinet or Modbus protocol.

9. The lubrication system for a metallurgical crane according to claim 8, characterized in that: The volume of the lubricating oil supply module (1) is 100-200L. The high-pressure metering pump (6) is a plunger-type high-pressure pump with a working pressure range of 10-30MPa and a flow range of 0.5-2L / min. The pump body is equipped with a pressure safety valve.

Images