Special automatic lubricating device for flow machinery

Abstract

The utility model belongs to container stacking machine equipment maintenance technical field, specifically disclose a kind of automatic lubricating device special for mobile machinery, including lubricating pump group, the outlet end of lubricating pump group is connected with filter and progressive multistage distribution assembly in proper order, progressive multistage distribution assembly includes one level main distributor and at least one two-level sub-distributor, one level main distributor is connected with filter outlet by main pipeline, two-level sub-distributor is connected to the multiple lubrication points of mobile machinery by branch pipeline, by lubricating pump and progressive multistage distribution assembly combination, realize centralized, automatic, full system lubrication, each two-level sub-distributor is connected with the lubrication point position on one level main distributor by oil circuit respectively, two-level sub-distributor has fourteen lubrication point positions, each lubrication point position is connected to the specific part needing lubrication on container stacking machine by pipeline, realizes the centralized lubrication of the multiple lubrication points of container stacking machine.

Description

Technical Field

[0001] This utility model belongs to the field of lubrication device technology, and specifically relates to an automatic lubrication device for mobile machinery. Background Technology

[0002] As a core loading and unloading equipment in logistics warehousing, port terminals, railway freight yards and other places, container stackers are widely used in container stacking, transfer and loading and unloading operations. Their working environment is harsh and the work intensity is high. The equipment is under heavy load, frequent start and stop, vibration and impact and other complex working conditions for a long time. During operation, there is continuous friction between a large number of moving parts such as gantry slide rails, rollers, shaft hinges, lifting chains, slewing bearings and so on. If the lubrication is not good, it is easy to cause abnormal wear, jamming or even failure of parts, which seriously affects the reliability and service life of the equipment.

[0003] Currently, most forklifts still use traditional manual lubrication methods, where maintenance personnel periodically stop the machine and use a manual grease gun to apply grease to each lubrication point. However, manual operation relies on experience and judgment, making it difficult to uniformly control the lubrication cycle and dosage. On the one hand, insufficient lubrication is prone to occur, leading to the rupture of the oil film on the friction pair, direct metal-to-metal contact, accelerated wear, and premature fatigue spalling or seizing failures. On the other hand, excessive lubrication is also common, not only wasting grease and increasing operating costs, but also allowing excess grease to attract dust, sand, and other impurities from the air, forming sludge or hard deposits in high-temperature environments, affecting the precision of the mechanism's movement, and even blocking lubrication channels. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic lubrication device specifically for mobile machinery.

[0005] To achieve the above objectives, this utility model provides an automatic lubrication device for mobile machinery, including a lubrication pump set. The outlet end of the lubrication pump set is sequentially connected to a filter and a progressive multi-stage distribution assembly. The progressive multi-stage distribution assembly includes a primary main distributor and at least one secondary sub-distributor. The primary main distributor is connected to the filter outlet through a main pipeline, and the secondary sub-distributor is connected to multiple lubrication points of the mobile machinery through branch pipelines.

[0006] In the above technical solution, the secondary sub-distributor adopts a quantitative piston structure, and each oil outlet is equipped with an independent metering unit.

[0007] In the above technical solution, the lubrication pump group is further described as a high-pressure plunger pump and is equipped with a variable frequency drive motor.

[0008] In the above technical solution, the filter further includes a housing, an end cap, and a filter cartridge. The housing is threadedly connected to the oil circuit interface at the outlet end of the lubrication pump group. The end cap is installed at the end of the housing by a screw connection and is simultaneously threadedly connected to the downstream oil circuit interface. The filter cartridge is detachably snapped into the housing.

[0009] Furthermore, in the above technical solution, a differential pressure alarm device is installed inside the housing.

[0010] Furthermore, the above technical solution also includes an intelligent control unit, which is electrically connected to the lubrication pump group and is used to control the start and stop of the lubrication pump and the lubrication cycle.

[0011] Furthermore, the above technical solution also includes a sensor installed at the lubrication point, which is communicatively connected to the intelligent control unit.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. By combining a lubrication pump with a progressive multi-stage distribution assembly, centralized, automatic, and full-system lubrication is achieved. Each secondary sub-distributor is connected to a lubrication point on the primary main distributor via an oil circuit. The secondary sub-distributor has fourteen lubrication points, and each lubrication point is connected to a specific part of the container stacker that needs lubrication via a pipeline, thereby achieving centralized lubrication of multiple lubrication points on the container stacker.

[0013] 2. The piping system provides full coverage for lubrication of all parts of the container stacker, especially for internal and narrow areas that are difficult for maintenance workers to access, thus improving lubrication efficiency and reducing lubrication difficulty.

[0014] 3. By combining distributors, progressive lubrication is achieved. This system enables high-pressure, quantitative, intermittent operation, allowing it to maintain stable operation even under large temperature differences. The system boasts extremely high lubrication accuracy, with the lubrication volume determined by the diameter of the plunger inside the distributor and the working process. Installation, commissioning, and maintenance are all convenient.

[0015] 4. Through intelligent control and precise grease supply technology, the lubrication time and lubrication dosage can be automatically adjusted according to the operating conditions of the forklift, realizing centralized lubrication of multiple lubrication points, effectively reducing manual intervention, improving the intelligence and automation level of equipment maintenance, and ensuring the stable and efficient operation of the forklift. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a schematic diagram of the filter structure proposed in this utility model; Figure 3 This is a schematic diagram of the internal structure of the filter proposed in this utility model; Figure 4 This is a schematic diagram of the progressive multi-level allocation component structure proposed in this utility model; In the diagram: 10. Lubrication pump set; 20. Filter; 21. Housing; 22. End cap; 23. Filter cartridge; 24. Differential pressure alarm device 30. Progressive multi-level allocation component; 31. Primary master allocator; 32. Secondary sub-allocator; 40. Intelligent control unit. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Example: like Figure 1 - Figure 4 The automatic lubrication device for mobile machinery shown includes a lubrication pump group 10, which is a high-pressure plunger pump equipped with a variable frequency drive motor. The motor speed can be dynamically adjusted according to control commands, thereby achieving stepless adjustment of the grease output flow rate. For example, during low-temperature start-up or short-cycle high-frequency lubrication, the discharge rate is reduced to reduce system impact; after long-term heavy-load operation, the grease supply is increased to ensure sufficient lubrication. The outlet end of the lubrication pump group 10 is sequentially connected to a filter 20 and a progressive multi-stage distribution component 30, which can effectively remove impurities in the grease and prevent the progressive multi-stage distribution component 30 from clogging. The progressive multi-stage distribution component 30 includes a primary main distributor 31 and at least one secondary sub-distributor 32, forming a two-stage distribution network. Specifically, there are fourteen secondary sub-distributors 32. The primary main distributor 31 is connected to the outlet of the filter 20 through a main pipeline, and the secondary sub-distributors 32 are connected to multiple lubrication points of the mobile machinery through branch pipelines. It is suitable for complex mobile machinery with multiple lubrication areas such as gantry slide rails, shaft hinge points, lifting chains, and slewing bearings.

[0019] The primary distributor 31 adopts a standard progressive plunger structure, containing four output channels. Each channel sequentially drives the subsequent piston to ensure sequential oil supply and has a self-checking function. When a channel is blocked and cannot complete its stroke, the entire progressive cycle is interrupted, and the system can determine the location of the faulty branch based on this.

[0020] Each secondary sub-distributor 32 obtains grease from the primary main distributor 31 and further distributes the grease to downstream lubrication points. The secondary sub-distributor 32 adopts a quantitative piston structure, with each oil outlet equipped with an independent metering unit. Specifically, each metering unit includes a precision piston cylinder and an adjustable limit mechanism, and the volume of grease output per cycle is set by adjusting the piston stroke length.

[0021] When the mobile machinery reaches the set operating conditions, the lubrication pump unit 10 is started. The variable frequency motor slowly accelerates, and the high-pressure lubricating grease, after being pumped and filtered, enters the primary main distributor 31, which drives each plunger to distribute the grease to each secondary sub-distributor 32. In each lubrication cycle, the independent metering unit of the secondary sub-distributor 32 dispenses a fixed amount of lubricating grease according to a preset stroke, which is then delivered to each lubrication point through branch pipelines. Due to the piston sealing structure, the oil delivery accuracy can be guaranteed even in vertical installation or under vibration conditions.

[0022] Reference Figure 2-3 The filter 20 is a detachable precision filter device used to remove impurities that may be carried by the grease during transportation, preventing them from entering the progressive multi-stage distribution assembly 30 and causing distributor plunger jamming or nozzle blockage, thus ensuring system reliability. It includes a housing 21, an end cap 22, and a filter cartridge 23. The housing 21 is threaded to the oil circuit interface at the outlet of the lubrication pump assembly 10 for quick installation and sealing. An O-ring seal is provided at the connection to ensure no leakage under high pressure. The end cap 22 is screwed to the end of the housing 21 and simultaneously threaded to the downstream oil circuit interface, thereby delivering the filtered grease to the primary main distributor 31. The end cap 22 has a central through hole and a sealing gasket to ensure a tight seal between the inlet and outlet oil chambers. The filter cartridge 23 is detachably snapped into the housing 21 using a snap-fit ​​structure, allowing for tool-free removal and replacement for easy daily maintenance.

[0023] Furthermore, a differential pressure alarm device 24 is installed inside the housing 21. The differential pressure alarm device 24 is integrated on the end cover 22 and is used to monitor the pressure difference between the inlet and outlet of the filter 20 in real time. The device includes a pressure sensing element and a signal output module. When the filter cartridge 23 gradually becomes clogged, causing the differential pressure to exceed the preset threshold, the differential pressure alarm device 24 is automatically triggered to remind on-site maintenance personnel.

[0024] It also includes an intelligent control unit 40, which serves as the core control module of the entire automatic lubrication system. It is integrated into the electrical control box of the mobile machinery. The intelligent control unit 40 is electrically connected to the lubrication pump group 10 and can accurately control the start, stop, running time and output flow of the lubrication pump according to preset logic or real-time operating condition signals. It is used to control the start and stop of the lubrication pump and the lubrication cycle.

[0025] To further enhance the intelligence and reliability of the system, this device also includes sensors installed at the lubrication points, specifically including pressure sensors, temperature sensors, and dual-parameter integrated sensors. The sensors are communicatively connected to the intelligent control unit 40.

[0026] Working Principle: When the mobile machinery reaches the preset operating conditions, the intelligent control unit 40 sends a start command to the lubrication pump group 10. The variable frequency drive motor dynamically adjusts its speed according to the current operating conditions, thereby achieving stepless adjustment of the grease output flow rate. High-pressure grease enters the filter 20 sequentially from the outlet of the lubrication pump group 10. The filter 20 adopts a detachable precision filter device with a filter cartridge 23 inside, which can effectively remove impurities in the grease and prevent them from entering the progressive multi-stage distribution assembly 30, causing distributor plunger jamming or nozzle blockage. The filter 20 has a built-in differential pressure alarm device 24, which monitors the pressure difference between the inlet and outlet of the filter 20 in real time. The filtered clean grease enters the primary main distributor 31 through the main pipeline. This distributor adopts a standard progressive plunger structure with 4 output channels. Each channel sequentially pushes the subsequent piston to ensure sequential oil supply and has a self-checking function. If a channel cannot complete its stroke due to blockage, the entire progressive cycle is interrupted. The system determines the location of the faulty branch based on this, and the primary main distributor 31 distributes the grease to each secondary sub-distributor 32. Each secondary sub-distributor 32 employs a metering piston structure, with each outlet equipped with an independent metering unit. Specifically, each metering unit includes a precision piston cylinder and an adjustable limit mechanism. The volume of grease output per cycle is set by adjusting the piston stroke length. In each lubrication cycle, the independent metering unit of the secondary sub-distributor 32 dispenses a metered amount of grease according to a preset stroke, which is then delivered to each lubrication point via branch lines. Due to the piston sealing structure, oil delivery accuracy is guaranteed even under vertical installation or vibration environments.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An automatic lubrication device for mobile machinery, comprising a lubrication pump unit (10), characterized in that, The outlet end of the lubrication pump assembly (10) is connected in sequence to a filter (20) and a progressive multi-stage distribution assembly (30). The progressive multi-stage distribution assembly (30) includes a primary main distributor (31) and at least one secondary sub-distributor (32). The primary main distributor (31) is connected to the outlet of the filter (20) through a main pipeline, and the secondary sub-distributor (32) is connected to multiple lubrication points of the flowing machinery through branch pipelines. The secondary sub-distributor (32) adopts a quantitative piston structure, and each oil outlet is equipped with an independent metering unit; the lubrication pump group (10) is a high-pressure plunger pump and is equipped with a variable frequency drive motor; the filter (20) includes a housing (21), an end cap (22) and a filter cartridge (23); a differential pressure alarm device (24) is installed inside the housing (21). It also includes an intelligent control unit (40), which is electrically connected to the lubrication pump group (10) and is used to control the start and stop of the lubrication pump and the lubrication cycle; it also includes a sensor installed at the lubrication point, which is communicatively connected to the intelligent control unit (40).

2. The automatic lubrication device for mobile machinery according to claim 1, characterized in that, The housing (21) is threaded to the oil circuit interface at the outlet end of the lubrication pump group (10). The end cap (22) is installed at the end of the housing (21) by a spiral connection and is simultaneously threaded to the downstream oil circuit interface. The filter cartridge (23) is detachably snapped into the housing (21).

Images