A hand-automatic lubricant filling system and filling device

Abstract

The present application relates to a kind of hand self lubricant filling system and filling device.It includes lubricating pump module and oiler pump module, two modules are including corresponding driving mechanism and plunger pair, two modules share oil tank, it further includes switch valve, realize only lubricating pump module work and only oiler module work or two modules work simultaneously to switch as the switching of centralized mode of oiler, wherein, the work of lubricating pump module is according to the program of set rule Automatic work and rest switch, the work of oiler pump module is by manual control control module, then by control module control oiler pump module or simultaneously control the start-stop of oiler pump module and lubricating pump module;System further includes main oil circuit, main distributor and oil gun head, oil gun head oil pipe is communicated with the internal oil port of main oil circuit or switch valve.It has the advantages of dual-purpose, small volume, low cost, power reduction and reduce failure rate of oiler pump module under the condition of unchanged displacement.

Description

Technical Field

[0001] This invention relates to a manual / automatic lubricant dispensing system and dispensing device. Background Technology

[0002] Mechanical equipment generally has moving parts, which form friction pairs. Take construction machinery as an example. Construction machinery is an important part of the equipment manufacturing industry, mainly used in national defense construction, transportation construction, energy industry construction and production, raw material industry construction and production such as mining, agriculture, forestry and water conservancy construction, industrial and civil construction, urban construction, environmental protection, and other fields. Its operating conditions are complex, the objects it works on are varied, and it often operates under variable loads, placing high demands on the reliability and adaptability of the machines. To ensure the proper functioning of friction pairs such as bearings and hinged shafts under long-term, high-intensity construction operations, effective lubrication of the pins and bushings is essential.

[0003] Traditional methods generally include two approaches. One approach is to manually apply grease using a grease gun through the grease nozzle on the friction pair to the grease application points. However, this method requires stopping the machine, and because there are many grease application points, one grease gun cannot meet the needs of all application points. It also requires repeatedly refilling the grease gun, which is cumbersome, prone to contamination, delays the construction process, and is labor-intensive. Furthermore, due to varying personnel skills, wear of the shaft pins or bushings often occurs due to untimely lubrication.

[0004] Another approach is to install a centralized lubrication system on the construction machinery. A centralized lubrication system refers to a system that accurately supplies grease to multiple grease filling points according to a certain rule (cycle, quantity) from a lubrication pump through pipelines connected to a distributor. A centralized lubrication system generally includes a lubrication pump, distributor, and lubrication pipelines. The lubrication pump integrates a motor, plunger pairs, oil tank, and monitor. The monitor can control the grease filling at each filling point according to a set time. The distributor is a distribution valve with 1-2 inlets and multiple outlets. Internally, it has multiple plunger pairs. The grease entering through the inlets is distributed by the movement of the plungers and discharged from the various outlets, then transported through pipelines to the grease filling points of each friction pair of the mechanical equipment. The entire process is automatic and requires no manual operation, which is a significant advantage of centralized lubrication systems over traditional lubrication methods. However, centralized lubrication systems also have drawbacks. The main drawback is that the system is relatively fragile and has a higher probability of failure. The main causes of failure include the following: 1. Because the space for grease to pass through the friction pair (pin and bushing) is small, metal shavings, dust, and dried grease accumulated over a long period of operation form sludge. The sludge blocks the lubrication gap, making it difficult for fresh grease to enter the lubrication gap. This is reflected in the corresponding lubrication pipeline as pipeline pressure, which ultimately leads to the inability of the centralized lubrication system to operate normally. 2. Some mechanical equipment, such as construction machinery, operates in very harsh environments. The lubrication lines installed on the equipment are damaged by sand, gravel, stones and other objects on site due to inadequate protection, which prevents the centralized lubrication system from properly lubricating the points where grease is added. 3. Factors such as viscous pumped grease, low temperature, impurities and air bubbles in the grease, and poor grease quality can easily cause the plunger of the distributor to stick or even become blocked. In addition, when mechanical equipment is not used for a long time for various reasons, the grease in the distributor may dry out and become blocked, which will also cause the distributor to become blocked. This will prevent the centralized lubrication system from working properly. For the reasons mentioned above, centralized lubrication systems have low acceptance among customers. Whenever a malfunction occurs, customers have to stop using the machinery and then use a grease gun or purchase other mobile lubrication equipment for emergency lubrication. Using a grease gun involves numerous lubrication points, and one application cannot meet all needs, requiring repeated refilling. This is cumbersome, prone to contamination, delays construction, and is labor-intensive. Furthermore, due to varying personnel skills, untimely lubrication often leads to wear on shafts or bushings. Purchasing mobile lubrication equipment is also inconvenient, as construction machinery typically operates in remote locations such as mines and fields, significantly hindering construction progress. Summary of the Invention

[0005] The purpose of this invention is to provide a manual / automatic lubricant dispensing system and device that can not only provide normal lubrication but also conveniently perform emergency lubrication when the centralized lubrication system fails.

[0006] The technical solution of the manual / automatic lubricant dispensing system of the present invention is as follows: The manual / automatic lubricant dispensing system includes: A refueling pump includes an interconnected oil tank and a pump head assembly. The pump head assembly includes a lubrication pump module and a fuel dispenser pump module, both of which can draw lubricant from the oil tank and pump it out. The lubrication pump module includes a lubrication pump drive mechanism and a lubrication pump plunger assembly driven therefrom. The fuel dispenser pump module includes a fuel dispenser drive mechanism and a fuel dispenser pump plunger assembly driven therefrom. The pump head assembly also includes a switching valve. The lubrication pump plunger assembly, or both the lubrication pump plunger assembly and the fuel dispenser pump plunger assembly, are connected to the internal oil port of the switching valve. The switching valve has one or two external oil ports connected to external oil pipes. The switching valve has a first state in which the lubrication pump plunger assembly pumps lubricant outward through the external oil ports, and a second state in which the fuel dispenser pump plunger assembly, or both the fuel dispenser pump plunger assembly and the lubrication pump plunger assembly, pumps lubricant outward through one external oil port. The control module is used to control the start and stop of the lubrication pump module and the fuel dispenser pump module, and can also control the switching valve to switch between the first and second states. The lubrication pump module works automatically according to a set program, switching between working and resting. The fuel dispenser pump module works by manually operating the control module, which then controls the fuel dispenser pump module or simultaneously controls the start and stop of both the fuel dispenser pump module and the lubrication pump module. The main oil circuit is connected to the external oil ports one by one; The main distributor is connected to the main oil line through its inlet, and its outlet is connected to the lubrication point to be lubricated through branch lines or sub-distributors and their lines. The nozzle of the refueling gun is connected to the internal oil port of the main oil circuit or the switching valve through the refueling pipe.

[0007] The beneficial effects of this plan are as follows: 1) This machine serves two purposes: it not only has the functions of a traditional centralized lubrication system but also that of a traditional fuel dispenser. During most of the normal operation, the lubrication pump module is used for centralized lubrication, adding the required lubricant to each friction pair of the equipment at fixed times, locations, and quantities. When the distributor or lubrication pipeline is damaged or malfunctions, or when an additional lubrication point, such as the breaker hammer, needs temporary lubrication, the machine can switch to the fuel dispenser pump module. This allows for more flexible and convenient semi-manual lubrication, meaning that the location and amount of lubrication are completely controlled by hand, and can be stopped at any time. 2) Small size and low cost. Compared with traditional systems, the two sets of devices share the oil tank, oil pipes and control parts, which takes up less space and is easier to arrange. This saves parts and reduces costs, and has a higher degree of integration. 3) The power of the fuel dispenser pump module is reduced while the displacement remains unchanged. Since the fuel dispenser pump module and the lubrication pump module can be combined to dispense oil, the adaptability to the rated displacement requirement of the fuel dispenser is reduced. A cheaper and smaller fuel dispenser drive mechanism can be selected. 4) Reduced failure rate: Since the filling pump has both automatic and manual lubrication functions, lubrication of parts that are easily damaged by traditional automatic lubrication methods is no longer necessary. For example, when the equipment to be lubricated is an excavator, its connecting rod part is in frequent contact with ore, etc. If the distributor, pipeline and other accessories are installed in the traditional way, it is easy to be damaged, causing the entire centralized lubrication system to shut down. With the filling pump, there is no need to install the distributor and pipeline, and the filling pump module can be used directly for lubrication.

[0008] Furthermore, the pump head assembly also includes a rotary pressure plate, which, when rotated, drives lubricant to flow towards the plunger assembly of the fuel dispenser pump and the plunger assembly of the lubrication pump. When either the lubrication pump module or the fuel dispenser pump module is operating, the rotary pressure plate rotates accordingly. This design allows the fuel dispenser pump module and the lubrication pump module to share a single rotary pressure plate, further reducing system components, saving costs, and minimizing equipment size.

[0009] Furthermore, the switching valve is a two-position four-way valve. One of the two internal ports of the two-position four-way valve is connected to the oil tank or blocked by a plug, and the other is connected to the lubrication pump plunger assembly or simultaneously to both the lubrication pump plunger assembly and the fuel dispenser pump plunger assembly. The two external ports of the two-position four-way valve constitute the two external ports. This design further limits the use of a two-position four-way valve, which can be used in both dual-line and progressive systems. When used in a progressive system, since the progressive distributor does not need to be unloaded, one internal port can be blocked.

[0010] Furthermore, the switching between the first and second states of the two-position four-way valve is executed by a mechanical reversing mechanism. The control module controls the mechanical reversing mechanism by controlling the forward and reverse rotation of the lubrication pump drive mechanism; the mechanical reversing mechanism includes a lever mechanism. This solution further limits the use of a mechanical reversing mechanism to achieve the switching of the valve state, which has higher stability and lower failure rate compared to electromagnetic and hydraulic methods.

[0011] Furthermore, the switching valve is a two-position three-way valve. One of its two internal ports is connected to the oil tank, and the other is connected to the lubrication pump plunger assembly, or simultaneously to both the lubrication pump plunger assembly and the fuel dispenser pump plunger assembly. One external port of the two-position three-way valve constitutes the external oil port. This design further limits the switching valve to a two-position three-way valve, thus making it suitable for single-line systems.

[0012] Furthermore, the switching valve is a two-position three-way valve. One internal port of the two-position three-way valve is connected to the lubrication pump plunger assembly, or simultaneously to both the lubrication pump plunger assembly and the fuel dispenser pump plunger assembly. The two external ports of the two-position three-way valve constitute the two external ports. This solution is further limited to a two-position three-way valve with two external ports and one internal port. This valve is suitable for the characteristics of a progressive system that does not require unloading and has a simpler structure compared to a four-way valve.

[0013] Furthermore, the main oil circuit has two lines and two external oil ports. The main distributor is a dual-line distributor, with at least one dual-line distributor connected to both main oil circuits simultaneously. This design is limited to dual-line systems and possesses the advantages of dual-line systems.

[0014] Furthermore, a progressive distributor and / or the fuel nozzle is connected to one of the two main oil circuits. The fuel nozzle has a manual on / off valve. A progressive distributor and / or a single-line distributor are connected to the other main oil circuit. This solution corresponds to multiple configurations. When the fuel nozzle and the progressive distributor are on the same main oil circuit, they can only work independently, or they can be detachably connected via a connector, allowing each to be connected individually; or either can be connected via a switching ball valve, etc. Connecting the progressive distributor or single-line distributor to the other main oil circuit allows for direct lubrication distribution to different lubrication points.

[0015] Furthermore, a sensor for detecting pipeline pressure or flow is installed upstream of the inlet of the progressive distributor, or a sensor for detecting the action of its plunger is installed on the progressive distributor itself, to determine whether the progressive distributor and its associated pipeline are blocked. The installation of this sensor can directly determine whether the oil circuit is blocked and the extent of the blockage. Combined with the sensor on the filling pump, it can accurately pinpoint the location of the fault in the entire system, facilitating rapid troubleshooting.

[0016] Furthermore, there is one main oil circuit and one external oil port. The main distributor is a single-line distributor, and there is at least one single-line distributor. This solution corresponds to a single-line system, which can achieve both lubrication and manual refueling functions with only one oil circuit. The system has a very simple structure and the lowest cost.

[0017] Furthermore, the main oil circuit has two lines and two external oil inlets. The main distributor is a progressive distributor, connected to one main oil circuit for centralized lubrication. The oil nozzle is connected to the other main oil circuit via an oil filling pipe for manual lubrication. In this scheme, the two oil circuits of the progressive system function independently: one for automatic centralized lubrication and the other for emergency manual lubrication.

[0018] Furthermore, a directional valve is installed at the connection between the refueling pipe and the internal oil port of the main oil circuit or switching valve. This directional valve controls the flow of grease towards either the downstream end of the refueling pipe or the main oil circuit. Alternatively, a switching valve is installed on both the refueling pipe and the main oil circuit, allowing control of the grease flow towards either the downstream end of the refueling pipe or the main oil circuit. The directional valve or the two switching valves ensure that when grease flows to the refueling pipe, the main oil circuit of the lubrication system is closed, preventing leaks in the main oil circuit from preventing insufficient pressure build-up in the refueling pipe and thus affecting the normal operation of the refueling nozzle. Similarly, when grease flows to the main oil circuit of the lubrication system, the refueling pipe can also be closed, preventing leaks in the refueling pipe from preventing insufficient pressure build-up downstream of the main oil circuit and thus affecting the normal operation of the centralized lubrication system.

[0019] Furthermore, the outlets of both the fuel dispenser pump plunger assembly and the lubrication pump plunger assembly are connected to the internal inlet of the switching valve, or the outlet of the lubrication pump plunger assembly is connected to the internal inlet of the switching valve. The outlets of the fuel nozzle and the fuel dispenser pump plunger assembly are connected to the same main oil circuit. This design establishes a one-to-one correspondence between the fuel nozzle and the fuel dispenser pump plunger assembly, ensuring that grease is always dispensed from the fuel nozzle during fuel dispenser pump module operation.

[0020] Furthermore, the refueling hose connected to the nozzle can be coiled retractably around the equipment to be lubricated or coiled around an automatic rewinding mechanism. This solution corresponds to two options: one is that the refueling hose is directly coiled around the equipment to be lubricated through some limiting structures, unfolded when needed and coiled up when not in use; the other is to use an existing automatic rewinding reel, which is located near the pump head assembly, has a longer refueling hose that can cover a wider area, and automatically retracts when not in use, making operation simpler and more convenient.

[0021] Furthermore, the refueling hose is detachably connected to the main fuel line via a quick-connect coupling. This design ensures that the refueling hose is detachably connected to the main fuel line, allowing the fuel nozzle to be used as a spare. It can be stored in a toolbox when not in use and can be connected for immediate use when needed, which is very convenient and also protects the refueling hose and nozzle.

[0022] Furthermore, an oil pressure switch, pressure sensor, safety valve, or relief valve is installed before the internal oil port of the switching valve or on the main oil line. These pressure detection and unloading components are primarily designed to ensure stable and safe system pressure, and can also provide feedback signals to help determine the system's status.

[0023] Furthermore, the rotating oil pressure plate is also provided with a stirring rod extending along its axial direction. The stirring rod can contact the inner wall of the oil tank to scrape off the lubricant adhering to the inner wall of the oil tank. This solution defines a shared stirring rod based on a shared rotating oil pressure plate, realizing the functions of stirring the lubricant, scraping off the lubricant adhering to the inner wall of the oil tank, and facilitating the falling of viscous lubricant.

[0024] Furthermore, the rotating oil pressure plate is symmetrically provided with raised oil pressure plates on both sides, and the rotating oil pressure plate can squeeze the lubricant by relying on the raised oil pressure plates on the corresponding sides when rotating forward and backward.

[0025] The technical solution of the manual / automatic lubricant dispensing device of the present invention is as follows: The manual / automatic lubricant dispensing device includes: Pump casing; The oil tank is mounted on the pump casing; A pump head assembly, mounted on a pump housing, includes a lubrication pump module and a fuel dispenser pump module. Both the lubrication pump module and the fuel dispenser pump module can draw lubricant from the fuel tank and pump it out. The lubrication pump module includes a lubrication pump drive mechanism and a lubrication pump plunger assembly driven by it. The fuel dispenser pump module includes a fuel dispenser drive mechanism and a fuel dispenser pump plunger assembly driven by it. The pump head assembly also includes a switching valve. The lubrication pump plunger assembly or both the lubrication pump plunger assembly and the fuel dispenser pump plunger assembly are simultaneously connected to the internal oil port of the switching valve. The switching valve has one or two external oil ports connected to external oil pipes. The switching valve has a first state in which the lubrication pump plunger assembly pumps lubricant out through the external oil port, and a second state in which the fuel dispenser pump plunger assembly or both the fuel dispenser pump plunger assembly and the lubrication pump plunger assembly pump lubricant out through one external oil port. The control module is used to control the start and stop of the lubrication pump module and the fuel dispenser pump module, and can also control the switching valve to switch between the first and second states. The lubrication pump module works automatically according to a set program, switching between working and resting. The fuel dispenser pump module works by manually operating the control module, which then controls the fuel dispenser pump module or simultaneously controls the start and stop of both the fuel dispenser pump module and the lubrication pump module.

[0026] The beneficial effects of this plan are as follows: 5) This machine serves two purposes: it functions as both a traditional centralized lubrication pump and a traditional fuel dispenser. During most normal operation, the lubrication pump module provides centralized lubrication, delivering the necessary lubricant to each friction pair of the equipment at fixed times and locations. When the distributor or lubrication lines are damaged or malfunction, or when an additional lubrication point, such as a breaker hammer, requires temporary lubrication, the machine can switch to the fuel dispenser pump module. This allows for more flexible and convenient semi-manual lubrication, meaning the location and amount of lubrication are entirely controlled by hand, with the option to stop at any time. 6) Small size and low cost. Compared with traditional lubrication pumps or refueling machines, the two sets of devices share the oil tank, oil pipes and control parts, which takes up less space and is easier to arrange. This saves parts and reduces costs, and has a higher degree of integration. 7) The power of the fuel dispenser pump module is reduced while the displacement remains unchanged. Since the fuel dispenser pump module and the lubrication pump module can be combined to dispense oil, the adaptability to the rated displacement requirement of the fuel dispenser is reduced. A cheaper and smaller fuel dispenser drive mechanism can be selected. 8) Reduced failure rate: Since the filling pump has both automatic and manual lubrication functions, lubrication of parts that are easily damaged by traditional automatic lubrication methods is no longer necessary. For example, when the equipment to be lubricated is an excavator, its connecting rod part is in frequent contact with ore, etc. If the distributor, pipeline and other accessories are installed in the traditional way, it is easy to be damaged, which will cause the entire centralized lubrication system to shut down. With the filling pump, there is no need to install the distributor and pipeline. The oil pump module of the filling pump can be used directly for lubrication.

[0027] Furthermore, the pump head assembly also includes a rotary pressure plate, which, when rotated, drives lubricant to flow towards the plunger assembly of the fuel dispenser pump and the plunger assembly of the lubrication pump. When either the lubrication pump module or the fuel dispenser pump module is operating, the rotary pressure plate rotates accordingly. This design allows the fuel dispenser pump module and the lubrication pump module to share a single rotary pressure plate, further reducing system components, saving costs, and minimizing equipment size.

[0028] Furthermore, the switching valve is a two-position four-way valve. One of the two internal ports of the two-position four-way valve is connected to the oil tank or blocked by a plug, and the other is connected to the lubrication pump plunger assembly or simultaneously to both the lubrication pump plunger assembly and the fuel dispenser pump plunger assembly. The two external ports of the two-position four-way valve constitute the two external ports. This design further limits the use of a two-position four-way valve, which can be used in both dual-line and progressive systems. When used in a progressive system, since the progressive distributor does not need to be unloaded, one internal port can be blocked.

[0029] Furthermore, the switching between the first and second states of the two-position four-way valve is executed by a mechanical reversing mechanism. The control module controls the mechanical reversing mechanism by controlling the forward and reverse rotation of the lubrication pump drive mechanism; the mechanical reversing mechanism includes a lever mechanism. This solution further limits the use of a mechanical reversing mechanism to achieve the switching of the valve state, which has higher stability and lower failure rate compared to electromagnetic and hydraulic methods.

[0030] Furthermore, the switching valve is a two-position three-way valve. One of its two internal ports is connected to the oil tank, and the other is connected to the lubrication pump plunger assembly, or simultaneously to both the lubrication pump plunger assembly and the fuel dispenser pump plunger assembly. One external port of the two-position three-way valve constitutes the external oil port. This design further limits the switching valve to a two-position three-way valve, thus making it suitable for single-line systems.

[0031] Furthermore, the switching valve is a two-position three-way valve. One internal port of the two-position three-way valve is connected to the lubrication pump plunger assembly, or simultaneously to both the lubrication pump plunger assembly and the fuel dispenser pump plunger assembly. The two external ports of the two-position three-way valve constitute the two external ports. This solution is further limited to a two-position three-way valve with two external ports and one internal port. This valve is suitable for the characteristics of a progressive system that does not require unloading and has a simpler structure compared to a four-way valve.

[0032] Furthermore, a directional valve is installed at the connection between the refueling pipe and the internal oil port of the main oil circuit or switching valve. This directional valve controls the flow of grease towards either the downstream end of the refueling pipe or the main oil circuit. Alternatively, a switching valve is installed on both the refueling pipe and the main oil circuit, allowing control of the grease flow towards either the downstream end of the refueling pipe or the main oil circuit. The directional valve or the two switching valves ensure that when grease flows to the refueling pipe, the main oil circuit of the lubrication system is closed, preventing leaks in the main oil circuit from preventing insufficient pressure build-up in the refueling pipe and thus affecting the normal operation of the refueling nozzle. Similarly, when grease flows to the main oil circuit of the lubrication system, the refueling pipe can also be closed, preventing leaks in the refueling pipe from preventing insufficient pressure build-up downstream of the main oil circuit and thus affecting the normal operation of the centralized lubrication system.

[0033] Furthermore, an oil pressure switch, pressure sensor, safety valve, or relief valve is installed before the internal oil port of the switching valve or on the main oil line. These pressure detection and unloading components are primarily designed to ensure stable and safe system pressure, and can also provide feedback signals to help determine the system's status.

[0034] Furthermore, the rotating oil pressure plate is also provided with a stirring rod extending along its axial direction. The stirring rod can contact the inner wall of the oil tank to scrape off the lubricant adhering to the inner wall of the oil tank. This solution defines a shared stirring rod based on a shared rotating oil pressure plate, realizing the functions of stirring the lubricant, scraping off the lubricant adhering to the inner wall of the oil tank, and facilitating the falling of viscous lubricant.

[0035] Furthermore, the rotating oil pressure plate is symmetrically provided with raised oil pressure plates on both sides, and the rotating oil pressure plate can squeeze the lubricant by relying on the raised oil pressure plates on the corresponding sides when rotating forward and backward. Attached Figure Description

[0036] Figure 1This is a schematic diagram of the system principle of Embodiment 1 of the manual / automatic lubricant dispensing system of the present invention; Figure 2 This is a schematic diagram of the system principle of Embodiment 2 of the manual / automatic lubricant dispensing system of the present invention; Figure 3 This is a schematic diagram of the system principle of Embodiment 3 of the manual / automatic lubricant dispensing system of the present invention; Figure 4 This is a schematic diagram of the system principle of Embodiment 4 of the manual / automatic lubricant dispensing system of the present invention; Figure 5 This is a schematic diagram of the system principle of Embodiment 5 of the manual / automatic lubricant dispensing system of the present invention; Figure 6 This is a schematic diagram of the system principle of Embodiment 6 of the manual / automatic lubricant dispensing system of the present invention; Figure 7 This is a schematic diagram of the system principle of Embodiment 7 of the manual / automatic lubricant dispensing system of the present invention; Figure 8 This is a schematic diagram of the system principle of Embodiment 8 of the manual / automatic lubricant dispensing system of the present invention; Figure 9 This is a schematic diagram of the system principle of Embodiment 9 of the manual / automatic lubricant dispensing system of the present invention; Figure 10 This is a schematic diagram of the system principle of Embodiment 10 of the manual / automatic lubricant dispensing system of the present invention; Figure 11 This is a schematic diagram of the system principle of Embodiment 11 of the manual / automatic lubricant dispensing system of the present invention; Figure 12 This is a schematic diagram of the system principle of Embodiment 12 of the manual / automatic lubricant dispensing system of the present invention; Figure 13 This is a schematic diagram of the system principle of Embodiment 13 of the manual / automatic lubricant dispensing system of the present invention; Figure 14 This is a schematic diagram of the system principle of an embodiment 14 of the manual / automatic lubricant dispensing system of the present invention; Figure 15 This is a schematic diagram of the system principle of Embodiment 15 of the manual / automatic lubricant dispensing system of the present invention; Figure 16 This is a schematic diagram of the system principle of Embodiment 16 of the manual / automatic lubricant dispensing system of the present invention; Figure 17 This is a schematic diagram of the system principle of Embodiment 17 of the manual / automatic lubricant dispensing system of the present invention; Figure 18This is a schematic diagram of the system principle of an embodiment 18 of the manual / automatic lubricant dispensing system of the present invention; Figure 19 This is a schematic diagram of the system principle of an embodiment 19 of the manual / automatic lubricant dispensing system of the present invention; Figure 20 This is a schematic diagram of the system principle of an embodiment 20 of the manual / automatic lubricant dispensing system of the present invention; Figure 21 This is a schematic diagram of the system principle of Embodiment 21 of the manual / automatic lubricant dispensing system of the present invention; Figure 22 This is a schematic diagram of the system principle of Embodiment 22 of the manual / automatic lubricant dispensing system of the present invention; Figure 23 This is a schematic diagram of the system principle of Embodiment 23 of the manual / automatic lubricant dispensing system of the present invention; Figure 24 This is a schematic diagram of the system principle of an embodiment 24 of the manual / automatic lubricant dispensing system of the present invention; Figure 25 This is a schematic diagram of the system principle of an embodiment 25 of the manual / automatic lubricant dispensing system of the present invention; Figure 26 This is a schematic diagram of the system principle of Embodiment 26 of the manual / automatic lubricant dispensing system of the present invention; Figure 27 This is a schematic diagram of the system principle of Embodiment 27 of the manual / automatic lubricant dispensing system of the present invention; Figure 28 This is a schematic diagram of the system principle of an embodiment 28 of the manual / automatic lubricant dispensing system of the present invention; Figure 29 This is a schematic diagram of the system principle of an embodiment 29 of the manual / automatic lubricant dispensing system of the present invention; Figure 1-14 In the middle: 1-Controller, 2-Oil tank, 3-Oil pressure switch, 4-Lubrication pump motor, 5-Lubrication pump plunger pair, 6-Fuel dispenser motor, 7-Fuel dispenser pump plunger pair, 8-Two-position four-way valve, 9-Dual-line distributor, 10-Progressive distributor, 11-Fueling pipe, 12-Fueling nozzle, 13-Winding frame, 14-Automatic return reel, 15-One-way valve, 16-Single-line distributor, 17-Sub-progressive distributor, A, B-Main oil circuit; Figure 15-20In the middle: 1-Controller, 2-Oil tank, 3-Oil pressure switch, 4-Lubrication pump motor, 5-Lubrication pump plunger pair, 6-Fuel dispenser motor, 7-Fuel dispenser pump plunger pair, 8-Two-position three-way valve, 9-Single-line distributor, 11-Fueling pipe, 12-Fueling nozzle, 13-Winding frame, 14-Automatic return reel, 15-One-way valve, 16-Oil pressure sensor, A-Main oil circuit; Figure 21-29 In the middle section: 1-Controller, 2-Oil tank, 3-Oil pressure switch, 4-Lubrication pump motor, 5-Lubrication pump plunger assembly, 6-Fuel dispenser motor, 7-Fuel dispenser pump plunger assembly, 81-Two-position three-way valve, 82-Two-position four-way valve, 83-Reversing valve, 84-Switch valve, 85-Three-position four-way valve, 91-Single-line distributor, 92-Double-line distributor, 93-Progressive distributor, 11-Fuel pipe, 12-Fuel nozzle, 13-Winding frame, 14-Automatic return reel, 15-Check valve, 16-Oil pressure sensor, A, B-Main oil circuit. Detailed Implementation

[0037] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0038] Example 1 of a manual / automatic lubricant dispensing system of the present invention: Figure 1 As shown, the system includes a filling pump, control module, main oil circuit, distributor, filling nozzle 12, and pipeline harness, etc. This system is used for the lubrication of various mechanical equipment, not limited to construction machinery, wind power, vehicles, ports, metallurgy, and other fields. This embodiment uses an excavator as an example for illustration.

[0039] The device is installed on the excavator. The filling pump is located near the toolbox. The control module can be the controller 1 built into the filling pump or the controller 1 of the excavator, which is connected via CAN or 485. The oil pipes, distributors and wiring harnesses of the main oil circuit are arranged and fixed on the excavator, covering the lubrication of various lubrication points in the boom, stick and connecting rod areas of the excavator.

[0040] As the focus of this application, the filling pump includes an oil tank 2 and a pump head assembly. The oil tank 2 can be a large-capacity tank, generally with a capacity not less than that of the finished oil drum, so that the entire drum of oil can be filled at once. The oil drum can be made of metal to improve its strength.

[0041] The pump head assembly includes a lubrication pump module and a fuel dispenser pump module. While both modules are named according to their function, their structures differ from those of existing lubrication pumps and fuel dispensers. Both modules can draw lubricant from the oil tank 2 and pump it out. The lubrication pump module includes a lubrication pump drive mechanism and plunger pairs, specifically a lubrication pump motor 4, a transmission mechanism, an eccentric shaft slider mechanism or an eccentric wheel mechanism, and lubrication pump plunger pairs 5. The lubrication pump motor 4 is selected as a low-speed, stable motor. The transmission mechanism includes a reduction gear set. The eccentric shaft mechanism is driven by the output shaft of the lubrication pump motor 4, causing the slider to reciprocate linearly on the guide rail. This, in turn, drives the two plungers of the two lubrication pump plunger pairs 5 on both sides to reciprocate linearly, thus achieving the effect of drawing and pumping lubricant. The inlet of the lubrication pump plunger pairs 5 is connected to the oil tank 2, allowing direct drawing of lubricant from the tank 2. The lubricant can be various types of grease or lubricating oil. Similarly, the fuel dispenser pump module includes a fuel dispenser drive mechanism and plunger assemblies, specifically a fuel dispenser motor 6, a transmission mechanism, an eccentric shaft slider mechanism or an eccentric wheel mechanism, and fuel dispenser pump plunger assemblies 7. A high-speed motor is selected for the fuel dispenser motor 6, as its usage is not high, and its lifespan requirement can be appropriately reduced. The transmission mechanism includes a reduction gear set. The eccentric shaft mechanism is driven by the output shaft of the fuel dispenser motor 6 to rotate, causing the slider to reciprocate linearly on the guide rail. This, in turn, drives the two plungers of the two fuel dispenser pump plunger assemblies 7 on both sides to reciprocate linearly, thereby achieving the effect of sucking and pumping lubricant. The inlet of the fuel dispenser pump plunger assembly 7 is connected to the oil tank 2, meaning it can directly draw lubricant from the oil tank 2. The lubricant can be various types of grease or lubricating oil. The fuel dispenser pump plunger assembly 7 and the lubrication pump plunger assembly 5 draw lubricant from the same oil tank 2.

[0042] Meanwhile, the pump head assembly also has two external oil ports, although one port may be provided in other embodiments. The pump head assembly also includes a two-position four-way valve 8 used as a switching valve. In this embodiment, a mechanically reversing two-position four-way valve 8 is selected, which has the characteristic of more stable performance. The mechanical reversing mechanism includes a toggle member driven by the fuel dispenser motor 6 or the lubrication pump motor 4, and a lever mechanism that swings left and right by being moved by the toggle member. One end or near one end of the lever mechanism is connected to the valve core of the two-position four-way valve 8, thereby driving the valve core to switch the valve position. The forward and reverse rotation of the motor can drive the lever mechanism to swing in different directions from different directions, thereby driving the valve core of the two-position four-way valve 8 to move in different directions. Of the four oil ports of the two-position four-way valve 8, one internal oil port is connected to the oil tank 2, and the other is connected to the outlet of the lubrication pump plunger assembly 5. The outlet of the fuel dispenser pump plunger assembly 7 and the outlet of the lubrication pump plunger assembly 5 are connected to the same oil port. In other embodiments, the outlet of the fuel dispenser pump plunger assembly 7 can also be connected to a certain main oil line. The two external oil ports of the two-position four-way valve 8 constitute the two external oil ports of the pump head assembly, and these two oil ports are respectively connected to the two main oil circuits.

[0043] At least one dual-line distributor 9 can be installed on the two main oil lines. In this embodiment, two are installed: one located on the boom of the excavator, which lubricates the lubrication points near the boom through a branch oil pipe; and the other located on the stick of the excavator, which lubricates the lubrication points near the stick. A progressive distributor 10 is also connected to the main oil line A, which lubricates the lubrication points near the excavator's horsehead. A refueling pipe 11 is also connected to the main oil line B. The connection method can be a detachable connection via a quick-connect oil pipe joint or a three-way ball valve. The end of the refueling pipe 11 is connected to a refueling nozzle 12. The refueling nozzle 12 has a handle and a trigger. The trigger is the switch for the on / off valve that controls whether the refueling nozzle 12 dispenses oil. In other embodiments, the refueling nozzle 12 may not have a switch, but may be directly connected to the lubrication point, and oil can be dispensed as soon as the refueling pump module is started, or the on / off state may be controlled by the aforementioned three-way ball valve. In this embodiment, the refueling hose 11 is generally 3-4 meters long. A coiling frame 13 can be installed on the boom to coil the refueling hose 11 around it. The coiling frame 13 is a structure formed by bending one or more sheet metal parts or steel bars and fixed to the excavator's boom, such as two symmetrically arranged Z-shaped plates. To prevent the refueling hose 11 from detaching from the coiling frame 13, locking mechanisms can also be installed to lock the refueling hose 11. In other embodiments, a coiled hose may be omitted, and a commercially available automatic return reel 14 can be used directly. Regarding the connection position of the refueling hose 11 on the main oil line, if a coiled refueling hose 11 is used, it should be connected as close to the boom as possible to facilitate manual lubrication of the connecting rod area and reduce the length of the refueling hose 11. If an automatic return reel 14 is used, it should be positioned as close as possible to the refueling pump to facilitate the placement and fixation of the larger automatic return reel 14.

[0044] To facilitate system control and ensure system pressure safety, an oil pressure switch 3 can be installed before the P port of the two-position four-way valve 8 or on the main oil line. This switch detects the oil pressure in the main oil line or before the P port. When the pressure reaches a set threshold, it sends a feedback signal to the controller 1, which then stops the lubrication pump motor 4 or the fuel dispenser motor 6. In other embodiments, an oil pressure sensor, safety valve, relief valve, or similar components can be used to replace the oil pressure switch 3.

[0045] The dual-line distributor 9 has a prior art structure, including a valve body, a reversing valve core, and a metering valve core. In other embodiments, the progressive distributor 10 may not be directly connected to the main oil line, but rather connected after the reversing valve core or metering valve core of the dual-line distributor 9, while still maintaining overall connectivity with the main oil line. Similarly, the filler pipe 11 may not be directly connected to the main oil line, but rather connected after the reversing valve core or metering valve core of the dual-line distributor 9, while still maintaining overall connectivity with the main oil line.

[0046] Regarding the control module, the controller 1 in this embodiment can control the lubrication pump module and the fuel dispenser pump module. For the lubrication pump motor 4, the controller 1 can control the start-stop cycle and direction of rotation of the lubrication pump motor 4. The controller 1 controls the lubrication pump according to a program set based on the lubrication requirements of the lubrication system, automatically performing actions such as resting, operating, and motor reversing according to the set rules. It should be noted that the "set rules" in this application do not limit the controller to operating according to only one fixed rule. In fact, the controller can automatically operate according to the corresponding condition program based on feedback from various sensors when certain conditions are met, achieving intelligent lubrication. For example, the controller automatically adjusts the lubrication pattern based on the equipment's load (corresponding to pressure or force sensors installed on the equipment). When the load is heavy, it can switch to a high-load control program, which controls the lubrication pump to inject grease more frequently and inject less grease. Another example is the controller automatically switching to a low-temperature mode based on temperature sensors on the equipment or lubrication system, detecting ambient or lubrication point temperatures. When the temperature is low, the controller controls the lubrication pump according to the corresponding low-temperature program, increasing the lubrication pump's working time per injection and reducing its rest time. Controlling the fuel dispenser motor 6 is relatively simple. The fuel dispenser is manually started, and once in mode, the motor 6 is controlled to run. However, fuel dispensing is manually controlled; the fuel dispenser mode is semi-automatic, not based on a pre-set schedule of stopping and starting. The timing of start-up, stopping, dispensing amount, and lubrication point selection are determined by human will. In this embodiment, in lubrication mode, controller 1 only activates the lubrication pump module for automatic centralized lubrication. In fuel dispenser mode, controller 1 needs to activate the fuel dispenser pump module and the lubrication pump module simultaneously or sequentially, so that the two modules can combine their oil circuits for manual lubrication of the fuel nozzle 12. In other embodiments, only the fuel dispenser pump module can be activated in fuel dispenser mode. When controller 1 and the two-position four-way valve 8 work together, the two-position four-way valve 8 has two working states: a first state in which the lubrication pump plunger assembly 5 pumps lubricant out through the external oil port, and a second state in which the fuel dispenser pump plunger assembly 7 or the fuel dispenser pump plunger assembly 7 and the lubrication pump plunger assembly 5 simultaneously pump lubricant out through one external oil port.

[0047] In other embodiments, the lubrication pump drive mechanism and the refueling machine drive mechanism are not limited to electric motors; pneumatic motors or even hydraulic mechanisms can also be used. The valve position switching of the two-position four-way valve 8 can also be achieved using electromagnetic or hydraulic drive. For the transmission method of the plunger pair, other structures that can convert rotational motion to linear motion can also be used, such as electric push rods, ball screws, crank-slider systems, etc. The control module can also use an automatic control device with lubrication equipment or communicate wirelessly with a mobile terminal, using the mobile terminal as a human-machine interface to control the system and adjust parameters. Regarding the number of dual-line distributors 9 and progressive distributors 10, one or more dual-line distributors 9 can be provided, and one or more progressive distributors 10 can be provided, or no progressive distributors 10 can be provided. Alternatively, an independent lubrication oil pipe can be directly connected to the main oil line and directly connected to a specific lubrication point.

[0048] In this embodiment, the rotating pressure plate can be driven by the lubrication pump motor 4. When in fuel dispenser mode, the lubrication pump motor 4 is started, thereby driving the rotating pressure plate to rotate. That is, the rotating pressure plate must work regardless of whether it is in fuel dispenser mode or lubrication pump mode, thus avoiding cavitation when drawing lubricant from the fuel tank 2 in either mode. It should be noted that since the displacement of the lubrication pump module is generally smaller than that of the fuel dispenser pump module, to avoid cavitation when the fuel dispenser pump module is working, the oil pressure of the rotating pressure plate can be further increased by increasing the number of blades on the rotating pressure plate and improving the structure. For example, the rotating pressure plate with only one blade can be changed to two or four blades. In other embodiments, the rotating pressure plate can also be directly driven by the fuel dispenser motor 6. In this case, when the lubrication pump module is started, the fuel dispenser motor 6 also needs to be started to drive the rotating pressure plate to rotate. Alternatively, in other embodiments, the fuel dispenser motor 6 and the lubrication pump motor 4 can be independently controlled to rotate the rotating pressure plate through a transmission structure such as a ratchet. In this embodiment, a stirring rod is also provided on the rotating pressure plate. The stirring rod extends along the axial direction of the oil tank 2. When the rotating pressure plate rotates, the stirring rod can contact the inner wall of the oil tank 2, thereby scraping off the lubricant adhering to the inner wall of the oil tank 2, causing the lubricant to detach from the inner wall of the oil tank 2, and also stirring the lubricant to facilitate its downward movement. Symmetrically arranged on both sides of the rotating pressure plate are raised pressure plates. When the rotating pressure plate rotates forward and backward, the corresponding raised pressure plates on the opposite sides can squeeze the lubricant.

[0049] In other embodiments, a piston structure can also be provided at the top of the oil tank. The piston diameter is the same as the inner diameter of the oil tank. When the piston moves downward, it can squeeze the lubricant downward, causing the lubricant to move toward the plunger pair. The function is basically the same as that of the rotating oil pressure plate and the stirring rod.

[0050] In other embodiments, an inverted T-shaped fixed stirring rod can be coaxially arranged in the middle of the rated oil tank. For example, the fixed stirring rod can be fixed to the inner wall of the oil tank or the lower part of the oil tank cover by a bracket. The lower end of the fixed stirring rod is a certain distance from the rotating oil pressure plate. When the lubricant bulges and accumulates in the middle as the rotating oil pressure plate and stirring rod move, the fixed stirring rod can break up this bulging structure.

[0051] The control logic in this embodiment is as follows: 1. In centralized lubrication mode, after startup, controller 1 controls the lubrication pump module to start working, while the refueling pump module does not work. The lubrication pump module performs the forward-reverse-forward-reverse... operation of the motor in sequence according to the lubrication setting program to achieve oil output from the two main oil circuits ABAB... and oil output from each oil outlet of the dual-line distributor 9 in sequence. 2. When the fuel dispenser pump module needs to work, activate the dedicated control button on the fuel dispenser or the virtual button on the mobile terminal. The fuel dispenser will start, the timer will start counting (assuming a set duration of 60 minutes), and at the same time, control the lubrication pump motor 4 to reverse, and switch the mechanical reversing valve to the main oil line B to dispense oil. The fuel nozzle 12 connected to line B can then be used for refueling. 3. During the operation of the fuel nozzle 12, when the trigger (switch) of the fuel nozzle 12 is stopped, since no oil is dispensed, the pressure at port P (oil inlet) inside the B circuit or the two-position four-way valve 8 increases. When the pressure reaches the threshold of the oil pressure switch 3, the oil pressure switch 3 trips and sends a feedback signal to the controller 1. The controller 1 then stops the motors of the fuel dispenser and the lubrication pump. When the fuel nozzle 12 is used again, the pressure at port B or P decreases. When the pressure reaches another threshold of the oil pressure switch 3, a feedback signal is sent to the controller 1, which then starts the motors of the fuel dispenser and the lubrication pump to perform the fuel dispensing operation again. 4. After the timer has run for 60 minutes (assuming that the refueling work of the fuel dispenser can be completed within this time), controller 1 will automatically switch to lubrication mode, in which only the lubrication pump will work and the fuel dispenser will not work; 5. After switching back to lubrication mode, the lubrication pump rotates forward, and the mechanical reversing valve switches to oil outlet A (if the lubrication pump reverses first after switching back to lubrication mode, oil will no longer be dispensed from B—because oil has already been dispensed during the refueling pump's stroke, and the pressure in B continues to rise until it reaches the pressure value set by oil pressure switch 3, then switches to oil outlet A. This is just a waste of one stroke without dispensing oil, and does not affect the normal operation of the lubrication system).

[0052] In other embodiments, a three-way ball valve can also be installed on the main oil circuit B. The inlet of the three-way ball valve is connected to the main oil circuit, and one of its two outlets is connected to the refueling nozzle via a refueling pipe, while the other is connected to the progressive distributor via a lubricating oil pipe. The progressive distributor can be used to lubricate areas such as the connecting rod, breaker hammer, or slewing bearing of the excavator. By switching the three-way ball valve, the connection between the main oil circuit and the refueling nozzle or the progressive distributor can be changed. In other embodiments, a switch valve can be installed at the connection point between the refueling nozzle and the main oil circuit via the refueling pipe to control the opening and closing of the refueling pipe and prevent oil leakage from the refueling nozzle when it is not in use.

[0053] In other embodiments, the button for activating the fuel dispenser mode can be located on the pump head assembly, the boom, or the fuel nozzle. Alternatively, a double or triple switch button can be installed at at least two of the three locations, and any button can control the activation or deactivation of the fuel dispenser mode.

[0054] Example 2 of the manual / automatic lubricant dispensing system of the present invention: Figure 2 As shown, the difference from Embodiment 1 is that the outlet of the lubricating pump plunger assembly 5 is connected to the internal inlet (P port) of the two-position four-way valve 8 through the internal oil passage inside the pump head assembly, while the outlet of the fuel dispenser pump plunger assembly 7 is connected to the main oil circuit through the external oil pipe or connected to one of the external outlets of the two-position four-way valve 8. In this embodiment, it is connected to the main oil circuit B. Correspondingly, the fuel nozzle 12 is also connected to the main oil circuit B through the fuel pipe 11.

[0055] Embodiment 3 of the manual / automatic lubricant dispensing system of the present invention: Figure 3 As shown, the difference from Embodiment 1 is that this embodiment uses an automatic return reel 14. Relying on the winding mechanism, the refueling pipe 11 is automatically wound and coiled, making the operation more convenient. At the same time, in order to facilitate the placement and fixation of the automatic return reel 14, the refueling pipe 11 is connected to the main oil line near the refueling pump.

[0056] Example 4 of the manual / automatic lubricant dispensing system of the present invention: Figure 4 As shown, the difference from Embodiment 3 is that the outlet of the fuel dispenser pump plunger assembly 7 is connected to the main oil circuit through an external oil pipe or connected to one of the external outlets of the two-position four-way valve 8. In this embodiment, it is connected to the main oil circuit B.

[0057] Example 5 of the manual / automatic lubricant dispensing system of the present invention: Figure 5As shown, the difference from Embodiment 1 is that the system only includes one dual-line distributor 9, one progressive distributor 10, and one single-line distributor 16. The dual-line distributor 9 is connected to two main oil lines, corresponding to the various lubrication points on the excavator's boom. The single-line distributor 16 and the progressive distributor 10 are connected to the same main oil line A. The oil nozzle 12 is connected to the main oil line B. The single-line distributor 16 is used to lubricate the various lubrication points on the excavator's boom, while the progressive distributor 10 is used to lubricate the lubrication points at the horse's head. Therefore, the single-line distributor 16 is installed on the excavator's boom, the dual-line distributor 9 is installed on the excavator's boom, and the progressive distributor 10 is installed on the boom near the horse's head. During operation, when oil is discharged from the main oil line B, the single-line distributor 16 is in an unloaded state.

[0058] Example 6 of the manual / automatic lubricant dispensing system of the present invention: Figure 6 As shown, the difference from Embodiment 5 is that the dual-line distributor 9 is installed on the boom to lubricate the various lubrication points on the boom, while the single-line distributor 16 is installed on the stick to lubricate the various lubrication points on the stick.

[0059] Example 7 of the manual / automatic lubricant dispensing system of the present invention: Figure 7 As shown, the difference from Embodiment 1 is that two dual-line distributors 9 are connected to the two main oil lines, respectively for lubricating the lubrication points on the boom and stick of the excavator, and are installed on the boom and stick respectively. A female progressive distributor 10 and a female progressive distributor 17 connected to the oil outlet of the female progressive distributor 10 are connected to main oil line A. The female progressive distributor 10 is located on the stick and installed near the horse head, lubricating the lubrication points at the horse head, while the female progressive distributor 17 is installed on the connecting rod, used to lubricate the various lubrication points on the connecting rod. It is worth mentioning that the female progressive distributor 10 connected to the female progressive distributor 17 is a plate-type progressive distributor, and the displacement of the corresponding distributor plate of the female progressive distributor 17 is much larger than the displacement of the other distributor plates. A refueling nozzle 12 is connected to main oil line B via a refueling pipe 11. The working process of this system is basically similar to that of Embodiment 1.

[0060] Example 8 of the manual / automatic lubricant dispensing system of the present invention: Figure 8As shown, the difference from Embodiment 1 is that, of the two main oil lines, one is dedicated to centralized lubrication, and the other is dedicated to semi-manual lubrication of the refueling machine. Specifically, a female progressive distributor 10 is connected to main oil line A, and two female progressive distributors 17 are connected to the outlet of the female progressive distributor 10. The female progressive distributor 10 is installed on the boom of the excavator to lubricate the lubrication points at the boom, and the two female progressive distributors 17 correspond to the lubrication points at the stick and connecting rod, respectively, and are also fixed on the stick and connecting rod, respectively. Main oil line B is also normally arranged along the excavator, and the refueling nozzle 12 is directly connected to the end of main oil line B or connected to the refueling nozzle 12 through a quick oil pipe connector. Since the progressive distributor does not need to be unloaded after its operation, the two-position four-way valve 8 can also seal the oil port of the internal oil tank 2 with a plug. During operation, after normal startup, the default mode is lubrication mode. Controller 1 controls the lubrication pump motor 4 to start and rotate forward. Lubricant enters through port P of the two-position four-way valve 8, flows out through port A, enters the main oil circuit A, and then enters the mother progressive distributor 10 and the daughter progressive distributor 17, etc., and is directly introduced to the various lubrication points to be lubricated through the lubrication oil pipe. In the fuel dispenser mode, after manually starting this mode, controller 1 controls the lubrication pump motor 4 to reverse, so that the two-position four-way valve 8 switches to port B to dispense oil. Then, controller 1 controls the fuel dispenser motor 6 to start. Lubricant enters through port P of the two-position four-way valve 8, flows through port B into the main oil circuit B, and then enters the fuel pipe 11 and the fuel nozzle 12. The lubricant can be dispensed in real time by manually pulling the switch on the fuel nozzle 12.

[0061] Example 9 of the manual / automatic lubricant dispensing system of the present invention: Figure 9 As shown, the difference from embodiment 8 is that the internal oil port of the two-position four-way valve 8 connected to the oil tank 2 is not blocked. However, in order to prevent the lubricant of the progressive distributor 10 from flowing toward the oil tank 2, a one-way valve 15 can be set upstream of the oil inlet of the main progressive distributor 10 in the main oil circuit A to prevent the progressive distributor 10 from returning oil or unloading.

[0062] Example 10 of the manual / automatic lubricant dispensing system of the present invention: Figure 10 As shown, the difference from Embodiment 9 is that the outlet of the fuel dispenser pump plunger assembly 7 is connected to the main oil circuit through an external oil pipe or connected to one of the external outlets of the two-position four-way valve 8. In this embodiment, it is connected to the main oil circuit B.

[0063] Example 11 of the manual / automatic lubricant dispensing system of the present invention: Figure 11As shown, the difference from embodiment 9 is that the main oil line B is directly connected to the automatic return reel 14. The main oil line B does not need to be installed on the excavator. In other words, the automatic return reel 14 can be directly connected to port B of the two-position four-way valve 8 through the oil filling pipe 11. Compared with embodiment 9, this solution only requires one main oil line A to be installed on the excavator. The automatic return reel 14 can also be directly placed and fixed near the toolbox.

[0064] Example 12 of the manual / automatic lubricant dispensing system of the present invention: Figure 12 As shown, the difference from Embodiment 11 is that the outlet of the fuel dispenser pump plunger assembly 7 is connected to the main oil circuit through an external oil pipe or connected to one of the external outlets of the two-position four-way valve 8. In this embodiment, it is connected to the main oil circuit B.

[0065] Example 13 of the present invention: a manual / automatic lubricant dispensing system. Figure 13 As shown, the difference from Embodiment 10 is that a one-way valve 15 is also provided on the main oil circuit B, and the one-way valve 15 is located upstream of the interface between the fuel dispenser pump plunger assembly 7 and the main oil circuit B, to prevent the lubricant of the fuel dispenser pump plunger assembly 7 from returning to the main oil circuit B in the reverse direction.

[0066] Example 14 of the present invention: a manual / automatic lubricant dispensing system. Figure 14 As shown, the difference from Embodiment 8 is that an oil pressure switch 3 is provided upstream of the oil inlet of the sub-progressive distributor 17 installed on the connecting rod. The setting of the oil pressure switch 3 can directly determine the blockage of the connecting rod that is farthest away and has the highest probability of blockage. The oil pressure switch 3 in the filling pump is used to determine which of the two main oil lines A and B is blocked. The setting of two oil pressure switches 3 makes the determination of the blockage location clearer.

[0067] Example 15 of the present invention: a manual / automatic lubricant dispensing system. Figure 15As shown, the difference from Embodiment 1 is that this system is a single-line lubrication system. Its switching valve is a two-position three-way valve 8, which has only three oil ports: P, T, and A. Correspondingly, there is only one main oil circuit A. Multiple single-line distributors 9 are connected to the main oil circuit A, and they are connected to the oil gun 12 through the oil filling pipe 11. In lubrication mode, the lubrication pump motor 4 rotates, driving the lubrication pump plunger pair 5 to draw lubricant from the oil tank 2 and pump it to the P port of the two-position three-way valve. Then, it enters the main oil circuit through the A port, and then enters each single-line distributor 9 to lubricate the various lubrication points of the boom, connecting rod, and stick corresponding to the single-line distributor 9. After one oil discharge, the controller 1 controls the lubrication pump motor 4 to stop according to the feedback of the oil pressure switch 3 and controls the two-position three-way valve 8 to switch to the A and T port conduction state. The single-line distributors 9 and the main oil circuit are unloaded and return to the oil tank 2, and then enter a rest period to complete one cycle. The combination of multiple cycles is the normal working process of the centralized lubrication system. When the fuel dispenser mode is needed, the user can manually switch to fuel dispenser mode via interactive means, such as by using a control button. After receiving the switching signal, the controller 1 controls the two-position three-way valve 8 to switch to the state where the P port is connected to the A port, controls the fuel dispenser motor 6 to start, and controls the lubrication pump motor 4 to start as well. Both the lubrication pump plunger and the fuel dispenser pump plunger draw lubricant from the oil tank 2 and enter the two-position three-way valve 8 through the P port, and then enter the main oil circuit. The single-line distributor 9 dispenses oil once, and the reversing plunger of the single-line distributor 9 stays at the limit position and does not reverse (it only reverses after the main oil circuit is unloaded). At this time, the user can manually open the switch (trigger) of the fuel nozzle 12 to manually refuel.

[0068] Example 16 of the present invention: a manual / automatic lubricant dispensing system. Figure 16 As shown, the difference from Embodiment 15 is that the outlet of the lubricating pump plunger assembly 5 is connected to the internal inlet (P port) of the two-position three-way valve 8 through the internal oil passage inside the pump head assembly, while the outlet of the fuel dispenser pump plunger assembly 7 is connected to the main oil circuit through the external oil pipe or connected to the external outlet A of the two-position three-way valve 8. Correspondingly, the fuel nozzle 12 is also detachably connected to the main oil circuit A through the fuel pipe 11.

[0069] Example 17 of the present invention: a manual / automatic lubricant dispensing system. Figure 17 As shown, the difference from Embodiment 15 is that two single-line distributors 9 are set on the main oil line of the system. One single-line distributor 9 is installed on the boom to lubricate the lubrication points on the boom, and the other single-line distributor 9 is installed on the connecting rod to lubricate the various lubrication points on the connecting rod. The lubrication of the horse head and other parts is carried out by the oil gun 12 for semi-automatic lubrication.

[0070] Example 18 of the present invention: a manual / automatic lubricant dispensing system. Figure 18As shown, the difference from Embodiment 15 is that this embodiment uses an automatic return reel 14 instead. Relying on the winding mechanism, the refueling pipe 11 is automatically wound and coiled, making the operation more convenient. At the same time, in order to facilitate the placement and fixing of the automatic return reel 14, the refueling pipe 11 is connected to the main oil line near the refueling pump.

[0071] Example 19 of the present invention: a manual / automatic lubricant dispensing system. Figure 19 As shown, the difference from embodiment 18 is that the outlet of the lubricating pump plunger assembly 5 is connected to the internal inlet (P port) of the two-position three-way valve 8 through the internal oil passage inside the pump head assembly, while the outlet of the fuel dispenser pump plunger assembly 7 is connected to the main oil circuit through the external oil pipe or connected to the external outlet A of the two-position three-way valve 8. Correspondingly, the fuel nozzle 12 is also detachably connected to the front end of the main oil circuit A through the fuel pipe 11, and the fuel pipe 11 is wound up by the automatic return reel 14.

[0072] Example 20 of the manual / automatic lubricant dispensing system of the present invention: Figure 20 As shown, the difference from Embodiment 15 is that an oil pressure sensor 16 is also provided on the main oil line. It can generally be set at the end of the main oil line to determine whether the oil pressure of the main oil line has reached the set value.

[0073] Example 21 of the manual / automatic lubricant dispensing system of the present invention: Figure 21 As shown, the difference from Embodiment 1 is that a three-way electromagnetic directional valve 83 is installed at the connection between the main oil circuit B and the refueling pipe 11. Under the control of the controller 1, the electromagnetic directional valve 83 can control the flow of grease in the upstream main oil circuit B to the refueling pipe 11 or control the flow of grease to the downstream of the main oil circuit B until it enters the dual-line distributor 92. The setting of the directional valve 83 ensures that when the grease flows to the refueling pipe 11, the main oil circuit of the lubrication system is in a closed state, preventing the grease from failing to build up sufficient pressure in the refueling pipe 11 due to leakage in the main oil circuit, thus affecting the normal use of the refueling nozzle 12. Similarly, when the grease flows to the main oil circuit of the lubrication system, the refueling pipe 11 can also be closed, preventing the downstream of the main oil circuit from failing to build up sufficient pressure due to leakage in the refueling pipe 11, thus affecting the normal operation of the centralized lubrication system. In this embodiment, in order to reduce the length of the electromagnetic directional valve 83's wire, the electromagnetic directional valve 83 is set as close as possible to the controller 1. Preferably, when the solenoid directional valve 83 is de-energized, it closes the filler pipe 11, connecting the upstream and downstream of the main oil circuit B for centralized lubrication; while when the solenoid valve is energized, it switches to be connected to the filler pipe 11. This configuration is more energy-efficient and less prone to overheating. In other embodiments, the solenoid directional valve 83 can be replaced with a manual directional valve 83, a pneumatic directional valve 83, a hydraulic directional valve 83, or an electric directional valve 83, etc.

[0074] Example 22 of the manual / automatic lubricant dispensing system of the present invention: Figure 22 As shown, the difference from embodiment 21 is that the three-way solenoid directional valve 83 can be replaced with two solenoid switching valves 84. The two solenoid switching valves 84 are respectively installed on the filler pipe 11 and the main oil line B. The solenoid switching valve 84 installed on the main oil line B is positioned as close as possible to the interface between the filler pipe 11 and the main oil line, but must be downstream of that interface. During operation, the two solenoid switching valves 84 perform corresponding actions. Ideally, the two solenoid switching valves 84 should be in a linked state where one is open and the other is closed to avoid the impact of leakage in one pipeline on the other. Of course, in other embodiments, at least one of the two switching valves 84 can be replaced with a manual switching valve 84, a pneumatic switching valve 84, a hydraulic switching valve 84, or an electric switching valve 84, etc.

[0075] Example 23 of the present invention: a manual / automatic lubricant dispensing system. Figure 23 As shown, the difference from embodiment 21 is that the electromagnetic reversing valve 83 is located in the oil line before the internal oil port (port P in the figure) of the two-position four-way valve 82, but it is located after the outlet of the lubrication pump plunger assembly 5 and the fuel dispenser pump plunger assembly 7, rather than in the main oil line.

[0076] Example 24 of the present invention: a manual / automatic lubricant dispensing system. Figure 24 As shown, the difference from Embodiment 21 is that the lubrication system corresponding to this system is a dual-oil-circuit progressive centralized lubrication system, which has two main oil circuits. A mother-child progressive distributor 93 is installed on each of the two main oil circuits. A two-position three-way valve 81 is installed in the pump head assembly. A reversing valve 83 is installed on one of the main oil circuits B. The third oil port of the reversing valve 83 is connected to the oil filling pipe 11. The reversing valve 83 is used to switch whether the upstream of the main oil circuit B is connected to its downstream or to the oil filling pipe 11.

[0077] Example 25 of the manual / automatic lubricant dispensing system of the present invention: Figure 25 As shown, the difference from embodiment 24 is that the reversing valve 83 is no longer located on the main oil line, but on the oil line before the internal oil port (P port) of the two-position three-way valve 81, but it needs to be located downstream of the lubrication pump plunger assembly 5 and the fuel dispenser pump plunger assembly 7.

[0078] Example 26 of the present invention: a manual / automatic lubricant dispensing system. Figure 26 As shown, the difference from Embodiment 21 is that the system is a single-line centralized lubrication system with a main oil circuit. The switching valve in the pump head assembly is a two-position three-way valve 81, and its external oil port is connected to the main oil circuit A. A three-way solenoid directional valve 83 is provided on the main oil circuit A, and the third oil port of the directional valve 83 is connected to the oil filling pipe 11.

[0079] Example 27 of the present invention: a manual / automatic lubricant dispensing system. Figure 27 As shown, the difference from embodiment 26 is that the reversing valve 83 is no longer located on the main oil line, but on the oil line before the internal oil port (P port) of the two-position three-way valve 81, but it needs to be located downstream of the lubrication pump plunger pair 5 and the fuel dispenser pump plunger pair 7.

[0080] Example 28 of the present invention: a manual / automatic lubricant dispensing system. Figure 28 As shown, the difference from embodiment 26 is that the three-way solenoid directional valve 83 is replaced with two solenoid switching valves 84, which are located on the refueling pipe 11 and the main oil line, respectively. The solenoid switching valve 84 located on the main oil line needs to be located upstream of the single-line distributor 91.

[0081] Example 29 of the present invention: a manual / automatic lubricant dispensing system. Figure 29 As shown, the difference from Embodiment 24 is that the switching valve and the directional valve are combined into a single three-position four-way valve 85. This three-position four-way valve 85 can be a solenoid valve or a hydraulic valve. Each valve position corresponds to a state. In the first valve position, the grease entering the valve enters the main oil circuit A through the internal oil passage, thereby supplying grease to the progressive distributor on the main oil circuit A. In the second valve position, the grease entering the valve enters the refueling pipe, supplying grease to the refueling nozzle. In the third valve position, the grease entering the valve enters the main oil circuit B through the internal oil passage, thereby supplying grease to the progressive distributor on the main oil circuit B. During operation, when the refueling machine needs to be used, a signal is sent to the controller to control the three-position four-way valve 85 to switch to the second valve position. When lubrication is needed at the lubrication point corresponding to the main oil circuit A, the controller switches to the first valve position; when lubrication is needed at the lubrication point corresponding to the main oil circuit B, the controller switches to the second valve position.

[0082] The structure of the manual / automatic lubricant dispensing device of the present invention is the same as that of the dispensing pump in the various embodiments of the manual / automatic lubricant dispensing system described above, and will not be described again.

Claims

1. A manual / automatic lubricant dispensing system, characterized in that, include: A refueling pump includes an interconnected oil tank and a pump head assembly. The pump head assembly includes a lubrication pump module and a fuel dispenser pump module, both of which can draw lubricant from the oil tank and pump it out. The lubrication pump module includes a lubrication pump drive mechanism and a lubrication pump plunger assembly driven therefrom. The fuel dispenser pump module includes a fuel dispenser drive mechanism and a fuel dispenser pump plunger assembly driven therefrom. The pump head assembly also includes a switching valve. The lubrication pump plunger assembly, or both the lubrication pump plunger assembly and the fuel dispenser pump plunger assembly, are connected to the internal oil port of the switching valve. The switching valve has one or two external oil ports connected to external oil pipes. The switching valve has a first state in which the lubrication pump plunger assembly pumps lubricant outward through the external oil ports, and a second state in which the fuel dispenser pump plunger assembly, or both the fuel dispenser pump plunger assembly and the lubrication pump plunger assembly, pumps lubricant outward through one external oil port. The control module is used to control the start and stop of the lubrication pump module and the fuel dispenser pump module, and can also control the switching valve to switch between the first and second states. The lubrication pump module works automatically according to a set program, switching between working and resting. The fuel dispenser pump module works by manually operating the control module, which then controls the fuel dispenser pump module or simultaneously controls the start and stop of both the fuel dispenser pump module and the lubrication pump module. The main oil circuit is connected to the external oil ports one by one; The main distributor is connected to the main oil line through its inlet, and its outlet is connected to the lubrication point to be lubricated through branch lines or sub-distributors and their lines. The nozzle of the refueling gun is connected to the internal oil port of the main oil circuit or the switching valve through the refueling pipe.

2. The manual / automatic lubricant dispensing system according to claim 1, characterized in that, The pump head assembly includes a rotary pressure plate that, when rotated, drives lubricant to flow toward the plunger assembly of the fuel dispenser pump and the plunger assembly of the lubrication pump. When either the lubrication pump module or the fuel dispenser pump module is in operation, the rotary pressure plate rotates accordingly.

3. The manual / automatic lubricant dispensing system according to claim 2, characterized in that, The switching valve is a two-position four-way valve. One of the two internal oil ports of the two-position four-way valve is connected to the oil tank or is blocked by a plug, and the other is connected to the lubrication pump plunger assembly or simultaneously to the lubrication pump plunger assembly and the fuel dispenser pump plunger assembly. The two external oil ports of the two-position four-way valve constitute the two external oil ports.

4. The manual / automatic lubricant dispensing system according to claim 3, characterized in that, The switching between the first and second states of the two-position four-way valve is performed by a mechanical reversing mechanism. The control module controls the mechanical reversing mechanism by controlling the forward and reverse rotation of the lubrication pump drive mechanism. The mechanical reversing mechanism includes a lever mechanism.

5. The manual / automatic lubricant dispensing system according to claim 2, characterized in that, The switching valve is a two-position three-way valve. One of the two internal oil ports of the two-position three-way valve is connected to the oil tank, and the other is connected to the lubrication pump plunger assembly or simultaneously to the lubrication pump plunger assembly and the fuel dispenser pump plunger assembly. One external oil port of the two-position three-way valve constitutes the external oil port.

6. The manual / automatic lubricant dispensing system according to claim 2, characterized in that, The switching valve is a two-position three-way valve. One internal oil port of the two-position three-way valve is connected to the lubrication pump plunger assembly or simultaneously to the lubrication pump plunger assembly and the fuel dispenser pump plunger assembly. The two external oil ports of the two-position three-way valve constitute the two external oil ports.

7. The manual / automatic lubricant dispensing system according to any one of claims 1-4, characterized in that, There are two main oil lines and two external oil ports. The main distributor is a dual-line distributor, and at least one dual-line distributor is connected to both main oil lines simultaneously.

8. The manual / automatic lubricant dispensing system according to claim 7, characterized in that, A progressive distributor and / or the fuel nozzle is connected to one of the two main fuel lines, the fuel nozzle having a manual on / off valve, and a progressive distributor and / or a single-line distributor is connected to the other main fuel line.

9. The manual / automatic lubricant dispensing system according to claim 8, characterized in that, The upstream inlet of the progressive distributor is equipped with a sensor for detecting pipeline pressure or flow, or the progressive distributor is equipped with a sensor for detecting the action of its plunger, in order to determine whether the progressive distributor and the pipeline it is in are blocked.

10. The manual / automatic lubricant dispensing system according to claim 5, characterized in that, There is one main oil circuit and one external oil port. The main distributor is a single-line distributor, and there is at least one single-line distributor.

11. The manual / automatic lubricant dispensing system according to any one of claims 3, 4, and 6, characterized in that, There are two main oil lines and two external oil inlets. The main distributor is a progressive distributor, which is connected to one main oil line for centralized lubrication. The oil nozzle is connected to the other main oil line through an oil filling pipe for manual lubrication.

12. The manual / automatic lubricant dispensing system according to claim 1, characterized in that, A reversing valve is installed at the connection between the refueling pipe and the internal oil port of the main oil circuit or the switching valve. The reversing valve can control the flow of grease towards one of the downstream directions of the refueling pipe and the main oil circuit. Alternatively, a switching valve is installed on the refueling pipe and the main oil circuit respectively. By controlling the two switching valves respectively, the flow of grease towards one of the downstream directions of the refueling pipe and the main oil circuit can be controlled.

13. The manual / automatic lubricant dispensing system according to claim 1, characterized in that, The outlets of both the fuel dispenser pump plunger assembly and the lubrication pump plunger assembly are connected to the internal inlet of the switching valve; or, the outlet of the lubrication pump plunger assembly is connected to the internal inlet of the switching valve, and the outlets of the fuel nozzle and the fuel dispenser pump plunger assembly are connected to the same main oil circuit.

14. The manual / automatic lubricant dispensing system according to claim 1, characterized in that, The refueling hose connected to the nozzle can be coiled around the equipment to be lubricated or coiled around an automatic winding mechanism.

15. The manual / automatic lubricant dispensing system according to claim 1 or 14, characterized in that, The refueling hose can be detachably connected to the main fuel line via a quick connector.

16. The manual / automatic lubricant dispensing system according to claim 1, characterized in that, An oil pressure switch, pressure sensor, safety valve, or relief valve is installed before the internal oil port of the switching valve or on the main oil line.

17. The manual / automatic lubricant dispensing system according to claim 2, characterized in that, The rotating oil pressure plate is also provided with a stirring rod extending along its axial direction. The stirring rod can contact the inner wall of the oil tank to scrape off the lubricant adhering to the inner wall of the oil tank.

18. The manual / automatic lubricant dispensing system according to any one of claims 2-4, characterized in that, The rotating oil pressure plate has symmetrical raised oil pressure plates on both sides. When the rotating oil pressure plate rotates forward and backward, it can squeeze the lubricant by relying on the raised oil pressure plates on the corresponding sides.

19. A manual / automatic lubricant dispensing device, characterized in that, include: Pump casing; The oil tank is mounted on the pump casing; A pump head assembly, mounted on a pump housing, includes a lubrication pump module and a fuel dispenser pump module. Both the lubrication pump module and the fuel dispenser pump module can draw lubricant from the fuel tank and pump it out. The lubrication pump module includes a lubrication pump drive mechanism and a lubrication pump plunger assembly driven by it. The fuel dispenser pump module includes a fuel dispenser drive mechanism and a fuel dispenser pump plunger assembly driven by it. The pump head assembly also includes a switching valve. The lubrication pump plunger assembly or both the lubrication pump plunger assembly and the fuel dispenser pump plunger assembly are simultaneously connected to the internal oil port of the switching valve. The switching valve has one or two external oil ports connected to external oil pipes. The switching valve has a first state in which the lubrication pump plunger assembly pumps lubricant out through the external oil port, and a second state in which the fuel dispenser pump plunger assembly or both the fuel dispenser pump plunger assembly and the lubrication pump plunger assembly pump lubricant out through one external oil port. The control module is used to control the start and stop of the lubrication pump module and the fuel dispenser pump module, and can also control the switching valve to switch between the first and second states. The lubrication pump module works automatically according to a set program, switching between working and resting. The fuel dispenser pump module is operated manually by the control module, which then controls the fuel dispenser pump module or simultaneously controls the start and stop of both the fuel dispenser pump module and the lubrication pump module.

20. The manual / automatic lubricant dispensing device according to claim 19, characterized in that, The pump head assembly also includes a rotary pressure plate, which, when rotated, drives lubricant to flow toward the plunger assembly of the fuel dispenser pump and the plunger assembly of the lubrication pump. When either the lubrication pump module or the fuel dispenser pump module is in operation, the rotary pressure plate rotates accordingly.

21. The manual / automatic lubricant dispensing device according to claim 20, characterized in that, The switching valve is a two-position four-way valve. One of the two internal oil ports of the two-position four-way valve is connected to the oil tank or is blocked by a plug, and the other is connected to the lubrication pump plunger assembly or simultaneously to the lubrication pump plunger assembly and the fuel dispenser pump plunger assembly. The two external oil ports of the two-position four-way valve constitute the two external oil ports.

22. The manual / automatic lubricant dispensing device according to claim 21, characterized in that, The switching between the first and second states of the two-position four-way valve is performed by a mechanical reversing mechanism. The control module controls the mechanical reversing mechanism by controlling the forward and reverse rotation of the lubrication pump drive mechanism. The mechanical reversing mechanism includes a lever mechanism.

23. The manual / automatic lubricant dispensing device according to claim 20, characterized in that, The switching valve is a two-position three-way valve. One of the two internal oil ports of the two-position three-way valve is connected to the oil tank, and the other is connected to the lubrication pump plunger assembly or simultaneously to the lubrication pump plunger assembly and the fuel dispenser pump plunger assembly. One external oil port of the two-position three-way valve constitutes the external oil port.

24. The manual / automatic lubricant dispensing device according to claim 20, characterized in that, The switching valve is a two-position three-way valve. One internal oil port of the two-position three-way valve is connected to the lubrication pump plunger assembly or simultaneously to the lubrication pump plunger assembly and the fuel dispenser pump plunger assembly. The two external oil ports of the two-position three-way valve constitute the two external oil ports.

25. The manual / automatic lubricant dispensing device according to claim 19, characterized in that, An oil pressure switch, pressure sensor, safety valve, or relief valve is installed before the internal oil port of the switching valve.

26. The manual / automatic lubricant dispensing device according to claim 20, characterized in that, The rotating oil pressure plate is also provided with a stirring rod extending along its axial direction. The stirring rod can contact the inner wall of the oil tank to scrape off the lubricant adhering to the inner wall of the oil tank.

27. The manual / automatic lubricant dispensing device according to any one of claims 20-22, characterized in that, The rotating oil pressure plate has symmetrical raised oil pressure plates on both sides. When the rotating oil pressure plate rotates forward and backward, it can squeeze the lubricant by relying on the raised oil pressure plates on the corresponding sides.

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