Oiling machine and operation method thereof

Abstract

The invention discloses an oiling machine and an operation method thereof. The oiling machine comprises a case, a storage battery, an oiling gun, a servo electric cylinder, a grease injection pump body, a grease pipeline and a control unit. The storage battery and the oil gun are both installed outside the machine box, and the servo electric cylinder and the grease injection pump body are both installed inside the machine box. The servo electric cylinder is communicated with the grease injection pump body, and the grease injection pump body is communicated with the oil gun through a grease pipeline; the storage battery is electrically connected with the oil gun, the servo electric cylinder and the control unit. The control unit is electrically connected with the oil gun and the servo electric cylinder. According to the invention, precise quantification of the grease injection amount is realized through parameter presetting and servo electric cylinder control, and the problem of insufficient or excessive grease injection is solved; a rotating motor and a linear motor cooperatively control opening and closing of a grease channel, and grease leakage in the butt joint process is prevented; and a pressure monitoring and alarming system is utilized to automatically give an alarm and control returning during blockage, so that safety protection is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oiling machine, in particular to an oiling machine and an operating method thereof. BACKGROUND

[0002] In the field of mechanical maintenance, regular and quantitative lubrication of moving parts is a key link to ensure long-term stable operation of equipment, reduce wear and energy consumption. At present, the common grease filling method mainly relies on manual operation or simple grease filling equipment. Manual operation usually uses a manual or pneumatic grease gun, and the amount of grease is controlled by the experience of the operator, which has the problems of inaccurate and inconsistent grease injection amount, which may lead to insufficient lubrication of parts or grease overflow and pollution, affecting the performance and cleanliness of the equipment. In addition, manual operation cannot determine in real time whether the grease channel is unobstructed. When the grease nozzle or pipeline is blocked, the abnormal pressure rise cannot be sensed in time, and forced injection may cause seal damage, pipeline rupture or equipment overload, which poses a safety hazard.

[0003] Although some existing oiling equipment has improved the power source, such as using an electric pump or a pneumatic pump to provide pressure, there are still obvious limitations in function. First, the amount of grease injection is mostly dependent on time or experience estimation, and it is difficult to preset and automatically terminate according to the accurate demand of different lubrication points. Second, the grease gun head is usually a simple grease outlet structure and does not have an automatic opening and closing function, which may cause grease dripping and waste when it is connected to and separated from the lubrication point. Third, the existing oiling equipment generally lacks real-time monitoring and intelligent feedback of key parameters during grease injection. When the grease hardens, the pipeline bends or the outlet is blocked, the equipment cannot automatically identify faults, alarm and take protective shutdown, which may continue to press invalidly and cause equipment damage or fault expansion. SUMMARY

[0004] The purpose of the present application is to provide an oiling machine and an operating method thereof, which can accurately and quantitatively, efficiently and stably, and freely move, and is convenient to use, to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: An oiling machine, comprising a machine case, a storage battery, a grease gun, a servo electric cylinder, a grease injection pump body, a grease pipeline and a control unit; The storage battery and the grease gun are both installed outside the machine case, and the servo electric cylinder and the grease injection pump body are both installed inside the machine case; The servo electric cylinder is in communication with the grease injection pump body, and the grease injection pump body is in communication with the grease gun through the grease pipeline; The storage battery is electrically connected with the grease gun, the servo electric cylinder and the control unit; The control unit is electrically connected with the grease gun and the servo electric cylinder.

[0006] As a further scheme of the present application: the oil gun comprises a shell, a rotary motor, a linear motor, a first connecting shaft, a second connecting shaft, a lifting rod, a connecting sleeve, a driving wheel, a driven wheel and a rotary chamber, and the rotary motor, the linear motor, the first connecting shaft, the second connecting shaft, the lifting rod, the connecting sleeve, the driving wheel, the driven wheel and the rotary chamber are all mounted inside the shell. One end of the rotary motor is connected with one end of the first connecting shaft, and the other end of the first connecting shaft is connected with the driving wheel. One end of the linear motor is connected with one end of the second connecting shaft, and the other end of the second connecting shaft is rotatably connected with one end of the lifting rod through the connecting sleeve. The other end of the lifting rod is externally sleeved with the rotary chamber, and the lifting rod is slidingly fitted in the rotary chamber; the rotary chamber is externally sleeved with the driven wheel, and the driven wheel is toothedly fitted with the driving wheel.

[0007] As a further scheme of the present application: the oil gun further comprises a grease passing chamber, a first grease inlet, a second grease inlet, a grease outlet and a rubber nozzle, and the grease passing chamber, the first grease inlet, the second grease inlet and the grease outlet are all mounted inside the shell, and the rubber nozzle is mounted outside the shell. The grease passing chamber is externally sleeved with the rotary chamber, and the rotary chamber is rotatably fitted with the grease passing chamber; the grease passing chamber is provided with the first grease inlet and the grease outlet, and the rotary chamber is provided with the second grease inlet; the first grease inlet and the second grease inlet have two states of coincidence and staggering. The first grease inlet is communicated with the grease injection pump body through a grease pipeline; and the grease outlet is communicated with the rubber nozzle.

[0008] As a further scheme of the present application: an axis is arranged between the driving wheel and the shell and between the rotary chamber and the shell; and a sealing ring is arranged between the lifting rod and the rotary chamber and between the driven wheel and the shell.

[0009] As a further scheme of the present application: the control unit comprises a pressure sensor, a controller, an operation screen, a power switch, an alarm lamp and a pressure indicating lamp; the pressure sensor is communicated with the grease injection pump body; the controller is electrically connected with the pressure sensor, the servo electric cylinder, the rotary motor, the linear motor, the operation screen, the power switch, the alarm lamp and the pressure indicating lamp; and the operation screen, the power switch, the alarm lamp and the pressure indicating lamp are all connected with the case.

[0010] As a further scheme of the present application: the controller comprises: a parameter setting module, configured to input and store grease injection parameters of different specifications through a man-machine interaction interface of the operation screen, and generate a target grease injection amount according to a selected specification; A signal processing module is configured to receive and process pressure signals from the pressure sensor in real time, and drive the pressure indicator to display corresponding pressure states. A logic control module is electrically connected with the parameter setting module and the signal processing module, and is configured to generate control instructions for the servo motor, the rotary motor and the linear motor according to the target grease injection amount and the real-time processed pressure signals. An alarm processing module is electrically connected with the signal processing module, and is configured to determine that the passage is blocked and generate an alarm instruction when the pressure value monitored by the pressure sensor continuously exceeds the preset safety threshold. A drive output module is electrically connected with the logic control module and the alarm processing module, and is configured to convert the control instructions into drive signals and output the drive signals to the servo motor, the rotary motor and the linear motor, and output the alarm instruction to the alarm lamp and the operation screen to perform sound and light alarm prompting.

[0011] As a further scheme of the present application, the oiling machine further comprises a plurality of moving wheels, and the moving wheels are located at the bottom of the machine box and connected with the machine box.

[0012] The present application further provides an operation method of the oiling machine as described in any one of the preceding embodiments, comprising the following steps: S1: starting the power switch, selecting the specifications of the parts to be lubricated or directly setting the target grease injection amount through the human-computer interaction interface of the operation screen, and the parameter setting module of the controller generating corresponding grease injection control parameters accordingly; S2: starting the power switch, and the controller controlling the rotary motor and the linear motor in the oiling gun through the drive output module; the rotary motor drives the rotary chamber to rotate through the driving wheel and the driven wheel, and at the same time, the linear motor drives the lifting rod to move axially upward, so that the second grease inlet on the rotary chamber is in communication with the first grease inlet and the grease outlet on the grease passage chamber, thereby opening the grease passage; S3: the logic control module of the controller generates and outputs control instructions to the servo motor according to the target grease injection amount; the push rod of the servo motor advances according to the preset parameters, and generates air pressure to extrude the grease in the grease injection pump body; the grease in the grease injection pump body is transported through the grease pipeline and in sequence through the first grease inlet, the second grease inlet and the grease outlet to the rubber nozzle; S4: during the grease injection process, the pressure sensor collects the pressure signals of the grease injection passage in real time and transmits the pressure signals to the signal processing module of the controller; the logic control module dynamically adjusts the advancing speed and thrust of the push rod of the servo motor according to the real-time processed pressure data, so as to maintain stable grease injection pressure and flow rate; S5: When the grease injection amount reaches the target grease injection amount, the logic control module instructs the servo motor cylinder to stop advancing; then, the linear motor drives the lifting rod to reset axially downward, and the rotary motor drives the rotary chamber to rotate and reset, so that the second grease inlet is disconnected from the first grease inlet and the grease outlet, thereby closing the grease channel.

[0013] As a further aspect of the present application: in the above S4, if the signal processing module determines that the real-time pressure in the grease channel continuously exceeds the preset safety threshold, the alarm processing module determines that the channel is blocked and generates an alarm instruction; the drive output module controls the servo motor cylinder to stop advancing and execute a rollback, and triggers the alarm lamp and the operation screen to sound and light alarm and display fault information.

[0014] Compared with the prior art, the present application has the following advantages: Through the parameter setting module of the control unit, the target grease injection amount can be preset according to the specifications of the lubrication point, and the servo motor cylinder is controlled to advance accurately, thereby realizing accurate and quantitative grease injection and effectively solving the problems of insufficient or excessive grease injection caused by experience-based estimation; the grease gun is driven to rotate by the rotary motor, and the lifting rod is axially moved by the linear motor, so that the coincidence and alternation of the first grease inlet and the second grease inlet are cooperatively controlled, thereby realizing the opening and closing of the grease channel and fundamentally avoiding the dripping of grease during the docking and disengaging of the grease gun head; the pressure sensor monitors the pressure in the grease channel in real time, the signal processing module and the alarm processing module work cooperatively to determine the blockage when the pressure continuously exceeds the safety threshold and trigger the sound and light alarm, and the drive output module controls the servo motor cylinder to rollback, thereby realizing real-time safety monitoring and active protection during the grease injection process; in addition, the mobile wheels arranged at the bottom of the case make the oiling machine easy to move, and the storage battery provides continuous power, thereby further improving the operation convenience and work efficiency of the oiling machine under actual working conditions.

[0015] Other features and advantages of the present application will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a schematic diagram of the internal structure of the case of the present application; Figure 3 is a schematic diagram of the structure of the grease gun of the present application; Figure 4 is a sectional view of the grease gun of the present application; Figure 5 is a schematic diagram of the internal structure of the case of the present application; Figure 6 is Figure 4 is an enlarged schematic diagram of the structure of part A in Fig. Figure 7 is a schematic block diagram of the present application; Figure 8 is a schematic diagram of the operation of the present application.

[0017] The reference signs in the drawings are as follows: 1, cabinet; 2, battery; 3, oil gun; 301, housing; 302, rotary motor; 303, linear motor; 304, first connecting shaft; 305, second connecting shaft; 306, lifting rod; 307, connecting sleeve; 308, driving wheel; 309, driven wheel; 3010, rotary chamber; 3011, grease chamber; 3012, first grease inlet; 3013, second grease inlet; 3014, grease outlet; 3015, rubber nozzle; 4, servo electric cylinder; 5, grease injection pump body; 6, grease pipeline; 7, control unit; 701, pressure sensor; 702, controller; 702-1, parameter setting module; 702-2, signal processing module; 702-3, logic control module; 702-4, alarm processing module; 702-5, drive output module; 703, operation screen; 704, power switch; 705, alarm lamp; 706, pressure indicator lamp; 8, bearing; 9, sealing ring; 10, moving wheel. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0019] In the embodiments of the present application, an oil gun comprises a cabinet 1, a battery 2, an oil gun 3, a servo electric cylinder 4, a grease injection pump body 5, a grease pipeline 6 and a control unit 7. As shown in Figure 1 and Figure 2 , the battery 2 and the oil gun 3 are both mounted outside the cabinet 1, and the servo electric cylinder 4 and the grease injection pump body 5 are both mounted inside the cabinet 1. The servo electric cylinder 4 is in communication with the grease injection pump body 5, and the grease injection pump body 5 is in communication with the oil gun 3 through the grease pipeline 6. The battery 2 is electrically connected with the oil gun 3, the servo electric cylinder 4 and the control unit 7. The control unit 7 is electrically connected with the oil gun 3 and the servo electric cylinder 4.

[0020] Specifically, the machine case 1 is the main support and protection structure of the whole refueling machine, and an installation space is formed inside the machine case 1. The battery 2 is an independent power source of the whole machine, and is fixedly installed outside the machine case 1, for example, at the side or the rear, so as to facilitate charging or replacement operation. The grease gun 3 is a terminal tool for performing grease injection operation, and is also installed outside the machine case 1, so as to be held or positioned by an operator to a lubrication point.

[0021] The servo motor cylinder 4 and the grease pump body 5 are arranged in the internal space of the machine case 1 and are protected by the shell of the machine case 1. The servo motor cylinder 4 is directly communicated with the grease pump body 5, so that the linear motion of the push rod of the servo motor cylinder 4 can directly act on the grease pump body 5, thereby exerting a controllable pressure on the lubricating grease in the pump body.

[0022] The grease pipeline 6 is used for conveying lubricating grease, one end of the grease pipeline 6 is connected with the outlet of the grease pump body 5, and the other end of the grease pipeline 6 extends to the outside of the machine case 1 and is communicated with the grease inlet of the grease gun 3, thereby forming a grease conveying passage from the grease pump body 5 to the grease outlet nozzle of the grease gun 3.

[0023] The battery 2 is electrically connected with the grease gun 3, the servo motor cylinder 4 and the control unit 7 through an internal wire harness, and provides stable and reliable working power for them.

[0024] The control unit 7 is electrically connected with the grease gun 3, and is used for controlling the on-off of the grease conveying pipeline of the grease gun 3. The control unit 7 is also electrically connected with the servo motor cylinder 4, and is used for accurately controlling the motion speed, stroke and thrust of the push rod of the servo motor cylinder 4, thereby realizing accurate regulation and control of the grease injection pressure and the grease injection amount.

[0025] The refueling machine also comprises a plurality of moving wheels 10, and the plurality of moving wheels 10 are located at the bottom of the machine case 1 and are connected with the machine case 1.

[0026] Specifically, the number of the moving wheels 10 is four, and the moving wheels 10 are arranged near four corner regions of the rectangular contour of the bottom of the machine case 1 and are stably connected with the bottom plate structure of the machine case 1 through wheel shafts, mounting supports or direct integration. The moving wheels 10 can adopt universal wheel structures and are preferably provided with locking devices. Two wheels located at the rear end of the pushing direction can adopt directional wheels, and the other two wheels located at the front end can adopt universal wheels with brake pads. All the moving wheels 10 are connected with mounting seats pre-welded or cast on the bottom of the machine case 1 through wheel frames made of metal or high-strength engineering plastic and by means of bolt fasteners. Such an arrangement enables an operator to easily push the whole refueling machine in a working site, and after positioning, the refueling machine can be stably fixed by means of brake devices to prevent accidental movement during the grease injection operation. The combination of the moving wheels 10 and the battery 2 enables the refueling machine to be freely moved and used immediately, thereby expanding the applicable scenarios and operation convenience of the refueling machine.

[0027] In the embodiment, asFigures 3-6 As shown, the refueling nozzle 3 includes a housing 301, a rotary motor 302, a linear motor 303, a first connecting shaft 304, a second connecting shaft 305, a lifting rod 306, a connecting sleeve 307, a drive wheel 308, a driven wheel 309, a rotating chamber 3010, a grease-clearing chamber 3011, a first grease inlet 3012, a second grease inlet 3013, a grease outlet 3014, and a rubber nozzle 3015. The rotary motor 302, linear motor 303, first connecting shaft 304, second connecting shaft 305, lifting rod 306, connecting sleeve 307, drive wheel 308, driven wheel 309, rotating chamber 3010, grease-clearing chamber 3011, first grease inlet 3012, second grease inlet 3013, and grease outlet 3014 are all installed inside the housing 301; the rubber nozzle 3015 is installed outside the housing 301. The rotating end of the rotary motor 302 is connected to one end of the first connecting shaft 304, and the other end of the first connecting shaft 304 is connected to the drive wheel 308; The telescopic end of the linear motor 303 is connected to one end of the second connecting shaft 305, and the other end of the second connecting shaft 305 is rotatably connected to one end of the lifting rod 306 through the connecting sleeve 307; A rotating chamber 3010 is fitted on the outer side of the other end of the lifting rod 306, and the lifting rod 306 slides within the rotating chamber 3010; a driven wheel 309 is fitted on the outer side of the rotating chamber 3010, and the driven wheel 309 meshes with the driving wheel 308. A grease-passing chamber 3011 is sleeved outside the rotating chamber 3010. The rotating chamber 3010 and the grease-passing chamber 3011 are rotatably engaged. The grease-passing chamber 3011 has a first grease inlet 3012 and a grease outlet 3014. The rotating chamber 3010 has a second grease inlet 3013. The first grease inlet 3012 and the second grease inlet 3013 can be either overlapping or staggered. The first grease inlet 3012 is connected to the grease pump body 5 through the grease pipe 6; the grease outlet 3014 is connected to the rubber nozzle 3015.

[0028] Specifically, the housing 301 is made of high-strength engineering plastic or aluminum alloy. Inside the housing 301, the rotary motor 302 is fixedly mounted on a motor base pre-set inside the housing 301. The output shaft, i.e. the rotating end, of the rotary motor 302 is coaxially connected to one end of the first connecting shaft 304, and a drive wheel 308 is fixedly mounted on the other end of the first connecting shaft 304.

[0029] Linear motor 303 is also fixedly installed inside housing 301. The telescopic end of linear motor 303, i.e., its output rod capable of linear reciprocating motion, is connected to one end of second connecting shaft 305, and the other end of second connecting shaft 305 is connected to one end of a slender lifting rod 306. This connection is not fixed, but is achieved through a connecting sleeve 307, which allows lifting rod 306 to rotate freely relative to second connecting shaft 305, but the two remain axially linked. Lifting rod 306 is rod-shaped, with its other end extending outward.

[0030] A cylindrical rotating chamber 3010 is fitted onto the outer side of the extension of the lifting rod 306. The lifting rod 306 and the inner wall of the rotating chamber 3010 are in a sliding fit, meaning the lifting rod 306 can slide axially within the rotating chamber 3010. A driven wheel 309 is fixedly fitted onto the outer cylindrical surface of the rotating chamber 3010, and its teeth mesh with the teeth of the aforementioned driving wheel 308.

[0031] Furthermore, a fixed grease-passing chamber 3011 is fitted outside the rotating chamber 3010. The grease-passing chamber 3011 is fixed inside the housing 301, and its rotational engagement with the rotating chamber 3010 is achieved through a rotary motor 302, a driving wheel 308, and a driven wheel 309, allowing the rotating chamber 3010 to rotate smoothly within the grease-passing chamber 3011. A first grease inlet 3012 and a grease outlet 3014 are provided on the wall of the grease-passing chamber 3011. Correspondingly, a second grease inlet 3013 is provided on the side wall of the rotating chamber 3010. Through the rotation of the rotating chamber 3010 within the grease-passing chamber 3011, the second grease inlet 3013 on its side wall can either completely overlap or completely offset from the first grease inlet 3012 on the grease-passing chamber 3011 in a circumferential position, thus creating two states: "open" and "closed," for the grease transport passage.

[0032] The first grease inlet 3012 is connected to the grease pump body 5 installed inside the housing 1 via a flexible grease pipe 6, and is used to receive high-pressure grease from the pump body. The grease outlet 3014 extends downward and is connected to the rubber nozzle 3015 installed on the housing 301. The rubber nozzle 3015 is exposed outside the housing 301, and is made of soft, retractable material to prevent the grease gun 3 from damaging the parts to be lubricated during the grease injection process.

[0033] Bearings 8 are provided between the drive wheel 308 and the housing 301, and between the rotating chamber 3010 and the housing 301; sealing rings 9 are provided between the lifting rod 306 and the rotating chamber 3010, and between the driven wheel 309 and the housing 301.

[0034] Specifically, the drive wheel 308 is connected to the rotary motor 302 via the first connecting shaft 304. To reduce friction and ensure transmission accuracy, a rolling bearing 8, such as a deep groove ball bearing 8, is provided between the end of the drive wheel 308 and the housing 301. The end of the drive wheel 308 is tightly fitted with the inner ring of the bearing 8, while the outer ring of the bearing 8 is fixed to the housing 301, thereby enabling the drive wheel 308 and the first connecting shaft 304 assembly to rotate smoothly and centrally, efficiently transmitting power. Similarly, to support the driven wheel 309 and the rotating chamber 3010 fixed thereto, a bearing 8 is also provided on the rotating chamber 3010. Typically, a sliding bearing 8 or a rolling bearing 8 is pressed into the corresponding bearing seat in the housing 301, allowing the entire rotating chamber 3010 assembly to rotate stably and flexibly, and maintaining a stable meshing clearance between the driven wheel 309 and the drive wheel 308.

[0035] To prevent high-pressure grease from leaking through the clearance between the moving parts, an annular groove is formed in the inner wall of the rotating chamber 3010 and an elastic sealing ring 9, such as an O-ring, is installed. Its inner diameter is interference-fitted with the outer surface of the lifting rod 306, effectively preventing grease leakage along the rod surface when the lifting rod 306 slides axially. Simultaneously, a static end-face seal is provided between the end face of the driven wheel 309 and the housing 301. Typically, an annular groove is formed on the contact surface of the housing 301 and an O-ring 9 is placed there. When the driven wheel 309 assembly is installed and tightened, the sealing ring 9 is pressed together, forming an axial sealing barrier to prevent grease from seeping out from the rotating mating end face.

[0036] The above-mentioned bearing 8 and sealing ring 9 not only ensure the precise and low-consumption execution of rotary and linear drive actions, but also ensure the tight sealing of the grease channel, thereby achieving the durability and reliability of the oil gun 3 under long-term high-pressure working environment.

[0037] In this embodiment, the control unit 7 includes a pressure sensor 701, a controller 702, an operation panel 703, a power switch 704, an alarm light 705, and a pressure indicator light 706. The pressure sensor 701 is connected to the grease pump body 5. The controller 702 is electrically connected to the pressure sensor 701, the servo electric cylinder 4, the rotary motor 302, the linear motor 303, the operation panel 703, the power switch 704, the alarm light 705, and the pressure indicator light 706. The operation panel 703, the power switch 704, the alarm light 705, and the pressure indicator light 706 are all connected to the chassis 1.

[0038] Specifically, the pressure sensor 701 is a process monitoring element. Its detection end is directly connected to the grease pump body 5 through an interface, thereby sensing the pressure during the grease delivery process in real time and converting the pressure signal into an electrical signal.

[0039] The analog input channel of the controller 702 is connected to the pressure sensor 701 via a cable to receive the pressure signal transmitted from it. Its digital output channel is connected to the servo electric cylinder 4, the rotary motor 302 inside the fuel nozzle 3, and the linear motor 303 inside the fuel nozzle 3 via drive circuits, respectively, to send precise motion control commands to them. Simultaneously, the controller 702 is also connected to the operation panel 703, the power switch 704, the alarm light 705, and the pressure indicator light 706. The connection to the operation panel 703 enables human-machine interaction; the connection to the power switch 704 is used to sense the start / stop status of the entire machine; and the connections to the alarm light 705 and the pressure indicator light 706 are used to output status indications and alarm signals.

[0040] The operation panel 703, power switch 704, alarm light 705, and pressure indicator light 706, serving as human-machine interface and status indication components, are all directly mounted on the exterior of the chassis 1. The operation panel 703 typically uses a color touchscreen, embedded in an opening on the front panel of the chassis 1, to display grease injection parameters, operating status, and fault information, and to receive touch input from the operator. The power switch 704 is a circular button with a pressure indicator light 706, installed near the operation panel 703, used to control the on / off state of the main power supply. The alarm light 705 is typically a high-brightness audible and visual alarm, installed in a prominent position on the top or front of the chassis 1; when the system detects a blockage or other fault, it will emit a flashing red light and a buzzer sound. The pressure indicator light 706 consists of LEDs that can illuminate in different colors, visually indicating whether the current pressure is normal, too high, or exceeding limits; these are also located on the front panel of the chassis 1.

[0041] In this embodiment, as Figure 7 As shown, the controller 702 includes: The parameter setting module 702-1 is used to input and store different specifications of grease injection parameters through the human-machine interface of the operation screen 703, and generate the target grease injection volume according to the selected specification. The signal processing module 702-2 is used to receive and process the pressure signal from the pressure sensor 701 in real time, and drive the pressure indicator 706 to display the corresponding pressure status. The logic control module 702-3 is electrically connected to the parameter setting module 702-1 and the signal processing module 702-2. It is used to generate control commands for the servo electric cylinder 4, the rotary motor 302 and the linear motor 303 based on the target grease injection amount and the pressure signal processed in real time. The alarm processing module 702-4 is electrically connected to the signal processing module 702-2. It is used to determine that the passage is blocked and generate an alarm command when the pressure value monitored by the pressure sensor 701 continuously exceeds the preset safety threshold. The drive output module 702-5 is electrically connected to the logic control module 702-3 and the alarm processing module 702-4. It is used to convert control commands into drive signals and output them to the servo electric cylinder 4, the rotary motor 302 and the linear motor 303, and to output alarm commands to the alarm light 705 and the operation panel 703 for audible and visual alarm prompts.

[0042] Specifically, the parameter setting module 702-1 drives the operation screen 703 to display a graphical interface that includes model selection and grease injection volume settings. When the operator selects or inputs a lubrication point specification via the touchscreen, the parameter setting module 702-1 retrieves the grease injection parameters pre-bound to that specification from its built-in non-volatile memory, including but not limited to the target grease injection volume and the reference thrust speed of the servo electric cylinder 4, thereby completing the preparation and settings before operation. If it is the first time using it, it needs to be customized. The parameter setting module 702-1 also supports manual input and storage of new parameter combinations.

[0043] Signal processing module 702-2 is responsible for processing the raw analog signal from pressure sensor 701. The continuous electrical signal output by pressure sensor 701 is first converted into a digital quantity by an analog-to-digital converter inside controller 702. Signal processing module 702-2 processes these digital quantities in real time, including filtering to eliminate interference, calculating average values ​​to obtain stable readings, and comparing them with preset pressure ranges. Based on the comparison results, the module drives pressure indicator light 706 through the general-purpose input / output interface of controller 702, for example, using a blue light to indicate normal pressure and a yellow light to indicate high pressure, thus providing the operator with intuitive status indication.

[0044] The logic control module 702-3 simultaneously receives parameters such as the target grease injection volume from the parameter setting module 702-1 and real-time processed pressure data from the signal processing module 702-2 via its internal data bus. The logic control module 702-3 has a pre-set control algorithm that integrates these two sources of information for calculation and judgment. For example, during the grease injection initiation phase, it calculates the theoretical total stroke required by the servo electric cylinder 4 based on the target grease injection volume; during the grease injection process, it dynamically fine-tunes the instantaneous thrust speed of the servo electric cylinder 4 based on the real-time pressure feedback data to achieve constant pressure grease injection. Simultaneously, the logic control module 702-3, according to a pre-set program flow, precisely generates commands at specific moments to the rotary motor 302 and linear motor 303 for controlling the opening and closing of the internal channels and the sequence of actions of the grease gun 3.

[0045] The alarm processing module 702-4 continuously reads the processed pressure data provided by the signal processing module 702-2 and compares it with multiple preset safety thresholds in the program, such as warning thresholds and blockage shutdown thresholds. Once the pressure value exceeds the warning threshold and persists for a settable period of time, typically 2 seconds, the alarm processing module 702-4 will initially determine that the fuel dispenser has entered an abnormal state. If the pressure rises further and continues to exceed a higher blockage shutdown threshold, it will ultimately be determined that the grease passage is blocked, and an alarm flag will be set internally, generating an alarm command containing a specific fault code.

[0046] The drive output module 702-5 receives a comprehensive control command package from the logic control module 702-3, targeting the servo electric cylinder 4, rotary motor 302, and linear motor 303. For the servo electric cylinder 4, the drive output module 702-5 converts the speed and position commands into precise pulse signals or analog voltage signals via a dedicated motion control chip or DA conversion circuit to drive the driver of the servo electric cylinder 4. For the rotary motor 302 and linear motor 303, corresponding start / stop and direction signals are output via digital output ports or relays. Simultaneously, the drive output module 702-5 monitors the status of the alarm processing module 702-4. Upon receiving an alarm command, this module immediately interrupts normal motion control signal output and switches to outputting emergency stop and retraction commands for the servo electric cylinder 4. It also simultaneously triggers the alarm light 705 to flash and sound via the digital output port, and sends a command to the operation screen 703 to display a prominent alarm screen and text prompt.

[0047] In this embodiment, as Figure 8 As shown, the operation method of this fuel dispenser includes: S1: Turn on the power switch 704. Through the human-machine interface of the operation screen 703, select the specifications of the parts to be lubricated or directly set the target grease injection amount. The parameter setting module 702-1 of the controller 702 generates the corresponding grease injection control parameters accordingly. S2: Turn on the power switch 704. The controller 702 coordinates the operation of the rotary motor 302 and linear motor 303 in the oil gun 3 through the drive output module 702-5. The rotary motor 302 drives the rotary chamber 3010 to rotate through the drive wheel 308 and the driven wheel 309. At the same time, the linear motor 303 drives the lifting rod 306 to move upward axially, so that the second grease inlet 3013 on the rotary chamber 3010 is connected to the first grease inlet 3012 and grease outlet 3014 on the grease passage chamber 3011, thereby opening the grease passage. S3: The logic control module 702-3 of the controller 702 generates and outputs control commands to the servo electric cylinder 4 according to the target grease injection amount; the push rod of the servo electric cylinder 4 is advanced according to preset parameters, and the air pressure is generated to squeeze the grease in the grease injection pump body 5; the grease in the grease injection pump body 5 is transported through the grease pipe 6, and is squeezed out through the first grease inlet 3012, the second grease inlet 3013, and the grease outlet 3014 to the rubber nozzle 3015 in sequence; S4: During the grease injection process, the pressure sensor 701 collects the pressure signal of the grease injection channel in real time and transmits it to the signal processing module 702-2 of the controller 702; the logic control module 702-3 dynamically adjusts the pushing speed and thrust of the servo electric cylinder 4 push rod according to the real-time processed pressure data to maintain stable grease injection pressure and flow rate. S5: When the grease injection volume reaches the target grease injection volume, the logic control module 702-3 instructs the servo electric cylinder 4 to stop advancing; subsequently, it controls the linear motor 303 to drive the lifting rod 306 to return to its axial position downwards, and at the same time controls the rotary motor 302 to drive the rotary chamber 3010 to rotate and return to its position, so that the second grease inlet 3013 is disconnected from the first grease inlet 3012 and the grease outlet 3014, thereby closing the grease channel.

[0048] In this embodiment, in S4 above, if the signal processing module 702-2 determines that the real-time pressure in the grease channel continuously exceeds the preset safety threshold, the alarm processing module 702-4 determines that the passage is blocked and generates an alarm command; the drive output module 702-5 controls the servo electric cylinder 4 to stop advancing and perform retraction, and at the same time triggers the alarm light 705 and the operation screen 703 to provide audible and visual alarms and fault information prompts.

[0049] This invention provides a refueling machine and its operating method, which can accurately control the amount of grease injected, and the grease injection process is efficient and stable. In addition, this refueling machine can move freely and is easy to use.

[0050] It should be noted that the parameter setting module 702-1, signal processing module 702-2, logic control module 702-3, alarm processing module 702-4, and drive output module 702-5 of the aforementioned controller 702 are implemented based on a general-purpose microprocessor or programmable logic controller 702, using conventional circuit design and programming techniques in the art. For example, the parameter setting module 702-1 can be implemented by calling a preset data table stored in memory and responding to human-machine interface input; the signal processing module 702-2 can be implemented using an analog-to-digital conversion circuit and a digital filtering algorithm; the logic control module 702-3 can be implemented using pre-programmed timing and conditional judgment logic, such as PID control or sequential control; the alarm processing module 702-4 can be implemented using a threshold comparator and a delay timer; and the drive output module 702-5 can be implemented using digital I / O, DA conversion circuits, or motion control chips. These specific software program writing and hardware circuit construction implementation methods fall within the scope of what those skilled in the art can select and implement based on their common knowledge and the functional descriptions disclosed in this specification, without any creative effort. The present invention seeks protection for the specific technical solution constituted by the collaborative work of these modules and the technical effects thereon, rather than specific software code or the arrangement of a certain circuit component.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A refueling machine, characterized in that, The fuel dispenser includes a chassis (1), a battery (2), a fuel nozzle (3), a servo electric cylinder (4), a grease pump body (5), grease pipes (6), and a control unit (7). The battery (2) and the grease gun (3) are both installed outside the chassis (1), and the servo electric cylinder (4) and the grease pump body (5) are both installed inside the chassis (1). The servo electric cylinder (4) is connected to the grease pump body (5), and the grease pump body (5) is connected to the oil gun (3) through the grease pipe (6); The batteries (2) are all electrically connected to the fuel nozzle (3), the servo electric cylinder (4), and the control unit (7); The control unit (7) is electrically connected to the fuel nozzle (3) and the servo electric cylinder (4).

2. The fuel dispenser according to claim 1, characterized in that, The refueling nozzle (3) includes a housing (301), a rotary motor (302), a linear motor (303), a first connecting shaft (304), a second connecting shaft (305), a lifting rod (306), a connecting sleeve (307), a drive wheel (308), a driven wheel (309), and a rotating chamber (3010). The rotary motor (302), the linear motor (303), the first connecting shaft (304), the second connecting shaft (305), the lifting rod (306), the connecting sleeve (307), the drive wheel (308), the driven wheel (309), and the rotating chamber (3010) are all installed inside the housing (301). The rotating end of the rotary motor (302) is connected to one end of the first connecting shaft (304), and the other end of the first connecting shaft (304) is connected to the drive wheel (308); The telescopic end of the linear motor (303) is connected to one end of the second connecting shaft (305), and the other end of the second connecting shaft (305) is rotatably connected to one end of the lifting rod (306) through a connecting sleeve (307); A rotating chamber (3010) is fitted on the outer side of the other end of the lifting rod (306), and the lifting rod (306) slides in the rotating chamber (3010); a driven wheel (309) is fitted on the outer side of the rotating chamber (3010), and the driven wheel (309) meshes with the driving wheel (308).

3. The fuel dispenser according to claim 2, characterized in that, The refueling nozzle (3) further includes a grease-clearing chamber (3011), a first grease inlet (3012), a second grease inlet (3013), a grease outlet (3014), and a rubber nozzle (3015). The grease-clearing chamber (3011), the first grease inlet (3012), the second grease inlet (3013), and the grease outlet (3014) are all installed inside the housing (301), and the rubber nozzle (3015) is installed outside the housing (301). The rotating chamber (3010) is externally fitted with a grease-through chamber (3011). The rotating chamber (3010) and the grease-through chamber (3011) are rotatably connected. The grease-through chamber (3011) has a first grease inlet (3012) and a grease outlet (3014). The rotating chamber (3010) has a second grease inlet (3013). The first grease inlet (3012) and the second grease inlet (3013) can be either overlapping or staggered. The first grease inlet (3012) is connected to the grease pump body (5) through the grease pipe (6); the grease outlet (3014) is connected to the rubber nozzle (3015).

4. The fuel dispenser according to claim 2, characterized in that, Bearings (8) are provided between the drive wheel (308) and the housing (301) and between the rotating chamber (3010) and the housing (301); sealing rings (9) are provided between the lifting rod (306) and the rotating chamber (3010) and between the driven wheel (309) and the housing (301).

5. The fuel dispenser according to claim 3, characterized in that, The control unit (7) includes a pressure sensor (701), a controller (702), an operation panel (703), a power switch (704), an alarm light (705), and a pressure indicator light (706). The pressure sensor (701) is connected to the grease pump body (5). The controller (702) is electrically connected to the pressure sensor (701), the servo electric cylinder (4), the rotary motor (302), the linear motor (303), the operation panel (703), the power switch (704), the alarm light (705), and the pressure indicator light (706). The operation panel (703), the power switch (704), the alarm light (705), and the pressure indicator light (706) are all connected to the chassis (1).

6. The fuel dispenser according to claim 5, characterized in that, The controller (702) includes: The parameter setting module (702-1) is used to input and store different specifications of grease injection parameters through the human-computer interaction interface of the operation screen (703), and generate the target grease injection volume according to the selected specification; The signal processing module (702-2) is used to receive and process the pressure signal from the pressure sensor (701) in real time, and drive the pressure indicator (706) to display the corresponding pressure status; The logic control module (702-3) is electrically connected to the parameter setting module (702-1) and the signal processing module (702-2), and is used to generate control commands for the servo electric cylinder (4), rotary motor (302) and linear motor (303) based on the target grease injection amount and the pressure signal processed in real time. The alarm processing module (702-4) is electrically connected to the signal processing module (702-2) and is used to determine that the passage is blocked and generate an alarm command when the pressure value monitored by the pressure sensor (701) continues to exceed the preset safety threshold. The drive output module (702-5) is electrically connected to the logic control module (702-3) and the alarm processing module (702-4), and is used to convert the control command into a drive signal and output it to the servo electric cylinder (4), the rotary motor (302) and the linear motor (303), and output the alarm command to the alarm light (705) and the operation panel (703) for audible and visual alarm prompts.

7. The fuel dispenser according to claim 6, characterized in that, The refueling machine also includes several casters (10), which are located at the bottom of the casing (1) and connected to the casing (1).

8. A method for operating a fuel dispenser as described in any one of claims 17, characterized in that, Including the following steps: S1: Turn on the power switch (704), select the specifications of the part to be lubricated or directly set the target grease injection amount through the human-machine interface of the operation screen (703), and the parameter setting module (702-1) of the controller (702) generates the corresponding grease injection control parameters accordingly. S2: The controller (702) coordinates the operation of the rotary motor (302) and linear motor (303) in the oil gun (3) through the drive output module (702-5); the rotary motor (302) drives the rotating chamber (3010) to rotate through the drive wheel (308) and driven wheel (309), while the linear motor (303) drives the lifting rod (306) to move upward axially, so that the second grease inlet (3013) on the rotating chamber (3010) is connected to the first grease inlet (3012) and grease outlet (3014) on the grease passage chamber (3011), thereby opening the grease passage; S3: The logic control module (702-3) of the controller (702) generates and outputs control commands to the servo electric cylinder (4) according to the target grease injection amount; the push rod of the servo electric cylinder (4) is advanced according to preset parameters, and the grease in the grease pump body (5) is squeezed by generating air pressure; the grease in the grease pump body (5) is transported through the grease pipe (6) and sequentially squeezed out through the first grease inlet (3012), the second grease inlet (3013), and the grease outlet (3014) to the rubber nozzle (3015); S4: During the grease injection process, the pressure sensor (701) collects the pressure signal of the grease injection channel in real time and transmits it to the signal processing module (702-2) of the controller (702); the logic control module (702-3) dynamically adjusts the pushing speed and thrust of the servo electric cylinder (4) push rod according to the real-time processed pressure data in order to maintain stable grease injection pressure and flow rate; S5: When the amount of grease injected reaches the target amount of grease injected, the logic control module (702-3) instructs the servo electric cylinder (4) to stop advancing; then, it controls the linear motor (303) to drive the lifting rod (306) to return to its axial position downward, and at the same time controls the rotary motor (302) to drive the rotating chamber (3010) to rotate and return to its position, so that the second grease inlet (3013) is disconnected from the first grease inlet (3012) and the grease outlet (3014), thereby closing the grease channel.

9. The method for operating a fuel dispenser according to claim 8, characterized in that, In S4 above, if the signal processing module (702-2) determines that the real-time pressure in the grease channel continuously exceeds the preset safety threshold, the alarm processing module (702-4) determines that the passage is blocked and generates an alarm command; the drive output module (702-5) controls the servo electric cylinder (4) to stop advancing and perform retraction, and at the same time triggers the alarm light (705) and the operation screen (703) to provide audible and visual alarms and fault information prompts.

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