Oil filling device

Abstract

The utility model discloses an oil liquid filling device, relates to the field of oil liquid filling, and aims to solve the problems that in the prior art, transferring is inconvenient, filtering process monitoring is lacked, quantitative filling cannot be achieved, the filling pressure and the filling flow speed cannot be adjusted, the intelligent degree is low, and the safety coefficient is low. A pollution indicator is installed on the filter, a particle counter is installed at the rear end of the filter, a flow meter, a pressure sensor and a throttling valve are installed on an oil filling pipeline, intelligent control is conducted through a PLC, and anti-explosion electrical parts are used. The motor is mounted on the chassis assembly to provide movement assistance; filtering materials and filtered oil are monitored through the pollution indicator and the particle counter, the filtering efficiency and the filtering effect are ensured, the detection instrument is installed on the oil filling pipeline, intelligent control is conducted through the PLC, quantitative filling and adjustable filling process are achieved, and safety is improved by using anti-explosion electrical parts.

Description

Technical Field

[0001] The utility model relates to the technical field of oil filling, in particular to a filling device for hydraulic oil and lubricating oil. Background Art

[0002] When it is necessary to add hydraulic oil and lubricating oil to the hydraulic system and the lubricating oil system, the oil tank and the refueling device need to be moved to the side of the hydraulic system and the lubricating oil system. In the prior art, a flatbed truck is used to transport the oil tank, but since the overall weight of the oil tank is large after being loaded with oil, manually dragging the flatbed truck not only consumes a lot of manpower, but also has a slow speed, which is not conducive to improving maintenance efficiency; in the existing oil filling process, although a filtering device is provided, there is a lack of monitoring of the filtered oil and the blockage of the filter element, which is not conducive to controlling the oil quality; the existing mobile hydraulic oil and lubricating oil filling device uses manual control of the filling amount, which has a large error, and the pressure and flow rate of the oil cannot be adjusted during the filling process, the degree of intelligence is low, and it is not easy to use. The parameter detection instrument of the filling process lacks explosion-proof function and has a low safety factor. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a self-propelled oil filling device. The device establishes an intelligent control system with PLC as the core, integrates PLC control, touch screen operation, quantitative control of refueling quantity, temperature control and other special functions, and has a high degree of intelligence; quantitative refueling is achieved through a gear pump, the pressure is adjustable, the oil flow rate is controllable, the refueling can be automatically controlled, and a buzzer can be sounded to indicate the completion of the oil filling after the filling is completed, and has an overpressure and overload protection function; the filtration adopts double-stage filtration with high filtration accuracy; it has the functions of autonomous driving and autonomous explosion-proof, and can effectively solve the problems in the background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model discloses an oil filling device, which adopts the technical scheme of comprising a chassis assembly, wherein a vehicle body assembly is mounted on the chassis assembly, and a moving wheel is mounted below the chassis assembly, and an oil filling system is mounted in the vehicle body assembly, and a motor and an electrical control system are also mounted in the vehicle body assembly, wherein the motor is connected to a reducer, and the moving wheel further comprises a driving wheel and a guide wheel, wherein the driving wheel is mounted on the chassis assembly and is connected to the reducer, and the motor drives the driving wheel to rotate after being decelerated by the reducer, so as to achieve a power-assisting effect, wherein a guide rod is connected to an upper shaft of the chassis assembly and a battery pack is mounted thereon, wherein a handle is connected to the upper end of the guide rod, and the guide wheel is connected to the lower end thereof, and the guide wheel can be controlled by controlling the guide rod, thereby controlling the forward direction; the oil filling system further comprises a fuel tank and an oil delivery system The invention relates to a pump, a spring reel is installed on the body component, a refueling pipe is installed on the spring reel, one end of the oil pump is connected to the fuel tank, and the other end is connected to the refueling pipe. When not in use, the refueling pipe can be reeled up by the spring reel. The oil filling system is equipped with a filter, a particle counter and a flow meter. The particle counter can monitor the oil, and the flow meter can detect the delivery volume. The electrical control system has a PLC controller and a speed regulator. The speed regulator can adjust the motor speed to adjust the travel speed. The body component is equipped with an operation panel, and a buzzer is installed on the operation panel. The PLC controller and the battery pack, the operation panel, the speed regulator, the oil pump, the particle counter, the flow meter and the buzzer are electrically connected, and the speed regulator and the motor are electrically connected.

[0005] As a preferred technical solution of the utility model, in the oil filling system, the oil delivery pump is a gear pump, whose inlet end is connected to the oil tank and the outlet end is connected to the filter. There are two groups of filters, which are connected in series to form secondary filtration. The filter is equipped with a pollution indicator. The PLC controller and the pollution indicator are electrically connected. The clogging condition of the filter element can be monitored through the pollution indicator. When the set clogging value is reached, a buzzer alarm can be triggered.

[0006] As a preferred technical solution of the utility model, the oil filling system is provided with a safety valve and a reflux pipe, the particle counter, the safety valve and the reflux pipe are connected in parallel, a first throttling check valve is also connected in series at the rear end of the particle counter, a normally open solenoid valve is installed on the reflux pipe, and the first throttling check valve and the normally open solenoid valve are both electrically connected to the PLC controller.

[0007] As a preferred technical solution of the utility model, an oil outlet pipeline is also connected in parallel to the front end of the normally open solenoid valve of the return pipe, and the oil outlet pipeline is sequentially connected to a normally closed solenoid valve, a second throttling check valve, a pressure sensor, a flow meter and a spring reel, and a hose and an oil supply connector are connected to the spring reel, and the normally closed solenoid valve, the second throttling check valve, the pressure sensor, the flow meter and the PLC controller are electrically connected.

[0008] As a preferred technical solution of the utility model, the motor, the electrical control system and internal components, and the components contained in the oil filling system are all explosion-proof electrical equipment.

[0009] Compared with the prior art, the utility model has the following beneficial effects: the utility model forms an active axle-driven chassis by installing a motor on the chassis assembly, and the active axle-driven chassis drives the transfer, so that the movement of the filling device can be more convenient; by setting a particle counter for oil monitoring, the particle size of the filtered oil can be detected to ensure the filtering effect, and the pollution indicator installed on the filter can detect blockage to ensure the filtering efficiency.

[0010] Furthermore, by installing a spring reel and using the spring reel to reel up the fuel filler pipe, the fuel filler pipe can be stored when not in use and pulled out when in use, making it more convenient to use and easier to store.

[0011] Furthermore, by installing a flow meter, a pressure gauge and a throttling check valve on the pipeline and performing intelligent control through a PLC controller, quantitative filling of oil can be achieved, and the pressure and flow rate of the filling process can be adjusted as needed, making it more convenient to use.

[0012] Furthermore, the use of explosion-proof electrical equipment improves safety during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the partial internal structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the oil filling system of the utility model.

[0016] In the figure: 1. chassis assembly; 101. guide rod; 2. body assembly; 3. battery pack; 4. driving wheel; 5. motor; 6. electrical control system; 7. operation panel; 8. hydraulic oil filling system; 9. lubricating oil filling system; 10. oil connection port; 11. spring reel; 12. oil tank; 13. gear pump; 14. filter; 15. particle counter; 16. first throttling check valve; 17. safety valve; 18. normally open solenoid valve; 19. normally closed solenoid valve; 20. second throttling check valve; 21. hose; 22. oil supply connector; 23. flow meter. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0018] like Figures 1 to 3 As shown, the utility model discloses an oil filling device, which adopts the technical solution of comprising a chassis assembly 1, a driving wheel 4 and a battery pack 3 are mounted below the chassis assembly 1, a guide rod 101 is connected to the end shaft thereof, a handle and a traction ring are arranged at the upper end of the guide rod 101, and a guide wheel is arranged at the lower end, and there are two driving wheels 4 which are triangularly distributed with the guide wheels.

[0019] The chassis assembly 1 is fixed with a body assembly 2 by bolt connection. In order to provide assistance for the movement of the chassis assembly 1, a motor 5 is installed in the body assembly 2. The output end of the motor 5 is connected to the reducer and then connected to the drive wheel 4. In order to control the operation of the motor 5, an electrical control system 6 is installed in the body assembly 2. The electrical control system 6 has a PLC controller and a speed regulator. The PLC controller is electrically connected to the speed regulator, and the speed regulator is electrically connected to the motor 5. The body assembly 2 is also equipped with an operation panel 7. The PLC controller is electrically connected to the operation panel 7 and the battery pack 3. The battery pack 3 supplies power. The staff can control the operation, stop and running speed of the motor 5 by operating the operation panel 7. In order to provide safety protection during the travel process, an emergency brake button is installed on the chassis assembly 1. The emergency brake button is connected to the PLC controller. After pressing, the motor 5 can be shut down urgently. At the same time, during the operation process, the sound and light alarm is turned on to remind the surrounding people to pay attention to the safety of the vehicle.

[0020] The operation panel 7 is integrated on the door of the electrical control cabinet and is equipped with components such as a touch screen, a power switch, a buzzer, an emergency stop knob, and an operation indicator. The buzzer is used for sound and light alarms, and the touch screen is used for display, control, recording and query of front-end data, and analyzes and displays it in the form of curves, with high stability and strong timeliness.

[0021] The vehicle body component 2 is provided with a charging interface for charging the battery pack 3 .

[0022] In order to add hydraulic oil and lubricating oil to the hydraulic system and the lubricating oil system, a hydraulic oil filling system 8 and a lubricating oil filling system 9 are also provided in the vehicle body assembly 2. The two have the same structure but convey different oils. Taking the hydraulic oil filling system 8 as an example, the composition of the filling system is described as follows:

[0023] like Figure 3 As shown, it includes an oil tank 12 and a gear pump 13. The oil tank 12 temporarily stores the oil to be filled. The inlet end of the gear pump 13 is connected to the oil tank 12 through a pipeline, and the outlet end is connected to the filter 14 through a pipeline. There are two filters 14, which are arranged in series to form a two-stage filtration. In order to monitor the blockage degree of the filter element of the filter 14, a pollution indicator is installed on the filter 14, and the pollution indicator is electrically connected to the PLC controller. In order to reduce the operating noise, the pump assembly is fixed with shock-absorbing bolts.

[0024] In order to monitor the cleanliness of the oil after being filtered by the filter 14, a particle counter 15 is connected to the rear end of the filter 14. The particle counter 15 is electrically connected to the PLC controller so as to be able to give an alarm in time when the pollution indicator and the particle counter 15 are detected to be abnormal.

[0025] In order to ensure the safety of the oil circuit, a safety valve 17 is also installed on the hydraulic oil filling system 8 , and the safety valve 17 is connected in parallel with the particle counter 15 .

[0026] Considering that only part of the oil needs to pass through the particle counter 15 for sampling detection, a return line is also provided in parallel with the particle counter 15 to maintain the smooth flow of the oil circuit, and the return line is connected to the oil tank 12. In order to prevent the oil from flowing back and to facilitate the adjustment of the sampling volume, a first throttling check valve 16 is installed at the rear end of the particle counter 15.

[0027] In order to output the oil to the outside, the return line is connected in parallel with the oil outlet line. On the return line, a normally open solenoid valve 18 is installed at the rear end of the parallel point with the oil outlet line to maintain the pipeline open. A normally closed solenoid valve 19 is installed on the outlet line to control the oil output. Both the normally open solenoid valve 18 and the normally closed solenoid valve 19 are electrically connected to the PLC controller.

[0028] In order to prevent oil backflow, a second throttling check valve 20 is installed at the rear end of the normally closed solenoid valve 19 in the oil outlet pipeline. In order to monitor the hydraulic pressure of the oil delivery, a pressure sensor is connected to the rear end of the second throttling check valve 20. In order to monitor the oil delivery volume, a flow meter 23 is connected to the rear end of the pressure sensor.

[0029] In order to facilitate the storage of the refueling pipe, an oil receiving port 10 is provided on the vehicle body component 2, and a spring reel 11 is provided in the oil receiving port 10. The refueling pipe is wound around the spring reel 11. The refueling pipe is a hose 21, and a fuel supply connector 22 is connected to the end of the pipe body.

[0030] In order to facilitate safety and maintenance of the oil filling system, double doors are installed on both sides of the body component 2.

[0031] The working principle of this utility model:

[0032] When it is necessary to add hydraulic oil or lubricating oil to the hydraulic system and the lubricating oil system, one staff member operates the operation panel 7 to control the operation of the motor 5, and the other staff member holds the guide rod 101 to guide the forward direction, moves the filling device to the hydraulic system and the lubricating oil system to be filled, opens the oil receiving port 10, holds the hose 21 and pulls it out, the hose 21 drives the spring reel 11 to rotate, and at the same time the spring accumulates force to connect the oil supply connector 22 with the oil receiving port of the hydraulic system and the lubricating oil system. The staff operates the operation panel 7 to start the filling program, and the PLC controller controls the gear pump 13 to run, and the oil is pumped out from the oil tank 12. After being filtered by the filter 14, part of the oil passes through the particle counter 15 to detect the cleanliness, and the other part passes through the normally open solenoid valve 18 and the return line to the oil tank 12 to remove the air in the pipeline. The oil flowing through the particle counter 15 passes through the first throttling check valve 16 and enters the pipeline where the safety valve 17 is located, and finally returns to the oil tank 12. The opening of the first throttling check valve 16 can adjust the flow of the detection pipeline where the particle counter 15 is located. When the PLC controller receives the detection data of the pollution indicator on the filter 14 and the particle counter 15, it compares them with the set parameters. If it is within the safe range, it continues to run. If it exceeds the safe range, the buzzer alarm is triggered.

[0033] After the set running time, it is considered that the air in the pipeline is exhausted, the normally open solenoid valve 18 is closed, the normally closed solenoid valve 19 is opened, and the oil enters the oil outlet pipeline, passes through the second throttling check valve 20, the pressure sensor, and the flow meter 23, and enters the hose 21 in the spring reel 11, and finally enters the hydraulic system and the lubricating oil system through the oil supply joint 22. The PLC controller detects the liquid pressure of the oil outlet pipeline through the pressure sensor and the oil delivery through the flow meter 23. When the set oil delivery is reached, the normally open solenoid valve 18 is opened, the normally closed solenoid valve 19 is closed, and the filling is finished.

[0034] Electrical control principle

[0035] The electrical control system has the function of self-diagnosis of faults. According to the type of fault information, it will alarm through text and indicator light color changes and buzzing sounds on the operation interface, forming a comprehensive monitoring and protection for the system to ensure the safety of the system, equipment and personnel.

[0036] a) Touch screen control principle

[0037] The operating parameters are set through the touch screen, and the signals are collected and calculated by PLC to realize automatic control. The touch screen control system can also centrally manage and control the collected data, and can also set and modify parameters according to the actual operating conditions to change the control process.

[0038] b) Motor starting and protection principle

[0039] The power source motor is started by directly connecting the power supply to the contactor, and the thermal overload relay protects the motor from overload. When the oil pump motor is overloaded, the thermal overload relay operates, controls the AC contactor to disconnect, and generates an alarm signal.

[0040] The circuit breaker protects the main circuit of the motor from short circuit, leakage and ground fault. The thermal overload relay provides overload delay protection and phase loss protection for the motor. The AC contactor has undervoltage protection function.

[0041] c) Data collection principle

[0042] Data acquisition is carried out through PLC, which combines software and hardware, has strong anti-drying performance and good smoothness. The PLC module is responsible for the collection of all parameters. In order to ensure the anti-interference of the data acquisition system, all sensor signals use standard current signals. The signals are transmitted to the electrical cabinet, converted by hardware filtering of the signal isolator, connected to the PLC, filtered by software, and finally output to the touch screen for display.

[0043] d) Quantitative filling control principle

[0044] Set the target value to be controlled on the touch screen, and then start the system. The flow meter starts working and sends out a flow signal. The PLC analyzes and calculates the flow in the unit and keeps accumulating the cumulative flow of filling. When the cumulative flow reaches the set target value, the PLC sends a command to change the opening and closing state of the solenoid valve, and then immediately stops the pump, the system stops running, and the filling is completed.

[0045] The circuits and mechanical connections involved in the utility model are conventional means used by those skilled in the art, and technical inspiration can be obtained through limited experiments, which are common knowledge. The particle counter and pollution indicator used in the utility model are products available on the market and belong to the prior art.

[0046] Components not described in detail herein are prior art.

[0047] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil filling device, comprising a chassis assembly (1), a vehicle body assembly (2) mounted on the chassis assembly (1), and movable wheels mounted below the chassis assembly (1), an oil filling system mounted inside the vehicle body assembly (2), characterized in that: The vehicle body component (2) is also equipped with a motor (5) and an electrical control system (6). The motor (5) is connected to a reducer. The moving wheel also includes a driving wheel (4) and a guide wheel. The driving wheel (4) is mounted on the chassis component (1) and is connected to the reducer. The upper shaft of the chassis component (1) is connected to a guide rod (101) and is equipped with a battery pack (3). The upper end of the guide rod (101) is connected to a handle and the lower end is connected to the guide wheel. The oil filling system also includes an oil tank (12) and an oil pump. The vehicle body component (2) is equipped with a spring reel (11). A refueling pipe is wound around the spring reel (11). One end of the oil pump is connected to the oil tank (12), and the other end is connected to the refueling pipe. The oil filling system is equipped with a filter (14), a particle counter (15) and a flow meter (23). The electrical control system (6) has a PLC controller and a speed regulator. The vehicle body component (2) is equipped with an operation panel (7). The operation panel (7) is equipped with a buzzer. The PLC controller and the battery pack (3), the operation panel (7), the speed regulator, the oil pump, the particle counter (15), the flow meter (23) and the buzzer are electrically connected. The speed regulator and the motor (5) are electrically connected.

2. The oil filling device according to claim 1, characterized in that: In the oil filling system, the oil delivery pump is a gear pump (13), the inlet end of which is connected to the oil tank (12), and the outlet end of which is connected to the filter (14); a contamination indicator is mounted on the filter (14), and the PLC controller and the contamination indicator are electrically connected.

3. The oil filling device according to claim 2, characterized in that: The oil filling system is provided with a safety valve (17) and a return pipe; the particle counter (15), the safety valve (17) and the return pipe are connected in parallel; a first throttling check valve (16) is also connected in series at the rear end of the particle counter (15); a normally open solenoid valve (18) is installed on the return pipe; the first throttling check valve (16) and the normally open solenoid valve (18) are both electrically connected to the PLC controller.

4. The oil filling device according to claim 3, characterized in that: An oil outlet pipeline is also connected in parallel to the front end of the normally open solenoid valve (18) of the return pipeline, and the oil outlet pipeline is connected in sequence to a normally closed solenoid valve (19), a second throttling check valve (20), a pressure sensor, a flow meter (23) and a refueling pipe. The refueling pipe also includes a hose (21) and an oil supply connector (22). The normally closed solenoid valve (19), the second throttling check valve (20), the pressure sensor, the flow meter (23) and the PLC controller are electrically connected.

5. The oil filling device according to claim 4, characterized in that: The motor (5), the electrical control system (6) and internal components, and the components contained in the oil filling system are all explosion-proof electrical equipment.

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