A multi-station automatic barrel changing function electric lubricating pump device

Abstract

The application discloses a multi-station automatic barrel changing function electric lubricating pump device, which comprises a grease barrel, an electric lifting type lubricating pump and a direct current push rod motor arranged in a protection cabinet, the electric lifting type lubricating pump is arranged on the grease barrel, the electric lifting type lubricating pump is connected with the direct current push rod motor A, the bottom of the direct current push rod motor A is arranged on an outer tooth rotary support turntable bearing, an angle sensor is arranged in the middle of the outer tooth rotary support turntable bearing, the outer tooth rotary support turntable bearing is meshed with a pinion gear, and the pinion gear is connected with a direct current speed reducer. The structure is compact; the barrel changing work is fully automatic, the automatic operation time of the lubricating pump device is increased by several times, the number of matched stations can be selected according to the oil consumption demand of the lubricating system, the cost is low, the reliability is good, the safety is good, the empty oil barrel is always in a sealed state, and aging of the lubricating grease caused by long-term contact with air and pollution of the environment caused by volatilization of base oil in the lubricating grease are avoided.

Description

Technical Field

[0001] This invention relates to the field of automated replacement, and in particular to an electric lubrication pump device with multi-station automatic drum changing function. Background Technology

[0002] Currently, many large-scale equipment are becoming increasingly automated, achieving unmanned and automatic operation. This is especially true in modern unmanned docks, where various bridge cranes and rail-mounted gantry cranes operate automatically, typically requiring maintenance only every three to four months. This necessitates that the corresponding lubrication equipment also adapt to this continuous operating condition. Due to space constraints and ease of transport, such equipment generally uses standard 17-20 liter drums of grease. If a lubrication system has many lubrication points or consumes a large amount of grease, a single drum of grease has a limited lifespan. This necessitates that staff temporarily stop the equipment during normal operation to replace the grease drum, increasing workload and disrupting normal production schedules.

[0003] Patent application CN201152242Y discloses a single-line electric lubrication pump, including a pump unit, an oil storage tank, an oil filler filter, minimum and maximum oil level signal devices, and an automatic oil supply controller. The pump unit, consisting of an oil pump and a motor, is located above the oil storage tank. The pump is placed inside the tank, while the motor is placed outside. The pump outlet is connected to a pipeline and is located on the side of the tank. The oil filler filter is located outside the tank, with its inlet connected to a quick-change connector and its outlet entering the oil storage tank. The automatic oil supply controller is located on top of the oil storage tank. The minimum and maximum oil level signal devices are located inside the oil storage tank, with their leads and motor connections passing through a sealed pipeline from the bottom of the automatic controller out of the tank and connecting to the automatic oil supply controller internally. However, the equipment needs to be paused when changing the grease tank, resulting in low operational efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an electric lubrication pump device with a multi-station automatic drum changing function that makes full use of the available space inside the protective cabinet while taking into account the convenience and safety of pump station operation and maintenance.

[0005] The technical solution adopted in this invention is:

[0006] An electric lubrication pump device with multi-station automatic drum changing function includes a grease drum, an electric lifting lubrication pump, and a DC push rod motor, all housed in a protective cabinet. The electric lifting lubrication pump is mounted on the grease drum and connected to the DC push rod motor A. The bottom of the DC push rod motor A is mounted on an external gear slewing bearing. An angle sensor is located in the middle of the external gear slewing bearing. The external gear slewing bearing meshes with a pinion gear, and a DC geared motor is connected to the pinion gear.

[0007] Furthermore, three grease drums are installed inside the protective cabinet around DC push rod motor A. DC push rod motors B, C, and D are installed on the inside side of the protective cabinet, which are respectively connected to oil drum protective cover I, oil drum protective cover II, and oil drum protective cover III. Oil drum protective cover I, oil drum protective cover II, and oil drum protective cover III are matched with the three grease drums respectively.

[0008] Furthermore, the outer ring of the external gear slewing bearing is mounted on the bottom plate of the protective cabinet, and the inner ring is fixed to the base of the electric lifting lubrication pump. The electric lifting lubrication pump rotates around the external gear slewing bearing.

[0009] Furthermore, the angle sensor is fixed on the bottom plate of the protective cabinet, and its output shaft is connected to the base of the electric lifting lubrication pump, which can provide real-time feedback on the angle at which the electric lifting lubrication pump is rotating.

[0010] Furthermore, the DC geared motor is fixed to the column of the electric lifting lubrication pump, and a pinion is installed on the output shaft of the DC geared motor. The pinion meshes with the outer gear ring of the external gear slewing bearing. Therefore, when the DC geared motor is powered on and rotates, it can drive the electric lifting lubrication pump to rotate.

[0011] Furthermore, a low oil level switch is installed on the pump cover of the electric lifting lubrication pump to detect the oil level in the oil tank and send a signal when the oil level reaches a low level.

[0012] Furthermore, the electric lifting lubrication pump is connected to an oil outlet hose, and the other end of the oil outlet hose is connected to a rotary joint. The rotary joint is connected to an oil outlet connector on the protective cabinet. The rotary joint 12 ensures that the hose 10 remains in a normal state when the electric lifting lubrication pump 2 rotates, and will not twist into a spiral shape.

[0013] Furthermore, an electrical control box is installed on the inner wall of the protective cabinet, and a small door with a transparent observation window is set at the corresponding position on the protective cabinet.

[0014] The beneficial effects of this invention are: 1. All components are housed in a sealed protective cabinet, making it suitable for outdoor work and featuring a compact structure;

[0015] 2. The drum changing operation is fully automatic, which increases the automatic operation time of the lubrication pump device several times over;

[0016] 3. The number of workstations can be selected according to the oil consumption requirements of the lubrication system;

[0017] 4. It adopts mature and reliable DC linear actuator motors as the pushing element, and all of them have positioning signal feedback, which is low in cost and high in reliability;

[0018] 5. The operation process is fully controlled by the PLC control box, and corresponding interlocks are set to avoid damage to the device caused by various malfunctions or misoperations, ensuring good safety.

[0019] 6. The automatic oil drum protective cover keeps the spare oil drum and the empty oil drum with residual grease in a sealed state, preventing the grease from aging due to long-term exposure to air and the evaporation of the base oil in the grease, which pollutes the environment. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 This is a structural diagram of the three grease containers of the present invention;

[0024] Figure 4 This is a structural diagram of the four grease containers of the present invention.

[0025] The components include: 1. Protective cabinet; 2. Electric lifting lubrication pump; 3. DC push rod motor A; 4. External gear slewing bearing turntable bearing; 5. Angle sensor; 6. DC geared motor; 7. Pinion; 8. DC push rod motor B; 9. Oil drum protective cover I; 10. Oil outlet hose; 11. Oil outlet connector; 12. Rotary joint; 13. Electrical control box; 14. Oil drum protective cover II; 15. DC push rod motor C; 16. DC push rod motor D; 17. Oil drum protective cover III; 18. Low oil level switch; 19. Grease drum; 20. Small door. Detailed Implementation

[0026] like Figure 1-4As shown, an electric lubrication pump device with multi-station automatic drum changing function includes a grease tank 19, an electric lifting lubrication pump, and a DC push rod motor, all housed in a protective cabinet 1. The electric lifting lubrication pump 2 is mounted on the grease tank 19 and connected to the DC push rod motor A3. The bottom of the DC push rod motor A3 is mounted on an external gear slewing bearing 4. The three grease tanks 19 are connected to a pinion 7 on the outside of the external gear slewing bearing 4, and a DC geared motor 6 is connected to the pinion 7. The DC push rod motor A3 is installed inside the column of the electric lifting lubrication pump 2, allowing the pump to be raised or lowered. This DC push rod motor has position feedback; when the DC push rod motor is raised to its maximum position, a raised position switch is activated, indicating the lubrication pump is at its highest position. When the DC push rod motor is fully retracted, a retracted position switch is activated, indicating the lubrication pump is at its lowest position and in the working position. All components of the device are housed in a sealed protective cabinet 1, making it suitable for outdoor operation and featuring a compact structure. The drum changing operation is fully automatic, significantly increasing the automatic operation time of the lubrication pump. The number of workstations can be selected according to the oil consumption requirements of the lubrication system. It uses mature and reliable DC push rod motors as the pushing elements, all of which have positioning feedback signals, resulting in low cost and high reliability. The operation process is fully controlled by a PLC control box, with corresponding interlocks to prevent damage to the device from various malfunctions or misoperations, ensuring high safety.

[0027] Inside the protective cabinet 1, three grease tanks 19 are installed around a DC actuator motor A3. DC actuator motors B8, C15, and D16 are located on the inner side of the cabinet 1, respectively connected to grease tank protective covers I9, II14, and III17. Each of these covers is matched to one of the three grease tanks 19. The automatic grease tank protective covers ensure that the spare grease tank and the empty grease tank with residual grease remain sealed, preventing the grease from aging due to prolonged exposure to air and the evaporation of the base oil in the grease, thus avoiding environmental pollution.

[0028] The outer ring of the external gear slewing bearing 4 is mounted on the bottom plate of the protective cabinet 1, and the inner ring is fixed to the base of the electric lifting lubrication pump 2. The electric lifting lubrication pump 2 rotates around the external gear slewing bearing 4.

[0029] Angle sensor 5 is fixed on the bottom plate of protective cabinet 1, and its output shaft is connected to the base of electric lifting lubrication pump 2, which can provide real-time feedback on the angle of rotation of electric lifting lubrication pump 2.

[0030] The DC geared motor 6 is fixed to the column of the electric lifting lubrication pump 2. A pinion 7 is installed on the output shaft of the DC geared motor 6, and the pinion 7 meshes with the external gear ring of the external gear slewing bearing 4. Therefore, when the DC geared motor 6 is energized and rotates, it can drive the electric lifting lubrication pump 2 to rotate. A low oil level switch 18 is installed on the pump cover of the electric lifting lubrication pump 2 to detect the oil level in the oil tank. When the low oil level is reached, a signal is sent.

[0031] The electric lifting lubrication pump 2 is connected to the oil outlet hose 10. The other end of the oil outlet hose 10 is connected to the rotary joint 12. The rotary joint 12 is connected to the oil outlet connector 11 on the protective cabinet 1, which delivers the lubricant out of the pump device. The rotary joint 12 is designed so that the hose 10 remains in a normal state when the electric lifting lubrication pump 2 rotates, and will not be twisted into a spiral shape.

[0032] An electrical control box 13 is installed on the inner wall of the protective cabinet 1. A small door 20 is opened at the corresponding position on the protective cabinet 1. The small door 20 is equipped with a transparent observation window, which can see all the indicator lights and display screens on the door of the electrical control box 13, so as to understand the operating status of the pump station. The electrical control box can be operated and maintained by opening the small door.

[0033] like Figure 3 When three grease drums 19 are installed inside the protective cabinet 1 around the DC push rod motor A3, the three grease drums 19 are centered on the external gear slewing bearing turntable bearing 4. The DC push rod motor B8 and the grease drum protective cover I9 are both installed on the left side wall of the protective cabinet 1. The movement of the grease drum protective cover I9 is ​​controlled by the DC push rod motor C8. When the DC push rod motor C8 is fully retracted, the grease drum protective cover I9 covers the standard grease drum 19 placed on the left side workstation. When the DC push rod motor C8 is fully extended, the grease drum protective cover I9 stands upright, without affecting the lifting operation of the electric lifting lubrication pump 2. The DC push rod motor C15 and the grease drum protective cover II14 are both installed on the rear wall of the protective cabinet 1. The movement of the grease drum protective cover II14 is controlled by the DC push rod motor C15. When the DC push rod motor C15 is fully retracted, the grease drum protective cover II14 covers the standard grease drum 19 placed on the left side workstation bearing 4. The standard grease drum 19 placed at the rear workstation is covered. When the DC push rod motor C15 is fully extended, the rear side 14 of the drum protective cover stands upright, without affecting the lifting operation of the electric lifting lubrication pump 2. The DC push rod motor D16 and the drum protective cover III17 are both located on the right side wall of the protective cabinet 1. The movement of the drum protective cover III17 is controlled by the DC push rod motor D16. When the DC push rod motor D16 is fully retracted, the drum protective cover III17 covers the standard grease drum placed at workstation 3. When the DC push rod motor D16 is fully extended, the drum protective cover III17 stands upright, without affecting the lifting operation of the electric lifting lubrication pump 2. This DC push rod motor is equipped with position feedback. That is, when the DC push rod motor is raised to its maximum, the raised position switch sends a signal, and when the DC push rod motor is fully retracted, the retracted position switch sends a signal.

[0034] like Figure 4 When four grease tanks 19 are installed inside the protective cabinet 1 around the DC push rod motor A3, the four grease tanks 19 are positioned at the center of the external gear slewing bearing turntable bearing 4. The four grease tanks 19 are respectively provided with oil tank protective covers controlled by the DC push rod motor on the inner side wall of the protective cabinet 1. The movement of the oil tank protective covers is controlled by the DC push rod motor. When the DC push rod motor is fully retracted, the oil tank protective cover covers the standard grease tank 19 placed at the workstation. When the DC push rod motor is fully extended, the oil tank protective cover stands upright, without affecting the lifting operation of the electric lifting lubrication pump 2.

[0035] When using this device, for example Figure 3 After the electric lifting lubrication pump 2 at the left working position has been running for a period of time, the low oil level switch 18 sends a signal, and the electric lifting lubrication pump 2 needs to be moved to the standby working position to work at the rear working position. At this time, the DC push rod motor C15 rises to its maximum, and the raised position switch sends a signal. At the same time, the raised position switch of the DC push rod motor B8 is also in the signaling state, and the retracted position switch of the DC push rod motor D16 is in the signaling state. Then the DC push rod motor A3 moves to its maximum and the raised position switch sends a signal. At this time, the pump body of the electric lifting lubrication pump 2... The standard grease tank is fully lifted out → DC geared motor 6 is energized and rotates, driving electric lifting lubrication pump 2 from the left workstation to the rear workstation. When angle sensor 5 detects that electric lifting lubrication pump 2 has rotated to the position directly above the rear workstation, DC geared motor 6 stops rotating → DC push rod motor A3 fully retracts, and the retraction switch signals → DC push rod motor B8 fully retracts, and the retraction switch signals, oil tank protective cover I9 covers the empty grease tank, and at the same time, the electrical control box 13 prompts "oil tank on the left workstation is empty"; the replacement method for other workstations is the same as above.

[0036] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should be included within the scope of protection defined by the claims of the present invention.

Claims

1. A multi-station automatic drum-changing electric lubrication pump device, comprising a grease drum housed in a protective cabinet, an electric lifting lubrication pump, and a DC push rod motor, characterized in that: The electric lifting lubrication pump is mounted on the grease tank and connected to a DC push rod motor A. The bottom of the DC push rod motor A is mounted on an external gear slewing bearing. An angle sensor is located in the middle of the external gear slewing bearing. The external gear slewing bearing meshes with a pinion gear, which is connected to a DC geared motor. Three grease tanks are arranged around the DC push rod motor A inside the protective cabinet. DC push rod motors B, C, and D are located on the inner side of the protective cabinet and are respectively connected to oil tank protective covers I, II, and III. Oil tank protective covers I, II, and III are connected to the three grease tanks. The barrels are matched accordingly. The outer ring of the external gear slewing bearing is mounted on the bottom plate of the protective cabinet, and the inner ring is fixed to the base of the electric lifting lubrication pump. The electric lifting lubrication pump rotates around the external gear slewing bearing. The angle sensor is fixed on the bottom plate of the protective cabinet, and its output shaft is connected to the base of the electric lifting lubrication pump. The DC geared motor is fixed to the column of the electric lifting lubrication pump. A pinion is mounted on the output shaft of the DC geared motor, and the pinion meshes with the outer gear ring of the external gear slewing bearing. A low oil level switch is installed on the pump cover of the electric lifting lubrication pump. The electric lifting lubrication pump is connected to an oil outlet hose, and the other end of the oil outlet hose is connected to a rotary joint. The rotary joint connects to the oil outlet connector on the protective cabinet. All DC push rod motors are equipped with position feedback. When the DC push rod motor reaches its maximum height, the "Lift-out Position Switch" signals; when it fully retracts, the "Retract Position Switch" signals. After the electric lifting lubrication pump on the left working station has been running for a period of time, the low oil level switch signals, and the electric lifting lubrication pump needs to be moved to the standby working station for operation at the rear working station. At this time, DC push rod motor C reaches its maximum height, and the "Lift-out Position Switch" signals. Simultaneously, the "Lift-out Position Switch" of DC push rod motor B is also signaled, and the "Retract Position Switch" of DC push rod motor D is signaled. DC push rod motor A then moves to its maximum height, reaching the "Lift-out Position Switch". When the position switch is activated, the pump body of the electric lifting lubrication pump is fully raised above the standard grease tank. The DC geared motor is powered on and rotates, driving the electric lifting lubrication pump from the left workstation to the rear workstation. When the angle sensor detects that the electric lifting lubrication pump has rotated to the position directly above the rear workstation, the DC geared motor stops rotating, the DC push rod motor A retracts completely, and the position switch is activated. The DC push rod motor B retracts completely, and the position switch is activated. The oil tank protective cover I covers the empty grease tank, and at the same time, the electrical control box prompts "The oil tank at the left workstation is empty". The replacement method for other workstations is the same as above. The electrical control box is installed on the inner wall of the protective cabinet, and a small door with a transparent observation window is provided at the corresponding position on the protective cabinet.

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