Lifting positioning device with weighing and automatic oil injection and pumping functions

Abstract

The utility model discloses a lifting positioning device with weighing and automatic oil injection and pumping functions, which comprises a base, a platform scale, a lifting positioning component and a movable oil injection and pumping component, and an avoiding groove is arranged at the top of the base; the platform scale is installed in the avoiding groove, and the position of the platform scale relative to the avoiding groove in the height direction and the horizontal direction is adjustable. The lifting positioning assembly is mounted at the top of the platform scale and is used for positioning and lifting a tray and a workpiece; the automatic oil injection and pumping assembly is installed on the base and used for conducting oil injection and oil pumping on the workpiece positioned on the lifting positioning assembly. The device can automatically perform oil injection and oil pumping operation on products entering the station, can monitor and record the weights before and after oil injection and oil pumping, and is compact in structure, complete in function, convenient to adjust and maintain and reliable in weight data detection.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing technology, specifically to a lifting and positioning device with weighing and automatic oil injection and extraction functions. Background Technology

[0002] Currently, there are two main types of equipment on production lines that function as weighing and oil injection / extraction devices:

[0003] The first method involves manual operation. A high-precision platform scale is placed at the edge of the production line. When a product needs to be measured, a person manually moves the product onto the platform scale. After measurement, the product is moved back onto the production line, and then manual or automated oil injection and extraction are performed. This method has low automation requirements for the equipment, but the operation is inefficient. With manual intervention, there are many uncontrollable factors in the measurement process, it requires a large area, and manual labor can easily lead to fatigue.

[0004] The second approach involves using a large test bench, which is set up in a large area near the production line. This bench includes a lubrication system, a weighing system, and various rotating docking and pipeline systems. Products are manually hoisted from the production line to the test bench, and then manually or automatically docked with the various pipelines before back potential zero-point detection. This type of testing equipment has a high degree of automation and integration, but it also occupies a large area, makes product hoisting cumbersome, and has lower testing efficiency, making it unsuitable for testing in high-volume, high-paced assembly line production. Utility Model Content

[0005] As described above, existing lifting and positioning devices generally have limited capacity for adding weighing and automatic oil injection / extraction functions. When weighing or automatic oil injection / extraction is required, additional workstations are typically added. However, in some production lines with limited workstations or special workflows, it is necessary to perform these operations simultaneously at the same workstation. To address this issue, the present invention aims to provide a lifting and positioning device for automatic weighing and automatic oil injection / extraction on a production line. This device, through rational design, integrates weighing and automatic oil injection / extraction functions into a single unit, becoming a novel lifting and positioning device. Its layout is reasonable and compact, facilitating installation, adjustment, and maintenance. This device significantly reduces the space occupied by such equipment at workstations, allowing for greater functionality within a smaller space.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] A lifting and positioning device with weighing and automatic oil injection / extraction functions, the lifting and positioning device comprising:

[0008] A base, wherein a clearance groove is provided on the top of the base;

[0009] A platform scale, wherein the platform scale is installed in the clearance groove, and the position of the platform scale relative to the clearance groove in the height and horizontal direction is adjustable;

[0010] A lifting and positioning assembly is installed on the top of the platform scale and is used to position and lift the pallet and workpiece.

[0011] An automatic oil injection and extraction assembly is mounted on the base and is used to inject and extract oil from a workpiece positioned on the lifting and positioning assembly.

[0012] This device can automatically perform oil injection and oil extraction operations on products entering this workstation, and can monitor and record the weight before and after oil injection and oil extraction. The device has a compact structure, complete functions, convenient adjustment and maintenance, and reliable weight data detection.

[0013] As a further optimization of this utility model, a height adjustment structure for adjusting the height position of the platform scale is installed on the bottom surface of the platform scale, and a horizontal adjustment structure for adjusting the horizontal position of the platform scale is installed in the clearance groove.

[0014] As a further optimization of this utility model, the height adjustment structure includes a clamping block, a screw rod is provided through the middle of the clamping block, the top of the screw rod is threaded to the bottom of the platform scale, a nut and a disc are fixed at the bottom of the screw rod below the clamping block, and through holes are provided on both sides of the clamping block. A first bolt fixed in the clearance groove is installed in the through hole, and the diameter of the through hole is larger than the diameter of the first bolt.

[0015] As a further optimization of this utility model, the horizontal adjustment structure includes an arc-shaped clamping block, which is fixed in the clearance groove by a second bolt. The arc-shaped clamping block has multiple first horizontal adjustment bolts with different angles passing through it in the horizontal direction. The first horizontal adjustment bolts can be adjusted to make tight contact with the outer surface of the disc.

[0016] As a further optimization of this utility model, the lifting and positioning assembly includes a lifting and fixing frame, which is fixed to the platform scale via a connecting base. A lifting plate is installed on the top of the lifting and fixing frame via a telescopic sleeve. A lifting cylinder for driving the lifting plate to rise and fall is installed on the lifting and fixing frame. A first switch assembly for detecting the lifting position of the lifting plate is installed on the lifting and fixing frame. A positioning pin for positioning the pallet is installed on the top surface of the lifting plate.

[0017] As a further optimization of this utility model, a card reader is installed on the lifting and fixing frame for reading and writing the code carrier on the tray.

[0018] As a further optimization of this utility model, the horizontal position of the lifting and fixing frame relative to the connecting base is adjustable.

[0019] As a further optimization of this utility model, a large hole is provided on the support plate at the bottom of the lifting and fixing frame. The support plate is connected to the threaded hole on the connecting base by a third bolt passing through the large hole. The diameter of the large hole is larger than the diameter of the third bolt. Fixing blocks are installed on the connecting base on the outside of the support plate in two vertical directions. A second horizontal adjusting bolt is horizontally threaded onto the fixing block. The second horizontal adjusting bolt can be adjusted to make tight contact with the support plate.

[0020] As a further optimization of this utility model, the automatic oil injection and extraction assembly includes a fixed rod, which is installed on the base and passes through the inside of the lifting and positioning assembly. A lifting cylinder and a linear guide rail are installed on the fixed rod via a fixed connecting seat. An oil injection and extraction docking joint is slidably connected to the linear guide rail via a movable connecting seat. The lifting cylinder is drivenly connected to the movable connecting seat. A second switch assembly for detecting the lifting position of the oil injection and extraction docking joint is installed on the fixed connecting seat. The top of the lifting and positioning assembly is provided with a notch for the lifting and extraction of the oil injection and extraction docking joint.

[0021] As a further optimization of this utility model, the automatic oil injection and pumping assembly is arranged separately from the platform scale and the lifting and positioning assembly in terms of height space.

[0022] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0023] (1) This utility model integrates weighing function, automatic oil injection and extraction function and lifting and positioning function into one, forming a new type of lifting and positioning device. This integrated design greatly reduces the space occupied by equipment on the production line station and improves the space utilization rate of the production line.

[0024] (2) The platform scale is adjustable in both height and horizontal direction. The height and horizontal adjustment structures allow for precise adjustment of the platform scale's position, ensuring weighing accuracy and increasing the device's flexibility and adaptability. The horizontal position of the lifting and positioning assembly's lifting and fixing frame relative to the connecting base is also adjustable. This prevents the need for further adjustments to the platform scale later, as it is a high-precision testing device with strict requirements for position and horizontal alignment. Once the platform scale is installed and adjusted, further adjustments are not recommended.

[0025] (3) The lifting and positioning assembly can automatically position and lift the pallet and workpiece, improving production efficiency. The automatic oil injection and extraction assembly can automatically perform oil injection and extraction operations on the workpiece positioned on the lifting and positioning assembly, reducing manual intervention and improving work efficiency and accuracy.

[0026] (4) The card reader installed on the lifting and fixing frame can read the code information on the pallet, realizing intelligent management and traceability. Switch components are installed on both the lifting and positioning assembly and the automatic oil injection and extraction assembly to detect the position status and ensure the accuracy and safety of the operation process.

[0027] (5) The device of this utility model has a reasonable layout and compact structure, which facilitates installation, adjustment and maintenance. The connection between the various components is ingeniously designed, such as using nuts and horizontal adjusting bolts to achieve precise position adjustment, while ensuring the stability and reliability of the structure.

[0028] (6) This utility model is suitable for mass production and high-speed assembly line production environments, and can meet the production line’s requirements for equipment to be multifunctional, efficient and small in space. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the lifting and positioning device of this utility model.

[0030] Figure 2 This is a schematic diagram of the assembly structure of the platform scale and lifting positioning component of this utility model.

[0031] Figure 3 for Figure 2 A schematic diagram of the longitudinal cross-sectional structure.

[0032] Figure 4 for Figure 2 A schematic diagram of the transverse cross-sectional structure.

[0033] Figure 5 for Figure 2 A magnified structural diagram at point A in the diagram.

[0034] Figure 6 for Figure 3A magnified structural diagram at point B in the diagram.

[0035] Figure 7 This is a schematic diagram of the structure of the automatic oil injection and extraction assembly of this utility model.

[0036] The diagram is labeled as follows: 1. Base; 101. Clearance groove; 2. Platform scale; 3. Lifting and positioning assembly; 301. Lifting fixing frame; 302. Connecting base; 303. Telescopic sleeve; 304. Lifting plate; 305. Lifting cylinder; 306. First switch assembly; 307. Positioning pin; 308. Support base plate; 309. Third bolt; 310. Fixing block; 311. Second leveling bolt; 312. Notch; 4. Automatic oil injection and extraction assembly; 401. Fixing rod; 402. Fixed connecting seat; 403. Lifting cylinder; 404. Linear guide rail; 405. Movable connecting seat; 406. Oil injection / extraction docking joint; 407. Second switch assembly; 5. Height adjustment structure; 501. Clamping block; 502. Screw; 503. Disc; 504. Nut; 505. First bolt; 506. Through hole; 6. Horizontal adjustment structure; 601. Arc-shaped clamping block; 602. Second bolt; 603. First horizontal adjustment bolt; 7. Card reader. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0038] Please see Figures 1-6 This embodiment provides a lifting and positioning device with weighing and automatic oil injection and extraction functions.

[0039] The lifting and positioning device includes a base 1, a platform scale 2, a lifting and positioning assembly 3, an automatic oil injection and extraction assembly 4, and a card reader 7. The base 1 has a large clearance groove 101 on its top. The platform scale 2 is installed within the clearance groove 101, and its position relative to the clearance groove 101 in both height and horizontal direction is adjustable. The lifting and positioning assembly 3 is installed on top of the platform scale 2 and is used for positioning and lifting the pallet and workpiece. The automatic oil injection and extraction assembly 4 is installed on the base 1 and is used for injecting and extracting oil from the workpiece positioned on the lifting and positioning assembly 3.

[0040] In some examples, the bottom surface of the platform scale 2 is equipped with four height adjustment structures 5 for adjusting the height position of the platform scale 2, and four level adjustment structures 6 for adjusting the horizontal position of the platform scale 2 are installed in the clearance groove 101. The height adjustment structures 5 and the level adjustment structures 6 are set in a one-to-one correspondence.

[0041] For details, please refer to Figure 3 and Figure 6 The height adjustment structure 5 includes a clamping block 501, with a screw 502 running through its center. The top of the screw 502 is threaded to the bottom of the platform scale 2. A nut 504 and a disc 503 are fixed to the bottom of the screw 502 below the clamping block 501. Through holes 506 are provided on both sides of the clamping block 501, and a first bolt 505 fixed in the clearance groove 101 is installed in the through hole 506. The diameter of the through hole 506 is larger than the diameter of the first bolt 505. The screw 502, nut 504, and disc 503 are integrally formed. By rotating the nut 504, the screw 502 is driven to screw in or out on the platform substrate, thereby adjusting the height of the platform scale 2. The diameter of the through hole 506 is larger than the diameter of the first bolt 505. This design increases the horizontal movement space of the clamping block 501, thus providing the necessary conditions for adjusting the horizontal position of the platform scale 2. The aforementioned height adjustment structure 5, through components such as screw 502, nut 504, and disc 503, enables precise adjustment of the height position of the platform scale 2, which is easy to operate and has a wide adjustment range.

[0042] For details, please refer to Figure 2 and Figure 5 The horizontal adjustment structure 6 includes an arc-shaped clamping block 601, which is fixed in the clearance groove 101 by a second bolt 602. Multiple first horizontal adjustment bolts 603 at different angles penetrate the arc-shaped clamping block 601 in the horizontal direction. These first horizontal adjustment bolts 603 can be adjusted to make tight contact with the outer surface of the disc 503. By rotating the first horizontal adjustment bolts 603 at different angles, the disc 503 can be moved in different directions, thereby adjusting the position of the platform scale 2 in terms of the water surface. After the final height and horizontal position are adjusted, the platform scale 2 is tightened by the clamping block 501 and the first bolts 505 to prevent it from tilting or being pulled upwards. The horizontal adjustment structure 6, through components such as the arc-shaped clamping block 601 and the first horizontal adjustment bolts 603, achieves precise adjustment of the horizontal position of the platform scale 2, ensuring the stability of the device in the horizontal direction.

[0043] In some examples, please refer to Figure 2The lifting and positioning assembly 3 includes a lifting and fixing frame 301. Connection holes are pre-machined on the weighing surface of the platform scale 2, and the connecting base 302 of the lifting and positioning assembly 3 is connected to the platform scale 2 through these connection holes. A lifting plate 304 is mounted on the top of the lifting and fixing frame 301 via a telescopic sleeve 303. A lifting cylinder 305 for driving the lifting plate 304 to rise and fall is mounted on the lifting and fixing frame 301. A first switch assembly 306 for detecting the lifting position of the lifting plate 304 is also mounted on the lifting and fixing frame 301 to automate the device. A positioning pin 307 for positioning the pallet is mounted on the top surface of the lifting plate 304. The lifting and positioning assembly 3 includes components such as the lifting and fixing frame 301, the lifting plate 304, and the lifting cylinder 305. Through the coordinated operation of these components, the positioning and lifting of the pallet and workpiece are achieved, improving the automation level of the device.

[0044] In some examples, please refer to Figure 1 A card reader 7 is installed on the lifting and fixing frame 301 for reading and writing the code carrier on the pallet. The pallet has a code carrier that can store certain data, such as the specific number of the product on the pallet and various production information (such as tightening, gluing, oiling, weight, etc.). The cooperation between the code carrier and the card reader 7 enables each station on the assembly line to identify the product and record the assembly process of the product at that station.

[0045] In some examples, the horizontal position of the lifting and fixing frame 301 relative to the connecting base 302 is adjustable, further increasing the flexibility and adaptability of the device to meet the needs of workpieces of different sizes and shapes.

[0046] For details, please refer to Figure 4 The bottom support plate 308 of the lifting and fixing frame 301 has a large hole. The support plate 308 is connected to the threaded hole on the connecting base 302 by a third bolt 309 passing through the large hole. The diameter of the large hole is larger than the diameter of the third bolt 309. This fixing method ensures that the lifting and positioning frame has a certain amount of horizontal adjustment. The connecting base 302 on the outer side of the support plate 308 has fixing blocks 310 installed in two vertical directions. A second horizontal adjusting bolt 311 is horizontally threaded onto the fixing block 310. The second horizontal adjusting bolt 311 can be adjusted to make tight contact with the support plate 308. The horizontal adjusting bolts allow for a certain amount of adjustment and tightening of the lifting and positioning frame. These features ensure that the lifting and positioning frame has a certain degree of horizontal adjustment capability.

[0047] In some examples, please refer to Figure 7The automatic oil injection and extraction assembly 4 includes a fixed rod 401, which is mounted on the base 1 and passes through the inside of the lifting and positioning assembly 3. A lifting cylinder 403 and a linear guide rail 404 are mounted on the fixed rod 401 via a fixed connecting seat 402. An oil injection and extraction docking joint 406 is slidably connected to the linear guide rail 404 via a movable connecting seat 405. The lifting cylinder 403 is driven to connect with the movable connecting seat 405. A second switch assembly 407 for detecting the lifting position of the oil injection and extraction docking joint 406 is mounted on the fixed connecting seat 402 to automate the device. A notch 312 is provided on the lifting plate 304 at the top of the lifting and positioning assembly 3 for lifting and docking of the oil injection and extraction docking joint 406. The aforementioned automatic oil injection and extraction assembly 4 includes components such as a fixed rod 401, a lifting cylinder 403, a linear guide rail 404, and an oil injection and extraction connector 406. Through the coordinated work of these components, automatic oil injection and extraction of the workpiece are achieved, improving the automation level of the production line. The oil injection and extraction connector 406 is connected to an external oil supply machine via a pipeline. Subsequently, driven by the oil supply machine, precise quantitative automatic oil injection and subsequent automatic oil extraction of the product can be achieved at this workstation.

[0048] In some examples, the automatic oil injection and extraction assembly 4 is arranged separately from the platform scale 2 and the lifting and positioning assembly 3 in terms of height. Through reasonable design, the automatic oil injection and extraction assembly 4 is arranged separately from the platform scale 2 and the lifting and positioning assembly 3 in terms of height, avoiding mutual interference and improving the compactness and space utilization of the device.

[0049] After the three sets of devices are integrated, the lifting and positioning component 3 can achieve precise positioning of the pallet and workpiece. The high-precision platform scale 2 actually weighs the weight of the lifting and positioning component 3, the weight of the pallet, and the weight of the workpiece. The weight of the automatic oil injection and extraction component 4 is not included in the weighing system. The automatic oil injection and extraction component 4 can normally perform oil injection and extraction operations on the workpiece. The weight of the residual lubricating oil in the workpiece after oil injection and extraction can be calculated by the difference between the two weighings. After the entire device is installed, the lifting and positioning device can automatically lift and position the pallet and workpiece, automatically inject and extract oil, and read the weight before and after oil injection and extraction after the pallet and workpiece enter the workstation via the roller conveyor. This device can automatically perform oil injection and extraction operations on products entering the workstation, and can monitor and record the weight before and after oil injection and extraction. This device has a compact structure, complete functions, convenient adjustment and maintenance, and reliable weight data detection.

[0050] Based on the description and accompanying drawings of this utility model, those skilled in the art can easily manufacture or use the lifting and positioning device of this utility model, which has weighing and automatic oil injection and extraction functions, and can produce the positive effects described in this utility model. This utility model has been applied to pallets on engine assembly lines in the automotive industry. It can also be extended to carriers or fixtures on assembly lines in other industries.

[0051] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0052] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0053] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A lifting and positioning device with weighing and automatic oil injection / extraction functions, characterized in that, The lifting and positioning device includes: A base (1) is provided with a clearance groove (101) on its top; Platform scale (2), the platform scale (2) is installed in the clearance groove (101), and the position of the platform scale (2) relative to the clearance groove (101) in the height and horizontal direction is adjustable; Lifting and positioning component (3), which is installed on the top of the platform scale (2), is used to position and lift the pallet and workpiece; An automatic oil injection and extraction assembly (4) is installed on the base (1) and is used to inject and extract oil from the workpiece positioned on the lifting and positioning assembly (3).

2. The lifting and positioning device with weighing and automatic oil injection / extraction functions according to claim 1, characterized in that, The platform scale (2) is equipped with a height adjustment structure (5) for adjusting the height position of the platform scale (2) on its bottom surface, and a horizontal adjustment structure (6) for adjusting the horizontal position of the platform scale (2) is installed in the clearance groove (101).

3. The lifting and positioning device with weighing and automatic oil injection / extraction functions according to claim 2, characterized in that, The height adjustment structure (5) includes a clamping block (501), a screw (502) is provided through the middle of the clamping block (501), the top of the screw (502) is threaded to the bottom of the platform scale (2), a nut (504) and a disc (503) are fixed at the bottom of the screw (502) below the clamping block (501), and through holes (506) are provided on both sides of the clamping block (501). A first bolt (505) fixed in the clearance groove (101) is installed in the through hole (506), and the diameter of the through hole (506) is larger than the diameter of the first bolt (505).

4. The lifting and positioning device with weighing and automatic oil injection / extraction functions according to claim 3, characterized in that, The horizontal adjustment structure (6) includes an arc-shaped clamping block (601), which is fixed in the relief groove (101) by a second bolt (602). The arc-shaped clamping block (601) has multiple first horizontal adjustment bolts (603) with different angles passing through it in the horizontal direction. The first horizontal adjustment bolts (603) can be adjusted to make tight contact with the outer surface of the disc (503).

5. The lifting and positioning device with weighing and automatic oil injection / extraction functions according to claim 1, characterized in that, The lifting and positioning assembly (3) includes a lifting and fixing frame (301), which is fixed to the platform scale (2) via a connecting base (302). A lifting plate (304) is installed above the lifting and fixing frame (301) via a telescopic sleeve (303). A lifting cylinder (305) for driving the lifting plate (304) to rise and fall is installed on the lifting and fixing frame (301). A first switch assembly (306) for detecting the lifting position of the lifting plate (304) is installed on the lifting and fixing frame (301). A positioning pin (307) for positioning the pallet is installed on the top surface of the lifting plate (304).

6. The lifting and positioning device with weighing and automatic oil injection / extraction functions according to claim 5, characterized in that, A card reader (7) is installed on the lifting and fixing frame (301) for reading and writing the code carrier on the tray.

7. The lifting and positioning device with weighing and automatic oil injection / extraction functions according to claim 5, characterized in that, The horizontal position of the lifting and fixing frame (301) relative to the connecting base (302) is adjustable.

8. The lifting and positioning device with weighing and automatic oil injection / extraction functions according to claim 7, characterized in that, The bottom of the lifting and fixing frame (301) has a large hole on the support plate (308). The support plate (308) is connected to the threaded hole on the connecting base (302) by a third bolt (309) passing through the large hole. The diameter of the large hole is larger than the diameter of the third bolt (309). The connecting base (302) on the outside of the support plate (308) has fixing blocks (310) installed in two vertical directions. The fixing blocks (310) are horizontally threaded with a second horizontal adjusting bolt (311). The second horizontal adjusting bolt (311) can be adjusted to be in tight contact with the support plate (308).

9. The lifting and positioning device with weighing and automatic oil injection / extraction functions according to claim 1, characterized in that, The automatic oil injection and extraction assembly (4) includes a fixed rod (401), which is mounted on the base (1) and passes through the inside of the lifting and positioning assembly (3). A lifting cylinder (403) and a linear guide rail (404) are mounted on the fixed rod (401) via a fixed connecting seat (402). An oil injection and extraction docking joint (406) is slidably connected to the linear guide rail (404) via a movable connecting seat (405). The lifting cylinder (403) is drivenly connected to the movable connecting seat (405). A second switch assembly (407) for detecting the lifting position of the oil injection and extraction docking joint (406) is mounted on the fixed connecting seat (402). The top of the lifting and positioning assembly (3) is provided with a notch (312) for the lifting and extraction of the oil injection and extraction docking joint (406).

10. The lifting and positioning device with weighing and automatic oil injection / extraction functions according to claim 1 or 9, characterized in that, The automatic oil injection and extraction assembly (4) is arranged separately from the platform scale (2) and the lifting and positioning assembly (3) in terms of height space.

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