An automatic docking system for an oil transfer arm and method thereof

Abstract

The present application relates to oil delivery arm technical field, disclose a kind of oil delivery arm automatic docking system and method thereof, including oil inlet pipe and lower insertion pipe, the top of the oil inlet pipe is provided with automatic docking mechanism, the automatic docking mechanism includes lower mounting ring, a plurality of equidistantly distributed sliding grooves are opened in the lower mounting ring, each sliding groove is slidably connected with the top rod, and the outer side of the top rod is movably sleeved with a sleeve;The outside of the oil inlet pipe is provided with a drive mechanism, the drive mechanism includes hydraulic cylinder, and one moving sleeve is fixedly installed at the top of two hydraulic cylinders;The top of the lower insertion pipe is movably inserted with upper insertion pipe.The first pull plate and the second pull plate are driven to rotate by hydraulic rod, so that the surrounding top rod is retracted, the lower insertion pipe at the top is aligned, and is located at the center position of the oil inlet pipe, while the top rod moves the baffle and is locked with the clamping block, to realize the automatic connection of the oil inlet pipe and the lower insertion pipe.

Description

Technical Field

[0001] This invention belongs to the field of oil delivery arm technology, specifically, it relates to an automatic docking system and method for oil delivery arms. Background Technology

[0002] The oil conveying boom mainly consists of the boom body, the transfer pipe, the hydraulic system, and the control system. The boom body is the main support component of the oil conveying boom, usually made of high-strength alloy steel, which ensures the stability of the oil conveying boom during operation. The transfer pipe is the interface for inputting liquid oil from the storage tank to the oil pipeline. The hydraulic system can control the up-down, forward-backward, and left-right movements of the oil conveying boom. The control system controls the oil conveying boom through operating levers or buttons.

[0003] When loading and unloading fluids on port vessels, oil transfer arms are typically used. Using oil transfer arms requires connecting oil pipelines. However, when the vessel is floating on the water, and there is strong wind at sea, the vessel is severely swayed by the wind, causing the pipelines of the oil transfer arms to sway as well, making it impossible to accurately align and connect the oil transfer arms.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To address the technical problem of ships swaying violently in strong winds while floating on the water, causing the pipelines of the oil transfer arm to swing and making precise alignment and connection of the oil transfer arm impossible, the basic concept of the technical solution adopted in this invention is as follows:

[0006] An automatic docking system for an oil delivery arm includes an oil inlet pipe and a lower insertion pipe. An automatic docking mechanism is provided at the top of the oil inlet pipe. The automatic docking mechanism includes a lower mounting ring. The inner wall of the lower mounting ring is fixedly sleeved on the top of the oil inlet pipe. The lower mounting ring has multiple equally spaced sliding grooves. A top rod is slidably connected in each of the sliding grooves. A sleeve is movably sleeved on the outside of the top rod.

[0007] A drive mechanism is provided on the outside of the oil inlet pipe. The drive mechanism includes hydraulic cylinders. Two hydraulic cylinders are symmetrically distributed and fixedly installed on both sides of the oil inlet pipe. A movable sleeve is fixedly installed on the top of the two hydraulic cylinders. The movable sleeve is located at the bottom of the sleeve.

[0008] The upper insertion tube is movably inserted into the top of the lower insertion tube, and the upper mounting ring is rotatably sleeved at the bottom of the lower insertion tube. The cross-sectional shape and size of the upper mounting ring are adapted to the lower mounting ring.

[0009] In a preferred embodiment of the present invention, each of the sleeves is rotatably connected to a symmetrically distributed first pull plate and a second pull plate on both sides. The distance between the two ends of the first pull plate and the second pull plate is adapted to each other. The directions of the first pull plate and the second pull plate are parallel to each other. The other ends of the first pull plate and the second pull plate are rotatably connected to the side of the oil inlet pipe. The first pull plate is located at the bottom of the second pull plate and at the top of the movable sleeve.

[0010] In a preferred embodiment of the present invention, the upper mounting ring has a plurality of circular holes, the number and position of which are adapted to the top rod. A guide plate is installed at the bottom of the upper mounting ring between two adjacent circular holes. The guide plate has a V-shaped cross-section, and its two ends are tangent to the edges of the circular holes on both sides. The top of the lower mounting ring has a plurality of fitting grooves, which are adapted to the guide plate.

[0011] In a preferred embodiment of the present invention, a first push rod is provided at the position opposite to the circular hole on the top of the upper mounting ring, and a second push rod is provided between two adjacent first push rods. The bottom of the second push rod is fixedly installed on the top of the upper mounting ring. A piston is fixedly installed on the top of both the first push rod and the second push rod. A connecting cavity is movably sleeved on the outside of the piston. The connecting cavity is filled with hydraulic oil and is rotatably sleeved on the outside of the upper insertion tube.

[0012] In a preferred embodiment of the present invention, a support plate is fixedly installed inside the upper insertion tube. The support plate has a cross-shaped cross section, and a support rod is fixedly installed at the bottom of the support plate. A sealing block is fixedly installed at the bottom of the support rod, and the sealing block has a frustum-shaped cross section.

[0013] In a preferred embodiment of the present invention, a sealing ring is installed on the inner wall of the lower insertion tube. The shape of the sealing ring is adapted to the sealing block. A plurality of equally spaced limiting rods are installed on the top of the sealing ring. A positioning cylinder is movably sleeved on the outer side of the limiting rod. One side of the positioning cylinder is fixedly installed on the inner wall of the upper insertion tube. A limiting block is fixedly installed on the top of the limiting rod. A second spring is movably sleeved on the limiting rod. The two ends of the second spring are respectively fixedly installed on the bottom of the limiting block and the top of the positioning cylinder.

[0014] In a preferred embodiment of the present invention, a baffle is installed on the top of the top rod, the cross-sectional shape and size of the baffle are adapted to the circular hole, a rotating plate is rotatably connected to the bottom two sides of the baffle, the rotating plate is located on both sides of the top rod, a torsion spring is installed at the connection between the rotating plate and the baffle, and a top block is fixedly installed at the bottom of the top rod.

[0015] In a preferred embodiment of the present invention, grooves are provided on both sides of the top of the top rod, and a stop rod is slidably connected in the groove. The two ends of the stop rod are located on the top of the two rotating plates. A pull rod is fixedly installed at the bottom of the stop rod. The bottom of the pull rod movably passes through the top rod and the top block and extends to the outside. An iron block is installed at the outer end of the pull rod. A magnet is installed on the inner wall of the movable sleeve. The position of the magnet corresponds to the position of the iron block.

[0016] In a preferred embodiment of the present invention, a locking block is provided at the top of the upper mounting ring outside the circular hole. The cross-sectional shape of the locking block is an inverted trapezoid. Two sliding rods are installed at one end of the locking block. A fixing cylinder is movably sleeved on the upper part of each of the two sliding rods. The bottom of the fixing cylinder is fixedly installed on the top of the upper mounting ring. A first spring is movably sleeved on the sliding rod. The two ends of the first spring are respectively fixedly installed at one end of the locking block and one end of the fixing cylinder.

[0017] This invention also discloses a method for using an automatic docking system for oil transfer arms, the steps of which are as follows:

[0018] S1. When docking the oil delivery arm, lower the upper pipe, lower pipe and upper mounting ring as a whole, and make the bottom of the upper mounting ring abut against the top of the baffle. At this time, start the hydraulic cylinder, the hydraulic cylinder drives the moving sleeve to rise. During the rise of the moving sleeve, it abuts against the first pull plate and makes it rotate. The first pull plate drives the sleeve to move. At the same time, the second pull plate is the same length as the first pull plate and is parallel to each other, so that the sleeve can move in parallel.

[0019] S2. Multiple sleeves move and drive the push rod to move. The push rod drives the baffle to move, thereby pushing the bottom of the lower insertion tube toward the center of the oil inlet tube. During the movement, the baffle drives the upper mounting ring to rotate through the guide plate, and rotates the position of the round hole to the position opposite to the baffle.

[0020] S3. The hydraulic cylinder continues to drive the moving sleeve to move. The magnet on the inner wall of the moving sleeve abuts against the iron block, the iron block abuts against the top block, and the top block drives the baffle to rise through the push rod. The baffle abuts against the first push rod to make it rise. The first push rod compresses the hydraulic oil in the connecting cavity through the piston and drives the second push rod to move down. The second push rod drives the upper mounting ring to fall, thereby driving the lower insertion pipe to fall and connect with the oil inlet pipe and the lower mounting ring.

[0021] S4. When the lower insertion tube moves, it causes the sealing ring to descend, thereby separating the sealing ring from the sealing block. At this time, the passage of the upper and lower insertion tubes is opened. During the movement of the baffle, it abuts against the locking block and moves it to one side. When the baffle and the locking block are misaligned, the elastic force of the first spring causes the locking block to reset, thereby locking the baffle and fixing the oil inlet pipe.

[0022] S5. When the oil delivery arm needs to be disconnected, the hydraulic cylinder is retracted, which pulls the moving sleeve down. The moving sleeve is attracted to the iron block by the magnetic force of the magnet, causing it to descend. The iron block drives the stop rod down through the pull rod, and the stop rod pushes the rotating plate down. The rotating plate abuts against the locking block and moves it to one side, so that the stop plate can descend and disengage from the upper mounting ring through the round hole. At this time, the elastic force of the second spring drives the limit block to move up, which drives the sealing ring and the lower insertion tube to move up through the limit rod. The sealing ring and the sealing block cooperate to close the passage between the upper and lower insertion tubes.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] This invention uses a hydraulic rod to drive the first and second pull plates to rotate, thereby causing the surrounding push rods to retract, thus aligning the lower insertion tube at the top and placing it in the center of the oil inlet pipe. At the same time, the push rods drive the baffle to move and lock with the locking block, realizing the automatic connection between the oil inlet pipe and the lower insertion tube.

[0025] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0026] In the attached diagram:

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the movable sleeve of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure at the mounting ring of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure at the mounting ring of the present invention;

[0031] Figure 5 This is a schematic diagram of the internal structure of the communicating cavity of the present invention;

[0032] Figure 6 This is a schematic diagram of the internal structure of the lower insertion cannula of the present invention;

[0033] Figure 7 This is a schematic diagram of the structure of the card block in this invention;

[0034] Figure 8 This is a schematic diagram of the structure at the rotating plate of the present invention.

[0035] In the picture:

[0036] 100. Oil inlet pipe; 101. Hydraulic cylinder; 102. Moving sleeve; 103. Magnet; 104. First pull plate; 105. Second pull plate; 106. Sleeve;

[0037] 200. Lower mounting ring; 201. Slide groove; 202. Adaptor groove; 203. Top rod; 204. Baffle; 205. Top block; 206. Iron block; 207. Pull rod; 208. Stop rod; 209. Groove; 210. Rotating plate; 211. Torsion spring;

[0038] 300. Upper insertion tube; 301. Lower insertion tube; 302. Upper mounting ring; 303. Round hole; 304. Guide plate;

[0039] 400, connecting cavity; 401, first push rod; 402, second push rod; 403, piston;

[0040] 500, locking block; 501, sliding rod; 502, first spring; 503, fixing cylinder;

[0041] 600. Support plate; 601. Support rod; 602. Sealing block; 603. Sealing ring; 604. Limiting rod; 605. Second spring; 606. Limiting block; 607. Positioning cylinder. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0043] Example 1:

[0044] like Figures 1 to 8 As shown, an automatic docking system for an oil delivery arm includes an oil inlet pipe 100 and a lower insertion pipe 301. An automatic docking mechanism is provided at the top of the oil inlet pipe 100. The automatic docking mechanism includes a lower mounting ring 200. The inner wall of the lower mounting ring 200 is fixedly sleeved on the top of the oil inlet pipe 100. Multiple equally spaced sliding grooves 201 are provided on the lower mounting ring 200. A top rod 203 is slidably connected in each sliding groove 201. A sleeve 106 is movably sleeved on the outside of the top rod 203.

[0045] A drive mechanism is provided on the outside of the oil inlet pipe 100. The drive mechanism includes a hydraulic cylinder 101. Two hydraulic cylinders 101 are symmetrically distributed and fixedly installed on both sides of the oil inlet pipe 100. A movable sleeve 102 is fixedly installed on the top of the two hydraulic cylinders 101. The movable sleeve 102 is located at the bottom of the sleeve 106.

[0046] The upper insertion tube 300 is movably inserted into the top of the lower insertion tube 301, and the upper mounting ring 302 is rotatably sleeved at the bottom of the lower insertion tube 301. The cross-sectional shape and size of the upper mounting ring 302 are adapted to the lower mounting ring 200.

[0047] like Figures 1 to 8As shown, in a specific embodiment, each sleeve 106 has a symmetrically distributed first pull plate 104 and second pull plate 105 rotatably connected to both sides. The distance between the two ends of the first pull plate 104 and the second pull plate 105 is matched, and the directions of the first pull plate 104 and the second pull plate 105 are parallel to each other. The other ends of the first pull plate 104 and the second pull plate 105 are rotatably connected to the side of the oil inlet pipe 100. The first pull plate 104 is located at the bottom of the second pull plate 105 and at the top of the movable sleeve 102. In this configuration, the hydraulic cylinder 101 drives the movable sleeve 102 to rise. During the rise, the movable sleeve 102 abuts against the first pull plate 104 and rotates it. The first pull plate 104 drives the sleeve 106 to move. At the same time, the second pull plate 105 is the same length as the first pull plate 104 and is parallel to each other, so that the sleeve 106 can move in parallel. The movement of multiple sleeves 106 drives the push rod 203 to move. The push rod 203 drives the baffle 204 to move, thereby pushing the bottom of the lower insertion tube 301 toward the center of the oil inlet tube 100.

[0048] like Figures 1 to 8 As shown, furthermore, the upper mounting ring 302 has multiple circular holes 303, the number and position of which are adapted to the top rod 203. A guide plate 304 is installed at the bottom of the upper mounting ring 302 between two adjacent circular holes 303. The guide plate 304 has a V-shaped cross-section, and both ends of the guide plate 304 are tangent to the edges of the circular holes 303 on both sides. The top of the lower mounting ring 200 has multiple fitting grooves 202, which fit into the guide plate 304. In this configuration, during movement, the baffle 204 drives the upper mounting ring 302 to rotate via the guide plate 304, causing the circular holes 303 to rotate to a position opposite to the baffle 204.

[0049] Example 2:

[0050] like Figures 1 to 8 As shown, in a specific embodiment, a first push rod 401 is provided at the position opposite to the circular hole 303 on the top of the upper mounting ring 302. A second push rod 402 is provided between two adjacent first push rods 401. The bottom of the second push rod 402 is fixedly installed on the top of the upper mounting ring 302. A piston 403 is fixedly installed on the top of both the first push rod 401 and the second push rod 402. A connecting cavity 400 is movably sleeved on the outside of the piston 403. The connecting cavity 400 is filled with hydraulic oil and is rotatably sleeved on the outside of the upper insertion tube 300. In this configuration, the baffle 204 abuts against the first push rod 401 to make it rise. The first push rod 401 compresses the hydraulic oil in the connecting cavity 400 through the piston 403, and drives the second push rod 402 to move down. The second push rod 402 drives the upper mounting ring 302 to descend, thereby driving the lower insertion tube 301 to descend.

[0051] like Figures 1 to 8As shown, further, a support plate 600 is fixedly installed inside the upper insertion tube 300. The support plate 600 has a cross-shaped cross section, and a support rod 601 is fixedly installed at the bottom of the support plate 600. A sealing block 602 is fixedly installed at the bottom of the support rod 601, and the sealing block 602 has a frustum-shaped cross section. In this configuration, when the lower insertion tube 301 moves, it causes the sealing ring 603 to descend, thereby separating the sealing ring 603 from the sealing block 602. At this time, the passage between the upper insertion tube 300 and the lower insertion tube 301 is opened.

[0052] like Figures 1 to 8 As shown, further, a sealing ring 603 is installed on the inner wall of the lower insertion tube 301. The shape of the sealing ring 603 is adapted to the sealing block 602. Multiple equally spaced limiting rods 604 are installed on the top of the sealing ring 603. A positioning cylinder 607 is movably sleeved on the outer side of the limiting rod 604. One side of the positioning cylinder 607 is fixedly installed on the inner wall of the upper insertion tube 300. A limiting block 606 is fixedly installed on the top of the limiting rod 604. A second spring 605 is movably sleeved on the limiting rod 604. The two ends of the second spring 605 are respectively fixedly installed on the bottom of the limiting block 606 and the top of the positioning cylinder 607. In this configuration, the elastic force of the second spring 605 drives the limiting block 606 to move upward, which in turn drives the sealing ring 603 and the lower insertion tube 301 to move upward through the limiting rod 604. The sealing ring 603 cooperates with the sealing block 602, thereby closing the passage between the upper insertion tube 300 and the lower insertion tube 301.

[0053] Example 3:

[0054] like Figures 1 to 8As shown, in a specific embodiment, a baffle 204 is installed on the top of the top rod 203. The cross-sectional shape and size of the baffle 204 are adapted to the circular hole 303. Rotating plates 210 are rotatably connected to the bottom sides of the baffle 204. The rotating plates 210 are located on both sides of the top rod 203. A torsion spring 211 is installed at the connection between the rotating plate 210 and the baffle 204. A top block 205 is fixedly installed at the bottom of the top rod 203. Grooves 209 are opened on both sides of the top of the top of the top rod 203. A stop rod 208 is slidably connected in the groove 209. The two ends of the stop rod 208 are located on the top of the two rotating plates 210. A pull rod 207 is fixedly installed at the bottom of the stop rod 208. The bottom of the pull rod 207 moves through the top rod 203 and the top block 205 and extends to the outside. An iron block 206 is installed at the outer end of the pull rod 207. A magnet 103 is installed on the inner wall of the movable sleeve 102. The position of the magnet 103 corresponds to the position of the iron block 206. In this setup, when the oil delivery arm needs to be disconnected, the hydraulic cylinder 101 is retracted, and the hydraulic cylinder 101 pulls the moving sleeve 102 down. The moving sleeve 102 is attracted by the magnetic force of the magnet 103 to the iron block 206, causing it to descend. The iron block 206 drives the stop rod 208 down through the pull rod 207. The stop rod 208 pushes the rotating plate 210 down, and the rotating plate 210 abuts against the locking block 500 and moves it to one side, so that the baffle 204 can descend and disengage from the upper mounting ring 302 through the round hole 303.

[0055] like Figures 1 to 8 As shown, further, a locking block 500 is provided on the top of the upper mounting ring 302 outside the circular hole 303. The cross-sectional shape of the locking block 500 is an inverted trapezoid. Two sliding rods 501 are installed on one end of the locking block 500. A fixing cylinder 503 is movably sleeved on the upper part of each sliding rod 501. The bottom of the fixing cylinder 503 is fixedly installed on the top of the upper mounting ring 302. A first spring 502 is movably sleeved on the sliding rod 501. The two ends of the first spring 502 are respectively fixedly installed on one end of the locking block 500 and one end of the fixing cylinder 503. In this configuration, the baffle 204 abuts against the locking block 500 during movement and moves it to one side. When the baffle 204 and the locking block 500 are misaligned, the elastic force of the first spring 502 drives the locking block 500 to reset, thereby locking the baffle 204 and fixing the oil inlet pipe 100.

[0056] The implementation principle of an automatic oil delivery arm docking system in this embodiment is as follows: When docking the oil delivery arm, the upper insertion pipe 300, lower insertion pipe 301, and upper mounting ring 302 are lowered as a whole, and the bottom of the upper mounting ring 302 abuts against the top of the baffle 204. At this time, the hydraulic cylinder 101 is activated, and the hydraulic cylinder 101 drives the moving sleeve 102 to rise. During the rise, the moving sleeve 102 abuts against the first pull plate 104 and rotates it. The first pull plate 104 drives the sleeve 106 to move, and at the same time, the second... Pull plate 105 and first pull plate 104 are of the same length and parallel to each other, allowing sleeve 106 to move in parallel. Multiple sleeves 106 move, driving push rod 203 to move. Push rod 203 drives baffle 204 to move, thereby pushing the bottom of lower insertion tube 301 towards the center of oil inlet tube 100. During movement, baffle 204 drives upper mounting ring 302 to rotate via guide plate 304, causing the circular hole 303 to rotate to a position opposite to baffle 204. At this time, hydraulic cylinder 101 continues... The movable sleeve 102 is moved, and the magnet 103 on the inner wall of the movable sleeve 102 abuts against the iron block 206. The iron block 206 abuts against the top block 205. The top block 205 drives the baffle 204 to rise through the push rod 203. The baffle 204 abuts against the first push rod 401, causing it to rise. The first push rod 401 compresses the hydraulic oil in the connecting cavity 400 through the piston 403, and drives the second push rod 402 to move down. The second push rod 402 drives the upper mounting ring 302 to fall, thereby driving the lower insertion tube 301 to fall and connect with the upper mounting ring 302. The oil inlet pipe 100 is connected to the lower mounting ring 200. When the lower insertion pipe 301 moves, it drives the sealing ring 603 to descend, thereby separating the sealing ring 603 from the sealing block 602. At this time, the passage between the upper insertion pipe 300 and the lower insertion pipe 301 is opened. During the movement of the baffle 204, it abuts against the locking block 500 and moves it to one side. When the baffle 204 and the locking block 500 are misaligned, the elastic force of the first spring 502 drives the locking block 500 to reset, thereby locking the baffle 204 and fixing the oil inlet pipe 100.

[0057] When the oil delivery arm needs to be disconnected, the hydraulic cylinder 101 is retracted, which pulls the moving sleeve 102 down. The moving sleeve 102 is attracted by the magnetic force of the magnet 103 to the iron block 206, causing it to descend. The iron block 206 drives the stop rod 208 down through the pull rod 207. The stop rod 208 pushes the rotating plate 210 down, and the rotating plate 210 abuts against the locking block 500 and moves it to one side, so that the baffle 204 can descend and disengage from the upper mounting ring 302 through the round hole 303. At this time, the elastic force of the second spring 605 drives the limiting block 606 to move up, and drives the sealing ring 603 and the lower insertion tube 301 to move up through the limiting rod 604. The sealing ring 603 cooperates with the sealing block 602, thereby closing the passage between the upper insertion tube 300 and the lower insertion tube 301.

Claims

1. An automatic docking system for an oil delivery arm, comprising an inlet pipe (100) and a lower insertion pipe (301), characterized in that, An automatic docking mechanism is provided at the top of the oil inlet pipe (100). The automatic docking mechanism includes a lower mounting ring (200). The inner wall of the lower mounting ring (200) is fixedly sleeved on the top of the oil inlet pipe (100). Multiple equally spaced sliding grooves (201) are provided on the lower mounting ring (200). A push rod (203) is slidably connected in each of the sliding grooves (201). A sleeve (106) is movably sleeved on the outside of the push rod (203). A drive mechanism is provided on the outside of the oil inlet pipe (100). The drive mechanism includes a hydraulic cylinder (101). Two hydraulic cylinders (101) are symmetrically distributed and fixedly installed on both sides of the oil inlet pipe (100). A movable sleeve (102) is fixedly installed on the top of the two hydraulic cylinders (101). The movable sleeve (102) is located at the bottom of the sleeve (106). The upper tube (300) is movably inserted into the top of the lower tube (301), and the upper mounting ring (302) is rotatably sleeved at the bottom of the lower tube (301). The cross-sectional shape and size of the upper mounting ring (302) are adapted to the lower mounting ring (200). Each of the sleeves (106) is rotatably connected to two sides by a symmetrically distributed first pull plate (104) and second pull plate (105). The distance between the two ends of the first pull plate (104) and the second pull plate (105) is matched. The directions of the first pull plate (104) and the second pull plate (105) are parallel to each other. The other ends of the first pull plate (104) and the second pull plate (105) are rotatably connected to the side of the oil inlet pipe (100). The first pull plate (104) is located at the bottom of the second pull plate (105) and the first pull plate (104) is located at the top of the movable sleeve (102). The upper mounting ring (302) has multiple circular holes (303), the number and position of which are adapted to the top rod (203). A guide plate (304) is installed at the bottom of the upper mounting ring (302) between two adjacent circular holes (303). The cross-sectional shape of the guide plate (304) is V-shaped, and the two ends of the guide plate (304) are tangent to the edges of the circular holes (303) on both sides. The top of the lower mounting ring (200) has multiple fitting grooves (202), which are adapted to the guide plate (304). A first push rod (401) is provided at the top of the upper mounting ring (302) relative to the circular hole (303). A second push rod (402) is provided between two adjacent first push rods (401). The bottom of the second push rod (402) is fixedly installed on the top of the upper mounting ring (302). A piston (403) is fixedly installed on the top of both the first push rod (401) and the second push rod (402). A connecting cavity (400) is movably sleeved on the outside of the piston (403). The connecting cavity (400) is filled with hydraulic oil. The connecting cavity (400) is rotatably sleeved on the outside of the upper insertion tube (300).

2. The automatic docking system for an oil delivery arm according to claim 1, characterized in that, A support plate (600) is fixedly installed inside the upper insertion tube (300). The cross-sectional shape of the support plate (600) is cross-shaped, and a support rod (601) is fixedly installed at the bottom of the support plate (600). A sealing block (602) is fixedly installed at the bottom of the support rod (601). The cross-sectional shape of the sealing block (602) is frustum-shaped.

3. The automatic docking system for an oil delivery arm according to claim 1, characterized in that, The inner wall of the lower insertion tube (301) is fitted with a sealing ring (603), the shape of which is adapted to the sealing block (602). The top of the sealing ring (603) is fitted with a plurality of equally spaced limiting rods (604). The outer side of the limiting rod (604) is movably sleeved with a positioning cylinder (607). One side of the positioning cylinder (607) is fixedly installed on the inner wall of the upper insertion tube (300). The top of the limiting rod (604) is fixedly installed with a limiting block (606). A second spring (605) is movably sleeved on the limiting rod (604). The two ends of the second spring (605) are respectively fixedly installed at the bottom of the limiting block (606) and the top of the positioning cylinder (607).

4. The automatic docking system for an oil delivery arm according to claim 1, characterized in that, A baffle (204) is installed on the top of the top rod (203). The cross-sectional shape and size of the baffle (204) are adapted to the circular hole (303). Rotating plates (210) are rotatably connected to the bottom sides of the baffle (204). The rotating plates (210) are located on both sides of the top rod (203). A torsion spring (211) is installed at the connection between the rotating plate (210) and the baffle (204). A top block (205) is fixedly installed at the bottom of the top rod (203).

5. The automatic docking system for an oil delivery arm according to claim 4, characterized in that, The top of the top rod (203) has grooves (209) on both sides. A stop rod (208) is slidably connected in the groove (209). The two ends of the stop rod (208) are located on the top of the two rotating plates (210). A pull rod (207) is fixedly installed at the bottom of the stop rod (208). The bottom of the pull rod (207) moves through the top rod (203) and the top block (205) and extends to the outside. An iron block (206) is installed at the outer end of the pull rod (207). A magnet (103) is installed on the inner wall of the movable sleeve (102). The position of the magnet (103) corresponds to the position of the iron block (206).

6. The automatic docking system for an oil delivery arm according to claim 1, characterized in that, The top of the upper mounting ring (302) is provided with a locking block (500) outside the circular hole (303). The cross-sectional shape of the locking block (500) is an inverted trapezoid. Two sliding rods (501) are installed at one end of the locking block (500). A fixing cylinder (503) is movably sleeved on the upper part of each of the two sliding rods (501). The bottom of the fixing cylinder (503) is fixedly installed on the top of the upper mounting ring (302). A first spring (502) is movably sleeved on the sliding rod (501). The two ends of the first spring (502) are respectively fixedly installed on one end of the locking block (500) and one end of the fixing cylinder (503).

7. A method of using an automatic docking system for oil delivery arms, characterized in that, The steps of using the automatic oil transfer arm docking system according to any one of claims 1 to 6 are as follows: S1. When docking the oil delivery arm, lower the upper insertion pipe (300), lower insertion pipe (301) and upper mounting ring (302) as a whole, and make the bottom of the upper mounting ring (302) abut against the top of the baffle (204). At this time, start the hydraulic cylinder (101). The hydraulic cylinder (101) drives the moving sleeve (102) to rise. During the rise of the moving sleeve (102), it abuts against the first pull plate (104) and makes it rotate. The first pull plate (104) drives the sleeve (106) to move. At the same time, the second pull plate (105) is the same length as the first pull plate (104) and is parallel to each other, so that the sleeve (106) can move in parallel. S2. Multiple sleeves (106) move and drive the push rod (203) to move. The push rod (203) drives the baffle (204) to move, thereby pushing the bottom of the lower insertion tube (301) towards the center of the oil inlet tube (100). During the movement, the baffle (204) drives the upper mounting ring (302) to rotate through the guide plate (304), and rotates the position of the round hole (303) to the position opposite to the baffle (204). S3. The hydraulic cylinder (101) continues to drive the moving sleeve (102) to move. The magnet (103) on the inner wall of the moving sleeve (102) abuts against the iron block (206). The iron block (206) abuts against the top block (205). The top block (205) drives the baffle (204) to rise through the push rod (203). The baffle (204) abuts against the first push rod (401) to make it rise. The first push rod (401) compresses the hydraulic oil in the connecting cavity (400) through the piston (403) and drives the second push rod (402) to move down. The second push rod (402) drives the upper mounting ring (302) to fall down, thereby driving the lower insertion tube (301) to fall down and connect with the oil inlet pipe (100) and the lower mounting ring (200). S4. When the lower insertion tube (301) moves, it drives the sealing ring (603) to descend, thereby separating the sealing ring (603) from the sealing block (602). At this time, the passage of the upper insertion tube (300) and the lower insertion tube (301) is opened. During the movement of the baffle (204), it abuts against the locking block (500) and moves it to one side. When the baffle (204) and the locking block (500) are misaligned, the elastic force of the first spring (502) drives the locking block (500) to reset, thereby locking the baffle (204) and fixing the oil inlet pipe (100). S5. When the oil delivery arm needs to be disconnected, retract the hydraulic cylinder (101). The hydraulic cylinder (101) pulls the moving sleeve (102) down. The moving sleeve (102) is attracted to the iron block (206) by the magnetic force of the magnet (103), causing it to descend. The iron block (206) drives the stop lever (208) down through the pull rod (207). The stop lever (208) pushes the rotating plate (210) down. The rotating plate (210) abuts against the locking block (500), and... Move it to one side so that the baffle (204) can descend and disengage from the upper mounting ring (302) through the round hole (303). At this time, the elastic force of the second spring (605) drives the limiting block (606) to move upward, and drives the sealing ring (603) and the lower insertion tube (301) to move upward through the limiting rod (604). The sealing ring (603) cooperates with the sealing block (602) so that the passage between the upper insertion tube (300) and the lower insertion tube (301) is closed.

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