A swivel lock mechanism

Abstract

The present application relates to the technical field of the swivel, and discloses a swivel sealing cap locking mechanism, which comprises a polishing pipe, a vertical pipe and a sealing cover, the polishing pipe and the vertical pipe are connected through bolts, the sealing cover is sleeved on the vertical pipe, a wall portion of the vertical pipe is fixedly provided with a support plate, a top portion of the sealing cover is fixedly provided with two guide columns in parallel, the top portion of the guide column penetrates through the support plate and is provided with an external step, a spring is sleeved on the guide column, one end of the spring is in contact with the bottom portion of the support plate, the other end of the spring is in contact with the top portion of the sealing cover, the sealing cover is a circular ring shell, a containing groove is formed in the inner ring surface of the bottom portion of the sealing cover, and a sealing ring is arranged at the center of the bottom portion of the sealing cover, the vertical pipe is moved downward, the lower segment of the vertical pipe is inserted into a target tank opening, then the sealing ring is in contact with the target tank opening to seal, the vertical pipe continues to move downward, a clamping jaw is driven to deflect, when the clamping jaw deflects, the clamping jaw is in contact with the edge of the target tank opening, so that the target tank opening is locked.

Description

Technical Field

[0001] This invention relates to the field of loading arm technology, and more specifically to a locking mechanism for a loading arm sealing cap. Background Technology

[0002] Existing oil loading locking devices consist of an inner arm elbow, locking rod, guide sleeve, locking wrench, and outer arm of the loading arm. In use, the sealing cover is placed on the tanker opening, and the operator moves to the junction of the inner and outer arms, pulls the outer arm, and rotates the locking wrench. The sealing cover is indirectly locked through the loading arm, the rotary joint, and the outer arm. This locking device is cumbersome to operate, intermittent in operation, and has poor sealing performance. Therefore, it cannot completely control the leakage of small amounts of volatile, flammable, and explosive oils and other chemicals, leading to atmospheric pollution or fire and explosion hazards. Therefore, a new loading arm sealing cap locking mechanism is needed. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a locking mechanism for the sealing cap of an arm.

[0004] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows.

[0005] A locking mechanism for a loading arm sealing cap, comprising:

[0006] The system comprises a polishing tube, a vertical tube, and a sealing cover. The polishing tube and the vertical tube are connected by bolts. The sealing cover is fitted onto the vertical tube. A support plate is fixedly installed on the wall of the vertical tube. Two guide posts are vertically fixed on the top of the sealing cover and are arranged in parallel. The top of the guide posts passes through the support plate and has an external step. A spring is fitted on the guide post. One end of the spring contacts the bottom of the support plate, and the other end contacts the top of the sealing cover. The sealing cover is a circular shell. A receiving groove is opened on the inner ring surface of the bottom of the sealing cover. A sealing ring is set at the center of the bottom of the sealing cover and is located at the bottom of the receiving groove. A connecting post is vertically installed on the top of the sealing ring. A connecting sleeve is vertically installed at the bottom of the receiving groove of the sealing cover. The connecting post is fitted into the connecting sleeve. A second spring is fitted on the connecting post and the connecting sleeve. One end of the second spring is connected to the top of the sealing ring, and the other end of the second spring is connected to the bottom of the receiving groove. A locking mechanism is installed inside the sealing cover and is located at the bottom of the sealing cover.

[0007] As a further improvement to this technical solution, multiple locking mechanisms are provided and evenly surround the bottom of the sealing cover. The locking mechanism includes a support rod, a connecting rod, a mounting plate, and a locking assembly. An clearance opening is provided on the inner ring surface of the sealing cover. One end of the support rod is fixedly connected to the wall of the vertical tube, and the other end extends horizontally through the clearance opening on the inner ring surface of the sealing cover. The connecting rod is vertically fixedly connected to the end of the support rod, and a rack is connected to the bottom of the connecting rod. The mounting plate is fixed to the inner wall of the outer ring surface of the sealing cover, and the locking assembly is installed on the mounting plate. The locking assembly and the connecting rod are engaged in a transmission cooperation.

[0008] As a further improvement to this technical solution, the locking assembly includes a worm, a gear, a worm wheel, and a pawl. The worm is rotatably mounted on one side of the mounting plate. The gear is coaxially fixedly sleeved on the end of the worm and meshes with the rack. The worm wheel is rotatably mounted on the wall of the mounting plate and meshes with the worm. The pawl is rotatably mounted on the wall of the mounting plate, and the circumferential end of the pawl is coaxially connected to the worm wheel. A clearance groove is provided at the bottom of the sealing cover, and the end of the pawl passes through the clearance groove at the bottom of the sealing cover.

[0009] As a further improvement to this technical solution, the sealing ring is a circular shell, and an exhaust assembly is provided inside the sealing cover. The exhaust assembly includes a support plate, an air storage cylinder, a piston, a top column, and a connecting pipe. The support plate is fixed inside the sealing cover, and the air storage cylinder is fixed inside the sealing cover. The air storage cylinder is a cylindrical structure with a closed top and an open bottom. The piston is matched inside the air storage cylinder. The top of the top column is fixedly connected to the bottom of the piston. The bottom of the top column passes through the support plate and the bottom of the sealing cover. A spring is sleeved on the top column. One end of the spring contacts the bottom of the support plate, and the other end of the spring contacts the bottom of the sealing cover. The top of the air storage cylinder and the sealing ring are connected through the connecting pipe.

[0010] As a further improvement to this technical solution, an exhaust hole is provided on the bottom circumference of the sealing ring, and an exhaust hole is provided on the circumference of the sealing ring.

[0011] As a further improvement to this technical solution, a striking assembly is provided on the side wall of the mounting plate. The striking assembly includes a push plate, a striking rod, a trigger rod, and an elastic telescopic rod. The push plate is located on one side of the end of the mounting plate. The push plate is connected to the side wall of the mounting plate through the elastic telescopic rod. One end of the striking rod is fixedly connected to the push plate, and the other end of the striking rod is close to the wall of the vertical tube. A protrusion is fixedly provided on the wall of the connecting rod. Multiple protrusions are provided and evenly spaced. The trigger rod is horizontally fixedly connected to the top of the push plate. The trigger rod is close to the connecting rod and located between two adjacent protrusions.

[0012] As a further improvement to this technical solution, the sealing ring is a rubber ring.

[0013] Compared with the prior art, the progress and advantages of this invention are as follows: during the use of this invention, the vertical tube moves down and the lower section of the vertical tube extends into the target can opening. Then, the sealing ring contacts and seals the target can opening. The vertical tube continues to move down, driving the chuck to deflect. When the chuck deflects, the chuck abuts against the edge of the target can opening, thereby locking the target can opening. The locking state of the target can opening can be guaranteed without additional driving force, saving energy and improving efficiency and safety.

[0014] During the downward movement of the vertical tube, the target tank opening comes into contact with the top column, thereby pushing the top column upward, which in turn pushes the piston upward, thus discharging the gas in the gas storage tank into the sealing ring through the connecting pipe, and then discharging it through the exhaust hole of the sealing ring. At this time, the sealing ring is close to the target tank opening, and the gas discharged through the exhaust hole of the sealing ring blows towards the edge of the target tank opening, thereby blowing away impurities at the edge of the target tank opening and improving the sealing performance between the sealing ring and the edge of the target tank opening.

[0015] During the downward movement of the connecting rod, the protrusion can reciprocate against the push plate, thereby driving the striking rod to strike the wall of the vertical tube, which is beneficial for the lower section of the vertical tube to extend into the target tank opening and also facilitates the drainage of liquid in the vertical tube. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments of the present invention will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the connection between the sealing cover and the vertical pipe of the present invention.

[0019] Figure 3 This is a schematic diagram of the interior of the sealing cover of the present invention.

[0020] Figure 4 This is a schematic diagram of the exhaust assembly and sealing ring of the present invention.

[0021] Figure 5 This is a schematic diagram of the sealing ring installation according to the present invention.

[0022] Figure 6 This is a schematic diagram of the locking mechanism of the present invention.

[0023] Figure 7 This is a schematic diagram of the installation of the striking component of the present invention.

[0024] Figure 8This is a schematic diagram of the locking assembly of the present invention.

[0025] Figure 9 This is a schematic diagram of the striking component and connecting rod of the present invention.

[0026] The diagram indicates:

[0027] 10. Polishing tube;

[0028] 20. Vertical tube; 210. Support plate; 220. Guide post one;

[0029] 30. Sealing cover; 310. Sealing ring; 311. Exhaust port; 312. Connecting column; 313. Connecting sleeve; 320. Exhaust assembly; 321. Support plate; 322. Air tank; 323. Piston; 324. Top column; 325. Connecting pipe; 330. Receiving groove; 340. Clearance groove;

[0030] 40. Locking mechanism; 410. Support rod; 420. Connecting rod; 421. Protrusion; 422. Rack; 430. Mounting plate; 440. Locking assembly; 441. Worm gear; 442. Gear; 443. Worm wheel; 444. Claw; 450. Striking assembly; 451. Push plate; 452. Striking rod; 453. Trigger rod; 454. Elastic telescopic rod. Detailed Implementation

[0031] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0033] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing the present invention 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 positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0034] In the description of this invention, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] like Figures 1-9 As shown, a locking mechanism for a loading arm sealing cap includes:

[0036] The system comprises a polishing tube 10, a vertical tube 20, and a sealing cover 30. The polishing tube 10 and the vertical tube 20 are connected by bolts. The sealing cover 30 is fitted onto the vertical tube 20. A support plate 210 is fixedly installed on the wall of the vertical tube 20. Two guide posts 220 are vertically fixed on the top of the sealing cover 30 and are arranged in parallel. The top of the guide posts 220 passes through the support plate 210 and has an external step. A spring is fitted onto the guide posts 220. One end of the spring contacts the bottom of the support plate 210, and the other end contacts the top of the sealing cover 30. The sealing cover 30 is an annular shell. A receiving groove 330 is formed on the inner annular surface of the bottom of the sealing cover 30. A sealing ring 310 is provided at the center of the bottom of the sealing cover 30. The sealing ring 310 is located at the bottom of the receiving groove 330 of the sealing cover 30. A connecting post 312 is vertically arranged on the top of the sealing ring 310. A connecting sleeve 313 is vertically arranged at the bottom of the receiving groove 330 of the sealing cover 30. The connecting post 312 is fitted inside the connecting sleeve 313. A second spring is fitted on the connecting post 312 and the connecting sleeve 313. One end of the second spring is connected to the top of the sealing ring 310, and the other end of the second spring is connected to the bottom of the receiving groove 330. A locking mechanism 40 is provided inside the sealing cover 30. The locking mechanism 40 is located at the bottom of the sealing cover 30. The vertical tube 20 moves down and the lower section of the vertical tube 20 extends into the target can opening. Then the sealing ring 310 contacts and seals with the target can opening. Then the locking mechanism 40 locks the target can opening.

[0037] More specifically, the locking mechanism 40 is provided in multiple sets and evenly surrounds the bottom of the sealing cover 30. The locking mechanism 40 includes a support rod 410, a connecting rod 420, a mounting plate 430, and a locking assembly 440. An avoidance opening is provided on the inner ring surface of the sealing cover 30. One end of the support rod 410 is fixedly connected to the wall of the vertical tube 20, and the other end extends horizontally through the avoidance opening on the inner ring surface of the sealing cover 30. The connecting rod 420 is vertically fixedly connected to the end of the support rod 410. A rack 422 is connected to the bottom of the connecting rod 420. The mounting plate 430 is fixed to the inner wall of the outer ring surface of the sealing cover 30. The locking assembly 440 is installed on the mounting plate 430, and the locking assembly 440 and the connecting rod 420 are in a transmission engagement.

[0038] More specifically, the locking assembly 440 includes a worm 441, a gear 442, a worm wheel 443, and a pawl 444. The worm 441 is rotatably mounted on one side of the mounting plate 430. The gear 442 is coaxially fixedly sleeved on the end of the worm 441 and meshes with a rack 422. The worm wheel 443 is rotatably mounted on the wall of the mounting plate 430 and meshes with the worm 441. The pawl 444 is rotatably mounted on the wall of the mounting plate 430, and its circumferential end is coaxially connected to the worm wheel 443. A clearance groove 340 is provided at the bottom of the sealing cover 30. The end of 4 passes through the relief groove 340 at the bottom of the sealing cover 30. The vertical tube 20 moves down and the lower section of the vertical tube 20 extends into the target can opening. Then, the sealing ring 310 contacts and seals with the target can opening. The sealing ring 310 extends into the receiving groove 330. Then, the vertical tube 20 continues to move down, thereby driving the support rod 410 and the connecting rod 420 to move down. Then, the rack 422 drives the gear 442 to rotate, thereby driving the worm 441 and the worm wheel 443 to rotate. Then, the pawl 444 is deflected. When the pawl 444 deflects, the pawl 444 abuts against the edge of the target can opening, thereby locking the target can opening.

[0039] like Figures 3-5 As shown, the sealing ring 310 is a circular shell, and the sealing cover 30 is provided with an exhaust assembly 320. The exhaust assembly 320 includes a support plate 321, an air storage cylinder 322, a piston 323, a top column 324, and a connecting pipe 325. The support plate 321 is fixed inside the sealing cover 30, and the air storage cylinder 322 is fixed inside the sealing cover 30. The air storage cylinder 322 is a cylindrical structure with a closed top and an open bottom. The piston 323 is matched inside the air storage cylinder 322. The top of the top column 324 is fixedly connected to the bottom of the piston 323. The bottom of the top column 324 passes through the support plate 321 and the bottom of the sealing cover 30. A spring 3 is sleeved on the top column 324. One end of the spring 3 contacts the bottom of the support plate 321, and the other end of the spring 3 contacts the bottom of the sealing cover 30. The top of the air storage cylinder 322 and the sealing ring 310 are connected by the connecting pipe 325.

[0040] More specifically, the sealing ring 310 has an exhaust hole 311 on its bottom circumference. During the downward movement of the vertical tube 20, the target can opening comes into contact with the top column 324, thereby pushing the top column 324 upward, and then pushing the piston 323 upward, thereby discharging the gas in the gas storage cylinder 322 into the sealing ring 310 through the connecting pipe 325, and then discharging it through the exhaust hole 311 of the sealing ring 310. At this time, the sealing ring 310 is close to the target can opening, and the gas discharged through the exhaust hole 311 of the sealing ring 310 blows towards the edge of the target can opening, thereby blowing away impurities on the edge of the target can opening, thereby improving the sealing performance between the sealing ring 310 and the edge of the target can opening.

[0041] like Figures 7-9 As shown, a striking assembly 450 is provided on the side wall of the mounting plate 430. The striking assembly 450 includes a push plate 451, a striking rod 452, a trigger rod 453, and an elastic telescopic rod 454. The push plate 451 is located on one side of the end of the mounting plate 430. The push plate 451 is connected to the side wall of the mounting plate 430 by the elastic telescopic rod 454. One end of the striking rod 452 is fixedly connected to the push plate 451, and the other end of the striking rod 452 is close to the wall of the vertical tube 20. A connecting rod 420 is fixedly provided on the wall. The protrusions 421 are arranged in multiple evenly spaced positions. The trigger rod 453 is horizontally fixed to the top of the push plate 451. The trigger rod 453 is close to the connecting rod 420 and is located between two adjacent protrusions 421. During the downward movement of the connecting rod 420, the protrusions 421 can reciprocate against the push plate 451, thereby driving the striking rod 452 to strike the wall of the vertical tube 20. This facilitates the lower section of the vertical tube 20 to extend into the target tank opening and also facilitates the drainage of liquid in the vertical tube 20.

[0042] More specifically, the sealing ring 310 is a rubber ring.

[0043] Working principle:

[0044] In use, the vertical tube 20 moves downward, with its lower section extending into the target can opening. Then, the sealing ring 310 contacts and seals the target can opening, extending into the receiving groove 330. The vertical tube 20 continues to move downward, causing the support rod 410 and connecting rod 420 to move downward as well. The rack 422 then drives the gear 442 to rotate, which in turn drives the worm gear 441 and worm wheel 443 to rotate. This causes the pawl 444 to deflect, contacting the edge of the target can opening and locking it in place. During the downward movement of the vertical tube 20, the target can opening contacts the top column 324, pushing the top column 324 upward, which in turn pushes the piston 323. The gas in the gas storage cylinder 322 is moved upward, and then discharged into the sealing ring 310 through the connecting pipe 325. The gas is then discharged through the vent hole 311 of the sealing ring 310. At this time, the sealing ring 310 is close to the target tank opening. The gas discharged through the vent hole 311 of the sealing ring 310 is blown towards the edge of the target tank opening, thereby blowing away impurities at the edge of the target tank opening and improving the sealing performance between the sealing ring 310 and the edge of the target tank opening. During the downward movement of the connecting rod 420, the protrusion 421 can reciprocate against the push plate 451, thereby driving the striking rod 452 to strike the wall of the vertical tube 20. This facilitates the lower section of the vertical tube 20 to extend into the target tank opening and also facilitates the drainage of liquid in the vertical tube 20.

[0045] It should be stated that the above-described specific embodiments are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to the present invention. However, such variations, as long as they do not depart from the spirit of the present invention, should be within the scope of protection of the present invention. Furthermore, some terminology used in this specification and claims is not limiting, but merely for ease of description.

Claims

1. A locking mechanism for a loading arm sealing cap, characterized in that, It includes: The system comprises a polishing tube, a vertical tube, and a sealing cover. The polishing tube and the vertical tube are connected by bolts. The sealing cover is fitted onto the vertical tube. A support plate is fixedly installed on the wall of the vertical tube. Two guide posts are vertically fixed on the top of the sealing cover and are arranged in parallel. The top of the guide posts passes through the support plate and has an external step. A spring is fitted on the guide post. One end of the spring contacts the bottom of the support plate, and the other end of the spring contacts the top of the sealing cover. The sealing cover is a circular shell. A receiving groove is opened on the inner ring surface of the bottom of the sealing cover. A sealing ring is set at the center of the bottom of the sealing cover. The sealing ring is located at the bottom of the receiving groove of the sealing cover. A connecting post is vertically installed on the top of the sealing ring. A connecting sleeve is vertically installed at the bottom of the receiving groove of the sealing cover. The connecting post is fitted into the connecting sleeve. A second spring is fitted on the connecting post and the connecting sleeve. One end of the second spring is connected to the top of the sealing ring, and the other end of the second spring is connected to the bottom of the receiving groove. A locking mechanism is set inside the sealing cover and is located at the bottom of the sealing cover. Multiple locking mechanisms are provided and evenly surround the bottom of the sealing cover. The locking mechanism includes a support rod, a connecting rod, a mounting plate, and a locking assembly. An clearance opening is provided on the inner ring surface of the sealing cover. One end of the support rod is fixedly connected to the wall of the vertical tube, and the other end extends horizontally through the clearance opening on the inner ring surface of the sealing cover. The connecting rod is vertically fixedly connected to the end of the support rod. A rack is connected to the bottom of the connecting rod. The mounting plate is fixed to the inner wall of the outer ring surface of the sealing cover. The locking assembly is installed on the mounting plate, and there is a transmission engagement between the locking assembly and the connecting rod. The locking assembly includes a worm, a gear, a worm wheel, and a pawl. The worm is rotatably mounted on one side of the mounting plate. The gear is coaxially fixedly sleeved on the end of the worm and meshes with a rack. The worm wheel is rotatably mounted on the wall of the mounting plate and meshes with the worm. The pawl is rotatably mounted on the wall of the mounting plate, and the circumferential end of the pawl is coaxially connected to the worm wheel. A clearance groove is provided at the bottom of the sealing cover, and the end of the pawl passes through the clearance groove at the bottom of the sealing cover.

2. The locking mechanism for the sealing cap of an arm-mounted loading arm according to claim 1, characterized in that, The sealing ring is a circular shell, and an exhaust assembly is installed inside the sealing cover. The exhaust assembly includes a support plate, an air storage cylinder, a piston, a top column, and a connecting pipe. The support plate is fixed inside the sealing cover, and the air storage cylinder is fixed inside the sealing cover. The air storage cylinder is a cylindrical structure with a closed top and an open bottom. The piston is matched inside the air storage cylinder. The top of the top column is fixedly connected to the bottom of the piston. The bottom of the top column passes through the bottom of the support plate and the sealing cover. A spring is sleeved on the top column. One end of the spring contacts the bottom of the support plate, and the other end of the spring contacts the bottom of the sealing cover. The top of the air storage cylinder and the sealing ring are connected by a connecting pipe.

3. The locking mechanism for the sealing cap of an arm-mounted loading arm according to claim 2, characterized in that, The sealing ring has an exhaust hole on its bottom circumference and an exhaust hole on its circumference.

4. The locking mechanism for the sealing cap of an arm-loading device according to claim 1, characterized in that, A striking assembly is provided on the side wall of the mounting plate. The striking assembly includes a push plate, a striking rod, a trigger rod, and a flexible telescopic rod. The push plate is located on one side of the end of the mounting plate. The push plate is connected to the side wall of the mounting plate by the flexible telescopic rod. One end of the striking rod is fixedly connected to the push plate, and the other end of the striking rod is close to the wall of the vertical tube. A protrusion is fixedly provided on the wall of the connecting rod. Multiple protrusions are provided and evenly spaced. The trigger rod is horizontally fixedly connected to the top of the push plate. The trigger rod is close to the connecting rod and is located between two adjacent protrusions.

5. The locking mechanism for the sealing cap of an arm-loading device according to claim 2, characterized in that, The sealing ring is a rubber ring.

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