CN111550623A - Quick joint for loading and unloading arm - Google Patents
Quick joint for loading and unloading arm Download PDFInfo
- Publication number
- CN111550623A CN111550623A CN202010507662.3A CN202010507662A CN111550623A CN 111550623 A CN111550623 A CN 111550623A CN 202010507662 A CN202010507662 A CN 202010507662A CN 111550623 A CN111550623 A CN 111550623A
- Authority
- CN
- China
- Prior art keywords
- ring
- clamping jaw
- rotary
- hinged
- mandrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/036—Flanged joints the flanges being connected by members tensioned axially characterised by the tensioning members, e.g. specially adapted bolts or C-clamps
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Quick-operation joint for loading and unloading arm relates to cryogenic fluid conveyor technical field, especially a quick-operation joint for LNG low temperature loading and unloading arm. Two ends of the main pipeline are respectively connected with the flange plates, and the main pipeline is respectively provided with a swing mechanism and a clamping mechanism; the slewing mechanism comprises a fixed ring, a slewing ring and a hydraulic cylinder; one end of a piston rod of the hydraulic cylinder is hinged with the fixed ring, and one end of a cylinder body of the hydraulic cylinder is hinged with the rotary ring; the clamping mechanism comprises an inner clamping jaw and an outer clamping jaw, the lower ends of the inner clamping jaw and the outer clamping jaw are coaxially hinged with an outer arm of the main body pipeline, the inner clamping jaw is located at the inner end of the outer clamping jaw, the inner end of the outer clamping jaw is fixedly connected with the outer end of the mandrel, the inner end of the mandrel is hinged with the outer end of the inner clamping jaw, a compression spring is sleeved on the outer side of the mandrel, and one end of the compression spring is connected with the inner clamping jaw. The outer clamping jaw is connected with the inner clamping jaw through a compression spring, and the force generated by the compression spring always vertically acts on the outer arm of the inner clamping jaw, so that the inner clamping jaw can generate enough pressing force.
Description
Technical Field
The invention relates to the technical field of cryogenic fluid conveying devices, in particular to a quick joint for an LNG (liquefied natural gas) low-temperature loading and unloading arm.
Background
The loading and unloading arm of the natural gas transport ship needs to be connected with a ground pipeline by using a connector, and most of the existing connectors adopt a hydraulic motor or a hydraulic cylinder to drive clamping jaws to realize quick connection. The claw of the existing quick connecting device is directly connected with the rotary mechanism through the spring pressing mechanism, and because the spring in the spring pressing mechanism is connected with the claw at a certain angle, only a small part of the elastic force generated by the spring pressing mechanism acts on the claw, so that pressing force is possibly insufficient.
Disclosure of Invention
The invention aims to provide a quick joint for a loading and unloading arm to achieve the purpose of enhancing the clamping force of clamping jaws aiming at the defects of the prior art.
The invention provides a quick connector for a loading arm, which is characterized in that: the pipeline clamping device comprises a main pipeline, a swing mechanism and a clamping mechanism, wherein two ends of the main pipeline are respectively connected with a flange plate, and the swing mechanism and the clamping mechanism are respectively arranged on the main pipeline; the slewing mechanism comprises a fixed ring, a slewing ring and a hydraulic cylinder; one end of a piston rod of the hydraulic cylinder is hinged with the fixed ring, and one end of a cylinder body of the hydraulic cylinder is hinged with the rotary ring; the clamping mechanism comprises an inner clamping jaw and an outer clamping jaw, the lower ends of the inner clamping jaw and the outer clamping jaw are coaxially hinged with an outer arm of the main pipeline, the inner clamping jaw is positioned at the inner end of the outer clamping jaw, the inner end of the outer clamping jaw is fixedly connected with the outer end of the mandrel, the inner end of the mandrel is hinged with the outer end of the inner clamping jaw, the mandrel is sleeved with a spring seat, the outer side of the mandrel is sleeved with a compression spring, one end of the compression spring is connected with the inner clamping jaw, and the other end of the compression; the rotary ring is provided with a plurality of fork-shaped joints, the fork-shaped joints and the outer clamping claws are arranged in a staggered mode, the lower end of the connecting rod is connected with the fork-shaped joints through joint bearings, and the upper end of the connecting rod is connected with the outer clamping claws through the joint bearings.
The end faces of the flange plates are respectively provided with an annular groove, and an annular sealing ring is arranged in the annular sliding groove.
The outer side of the flange plate, which is positioned at one end of the clamping mechanism, of the main pipeline is provided with a plurality of guide plates which are uniformly distributed in a circumferential shape, and the inner ends of the guide plates are provided with inclined planes.
The rotary connection mode of the fixing ring and the rotary ring is that the lower end of the fixing ring is connected with the sliding ring, an annular groove is arranged on the outer ring wall of the sliding ring, an annular groove is arranged on the inner ring wall of the rotary ring, the annular groove of the sliding ring corresponds to the annular groove of the rotary ring, the rotary ring is sleeved on the outer side of the sliding ring, two annular grooves form an annular cavity, and a plurality of balls are arranged in the annular cavity.
The lower end of the outer wall of the sliding ring is provided with a lower limiting ring, the upper end of the inner ring of the rotary ring is provided with an upper limiting ring, the lower limiting ring is positioned at the lower end of the rotary ring, and the upper limiting ring is positioned at the upper end of the sliding ring.
Compared with the prior art, the invention has the following outstanding beneficial effects:
the clamping device of the device comprises an inner clamping jaw and an outer clamping jaw, wherein the outer clamping jaw is connected with the inner clamping jaw through a compression spring, and the force generated by the compression spring always vertically acts on an outer arm of the inner clamping jaw, so that the inner clamping jaw can generate enough pressing force.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 1.
Detailed Description
The invention is further described with reference to the drawings and the detailed description. For convenience of description, the axial line of the main pipeline 1 is taken as an inner end, and two sides are taken as outer ends.
As shown in figures 1-3, the invention comprises a main pipeline 1, a rotary mechanism 2 and a clamping mechanism 3.
The two ends of the main pipeline 1 are fixedly connected with the flanges 102 respectively, the end faces of the two flanges 102 are provided with annular grooves respectively, annular sealing rings are installed in the annular sliding grooves, and the main pipeline 1 is provided with a swing mechanism 2 and a clamping mechanism 3 respectively.
The outer side of the flange plate 102, located at one end of the clamping mechanism 3, of the main pipeline 1 is provided with a plurality of guide plates 101 which are uniformly distributed in a circumferential mode, the inner end of each guide plate 101 is provided with an inclined surface, and the guide plates 101 can be used for centering and positioning the manifold flange of the transport ship.
The slewing mechanism 2 comprises a fixed ring 201, a slewing ring 202 and a hydraulic cylinder 207, wherein the fixed ring 201 is rotationally connected with the slewing ring 202 in a manner that: the lower end of the fixed ring 201 is fixedly connected with the sliding ring 203 through a bolt, an annular groove is formed in the outer ring wall of the sliding ring 203, an annular groove is also formed in the inner ring wall of the rotary ring 202, the cross sections of the annular grooves of the sliding ring 203 and the rotary ring 202 are semicircular, the annular groove of the sliding ring 203 and the annular groove of the rotary ring 202 are arranged correspondingly, the rotary ring 202 is sleeved on the outer side of the sliding ring 203, the two annular grooves form an annular cavity, and a plurality of balls 204 are arranged in the annular cavity.
The fixed ring 201 and the revolving ring 202 can also be coupled by bearing fit.
The lower end of the outer wall of the sliding ring 203 is provided with a lower limiting ring 206, the upper end of the inner ring of the revolving ring 202 is provided with an upper limiting ring 205, the lower limiting ring 206 is positioned at the lower end of the revolving ring 202, and the upper limiting ring 205 is positioned at the upper end of the sliding ring 203, so that the revolving ring 202 is positioned in the axial direction.
The fixed ring 201 and the revolving ring 202 are respectively provided with a support lug, one end of a piston rod of the hydraulic cylinder 207 is hinged with the support lug on the fixed ring 201, and one end of a cylinder body of the hydraulic cylinder 207 is hinged with the support lug on the revolving ring 202.
The clamping mechanism 3 comprises an inner clamping jaw 302 and an outer clamping jaw 301, a plurality of lug plates 103 which are uniformly arranged in a circumferential shape are arranged on the main pipeline 1, the lower ends of the inner clamping jaw 302 and the outer clamping jaw 301 are coaxially hinged with the lug plates 103, the inner clamping jaw 302 is positioned at the inner end of the outer clamping jaw 301, the inner end of the outer clamping jaw 301 is fixedly connected with the outer end of a mandrel 303, the inner end of the mandrel 303 is hinged with the outer end of the inner clamping jaw 302, the mandrel 303 is sleeved with a spring seat 304, a compression spring 305 is sleeved on the outer side of the mandrel 303, one end of the compression spring 305 is connected with the inner clamping jaw 302, and the other end of the compression.
The rotary ring 202 is provided with a plurality of fork-shaped joints 208 which are uniformly distributed in a circumferential shape, the number of the fork-shaped joints 208 is the same as that of the outer clamping claws 301, the fork-shaped joints 208 and the outer clamping claws 301 are arranged in a staggered mode, the lower ends of the connecting rods 5 are connected with the fork-shaped joints 208 through joint bearings 4, and the upper ends of the connecting rods are connected with the outer clamping claws 301 through the joint bearings 4.
The operation flow is as follows: when the hydraulic cylinder 207 is started, the hydraulic cylinder 207 is extended, the hydraulic cylinder 207 drives the rotary ring 202 to rotate around the fixing ring 201, the rotary ring 202 drives the outer clamping jaws 301 to rotate inwards around the joints with the lug plates 103 of the main pipeline 1 through the knuckle bearings 4 and the connecting rods 5, the outer clamping jaws 301 drive the inner clamping jaws 302 to rotate inwards around the joints with the lug plates 103 of the main pipeline 1 through the mandrels 303, when the inner clamping jaws 302 abut against a manifold flange of a transport ship, the outer clamping jaws 301 continue to rotate, the compression springs 305 are compressed, and the pressing force generated by the compression springs 305 acts on the inner clamping jaws 302, so that the inner clamping jaws 302 are pressed against the manifold flange of the transport ship.
It should be noted that while the invention has been described in detail with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various obvious changes can be made therein without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides a quick-operation joint for loading and unloading arm which characterized in that: the pipeline clamping device comprises a main pipeline (1), a rotary mechanism (2) and a clamping mechanism (3), wherein two ends of the main pipeline (1) are respectively connected with a flange plate (102), and the rotary mechanism (2) and the clamping mechanism (3) are respectively arranged on the main pipeline (1); the slewing mechanism (2) comprises a fixed ring (201), a slewing ring (202) and a hydraulic cylinder (207); one end of a piston rod of the hydraulic cylinder (207) is hinged with the fixed ring (201), and one end of a cylinder body of the hydraulic cylinder (207) is hinged with the rotary ring (202); the clamping mechanism (3) comprises an inner clamping jaw (302) and an outer clamping jaw (301), the lower ends of the inner clamping jaw (302) and the outer clamping jaw (301) are coaxially hinged with an outer arm of the main body pipeline (1), the inner clamping jaw (302) is located at the inner end of the outer clamping jaw (301), the inner end of the outer clamping jaw (301) is fixedly connected with the outer end of the mandrel (303), the inner end of the mandrel (303) is hinged with the outer end of the inner clamping jaw (302), the mandrel (303) is sleeved with a spring seat (304), a compression spring (305) is sleeved on the outer side of the mandrel (303), one end of the compression spring (305) is connected with the inner clamping jaw (302), and the other end of the compression spring (305) is connected; the rotary ring (202) is provided with a plurality of forked joints (208), the forked joints (208) and the outer clamping jaws (301) are arranged in a staggered mode, the lower end of the connecting rod (5) is connected with the forked joints (208) through the knuckle bearing (4), and the upper end of the connecting rod is connected with the outer clamping jaws (301) through the knuckle bearing (4).
2. A quick coupling for a loading arm and unloading arm according to claim 1, wherein: the end faces of the flange plates (102) are respectively provided with an annular groove, and an annular sealing ring is arranged in the annular sliding groove.
3. A quick coupling for a loading arm and unloading arm according to claim 1, wherein: the outer side of a flange plate (102) of one end of the clamping mechanism (3) of the main pipeline (1) is provided with a plurality of guide plates (101) which are uniformly distributed in a circumferential mode, and the inner end of each guide plate (101) is provided with an inclined plane.
4. A quick coupling for a loading arm and unloading arm according to claim 1, wherein: the rotary connection mode of the fixing ring (201) and the rotary ring (202) is that the lower end of the fixing ring (201) is connected with the sliding ring (203), the outer ring wall of the sliding ring (203) is provided with an annular groove, the inner ring wall of the rotary ring (202) is provided with an annular groove, the annular groove of the sliding ring (203) corresponds to the annular groove of the rotary ring (202), the rotary ring (202) is sleeved on the outer side of the sliding ring (203), the two annular grooves form an annular cavity, and a plurality of balls (204) are arranged in the annular cavity.
5. The quick coupling for a loading/unloading arm according to claim 4, wherein: the lower end of the outer wall of the sliding ring (203) is provided with a lower limiting ring (206), the upper end of the inner ring of the rotary ring (202) is provided with an upper limiting ring (205), the lower limiting ring (206) is positioned at the lower end of the rotary ring (202), and the upper limiting ring (205) is positioned at the upper end of the sliding ring (203).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010507662.3A CN111550623A (en) | 2020-06-05 | 2020-06-05 | Quick joint for loading and unloading arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010507662.3A CN111550623A (en) | 2020-06-05 | 2020-06-05 | Quick joint for loading and unloading arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111550623A true CN111550623A (en) | 2020-08-18 |
Family
ID=72002266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010507662.3A Pending CN111550623A (en) | 2020-06-05 | 2020-06-05 | Quick joint for loading and unloading arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111550623A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082019A (en) * | 2020-09-02 | 2020-12-15 | 江苏长隆石化装备有限公司 | Efficient quick connection device and method |
| CN113280197A (en) * | 2021-06-23 | 2021-08-20 | 段其辉 | Flange |
-
2020
- 2020-06-05 CN CN202010507662.3A patent/CN111550623A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082019A (en) * | 2020-09-02 | 2020-12-15 | 江苏长隆石化装备有限公司 | Efficient quick connection device and method |
| CN113280197A (en) * | 2021-06-23 | 2021-08-20 | 段其辉 | Flange |
| CN113280197B (en) * | 2021-06-23 | 2022-11-08 | 济南乾瑞锻造股份有限公司 | Flange |
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