Jacking pulley structure for LNG (Liquefied Natural Gas) storage tank

Abstract

The utility model discloses a lifting pulley structure for LNG (liquefied natural gas) storage tank, which comprises a bottom plate, a cover plate, two coamings, two rotating shafts, two pulley bodies, two support pieces and two guide pieces, the two coamings are mounted on the cover plate and the bottom plate, the two rotating shafts are mounted on the two coamings, the two pulley bodies are rotatably mounted on the two rotating shafts, and the two support pieces are mounted on the bottom plate. The two supporting pieces are installed on the two sides of the two opposite surfaces of the two surrounding plates, the two guiding pieces are installed on the two supporting pieces and arranged below the two pulley bodies, the two guiding pieces are arranged between the two pulley bodies, two through holes are formed in the lower surface of the bottom plate, and one ends of the two steel wire ropes sequentially bypass the two pulley bodies and the two guiding pieces respectively. And the through holes penetrate through the two through holes. Through the application of the jacking pulley structure for the LNG storage tank, the radius of the center pulley block can be expanded outwards through the arrangement of the supporting piece and the guiding piece, so that the number of the center pulley blocks is increased, and the jacking requirement of the vault of the LNG storage tank is met.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical industry, in particular to a lifting pulley structure for an LNG storage tank. Background Art

[0002] Safe storage is a key link in the liquefied natural gas (LNG) industry chain. As an important link in the main construction of the storage tank, the gas pressure lifting process has great risks. The balance wire rope plays an extremely important role in the balance of the arch during the lifting process. At present, during the gas pressure lifting process of the LNG storage tank, as the volume of the LNG storage tank increases, the number of balance wire ropes required to be increased accordingly also increases. Since the maximum number of pulleys in the center pulley group is limited by the aperture, it is difficult to increase the number of center pulley groups, and it is difficult to meet the needs of gas pressure lifting of the arch. Utility Model Content

[0003] In view of this, in order to solve the above problems, the purpose of the utility model is to provide a lifting pulley structure for an LNG storage tank, comprising:

[0004] A base plate, a cover plate, two enclosures, two rotating shafts, two pulley bodies, two supporting members and two guiding members, the two enclosures are arranged parallel to each other, the upper ends of the two enclosures are installed on the lower surface of the cover plate, the lower ends of the two enclosures are installed on the upper surface of the base plate, the two ends of the two rotating shafts are installed on the two sides of the two opposite surfaces of the two enclosures, the two pulley bodies are rotatably installed on the two rotating shafts, the two supporting members are installed on the two sides of the two opposite surfaces of the two enclosures, the two guide members are installed on the two supporting members, the two guide members are arranged below the two pulley bodies, the two guide members are arranged between the two pulley bodies, two through holes are opened on the lower surface of the base plate, one end of the two steel ropes respectively bypasses the two pulley bodies and the two guide members in turn, and passes through the two through holes.

[0005] In another preferred embodiment, the two support members are guide groove brackets.

[0006] In another preferred embodiment, the two guide members are guide member bodies, and the two guide member bodies are installed on the two guide groove brackets.

[0007] In another preferred embodiment, the two support members are guide wheel brackets.

[0008] In another preferred embodiment, the two guide members are guide wheel bodies, and the two guide wheel bodies are installed on the two guide wheel brackets.

[0009] In another preferred embodiment, the diameter of the two guide wheel bodies is smaller than the diameter of the two pulley bodies.

[0010] In another preferred embodiment, the two through holes are arranged opposite to the two guide members.

[0011] Due to the adoption of the above technical solution, the utility model has the following positive effects compared with the prior art: through the application of the utility model, a lifting pulley structure for an LNG storage tank is provided, and by arranging support members and guide members, the radius of the center pulley group can be expanded outward, thereby increasing the number of center pulley groups to meet the lifting requirements of the LNG storage tank arch. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of a first embodiment of a lifting pulley structure for an LNG storage tank according to the utility model;

[0013] Figure 2 It is a schematic diagram of a second embodiment of a lifting pulley structure for an LNG storage tank according to the utility model.

[0014] In the attached drawings: 1. bottom plate; 2. cover plate; 3. enclosure plate; 4. rotating shaft; 5. pulley body; 6. supporting member; 7. guide member; 8. wire rope; 9. through hole. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0016] like Figure 1 and Figure 2 As shown, a preferred embodiment of a lifting pulley structure for an LNG storage tank is shown, comprising:

[0017] A base plate 1, a cover plate 2, two enclosures 3, two rotating shafts 4, two pulley bodies 5, two supporting members 6 and two guiding members 7. The two enclosures 3 are arranged parallel to each other, the upper ends of the two enclosures 3 are installed on the lower surface of the cover plate 2, the lower ends of the two enclosures 3 are installed on the upper surface of the base plate 1, the two ends of the two rotating shafts 4 are installed on the two sides of the two opposite surfaces of the two enclosures 3, the two pulley bodies 5 are rotatably installed on the two rotating shafts 4, the two supporting members 6 are installed on the two sides of the two opposite surfaces of the two enclosures 3, the two guide members 7 are installed on the two supporting members 6, the two guide members 7 are arranged below the two pulley bodies 5, and the two guide members 7 are arranged between the two pulley bodies 5. Two through holes 9 are opened on the lower surface of the base plate 1, and one end of the two steel ropes 8 respectively passes around the two pulley bodies 5 and the two guide members 7 in turn, and passes through the two through holes 9.

[0018] In actual use, by setting the support member 6 and the guide member 7, the center pulley block is no longer limited by the diameter limit of the center ring of the LNG tank arch, so that the radius can be expanded outward, thereby increasing the number of center pulley blocks to meet the requirements of the LNG tank arch.

[0019] Further, as a preferred embodiment, the two support members 6 are guide groove brackets.

[0020] Further, as a preferred embodiment, the two guide members 7 are guide member bodies, and the two guide member bodies are installed on two guide groove brackets. Further, the guide member body is arranged in an arc shape so that the steel wire rope 8 fits the guide member body to play a guiding role. Furthermore, the outer wall of the guide member body is provided with a guide groove, which facilitates the guidance of the steel wire rope.

[0021] Further, as a preferred embodiment, the two support members 6 are guide wheel brackets.

[0022] Further, as a preferred embodiment, the two guide members 7 are guide wheel bodies, and the two guide wheel bodies are installed on two guide wheel brackets. Further, in actual use, according to different needs, guide wheel bodies with different diameters are selected to improve the scope of application.

[0023] Further, as a preferred embodiment, the diameter of the two guide wheel bodies is smaller than the diameter of the two pulley bodies 5.

[0024] Furthermore, as a preferred embodiment, the two through holes 9 and the two guide members 7 are arranged opposite to each other.

[0025] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting pulley structure for an LNG storage tank, characterized in that: include: A base plate, a cover plate, two enclosures, two rotating shafts, two pulley bodies, two supporting members and two guiding members, the two enclosures are arranged parallel to each other, the upper ends of the two enclosures are installed on the lower surface of the cover plate, the lower ends of the two enclosures are installed on the upper surface of the base plate, the two ends of the two rotating shafts are installed on the two sides of the two opposite surfaces of the two enclosures, the two pulley bodies are rotatably installed on the two rotating shafts, the two supporting members are installed on the two sides of the two opposite surfaces of the two enclosures, the two guide members are installed on the two supporting members, the two guide members are arranged below the two pulley bodies, the two guide members are arranged between the two pulley bodies, two through holes are opened on the lower surface of the base plate, one end of the two steel ropes respectively bypasses the two pulley bodies and the two guide members in turn, and passes through the two through holes.

2. The LNG tank lifting pulley structure according to claim 1, characterized in that: The two support members are guide groove brackets.

3. The LNG tank lifting pulley structure according to claim 2, characterized in that: The two guide members are guide member bodies, and the two guide member bodies are installed on the two guide slot brackets.

4. The LNG tank lifting pulley structure according to claim 1, characterized in that: The two support members are guide wheel brackets.

5. The LNG tank lifting pulley structure according to claim 4, characterized in that: The two guide members are guide wheel bodies, and the two guide wheel bodies are installed on the two guide wheel brackets.

6. The LNG tank lifting pulley structure according to claim 5, characterized in that: The diameter of the two guide wheel bodies is smaller than the diameter of the two pulley bodies.

7. The LNG tank lifting pulley structure according to claim 1, characterized in that: The two through holes are arranged opposite to the two guide members.

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