Marine crane jib structure and crane

Abstract

The application relates to the field of cranes, in particular to a marine crane jib structure and crane, which comprises a rotating support for steering treatment of the crane jib; a jib mechanism for supporting and longitudinally deflecting the crane; the jib mechanism is fixedly installed on the rotating support; wherein the jib mechanism comprises a hydraulic rod, an external connecting disc is fixedly connected to the outer side of the output end of the hydraulic rod, a universal seat is fixedly installed at the top end of the output end of the hydraulic rod, and a rotating ball in the universal seat is connected with the output end of the hydraulic rod; an arm connecting plate is fixedly installed on the top of the universal seat fixed shell, the marine crane jib structure and crane, the part of the hydraulic rod extending out will be attacked by seawater, at this time, the telescopic sleeve plays a role of synchronously wrapping the hydraulic rod, avoiding corrosion of the seawater on the hydraulic rod, and prolonging the service life.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, and in particular to a marine lifting boom structure and a crane. Background Art

[0002] Marine cranes are devices and machinery used by ships for loading and unloading cargo, mainly including boom devices, deck cranes and other loading and unloading machinery.

[0003] Existing marine crane jibs and cranes have the following problems: 1. Because the objects are lifted and suspended at the seaside, the erosion of seawater on the hydraulic equipment causes abrasion and wear, and the temperature difference also causes thermal deformation; 2. Sea salt crystals and sand and dust can cause damage and wear to the hydraulic equipment. Summary of the Invention

[0004] The present invention provides a marine lifting boom structure and a crane to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a marine crane boom structure, comprising a rotating support for steering the crane boom;

[0006] Boom mechanism for supporting and longitudinally deflecting the crane;

[0007] The arm mechanism is fixedly mounted on the rotating support;

[0008] The arm mechanism includes a hydraulic rod, an external plate is fixedly connected to the outer side of the output end of the hydraulic rod, a universal seat is fixedly installed on the top of the output end of the hydraulic rod, and a rotating ball inside the universal seat is connected to the output end of the hydraulic rod;

[0009] An arm connecting plate is fixedly installed on the top of the universal seat fixing housing, and the crane cantilever is deflected upward by extending the hydraulic rod to hang up the required items.

[0010] Preferably, a telescopic sleeve is fixedly connected to the bottom of the external plate, and the bottom end of the telescopic sleeve is fixedly connected to the top of the fixed end of the hydraulic rod;

[0011] The telescopic sleeve is composed of several pipe fittings and has a telescopic function.

[0012] Preferably, an inner patch is fixedly connected to the top of the fixed end of the hydraulic rod, and the outer side of the inner patch is slidably adapted to the outer side of the output end of the hydraulic rod;

[0013] An insertion tube is inserted into the interior of the fixed end of the hydraulic rod, and the bottom end of the insertion tube is inserted into the exterior of the hydraulic rod.

[0014] Preferably, a fixing plate is fixedly connected to the inner wall of the top pipe of the telescopic sleeve, and both ends of the fixing plate are symmetrically connected to side connecting plates, and an arc roller is rotatably installed on the side of the side connecting plate close to the fixing plate through an axis;

[0015] The arc-shaped roller is used to absorb and remove residual seawater and stains on the surface of the output end of the hydraulic rod.

[0016] Preferably, a scraper is fixedly connected to the bottom of the side connecting plate, and there are several scrapers, each of which is connected to each other, wherein the scraper is used to scrape off water stains on the surface of the output end of the hydraulic rod.

[0017] Preferably, a material receiving frame is provided directly below the scraper blade, the material receiving frame is fixedly mounted on the inner wall of the top pipe of the telescopic sleeve, a sponge is fixedly mounted on the bottom of the material receiving frame, and the bottoms of the material receiving frame and the sponge are both provided with perforations, and a tough sealing piece is fixedly connected to the inside of the perforations;

[0018] The receiving frame is used to receive and process the scraped trace impurities and water stains, and the outer side of the sponge is squeezed and adapted to the inner patch.

[0019] A crane comprising:

[0020] A suspension mechanism for hanging and hoisting objects, wherein the suspension mechanism is arranged on the rotating support;

[0021] The suspension mechanism includes a support shaft seat, which is fixedly mounted on the rotating support. A telescopic cantilever is rotatably mounted on the outer side of the support shaft seat, and a vertical panel is fixedly mounted on the top of the output end of the telescopic cantilever.

[0022] Preferably, an electric push rod is fixedly installed on the top of the fixed end of the telescopic cantilever, the top end of the electric push rod is fixedly connected to the vertical panel, a wire winding roller is fixedly installed on the outer side of the fixed point of the telescopic cantilever, and a hanging wire is fixedly connected to the roller inside the wire winding roller;

[0023] The outer side of the hanging wire is extruded and adapted to be equipped with a supporting tube, and the supporting tube is fixedly connected to the inner side of the vertical panel.

[0024] Preferably, a multi-shaped plate is fixedly installed at the bottom of the vertical panel, and a multi-arc groove is provided on the outer side of the multi-arc groove, wherein the bottom of the multi-arc groove is composed of a plurality of arc surfaces, the interior of the multi-arc groove is extruded and adapted to the hanging wire, and a coupling seat is fixedly installed on the top of the inner cavity of the multi-arc groove, and a one-way rod is rotatably installed inside the coupling seat, wherein the bottom of the one-way rod is slidably adapted to the arc surface near the inner side of the bottom of the multi-arc groove;

[0025] A return spring is fixedly connected to the outer side of the one-way rod, and one end of the return spring away from the one-way rod is fixedly connected to the polyhedral plate.

[0026] Preferably, the outer side of the hanging wire is extruded and adapted with a clamping assembly;

[0027] The clamping assembly includes a hanging hammer block, the top of which is connected to the hanging wire, and a protective plate is fixedly connected to the top of the hanging hammer block, wherein the protective plate is used to protect the connection between the hanging wire and the hanging hammer block.

[0028] Preferably, a No. 1 external connecting seat is fixedly installed on one side of the hanging hammer block, a No. 1 clamping claw is rotatably installed inside the No. 1 external connecting seat, and a hole is opened on the outer side of the No. 1 clamping claw;

[0029] A No. 2 external connecting seat is fixedly installed on the side of the hanging hammer block away from the No. 1 external connecting seat, a No. 2 clamping claw is rotatably installed inside the No. 2 external connecting seat, a nut is rotatably installed on the outer side of the No. 2 clamping claw through the No. 1 opening plate, and a bolt is threadedly connected to the outer side of the No. 2 clamping claw through the No. 2 opening plate;

[0030] The outer side of the No. 1 clamping claw is fitted into the inner wall of the No. 2 clamping claw.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The curved roller rolls as the fixed plate moves downward. A scraper is attached to the bottom of the side connecting plate. The scraper cleans water stains and trace impurities from the surface of the hydraulic rod's telescopic end. The curved roller absorbs and cleans any water stains not removed by the scraper.

[0033] 2. The material receiving frame is tilted, and the perforations are opened at the downward tilt position of the material receiving frame. Therefore, the water accumulated in the material receiving frame will overflow along the insertion pipe. Because the crane is raised and lowered on the sea surface, the extended part of the hydraulic rod will be invaded by seawater. At this time, the telescopic sleeve plays a role in synchronously wrapping the hydraulic rod to prevent it from being corroded by seawater and thus prolong its service life.

[0034] 3. The slots inside the multi-arc grooves close to the poly-shaped plate are fitted and slidably matched with the one-way rod, while the outer slots limit the one-way rod. When the hanging wire is pulled by wind, it will squeeze the one-way rod, and then the outer slots will limit it, preventing the hanging wire from falling outward.

[0035] 4. By allowing the No. 1 clamping claw and the No. 2 clamping claw to deflect inward through the No. 1 external connecting seat and the No. 2 external connecting seat respectively, the two clamping claws will intersect and clamp the object to be suspended. Then, by rotating the bolt in the forward direction, the bolt and the nut are threaded together, thereby fixing and limiting the two clamping claws to prevent the object from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The figure is a schematic diagram of the external structure of a marine crane boom structure of the present invention.

[0037] Figure 2 It is a structural schematic diagram of the arm mechanism of the present invention.

[0038] Figure 3 It is an enlarged structural diagram of some components of the arm support mechanism of the present invention.

[0039] Figure 4 It is a schematic cross-sectional structural diagram of the arm support mechanism of the present invention.

[0040] Figure 5 It is a side structural schematic diagram of the top component of the arm mechanism of the present invention.

[0041] Figure 6 It is a schematic cross-sectional structural diagram of the top component of the arm mechanism of the present invention.

[0042] Figure 7 It is an enlarged cross-sectional structural diagram of the top part of the arm mechanism of the present invention.

[0043] Figure 8 It is a structural schematic diagram of the suspension mechanism of the present invention.

[0044] Figure 9 It is a front view structural schematic diagram of some components of the suspension mechanism of the present invention.

[0045] Figure 10 It is a side structural schematic diagram of some components of the suspension mechanism of the present invention.

[0046] Figure 11 It is a schematic cross-sectional structural diagram of the polyhedral plate of the present invention.

[0047] Figure 12 It is a structural schematic diagram of the clamping assembly of the present invention.

[0048] Figure: 1. Rotating support; 2. Arm mechanism; 3. Suspension mechanism; 21. Hydraulic rod; 22. External plate; 23. Universal seat; 24. Arm plate; 25. Telescopic sleeve; 26. Internal patch; 27. Insertion tube; 28. Fixed plate; 29. ​​Side connecting plate; 20. Curved roller; 41. Scraper; 42. Material receiving frame; 43. Sponge; 44. Perforation; 45. Tough sealing plate; 31. Support shaft seat; 32. Telescopic cantilever; 33. Vertical panel; 34. Electric push rod; 35. Wire winding roller; 36. Hanging wire; 37. Multi-shaped plate; 38. Clamping assembly; 39. Multi-arc groove; 30. Coupling seat; 51. One-way rod; 52. Return spring; 53. Support cylinder; 61. Hanging hammer block; 62. Protective plate; 63. No. 1 external connecting seat; 64. No. 1 clamping claw; 65. Hole; 66. No. 2 external connecting seat; 67. No. 2 clamping claw; 68. Nut; 69. Bolt. DETAILED DESCRIPTION

[0049] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. It should be noted that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0050] See also Figures 1 to 12 , the present invention provides a technical solution: Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, it includes a rotating support 1 for steering the crane boom;

[0051] A boom mechanism 2 for supporting and longitudinally deflecting the crane;

[0052] The arm mechanism 2 is fixedly mounted on the rotating support 1;

[0053] The arm mechanism 2 includes a hydraulic rod 21, an external plate 22 is fixedly connected to the outer side of the output end of the hydraulic rod 21, a universal seat 23 is fixedly installed on the top of the output end of the hydraulic rod 21, and a rotating ball inside the universal seat 23 is connected to the output end of the hydraulic rod 21;

[0054] The arm connecting plate 24 is fixedly installed on the top of the universal seat 23, and the telescopic boom 32 is deflected upward by the extension of the hydraulic rod 21, so that the crane boom is deflected upward, and the required object is hung up; the rotating support 1 is started, so that the hydraulic rod 21 and the support shaft seat 31 connected with the top thereof are synchronously deflected laterally, and then the hydraulic rod 21 is started, so that the universal seat 23 connected with the top of the output end of the hydraulic rod 21 gives the arm connecting plate 24 an upward force, and the top of the arm connecting plate 24 is connected with the telescopic boom 32, so that the telescopic boom 32 is deflected upward around the support shaft seat 31 by the extension of the hydraulic rod 21, thereby playing a role of upwardly suspending the object.

[0055] The telescopic sleeve 25 is fixedly connected to the bottom of the outer connecting disc 22, and the bottom end of the telescopic sleeve 25 is fixedly connected to the top of the fixed end of the hydraulic rod 21;

[0056] The telescopic sleeve 25 is composed of a plurality of pipe fittings and has a telescopic function;

[0057] The inner patch 26 is fixedly connected to the top of the fixed end of the hydraulic rod 21, and the outer side of the inner patch 26 is slidingly matched with the outer side of the output end of the hydraulic rod 21;

[0058] The penetrating pipe 27 is inserted into the inside of the fixed end of the hydraulic rod 21, and the bottom end of the penetrating pipe 27 penetrates into the outside of the hydraulic rod 21;

[0059] The fixed plate 28 is fixedly connected to the inner wall of the top pipe fitting of the telescopic sleeve 25, both ends of the fixed plate 28 are symmetrically connected with the side connecting plates 29, and the arc-shaped roller 20 is rotatably installed on the side of the fixed plate 28 through the shaft body; when the hydraulic rod 21 is extended, the outer connecting disc 22 connected with the outer side of the output end of the hydraulic rod 21 moves upward together with the telescopic sleeve 25, and each section of the telescopic sleeve 25 is extended upward, and when the hydraulic rod 21 is retracted, the fixed plate 28 is fixedly connected to the inner wall of the top section of the telescopic sleeve 25, so that the fixed plate 28 moves downward together with the telescopic sleeve 25, and the bottom of the side connecting plate 29 is further connected with the scraper 41, so that the scraper 41 plays a role of cleaning the water stains and impurities on the surface of the hydraulic rod 21. The arc-shaped roller 20 plays a role of absorbing and cleaning the water stains that are not scraped off by the scraper 41.

[0060] The arc-shaped roller 20 is used for absorbing and cleaning the residual seawater and stains on the surface of the output end of the hydraulic rod 21.

[0061] A plurality of scrapers 41 are fixedly connected to the bottom of the side connecting plate 29, and each scraper 41 is interconnected. The scrapers 41 are used to scrape away water stains on the surface of the output end of the hydraulic rod 21. Because the crane is being raised and lowered on the sea surface, the extended portion of the hydraulic rod 21 is exposed to seawater. The telescopic sleeve 25 then acts to synchronously wrap the hydraulic rod 21, preventing seawater corrosion and extending its service life. The scrapers 41 and curved roller 20 prevent infiltrating water stains from damaging the output end of the hydraulic rod 21 and clean adhering water stains and trace impurities during the retraction of the hydraulic rod 21. Furthermore, the through-tube 27 discharges the collected water stains, preventing the hydraulic rod 21 from heating up and causing the water stains to evaporate, which could further affect the hydraulic rod 21.

[0062] A material receiving frame 42 is set up directly below the scraper 41. The material receiving frame 42 is fixedly mounted on the inner wall of the top pipe of the telescopic sleeve 25. A sponge 43 is fixedly mounted on the bottom of the material receiving frame 42. The bottoms of the material receiving frame 42 and the sponge 43 are both provided with perforations 44, and a tough sealing piece 45 is fixedly connected to the inside of the perforation 44. The sponge 43 and the inner patch 26 are squeezed and adapted to each other, so the sponge 43 plays a buffering role, and the inner patch 26 plays a role in limiting the output end of the hydraulic rod 21.

[0063] The receiving frame 42 is used to receive and process the scraped trace impurities and water stains, and the outer side of the sponge 43 is squeezed and adapted to the inner patch 26.

[0064] like Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 12 As shown, a suspension mechanism 3 for hanging and hoisting objects is provided on the rotating support 1;

[0065] The suspension mechanism 3 includes a support shaft seat 31, which is fixedly mounted on the rotating support 1. A telescopic cantilever 32 is rotatably mounted on the outer side of the support shaft seat 31, and a vertical panel 33 is fixedly mounted on the top of the output end of the telescopic cantilever 32.

[0066] An electric push rod 34 is fixedly installed on the top of the fixed end of the telescopic cantilever 32. The top of the electric push rod 34 is fixedly connected to the vertical panel 33. A wire winding roller 35 is fixedly installed on the outside of the fixed point of the telescopic cantilever 32. A hanging wire 36 is fixedly connected to the roller inside the wire winding roller 35.

[0067] The outer side of the hanging wire 36 is extruded and adapted with a support tube 53, which is fixedly connected to the inner side of the vertical panel 33;

[0068] A multi-shaped plate 37 is fixedly installed at the bottom of the vertical panel 33, and a multi-arc groove 39 is provided on the outer side of the multi-arc groove 39, wherein the bottom of the multi-arc groove 39 is composed of multiple arc surfaces, and the interior of the multi-arc groove 39 is squeezed and adapted to the hanging wire 36. A coupling seat 30 is fixedly installed on the top of the inner cavity of the multi-arc groove 39, and a one-way rod 51 is rotatably installed inside the coupling seat 30, wherein the bottom of the one-way rod 51 is slidably adapted to the arc surface near the inner side of the bottom of the multi-arc groove 39; by starting the electric push rod 34, the telescopic cantilever 32 connected to its output end will be extended, and at the same time, the height of the clamping assembly 38 will be fine-tuned, thereby playing a role in fine-tuning the height of the suspended items. In addition, by pulling the hanging wire 36 out from the winding roller 35 and placing it on the top of the support tube 53, the hanging wire 36 will pass through the multi-arc grooves 39 opened at both ends of the multi-shaped plate 37 in sequence, wherein the top of the inner cavity of the multi-arc groove 39 is rotatably installed with a one-way rod 51 through the coupling seat 30, wherein the multi-arc groove 39 near the groove inside the multi-shaped plate 37 is fitted and slidably adapted with the one-way rod 51, and the external groove will limit the one-way rod 51, so that when the hanging wire 36 is pulled by the wind, it will squeeze the one-way rod 51, and then the external groove will limit it to prevent the hanging wire 36 from falling off.

[0069] A return spring 52 is fixedly connected to the outer side of the one-way rod 51 , and one end of the return spring 52 away from the one-way rod 51 is fixedly connected to the polyhedral plate 37 .

[0070] The outer side of the hanging wire 36 is extruded and adapted with a clamping assembly 38;

[0071] The clamping assembly 38 includes a hanging hammer block 61, the top of which is connected to the hanging wire 36. A protective plate 62 is fixedly connected to the top of the hanging hammer block 61, wherein the protective plate 62 is used to protect the connection between the hanging wire 36 and the hanging hammer block 61.

[0072] A No. 1 external connecting seat 63 is fixedly mounted on one side of the hanging hammer block 61, and a No. 1 clamping claw 64 is rotatably mounted inside the No. 1 external connecting seat 63. A hole 65 is formed on the outer side of the No. 1 clamping claw 64.

[0073] The second outer connecting base 66 is fixedly installed on the side of the plumb block 61 away from the first outer connecting base 63, the second clamping claw 67 is rotatably installed in the second outer connecting base 66, the nut 68 is rotatably installed on the outer side of the second clamping claw 67 through a first perforated plate piece, and the bolt 69 is threadedly connected to the outer side of the second clamping claw 67 through a second perforated plate piece; one end of the lifting wire 36 is connected with the winding roller 35 and is wound on the roller, and the other end of the lifting wire 36 is connected with the outer side of the multi-shaped plate 37; the clamping assembly 38 is lifted upward through winding and rolling of the one end of the lifting wire 36; the first clamping claw 64 and the second clamping claw 67 are respectively deflected inward through the first outer connecting base 63 and the second outer connecting base 66, so that the two clamping claws are staggered and clamp the article to be suspended; the bolt 69 is threadedly connected with the nut 68 through forward rotation, so as to fix and limit the two clamping claws and prevent the article from falling off.

[0074] The outer side of the first clamping claw 64 is embeddedly fitted with the inner wall of the second clamping claw 67.

[0075] In use, first, the rotating support 1 is started to make the hydraulic rod 21 and the support shaft base 31 connected with the top thereof synchronously horizontally deflect, then the hydraulic rod 21 is started to make the universal seat 23 connected with the top of the output end thereof give the arm connecting plate 24 an upward force, the top of the arm connecting plate 24 is connected with the telescopic cantilever 32, so that the telescopic cantilever 32 is deflected upward with the support shaft base 31 as a fulcrum through elongation of the hydraulic rod 21. With elongation of the hydraulic rod 21, the outer connecting disc 22 connected with the outer side of the output end thereof moves upward with the telescopic sleeve 25 and is extended upward section by section, when the hydraulic rod 21 is contracted, the fixed sheet 28 is fixedly connected to the inner wall of the pipe body at the top of the telescopic sleeve 25, so that the fixed sheet 28 moves downward with the telescopic sleeve 25, the two ends of the fixed sheet 28 are connected with the arc-shaped roller 20 through the side connecting plate 29, so that the arc-shaped roller 20 rolls in the process that the fixed sheet 28 moves downward, and the bottom of the side connecting plate 29 is further connected with the scraping sheet 41.

[0076] The scraper 41 and the curved roller 20 can completely remove the water stains on the output end surface of the hydraulic rod 21. At the same time, when the telescopic sleeve 25 is fully retracted, the insertion tube 27 sleeved on the fixed end of the hydraulic rod 21 will squeeze the tough sealing piece 45 upward, so that the insertion tube 27 will extend into the sponge 43 and be flush with the center part of the inner cavity of the sponge 43. In addition, the material receiving frame 42 is in an inclined state, and the perforation 44 is opened at the downwardly inclined position of the material receiving frame 42. Therefore, the water accumulated in the material receiving frame 42 will overflow along the insertion tube 27.

[0077] By starting the electric push rod 34, the telescopic cantilever 32 connected to its output end will be extended, and the height of the clamping assembly 38 will be fine-tuned. In addition, by pulling the hanging wire 36 out from the winding roller 35 and placing it on the top of the support tube 53, the hanging wire 36 will then pass through the multi-arc grooves 39 opened at both ends of the polymorphic plate 37 in turn, wherein the top of the inner cavity of the multi-arc groove 39 is rotatably installed with a one-way rod 51 through the coupling seat 30, and the notch of the multi-arc groove 39 close to the inside of the polymorphic plate 37 is fitted and slidably adapted with the one-way rod 51, while the external notch will limit the one-way rod 51. One end of the hanging wire 36 is connected to the winding roller 35 and is wound on the roller, while the other end of the hanging wire 36 is connected to the outer side of the polyhedral plate 37. By winding and reeling up one end of the hanging wire 36, the clamping assembly 38 will rise upward, and by allowing the No. 1 clamping claw 64 and the No. 2 clamping claw 67 to deflect inward through the No. 1 outer connecting seat 63 and the No. 2 outer connecting seat 66 respectively, the two clamping claws will intertwine and clamp the items to be suspended.

[0078] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Various changes made by ordinary technicians in this field based on the above concepts without creative work fall within the scope of protection of the present invention.

Claims

1. A marine crane boom structure, characterized in that: include: A rotating support for steering the crane boom; Boom mechanism for supporting and longitudinally deflecting the crane; The arm mechanism is fixedly mounted on the rotating support; The arm mechanism includes a hydraulic rod, an external plate is fixedly connected to the outer side of the output end of the hydraulic rod, a universal seat is fixedly installed on the top of the output end of the hydraulic rod, and a rotating ball inside the universal seat is connected to the output end of the hydraulic rod; An arm connecting plate is fixedly installed on the top of the universal seat fixed housing, and the extension of the hydraulic rod causes the crane cantilever to deflect upward and hang the required items; A telescopic sleeve is fixedly connected to the bottom of the external plate, and the bottom end of the telescopic sleeve is fixedly connected to the top of the fixed end of the hydraulic rod; The telescopic sleeve is composed of several pipe parts and has telescopic function; An inner patch is fixedly connected to the top of the fixed end of the hydraulic rod, and the outer side of the inner patch is slidably adapted to the outer side of the output end of the hydraulic rod; The fixed end of the hydraulic rod is plugged with an insertion tube, and the bottom end of the insertion tube is inserted into the outside of the hydraulic rod; A fixing plate is fixedly connected to the inner wall of the top pipe of the telescopic sleeve, and side connecting plates are symmetrically connected to both ends of the fixing plate. An arc roller is rotatably installed on the side of the side connecting plate close to the fixing plate through an axis; The arc-shaped roller is used to absorb and remove residual seawater and stains on the surface of the output end of the hydraulic rod; The bottom of the side connecting plate is fixedly connected with a scraper, and the number of the scrapers is several, and each of the scrapers is connected to each other, wherein the scraper is used to scrape off water stains on the surface of the output end of the hydraulic rod; A material receiving frame is set up just below the scraper blade, and the material receiving frame is fixedly mounted on the inner wall of the top pipe of the telescopic sleeve. A sponge is fixedly mounted on the bottom of the material receiving frame. The bottoms of the material receiving frame and the sponge are both provided with perforations, and a tough sealing piece is fixedly connected to the inside of the perforations. The receiving frame is used to receive and process the scraped trace impurities and water stains, and the outer side of the sponge is squeezed and adapted to the inner patch.

2. A crane comprising the marine crane boom structure according to claim 1, characterized in that: It also includes a suspension mechanism for hanging and hoisting objects, and the suspension mechanism is arranged on the rotating support; The suspension mechanism includes a support shaft seat, which is fixedly mounted on the rotating support. A telescopic cantilever is rotatably mounted on the outer side of the support shaft seat, and a vertical panel is fixedly mounted on the top of the output end of the telescopic cantilever.

3. A crane according to claim 2, characterized in that: An electric push rod is fixedly installed on the top of the fixed end of the telescopic cantilever, and the top end of the electric push rod is fixedly connected to the vertical panel. A wire winding roller is fixedly installed on the outer side of the fixed point of the telescopic cantilever, and a hanging wire is fixedly connected to the roller inside the wire winding roller; The outer side of the hanging wire is extruded and adapted to be equipped with a supporting tube, and the supporting tube is fixedly connected to the inner side of the vertical panel.

4. A crane according to claim 3, characterized in that: A multi-shaped plate is fixedly mounted on the bottom of the vertical panel, and a multi-arc groove is provided on the outer side of the multi-arc groove, wherein the bottom of the multi-arc groove is composed of a plurality of arc surfaces, the interior of the multi-arc groove is extruded and adapted to the hanging wire, a coupling seat is fixedly mounted on the top of the inner cavity of the multi-arc groove, and a one-way rod is rotatably mounted inside the coupling seat, wherein the bottom of the one-way rod is slidably adapted to the arc surface near the inner side of the bottom of the multi-arc groove; A return spring is fixedly connected to the outer side of the one-way rod, and one end of the return spring away from the one-way rod is fixedly connected to the polyhedral plate.

5. The crane according to claim 3, characterized in that: The outer side of the hanging wire is extruded and adapted to be equipped with a clamping assembly; The clamping assembly includes a hanging hammer block, the top of which is connected to the hanging wire, and a protective plate is fixedly connected to the top of the hanging hammer block, wherein the protective plate is used to protect the connection between the hanging wire and the hanging hammer block.

6. The crane according to claim 5, characterized in that: A No. 1 external connecting seat is fixedly installed on one side of the hanging hammer block, a No. 1 clamping claw is rotatably installed inside the No. 1 external connecting seat, and a hole is opened on the outer side of the No. 1 clamping claw; A No. 2 external connecting seat is fixedly installed on the side of the hanging hammer block away from the No. 1 external connecting seat, a No. 2 clamping claw is rotatably installed inside the No. 2 external connecting seat, a nut is rotatably installed on the outer side of the No. 2 clamping claw through the No. 1 opening plate, and a bolt is threadedly connected to the outer side of the No. 2 clamping claw through the No. 2 opening plate; The outer side of the No. 1 clamping claw is fitted into the inner wall of the No. 2 clamping claw.

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