Heat dissipation type marine fairlead protective sleeve

Abstract

The present application discloses a heat dissipation type marine fairlead protective sleeve, wherein a protective sleeve body comprises a large opening protective sleeve, a middle portion protective sleeve and a small opening protective sleeve, a plurality of metal parts are arranged on an inner surface of the protective sleeve body in contact with the cable, a contact surface of the metal parts with the cable is flush with the inner surface of the protective sleeve body, the metal parts have functions of heat dissipation, electrostatic conduction and structural reinforcement, the metal parts in contact with the cable can effectively dissipate heat and conduct static electricity, and can improve the structural support performance of the protective sleeve body, which improves the comprehensive performance of the fairlead protective sleeve; The metal parts comprise one or more of heat dissipation parts, antistatic parts and structural reinforcement parts, and the metal parts can be made of different materials according to different performances, and the metal parts have high adaptability; The metal parts are arranged alone or simultaneously at the corresponding positions of the large opening protective sleeve, the middle portion protective sleeve or the small opening protective sleeve, and are arranged according to the actual application situation, which can effectively improve the heat dissipation, antistatic and structural reinforcement support performance of the protective sleeve body.

Description

Technical field

[0001] The present application relates to the technical field of marine fairlead devices, in particular to a heat dissipation type marine fairlead protective sleeve.Background art

[0002] A fairlead, also known as a bulwark chock, is a closed-hole fairlead installed on a bulwark to limit the cable lead-out position, which is a circular or elliptical annular casting. The fairlead is usually made of cast iron or cast steel and installed on the bulwark to guide the cable through the hull and prevent the cable from damaging the hull. It is widely used in the mooring of ships and marine engineering and is an essential device for ships and marine engineering. After prolonged use of the cable in the fairlead, it is easy to cause the cable to break due to wear and tear, causing accidents. Generally, a fairlead protective sleeve is arranged in the fairlead, which can reduce the wear of the cable and avoid the occurrence of cable breakage accidents.

[0003] The fairlead protective sleeve and a hawser, namely the cable, are in long-term frictional contact, and that the friction between the cable and the protective sleeve generates heat and static electricity which cannot be efficiently dissipated and conducted, which may cause the cable to melt easily. In addition, the protective sleeve is arranged on the outer side of the fairlead, and the protective sleeve bears the huge external force of the cable, which makes the protective sleeve easily damaged and broken.

[0004] Therefore, in practical applications, a heat dissipation type marine fairlead protective sleeve which can effectively dissipate heat, absorb static electricity, and have a high supporting force is required.Summary of the invention

[0005] Aiming at the problems in the related art, the present application discloses a heat dissipation type marine fairlead protective sleeve, which solves the problems of heat generated by friction between the fairlead protective sleeve and the cable and easy melting due to static electricity in the related art, and at the same time improves the support performance of the protective sleeve structure.

[0006] To achieve the above purpose, the present application provides the following technical solutions: A heat dissipation type marine fairlead protective sleeve, comprising a protective sleeve body, wherein the protective sleeve body comprises a large opening protective sleeve, a middle portion protective sleeve and a small opening protective sleeve, the protective sleeve body is of a trumpet-shaped structure which is narrow in a middle portion and wide at both ends, and a diameter of a side of the large opening protective sleeve is larger than a diameter of a side of the small opening protective sleeve, wherein one or more metal parts are arranged on an inner surface of the protective sleeve body and to be in contact with a cable, the inner surface of the protective sleeve body is a cable contact surface, and the metal parts are flushed with the inner surface of the protective sleeve body.

[0007] As a further solution of the present application, the metal parts comprise one or more of heat dissipation parts, antistatic parts and structural reinforcement parts. As a further solution of the present application, the large opening protective sleeve, the middle portion protective sleeve or the small opening protective sleeve having a single or a plurality of metal parts arranged thereon.

[0008] As a further solution of the present application, the metal parts are annular, and the metal parts are inserted into the inner surface of the protective sleeve body.

[0009] As a further solution of the present application, a width of each of the metal parts ranged between 6 to 12 cm.

[0010] As a further solution of the present application, the metal parts are penetratingly arranged on the protective sleeve body.

[0011] As a further solution of the present application, the protective sleeve body comprises a wear-resistant layer, a buffer layer is provided on an outer side of the wear-resistant layer, and the buffer layer comprises a plurality of buffer strips alternately arranged in the circumferential direction.

[0012] As a further solution of the present application, the wear-resistant layer in a middle portion of a middle portion protective sleeve is penetrated by metal parts, the buffer layer is arranged on outsides of the metal parts, and the metal parts are inserted in a joint of a large opening protective sleeve and a middle portion protective sleeve.

[0013] As a further solution of the present application, the protective sleeve body is formed by connecting large opening protective sleeve, middle portion protective sleeve and small opening protective sleeve; connecting holes are respectively arranged at joints of the large opening protective sleeve, the middle portion protective sleeve and the small opening protective sleeve, at least one connecting sleeve is arranged to be inserted into the connecting holes; one end of the at least one connecting sleeve is threadedly connected with at least one connecting bolt, and the other end of the at least one connecting sleeve is limited by the large opening protective sleeve; and the at least one connecting bolt and the limited at least one connecting sleeve are fixedly connected by connecting threads to achieve integral connection of the large opening protective sleeve, the middle portion protective sleeve and the small opening protective sleeve.

[0014] As a further solution of the present application, at least one limiting groove is arranged at one limited end of the at least one connecting sleeve, at least one limiting plate is provided on the at least one limiting groove, and the at least one limiting plate is engaged with the at least one limiting groove to achieve the limiting of the at least one connecting sleeve.

[0015] In summary, the beneficial effects of the present application are as follows: 1. A heat dissipation type marine fairlead protective sleeve, wherein a protective sleeve body comprises a large opening protective sleeve, a middle portion protective sleeve and a small opening protective sleeve, a plurality of metal parts are arranged on an inner surface of the protective sleeve body in contact with the cable, a contact surface of the metal parts with the cable is flush with the inner surface of the protective sleeve body, the metal parts have functions of heat dissipation, electrostatic conduction and structural reinforcement, the metal parts in contact with the cable can effectively dissipate heat and conduct static electricity, and can improve the structural support performance of the protective sleeve body, which improves the comprehensive performance of the fairlead protective sleeve. 2. The metal parts comprise one or more of heat dissipation parts, antistatic parts and structural reinforcement parts, and the metal parts can be made of different materials according to different performances, and the metal parts have high adaptability. 3. The metal parts are arranged alone or simultaneously at the corresponding positions of the large opening protective sleeve, the middle portion protective sleeve or the small opening protective sleeve, and are arranged according to the actual application situation, which can effectively improve the heat dissipation, antistatic and structural reinforcement support performance of the protective sleeve body. 4. The metal parts are annular and have high heat dissipation, antistatic and supporting performance. 5. A width of each of the metal parts is 6 to 12 cm, and the metal parts have larger contact areas with the cable, which improves the heat dissipation and antistatic performance. 6. The metal parts are inserted into the inner surface of the protective sleeve body, the protective sleeve body has high integrity, and the protective sleeve body has higher support performance on the basis of heat dissipation and antistativity. 7. The metal parts are penetrating arranged on the protective sleeve body, the contact surface between the metal parts and the cable and the base of the fairlead can effectively improve the heat dissipation and antistatic performance of the metal parts, and has higher supporting performance. 8. The protective sleeve body comprises a wear-resistant layer and a buffer layer, wherein the buffer layer comprises a plurality of buffer strips arranged alternately in the circumferential direction, the wear-resistant layer improves the wear resistance of the protective sleeve body, the buffer layer consisting of a plurality of alternate buffer strips is arranged on the outer side of the protective sleeve body, and the buffer layer is preferably made of buffer rubber, which improves the stability of the installation of the protective sleeve body and the fairlead. 9. The wear-resistant layer in a middle portion of a middle portion protective sleeve is penetrated by metal parts, the buffer layer is arranged on outsides of the metal parts, the metal parts are penetrating arranged at the middle portion of the middle portion protective sleeve, which improves the heat dissipation and antistatic performance of the protective sleeve body and strengthens the structural support performance. Description of drawings

[0016] The accompanying drawings are to provide a further understanding of the present application and constitute a part of the specification, which are together with the embodiments of the present application to explain the present application and do not constitute a limitation on the present application.

[0017] In the accompanying drawings: Figure 1 is a cross-sectional structural diagram of a protective sleeve body in the first embodiment of the present application. Figure 2 is a cross-sectional three-dimensional structural diagram of the protective sleeve body in the first embodiment of the present application. Figure 3 is a structural diagram of the protective sleeve body from a top view in the first embodiment of the present application. Figure 4 is a structural diagram of the protective sleeve body from a perspective view in the first embodiment of the present application. Figure 5 is a structural diagram of the separate installation of the protective sleeve body in the first embodiment of the present application. Figure 6 is a structural diagram of that the metal parts penetrates the protective sleeve body in the present application. Figure 7 is a cross-sectional structural diagram of that three metal parts are arranged on the protective sleeve body in the second embodiment of the present application. Figure 8 is a cross-sectional structural diagram of the split composition of the protective sleeve body in the present application. Figure 9 is an enlarged schematic diagram of a joint C in the cross-sectional structure of the split composition of the protective sleeve body in the present application. Figure 10 is a exploded structural diagram of a connecting bolt and a connecting sleeve of the split composition of the protective sleeve body in the present application.

[0018] Notes on the reference numerals: 1- protective sleeve body; 11- large opening protective sleeve; 12- large opening protective sleeve; 13- small opening protective sleeve; 2- metal part; 31- connection groove; 32- connection protrusion; 41- wear-resistant layer; 42- buffer layer; 43-buffer strip; 5- connecting bolt; 51- limiting sleeve; 52- connecting sleeve; 53- limiting plate; and 54- limiting groove.Embodiments

[0019] The exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects disclosed in the present embodiments as detailed in the attached claims.

[0020] It should be noted that all directional indications in the embodiments (such as up, down, left, right, front, back...) are only for explaining the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, the descriptions of "first", "second", etc. in the embodiments are only for descriptive purposes, and do not specifically refer to the order or sequence, nor are they for limiting the present application. They are only for distinguishing components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of those of ordinary skill in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and does not fall within the protection scope required by the present application.

[0022] In order to further understand the content, features and effects of the present application, the following embodiments are cited as examples, and are described in detail with the accompanying drawings as follows:Embodiment 1

[0023] As shown in Figures 1 to 5: A heat dissipation type marine fairlead protective sleeve, comprising a protective sleeve body 1, wherein the protective sleeve body 1 comprises a large opening protective sleeve 11, a middle portion protective sleeve 12 and a small opening protective sleeve 13, a diameter of a side of the large opening protective sleeve 11 is larger than a diameter of a side of the small opening protective sleeve 13, the large opening protective sleeve 11, the middle portion protective sleeve 12 and the small opening protective sleeve 13 are smoothly transitionally connected to form the protective sleeve body 1, and the protective sleeve body 1 is of a trumpet-shaped structure which is narrow in a middle portion and wide at both ends.

[0024] An inner surface of the protective sleeve body 1 is a cable contact surface, metal parts 2 are arranged on the inner surface of the protective sleeve body 1, the metal parts 2 are provided as a whole or in multiples, and the metal parts 2 are flush with the inner surface of the protective sleeve body 1. The metal parts 2 comprise one or more of heat dissipation parts, antistatic parts and structural reinforcement parts. Wherein, the plurality of metal parts 2 are arranged alone or in plurality on the large opening protective sleeve 11, the middle portion protective sleeve 12 or the small opening protective sleeve 13.

[0025] The metal parts 2 have functions of heat dissipation, electrostatic conduction and structural reinforcement, the metal parts 2 in contact with the cable can effectively dissipate heat and conduct static electricity, and can improve the structural support performance of the protective sleeve body 1, which improves the comprehensive performance of the fairlead protective sleeve. The metal parts 2 comprise one or more of heat dissipation parts, antistatic parts and structural reinforcement parts, and the metal parts 2 can be made of different materials according to different performances, and the metal parts 2 have high adaptability.

[0026] The metal parts 3 are arranged alone or simultaneously at the corresponding positions of the large opening protective sleeve 11, the middle portion protective sleeve 12 or the small opening protective sleeve 13, and are arranged according to the actual application situation, and the metal parts 2 are arranged at the maximum stress point between the protective sleeve body 1 and the cable, which can effectively improve the performance of the protective sleeve body of heat dissipation, antistativity and strengthening the structure.

[0027] Each of the metal parts 2 is a metal part 2 consisting of one or more metal materials and has heat dissipation, antistatic and supporting functions. The metal parts 2 are preferably made of aluminum for heat dissipation, antistativity and structural reinforcement.

[0028] Alternatively, each of the metal parts 2 consists of three parts of the metal parts 2 that have heat dissipation, antistatic and supporting functions.

[0029] Specifically, as shown in Figures 1 to 5, two metal parts 2 are provided on the inner surface of the protective sleeve body 1, and the metal parts 2 are respectively arranged at a joint of the large opening protective sleeve 11 and the middle portion protective sleeve 12, and at a middle portion of the middle portion protective sleeve 12.

[0030] The metal parts 2 are annular, and the annular metal parts 2 have high heat dissipation, antistatic and supporting performance.

[0031] Besides, a width of each of the metal parts 2 is 6 to 12 cm, preferably 10 cm, and the metal parts 2 have larger contact areas with the cable, which improves the heat dissipation and antistatic performance.

[0032] Besides, the protective sleeve body 1 comprises a wear-resistant layer 41 and a buffer layer 42, wherein the buffer layer comprises a plurality of buffer strips 43 arranged alternately in the circumferential direction, the wear-resistant layer 41 improves the wear resistance of the protective sleeve body 1, the buffer layer 42 consisting of a plurality of alternate buffer strips 43 is arranged on the outer side of the protective sleeve body 1, and the buffer layer 42 is preferably made of buffer rubber, which improves the stability of the installation of the protective sleeve body 1 and the fairlead.

[0033] The metal parts 2 at the joint of the large opening protective sleeve 11 and the middle portion protective sleeve 12 are inserted into the wear-resistant layer 41. A plurality of mounting holes are provided on the protective sleeve body 1, and the mounting holes are also provided at the corresponding positions of the metal parts 2. The fastening bolts are passed through the mounting holes on the protective sleeve body 1 and the metal parts 2, which achieves the fixed installation of the metal parts 2 and the protective sleeve body 1.

[0034] The metal parts 2 are inserted in the joint of the large opening protective sleeve 11 and the middle portion protective sleeve 12, the protective sleeve body 1 has high integrity, and the protective sleeve body 1 has higher support performance on the basis of heat dissipation and antistativity.

[0035] As shown in Figure 6: The metal parts 2 are penetrating arranged at the middle portion of the middle portion protective sleeve 12 of the protective sleeve body 1, and concave connection grooves 31 are provided at the connecting ends on both sides of the metal parts 2, and connection protrusions 32 are provided at the corresponding connection positions of the wear-resistant layer 41 of the protective sleeve body 1, and the connection grooves 31 and the connection protrusions 32 cooperate for fixed connection. The metal parts 2 are convenient to connect with the protective sleeve body 1, and each of the metal parts 2 has a large contact area, which has efficient heat dissipation and antistatic performance and structural strengthening performance, and effectively improves the pressure performance of the protective sleeve body 1.

[0036] The wear-resistant layer 41 in a middle portion of a middle portion protective 12 sleeve is penetrated by metal parts 2, the buffer layer 42 is arranged on outsides of the metal parts 2, the metal parts 2 are penetrating arranged at the middle portion of the middle portion protective sleeve 12, which improves the heat dissipation and antistatic performance of the protective sleeve body 1 and strengthens the structural support performance. The external buffer layer 42 consists of the plurality of circumferentially spaced buffer strips 43, which improves the stability of the installation of the protective sleeve body 1 and the fairlead body.

[0037] Besides, as shown in Figures 8 to 10: The protective sleeve body 1 is formed by connecting the large opening protective sleeve 11, the middle portion protective sleeve 12 and the small opening protective sleeve 13 , connecting holes are respectively arranged at joints of the large opening protective sleeve 11, a connection through is provided at the joint of the small opening protective sleeve 13 and the middle portion protective sleeve 12, a connection blind hole is provided at the joint of the large opening protective sleeve 11.

[0038] In the through-going integral connecting hole, an end of the small opening protective sleeve 13 can be inserted into the connecting sleeve 52 until the bottom portion of the connecting blind hole of the large opening protective sleeve 11, a connecting thread matched with the connecting bolt 5 is provided in the connecting sleeve 52, one end of the connecting sleeve 52 is threadedly connected with the connecting bolt 5, a limiting groove 54 is provided at the other end of the connecting sleeve 52, the limiting groove 54 is of a groove shape, the limiting plate 53 is provided on the limiting groove 54, a limiting clamping groove matched with the limiting groove 54 is provided at a center of one side of the limiting plate 53, and the limiting clamping groove is inserted into the connecting hole through the limiting hole groove from the outer side of the large opening protective sleeve 11 and is clamped with the limiting groove 54 for limiting.

[0039] The clamping of the limiting clamping groove and the limiting groove 54 achieves the limiting of the connecting sleeve 52 in the connection hole, the connecting bolt 5 is sleeved with the limiting sleeve 51 at the connecting end with the connecting sleeve 52, and a limiting cap is provided at one end of the limiting sleeve 51, the limiting cap is clamped at the outer side of the connection hole, which enhances the fastening connection of the large opening protective sleeve 11, the middle portion protective sleeve 12 and the small opening protective sleeve 13.

[0040] The connecting bolt 5 is fastened to the limited connecting sleeve 52 through the connecting thread, and the limiting sleeve 51 enhances the limiting through the limiting cap, which integrally achieves the fastening and connection of the large opening protective sleeve 11, the middle portion protective sleeve 12 and the small opening protective sleeve 13.Embodiment 2

[0041] As shown in Figure7: A heat dissipation type marine fairlead protective sleeve, comprising a protective sleeve body 1, wherein the protective sleeve body 1 comprises a large opening protective sleeve 11, a middle portion protective sleeve 12 and a small opening protective sleeve 13, a side diameter of the large opening protective sleeve 11 is larger than a side diameter of the small opening protective sleeve 13, the large opening protective sleeve 11, the middle portion protective sleeve 12 and the small opening protective sleeve 13 are smoothly transitionally connected to form the protective sleeve body 1, and the protective sleeve body 1 is of a trumpet-shaped structure which is narrow in a middle portion and wide at both ends.

[0042] An inner surface of the protective sleeve body 1 is a cable contact surface, one or a plurality of metal parts 2 are arranged on the inner surface of the protective sleeve body 1, and the metal parts 2 are flush with the inner surface of the protective sleeve body 1. The metal parts 2 comprise one or more of heat dissipation parts, antistatic parts and structural reinforcement parts. Wherein, the plurality of metal parts 2 are arranged alone or in plurality on the large opening protective sleeve 11, the middle portion protective sleeve 12 or the small opening protective sleeve 13.

[0043] The metal parts 2 have functions of heat dissipation, electrostatic conduction and structural reinforcement, the metal parts 2 in contact with the cable can effectively dissipate heat and conduct static electricity, and can improve the structural support performance of the protective sleeve body 1, which improves the comprehensive performance of the fairlead protective sleeve. The metal parts 2 comprise one or more of heat dissipation parts, antistatic parts and structural reinforcement parts, and the metal parts 2 can be made of different materials according to different performances, and the metal parts 2 have high adaptability.

[0044] The metal parts 3 are arranged alone or simultaneously at the corresponding positions of the large opening protective sleeve 11, the middle portion protective sleeve 12 or the small opening protective sleeve 13, and are arranged according to the actual application situation, and the metal parts 2 are arranged at the maximum stress point between the protective sleeve body 1 and the cable, which can effectively improve the performance of the protective sleeve body of heat dissipation, antistativity and strengthening the structure.

[0045] Each of the metal parts 2 is a metal part 2 consisting of one or more metal materials and has heat dissipation, antistatic and supporting functions. The metal parts 2 are preferably made of aluminum for heat dissipation, antistativity and structural reinforcement.

[0046] Alternatively, each of the metal parts 2 consists of three parts of the metal parts 2 that have heat dissipation, antistatic and supporting functions.

[0047] Specifically, as shown in Figure 7, two metal parts 2 are provided on the inner surface of the protective sleeve body 1, and the metal parts 2 are respectively arranged at a joint of the large opening protective sleeve 11 and the middle portion protective sleeve 12, at a middle portion of the middle portion protective sleeve 12, and a joint of the small opening protective sleeve 13 and the middle portion protective sleeve 12.

[0048] The metal parts 2 are annular, and the annular metal parts 2 have high heat dissipation, antistatic and supporting performance.

[0049] Besides, a width of each of the metal parts 2 is 6 to 12 cm, preferably 10 cm, and the metal parts 2 have larger contact areas with the cable, which improves the heat dissipation and antistatic performance.

[0050] Besides, the protective sleeve body 1 comprises a wear-resistant layer 41 and a buffer layer 42, wherein the buffer layer comprises a plurality of buffer strips 43 arranged alternately in the circumferential direction, the wear-resistant layer 41 improves the wear resistance of the protective sleeve body 1, the buffer layer 42 consisting of a plurality of alternate buffer strips 43 is arranged on the outer side of the protective sleeve body 1, and the buffer layer 42 is preferably made of buffer rubber, which improves the stability of the installation of the protective sleeve body 1 and the fairlead.

[0051] The metal parts 2 at the joint of the large opening protective sleeve 11 and the middle portion protective sleeve 12 and at the joint of the small opening protective sleeve 13 and the middle portion protective sleeve 12 are inserted into the wear-resistant layer 41. A plurality of mounting holes are provided on the protective sleeve body 1, and the mounting holes are also provided at the corresponding positions of the metal parts 2. The fastening bolts are passed through the mounting holes on the protective sleeve body 1 and the metal parts 2, which achieves the fixed installation of the metal parts 2 and the protective sleeve body 1.

[0052] The metal parts 2 are inserted in the joint of the large opening protective sleeve 11 and the middle portion protective sleeve 12 and in the joint of the small opening protective sleeve 13 and the middle portion protective sleeve 12, the protective sleeve body 1 has high integrity, and the protective sleeve body 1 has higher support performance on the basis of heat dissipation and antistativity.

[0053] As shown in Figure 6: The metal parts 2 are penetrating arranged at the middle portion of the middle portion protective sleeve 12 of the protective sleeve body 1, and concave connection grooves 31 are provided at the connecting ends of the metal parts 2, and connection protrusions 32 are provided at the corresponding connection positions of the wear-resistant layer 41 of the protective sleeve body 1, and the connection grooves 31 and the connection protrusions 32 cooperate for fixed connection. The metal parts 2 are convenient to connect with the protective sleeve body 1, and each of the metal parts 2 has a large contact area, which has efficient heat dissipation and antistatic performance and structural strengthening performance, and effectively improves the pressure performance of the protective sleeve body 1.

[0054] The wear-resistant layer 41 in a middle portion of a middle portion protective 12 sleeve is penetrated by metal parts 2, the buffer layer 42 is arranged on outsides of the metal parts 2, the metal parts 2 are penetrating arranged at the middle portion of the middle portion protective sleeve 12, which improves the heat dissipation and antistatic performance of the protective sleeve body 1 and strengthens the structural support performance. The external buffer layer 42 consists of the plurality ofspaced buffer strips 43, which improves the stability of the installation of the protective sleeve body 1 and the fairlead body.

[0055] Besides, as shown in Figures 8 to 10: The protective sleeve body 1 consists of the large opening protective sleeve 11, the middle portion protective sleeve 12 and the small opening protective sleeve 13 which are connected separately, connecting holes are respectively arranged at joints of the large opening protective sleeve 11, a connection through is provided at the joint of the small opening protective sleeve 13 and the middle portion protective sleeve 12, a connection blind hole is provided at the joint of the large opening protective sleeve 11.

[0056] In the through-going integral connecting hole, an end of the small opening protective sleeve 13 can be inserted into the connecting sleeve 52 until the bottom portion of the connecting blind hole of the large opening protective sleeve 11, a connecting thread matched with the connecting bolt 5 is provided in the connecting sleeve 52, one end of the connecting sleeve 52 is threadedly connected with the connecting bolt 5, a limiting groove 54 is provided at the other end of the connecting sleeve 52, the limiting groove 54 is of a groove shape, the limiting plate 53 is provided on the limiting groove 54, a limiting clamping groove matched with the limiting groove 54 is provided at a center of one side of the limiting plate 53, and the limiting clamping groove is inserted into the connecting hole through the limiting hole groove from the outer side of the large opening protective sleeve 11 and is clamped with the limiting groove 54 for limiting.

[0057] The clamping of the limiting clamping groove and the limiting groove 54 achieves the limiting of the connecting sleeve 52 in the connection hole, the connecting bolt 5 is sleeved with the limiting sleeve 51 at the connecting end with the connecting sleeve 52, and a limiting cap is provided at one end of the limiting sleeve 51, the limiting cap is clamped at the outer side of the connection hole, which enhances the fastening connection of the large opening protective sleeve 11, the middle portion protective sleeve 12 and the small opening protective sleeve 13.

[0058] The connecting bolt 5 is fastened to the limited connecting sleeve 52 through the connecting thread, and the limiting sleeve 51 enhances the limiting through the limiting cap, which integrally achieves the fastening and connection of the large opening protective sleeve 11, the middle portion protective sleeve 12 and the small opening protective sleeve 13.

[0059] Finally, it should be noted that the above disclosure are only preferable embodiments of the present application and are not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall fall within the protection scope of the present application. The scope of the present application is limited only by the attached claims.

Claims

1. A heat dissipation type marine fairlead protective sleeve, comprising a protective sleeve body (1), wherein the protective sleeve body (1) comprises a large opening protective sleeve (11), a middle portion protective sleeve (12) and a small opening protective sleeve (13), the protective sleeve body (1) is of a trumpet-shaped structure which is narrow in a middle portion and wide at both ends, and a diameter of a side of the large opening protective sleeve (11) is larger than a diameter of a side of the small opening protective sleeve (13), wherein one or more metal parts (2) are arranged on an inner surface of the protective sleeve body (1) and to be in contact with a cable, the inner surface of the protective sleeve body (1) is a cable contact surface, and the metal parts (2) are flushed with the inner surface of the protective sleeve body (1).

2. The heat dissipation type marine fairlead protective sleeve according to claim 1, wherein the metal parts (2) comprise one or more of heat dissipation parts, antistatic parts and structural reinforcement parts.

3. The heat dissipation type marine fairlead protective sleeve according to claim 1, wherein the large opening protective sleeve (11), the middle portion protective sleeve (12) or the small opening protective sleeve (13) having a single or a plurality of metal parts (2) arranged thereon.

4. The heat dissipation type marine fairlead protective sleeve according to claim 1, wherein the metal parts (2) are annular, and the metal parts (2) are inserted into the inner surface of the protective sleeve body (1).

5. The heat dissipation type marine fairlead protective sleeve according to claim 4, wherein a width of each of the metal parts (2) ranged between 6 to 12 cm.

6. The heat dissipation type marine fairlead protective sleeve according to claim 1, wherein the metal parts (2) are penetratingly arranged on the protective sleeve body (1).

7. The heat dissipation type marine fairlead protective sleeve according to claim 1, wherein the protective sleeve body (1) comprises a wear-resistant layer (41), a buffer layer (42) is provided on an outer side of the wear-resistant layer (41), and the buffer layer (42) comprises a plurality of buffer strips (43) alternately arranged in the circumferential direction.

8. The heat dissipation type marine fairlead protective sleeve according to claim 7, wherein the wear-resistant layer (41) in a middle portion of a middle portion protective sleeve (12) is penetrated by metal parts (2), the buffer layer (42) is arranged on outsides of the metal parts (2), and the metal parts (2) are inserted in a joint of a large opening protective sleeve (11) and a middle portion protective sleeve (12).

9. The heat dissipation type marine fairlead protective sleeve according to claim 1, wherein the protective sleeve body (1) is formed by connecting the large opening protective sleeve (11), the middle portion protective sleeve (12) and the small opening protective sleeve (13) ; connecting holes are respectively arranged at joints of the large opening protective sleeve (11), the middle portion protective sleeve (12) and the small opening protective sleeve (13), at least one connecting sleeve (52) is arranged to be inserted into the connecting holes; one end of the at least one connecting sleeve (52) is threadedly connected with at least one connecting bolt (5), and the other end of the at least one connecting sleeve (52) is limited by the large opening protective sleeve (11); and the at least one connecting bolt (5) and the limited at least one connecting sleeve (52) are fixedly connected by connecting threads to achieve integral connection of the large opening protective sleeve (11), the middle portion protective sleeve (12) and the small opening protective sleeve (13).

10. The heat dissipation type marine fairlead protective sleeve according to claim 9, wherein at least one limiting groove (54) is arranged at one limited end of the at least one connecting sleeve (52), at least one limiting plate (53) is provided on the at least one limiting groove (54), and the at least one limiting plate (53) is engaged with the at least one limiting groove (54) to achieve the limiting of the at least one connecting sleeve (52).

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