Gearbox cable mounting assembly, gearbox and wind power generation system

Abstract

Provided in the present application are a gearbox cable mounting assembly, a gearbox and a wind power generation system. The gearbox cable mounting assembly comprises a first mounting tube, a second mounting tube and a first connector. The first mounting tube is provided with a first accommodating cavity that runs therethrough in the axial direction, the second mounting tube running through the first accommodating cavity. The second mounting tube is provided with a second accommodating cavity that runs therethrough in the axial direction, the second accommodating cavity being used for accommodating a cable. The first connector is arranged at an end of the first mounting tube; the first connector comprises a main body, wherein the main body is a rotating member having a rotating cavity, the rotating cavity being in communication with the second accommodating cavity, and the wall of the rotating cavity sealingly abutting against the outer wall of the first mounting tube and the end face of the second mounting tube; and the main body is radially connected to the first mounting tube. A stopping portion on the main body is arranged to block the end face of the second mounting tube, the stopping portion being connected to the second mounting tube in the axial direction of the first mounting tube. Thus, the quantity of oil entering the second accommodating cavity can be reduced, preventing oil corrosion of the cable located in the second accommodating cavity.

Description

Gearbox cable installation assembly, gearbox and wind power generation system

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 1, 2023, with application number 202322942882.0 and application name “Gearbox cable installation assembly, gearbox and wind power generation system”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of gearbox structures, and in particular to a gearbox cable installation assembly, a gearbox, and a wind power generation system. Background Art

[0003] The impeller in a wind turbine is connected to a gearbox, and the gearbox increases the impeller's speed to meet the generator's rotational requirements. The conduit in the gearbox, a crucial component of the gearbox, provides a path for the power cables in the electronic control system.

[0004] In the prior art, the cable guide is a single, straight tube that passes through the sun gear and planetary carrier, or a segmented tube that connects to form a complete cable installation channel. The ends of the tube are connected to the gearbox housing, and the tube rotates under the drive of the impeller.

[0005] However, the threading tube is subjected to rotational torque, which can easily cause damage to the tube wall. The oil in the gearbox enters the threading tube from the damaged area and corrodes the power cable.

[0006] Summary of the Invention

[0007] The present application provides a gearbox cable installation assembly, a gearbox, and a wind power generation system, which can prevent oil from corroding cables.

[0008] In order to achieve the above objectives, this application adopts the following technical solutions:

[0009] In a first aspect, the present application provides a gearbox cable mounting assembly, comprising a first mounting tube, a second mounting tube, and a first connector, wherein the first mounting tube has a first accommodating cavity, the first accommodating cavity extending axially through both ends of the first mounting tube, and the second mounting tube is disposed within the first accommodating cavity;

[0010] The second mounting tube has a second accommodating cavity, which passes through both ends of the second mounting tube along the axial direction of the second mounting tube, and the second accommodating cavity is configured to accommodate a cable;

[0011] The first connecting member is arranged at the end of the first mounting tube, and the first connecting member includes a main body, which is a rotating member and has a rotating cavity. The rotating cavity is connected to the second accommodating cavity, and the cavity wall of the rotating cavity is sealed and abutted against the outer wall of the first mounting tube and the end face of the second mounting tube, and the main body and the first mounting tube are connected along the radial direction of the first mounting tube, and the main body includes a stop part, which is connected to the inner wall of the rotating cavity, and the stop part is blocked at the end face of the second mounting tube, and the stop part and the second mounting tube are connected along the axial direction of the first mounting tube.

[0012] In the gearbox cable mounting assembly described above, an annular gap is formed between the inner side wall of the first mounting tube and the outer side wall of the second mounting tube, and the annular gap extends through opposite sides of the first accommodating cavity along the axial direction of the first mounting tube;

[0013] The radial spacing of the annular gap is 4mm-30mm.

[0014] In the gearbox cable mounting assembly described above, the body extends axially along the first mounting tube, the rotary cavity penetrates the body along the axial direction on opposite sides of the body, and the body is provided with a plurality of first connection holes, which are sequentially spaced apart along the circumference of the body.

[0015] The side wall of the first mounting tube has a plurality of second connection holes, the second connection holes are opposite to the first connection holes, and the body and the first mounting tube are connected by threaded fasteners that pass through the first connection holes and the second connection holes in sequence.

[0016] In the gearbox cable mounting assembly described above, a limiting groove and a plurality of third connection holes are provided on the stopper portion. The limiting groove extends along the circumference of the stopper portion and is recessed along the end surface of the body toward a side facing away from the second mounting tube. The end surface of the second mounting tube and the groove wall of the limiting groove abut against each other along the axial direction of the first mounting tube.

[0017] The plurality of third connection holes are sequentially spaced apart along the circumference of the limiting groove;

[0018] The end surface of the second mounting tube is provided with a plurality of fourth connecting holes, the fourth connecting holes and the third connecting holes are arranged opposite to each other, and the stopper and the second mounting tube are connected by threaded fasteners which are sequentially passed through the third connecting holes and the fourth connecting holes.

[0019] As described above, the gear box cable mounting assembly, the first connecting member also includes an extension portion connected to the main body, the extension portion extends from the side wall of the main body along the radial direction of the rotary cavity, the extension portion has a plurality of fifth connecting holes, the plurality of fifth connecting holes are distributed in sequence along the circumference of the main body, and the extension portion and the gear box are threadedly connected through the fifth connecting holes.

[0020] As described above, the gearbox cable installation assembly also includes a first sealing ring and a second sealing ring, the first sealing ring is sealingly connected between the cavity wall of the first accommodating cavity and the outer wall of the second installation tube, and the second sealing ring is connected between the cavity wall of the rotary cavity and the end face of the second installation tube.

[0021] In the gearbox cable installation assembly as described above, the second sealing ring is in sealing contact between the end surface of the stopper portion and the wall of the second installation tube;

[0022] The cross section of the second sealing ring is at least one of a circle and a square.

[0023] The gearbox cable installation assembly as described above further includes a second connecting member, the second connecting member and the first connecting member being arranged opposite to each other along the axial direction of the first installation tube;

[0024] The second connecting member includes a flange body, which is sleeved on the first mounting tube and connected to the first mounting tube along a radial direction of the first mounting tube.

[0025] In a second aspect, the present application provides a gearbox, comprising a box body and any one of the gearbox cable installation assemblies provided in the first aspect, wherein the gearbox cable installation assembly is connected to the box body.

[0026] In a third aspect, the present application provides a wind power generation system, comprising any one of the gearbox cable installation assemblies provided in the first aspect or the gearbox provided in the second aspect.

[0027] The gearbox cable installation assembly, gearbox and wind power generation system provided in the embodiments of the present application include a first mounting tube, a second mounting tube and a first connecting member, wherein the first mounting tube has a first accommodating chamber, the first accommodating chamber passing through both ends of the first mounting tube along the axial direction of the first mounting tube, and the second mounting tube is arranged in the first accommodating chamber; the second mounting tube has a second accommodating chamber, the second accommodating chamber passing through both ends of the second mounting tube along the axial direction of the second mounting tube, and the second accommodating chamber is configured to accommodate a cable; the first connecting member is arranged at the end of the first mounting tube, the first connecting member includes a body, the body is a rotating member, and has a rotating chamber, the rotating chamber and the second accommodating chamber are communicated, the cavity wall of the rotating chamber is sealed against the outer wall of the first mounting tube and the end face of the second mounting tube, and the body and the first mounting tube are connected along the radial direction of the first mounting tube, the body includes a stopper, the stopper is connected to the inner wall of the rotating chamber, and the stopper is blocked by the end face of the second mounting tube, and the stopper and the second mounting tube are connected along the axial direction of the first mounting tube. With such a structural arrangement, the sealing performance of the second mounting tube can be improved, and the oil entering the second accommodating chamber can be reduced, thereby effectively preventing the oil from corroding the cables in the second accommodating chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] FIG1 is a structural schematic diagram 1 of a gearbox cable installation assembly provided in an embodiment of the present application;

[0030] FIG2 is a schematic diagram of an end portion of a first mounting tube in a gearbox cable mounting assembly provided in an embodiment of the present application;

[0031] FIG3 is a first cross-sectional view of the structure of the first connector in the gearbox cable installation assembly provided by an embodiment of the present application;

[0032] FIG4 is a structural cross-sectional view of a second connector in a gearbox cable installation assembly according to an embodiment of the present application;

[0033] FIG5 is a second structural diagram of a gearbox cable installation assembly provided in an embodiment of the present application;

[0034] FIG6 is a partial enlarged view of portion A in FIG5 ;

[0035] FIG7 is a partial enlarged view of portion B in FIG5 ;

[0036] FIG8 is a second structural cross-sectional view of the first connector in the gearbox cable installation assembly provided in an embodiment of the present application;

[0037] FIG9 is a schematic diagram of a partial connection structure of a first connector and a second mounting tube in a gearbox cable assembly provided in an embodiment of the present application.

[0038] Description of reference numerals:

[0039] 100-Gearbox cable mounting assembly;

[0040] 110 - first mounting tube; 1101 - first accommodating cavity; 1102 - second connecting hole; 1103 - oil drain hole; 1104 - seventh connecting hole;

[0041] 120 - second mounting tube; 1201 - second accommodating cavity; 1202 - fourth connecting hole;

[0042] 130 - first connecting member; 1301 - body; 1302 - rotary chamber; 1303 - first connecting hole; 1304 - stopper; 1305 - third connecting hole; 1306 - extension; 1307 - fifth connecting hole; 1308 - limiting groove;

[0043] 140-annular gap;

[0044] 150 - second connecting member; 1501 - flange body; 1502 - sixth connecting hole; 1503 - flange extension; 1504 - eighth connecting hole; 1505 - flange rotation cavity;

[0045] 160 - sealing unit; 1601 - first sealing ring; 1602 - second sealing ring; 1603 - third sealing ring; 1604 - fourth sealing ring. DETAILED DESCRIPTION

[0046] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0047] The impeller in a wind turbine is connected to a gearbox, and the gearbox increases the impeller's speed to meet the generator's rotational requirements. The conduit in the gearbox, a crucial component of the gearbox, provides a path for the power cables in the electronic control system.

[0048] In the prior art, the cable guide is a single, straight tube that passes through the sun gear and planetary carrier, or a segmented tube that connects to form a complete cable installation channel. The ends of the tube are connected to the gearbox housing, and the tube rotates under the drive of the impeller.

[0049] However, the threading tube is subjected to rotational torque, which can easily cause damage to the tube wall. The oil in the gearbox enters the threading tube and corrodes the power cable.

[0050] In order to overcome the defects in the prior art, the present application provides a gearbox cable installation assembly, a gearbox, and a wind power generation system, wherein the gearbox cable installation assembly includes a first installation tube, a second installation tube, and a first connector. The first installation tube has a first accommodating chamber that runs axially through both sides. The second installation tube is arranged in the first accommodating chamber. The second installation tube has a second accommodating chamber. The rotary chamber of the first connector is connected to the second accommodating chamber for the cable to pass through the second accommodating chamber. The cavity wall of the rotary chamber of the first connector is radially connected to the first installation tube and axially connected to the second installation tube. Through such a structural setting, the oil can be blocked on the outside of the second installation tube to prevent the oil from entering the second accommodating chamber and corroding the cable.

[0051] The contents of this application will be described in detail below with reference to the accompanying drawings so that those skilled in the art can understand the contents of this application more clearly and in detail.

[0052] Figure 1 is a structural schematic diagram of the gearbox cable installation assembly provided in an embodiment of the present application. Figure 2 is a schematic diagram of the end of the first mounting tube in the gearbox cable installation assembly provided in an embodiment of the present application. Figure 3 is a structural cross-sectional view of the first connecting member in the gearbox cable installation assembly provided in an embodiment of the present application. Figure 4 is a structural cross-sectional view of the second connecting member in the gearbox cable installation assembly provided in an embodiment of the present application. Figure 5 is a structural schematic diagram of the gearbox cable installation assembly provided in an embodiment of the present application. Figure 6 is a partial enlarged view of part A in Figure 5. Figure 7 is a partial enlarged view of part B in Figure 5. Figure 8 is a structural cross-sectional view of the first connecting member in the gearbox cable installation assembly provided in an embodiment of the present application. Figure 9 is a schematic diagram of the partial connection structure of the first connecting member and the second mounting tube in the gearbox cable installation assembly provided in an embodiment of the present application.

[0053] As shown in Figures 1 to 9, this embodiment provides a gear box cable installation assembly 100, including a first mounting tube 110, a second mounting tube 120 and a first connecting member 130. The first mounting tube 110 has a first accommodating cavity 1101, and the first accommodating cavity 1101 passes through both ends of the first mounting tube 110 along the axial direction of the first mounting tube 110. The second mounting tube 120 is arranged in the first accommodating cavity 1101.

[0054] The second mounting tube 120 has a second accommodating cavity 1201 , which passes through both ends of the second mounting tube 120 along the axial direction of the second mounting tube 120 . The second accommodating cavity 1201 is configured to accommodate cables.

[0055] The first connecting member 130 is arranged at the end of the first mounting tube 110, and the first connecting member 130 includes a main body 1301. The main body 1301 is a rotating member and has a rotating chamber 1302. The rotating chamber 1302 is connected to the second accommodating chamber 1201. The cavity wall of the rotating chamber 1302 is sealed and abutted against the outer wall of the first mounting tube 110 and the end face of the second mounting tube 120, and the main body 1301 and the first mounting tube 110 are connected along the radial direction of the first mounting tube 110. The main body 1301 includes a stop portion 1304, which is connected to the inner wall of the rotating chamber 1302, and the stop portion 1304 is blocked at the end face of the second mounting tube 120. The stop portion 1304 and the second mounting tube 120 are connected along the axial direction of the first mounting tube 110.

[0056] The gearbox cable mounting assembly 100 provided in this embodiment is inserted into the first accommodating chamber 1101 of the first mounting tube 110 via the second mounting tube 120. The first connector 130, the first mounting tube 110, and the second mounting tube 120 are all sealed and relatively fixedly connected to each other. This prevents oil from entering the second accommodating chamber 1201, thereby maintaining a dry environment within the second accommodating chamber 1201 and effectively reducing oil corrosion on the cable. In addition, the stopper 1304 on the first connector 130 abuts the end surface of the second mounting tube 120, and the two are connected along the axial direction of the first mounting tube 110. While ensuring the sealing of the second mounting tube 120, the axial deviation of the second mounting tube 120 can be avoided, thereby maintaining the overall structure of the gearbox cable mounting assembly 100.

[0057] The specific structure and various possible implementations of the gearbox cable installation assembly 100 are described in detail below.

[0058] As shown in Figures 1 to 3 and 5 , the gearbox cable mounting assembly 100 in this embodiment includes a first mounting tube 110, a second mounting tube 120, and a first connector 130. The first mounting tube 110 is a straight tube with a circular cross-sectional profile. The first mounting tube 110 has a first accommodating cavity 1101 extending axially along the first mounting tube 110 and penetrating opposite sides of the first mounting tube 110 along the axial direction to accommodate the second mounting tube 120.

[0059] In some embodiments, there may be one or more first mounting tubes 110. As shown in FIG5 , when there are two first mounting tubes 110, the two first mounting tubes 110 are axially connected relative to each other, so that the two first accommodating cavities 1101 of the two first mounting tubes 110 are relatively connected and accommodate the second mounting tube 120. In this connected state, the second mounting tube 120 sequentially passes through different first accommodating cavities 1101 along the axial direction of the first mounting tube 110.

[0060] In this embodiment, the cross-sectional profile of the second mounting tube 120 matches the shape of the wall of the first accommodating chamber 1101, allowing the second mounting tube 120 to smoothly pass through the first accommodating chamber 1101 along the axial direction of the first mounting tube 110. The second mounting tube 120 has a second accommodating chamber 1201. The second accommodating chamber 1201 extends axially along the first mounting tube 110 and penetrates opposite sides of the second mounting tube 120 along the axial direction of the second mounting tube 120, allowing cables to pass through the second accommodating chamber 1201 along the axial direction of the second mounting tube 120.

[0061] In this embodiment, the first connector 130 is disposed at one end of the first mounting tube 110 along the axial direction of the first mounting tube 110. Of course, the first connector 130 can be disposed at either end of the first mounting tube 110. Furthermore, the first connector 130 includes a body 1301 extending along the axial direction of the first mounting tube 110. The body 1301 is a rotating member, and its interior is hollow, forming a rotating cavity 1302. The rotating cavity 1302 extends through opposite sides of the body 1301 along the axial direction. The body 1301 is sleeved onto the outside of the first mounting tube 110. It will be understood that a portion of the wall of the rotating cavity 1302 seals against the circumferential outer wall of the first mounting tube 110. Furthermore, a portion of the wall of the rotating cavity 1302 seals against the end faces of the first mounting tube 110 and the second mounting tube 120 along the axial direction of the first mounting tube 110, thereby preventing oil in the gearbox from entering the first accommodating cavity 1101 and the second accommodating cavity 1201. In addition, the body 1301 is connected to the first mounting pipe 110 along the radial direction of the first mounting pipe 110 .

[0062] Specifically, the stopper 1304 of the body 1301 extends radially away from the wall of the rotary chamber 1302 of the body 1301. The stopper 1304 abuts against the sidewall of the second mounting tube 120 and the end surface of the second mounting tube 120 along the axial direction of the first mounting tube 110. In other words, the stopper 1304 blocks the end surface of the second mounting tube 120, thereby limiting the axial movement of the second mounting tube 120 along the body 1301. The connection between the stopper 1304 and the second mounting tube 120 along the axial direction of the first mounting tube 110 and the second mounting tube 120 maintains relative fixity.

[0063] Furthermore, the inner wall of the first mounting tube 110 and the outer wall of the second mounting tube 120 form an annular gap 140, which passes through the opposite sides of the first accommodating cavity 1101 along the axial direction of the first mounting tube 110, and the radial spacing of the annular gap 140 (marked L in Figure 6) is 4mm-30mm.

[0064] Referring to Figures 1, 5, and 6, second mounting tube 120 extends axially through first accommodating chamber 1101 along the first mounting tube 110. The outer diameter of second mounting tube 120 is smaller than the inner diameter of first mounting tube 110. Consequently, an annular gap 140 is formed between the inner wall of first mounting tube 110 and the outer wall of second mounting tube 120. Annular gap 140 extends axially through first accommodating chamber 110, extending along opposite sides of first accommodating chamber 1101. As will be appreciated, if oil seeps into first accommodating chamber 1101, it will accumulate in annular gap 140 and cannot enter second accommodating chamber 1201, thereby preventing corrosion of the cable.

[0065] In some embodiments, the main body 1301 extends axially along the first mounting tube 110, the rotary cavity 1302 passes through the opposite sides of the main body 1301 along the axial direction of the main body 1301, and a plurality of first connecting holes 1303 are provided on the main body 1301, and the plurality of first connecting holes 1303 are distributed in sequence along the circumference of the main body 1301; the side wall of the first mounting tube 110 has a plurality of second connecting holes 1102, the second connecting holes 1102 are opposite to the first connecting holes 1303, and the main body 1301 and the first mounting tube 110 are connected by threaded fasteners that are sequentially passed through the first connecting holes 1303 and the second connecting holes 1102.

[0066] 1 , 3 , 5 , and 7 , the body 1301 of this embodiment extends axially along the first mounting tube 110. A partial rotation cavity 1302 of the body 1301 wraps around the end of the first mounting tube 110. A plurality of first connection holes 1303 are spaced apart along the circumference of the body 1301. The first connection holes 1303 extend radially through the wall of the rotation cavity 1302. Correspondingly, a plurality of second connection holes 1102 are provided on the outer wall of the first mounting tube 110. The plurality of second connection holes 1102 are spaced apart along the circumference of the first mounting tube 110. The second connection holes 1102 extend radially along the first mounting tube 110. It is readily understood that the number and positions of the first connection holes 1303 and the second connection holes 1102 correspond to each other. The body 1301 and the first mounting tube 110 are connected via threaded fasteners extending through the first connection holes 1303 and the second connection holes 1102. That is, the body 1301 and the first mounting tube 110 are relatively fixedly connected along the radial direction of the first mounting tube 110 .

[0067] Exemplarily, at least one of the first connecting hole 1303 and the second connecting hole 1102 is a threaded hole. Of course, the first connecting hole 1303 and the second connecting hole 1102 can also be threaded holes to cooperate with threaded fasteners to maintain a relatively stable connection between the main body 1301 and the first mounting tube 110.

[0068] Furthermore, the stopper portion 1304 is provided with a limiting groove 1308 and a plurality of third connection holes 1305. The limiting groove 1308 extends axially along the stopper portion 1304 and is recessed along the end surface of the body 1301, facing away from the second mounting tube 120. The end surface of the second mounting tube 120 and the groove wall of the limiting groove 1308 abut axially against the first mounting tube 110. The plurality of third connection holes 1305 are spaced apart circumferentially along the limiting groove 1308. The end surface of the second mounting tube 120 is provided with a plurality of fourth connection holes 1202, which are arranged opposite the third connection holes 1305. The stopper portion 1304 and the second mounting tube 120 are connected via threaded fasteners that pass through the third connection holes 1305 and the fourth connection holes 1202, respectively.

[0069] Still as shown in Figures 1, 3, 5 and 7, the stop portion 1304 extends radially away from the cavity wall of the rotary cavity 1302 along the main body 1301, and the stop portion 1304 abuts against the side wall of the second mounting tube 120 and the end face of the second mounting tube 120 along the axial direction of the first mounting tube 110, that is, the stop portion 1304 is blocked at the end face of the second mounting tube 120, thereby limiting the axial movement of the second mounting tube 120 along the main body 1301.

[0070] To maintain a relatively stable and fixed connection between the second mounting tube 120 and the first connector 130, the stopper 1304 is provided with a plurality of third connection holes 1305. These holes are spaced apart along the circumference of the stopper 1304 and extend axially through opposite sides of the stopper 1304. Correspondingly, the end surface of the second mounting tube 120 opposite the stopper 1304 is provided with a plurality of fourth connection holes 1202. These holes are spaced apart along the circumference of the second mounting tube 120 and extend axially along the second mounting tube 120. The number and position of the fourth connection holes 1202 correspond to the number and position of the third connection holes 1305. Threaded fasteners are sequentially inserted through the third and fourth connection holes 1305, 1202, thereby maintaining a relatively stable and fixed connection between the first connector 130 and the second mounting tube 120 along the axial direction of the first mounting tube 110.

[0071] For example, as shown in Figures 8 and 9, the stopper 1304 abuts against the end surface of the second mounting tube 120 via a retaining groove 1308 on one side of the first mounting tube 110 along the axial direction of the first mounting tube 110. The spacing between the two opposing groove walls of the retaining groove 1308 along the radial direction of the first mounting tube 110 is sufficient to accommodate the second mounting tube 120. At this point, the groove walls of the retaining groove 1308 abut against portions of the inner and outer walls of the second mounting tube 120. In other words, the end of the second mounting tube 120 is partially engaged with the retaining groove 1308 along the axial direction of the first mounting tube 110. The end surface of the second mounting tube 120 abuts against the retaining groove 1308 along the axial direction of the first mounting tube 110.

[0072] In order to maintain a stable relative fixed connection between the second mounting tube 120 and the first connecting member 130 , the second mounting tube 120 and the first connecting member 130 are connected by threaded fasteners that pass through the third connecting hole 1305 and the fourth connecting hole 1202 in sequence.

[0073] The structure and connection method of the third connection holes 1305 and the fourth connection holes 1202 in this embodiment have been described in detail in the previous section and will not be repeated here. The difference is that the third connection holes 1305 in this embodiment are spaced apart along the circumference of the limiting groove 1308, and the third connection holes 1305 extend through the limiting groove 1308 along its axial direction on opposite sides.

[0074] In some embodiments, the first connecting member 130 also includes an extension portion 1306 connected to the main body 1301, the extension portion 1306 extends from the side wall of the main body 1301 along the radial direction of the rotating chamber 1302, the extension portion 1306 has a plurality of fifth connecting holes 1307, the plurality of fifth connecting holes 1307 are distributed in sequence along the circumference of the main body 1301, and the extension portion 1306 and the gear box are threadedly connected through the fifth connecting holes 1307.

[0075] As shown in FIG3 , the first connector 130 in this embodiment further includes an extension portion 1306, which is connected to the body 1301 and extends from the outer wall of the body 1301 along the radial direction of the rotary cavity 1302 toward a side away from the rotary cavity 1302. The extension portion 1306 is used to connect to the gearbox. Specifically, the extension portion 1306 is provided with a plurality of fifth connection holes 1307, which are sequentially connected and distributed along the axial direction of the extension portion 1306. The fifth connection holes 1307 extend through opposite sides of the extension portion 1306 along the axial direction of the body 1301. Correspondingly, the connection area on the gearbox is also provided with connection holes that are opposite to the fifth connection holes 1307 on the extension portion 1306 and are connected via threaded fasteners. This ensures a relatively stable fixed connection between the gearbox cable mounting assembly 100 and the gearbox.

[0076] It should be noted that this embodiment does not specifically limit the number of the fifth connection holes 1307, and the number of the fifth connection holes 1307 needs to be reasonably selected in combination with actual installation conditions.

[0077] In some embodiments, the gear box cable mounting assembly 100 further includes a second connecting member 150, the second connecting member 150 and the first connecting member 130 are arranged opposite to each other along the axial direction of the first mounting tube 110, and the second connecting member 150 includes a flange body 1501, the flange body 1501 is sleeved on the first mounting tube 110, and the flange body 1501 is connected to the first mounting tube 110 along the radial direction of the first mounting tube 110.

[0078] As shown in Figures 1, 4, and 6, the second connecting member 150 and the first connecting member 130 are arranged opposite each other along the axial direction of the first mounting tube 110. The second connecting member 150 is also a rotating member and includes a flange body 1501 and a flange extension 1503 connected to each other. The flange body 1501 has a flange rotating cavity 1505 extending axially through opposite sides of the flange body 1501. The flange body 1501 is sleeved onto the first mounting tube 110, and the flange rotating cavity 1505 communicates with the second accommodating cavity 1201. The flange body 1501 is provided with a plurality of sixth connecting holes 1502. The sixth connecting holes 1502 extend radially through the wall of the flange rotating cavity 1505 and are spaced apart circumferentially along the flange body 1501.

[0079] Correspondingly, the first mounting tube 110 is provided with a plurality of seventh connection holes 1104, which are spaced apart along the circumference of the first mounting tube 110 and extend radially along the first mounting tube 110. The flange body 1501 and the first mounting tube 110 are connected via threaded fasteners that are sequentially inserted through the sixth connection holes 1502 and the seventh connection holes 1104, thereby connecting the flange body 1501 and the first mounting tube 110 radially along the first mounting tube 110.

[0080] The flange extension 1503 extends from the cavity wall of the flange rotating cavity 1505 along the radial direction of the flange body 1501 toward the side away from the flange rotating cavity 1505, and a plurality of eighth connecting holes 1504 are provided on the flange extension 1503. The plurality of eighth connecting holes 1504 are distributed in sequence along the circumference of the flange extension 1503. The eighth connecting holes 1504 pass through the opposite sides of the flange extension 1503 along the axial direction of the flange body 1501, and the flange extension 1503 and the gear box are relatively fixedly connected through the eighth connecting holes 1504.

[0081] In some embodiments, as shown in FIG5 , when multiple first mounting tubes 110 are sequentially connected along the axial direction, two adjacent first mounting tubes 110 may be connected via two first connectors 130 or two second connectors 150. When two first connectors 130 are facing each other, the fifth connecting holes 1307 on the two first connectors 130 face each other, and threaded fasteners pass through the two fifth connecting holes 1307 along the axial direction of the first mounting tubes 110, thereby maintaining a stable relative fixed connection between the two first mounting tubes 110 along the axial direction.

[0082] When the two second connecting members 150 are opposite to each other, the eighth connecting holes 1504 on the two second connecting members 150 are opposite to each other, and the threaded fasteners pass through the two eighth connecting holes 1504 along the circumference of the first mounting tube 110 to keep the two first mounting tubes 110 stably relatively fixedly connected along the axial direction.

[0083] To prevent oil from accumulating in the annular gap 140 and to facilitate oil drainage from the annular gap 140, a plurality of oil drain holes 1103 are provided on the sidewall of the first mounting tube 110. The plurality of oil drain holes 1103 are spaced apart along the circumference of the first mounting tube 110. The oil flows through the annular gap 140 and then returns to the gearbox through the oil drain holes 1103.

[0084] In some embodiments, the gearbox cable installation assembly 100 further includes a sealing unit 160, which includes a first sealing ring 1601 and a second sealing ring 1602. The first sealing ring 1601 is sealingly connected between the cavity wall of the first accommodating chamber 1101 and the outer wall of the second installation tube 120, and the second sealing ring 1602 is connected between the cavity wall of the rotary chamber 1302 and the end face of the second installation tube 120. The provision of the first sealing ring 1601 and the second sealing ring 1602 can improve the sealing performance of the gearbox cable installation assembly 100, effectively preventing oil in the annular gap 140 from entering the second accommodating chamber 1201 through the end face of the second installation tube 120.

[0085] Sealing unit 160 also includes a third sealing ring 1603 and a fourth sealing ring 1604. Third sealing ring 1603 is connected between the wall of rotary cavity 1302 and the outer wall of first mounting tube 110, while fourth sealing ring 1604 is connected between the wall of flange rotary cavity 1505 and the outer wall of first mounting tube 110. In other words, the provision of third sealing ring 1603 and fourth sealing ring 1604 improves the sealing between first connector 130, second connector 150, and first mounting tube 110, thereby reducing the ingress of oil into annular gap 140.

[0086] Furthermore, the second sealing ring 1602 is sealed against the end surface of the stopper 1304 and the wall of the second mounting tube 120 ; the cross section of the second sealing ring 1602 is at least one of a circle and a square.

[0087] Referring to Figure 8 , the end of the second mounting tube 120 is positioned within the retaining groove 1308. A second sealing ring 1602 is disposed between the inner sidewall of the second mounting tube 120 and the wall of the retaining groove 1308. Another second sealing ring 1602 is disposed between the outer sidewall of the second mounting tube 120 and the wall of the retaining groove 1308. The provision of two second sealing rings 1602 further improves the sealing between the second mounting tube 120 and the first connector 130. Furthermore, the cross-section of the second sealing ring 1602 in this embodiment is square, further enhancing the sealing of the end of the second mounting tube 120. Similarly, the cross-section of the second sealing ring 1602 in this embodiment may also be circular. Of course, the cross-sectional shape of the second sealing ring 1602 is not limited to the circular or square shapes described above. Any cross-sectional shape of the second sealing ring 1602 that meets the sealing requirements may be used.

[0088] The gearbox cable mounting assembly provided in an embodiment of the present application includes a first mounting tube, a second mounting tube, and a first connector. The first mounting tube has a first accommodating chamber that extends axially through both ends of the first mounting tube, and the second mounting tube is disposed within the first accommodating chamber. The second mounting tube has a second accommodating chamber that extends axially through both ends of the second mounting tube, and the second accommodating chamber is configured to accommodate a cable. The first connector is disposed at the end of the first mounting tube, and the first connector includes a body that is a rotating member and has a rotating chamber that communicates with the second accommodating chamber. The chamber wall of the rotating chamber is in sealing contact with the outer wall of the first mounting tube and the end face of the second mounting tube, and the body and the first mounting tube are radially connected to each other. The body includes a stopper that is connected to the inner wall of the rotating chamber and is disposed on the end face of the second mounting tube, and the stopper and the second mounting tube are axially connected to each other. This structural arrangement can effectively prevent oil from corroding the cable in the second accommodating chamber.

[0089] Furthermore, embodiments of the present application may also provide a gearbox comprising a housing and any of the gearbox cable installation assemblies 100 provided in the first aspect, wherein the gearbox cable installation assembly 100 is connected to the housing. This prevents corrosion of the cables in the gearbox, extends the service life of the gearbox, and reduces maintenance costs.

[0090] In addition, embodiments of the present application may further provide a wind power generation system, comprising the gearbox cable installation assembly 100 or the gearbox in the aforementioned embodiments. Such a wind power generation system can reduce the maintenance cost of cables and gearboxes.

[0091] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0092] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0093] It should be readily understood that “on,” “above,” and “over” in this application should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes the meaning of “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0094] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90° or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A gearbox cable installation assembly, characterized in that: The device comprises a first mounting tube, a second mounting tube and a first connecting member, wherein the first mounting tube has a first accommodating cavity, the first accommodating cavity penetrates both ends of the first mounting tube along the axial direction of the first mounting tube, and the second mounting tube is disposed in the first accommodating cavity; The second mounting tube has a second accommodating cavity, the second accommodating cavity penetrates two ends of the second mounting tube along the axial direction of the second mounting tube, and the second accommodating cavity is configured to accommodate a cable; The first connecting member is arranged at the end of the first mounting tube, the first connecting member includes a main body, the main body is a rotating member, and has a rotating cavity, the rotating cavity is connected to the second accommodating cavity, the cavity wall of the rotating cavity is sealed and abutted with the outer wall of the first mounting tube and the end face of the second mounting tube, and the main body and the first mounting tube are connected along the radial direction of the first mounting tube, the main body includes a stopper, the stopper is connected to the inner wall of the rotating cavity, and the stopper is blocked at the end face of the second mounting tube, and the stopper and the second mounting tube are connected along the axial direction of the first mounting tube.

2. The gearbox cable installation assembly according to claim 1, characterized in that: An inner side wall of the first mounting tube and an outer side wall of the second mounting tube form an annular gap, and the annular gap penetrates two opposite sides of the first accommodating cavity along the axial direction of the first mounting tube; The radial spacing of the annular gap is 4mm-30mm.

3. The gearbox cable installation assembly according to claim 1, characterized in that: The body extends along the axial direction of the first mounting tube, the rotary cavity penetrates through opposite sides of the body along the axial direction of the body, a plurality of first connecting holes are provided on the body, and the plurality of first connecting holes are sequentially spaced and distributed along the circumference of the body; The side wall of the first mounting tube has a plurality of second connection holes, the second connection holes are opposite to the first connection holes, and the body and the first mounting tube are connected by threaded fasteners which are sequentially penetrated through the first connection holes and the second connection holes.

4. The gearbox cable installation assembly according to claim 3, characterized in that: The stopper is provided with a limiting groove and a plurality of third connecting holes, the limiting groove extending along the circumference of the stopper, the limiting groove being recessed along the end surface of the body toward a side away from the second mounting tube, and the end surface of the second mounting tube and the groove wall of the limiting groove abutting against each other along the axial direction of the first mounting tube; The plurality of third connection holes are sequentially spaced and distributed along the circumference of the limiting groove; The end surface of the second mounting tube is provided with a plurality of fourth connecting holes, the fourth connecting holes and the third connecting holes are arranged opposite to each other, and the stopper and the second mounting tube are connected by threaded fasteners which are sequentially passed through the third connecting holes and the fourth connecting holes.

5. The gearbox cable installation assembly according to claim 4, characterized in that: The first connecting member also includes an extension portion connected to the main body, the extension portion extends from the side wall of the main body along the radial direction of the rotary chamber, the extension portion has a plurality of fifth connecting holes, the plurality of fifth connecting holes are distributed in sequence along the circumference of the main body, and the extension portion and the gear box are threadedly connected through the fifth connecting holes.

6. The gearbox cable installation assembly according to any one of claims 1 to 5, characterized in that: It also includes a first sealing ring and a second sealing ring, wherein the first sealing ring is sealingly connected between the cavity wall of the first accommodating cavity and the outer side wall of the second mounting tube, and the second sealing ring is connected between the cavity wall of the rotating cavity and the end face of the second mounting tube.

7. The gearbox cable installation assembly according to claim 6, characterized in that: The second sealing ring is sealingly abutted between the end surface of the stopper and the tube wall of the second mounting tube; A cross section of the second sealing ring is at least one of a circle and a square.

8. The gearbox cable installation assembly according to any one of claims 1 to 5, characterized in that: It also includes a second connecting member, wherein the second connecting member and the first connecting member are arranged opposite to each other along the axial direction of the first mounting tube; The second connecting member includes a flange body, the flange body is sleeved on the first mounting tube, and the flange body is connected to the first mounting tube along a radial direction of the first mounting tube.

9. A gear box, characterized in that: It comprises a box body and the gear box cable installation assembly according to any one of claims 1 to 8, wherein the gear box cable installation assembly is connected to the box body.

10. A wind power generation system, characterized in that: It comprises the gearbox cable installation assembly according to any one of claims 1 to 8 or the gearbox according to claim 9.

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