Electric slip ring protection structure and operation machine

Abstract

The utility model relates to the technical field of power distribution structure protection of operation machinery, and discloses an electric slip ring protection structure and operation machinery, the electric slip ring protection structure comprises a swivel joint, the swivel joint comprises a joint stator and a joint rotor, the joint stator and the joint rotor are provided with communicated through holes, and the joint stator and the joint rotor are provided with through holes. The joint stator is suitable for being fixedly installed on a walking frame of the operation machine, and the joint rotor extends into a rotary platform of the operation machine and is fixedly connected with the rotary platform; a slip ring stator of the electric slip ring is located in the walking frame and fixedly connected with the connector stator, and a rotor wire harness of the electric slip ring penetrates through the through hole and extends into the rotary platform; the protection assembly is arranged on the rotary platform, surrounds the joint rotor and is suitable for covering a gap between the rotary platform and the joint rotor, and the problem that an operation machine cannot work normally due to the fact that an electric slip ring and related wire harnesses are damaged due to the influence of a watery and dusty environment and the influence of impact is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of protection of power distribution structures of operating machinery, in particular to an electric slip ring protection structure and an operating machinery. Background Art

[0002] Working machinery includes cranes, excavators, loaders, etc. The specific structure of working machinery generally includes a working device, a vehicle device and a traveling device. The working device is used to complete the specified working actions. The vehicle device has a cab and has equipment such as the main control unit of the equipment. The traveling device is used to drive the working machinery to move at the working site. In order to enable the working device to operate at more angles and make the working machinery more flexible, the vehicle devices of some working machinery are rotatably connected to the traveling device.

[0003] In the related art, in order to realize power transmission between the onboard device and the traveling device which are rotatably connected to each other, an electric slip ring needs to be used as a circuit connector between the onboard device and the traveling device.

[0004] However, due to the diversity of working environments of operating machinery, electric slip rings are often exposed to harsh environments with a lot of water and dust, and the operating machinery will inevitably experience bumps and collisions during operation. The above situations can easily lead to damage to the electric slip rings and affect the normal operation of the operating machinery. Utility Model Content

[0005] In view of this, the utility model provides an electric slip ring protection structure and an operating machine to solve the problem that the electric slip ring and related wiring harness are damaged by watery and dusty environments and impacts, resulting in the operating machine being unable to work normally.

[0006] In a first aspect, the utility model provides an electric slip ring protection structure, comprising: a swivel joint, comprising a joint stator and a joint rotor, wherein the joint stator and the joint rotor are provided with communicating through holes, the joint stator is suitable for being fixedly mounted on a traveling frame of an operating machine, the joint rotor extends into a swivel platform of the operating machine and is fixedly connected to the swivel platform; an electric slip ring, wherein the slip ring stator of the electric slip ring is located in the traveling frame and is fixedly connected to the joint stator, the rotor wiring harness of the electric slip ring passes through the through hole and extends into the swivel platform; a protection assembly, which is arranged on the swivel platform and surrounds the outside of the joint rotor, and is suitable for covering the gap between the swivel platform and the joint rotor.

[0007] Beneficial effects: by arranging a swivel joint on the traveling frame and extending the swivel joint to the swivel platform of the operating machine, the rotor harness of the electric slip ring is protected, and the rotor harness between the swivel platform and the traveling frame is reduced from being hit and being affected by water and dust. Since the slip ring stator of the electric slip ring is fixedly connected to the joint stator, the swivel joint protects the part above the slip ring stator to prevent dust and moisture from invading from above the slip ring stator. By arranging a protection component, the connection between the swivel joint and the swivel platform is sealed and protected, thereby preventing dust and moisture from entering the swivel platform through the connection gap between the swivel joint and the swivel platform and contacting the rotor harness, thereby realizing the protection function of the electric slip ring and the line.

[0008] In an optional embodiment, the protection component includes a protection cover, the protection cover is provided with a clearance hole for the joint rotor to pass through, and the protection cover is sleeved on the portion of the joint rotor extending into the rotary platform through the clearance hole.

[0009] Beneficial effect: By setting up a protective cover to shield the annular gap between the swivel joint and the swivel platform, most of the splashing water and dust are blocked from entering the swivel platform, achieving a protective and shielding effect.

[0010] In an optional embodiment, the protective cover includes two semicircular cover plates, each of which is provided with a clearance groove, and the two clearance grooves are connected to form the clearance hole.

[0011] Beneficial effect: By configuring the protective cover to consist of two semicircular cover plates, it is easy to install and disassemble. When the electric slip ring is repaired, the two cover plates can be removed from both sides to operate the wiring harness at the rotary platform, which improves convenience.

[0012] In an optional embodiment, the protective assembly further includes a sealing gasket mounted on the upper surface of the protective cover, the outer peripheral side wall of the joint rotor is provided with an annular sealing groove, the inner ring of the sealing gasket extends into the sealing groove and is fastened at the connection by a first clamp.

[0013] Beneficial effect: By arranging a sealing gasket on the protective cover and arranging a clamp to tightly combine the sealing gasket with the peripheral side of the joint rotor, the sealing at the gap between the rotating platform and the joint rotor is further strengthened, preventing the possibility of moisture and dust entering from the lower side of the rotating platform, thereby improving the protection effect.

[0014] In an optional embodiment, the protective assembly further comprises a plurality of arc pressure plates, which are arranged on the upper surface of the outer ring of the sealing gasket and connected to the protective cover via fasteners, and the plurality of arc pressure plates are distributed in a circular array on the circumferential side of the joint rotor.

[0015] Beneficial effect: The sealing gasket is pressed against the protective cover by arranging an arc-shaped pressure plate, so that the protective cover and the sealing gasket fit better, further ensuring the sealing effect, and preventing the sealing gasket from being separated from the protective cover due to the vibration of the operating machinery during operation, thereby improving the structural reliability.

[0016] In an optional embodiment, at least one of the arc-shaped pressure plates spans across the joint between the two cover plates.

[0017] Beneficial effect: Since there is at least one arc-shaped pressure plate spanning the joint between the two cover plates, when the arc-shaped pressure plate is connected to the protective cover through fasteners, it can not only compress the sealing gasket, but also limit and fix the two cover plates, avoiding the possibility of the gap between the cover plates expanding due to vibration, thereby further improving the reliability of the structure.

[0018] In an optional embodiment, a shift fork is fixedly mounted on the upper end of the swivel joint, and an extended end of the shift fork is fixedly connected to the swivel platform of the operating machine.

[0019] Beneficial effect: The joint rotor of the swivel joint is connected to the swivel platform through the shift fork, so that the joint rotor rotates with the swivel platform. At the same time, the shift fork can connect and fix the joint rotor to a structure farther away on the swivel platform, increasing the optional range of specific installation positions between the joint rotor and the swivel platform, thereby reducing the possibility of structural interference.

[0020] In an optional embodiment, a protection tube is further included, wherein the protection tube is connected to the upper end of the joint rotor and communicates with the through hole, and the rotor wiring harness of the electric slip ring extends into the protection tube.

[0021] Beneficial effect: By providing a protective tube, the rotor harness is further isolated from the outside world, reducing the chance of the rotor harness coming into contact with dust or moisture, thereby improving the protection capability.

[0022] In an optional implementation, the protection tube is installed on the fork, and a second clamp is sleeved at the installation location.

[0023] Beneficial effect: The protective tube is connected to the shift fork so that the protective tube is arranged around the circumference of the rotor harness, and a second clamp is arranged at the connection between the protective tube and the shift fork, thereby improving the sealing between the shift fork and the protective tube and further reducing the possibility of the rotor harness contacting with dust and moisture.

[0024] In a second aspect, the utility model further provides an operating machine, comprising: a traveling frame; a slewing platform rotatably connected to the upper side of the traveling frame; and the above-mentioned electric slip ring protection structure installed between the traveling frame and the slewing platform.

[0025] Beneficial effects: Since the slip ring stator of the electric slip ring is installed on the traveling frame, space is saved for the vehicle mounting device on the slewing platform and the assembly difficulty is reduced. In addition, a slewing joint is arranged on the traveling frame, and the slip ring stator of the electric slip ring is installed on the lower side of the joint stator of the slewing joint, and the connection between the slip ring stator of the electric slip ring and the rotor harness is protected from water, dust and collision. The part of the rotor harness between the slewing platform and the traveling frame is protected from collision through the slewing joint, and the connection gap between the slewing joint and the slewing platform is protected through the protective component, so as to reduce the possibility of water and dust entering the slewing platform and affecting the rotor harness, effectively protect the electric slip ring from water, dust and collision, reduce the failure rate, and improve the continuous working ability and reliability of the operating machinery. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of a slip ring protection structure of an embodiment of the utility model, which is used to reflect the positional relationship and structure between the slewing platform and the traveling frame of the working machine;

[0028] Figure 2 This is a schematic diagram of a slip ring protection structure for reflecting the position structure of a protection tube, a protection cover and a sealing pad in an embodiment of the utility model.

[0029] Description of reference numerals:

[0030] 1. Protective tube; 2. Second clamp; 3. First clamp; 4. Sealing pad; 5. Rotary joint; 51. Joint rotor; 52. Joint stator; 6. Rotary platform; 7. Electric slip ring; 8. Fork; 9. Protective cover; 10. Traveling frame; 11. Rotor wiring harness; 12. Arc pressure plate; 13. Slip ring stator. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0032] Operating machinery includes cranes, excavators, loaders, etc. In the past, they were usually equipped with diesel engines as a power source. With the development of new energy, operating machinery driven by electricity has gradually become the mainstream.

[0033] An operating machine generally includes a working device, a vehicle device and a traveling device. An electric slip ring is required to transmit power and electrical signals between the vehicle device and the traveling device. Since the working environment of the operating machine is relatively complex, the electric slip ring structure is often exposed to a watery and dusty environment, and may be hit by splashes, resulting in electric slip ring failure, which affects the normal operation of the operating machine.

[0034] The utility model proposes a protective structure for an electric slip ring, which arranges a slip ring stator of the electric slip ring in a traveling frame, utilizes the rigid structure of the traveling frame to provide collision protection for the electric slip ring, provides collision protection for a rotor harness through a swivel joint and a swivel platform, and then provides waterproof and dustproof protection for various parts of the electric slip ring structure through a swivel joint, a protective assembly and a protective tube, thereby reducing the failure rate of the electric slip ring and enabling the operating machinery to continue to work more efficiently and reliably.

[0035] Combine the following Figure 1 to Figure 2 , describing an embodiment of the utility model.

[0036] For the convenience of description, in the following embodiments, each technical feature is represented by Figure 1 The direction in which the rotating platform 6 is away from the traveling frame 10 is referred to as “upper”, and the direction in which the rotating platform 6 is closer to the traveling frame 10 is referred to as “lower”.

[0037] According to an embodiment of the present invention, on the one hand, an electric slip ring protection structure is provided, see Figure 1 An electric slip ring protection structure includes a rotary joint 5, an electric slip ring 7 and a protection component. Specifically, the rotary joint 5 includes a joint stator 52, a joint rotor 51 and a through hole penetrating the joint stator 52 and the joint rotor 51, the joint stator 52 is suitable for being fixedly installed on the traveling frame 10 of the working machine, the joint rotor 51 extends into the rotating platform 6 of the working machine and is fixedly connected to the rotating platform 6; the slip ring stator 13 of the electric slip ring 7 is located in the traveling frame 10 and is fixedly connected to the joint stator 52, the rotor harness 11 of the electric slip ring 7 passes through the through hole and extends into the rotating platform 6; the protection component is arranged on the rotating platform 6 and is arranged around the joint rotor 51, suitable for covering the gap between the rotating platform 6 and the joint rotor 51.

[0038] It should be noted that the present embodiment does not limit the specific form of the protective component. The function of the protective component is to cover the gap between the rotating platform 6 and the joint rotor 51 to prevent dust and moisture from passing through the gap. Structures that can achieve this function, such as sealing gaskets, sealing rings, sealing covers and sealant filling structures, are all within the protection scope of the present embodiment.

[0039] In this embodiment, by arranging a swivel joint 5 on the traveling frame 10 and extending the swivel joint 5 to the swivel platform 6 of the working machine, the rotor harness 11 of the electric slip ring 7 is protected, and the part of the rotor harness 11 between the swivel platform 6 and the traveling frame 10 is reduced from being hit and being affected by water and dust. Since the slip ring stator 13 of the electric slip ring 7 is fixedly connected to the joint stator 52, the swivel joint 5 protects the part above the slip ring stator 13 to prevent dust and moisture from invading from above the slip ring stator 13. By arranging a protection component, the connection between the swivel joint 5 and the swivel platform 6 is sealed and protected, thereby preventing dust and moisture from entering the swivel platform 6 from the connection gap between the swivel joint 5 and the swivel platform 6 and contacting the rotor harness 11, thereby realizing the protection function of the electric slip ring 7 and the line.

[0040] See also Figure 2 In one embodiment, the protection assembly includes a protection cover 9, which is provided with a clearance hole for the joint rotor 51 to pass through, and the protection cover 9 is sleeved on the portion of the joint rotor 51 extending into the rotary platform 6 through the clearance hole.

[0041] Specifically, the protective cover 9 is circular and connected to the rotary platform 6 via fasteners. The fasteners are arranged in a circular array around the center of the protective cover 9 and are evenly distributed on the circumference of the joint rotor 51 .

[0042] In this embodiment, a protective cover 9 is provided to shield the annular gap between the swivel joint 5 and the swivel platform 6, thereby preventing most of the splashing water and dust from entering the swivel platform 6, thereby achieving a protective and safety effect.

[0043] In a specific embodiment, the protective cover 9 includes two semicircular cover plates, each of which is provided with a clearance groove, and the two clearance grooves are connected to form a clearance hole.

[0044] In this embodiment, the protective cover 9 is configured to be composed of two semicircular cover plates, which is convenient for installation and disassembly. When the electric slip ring 7 is inspected and repaired, the two cover plates can be removed from both sides to operate the wiring harness at the rotating platform 6, thereby improving convenience.

[0045] Of course, in other embodiments, the protective cover 9 can also be provided in three parts, four parts, etc., and can be assembled into a circle. It can be set according to actual needs, and will not be elaborated in detail here.

[0046] In one embodiment, the protective assembly further includes a sealing gasket 4, which is mounted on the upper surface of the protective cover 9. The outer peripheral side wall of the joint rotor 51 is provided with an annular sealing groove. The inner ring of the sealing gasket 4 extends into the sealing groove and is fastened at the connection by the first clamp 3.

[0047] Specifically, the sealing gasket 4 can be a rubber gasket made of rubber material, or it can be made of other materials. The edge of the sealing gasket 4 is disc-shaped and flat on the upper side of the protective cover 9. It bulges upward near the inner side of the rotary joint 5 and is attached to the peripheral side of the joint rotor 51, and extends into the sealing groove of the joint rotor 51.

[0048] It should be noted that the first clamp 3 may be a T-shaped clamp. In some embodiments not shown, the first clamp 3 may also be other types of clamps.

[0049] In this embodiment, by providing a sealing gasket 4 on the protective cover 9 and providing a clamp to tightly combine the sealing gasket 4 with the circumferential side of the joint rotor 51, the sealing at the gap between the rotating platform 6 and the joint rotor 51 is further strengthened, preventing the possibility of moisture and dust entering from the lower side of the rotating platform 6, thereby improving the protection effect.

[0050] In one embodiment, the protective assembly further includes a plurality of arc pressure plates 12 , which are disposed on the upper surface of the outer ring of the sealing gasket 4 and connected to the protective cover 9 via fasteners. The plurality of arc pressure plates 12 are distributed in a circular array on the circumferential side of the joint rotor 51 .

[0051] It should be noted that the present embodiment does not limit the number of arc-shaped pressure plates 12. A plurality of arc-shaped pressure plates 12 are arranged to form a ring and are fixedly connected to the protective cover 9 by fasteners. The fasteners pass through the sealing gasket 4 and are connected to the surface of the protective cover 9. At least two fasteners are arranged on each arc-shaped pressure plate 12 and are evenly distributed along the arc-shaped trajectory of the arc-shaped pressure plate 12.

[0052] In this embodiment, the sealing gasket 4 is pressed against the protective cover 9 by providing an arc-shaped pressure plate 12, so that the protective cover 9 and the sealing gasket 4 fit better, further ensuring the sealing effect and preventing the sealing gasket 4 from being separated from the protective cover due to the vibration of the operating machinery during operation, thereby improving the structural reliability.

[0053] In one embodiment, at least one arc-shaped pressure plate 12 spans across the joint between two cover panels.

[0054] In the present embodiment, since there is at least one arc-shaped pressure plate 12 spanning the joint between the two cover plates, when the arc-shaped pressure plate 12 is connected to the protective cover 9 through fasteners, it can not only compress the sealing gasket 4, but also limit and fix the two cover plates, thereby avoiding the possibility of the gap between the cover plates being expanded due to vibration, and further improving the reliability of the structure.

[0055] In some of the above embodiments, specifically, the joint stator 52 is located at the lower side of the joint rotor 51, a mounting plate is provided on the traveling frame 10, the joint stator 52 is fixedly installed with the mounting plate by fasteners, the slip ring stator 13 of the electric slip ring 7 is installed at the lower side of the joint stator 52 and is coaxially arranged with the joint stator 52, the rotor harness 11 extends from the upper side of the slip ring stator 13 and penetrates into the through hole of the rotary joint 5. The joint stator 52 is fixedly connected with the slip ring stator 13 and a sealing structure is provided to prevent the entry of dust or moisture, and the sealing structure can be a sealing ring, or a structure with a sealing function such as a sealant or a sealing cover.

[0056] In one embodiment, a shift fork 8 is fixedly mounted on the upper end of the joint rotor 51 , and an extended end of the shift fork 8 is fixedly connected to the rotary platform 6 of the working machine.

[0057] Specifically, the shift fork 8 is fixedly connected to the joint rotor 51, the joint rotor 51 of the rotary joint 5 is fixedly connected to the rotary platform 6 through the shift fork 8, and the joint stator 52 is fixedly connected to the walking frame 10. At the same time, a connecting pin is provided on the inner side of the joint rotor 51, and the connecting pin is fixed to the rotor wiring harness 11, so that when the joint rotor 51 rotates with the rotary platform 6, the rotor wiring harness 11 on the inside is synchronously driven to rotate.

[0058] In this embodiment, the joint rotor 51 of the rotary joint 5 is connected to the rotary platform 6 by the fork 8, so that the joint rotor 51 rotates with the rotary platform 6. At the same time, the fork 8 can connect and fix the joint rotor 51 to a structure farther away on the rotary platform 6, thereby increasing the optional range of specific installation positions between the joint rotor 51 and the rotary platform 6, thereby reducing the possibility of structural interference.

[0059] In one embodiment, a protection tube 1 is further included. The protection tube 1 is connected to the upper end of the joint rotor 51 and communicated with the through hole. The rotor harness 11 of the electric slip ring 7 extends into the protection tube 1 .

[0060] It should be noted that the present embodiment does not limit the specific form of the protection tube 1 , and the protection tube 1 may be a corrugated tube. In some embodiments not shown, the protection tube 1 may also be a metal sleeve, a plastic hard tube or other pipe fittings.

[0061] In this embodiment, the protective tube 1 is provided to further isolate the rotor harness 11 from the outside world, thereby reducing the chance of the rotor harness 11 coming into contact with dust or moisture, thereby improving the protection capability.

[0062] In one embodiment, the protection tube 1 is installed on the fork 8, and a second clamp 2 is sleeved on the installation position.

[0063] In this embodiment, the protective tube 1 is connected to the fork 8 so that the protective tube 1 is arranged around the circumference of the rotor harness 11, and a second clamp 2 is provided at the connection between the protective tube 1 and the fork 8, thereby improving the sealing between the fork 8 and the protective tube 1 and further reducing the possibility of the rotor harness 11 coming into contact with dust and moisture.

[0064] It should be noted that the second clamp 2 may be a T-shaped clamp, or in some embodiments not shown, may be other types of clamps.

[0065] In some of the above embodiments, it should be noted that the structure for anti-collision protection of the electric slip ring 7 includes a traveling frame 10, a swivel joint 5 and a swivel platform 6, and the swivel joint 5 is installed on the upper side of the slip ring stator 13 and connected to the swivel platform 6, and then shielded and sealed by a protective component, thereby achieving waterproof and dustproof. At the same time, the provision of the protective tube 1 further enhances the waterproof and dustproof effect, thereby providing all-round protection for the electric slip ring 7.

[0066] According to an embodiment of the utility model, on the other hand, a working machine is also provided, comprising a traveling frame 10; a rotating platform 6, rotatably connected to the upper side of the traveling frame 10; and the above-mentioned electric slip ring protection structure, installed between the traveling frame 10 and the rotating platform 6.

[0067] It should be noted that operating machinery includes but is not limited to excavators, cranes, pile drivers, etc.

[0068] Taking an excavator as an example, the traveling frame 10 is an X-shaped traveling frame 10, a mounting ring suitable for connecting the vehicle device is provided on the traveling frame 10, the swivel joint 5 is coaxially arranged with the mounting ring, and the electric slip ring 7 is located inside the mounting ring, and the bottom wall and side wall of the traveling frame 10 provide collision protection for the electric slip ring 7. The mounting plate and the swivel joint 5 arranged on the mounting ring form a suspension structure for the installation of the electric slip ring 7, which effectively reduces the vibration at the electric slip ring 7 and further reduces the failure rate.

[0069] In this embodiment, since the slip ring stator 13 of the electric slip ring 7 is installed on the traveling frame 10, space is saved for the boarding device on the rotary platform 6, and the assembly difficulty is reduced. In addition, a rotary joint 5 is arranged on the traveling frame 10, and the slip ring stator 13 of the electric slip ring 7 is installed on the lower side of the joint stator 52 of the rotary joint 5, the connection between the slip ring stator 13 of the electric slip ring 7 and the rotor harness 11 is waterproof, dustproof and anti-collision protected, and then the part of the rotor harness 11 located between the rotary platform 6 and the traveling frame 10 is protected against collision by the rotary joint 5, and the connection gap between the rotary joint 5 and the rotary platform 6 is protected by the protective component, so as to reduce the possibility of water and dust entering the rotary platform 6 and affecting the rotor harness 11, effectively protect the electric slip ring 7 from water, dust and collision, reduce the failure rate, and improve the continuous working ability and reliability of the operating machinery.

[0070] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An electric slip ring protection structure, characterized in that: include: A swivel joint (5), comprising a joint stator (52) and a joint rotor (51), wherein the joint stator (52) and the joint rotor (51) are provided with communicating through holes, wherein the joint stator (52) is suitable for being fixedly mounted on a traveling frame (10) of an operating machine, and the joint rotor (51) extends into a swivel platform (6) of the operating machine and is fixedly connected to the swivel platform (6); An electric slip ring (7), wherein a slip ring stator (13) of the electric slip ring (7) is located in the traveling frame (10) and is fixedly connected to the joint stator (52), and a rotor harness (11) of the electric slip ring (7) passes through the through hole and extends into the rotary platform (6); The protection component is arranged on the rotating platform (6) and surrounds the joint rotor (51), and is suitable for covering the gap between the rotating platform (6) and the joint rotor (51).

2. The electric slip ring protection structure according to claim 1, characterized in that: The protection assembly comprises a protection cover (9), the protection cover (9) is provided with a clearance hole for the joint rotor (51) to pass through, and the protection cover (9) is sleeved on the portion of the joint rotor (51) extending into the rotary platform (6) through the clearance hole.

3. The electric slip ring protection structure according to claim 2, characterized in that: The protective cover (9) comprises two semicircular cover plates, each of which is provided with a clearance groove, and the two clearance grooves are butted together to form the clearance hole.

4. The electric slip ring protection structure according to claim 3, characterized in that: The protective assembly also includes a sealing gasket (4), which is installed on the upper surface of the protective cover (9). The outer peripheral side wall of the joint rotor (51) is provided with an annular sealing groove, and the inner ring of the sealing gasket (4) extends into the sealing groove and is fastened at the connection point by a first clamp (3).

5. The electric slip ring protection structure according to claim 4, characterized in that: The protection component also includes a plurality of arc-shaped pressure plates (12), which are arranged on the upper surface of the outer ring of the sealing gasket (4) and connected to the protection cover (9) via fasteners. The plurality of arc-shaped pressure plates (12) are distributed in a circular array on the circumferential side of the joint rotor (51).

6. The electric slip ring protection structure according to claim 5, characterized in that: At least one of the arc-shaped pressing plates (12) spans across the joint between the two cover plates.

7. The electric slip ring protection structure according to any one of claims 1 to 6, characterized in that: A shift fork (8) is fixedly mounted on the upper end of the joint rotor (51), and an extended end of the shift fork (8) is fixedly connected to a rotary platform (6) of the operating machine.

8. The electric slip ring protection structure according to claim 7, characterized in that: It also comprises a protection tube (1), the protection tube (1) being connected to the upper end of the joint rotor (51) and communicating with the through hole, and the rotor wire harness (11) of the electric slip ring (7) extending into the protection tube (1).

9. The electric slip ring protection structure according to claim 8, characterized in that: The protection tube (1) is installed on the shift fork (8), and a second clamp (2) is sleeved on the installation position.

10. A working machine, characterized in that: include: Walking frame (10); A rotary platform (6) is rotatably connected to the upper side of the walking frame (10) ； The electric slip ring protection structure according to any one of claims 1 to 9 is installed between the walking frame (10) and the rotating platform (6).

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