Multilayer pneumoelectric combined slip ring

Abstract

The utility model relates to the technical field of equipment accessories, and discloses a multilayer pneumoelectric combined slip ring. The pneumatic-electric combined slip ring comprises a main shaft, a first electric slip ring shaft, a first electric slip ring shell, a pneumatic slip ring shell, a collecting ring, a contact brush head and a sealing pressing plate, the main shaft is provided with a gas channel and a wire channel, the first electric slip ring shaft is sleeved on the main shaft, the collecting ring is sleeved on the first electric slip ring shaft, the first electric slip ring shell is sleeved on the main shaft, and the contact brush head is sleeved on the pneumatic slip ring shell. The contact brush head is arranged on the first electric slip ring shell in a penetrating mode and abuts against the collecting ring, the main shaft is sleeved with the air slip ring shell, and an air guide cavity is formed between the air slip ring shell and the main shaft. When the pneumoelectric combined type slip ring works, the first electric slip ring shell and the pneumatic slip ring shell rotate around the main shaft, a circuit is led out from the contact brush head on the first electric slip ring shell, a gas circuit is led out from the gas outlet hole of the pneumatic slip ring shell to supply power, gas or electric signals to synchronously rotating equipment parts, and the pneumoelectric combined type slip ring is simple in structure and convenient to install and use.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of equipment accessories, and in particular to a multi-layer gas-electric combined slip ring. Background Art

[0002] Some electrical components of production equipment, such as the needle cylinder, dust removal mechanism, cloth winding mechanism of circular knitting machines, need to keep rotating during operation. The pneumatic slip ring is an equipment accessory that supplies power, air, and electrical signals to the rotating electric and pneumatic components.

[0003] The inventor of the present application has found that currently the power supply and air supply structures of the rotating mechanism components of the circular knitting machine are designed separately, the air supply and power supply structures occupy a large space, and have a complex structure and are not convenient to install. Utility Model Content

[0004] The utility model aims to provide a multi-layer gas-electric combined slip ring to solve the problems in the above-mentioned background technology.

[0005] The utility model embodiment provides a multi-layer gas-electric combined slip ring, comprising: a main shaft, a first electric slip ring shaft, a first electric slip ring housing, a gas slip ring housing, a collector ring, a contact brush head and a sealing pressure plate;

[0006] The main shaft is fixedly arranged;

[0007] The main shaft is provided with a gas channel and a wire channel, and the gas channel and the wire channel respectively form a gas inlet and a wire inlet on the end surface of the main shaft;

[0008] The first electric slip ring shaft is made of insulating material and is fixedly sleeved on the main shaft. The first electric slip ring shaft is provided with a wire through hole connected to the wire channel. The wire channel and the wire through hole are used for the wire to pass through.

[0009] The collector ring is mounted on the first electric slip ring shaft and is electrically connected to an external power source via a wire;

[0010] The first electric slip ring housing is rotatably sleeved on the main shaft, located on the outside of the first electric slip ring shaft, and wraps the first electric slip ring shaft. The first electric slip ring housing is used for transmission connection with an external driving mechanism;

[0011] The contact brush head is disposed on the first electrical slip ring housing and abuts against the collector ring for power supply;

[0012] The gas slip ring housing is sleeved on the outside of the main shaft and is fixedly connected to the first electric slip ring housing. An air guide cavity is formed between the gas slip ring housing and the main shaft, and the air guide cavity is connected to the gas channel.

[0013] The air sliding ring housing is provided with an air outlet hole communicating with the air guide cavity, and the air outlet hole is used to be connected to the air pipe;

[0014] The sealing pressure plate is sleeved on the main shaft and connected to the gas sliding ring housing to seal the gas guide cavity.

[0015] Based on the above scheme, it can be known that the multi-layer gas-electric combined slip ring of the utility model is provided with a main shaft, a first electric slip ring shaft, a first electric slip ring housing, a gas slip ring housing, a collector ring, a contact brush head and a sealing plate. The main shaft is provided with a gas channel and a wire channel. The first electric slip ring shaft is fixedly sleeved on the main shaft and provided with a wire through hole connected to the wire channel. The collector ring is sleeved on the first electric slip ring shaft. The first electric slip ring housing is sleeved on the main shaft. The contact brush head is penetrated on the first electric slip ring housing and abuts against the collector ring. The gas slip ring housing is sleeved on the outside of the main shaft and fixedly connected to the first electric slip ring housing. An air guide cavity is formed between the gas slip ring housing and the main shaft. The gas slip ring housing is provided with an air outlet connected to the air guide cavity. The sealing plate is sleeved on the main shaft. In the multi-layer gas-electric combined slip ring of the utility model, an external power supply is connected to the collector ring on the first electric slip ring shaft through a wire, and external high-pressure gas enters the air guide cavity between the gas slip ring housing and the main shaft through the gas channel. During operation, the first electric slip ring housing and the air slip ring housing rotate around the main shaft under the action of an external driving mechanism, the circuit is led out from the contact brush head on the first electric slip ring housing, and the air circuit is led out from the air outlet of the air slip ring housing to supply power, air, or electrical signals to synchronously rotating equipment parts. The structure is simple and easy to install and use, and can be applied to rotating mechanisms that need to supply power, receive electrical signals, and supply air.

[0016] In a feasible solution, the first electric slip ring housing is arranged on the main shaft via a bearing.

[0017] In a feasible solution, a limiting spacer is provided between the bearing and the first electric slip ring shaft.

[0018] In a feasible solution, two collector rings are sleeved on the first electric slip ring shaft, and two contact brush heads are provided on the first electric slip ring housing, and the two contact brush heads are respectively abutted against the two collector rings.

[0019] In a feasible solution, the gas passage is provided with two;

[0020] The gas slip ring housing is provided with two;

[0021] The two gas sliding ring housings are sleeved up and down on the outside of the main shaft, the gas guide cavities of the two gas sliding ring housings are respectively connected with the two gas channels, and the two gas guide cavities are isolated by a sealing partition.

[0022] In a feasible solution, a sealing partition is provided between the gas slip ring housing and the first electric slip ring housing, and between the gas slip ring housing and the sealing pressure plate;

[0023] The sealing partition is made of polytetrafluoroethylene.

[0024] In a feasible solution, O-rings are provided between the gas slip ring housing and the first electric slip ring housing, between the gas slip ring housing and the sealing pressure plate, and between the two gas slip ring housings.

[0025] In a feasible solution, it also includes: a second electric slip ring shaft and a second electric slip ring housing;

[0026] The second electric slip ring shaft is fixedly sleeved on the main shaft, and a plurality of collector rings are sleeved on the second electric slip ring shaft;

[0027] The second electric slip ring housing is sleeved on the outer side of the second electric slip ring shaft and connected to the first electric slip ring housing;

[0028] A plurality of contact brush heads are provided on the second electric slip ring housing and are respectively in contact with collector rings on the second electric slip ring shaft.

[0029] In a feasible solution, the gas passages are provided with four;

[0030] The gas slip ring housing is provided with four;

[0031] The four gas sliding ring housings are sleeved up and down on the outside of the main shaft, the gas guide cavities of the four gas sliding ring housings are respectively connected with the four gas channels, and two adjacent gas guide cavities are isolated by a sealing partition. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0033] Figure 1 It is a schematic diagram of a multi-layer gas-electric combined slip ring in the first embodiment of the utility model;

[0034] Figure 2 It is a cross-sectional schematic diagram of the gas-electric combined slip ring in the first embodiment of the utility model;

[0035] Figure 3 Another cross-sectional schematic diagram of the gas-electric combined slip ring in the first embodiment of the utility model;

[0036] Figure 4 It is a schematic diagram of the gas-electric combined slip ring in the second embodiment of the utility model;

[0037] Figure 5 It is a cross-sectional schematic diagram of the gas-electric combined slip ring in the second embodiment of the utility model;

[0038] Figure 6 Another cross-sectional schematic diagram of the gas-electric combined slip ring in the second embodiment of the utility model;

[0039] Figure 7 It is a cross-sectional schematic diagram of the gas-electric combined slip ring in the third embodiment of the utility model;

[0040] Figure 8 It is another cross-sectional schematic diagram of the gas-electric combined slip ring in the third embodiment of the utility model.

[0041] Numbers in the figure:

[0042] 1. Main shaft; 11. Gas channel; 12. Wire channel; 201. Wire through hole; 21. First electric slip ring shaft; 22. First electric slip ring housing; 3. Gas slip ring housing; 301. Gas guide cavity; 31. Air outlet; 32. Sealing partition; 33. O-ring; 4. Collector ring; 5. Contact brush head; 6. Sealing pressure plate; 7. Fixing screw; 81. Bearing; 82. Limiting spacer; 91. Second electric slip ring shaft; 92. Second electric slip ring housing. DETAILED DESCRIPTION

[0043] 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 of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The following specific embodiments are used to describe the technical solution of the utility model in detail. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0047] As described in the background technology of this application, some electrical components of production equipment, such as the needle cylinder, dust removal mechanism, cloth winding mechanism, etc. of the circular knitting machine, need to keep rotating during operation. The air and electric slip rings are equipment accessories that supply power, air, and electrical signals to the rotating electric and pneumatic components.

[0048] The inventor of the present application has found that currently the power supply and air supply structures of the rotating mechanism components of the circular knitting machine are designed separately, the air supply and power supply structures occupy a large space, and have a complex structure and are not convenient to install.

[0049] In order to solve the above problems, the inventor of the present application proposed the technical solution of the present application, and the specific embodiments are as follows:

[0050] Embodiment 1

[0051] Figure 1 This is a schematic diagram of a multi-layer gas-electric combined slip ring in Embodiment 1 of the present utility model. Figure 2 Schematic cross-sectional view of the gas-electric combined slip ring in the first embodiment of the utility model. Figure 3 It is another cross-sectional schematic diagram of the gas-electric combined slip ring in the first embodiment of the utility model.

[0052] like Figures 1 to 3 As shown, the multi-layer gas-electric combined slip ring of this embodiment includes: a main shaft 1, a first electric slip ring shaft 21, a first electric slip ring housing 22, a gas slip ring housing 3, a collector ring 4, a contact brush head 5 and a sealing pressure plate 6.

[0053] The main shaft 1 is fixedly arranged, for example, fixedly arranged on a frame of a circular knitting machine.

[0054] A gas channel 11 and a wire channel 12 are provided inside the main shaft 1 . The gas channel 11 of the main shaft 1 forms a gas inlet at the end face of the main shaft 1 , and the wire channel 12 of the main shaft 1 forms a wire inlet at the end face of the main shaft 1 .

[0055] The first electric slip ring shaft 21 is made of non-conductive insulating material and is fixedly sleeved on the circumferential outer wall of the main shaft 1. The circumferential side wall of the first electric slip ring shaft 21 is provided with a wire through hole 201, which is connected to the wire channel 12 of the main shaft 1 for the wire to pass through.

[0056] The collector ring 4 is a copper ring with excellent electrical conductivity. The collector ring 4 is sleeved and embedded on the circumferential outer wall of the first electric slip ring shaft 21 and is located at the wire through hole 201 of the first electric slip ring shaft 21. The wire is passed through the wire through hole 201 of the first electric slip ring shaft 21 and the wire channel 12 of the main shaft 1. One end of the wire is electrically connected to the collector ring 4, and the other end is electrically connected to the external power supply, so that the collector ring 4 is conductive.

[0057] The first electric slip ring housing 22 is rotatably sleeved on the main shaft 1 and is located outside the circumference of the first electric slip ring shaft 21. The first electric slip ring housing 22 shields and wraps the first electric slip ring shaft 21 and the collector ring 4. The first electric slip ring housing 22 is transmission-connected to the driving mechanism of the circular knitting machine, and rotates synchronously with the needle cylinder, electric and pneumatic components of the circular knitting machine during operation.

[0058] The contact brush head 5 is arranged on the circumferential side wall of the first electric slip ring housing 22, the inner end of the contact brush head 5 contacts and abuts against the surface of the collector ring 4, and the outer end is used to connect with the wire to lead out the circuit to power the rotating electric parts of the circular knitting machine and provide electrical signals. Of course, along the circumferential direction of the collector ring 4, multiple contact brush heads 5 can be arranged on the first electric slip ring housing 22 at intervals.

[0059] The gas slip ring housing 3 is sleeved on the outer side of the circumference of the main shaft 1 . The gas slip ring housing 3 is fixedly connected to the first electric slip ring housing 22 through fixing screws 7 . When the first electric slip ring housing 22 rotates, it drives the gas slip ring housing 3 to rotate synchronously.

[0060] An air guiding cavity 301 is formed between the circumferential inner wall of the gas slip ring housing 3 and the circumferential outer wall of the main shaft 1 , and the air guiding cavity 301 is connected to the gas channel 11 of the main shaft 1 .

[0061] The circumferential side wall of the air slip ring housing 3 is provided with an air outlet 31 connected to the air guide cavity 301. The air outlet 31 of the air slip ring housing 3 is used to connect with the air pipe to lead out the air path to supply air to the rotating pneumatic parts of the circular knitting machine.

[0062] The sealing pressure plate 6 is sleeved on the main shaft 1, located below the gas slip ring housing 3, and abuts against the gas slip ring housing 3. The sealing pressure plate 6 is fixedly connected to the gas slip ring housing 3 and the first electric slip ring housing 22 through fixing screws 7, and the sealing pressure plate 3 seals the air guide cavity 301 of the gas slip ring housing 3.

[0063] In this embodiment, the wire is inserted into the wire through hole of the first electric slip ring shaft and the wire channel of the main shaft, one end of the wire is electrically connected to the collector ring, and the other end of the wire is electrically connected to the external power supply, so that the collector ring is conductive. When the first electric slip ring housing rotates around the main shaft, the contact brush head contacts the collector ring and slides around the collector ring, and the wire (circuit) is led out from the contact brush head to supply power to the electric component (load) that needs to rotate synchronously.

[0064] An air guide cavity is formed between the air slip ring housing and the main shaft, and the external compressed gas enters the air guide cavity from the gas channel of the main shaft. One end of the air pipe (air path) is connected to the air outlet of the air slip ring housing, and the other end is connected to the pneumatic component (load), which can supply air to the pneumatic component (load) that needs to rotate synchronously.

[0065] It is not difficult to find from the above content that the multi-layer gas-electric combined slip ring of this embodiment is provided with a main shaft, a first electric slip ring shaft, a first electric slip ring housing, a gas slip ring housing, a collector ring, a contact brush head and a sealing plate. The main shaft is provided with a gas channel and a wire channel. The first electric slip ring shaft is fixedly sleeved on the main shaft and provided with a wire through hole connected to the wire channel. The collector ring is sleeved on the first electric slip ring shaft. The first electric slip ring housing is sleeved on the main shaft. The contact brush head is penetrated on the first electric slip ring housing and abuts against the collector ring. The gas slip ring housing is sleeved on the outside of the main shaft and fixedly connected to the first electric slip ring housing. An air guide cavity is formed between the gas slip ring housing and the main shaft. The gas slip ring housing is provided with an air outlet connected to the air guide cavity. The sealing plate is sleeved on the main shaft. In the multi-layer gas-electric combined slip ring of this embodiment, an external power source is connected to the collector ring on the first electric slip ring shaft through a wire, and external high-pressure gas enters the air guide cavity between the gas slip ring housing and the main shaft through the gas channel. During operation, the first electric slip ring housing and the air slip ring housing rotate around the main shaft under the action of an external driving mechanism, the circuit is led out from the contact brush head on the first electric slip ring housing, and the air circuit is led out from the air outlet of the air slip ring housing to supply power, air, or electrical signals to synchronously rotating equipment parts. The structure is simple and easy to install and use, and can be applied to rotating mechanisms that need to supply power, receive electrical signals, and supply air.

[0066] Optionally, in the multi-layer gas-electric combined slip ring in this embodiment, both ends of the first electric slip ring housing 22 are respectively arranged on the main shaft 1 through bearings 81 , so that the first electric slip ring housing 22 can rotate around the main shaft 1 .

[0067] Furthermore, in the multi-layer gas-electric combined slip ring of the present embodiment, a limiting spacer 82 is provided between the bearing 81 and the first electric slip ring shaft 21. The limiting spacer 82 is sleeved on the main shaft 1, and the end faces of both sides of the limiting spacer 82 are respectively against the bearing 81 and the first electric slip ring shaft 21, so that the first electric slip ring shaft 21 remains stable on the main shaft 1 and does not slide along the main shaft 1.

[0068] Furthermore, in the multi-layer gas-electric combined slip ring in this embodiment, two collector rings 4 are sleeved on the first slip ring shaft 21. The two collector rings 4 are sleeved and embedded on the circumferential outer wall of the first slip ring shaft 21 with an interval up and down, and are electrically connected to the external power supply through wires.

[0069] The first electric slip ring housing 21 is provided with two contact brush heads 5 , which are respectively in contact with and abut against the two collector rings 4 , forming a two-way electrical structure on the gas-electric slip ring.

[0070] Furthermore, in the multi-layer gas-electric combined slip ring of this embodiment, the main shaft 1 is provided with two gas channels 11 isolated from each other.

[0071] Two gas slip ring housings 3 are provided.

[0072] The two gas slip ring housings 3 are stacked up and down and sleeved on the outer side of the circumference of the main shaft 1, and are fixedly connected to the first electric slip ring housing 22 by fixing screws 7. The gas guide cavities 301 of the two gas slip ring housings 3 are respectively connected to the two gas channels 11 of the main shaft 1, and the gas guide cavities 301 of the two gas slip ring housings 3 are separated by a sealing partition 32 to form two independent sealed cavities. The compressed gas in the two gas guide cavities 301 can be transported separately without interference, forming a two-way independent gas structure on the gas electric slip ring.

[0073] Furthermore, in the multi-layer gas-electric combined slip ring in this embodiment, sealing partitions 32 are provided between the gas slip ring housing 3 and the first electric slip ring housing 22, and between the gas slip ring housing 3 and the sealing pressure plate 6, so that the gas guide cavity 301 of the gas slip ring housing 3 is more sealed.

[0074] The sealing partition 32 is made of polytetrafluoroethylene (PTFE), which has good sealing and self-lubricating properties, and has good properties such as wear resistance, high temperature resistance, and corrosion resistance, thereby ensuring the sealing of the air guide cavity 301 .

[0075] Furthermore, in the multi-layer gas-electric combined slip ring in this embodiment, O-rings 33 are provided between the gas slip ring housing 3 and the first electric slip ring housing 21, between the gas slip ring housing 3 and the sealing pressure plate 6, and between the two gas slip ring housings 3, so that the gas guide cavity 301 of the gas slip ring housing 3 is more sealed.

[0076] In this embodiment, two contact brush heads and two air slip ring housings form a 2-way electric + 2-way air gas-electric combined slip ring on the main shaft to meet the usage requirements of customers.

[0077] Embodiment 2

[0078] Figure 4 Schematic diagram of the gas-electric combined slip ring in the second embodiment of the utility model. Figure 5Schematic cross-sectional view of the gas-electric combined slip ring in the second embodiment of the utility model. Figure 6 This is another cross-sectional schematic diagram of the gas-electric combined slip ring in the second embodiment of the utility model. The second embodiment is an alternative to the first embodiment.

[0079] like Figures 4 to 6 As shown, the multi-layer gas-electric combined slip ring in this embodiment further includes: a second electric slip ring shaft 91 and a second electric slip ring housing 92 .

[0080] The second electric slip ring shaft 91 is also made of non-conductive insulating material and is fixedly sleeved on the main shaft 1 and located below the two gas slip ring housings 3. A plurality of (five) collector rings 4 are sleeved at intervals on the circumferential outer wall of the second electric slip ring shaft 91, and the plurality of collector rings 4 are electrically connected to an external power source through wires.

[0081] The second electric slip ring housing 92 is sleeved outside the circumference of the second electric slip ring shaft 91 and is located below the gas slip ring housing 3 and the sealing plate 6. The second electric slip ring housing 92 covers and shields the second electric slip ring shaft 91 and the collector ring 4. The second electric slip ring housing 92 and the gas slip ring housing 3 are fixedly connected to the first electric slip ring housing 22 through fixing screws 7, and rotate synchronously with the first electric slip ring housing 22.

[0082] The second electric slip ring housing 92 is provided with a plurality of (five) contact brush heads 5, which are spaced apart from each other and respectively contact and abut against a plurality of (five) collector rings 4 on the second electric slip ring shaft 91 to form a multi-path (five-path) electrical structure.

[0083] In this embodiment, two contact brush heads on the first electric slip ring housing, two air slip ring housings, and five contact brush heads on the second electric slip ring housing form a 2-way electric + 2-way air + 5-way electric air-electric combination slip ring on the main shaft to meet customer usage requirements.

[0084] Embodiment 3

[0085] Figure 7 This is a cross-sectional schematic diagram of the gas-electric combined slip ring in the third embodiment of the utility model. Figure 8 This is another cross-sectional schematic diagram of the gas-electric combined slip ring in the third embodiment of the utility model. The third embodiment is another alternative to the first embodiment.

[0086] like Figure 7 and Figure 8 As shown, in the multi-layer gas-electric combined slip ring of this embodiment, four gas channels 11 are provided in the main shaft 1, and the four gas channels 11 are isolated from each other. The four gas channels 11 form two gas inlets on the upper end surface of the main shaft 1 and two gas inlets on the lower end surface of the main shaft.

[0087] Four gas slip ring housings 3 are provided.

[0088] The four gas slip ring housings 3 are stacked up and down and sleeved on the outer side of the circumference of the main shaft 1 , and are fixedly connected to the first electric slip ring housing 22 by fixing screws, and rotate together with the first electric slip ring housing 22 .

[0089] The air guiding cavities 301 of the four air sliding ring housings 3 are respectively connected to the four gas channels 11 of the main shaft 1 , and the air guiding cavities 301 of two adjacent air sliding ring housings 3 are isolated by a sealing partition 32 to form four independent air guiding cavities 301 .

[0090] In this embodiment, two contact brush heads on the first electric slip ring housing and four air slip ring housings form a 2-way electric + 4-way air-gas combined slip ring on the main shaft to meet the usage requirements of customers.

[0091] The multi-layer gas-electric combined slip ring of the utility model is fixed on the fixed shaft through the hollow main shaft during installation. The electric slip ring shaft, the electric slip ring housing and the gas slip ring housing are assembled on the main shaft to form a gas-electric combined slip ring. The slip ring structure can be changed according to customer needs to form gas-electric combined structures with various configurations to meet the needs of different customers.

[0092] In the present invention, unless otherwise clearly specified and limited, a first feature being “on” or “under” a second feature may mean that the first feature and the second feature are in direct contact, or the first feature and the second feature are in indirect contact via an intermediate medium.

[0093] Moreover, the first feature being “above”, “above”, and “above” the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being “below”, “below”, and “below” the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0094] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A multi-layer gas-electric combined slip ring, characterized in that: include: A main shaft, a first electric slip ring shaft, a first electric slip ring housing, an air slip ring housing, a collector ring, a contact brush head and a sealing pressure plate; The main shaft is fixedly arranged; The main shaft is provided with a gas channel and a wire channel, and the gas channel and the wire channel respectively form a gas inlet and a wire inlet on the end surface of the main shaft; The first electric slip ring shaft is made of insulating material and is fixedly sleeved on the main shaft. The first electric slip ring shaft is provided with a wire through hole connected to the wire channel. The wire channel and the wire through hole are used for the wire to pass through. The collector ring is mounted on the first electric slip ring shaft and is electrically connected to an external power source via a wire; The first electric slip ring housing is rotatably sleeved on the main shaft, located on the outside of the first electric slip ring shaft, and wraps the first electric slip ring shaft. The first electric slip ring housing is used for transmission connection with an external driving mechanism; The contact brush head is disposed on the first electrical slip ring housing and abuts against the collector ring for power supply; The gas slip ring housing is sleeved on the outside of the main shaft and is fixedly connected to the first electric slip ring housing. An air guide cavity is formed between the gas slip ring housing and the main shaft, and the air guide cavity is connected to the gas channel. The air sliding ring housing is provided with an air outlet hole communicating with the air guide cavity, and the air outlet hole is used to be connected to the air pipe; The sealing pressure plate is sleeved on the main shaft and connected to the gas sliding ring housing to seal the gas guide cavity.

2. The multi-layer gas-electric combined slip ring according to claim 1, characterized in that: The first electric slip ring housing is arranged on the main shaft through a bearing.

3. The multi-layer gas-electric combined slip ring according to claim 2, characterized in that: A limiting spacer is provided between the bearing and the first electric slip ring shaft.

4. The multi-layer gas-electric combined slip ring according to any one of claims 1 to 3, characterized in that: Two collector rings are sleeved on the first electric slip ring shaft, and two contact brush heads are provided on the first electric slip ring housing. The two contact brush heads are respectively abutted against the two collector rings.

5. The multi-layer gas-electric combined slip ring according to claim 4, characterized in that: The gas passages are provided with two; The gas slip ring housing is provided with two; The two gas sliding ring housings are sleeved up and down on the outside of the main shaft, the gas guide cavities of the two gas sliding ring housings are respectively connected with the two gas channels, and the two gas guide cavities are isolated by a sealing partition.

6. The multi-layer gas-electric combined slip ring according to claim 5, characterized in that: Sealing partitions are provided between the gas slip ring housing and the first electric slip ring housing, and between the gas slip ring housing and the sealing pressure plate; The sealing partition is made of polytetrafluoroethylene.

7. The multi-layer gas-electric combined slip ring according to claim 5, characterized in that: O-type sealing rings are arranged between the gas slip ring housing and the first electric slip ring housing, between the gas slip ring housing and the sealing pressure plate, and between the two gas slip ring housings.

8. The multi-layer gas-electric combined slip ring according to claim 5, characterized in that: Also includes: a second electric slip ring shaft and a second electric slip ring housing; The second electric slip ring shaft is fixedly sleeved on the main shaft, and a plurality of collector rings are sleeved on the second electric slip ring shaft; The second electric slip ring housing is sleeved on the outer side of the second electric slip ring shaft and connected to the first electric slip ring housing; A plurality of contact brush heads are provided on the second electric slip ring housing and are respectively in contact with collector rings on the second electric slip ring shaft.

9. The multi-layer gas-electric combined slip ring according to claim 4, characterized in that: The gas passages are provided with four; The gas slip ring housing is provided with four; The four gas sliding ring housings are sleeved up and down on the outside of the main shaft, the gas guide cavities of the four gas sliding ring housings are respectively connected with the four gas channels, and two adjacent gas guide cavities are isolated by a sealing partition.

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