Contact of vacuum arc-extinguishing chamber

Abstract

The utility model discloses a contact of a vacuum arc-extinguishing chamber, which belongs to the technical field of power transmission and transformation, and comprises cams, a plurality of cams are arranged in a ring sleeve, the cams surround the contact, the contact is arranged in the ring sleeve, the contact and the ring sleeve are coaxial, sliding sleeves are arranged on the cams in a sliding manner, a plurality of sliding sleeves are abutted against the outer wall of the contact, and the sliding sleeves are arranged on the outer wall of the contact. An anti-skid rubber pad is arranged on the face, making contact with the contact, of the sliding sleeve, and the bottom of the ring sleeve is in threaded connection with a bottom plate. The adjusting assembly is used for adjusting the relative height of the sliding sleeve on the cam; the positioning assembly is used for limiting the contact; according to the utility model, impurities can be effectively prevented from influencing the discharge stability of the contact.

Description

TECHNICAL FIELD

[0001] The utility model belongs to power transmission and transformation technical field especially relates to a contact of vacuum arc extinguishing chamber. BACKGROUND

[0002] The vacuum arc extinguishing chamber contact is an important component of the vacuum arc extinguishing chamber, and its main function is to transmit current during the opening and closing of the circuit. The vacuum arc extinguishing chamber, also known as vacuum switch tube, is a core component of medium and high voltage power switch, and through the excellent insulation of the vacuum in the tube, it ensures that the medium and high voltage circuit can quickly extinguish arc and effectively suppress current after power failure, thereby preventing accidents and unexpected events. Since the vacuum arc extinguishing chamber also has a conductive effect, it should be avoided to have impurities such as grease layer on it. However, during assembly, workers often directly contact the contact with their hands, which causes the contact to adhere to impurities such as grease or dander, affecting its discharge stability. Therefore, the present application provides a contact that avoids adhering to impurities such as grease during assembly. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model provides a contact of vacuum arc extinguishing chamber, which solves the above problems.

[0004] To achieve the above purpose, the utility model realizes the following technical scheme: a contact of vacuum arc extinguishing chamber, comprising a cam, a plurality of cams are arranged in a ring, and the cam is arranged around the contact, the contact is in the ring, and the contact is coaxial with the ring, a sliding sleeve is arranged on the cam, a plurality of sliding sleeves abut against the outer wall of the contact, and an anti-skid rubber pad is arranged on the surface of the sliding sleeve in contact with the contact, and the bottom of the ring is screw-connected with a bottom plate; further comprising an adjusting assembly for adjusting the relative height of the sliding sleeve on the cam; and a positioning assembly for limiting the contact.

[0005] Advantages

[0006] The utility model provides a contact of vacuum arc extinguishing chamber, and compared with the prior art, has the following advantages:

[0007] When the contact needs to be taken, the user should hold the side wall of the ring sleeve and start the motor, at this time the screw rod fixedly connected to the output shaft thereof starts to rotate uniformly and drives the supporting plate threadedly connected thereto to start to slide downward, that is, the distance between the supporting plate and the top plate starts to gradually increase, so at this time the contact can start to slide slowly under the action of the supporting plate because the sliding sleeve is fixedly arranged on the supporting plate and at this time the plurality of supporting plates are abutted against the contact, in this process, the user can rotate and take off the bottom plate from the bottom of the ring sleeve, and place the ring sleeve above the workpiece to be connected, if the workpiece to be connected is a plane, the ring sleeve can be directly attached to the surface thereof, in this process, because it is relatively closed, the contact can be effectively prevented from contacting impurities such as oil in the outside world, then the user can rotate the screw, so that the screw slides upward until the bottom tip thereof is separated from the ring sleeve, at this time the screw stops rotating the sleeve, that is, at this time the sleeve can rotate freely on the ring sleeve, then the user can manually rotate the sleeve, so that the gear ring fixedly arranged on the inner wall thereof starts to rotate uniformly, at the same time, because the plurality of gears are meshingly connected to the gear ring, at this time the plurality of gears start to rotate synchronously and can drive the shaft fixedly connected to the shaft center thereof to rotate synchronously, so that the disc fixedly connected to the bottom thereof rotates synchronously, so that the cam fixedly connected to the disc gradually separates from the contact in the process of rotation of the disc, when the sliding sleeve is disconnected from the contact, at this time the plurality of sliding sleeves stop laterally limiting the contact, at the same time, because the supporting plate has a certain size, the supporting plate is always below the contact before the disc rotates °, because the supporting plate is made of a material with a smooth surface, the damping on the supporting plate can be effectively reduced, so that the lateral movement of the contact is avoided, when the disc rotates °, the contact can directly fall on the workpiece to be connected, in this process, the user does not need to touch the contact, so that the oil, dandruff and the like on the hands of the user are prevented from adhering to the contact, forming an insulating layer on the contact, increasing the resistance of the contact and affecting the discharge stability of the contact. BRIEF DESCRIPTION OF DRAWINGS

[0008] Fig. 1 It is a three-dimensional structure schematic diagram of the utility model.

[0009] Fig. 2 It is a whole structure section schematic diagram of the utility model.

[0010] Fig. 3 It is an enlarged schematic diagram of the A area structure of the utility model.

[0011] Fig. 4 It is a whole structure section schematic diagram of the utility model.

[0012] Mark annotation: contact 101, ring sleeve 201, cam 202, sliding sleeve 203, frame 204, screw rod 205, motor 206, supporting plate 207, top plate 208, disc 209, shaft 301, gear 302, gear ring 303, sleeve 304, screw 305, bottom plate 306. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0014] The specific implementation of the utility model will be described in detail in combination with specific examples.

[0015] Please refer to Figs. 1-4 For an embodiment of the utility model, a contact of a vacuum arc-extinguishing chamber comprises a cam 202, a plurality of the cams 202 are arranged in a ring sleeve 201, and the cam 202 surrounds the contact 101, the contact 101 is in the ring sleeve 201, and the contact 101 is coaxial with the ring sleeve 201, a sliding sleeve 203 is slidingly arranged on the cam 202, a plurality of the sliding sleeves 203 abut against the outer wall of the contact 101, and an anti-skid rubber pad is arranged on the surface of the sliding sleeve 203 in contact with the contact 101, and a bottom plate 306 is threadedly connected to the bottom of the ring sleeve 201.

[0016] Further comprising an adjusting assembly for adjusting the relative height of the sliding sleeve 203 on the cam 202, and a positioning assembly for limiting the contact 101.

[0017] For the above example, those skilled in the art should know that the specific bottom plate 306 is not limited to the specific bottom plate 306 described in the above embodiment when implementing the above technical scheme, for example, a sealing rubber ring is arranged at the connection between the bottom plate 306 and the ring sleeve 201, and the purpose of this arrangement is to facilitate the increase of the tightness of the connection.

[0018] Specifically, the adjusting assembly comprises a supporting plate 207 and a top plate 208, the top plate 208 is fixedly connected to the top of the cam 202, the supporting plate 207 is slidingly arranged at the bottom of the cam 202, the supporting plate 207 is below the sliding sleeve 203, and the sliding sleeve 203 is fixedly connected to the supporting plate 207.

[0019] Further comprising a driving assembly for adjusting the distance between the supporting plate 207 and the top plate 208.

[0020] For the above example, those skilled in the art should know that the specific top plate 208 is not limited to the specific top plate 208 described in the above embodiment when implementing the above technical scheme, for example, an anti-skid rubber pad is arranged on the bottom layer of the top plate 208, and the purpose of this arrangement is to facilitate the increase of the positioning effect on the contact 101.

[0021] Specifically, the driving assembly comprises a lead screw 205 and a frame 204, the frame 204 is fixedly connected to a supporting plate 207, the frame 204 is in sliding connection with the cam 202, the frame 204 is in threaded connection with the lead screw 205, and one end of the lead screw 205 is in rotational connection with the cam 202.

[0022] For the above example, those skilled in the art shall know that the lead screw 205 is not limited to the specific lead screw 205 described in the above embodiment when implementing the technical solution, for example, the lead screw 205 shall be selected to have a self-locking effect, and the purpose of such arrangement is to facilitate the increase of the limiting effect on the frame 204.

[0023] Specifically, the other end of the lead screw 205 is fixedly connected with an output shaft of a motor 206, and the motor 206 is fixedly connected with the cam 202.

[0024] Specifically, the positioning assembly comprises a disc 209 and a shaft 301, the cam 202 is fixedly connected to an eccentric position of the disc 209, the shaft 301 is fixedly connected to an axis position of the disc 209, the shaft 301 is in rotational connection with the ring sleeve 201, and one end of the shaft 301 penetrates through the ring sleeve 201.

[0025] Further comprising a transmission assembly for synchronously rotating the plurality of shafts 301.

[0026] For the above example, those skilled in the art shall know that the shaft 301 is not limited to the specific shaft 301 described in the above embodiment when implementing the technical solution, for example, the shaft 301 shall be selected to have a material with high hardness, and the purpose of such arrangement is to facilitate the increase of the anti-deformation effect, thereby avoiding the stress fracture.

[0027] Specifically, the transmission assembly comprises a gear 302 and a gear ring 303, the shaft 301 is fixedly connected to an axis position of the gear 302, and a plurality of the gears 302 are in meshing connection on the gear ring 303, and the plurality of gears 302 are on the same circumferential line.

[0028] Specifically, the gear ring 303 is fixedly connected to a sleeve 304, the sleeve 304 is rotationally arranged on the top of the ring sleeve 201, a screw 305 is in threaded connection with an eccentric position of the sleeve 304, and a tip of the screw 305 abuts against the ring sleeve 201.

[0029] For the above example, those skilled in the art should know that in the implementation of the above technical solutions, it is not limited to the specific screw 305 described in the above embodiment. For example, a groove is provided on the sleeve 201 corresponding to the screw 305, and a plurality of grooves are arranged around the shaft of the sleeve 201. The purpose of such arrangement is to facilitate the increase of the limiting effect of the sleeve 304 through such arrangement.

[0030] In the embodiment of the utility model, when the contact needs to be taken, the user should hold the side wall of the sleeve 201 and start the motor 206. At this time, the lead screw 205 fixedly connected to the output shaft starts to rotate at a constant speed, and drives the supporting plate 207 threadedly connected thereto to start to slide downward. At this time, the distance between the supporting plate 207 and the top plate 208 starts to gradually increase. At this time, the sliding sleeve 203 is fixedly arranged on the supporting plate 207, and at this time, a plurality of supporting plates 207 are tightly arranged on the contact 101. Therefore, at this time, the contact 101 can start to slowly slide downward under the action of the supporting plate 207. In this process, the user can rotate and remove the bottom plate 306 from the bottom of the sleeve 201, and place the sleeve 201 above the workpiece to be connected. If the workpiece to be connected is a plane, the sleeve 201 can be directly attached to the surface thereof. In this process, since the sleeve 201 is relatively closed, the contact can be effectively prevented from contacting impurities such as oil in the external environment. Then the user can rotate the screw 305 to make the screw 305 slide upward until the bottom tip of the screw 305 is separated from the sleeve 201. At this time, the screw 305 stops rotating the sleeve 304, and at this time, the sleeve 304 can rotate freely on the sleeve 201. Then the user can manually rotate the sleeve 304, so that the gear ring 303 fixedly arranged on the inner wall of the sleeve 304 starts to rotate at a constant speed. At this time, since a plurality of gears 302 are meshingly connected to the gear ring 303, the plurality of gears 302 start to rotate synchronously, and can drive the shaft 301 fixedly connected to the shaft to rotate at a constant speed, so that the disc 209 fixedly connected to the bottom of the shaft starts to rotate synchronously. In the process of rotation of the disc 209, the cam 202 fixedly connected to the disc 209 gradually separates from the contact 101. When the sliding sleeve 203 is disconnected from the contact 101, the plurality of sliding sleeves 203 stop limiting the contact 101 in the transverse direction. Since the supporting plate 207 has a certain size, the supporting plate 207 is always below the contact 101 before the disc 209 rotates 90°. Since the supporting plate 207 is made of a smooth material, the damping on the supporting plate 207 can be effectively reduced, so that the transverse movement of the contact 101 is avoided. After the disc 209 rotates 90°, the contact 101 can directly fall on the connected workpiece. In this process, the user does not need to touch the contact 101, so that the grease, dander and other impurities on the user's hands do not adhere to the contact 101, forming an insulating layer on the contact 101, increasing the resistance of the contact 101, and affecting the discharge stability of the contact 101.

[0031] It is to be noted that the relative terms such as first and second and the like are used herein solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0032] The fixed connection in the present application refers to the connection of parts or components after being fixed without any relative movement. It is divided into two kinds of detachable connection and non-detachable connection.

[0033] (1) Detachable connection: the parts are fixed together by using screw, spline, wedge pin, etc. This connection mode can be disassembled during maintenance and will not damage the parts. However, the specifications of the connecting parts used must be correct (such as the length of the bolt, key, wedge pin), and the fastening should be appropriate.

[0034] (2) Non-detachable connection: mainly refers to welding, riveting and over mortise fitting, etc. Since it needs to be forged, sawed or oxygen cut to disassemble during maintenance or replacement, the parts generally cannot be used twice. At the same time, attention should be paid to the process quality, technical detection and remedial measures (such as correction, polishing, etc.) during connection.

[0035] The sliding connection in the present application refers to the sliding of the parts along a linear track, and the hinge in the present application refers to the rotation of the parts along the axial constraint.

[0036] In some cases, the sliding connection and hinge in the present application can also have damping, so that the parts have the ability to maintain in the desired position.

[0037] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A contact of a vacuum interrupter, characterized in that, The cam (202) is arranged in the ring (201), and the cam (202) surrounds the contact (101) which is coaxial with the ring (201); the sleeve (203) is arranged on the cam (202) and abuts against the outer wall of the contact (101); the anti-skid rubber pad is arranged on the surface of the sleeve (203) which contacts the contact (101); Further comprising an adjusting assembly for adjusting the relative height of the sleeve (203) on the cam (202), and a positioning assembly for limiting the contact (101).

2. The contact of a vacuum interrupter according to claim 1, characterized in that The adjusting assembly comprises the top plate (208) and the supporting plate (207), the top plate (208) is fixedly connected to the top of the cam (202), and the supporting plate (207) is slidably arranged at the bottom of the cam (202); the supporting plate (207) is below the sleeve (203), and the sleeve (203) is fixedly connected to the supporting plate (207). Further comprising a driving assembly for adjusting the distance between the supporting plate (207) and the top plate (208).

3. The contact of a vacuum interrupter according to claim 2, characterized in that The driving assembly comprises the frame (204) and the lead screw (205), the frame (204) is fixedly connected to the supporting plate (207) and slidably connected to the cam (202), the frame (204) is threadedly connected to the lead screw (205), and one end of the lead screw (205) is rotatably connected to the cam (202).

4. The contact of a vacuum interrupter according to claim 3, characterized in that The other end of the lead screw (205) is fixedly connected to the output shaft of the motor (206), and the motor (206) is fixedly connected to the cam (202).

5. The contact of a vacuum interrupter according to claim 1, characterized in that The positioning assembly comprises the shaft (301) and the disc (209), the cam (202) is fixedly connected to the eccentric position of the disc (209), and the shaft (301) is fixedly connected to the center of the disc (209); the shaft (301) is rotatably connected to the ring (201), and one end of the shaft (301) penetrates out of the ring (201). Further comprising a transmission assembly for synchronously rotating the shafts (301).

6. The contact of a vacuum interrupter according to claim 5, characterized in that The transmission assembly comprises the gear ring (303) and the gears (302), the shaft (301) is fixedly connected to the center of the gear (302), and the gears (302) are meshingly connected to the gear ring (303); the gears (302) are arranged on the same circumferential line.

7. The contact of a vacuum interrupter according to claim 6, characterized in that The gear ring (303) is fixedly connected to the sleeve (304), and the sleeve (304) is rotatably arranged on the top of the ring (201).

8. The contact of a vacuum interrupter according to claim 7, characterized in that The screw (305) is threadedly connected to the eccentric position of the sleeve (304), and the tip of the screw (305) abuts against the ring (201).

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