Transmission device for three-phase connection of switchgear and switchgear

Abstract

The utility model provides a three-phase connection transmission device for switch equipment and the switch equipment. The switching device comprises three movable members (10) for implementing a three-phase connection, each movable member (10) comprising a contact end (101) and a mounting end (102) opposite the contact end (101), the transmission comprising: three gears respectively arranged on the mounting ends (102) of the three movable members (10); the rack mechanism is configured to be capable of performing translational motion and is provided with three rack parts, and the three rack parts are correspondingly meshed with the three gears respectively to drive the three gears to perform rotational motion, so that the three movable components (10) can be in a closed position or an open position to realize connection or disconnection of the switch equipment; and the driving mechanism (40) is configured to be in transmission connection with the rack mechanism so as to drive the rack mechanism to do translational motion. According to the transmission device, the movable component can rotate at a large angle, and meanwhile it is guaranteed that the transmission efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of electrical switches, in particular to a transmission device for three-phase connection of switch equipment and a switch equipment. Background Art

[0002] Currently, three-phase transmission devices used in switchgear often use connecting rods to drive the rotation of three movable components. This means that the rotation angle of these movable components cannot exceed 90 degrees, otherwise the pressure angle is large and the transmission efficiency is low. If the switchgear requires a larger rotation angle, such as exceeding 180 degrees, this connecting rod transmission cannot be implemented. Utility Model Content

[0003] In view of this, the present invention aims to provide a transmission device for three-phase connection of a switch device, which can realize a large-angle rotation of the movable component of the switch device, especially a rotation angle of the movable component greater than 90 degrees, while ensuring high transmission efficiency of the transmission device.

[0004] According to one aspect of the present invention, a transmission device for three-phase connection of a switching device is provided, wherein the switching device includes three movable components for realizing three-phase connection, each movable component including a contact end and a mounting end opposite to the contact end, and in particular, the transmission device includes: three gears, respectively arranged on the mounting ends of the three movable components; a rack mechanism, wherein the rack mechanism is configured to be able to move translationally and has three rack portions, and the three rack portions are respectively engaged with the three gears to drive the three gears to perform rotational movement, so that the three movable components can be in a closed position or an open position to realize the connection or disconnection of the switching device; and a driving mechanism, configured to be in transmission connection with the rack mechanism to drive the rack mechanism to perform translational movement.

[0005] In this way, the transmission device for three-phase connection of a switchgear of the present invention realizes large-angle rotation of the movable component while having high transmission efficiency.

[0006] In an exemplary embodiment, the central axes of the three gears are located in the same plane and are parallel to each other, and the three gears include an intermediate gear and a first gear and a second gear respectively located on both sides of the intermediate gear; wherein, the three rack portions include an intermediate rack portion and a first rack portion and a second rack portion respectively located on both sides of the intermediate rack portion, the intermediate rack portion is meshed with the intermediate gear, the first rack portion is meshed with the first gear, and the second rack portion is meshed with the second gear; wherein, the intermediate rack portion and the first rack portion are rigidly connected together by a first connecting plate, and the intermediate rack portion and the second rack portion are rigidly connected together by a second connecting plate.

[0007] In this way, the transmission device for three-phase connection of a switchgear of the present invention is rationally designed and compact in structure, without adding too many additional transmission links.

[0008] In an exemplary embodiment, the driving mechanism is connected to the intermediate rack portion to transmit power to the intermediate rack portion so that the intermediate rack portion can move translationally, thereby driving the first rack portion to move translationally through the first connecting plate and driving the second rack portion to move translationally through the second connecting plate.

[0009] In this way, the transmission device for the three-phase connection of the switching device of the utility model is reasonably designed. By simply transmitting power to the intermediate rack part, the first rack part and the second rack part can be driven to translate at the same time without adding too many additional transmission links.

[0010] In an exemplary embodiment, the transmission device further includes a box, and the three gears, the rack mechanism, and the driving mechanism are all accommodated in the box.

[0011] In this way, the transmission device for three-phase connection of switchgear of the present invention utilizes a single box to accommodate the three gears, the rack mechanism, the drive mechanism and other major components, and has a compact structure and is less prone to failure.

[0012] In an exemplary embodiment, the transmission device includes a first guide rod for supporting and guiding the first rack portion and a second guide rod for supporting and guiding the second rack portion, the first guide rod and the second guide rod are fixedly arranged relative to the box, wherein the first rack portion is sleeved on the outer periphery of the first guide rod to be suitable for sliding on the first guide rod, and the second rack portion is sleeved on the outer periphery of the second guide rod to be suitable for sliding on the second guide rod.

[0013] In this way, the transmission device for three-phase connection of a switchgear of the present invention realizes stable and efficient transmission by utilizing the first guide rod and the second guide rod.

[0014] In an exemplary embodiment, the transmission device includes a first support member for supporting the first guide rod and a second support member for supporting the second guide rod, the first support member and the second support member are both fixed to the box, the first support member and the second support member each include a main body plate mounted on the side wall of the box and two opposite side plates extending from the main body plate, wherein the first gear is mounted to the main body plate of the first support member and the second gear is mounted to the main body plate of the second support member; and wherein both ends of the first guide rod are respectively fixed to the two side plates of the first support member, and both ends of the second guide rod are respectively fixed to the two side plates of the second support member.

[0015] In this way, the transmission device for three-phase connection of a switchgear according to the present invention achieves a stable structure by using the first support member and the second support member.

[0016] In an exemplary embodiment, pillars are arranged on the main body plate of the first support member and the main body plate of the second support member, and guide grooves are formed on the surfaces of the first rack portion facing the pillars and the surfaces of the second rack portion facing the pillars, and the guide grooves are suitable for contacting and cooperating with the pillars to avoid rotational movement of the first rack portion and the second rack portion during translational movement.

[0017] In this way, the transmission device for three-phase connection of a switchgear of the present invention realizes stable and efficient transmission by utilizing the guide grooves and the pillars.

[0018] In an exemplary embodiment, the transmission device includes a third support member for supporting the intermediate gear, the third support member is fixed to the box, and the third support member includes a main body plate, wherein the mounting end of the movable member connected to the first gear is mounted to the main body plate of the first support member; wherein the mounting end of the movable member connected to the second gear is mounted to the main body plate of the second support member; and wherein the mounting end of the movable member connected to the intermediate gear is mounted to the main body plate of the third support member.

[0019] In this way, the transmission device for three-phase connection of a switchgear according to the present invention achieves a stable structure by utilizing the third support member and the first support member and the second support member.

[0020] In an exemplary embodiment, the driving mechanism includes a motor and a motion conversion mechanism connected between the motor and the rack mechanism to convert rotational motion from the motor into translational motion of the rack mechanism.

[0021] In this way, the transmission device for three-phase connection of a switchgear of the present invention is reasonably designed without adding too many additional transmission links.

[0022] According to another aspect of the present invention, a switchgear is provided, comprising three movable components for achieving three-phase connection. In particular, the switchgear further comprises any one of the above-mentioned transmission devices for three-phase connection of the switchgear.

[0023] In summary, the transmission device for three-phase connection of a switchgear and the switchgear including the transmission device of the present invention can achieve at least the following beneficial technical effects.

[0024] First, the transmission device for three-phase connection of a switchgear of the present invention realizes large-angle rotation of the movable component and has high transmission efficiency.

[0025] Secondly, the transmission device for three-phase connection of switchgear of the present invention utilizes a single box to accommodate three gears, a rack mechanism, a drive mechanism and other main components, and has a compact structure and is not prone to failure.

[0026] Third, the transmission device for three-phase connection of the switchgear of the present invention realizes stable and efficient transmission by utilizing the first guide rod and the second guide rod, the guide groove and the support.

[0027] Fourthly, the transmission device for three-phase connection of the switchgear of the present invention is reasonably designed and does not require the addition of too many additional transmission links. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that those skilled in the art will have a clearer understanding of the above and other features and advantages of the present invention. In the accompanying drawings:

[0029] Figure 1 1 is a schematic front view of a transmission device for a three-phase connection of a switchgear according to an exemplary embodiment of the present invention, wherein some parts are deleted for the purpose of clarity.

[0030] Figure 2 1 is a schematic top view of a transmission device for a three-phase connection of a switchgear according to an exemplary embodiment of the present invention.

[0031] Figure 3 A transmission device for three-phase connection of a switchgear according to an exemplary embodiment of the present invention is provided along Figure 1 A schematic cross-sectional view taken along line AA in FIG.

[0032] Figure 4 2 is a schematic right side view of a transmission device for a three-phase connection of a switchgear according to an exemplary embodiment of the present invention.

[0033] Figure 5 1 is a schematic left side view of a transmission device for a three-phase connection of a switchgear according to an exemplary embodiment of the present invention.

[0034] Figure 6 FIG1 is a schematic perspective view of a transmission device for a three-phase connection of a switchgear according to an exemplary embodiment of the present invention, wherein some parts are deleted for the purpose of clarity.

[0035] Figure 7 1 is another schematic perspective view of a transmission device for a three-phase connection of a switchgear according to an exemplary embodiment of the present invention, wherein some parts are deleted for the purpose of clarity.

[0036] The accompanying drawings are numerals as follows:

[0037] 10. Movable components

[0038] 101. Contact end

[0039] 102. Installation end

[0040] 201, First Gear

[0041] 202, Second Gear

[0042] 203, intermediate gear

[0043] 301. First rack

[0044] 302. Second rack

[0045] 303, middle rack

[0046] 304, the first consecutive board

[0047] 305, the second consecutive board

[0048] 306. Guide groove

[0049] 311. First fastening device

[0050] 312. Second fastening device

[0051] 313. Third fastening device

[0052] 314. Fourth fastening device

[0053] 40. Driving mechanism

[0054] 401. Motor

[0055] 402. Motion Conversion Mechanism

[0056] 50. Box

[0057] 51. Threaded components

[0058] 601, first guide rod

[0059] 602, second guide rod

[0060] 611. First support member

[0061] 612. Second support member

[0062] 613. Third support member

[0063] 614, Main Plate

[0064] 615, side panels

[0065] 616, Pillar DETAILED DESCRIPTION

[0066] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is further described in detail with reference to the following embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, rather than all of them. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The nouns and pronouns related to people in this patent application are not limited to specific genders.

[0067] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form.

[0068] First, please refer to Figure 1 and Figure 3 ,in, Figure 1 is a schematic front view of a transmission device for a three-phase connection of a switchgear according to an exemplary embodiment of the present utility model, Figure 3 It is along Figure 1 Schematic cross-sectional view taken along line AA in FIG. Figure 3As shown in FIG, the switchgear includes three movable members 10 for achieving three-phase connection. Each movable member 10 includes a contact end 101 and a mounting end 102 opposite the contact end 101. It will be understood that the three contact ends 101 are in contact with or disconnected from three corresponding contacts of the switchgear to achieve the on / off state of the switchgear. The corresponding three contacts are not directly related to the subject matter claimed in the present invention and are therefore not shown in the drawings.

[0069] Reference Figure 1 The transmission device mainly includes three gears, a rack mechanism and a driving mechanism. Specifically, the three gears are respectively arranged on the mounting ends 102 of the three movable components 10. The rack mechanism is configured to be able to move in translation and has three rack parts, and the three rack parts are respectively engaged with the three gears to drive the three gears to rotate, so as to drive the movable component 10 to rotate, and then it can be in a closed position or an open position to realize the on or off state of the switching device. The driving mechanism 40 is configured to be connected to the rack mechanism in a transmission manner to drive the rack mechanism to move in translation. It can be understood that the three rack parts can be regarded as sliders with racks, and the rack is formed on one surface of the slider.

[0070] Please also refer to Figure 3 and Figure 6 The central axes of the three gears are located in the same plane and are parallel to each other. The three gears include an intermediate gear 203 and a first gear 201 and a second gear 202 located on both sides of the intermediate gear 203. The three gears have the same structure and the end faces of the three gears are also aligned. The three rack parts include an intermediate rack part 303 and a first rack part 301 and a second rack part 302 located on both sides of the intermediate rack part 303. The intermediate rack part 303 is meshed with the intermediate gear 203, the first rack part 301 is meshed with the first gear 201, and the second rack part 302 is meshed with the second gear 202. The intermediate rack part 303 and the first rack part 301 are rigidly connected together by a first connecting plate 304, and the intermediate rack part 303 and the second rack part 302 are rigidly connected together by a second connecting plate 305.

[0071] Please also refer to Figure 3 and Figure 6, the driving mechanism 40 is connected to the intermediate rack portion 303 to transmit power to the intermediate rack portion 303 so that the intermediate rack portion 303 can move in translation, and then drive the first rack portion 301 to move in translation through the first connecting plate 304 and drive the second rack portion 302 to move in translation through the second connecting plate 305. By using the first rack portion 301, the second rack portion 302 and the intermediate rack portion 303 to drive the three gears to move, it is possible to achieve a large angle rotation of the three movable components 10, such as a rotation angle exceeding 180 degrees, which cannot be achieved in the linkage mechanism of the prior art. The mounting ends 102 of the three movable components 10 and the three gears can be constructed as a whole, or they can be constructed separately and then assembled together. It can be understood that the angle mentioned in this application refers to the rotation angle of the rotating shaft of the movable component 10.

[0072] Reference Figure 1 and Figure 2 It can be seen that the transmission device further includes a box 50 , in which the three gears, the rack mechanism and the drive mechanism 40 are all accommodated.

[0073] Reference Figure 3 The transmission device includes a first guide rod 601 for supporting and guiding the first rack portion 301 and a second guide rod 602 for supporting and guiding the second rack portion 302. The first guide rod 601 and the second guide rod 602 are fixedly arranged relative to the box 50. The first rack portion 301 is sleeved around the outer periphery of the first guide rod 601 so as to be suitable for sliding on the first guide rod 601, and the second rack portion 302 is sleeved around the outer periphery of the second guide rod 602 so as to be suitable for sliding on the second guide rod 602. Therefore, a single first guide rod 601 can be used to support and guide the first rack portion 301, and a single second guide rod 602 can be used to support and guide the second rack portion 302.

[0074] Please also refer to Figure 3 and Figure 6 The transmission device includes a first support member 611 for supporting the first guide rod 601 and a second support member 612 for supporting the second guide rod 602. The first support member 611 and the second support member 612 are both fixed to the box 50. The first support member 611 and the second support member 612 each include a main plate 614 mounted on the side wall of the box 50 and two opposite side plates 615 extending from the main plate 614. The first support member 611 and the second support member 612 can both be formed of bent plates.

[0075] Reference Figure 6, the first gear 201 is installed to the main plate of the first support member 611 and the second gear 202 is installed to the main plate of the second support member 612; and wherein, the two ends of the first guide rod 601 are respectively fixed to the two side plates of the first support member 611, and the two ends of the second guide rod 602 are respectively fixed to the two side plates of the second support member 612.

[0076] Reference Figure 3 , the main body plate 614 of the first support member 611 and the main body plate 614 of the second support member 612 are both provided with a support 616, and the surface of the first rack portion 301 facing the support 616 and the surface of the second rack portion 302 facing the support 616 are both formed with a guide groove 306 ( Figure 7 ), the guide groove 306 is adapted to contact and cooperate with the support 616 to prevent the first rack portion 301 and the second rack portion 302 from rotating during translational movement, specifically, to prevent the first rack portion 301 from rotating around the first guide rod 601 and the second rack portion 302 from rotating around the second guide rod 602, that is, to prevent rollover. Figure 7 As can be seen in FIG, the pillar 616 may be cylindrical in shape and the cross-section of the guide groove 306 may be rectangular.

[0077] Please also refer to Figure 3 and Figure 6 The transmission device includes a third support member 613 for supporting the intermediate gear 203. The third support member 613 is fixed to the box 50 and includes a main body plate. Figure 6 , the mounting end 102 of the movable member 10 connected to the first gear 201 is mounted on the main body plate of the first support member 611; the mounting end 102 of the movable member 10 connected to the second gear 202 is mounted on the main body plate of the second support member 612; and the mounting end 102 of the movable member 10 connected to the intermediate gear 203 is mounted on the main body plate of the third support member 613.

[0078] Reference Figure 6 The drive mechanism 40 includes a motor 401 and a motion conversion mechanism 402. The motion conversion mechanism 402 is connected between the motor 401 and the rack mechanism to convert the rotational motion of the motor 401 into the translational motion of the rack mechanism. The motion conversion mechanism 402 can be any suitable mechanism capable of converting the rotational motion of the motor into the translational motion of the rack mechanism. For example, it can be a mechanism including a reduction gear and a cam, wherein the reduction gear is connected to the motor, the cam is connected to the reduction gear, and the cam is configured to drive the rack mechanism to perform translational motion.

[0079] Reference Figure 6The first connecting plate 304 is rigidly connected to the first rack portion 301 at one end using a first fastening device 311, and the second connecting plate 305 is rigidly connected to the second rack portion 302 at one end using a second fastening device 312. Furthermore, the first connecting plate 304 is rigidly connected to the middle rack portion 303 at the other end using a third fastening device 313, and the second connecting plate 305 is rigidly connected to the middle rack portion 303 at the other end using a fourth fastening device 314. It will be appreciated that the first fastening device 311, the second fastening device 312, the third fastening device 313, and the fourth fastening device 314 may be any suitable fastening device, such as a bolt and nut, a rivet, a clamp mechanism, or a snap-fit ​​structure.

[0080] The present invention further provides a switchgear, which includes three movable components 10 for achieving three-phase connection. In particular, the switchgear further includes any one of the above-mentioned transmission devices for three-phase connection of the switchgear.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A transmission device for three-phase connection of a switchgear, the switchgear comprising three movable members (10) for achieving three-phase connection, each movable member (10) comprising a contact end (101) and a mounting end (102) opposite to the contact end (101), characterized in that: The transmission device comprises: three gears, respectively arranged on the mounting ends (102) of the three movable members (10); a rack mechanism, the rack mechanism being configured to be capable of translational movement and having three rack portions, the three rack portions respectively meshing with the three gears to drive the three gears to perform rotational movement, so that the three movable members (10) can be in a closed position or an open position, thereby realizing the switching device being switched on or off; and A driving mechanism (40) is configured to be in transmission connection with the rack mechanism to drive the rack mechanism to perform translational motion.

2. The transmission device for three-phase connection of a switchgear according to claim 1, characterized in that: The central axes of the three gears are located in the same plane and are parallel to each other. The three gears include an intermediate gear (203) and a first gear (201) and a second gear (202) respectively located on both sides of the intermediate gear (203); The three rack parts include an intermediate rack part (303) and a first rack part (301) and a second rack part (302) respectively located on both sides of the intermediate rack part (303); the intermediate rack part (303) is meshed with the intermediate gear (203); the first rack part (301) is meshed with the first gear (201); and the second rack part (302) is meshed with the second gear (202); The intermediate rack portion (303) and the first rack portion (301) are rigidly connected together via a first connecting plate (304), and the intermediate rack portion (303) and the second rack portion (302) are rigidly connected together via a second connecting plate (305).

3. The transmission device for three-phase connection of a switchgear according to claim 2, characterized in that: The driving mechanism (40) is connected to the intermediate rack portion (303) to transmit power to the intermediate rack portion (303) so that the intermediate rack portion (303) can move in translation, thereby driving the first rack portion (301) to move in translation through the first connecting plate (304) and driving the second rack portion (302) to move in translation through the second connecting plate (305).

4. The transmission device for three-phase connection of a switchgear according to claim 2 or 3, characterized in that: The transmission device further comprises a box (50), in which the three gears, the rack mechanism and the driving mechanism (40) are all accommodated.

5. The transmission device for three-phase connection of a switchgear according to claim 4, characterized in that: The transmission device includes a first guide rod (601) for supporting and guiding the first rack portion (301) and a second guide rod (602) for supporting and guiding the second rack portion (302), the first guide rod (601) and the second guide rod (602) being fixedly arranged relative to the box (50), wherein the first rack portion (301) is sleeved on the outer periphery of the first guide rod (601) to be suitable for sliding on the first guide rod (601), and the second rack portion (302) is sleeved on the outer periphery of the second guide rod (602) to be suitable for sliding on the second guide rod (602).

6. The transmission device for three-phase connection of a switchgear according to claim 5, characterized in that: The transmission device includes a first support member (611) for supporting the first guide rod (601) and a second support member (612) for supporting the second guide rod (602), the first support member (611) and the second support member (612) are both fixed to the box (50), and the first support member (611) and the second support member (612) each include a main body plate (614) mounted on a side wall of the box and two opposite side plates (615) extending from the main body plate (614). wherein the first gear (201) is mounted to the main body plate of the first support member (611) and the second gear (202) is mounted to the main body plate of the second support member (612); And wherein, the two ends of the first guide rod (601) are respectively fixed to the two side plates of the first support member (611), and the two ends of the second guide rod (602) are respectively fixed to the two side plates of the second support member (612).

7. The transmission device for three-phase connection of a switchgear according to claim 6, characterized in that: Pillars (616) are arranged on the main body plate (614) of the first support member (611) and the main body plate (614) of the second support member (612), and guide grooves (306) are formed on the surface of the first rack portion (301) facing the pillars (616) and the surface of the second rack portion (302) facing the pillars (616), and the guide grooves (306) are suitable for contacting and cooperating with the pillars (616) to prevent the first rack portion (301) and the second rack portion (302) from rotating during translational movement.

8. The transmission device for three-phase connection of a switchgear according to claim 6, characterized in that: The transmission device includes a third support member (613) for supporting the intermediate gear (203), the third support member (613) is fixed to the box (50), and the third support member (613) includes a main body plate, wherein the mounting end (102) of the movable member (10) connected to the first gear (201) is mounted on the main body plate of the first support member (611); wherein the mounting end (102) of the movable member (10) connected to the second gear (202) is mounted on the main body plate of the second support member (612); And wherein, the mounting end (102) of the movable member (10) connected to the intermediate gear (203) is mounted on the main plate of the third support member (613).

9. The transmission device for three-phase connection of a switchgear according to any one of claims 1 to 3, characterized in that: The driving mechanism (40) includes a motor (401) and a motion conversion mechanism (402), wherein the motion conversion mechanism (402) is connected between the motor (401) and the rack mechanism to convert the rotational motion from the motor into the translational motion of the rack mechanism.

10. A switchgear comprising three movable members (10) for achieving a three-phase connection, characterized in that: The switchgear further comprises a transmission device for three-phase connection of the switchgear according to any one of claims 1 to 9.

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