A composite high-voltage combined electrical appliance

Abstract

The present invention relates to a composite high-voltage combined electrical appliance, comprising an L-shaped conductor, wherein the L-shaped conductor has a vertical inner cavity, a horizontal inner cavity, and a movable inner cavity; an isolating moving contact is installed in the vertical inner cavity, wherein a first connecting rod is installed in the isolating moving contact, and the first connecting rod is in an arc shape; a grounding moving contact is installed in the horizontal inner cavity, wherein a second connecting rod is installed in the grounding moving contact, and the second connecting rod is in an arc shape; a driving crank arm is installed in the movable inner cavity, wherein one side of the driving crank arm is hinged to the L-shaped conductor, and the other side of the driving crank arm is hinged to the first connecting rod and the second connecting rod respectively. The advantages of the present invention are that the arc-shaped first connecting rod and the second connecting rod are used to cooperate with the driving crank arm, so that the movement trajectory of the first connecting rod and the second connecting rod is an arc-shaped trajectory that cooperates with the driving crank arm, thereby avoiding the delay of the entire electrical opening and closing caused by the delay of the movement, and making the operation smoother.

Description

Technical Field

[0001] The invention belongs to the field of high-voltage power switches, and in particular relates to a composite high-voltage combined electrical appliance. Background Art

[0002] At present, the isolating / grounding switches in the composite high-voltage combined electrical appliances are basically conventionalized as separate modules, and there are single isolating switches, single grounding switches, and three-position isolating / grounding switches according to their functions in the line. According to the line function, a fast grounding switch is also required, that is, the fast grounding switch is connected to the conventional three-position isolating / grounding switch interface, which increases the weight and height of the product on the one hand, and also increases the cost of the product on the other hand.

[0003] Therefore, in view of the above phenomenon, in patent CN202736817U, a high-voltage isolating / grounding switch device is provided, including a three-position isolating / grounding switch and a fast grounding switch; the three-position isolating / grounding switch includes an isolating static contact, a first grounding static contact and an isolating / grounding moving contact; the fast grounding switch includes a second grounding static contact and a second grounding moving contact; the three-position isolating / grounding switch is arranged in a housing, and the fast grounding switch is installed on the side wall of the housing; the isolating / grounding moving contact is installed in the first conductor; the second conductor is fixed on the inner wall of the housing through an insulating member, and the isolating static contact and the second grounding static contact are arranged in the second conductor; the first grounding static contact is fixedly installed on the cover plate of the side wall of the housing. The utility model integrates the isolating / grounding switch and the fast grounding switch into one module. Under the condition of satisfying the same line function, the structure is compact, the height is reduced, and the cost is reduced while the product performance is further improved.

[0004] In the above-mentioned high-voltage isolating / earthing switch device, in the three-position isolating / earthing switch, for the transmission between the isolating moving contact and the grounding moving contact, the driving crank arm, the first connecting rod and the second connecting rod cooperate with each other to realize the synchronous movement between the isolating moving contact and the grounding moving contact. In this transmission structure, the driving crank arm swings along the hinge point between the driving crank arm and the L-shaped conductor, and its motion trajectory is an arc shape, while the first connecting rod and the second connecting rod are both linear rods, which move in a linear manner when moving, that is, their motion trajectories are in a linear shape. Therefore, the motion trajectories of the driving crank arm and the first connecting rod and the second connecting rod are inconsistent. Although the first connecting rod and the second connecting rod are connected in a hinged manner with the driving crank arm, it is inevitable. This will cause a certain lag and unsmooth movement when the first connecting rod or the second connecting rod drives the driving crank arm to move, or when the driving crank arm drives the first connecting rod or the second connecting rod to move. This will cause a certain delay in the opening and closing of the disconnector, affecting its smooth operation. In addition, during the operation of the first connecting rod and the second connecting rod, since both adopt a linear rod structure, they are prone to contact and friction with the end of the inner wall of the grounding moving contact, the isolating moving contact, or the inner wall of the L-shaped conductor. The first connecting rod and the second connecting rod are both linear rod structures, and their ends are angular structures. Therefore, they may scratch the inner wall of the grounding moving contact, the isolating moving contact, or the inner wall of the L-shaped conductor, thereby reducing their service life. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a composite high-voltage combined electrical appliance with smooth operation and avoiding scratching of products.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: a composite high-voltage combination electrical appliance, the innovation of which is: comprising

[0007] An L-shaped conductor, wherein the L-shaped conductor has a pair of vertical inner cavities and a horizontal inner cavity which are vertically distributed to each other, and the vertical inner cavity and the horizontal inner cavity are connected through a movable inner cavity;

[0008] An isolating moving contact is installed in the vertical inner cavity, and a cavity is provided in the isolating moving contact. A vertically arranged first connecting rod is installed in the cavity of the isolating moving contact, one side of the first connecting rod is hinged with the isolating moving contact, and the other side extends out of the isolating moving contact and extends into the movable inner cavity, and the first connecting rod is in an arc shape;

[0009] A grounding movable contact is installed in the horizontal inner cavity, and a cavity is provided in the grounding movable contact. A horizontally arranged second connecting rod is installed in the cavity of the grounding movable contact, one side of the second connecting rod is hinged with the grounding movable contact, and the other side extends out of the grounding movable contact and extends into the movable inner cavity, and the second connecting rod is in an arc shape;

[0010] A driving crank arm is installed in the movable inner cavity, one side of the driving crank arm is hinged to the L-shaped conductor, and the other side of the driving crank arm has a first ear plate extending in the direction of the isolating moving contact and a second ear plate extending in the direction of the grounding moving contact. The first ear plate has a first groove for accommodating the end of the first connecting rod to be embedded, and the end of the first connecting rod is embedded in the first groove and then hinged to the first ear plate. The second ear plate has a second groove for accommodating the end of the second connecting rod to be embedded, and the end of the second connecting rod is embedded in the second groove and then hinged to the second ear plate.

[0011] Furthermore, the connection between the first connecting rod and the isolating moving contact is as follows: a horizontally distributed first connecting rod fixing plate is provided in the inner cavity of the isolating moving contact, a first connecting rod mounting seat is provided at the bottom end of the first connecting rod fixing plate, the bottom end of the first connecting rod mounting seat is hingedly connected to the top end of the first connecting rod, a first fixing threaded connection hole is provided at the middle position of the top end of the first connecting rod mounting seat, a first guiding threaded connection hole is provided on both sides of the first fixing threaded connection hole on the first connecting rod mounting seat, a first fixing through hole and a first guiding through hole corresponding to the first fixing threaded connection hole and the first guiding threaded connection hole are provided on the first connecting rod fixing plate, a first fixing bolt is passed through the first fixing through hole on the first connecting rod fixing plate and then threadedly engaged with the first fixing threaded connection hole on the first connecting rod mounting seat, thereby realizing the fixation between the first connecting rod mounting seat and the first connecting rod fixing plate, a pair of first guide screws are passed through the first guiding through hole on the first connecting rod fixing plate and then threadedly engaged with the first guiding threaded connection hole on the first connecting rod mounting seat, thereby realizing the guide limit between the first connecting rod mounting seat and the first connecting rod fixing plate.

[0012] Furthermore, the connection between the second connecting rod and the grounding moving contact is as follows: a vertically distributed second connecting rod fixing plate is provided in the inner cavity of the grounding moving contact, a second connecting rod mounting seat is provided on the side of the second connecting rod fixing plate close to the movable inner cavity, a side end of the second connecting rod mounting seat is hinged to a side of the second connecting rod away from the movable inner cavity, a second fixing threaded connection hole is provided at a middle position of the side of the second connecting rod mounting seat away from the movable inner cavity, a second guiding threaded connection hole is provided on the second connecting rod mounting seat on both sides of the second fixing threaded connection hole, and a second connecting rod fixing plate has a The second fixing threaded connection hole, the second fixing through hole corresponding to the second guide threaded connection hole, and the second guide through hole are threadedly engaged with the second fixing threaded connection hole on the second connecting rod mounting seat after a second fixing bolt passes through the second fixing through hole on the second connecting rod fixing plate, thereby realizing the fixation between the second connecting rod mounting seat and the second connecting rod fixing plate; a pair of second guide screws are threadedly engaged with the second guide threaded connection hole on the second connecting rod mounting seat after passing through the second guide through hole on the second connecting rod fixing plate, thereby realizing the guide limiting between the second connecting rod mounting seat and the second connecting rod fixing plate.

[0013] Furthermore, both sides of the bottom end of the isolating movable contact are provided with first openings for accommodating the horizontal swing of the first connecting rod, and both upper and lower sides of the side of the grounding movable contact close to the movable inner cavity are provided with second openings for accommodating the vertical swing of the second connecting rod.

[0014] Furthermore, a plurality of first elastic tensioning members are arranged between the outer wall of the isolating movable contact and the L-shaped conductor, and a plurality of second elastic tensioning members are arranged between the grounding movable contact and the L-shaped conductor.

[0015] The advantages of the present invention are: in the present invention, an arc-shaped first connecting rod and a second connecting rod are used to cooperate with the driving crank arm, so that the movement trajectories of the first connecting rod and the second connecting rod are arc-shaped trajectories that cooperate with the driving crank arm, so that when the isolating moving contact and the grounding moving contact move, the overall movement is smoother, avoiding the delay in the opening and closing of the entire electrical appliance due to the delay in movement, making the overall operation smoother; and the first connecting rod and the second connecting rod adopt an arc-shaped design, even if they come into contact with the isolating moving contact, the grounding moving contact, and the L-shaped conductor, they will not cause scratches, thereby ensuring their service life.

[0016] The connection between the first connecting rod and the isolating moving contact, and the connection between the second connecting rod and the grounding moving contact both use the cooperation between the connecting rod fixing plate, the connecting rod fixing seat, and the fixing bolts, thereby realizing the detachable connection and fixation between the first connecting rod and the isolating moving contact, and the second connecting rod and the grounding moving contact, and facilitating the fixation of the first connecting rod and the second connecting rod. In addition, the cooperation of the guide bolts is used, so that during installation, the relative position between the first connecting rod and the isolating moving contact, and the relative position between the second connecting rod and the grounding moving contact are guided and limited, thereby ensuring the accuracy of the installation position.

[0017] The first opening on the isolating moving contact and the second opening on the grounding moving contact are provided to cooperate with the movement of the first connecting rod and the second connecting rod to avoid the isolating moving contact or the grounding moving contact from touching when the first connecting rod and the second connecting rod move, thereby ensuring smooth operation.

[0018] The elastic tensioner arranged between the isolating moving contact and the L-shaped conductor, and between the grounding moving contact and the L-shaped conductor, is to ensure the fixation of the relative position between the isolating moving contact and the L-shaped conductor, and between the grounding moving contact and the L-shaped conductor, so as to avoid slight relative movement between the isolating moving contact or the grounding moving contact and the L-shaped conductor when not in operation, thereby affecting the operation of the entire electrical appliance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Figure 1 It is a schematic diagram of the composite high-voltage combined electrical appliance of the present invention.

[0021] Figure 2 It is a side view of the composite high-voltage combined electrical appliance in the present invention.

[0022] Figure 3 for Figure 2 BB cross-sectional view.

[0023] Figure 4 It is a schematic diagram of the interior of the composite high-voltage combined electrical appliance in the present invention. DETAILED DESCRIPTION

[0024] The following embodiments can enable those skilled in the art to more fully understand the present invention, but the present invention is not limited to the scope of the embodiments.

[0025] like Figure 1-Figure 4 A composite high-voltage combined electrical appliance is shown, comprising

[0026] An L-shaped conductor 1 has a pair of vertical inner cavities and horizontal inner cavities that are vertically distributed to each other, and the vertical inner cavity and the horizontal inner cavity are connected through a movable inner cavity 2.

[0027] An isolating moving contact 3 is installed in the vertical inner cavity, and a cavity 31 is provided in the isolating moving contact 3. A vertically arranged first connecting rod 32 is installed in the cavity of the isolating moving contact 3. One side of the first connecting rod 32 is hinged to the isolating moving contact 3, and the other side of the first connecting rod 32 extends out of the isolating moving contact 3 and extends into the movable inner cavity 2. The first connecting rod 32 is in an arc shape.

[0028] The connection between the first connecting rod 32 and the isolating moving contact 3 is as follows: a horizontally distributed first connecting rod fixing plate 33 is provided in the inner cavity of the isolating moving contact 3, a first connecting rod mounting seat 34 is provided at the bottom end of the first connecting rod fixing plate 33, and the bottom end of the first connecting rod mounting seat 34 is hinged to the top end of the first connecting rod 32. The specific connection is as follows: a cavity is provided at the bottom end of the first connecting rod mounting seat 34 for accommodating the top end of the first connecting rod 32 to extend into, a first rotating shaft is installed at the top end of the first connecting rod 32, and at the same time, through holes corresponding to the first rotating shaft are provided on both side walls of the cavity of the first connecting rod mounting seat 34 for accommodating the first rotating shaft to be movably embedded and installed. After the top end of the first connecting rod 32 extends into the cavity at the bottom end of the first connecting rod mounting seat 34, the first rotating shaft of the first connecting rod 32 is respectively embedded in the through holes of the first connecting rod mounting seat 34, thereby realizing the hinged cooperation between the first connecting rod 32 and the first connecting rod mounting seat 34.

[0029] A first fixing threaded connection hole is provided in the middle position of the top end of the first connecting rod mounting seat 34, and a first guiding threaded connection hole is provided on both sides of the first fixing threaded connection hole on the first connecting rod mounting seat 34, and the size of the first fixing threaded connection hole is larger than the size of the first guiding threaded connection hole. A first fixing through hole and a first guiding through hole corresponding to the first fixing threaded connection hole and the first guiding threaded connection hole are provided on the first connecting rod fixing plate 33. A first fixing bolt 35 passes through the first fixing through hole on the first connecting rod fixing plate 33 and then threadably engages with the first fixing threaded connection hole on the first connecting rod mounting seat 34, thereby achieving fixation between the first connecting rod mounting seat 34 and the first connecting rod fixing plate 33. A pair of first guiding screws 36 pass through the first guiding through hole on the first connecting rod fixing plate 33 and then threadably engage with the first guiding threaded connection hole on the first connecting rod mounting seat 34, thereby achieving guide limiting between the first connecting rod mounting seat 34 and the first connecting rod fixing plate 33.

[0030] The connection between the first connecting rod 32 and the isolating moving contact 3 is achieved by the cooperation among the first connecting rod fixing plate 33, the first connecting rod mounting seat 34 and the first fixing bolt 35, thereby realizing a detachable connection and fixation between the first connecting rod 32 and the isolating moving contact 3, and facilitating the fixation of the first connecting rod 32. In addition, the cooperation of the first fixing bolt 35 is adopted, so that during installation, the relative position between the first connecting rod 32 and the isolating moving contact 3 is guided and limited, thereby ensuring the accuracy of the installation position of the first connecting rod 32.

[0031] During installation, first, connect the first connecting rod 32 and the first connecting rod mounting seat 34, and threadably connect and fix the first guide screw 36 to the first guide threaded connection hole on the first connecting rod mounting seat 34, then, extend the first connecting rod mounting seat 34 with the first connecting rod 32 from one side of the isolating moving contact 3 into the cavity of the isolating moving contact 3 until the end of the first connecting rod mounting seat 34 abuts against the end of the first connecting rod fixing plate 33 in the isolating moving contact 3. At this time, ensure that the first guide screw 36 extends into the first guide through hole on the first connecting rod fixing plate 33, then, from the other side of the isolating moving contact 3, pass a first fixing bolt 35 through the first fixing through hole on the first connecting rod fixing plate 33 and threadably fix it to the first fixing threaded connection hole on the first connecting rod mounting seat 34, thereby completing the installation between the first connecting rod 32 and the isolating moving contact 3.

[0032] A grounding moving contact 4 is installed in the horizontal inner cavity, and a cavity 41 is provided in the grounding moving contact 4. A horizontally arranged second connecting rod 42 is installed in the cavity of the grounding moving contact 4. One side of the second connecting rod 42 is hinged to the grounding moving contact 4, and the other side of the second connecting rod 42 extends out of the grounding moving contact 4 and into the movable inner cavity 2. The second connecting rod 42 is arc-shaped.

[0033] The connection between the second connecting rod 42 and the grounding moving contact 4 is as follows: a vertically distributed second connecting rod fixing plate 43 is provided in the inner cavity of the grounding moving contact 4, and a second connecting rod mounting seat 44 is provided on the side of the second connecting rod fixing plate 43 close to the movable inner cavity 2, and the side end of the second connecting rod mounting seat 44 is hinged to the side of the second connecting rod 42 away from the movable inner cavity 2, and the connection is specifically as follows: a cavity for accommodating the second connecting rod 42 to extend into is provided at the side end of the second connecting rod mounting seat 44, and a second rotating shaft is installed at the side end of the second connecting rod 42, and at the same time, through holes corresponding to the second rotating shaft are provided on the two side walls of the cavity of the second connecting rod mounting seat 44 for accommodating the second rotating shaft to be movably embedded and installed, and after the top end of the second connecting rod 42 extends into the cavity at the side end of the second connecting rod mounting seat 44, the second rotating shaft of the second connecting rod 42 is respectively embedded in the through holes of the second connecting rod mounting seat 44, thereby realizing the hinged cooperation between the second connecting rod 42 and the second connecting rod mounting seat 44.

[0034] A second fixing threaded connection hole is provided in the middle position of the second connecting rod mounting seat 44 away from the active inner cavity 2, and a second guiding threaded connection hole is provided on both sides of the second fixing threaded connection hole on the second connecting rod mounting seat 44 respectively. A second fixing through hole and a second guiding through hole corresponding to the second fixing threaded connection hole and the second guiding threaded connection hole are provided on the second connecting rod fixing plate 43. A second fixing bolt 45 passes through the second fixing through hole on the second connecting rod fixing plate 43 and then threadedly engages with the second fixing threaded connection hole on the second connecting rod mounting seat 44, thereby achieving fixation between the second connecting rod mounting seat 44 and the second connecting rod fixing plate 43. A pair of second guiding screws 46 pass through the second guiding through hole on the second connecting rod fixing plate 43 and then threadedly engage with the second guiding threaded connection hole on the second connecting rod mounting seat 44, thereby achieving guide limiting between the second connecting rod mounting seat 44 and the second connecting rod fixing plate 43. The connection between the second connecting rod 42 and the grounding movable contact 4 is achieved by the cooperation between the second connecting rod fixing plate 43, the second connecting rod mounting seat 44, and the second fixing bolt 45, so as to realize the detachable connection and fixation between the second connecting rod 42 and the grounding movable contact 4, and facilitate the fixation of the second connecting rod. In addition, the cooperation of the second guide screw 46 is adopted, so that during installation, the relative position between the second connecting rod 42 and the grounding movable contact 4 is guided and limited to ensure the accuracy of the installation position. The installation of the second connecting rod 42 is similar to the installation of the first connecting rod 32, and will not be described in detail here.

[0035] A driving crank arm 5 is installed in the movable inner cavity 2, and one side of the driving crank arm 5 is hinged to the L-shaped conductor 1. The connection is as follows: a hexagonal connecting hole is provided on the side where the driving crank arm 5 is connected to the L-shaped conductor 1, and a hexagonal operating rod is installed in the hexagonal connecting hole. One end of the hexagonal operating rod extends from the side wall of the L-shaped conductor 1 and is connected to the operating mechanism of the electrical appliance, thereby driving the driving crank arm 5 to swing, and the other end of the hexagonal operating rod is movably matched with the other side wall of the L-shaped conductor 1, and this movable match can be achieved by the match between the bearing and the bearing seat.

[0036] The other side of the driving crank arm 5 is respectively provided with a first ear plate 52 extending in the direction of the isolating moving contact 3 and a second ear plate 53 extending in the direction of the grounding moving contact 4. The first ear plate 52 is provided with a first groove for accommodating the end of the first connecting rod 32 to be embedded. After the end of the first connecting rod 32 is embedded in the first groove, it is hinged to the first ear plate 52. The second ear plate 53 is provided with a second groove for accommodating the end of the second connecting rod 42 to be embedded. After the end of the second connecting rod 42 is embedded in the second groove, it is hinged to the second ear plate 53. The circle where the arc profile of the first connecting rod 32 and the circle where the arc profile of the second connecting rod 42 are located have the same center as the circle where the motion trajectory of the driving crank arm 5 is located. Such a design ensures that when the driving crank arm 5 swings, the first connecting rod 32 and the second connecting rod 42 can move along the same trajectory as the driving crank arm 5, thereby ensuring smooth movement.

[0037] A first opening 37 for accommodating the horizontal swing of the first connecting rod 32 is also provided on both sides of the bottom end of the isolating movable contact 3, and a second opening 47 for accommodating the vertical swing of the second connecting rod 42 is also provided on both upper and lower sides of the side of the grounding movable contact 4 close to the movable inner cavity 2. The first opening 37 on the isolating movable contact 3 and the second opening 47 on the grounding movable contact 4 are provided to cooperate with the movement of the first connecting rod 32 and the second connecting rod 42, to ensure that there are no obstructions on the movement tracks of the first connecting rod 32 and the second connecting rod 42, to avoid the first connecting rod 32 and the second connecting rod 42 from touching the isolating movable contact 3 or the grounding movable contact 4 when the first connecting rod 32 and the second connecting rod 42 move, and to ensure smooth operation.

[0038] A plurality of first elastic tensioners 38 are arranged between the outer wall of the isolating moving contact 3 and the L-shaped conductor 1, and a first annular groove for accommodating each of the first elastic tensioners 38 to be embedded and installed one by one is opened on the inner wall of the L-shaped conductor 1. A plurality of second elastic tensioners 48 are arranged between the grounding moving contact 4 and the L-shaped conductor 1, and a second annular groove for accommodating each of the second elastic tensioners 48 to be embedded and installed one by one is opened on the inner wall of the L-shaped conductor 1. The first elastic tensioner 38 and the second elastic tensioner 48 provided between the isolating moving contact 3 and the L-shaped conductor 1, and between the grounding moving contact 4 and the L-shaped conductor 1, utilize the contraction effect of the first elastic tensioner 38 and the second elastic tensioner 48 to ensure the fixation of the relative position between the isolating moving contact 3 and the L-shaped conductor 1, and the fixation of the relative position between the grounding moving contact 4 and the L-shaped conductor 1, so as to avoid slight movement of the isolating moving contact 3 or the grounding moving contact 4 when the isolating moving contact 3 or the grounding moving contact 4 is not in motion, thereby affecting the operation of the entire electrical appliance.

[0039] The combined electrical appliance in the present invention adopts an arc-shaped first connecting rod 32 and a second connecting rod 42 to cooperate with the driving crank arm 5, so that the movement trajectory of the first connecting rod 32 and the second connecting rod 42 is an arc-shaped trajectory that cooperates with the driving crank arm 5, so that when the isolating moving contact 3 and the grounding moving contact 4 move, the overall operation is smoother, avoiding the delay in the opening and closing of the entire electrical appliance due to the delay in movement, making the overall operation smoother, and the first connecting rod 32 and the second connecting rod 42 adopt an arc-shaped design. Even if an accident occurs and the first connecting rod 32 and the second connecting rod 42 come into contact with the isolating moving contact 3, the grounding moving contact 4 or the L-shaped conductor 1, the arc-shaped design of the first connecting rod 32 and the second connecting rod 42 will not cause scratches to the isolating moving contact 3, the grounding moving contact 4 or the L-shaped conductor 1, thereby ensuring the service life of the isolating moving contact 3, the grounding moving contact 4 or the L-shaped conductor 1.

[0040] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A composite high-voltage combination electrical appliance, characterized in that: include An L-shaped conductor, wherein the L-shaped conductor has a pair of vertical inner cavities and a horizontal inner cavity which are vertically distributed to each other, and the vertical inner cavity and the horizontal inner cavity are connected through a movable inner cavity; An isolating moving contact is installed in the vertical inner cavity, and a cavity is provided in the isolating moving contact. A vertically arranged first connecting rod is installed in the cavity of the isolating moving contact, one side of the first connecting rod is hinged with the isolating moving contact, and the other side extends out of the isolating moving contact and extends into the movable inner cavity, and the first connecting rod is in an arc shape; The connection between the first connecting rod and the isolating moving contact is as follows: a horizontally distributed first connecting rod fixing plate is provided in the inner cavity of the isolating moving contact, a first connecting rod mounting seat is provided at the bottom end of the first connecting rod fixing plate, the bottom end of the first connecting rod mounting seat is hingedly connected to the top end of the first connecting rod, a first fixing threaded connection hole is provided at the middle position of the top end of the first connecting rod mounting seat, a first guiding threaded connection hole is provided on both sides of the first fixing threaded connection hole on the first connecting rod mounting seat, a first fixing through hole and a first guiding through hole corresponding to the first fixing threaded connection hole and the first guiding threaded connection hole are provided on the first connecting rod fixing plate, a first fixing bolt is passed through the first fixing through hole on the first connecting rod fixing plate and then threadedly matched with the first fixing threaded connection hole on the first connecting rod mounting seat, thereby fixing the first connecting rod mounting seat and the first connecting rod fixing plate, a pair of first guide screws are passed through the first guiding through hole on the first connecting rod fixing plate and then threadedly matched with the first guiding threaded connection hole on the first connecting rod mounting seat, thereby guiding and limiting the first connecting rod mounting seat and the first connecting rod fixing plate; A grounding movable contact is installed in the horizontal inner cavity, and a cavity is provided in the grounding movable contact. A horizontally arranged second connecting rod is installed in the cavity of the grounding movable contact, one side of the second connecting rod is hinged with the grounding movable contact, and the other side extends out of the grounding movable contact and extends into the movable inner cavity, and the second connecting rod is in an arc shape; Both sides of the bottom end of the isolating movable contact are provided with first openings for accommodating the horizontal swing of the first connecting rod, and both upper and lower sides of the side of the grounding movable contact close to the movable inner cavity are provided with second openings for accommodating the vertical swing of the second connecting rod; A driving crank arm is installed in the movable inner cavity, one side of the driving crank arm is hinged to the L-shaped conductor, and the other side of the driving crank arm has a first ear plate extending in the direction of the isolating moving contact and a second ear plate extending in the direction of the grounding moving contact. The first ear plate has a first groove for accommodating the end of the first connecting rod to be embedded, and the end of the first connecting rod is embedded in the first groove and then hinged to the first ear plate. The second ear plate has a second groove for accommodating the end of the second connecting rod to be embedded, and the end of the second connecting rod is embedded in the second groove and then hinged to the second ear plate.

2. The composite high-voltage combined electrical appliance according to claim 1, characterized in that: The connection between the second connecting rod and the grounding moving contact is as follows: a vertically distributed second connecting rod fixing plate is provided in the inner cavity of the grounding moving contact, a second connecting rod mounting seat is arranged on a side of the second connecting rod fixing plate close to the movable inner cavity, a side end of the second connecting rod mounting seat is hinged to a side of the second connecting rod away from the movable inner cavity, a second fixing threaded connection hole is provided at the middle position of the side of the second connecting rod mounting seat away from the movable inner cavity, a second guiding threaded connection hole is provided on both sides of the second fixing threaded connection hole on the second connecting rod mounting seat, a second fixing through hole and a second guiding through hole corresponding to the second fixing threaded connection hole and the second guiding threaded connection hole are provided on the second connecting rod fixing plate, a second fixing bolt is passed through the second fixing through hole on the second connecting rod fixing plate and then threadedly engaged with the second fixing threaded connection hole on the second connecting rod mounting seat, thereby realizing the fixing between the second connecting rod mounting seat and the second connecting rod fixing plate, a pair of second guide screws are passed through the second guiding through hole on the second connecting rod fixing plate and then threadedly engaged with the second guiding threaded connection hole on the second connecting rod mounting seat, thereby realizing the guide limiting between the second connecting rod mounting seat and the second connecting rod fixing plate.

3. The composite high-voltage combined electrical appliance according to claim 1, characterized in that: A plurality of first elastic tensioning members are arranged between the outer wall of the isolating movable contact and the L-shaped conductor, and a plurality of second elastic tensioning members are arranged between the grounding movable contact and the L-shaped conductor.

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