Switch operation device for circuit breaker

Abstract

The invention belongs to the technical field of circuit breakers, and discloses a switch operation device for a circuit breaker, which comprises a circuit breaker main body, a support plate is fixed on the side wall of the circuit breaker main body, and an opening mechanism is mounted on the inner wall of an electric operation shell. When the circuit breaker body needs to be opened, the whole electric operation shell is fixed to the top end of the circuit breaker body through a fixing bolt and a screw hole, a first electric telescopic rod is started, a limiting cylinder at the top end of the first electric telescopic rod is inserted into a limiting rod, and a second electric telescopic rod is started; a second electric telescopic rod pushes a transmission plate and a limiting rod, and the limiting rod is connected with a limiting cylinder to drive the position of an opening plate to move, so that the opening plate can be in contact with an on-off switch during movement, the on-off switch is shifted, and the circuit breaker main body is changed into a starting state; therefore, the purpose that the device can conveniently open the circuit breaker main body is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit breakers, and in particular is a switch operating device for circuit breakers. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect current under normal circuit conditions, and can close, carry and disconnect current under abnormal circuit conditions within a specified time. It can be divided into high-voltage circuit breakers and low-voltage circuit breakers according to the scope of use. In low-voltage distribution network operations, circuit breakers are used to power on or off. When power failures such as leakage, grounding, short circuit, etc. occur, the switch of the circuit breaker will trip, which will affect the use of power equipment. In order to analyze the fault type and situation of the circuit breaker, it is necessary to operate the switch of the circuit breaker multiple times.

[0003] Existing operating circuit breakers still have disadvantages in actual use: including but not limited to the following situations: when the staff directly operates the switch of the circuit breaker with their hands, or the staff directly operates the switch with an insulating stick-like object, the staff in the related technology may face the risk of electric shock when operating directly with their hands, and the use of an insulating stick-like object will have a small contact area with the switch, making it inconvenient to operate the switch and causing damage to the switch.

[0004] A switch operating device is needed to automatically open and close the circuit breaker, and can open and close the specified area of ​​the circuit breaker with multiple groups of switches without affecting the switching of the circuit breaker. It is also necessary to synchronize the opening and closing of switches in different groups of the circuit breaker to improve the controllability of the device over the circuit breaker. Summary of the invention

[0005] In order to solve the problems mentioned in the above background technology, the present invention provides a switch operating device for a circuit breaker.

[0006] To achieve the above object, the present invention provides the following technical solution: a switch operating device for a circuit breaker, comprising a circuit breaker body, a support plate fixed to the side wall of the circuit breaker body, an on-off switch fixed to the top of the circuit breaker body, a screw hole opened at the top of the circuit breaker body, an electric operating housing fixed to the top of the circuit breaker body, and an opening mechanism installed on the inner wall of the electric operating housing; The opening mechanism includes an opening plate, a first electric telescopic rod and a limiting cylinder. The opening plate is arranged on the inner wall of the electric operation housing. The first electric telescopic rod is fixed to the bottom end of the opening plate. The top of the first electric telescopic rod is fixed to the limiting cylinder. The top of the electric operation housing is fixed to the second electric telescopic rod. The side wall of the second electric telescopic rod is fixed to a transmission plate. The bottom end of the transmission plate is fixed to the limiting rod.

[0007] Preferably, the outer wall of the opening plate is close to the inner wall of the electric operation housing, the opening plate and the electric operation housing are slidably connected, and three groups of the opening plates are provided, and the opening plates are arranged at equal intervals.

[0008] Preferably, three groups of the limiting rods are fixed to the bottom end of the transmission plate, the limiting rods are arranged at equal intervals about the central axis of the transmission plate, and the outer wall of the limiting rod is equal to the inner wall of the limiting cylinder.

[0009] Preferably, a closing mechanism is installed inside the electric operation housing, a fixing bolt is installed on the top of the circuit breaker body, a cover plate is fixed on the top of the electric operation housing, and a control button is fixed on the side wall of the electric operation housing.

[0010] Preferably, the closing mechanism includes a reset spring, a closing plate and a segmented clamping column, the reset spring is fixed to the inner wall of the electric operation housing, the side wall of the reset spring is fixed with a closing plate, the side wall of the closing plate is fixed with a segmented clamping column, the outer wall of the opening plate is provided with a limiting hole, the inner wall of the electric operation housing is fixed with a reset column, and the outer wall of the reset column is provided with a reset groove.

[0011] Preferably, the segmented clamping column is cylindrical, a convex ring is provided at the top of the segmented clamping column, a contraction inclined surface is provided on the convex ring, and at least three contraction openings are opened on the side wall of the top of the segmented clamping column.

[0012] Preferably, three groups of closing plates are provided, the closing plates are arranged at equal intervals about the central axis of the electric operation housing, the outer walls of the closing plates are close to the inner walls of the electric operation housing, and the closing plates and the electric operation housing are slidably connected.

[0013] Preferably, two groups of the return springs are provided, and the return springs are symmetrically distributed about the central axis of the closing plate. The return springs are used to pull the closing plate and keep it moving in the direction of opening the on-off switch.

[0014] Preferably, two groups of segmented clamping columns are provided, and the segmented clamping columns are symmetrically distributed about the central axis of the closing plate, and two groups of limiting holes are opened, and the limiting holes are symmetrically distributed about the central axis of the opening plate.

[0015] Preferably, six groups of the reset posts are fixed on the inner wall of the electric operation housing, the reset posts are arranged at equal intervals about the central axis of the electric operation housing, and the diameter of the limiting holes is equal to the diameter of the reset groove.

[0016] Preferably, the support plate is provided with two groups symmetrically distributed about the central axis of the circuit breaker body, the on-off switch is provided with three groups arranged at equal intervals about the central axis of the circuit breaker body, the on-off switch is arranged at the bottom ends of the opening plate and the closing plate, the screw holes are provided with four groups arranged at equal intervals about the central axis of the circuit breaker body, the fixing bolts and the screw holes are threadedly connected, and the control buttons are provided with two groups symmetrically distributed about the central axis of the electric operation housing.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention cooperates with structures such as an opening plate, a first electric telescopic rod, and a limiting cylinder, so that when the circuit breaker body needs to be opened, the device can fix the electric operation housing as a whole to the top of the circuit breaker body through fixing bolts and screw holes, start the first electric telescopic rod, so that the limiting cylinder at the top of the first electric telescopic rod is inserted into the inside of the limiting rod, and then start the second electric telescopic rod, so that the second electric telescopic rod pushes the transmission plate and the limiting rod, and then drives the position of the opening plate to move through the connection between the limiting rod and the limiting cylinder, so that the opening plate can contact the opening and closing switch when moving, and the opening and closing switch is turned to change the circuit breaker body into the starting state, so as to achieve the purpose of facilitating the device to open the circuit breaker body.

[0018] The present invention provides the cooperation of structures such as an opening plate and a reset spring, so that the device can drive the limiting cylinder at the top to be inserted into the limiting rod at the top by starting the first electric telescopic rods of different groups. At this time, the movement of the limiting rod can drive the opening plate stuck in the limiting rod to move synchronously, so that multiple groups of opening and closing switches can be synchronously opened and closed in sections, so as to achieve the purpose of facilitating the device to synchronously open and close the circuit breaker bodies of multiple groups of switches in designated areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall right side structure of the present invention; Figure 3 It is a schematic diagram of the circuit breaker structure of the present invention; Figure 4 It is a schematic structural diagram of the electric operating device of the present invention; Figure 5 It is a schematic diagram of the exploded cross-section structure of the electric operating mechanism of the present invention; Figure 6 It is a schematic diagram of the explosion structure of the opening and closing assembly of the present invention; Figure 7 It is a schematic diagram of the structure of the opening and closing assembly of the present invention in the closed state; Figure 8 It is a right side structural schematic diagram of the opening and closing assembly of the present invention in a closed state; Fig. 9 for Figure 8 A partial enlargement of the marked area.

[0020] In the figure: 1. circuit breaker body; 2. support plate; 3. opening and closing switch; 4. electric operation housing; 5. fixing bolt; 6. screw hole; 7. opening mechanism; 701. opening plate; 702. first electric telescopic rod; 703. limiting cylinder; 704. second electric telescopic rod; 705. transmission plate; 706. limiting rod; 8. closing mechanism; 801. reset spring; 802. closing plate; 803. segmented clamping column; 8031. contraction opening; 8032. convex ring; 8033. contraction inclined surface; 804. limiting hole; 805. reset column; 806. reset groove; 9. cover plate; 10. control button. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0022] like Figures 1 to 8 As shown, the present invention provides a switch operating device for a circuit breaker, comprising a circuit breaker body 1, a support plate 2 is fixed to the side wall of the circuit breaker body 1, an on-off switch 3 is fixed to the top of the circuit breaker body 1, a screw hole 6 is provided at the top of the circuit breaker body 1, an electric operating housing 4 is fixed to the top of the circuit breaker body 1, and an opening mechanism 7 is installed on the inner wall of the electric operating housing 4.

[0023] like Figures 1 to 8 As shown, the opening mechanism 7 includes an opening plate 701, a first electric telescopic rod 702 and a limiting cylinder 703. The opening plate 701 is arranged on the inner wall of the electric operation housing 4, and the outer wall of the opening plate 701 is close to the inner wall of the electric operation housing 4. The opening plate 701 and the electric operation housing 4 are slidably connected. Three groups of opening plates 701 are arranged, and the opening plates 701 are arranged at equal intervals.

[0024] like Figures 1 to 8 As shown, a first electric telescopic rod 702 is fixed to the bottom end of the opening plate 701, a limiting cylinder 703 is fixed to the top end of the first electric telescopic rod 702, a second electric telescopic rod 704 is fixed to the top end of the electric operation housing 4, a transmission plate 705 is fixed to the side wall of the second electric telescopic rod 704, a limiting rod 706 is fixed to the bottom end of the transmission plate 705, and three groups of limiting rods 706 are provided and fixed to the bottom end of the transmission plate 705, the limiting rods 706 are arranged at equal intervals about the central axis of the transmission plate 705, and the outer wall of the limiting rod 706 is equal to the inner wall of the limiting cylinder 703.

[0025] The above scheme is adopted: by fixing the electric operation housing 4 as a whole to the top of the circuit breaker body 1 through the fixing bolts 5 and the screw holes 6, starting the first electric telescopic rod 702, so that the limiting cylinder 703 at the top of the first electric telescopic rod 702 is inserted into the inside of the limiting rod 706, and then starting the second electric telescopic rod 704, so that the second electric telescopic rod 704 pushes the transmission plate 705 and the limiting rod 706, and then drives the position of the opening plate 701 to move through the connection between the limiting rod 706 and the limiting cylinder 703, so that the opening plate 701 can contact the on-off switch 3 when moving, and turn the on-off switch 3 to turn the circuit breaker body 1 into the starting state.

[0026] like Figures 1 to 8 As shown, a closing mechanism 8 is installed inside the electric operation housing 4 , a fixing bolt 5 is installed on the top of the circuit breaker body 1 , a cover plate 9 is fixed on the top of the electric operation housing 4 , and a control button 10 is fixed on the side wall of the electric operation housing 4 .

[0027] like Figures 1 to 8 As shown, the closing mechanism 8 includes a reset spring 801, a closing plate 802 and a segmented clamping column 803. The reset spring 801 is fixed to the inner wall of the electric operation housing 4. The closing plate 802 is fixed to the side wall of the reset spring 801. Three groups of closing plates 802 are arranged at equal intervals about the central axis of the electric operation housing 4. The outer wall of the closing plate 802 is close to the inner wall of the electric operation housing 4. The closing plate 802 and the electric operation housing 4 are slidably connected. Two groups of reset springs 801 are arranged. The reset springs 801 are symmetrically distributed about the central axis of the closing plate 802. The reset spring 801 is used to pull the closing plate 802 and keep it moving in the direction of opening the on-off switch 3.

[0028] like Figures 1 to 8 As shown, a segmented clamping column 803 is fixed to the side wall of the closing plate 802, a limiting hole 804 is provided on the outer wall of the opening plate 701, two groups of segmented clamping columns 803 are provided, and the segmented clamping columns 803 are symmetrically distributed about the central axis of the closing plate 802, two groups of limiting holes 804 are provided, and the limiting holes 804 are symmetrically distributed about the central axis of the opening plate 701, a reset column 805 is fixed to the inner wall of the electric operation housing 4, and a reset groove 806 is provided on the outer wall of the reset column 805, six groups of reset columns 805 are provided and fixed on the inner wall of the electric operation housing 4, the reset columns 805 are arranged at equal intervals about the central axis of the electric operation housing 4, and the diameter of the limiting hole 804 is equal to the diameter of the reset groove 806.

[0029] The segmented clamping column (803) is cylindrical, a convex ring (8032) is provided at the top of the segmented clamping column (803), a contraction inclined surface (8033) is provided on the convex ring (8032), and at least three contraction openings (8031) are provided on the side wall of the top of the segmented clamping column (803). By adopting the above scheme: when the opening plate 701 is moved to turn the opening and closing switch 3 to the open state, the convex ring 8032 can contact the edge of the limiting hole 804 provided on the opening plate 701. At this time, the contraction inclined surface 8033 guides the convex ring 8032 and the segmented clamping column 803 to contract radially, so that the convex ring 8032 can pass through the limiting hole 804. Then, the convex ring 8032 is expanded to the surroundings, so that the convex ring 8032 can hook the opening plate 701 from the other side. At this time, the second electric telescopic rod 704 is started to reset the transmission plate 705, thereby driving the opening plate 701 to reset, so that the limiting cylinder 703 and the closing plate 802 move with the opening plate 701, and the closing plate 802 contacts the opening and closing switch 3. After that, the on-off switch 3 can be closed. After the opening plate 701 moves further, the convex ring 8032 contacts the reset groove 806 provided on the reset column 805. After the contraction inclined surface 8033 contacts the reset groove 806, the segmented clamping column 803 and the convex ring 8032 are guided to contract, so that the convex ring 8032 can pass through the limiting hole 804. In the previous movement process, the return spring 801 always pulls the closing plate 802 and the segmented clamping column 803 back to make the convex ring 8032 close to the opening plate 701. At this time, the convex ring 8032 no longer hooks the opening plate 701 after contraction, and the return spring 801 pulls the closing plate 802 and the segmented clamping column 803 back to reset, so that it will not affect the process of the next switch.

[0030] like Figures 1 to 8 As shown, the support plate 2 is provided with two groups of symmetrically distributed about the central axis of the circuit breaker body 1, the on-off switch 3 is provided with three groups of equally spaced arrangements about the central axis of the circuit breaker body 1, the on-off switch 3 is arranged at the bottom ends of the opening plate 701 and the closing plate 802, the screw holes 6 are provided with four groups of equally spaced arrangements about the central axis of the circuit breaker body 1, the fixing bolts 5 and the screw holes 6 are threadedly connected, and the control buttons 10 are provided with two groups of symmetrically distributed about the central axis of the electric operation housing 4.

[0031] The above scheme is adopted: by starting the first electric telescopic rods 702 of different groups, the top limit cylinder 703 is driven to be inserted into the top limit rod 706. At this time, the movement of the limit rod 706 can drive the opening plate 701 stuck in the limit rod 706 to move synchronously, so that multiple groups of opening and closing switches 3 can be opened and closed in sections synchronously.

[0032] The working principle and use process of the present invention are as follows: the electric operation housing 4 is fixed to the top of the circuit breaker body 1 through the fixing bolts 5 and the screw holes 6, the first electric telescopic rod 702 is started, so that the limiting cylinder 703 at the top of the first electric telescopic rod 702 is inserted into the inside of the limiting rod 706, and the second electric telescopic rod 704 is started, so that the second electric telescopic rod 704 pushes the transmission plate 705 and the limiting rod 706, and then the position of the opening plate 701 is moved through the connection between the limiting rod 706 and the limiting cylinder 703, so that the opening plate 701 can contact the opening plate 701 when moving. The on-off switch 3 is turned on and the circuit breaker body 1 is turned into the starting state. When the on-off switch 3 is turned to the opening state by moving the opening plate 701, the convex ring 8032 can contact the edge of the limiting hole 804 provided on the opening plate 701. At this time, the contraction inclined surface 8033 guides the convex ring 8032 and the segmented clamping column 803 to contract radially, so that the convex ring 8032 can pass through the limiting hole 804. Then, the convex ring 8032 is expanded to the surroundings, so that the convex ring 8032 can hook the opening plate 701 from the other side. At this time, the second electric telescopic rod 704 is started to move the transmission plate 705. The opening plate 701 is reset, thereby driving the opening plate 701 to reset, so that the limiting cylinder 703 and the closing plate 802 move with the opening plate 701. After the closing plate 802 contacts the opening and closing switch 3, the opening and closing switch 3 can be closed. After the opening plate 701 moves further, the convex ring 8032 contacts the reset groove 806 provided on the reset column 805. After the contraction inclined surface 8033 contacts the reset groove 806, the segmented clamping column 803 and the convex ring 8032 are guided to contract, so that the convex ring 8032 can pass through the limiting hole 804. In the previous movement process, the reset spring 801 always pulls the closing plate 802 and the segmented clamping column 805 back. The segmented clamping column 803 makes the convex ring 8032 close to the opening plate 701. At this time, the convex ring 8032 shrinks and no longer hooks the opening plate 701. The reset spring 801 pulls the closing plate 802 and the segmented clamping column 803 to move back and reset, so that it will not affect the next switch process. By starting the first electric telescopic rod 702 of different groups, the top limit cylinder 703 is driven to insert into the top limit rod 706. At this time, the movement of the limit rod 706 can drive the opening plate 701 stuck in the limit rod 706 to move synchronously, so that the multiple groups of opening and closing switches 3 are synchronously opened and closed in sections.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A switch operating device for a circuit breaker, comprising a circuit breaker body (1), characterized in that: A support plate (2) is fixed to the side wall of the circuit breaker body (1), an on-off switch (3) is fixed to the top of the circuit breaker body (1), a screw hole (6) is provided at the top of the circuit breaker body (1), an electric operating housing (4) is fixed to the top of the circuit breaker body (1), and an opening mechanism (7) is installed on the inner wall of the electric operating housing (4); The opening mechanism (7) comprises an opening plate (701), a first electric telescopic rod (702) and a limiting cylinder (703); the opening plate (701) is arranged on the inner wall of the electric operation housing (4); the first electric telescopic rod (702) is fixed to the bottom end of the opening plate (701); the limiting cylinder (703) is fixed to the top end of the first electric telescopic rod (702); the second electric telescopic rod (704) is fixed to the top end of the electric operation housing (4); a transmission plate (705) is fixed to the side wall of the second electric telescopic rod (704); and the limiting rod (706) is fixed to the bottom end of the transmission plate (705).

2. The switch operating device for a circuit breaker according to claim 1, characterized in that: The outer wall of the opening plate (701) is close to the inner wall of the electric operation housing (4); the opening plate (701) and the electric operation housing (4) are slidably connected; three groups of the opening plates (701) are provided; and the opening plates (701) are arranged at equal intervals.

3. The switch operating device for a circuit breaker according to claim 1, characterized in that: The limiting rods (706) are provided with three groups fixed at the bottom end of the transmission plate (705), the limiting rods (706) are arranged at equal intervals about the central axis of the transmission plate (705), and the outer wall of the limiting rods (706) is equal to the inner wall of the limiting cylinder (703).

4. The switch operating device for a circuit breaker according to claim 1, characterized in that: A closing mechanism (8) is installed inside the electric operating housing (4), a fixing bolt (5) is installed at the top of the circuit breaker body (1), a cover plate (9) is fixed to the top of the electric operating housing (4), and a control button (10) is fixed to the side wall of the electric operating housing (4).

5. The switch operating device for a circuit breaker according to claim 4, characterized in that: The closing mechanism (8) comprises a reset spring (801), a closing plate (802) and a segmented clamping column (803); the reset spring (801) is fixed to the inner wall of the electric operation housing (4); the closing plate (802) is fixed to the side wall of the reset spring (801); the segmented clamping column (803) is fixed to the side wall of the closing plate (802); a limiting hole (804) is provided on the outer wall of the opening plate (701); a reset column (805) is fixed to the inner wall of the electric operation housing (4); and a reset groove (806) is provided on the outer wall of the reset column (805).

6. The switch operating device for a circuit breaker according to claim 5, characterized in that: The segmented clamping column (803) is cylindrical, a convex ring (8032) is provided at the top of the segmented clamping column (803), a contraction inclined surface (8033) is provided on the convex ring (8032), and at least three contraction openings (8031) are provided on the side wall at the top of the segmented clamping column (803).

7. The switch operating device for a circuit breaker according to claim 5, characterized in that: Three groups of closing plates (802) are provided, the closing plates (802) are arranged at equal intervals about the central axis of the electric operation housing (4), the outer walls of the closing plates (802) are close to the inner walls of the electric operation housing (4), and the closing plates (802) and the electric operation housing (4) are slidably connected; Two groups of the return springs (801) are provided. The return springs (801) are symmetrically distributed about the central axis of the closing plate (802). The return springs (801) are used to pull the closing plate (802) and keep it moving in the direction of opening the on-off switch (3).

8. The switch operating device for a circuit breaker according to claim 5, characterized in that: The segmented clamping columns (803) are provided in two groups, and the segmented clamping columns (803) are symmetrically distributed about the central axis of the closing plate (802). The position limiting holes (804) are provided in two groups, and the position limiting holes (804) are symmetrically distributed about the central axis of the opening plate (701).

9. The switch operating device for a circuit breaker according to claim 5, characterized in that: The reset columns (805) are provided in six groups and are fixed on the inner wall of the electric operation housing (4); the reset columns (805) are arranged at equal intervals about the central axis of the electric operation housing (4); and the diameter of the limiting hole (804) is equal to the diameter of the reset groove (806).

10. The switch operating device for a circuit breaker according to claim 5, characterized in that: The support plate (2) is provided with two groups of symmetrically distributed about the central axis of the circuit breaker body (1); the on-off switch (3) is provided with three groups of equidistantly arranged about the central axis of the circuit breaker body (1); the on-off switch (3) is provided at the bottom ends of the opening plate (701) and the closing plate (802); the screw holes (6) are provided with four groups of equidistantly arranged about the central axis of the circuit breaker body (1); the fixing bolts (5) and the screw holes (6) are threadedly connected; and the control buttons (10) are provided with two groups of symmetrically distributed about the central axis of the electric operation housing (4).

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