A switch operating device for a circuit breaker

Abstract

The present invention belongs to the technical field of circuit breakers and discloses 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, and an opening mechanism installed on the inner wall of an electric operating housing. By arranging the opening plate, a first electric telescopic rod, a limiting cylinder and other structures in cooperation, the device can, when it is necessary to open the circuit breaker body, fix the entire electric operating housing to the top of the circuit breaker body through fixing bolts and screw holes, activate the first electric telescopic rod, insert the limiting cylinder at the top of the first electric telescopic rod into the interior of the limiting rod, activate the second electric telescopic rod, so that the second electric telescopic rod pushes the transmission plate and the limiting rod, and the position of the opening plate is moved by 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 toggled to put the circuit breaker body into the starting state, thereby achieving the purpose of facilitating the device to open the circuit breaker body.

Description

Technical Field

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

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and closing, carrying, and interrupting current under abnormal circuit conditions within a specified timeframe. It can be categorized by its scope of use as either high-voltage or low-voltage. Circuit breakers are used to supply or interrupt power in low-voltage distribution network operations. In the event of power failures such as leakage, ground faults, and short circuits, the circuit breaker may trip, impacting the operation of electrical equipment. To analyze the type and severity of the fault, the circuit breaker must be operated multiple times.

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

[0004] A switch operating device is needed to automatically open and close a circuit breaker, and to be able to open and close a specified area of a circuit breaker with multiple groups of switches without affecting the opening and closing 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.

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

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: 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 opening and closing switch fixed to the top of the circuit breaker body, a screw hole being provided at the top of the circuit breaker body, an electric operation housing fixed to the top of the circuit breaker body, an opening mechanism being installed on the inner wall of the electric operation housing; the opening mechanism comprising an opening plate, a first electric telescopic rod and a limiting cylinder, the opening plate being arranged on the inner wall of the electric operation housing, the first electric telescopic rod being fixed to the bottom end inside the opening plate, the limiting cylinder being fixed to the top end of the first electric telescopic rod, the second electric telescopic rod being fixed to the top end of the electric operation housing, a transmission plate being fixed to the side wall of the second electric telescopic rod, and the limiting rod being fixed to the bottom end of the transmission plate.

[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 diameter of the outer wall of the limiting rod is equal to the diameter of 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 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. 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 reset posts are provided and 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. The diameter of the limiting hole 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 beneficial effects of the present invention are as follows: The present invention cooperates with structures such as an opening plate, a first electric telescopic rod, and a limit cylinder, so that when the circuit breaker body needs to be opened, the device can fix the entire electric operating housing to the top of the circuit breaker body through fixing bolts and screw holes, start the first electric telescopic rod, and insert the limit cylinder at the top of the first electric telescopic rod into the interior of the limit rod, and then start the second electric telescopic rod, so that the second electric telescopic rod pushes the transmission plate and the limit rod, and then drives the position of the opening plate to move through the connection between the limit rod and the limit cylinder, so that the opening plate can contact the opening and closing switch when moving, and turn the opening and closing switch to turn 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 a combination of structures such as an opening plate and a return spring, so that the device can drive the top limit cylinder to be inserted into the top limit rod by activating the first electric telescopic rod of different groups. At this time, the movement of the limit rod can drive the opening plate stuck in the limit rod to move synchronously, thereby synchronously opening and closing multiple groups of opening and closing switches in sections, thereby achieving the purpose of facilitating the synchronous opening and closing of specified areas of the circuit breaker bodies of multiple groups of switches. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall right side structure of the present invention;

[0021] Figure 3 This is a schematic structural diagram of a circuit breaker according to the present invention;

[0022] Figure 4 It is a structural schematic diagram of the electric operating device of the present invention;

[0023] Figure 5 It is a schematic diagram of the exploded cross-section structure of the electric operating mechanism of the present invention;

[0024] Figure 6 This is a schematic diagram of the explosion structure of the opening and closing component of the present invention;

[0025] Figure 7This is a schematic structural diagram of the opening and closing assembly of the present invention in a closed state;

[0026] Figure 8 This is a schematic diagram of the right side structure of the opening and closing assembly of the present invention in the closed state;

[0027] Figure 9 for Figure 8 A partial enlargement of the marked area.

[0028] 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. Return spring; 802. Closing plate; 803. Segmented clamping column; 8031. Retracting opening; 8032. Raised ring; 8033. Retracting inclined surface; 804. Limiting hole; 805. Reset column; 806. Reset groove; 9. Cover plate; 10. Control button. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] like Figures 1 to 8 As shown, the present invention provides a switch operating device for a circuit breaker, including a circuit breaker body 1, a support plate 2 fixed to the side wall of the circuit breaker body 1, an on-off switch 3 fixed to the top of the circuit breaker body 1, a screw hole 6 formed at the top of the circuit breaker body 1, an electric operating housing 4 fixed to the top of the circuit breaker body 1, and an opening mechanism 7 installed on the inner wall of the electric operating housing 4.

[0031] 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 provided, and the opening plates 701 are arranged at equal intervals.

[0032] like Figures 1 to 8As 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, and a limiting rod 706 is fixed to the bottom end of the transmission plate 705. The limiting rods 706 are provided in three groups and are 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 diameter of the outer wall of the limiting rod 706 is equal to the diameter of the inner wall of the limiting cylinder 703.

[0033] The above solution is adopted: by fixing the entire electric operating housing 4 to the top of the circuit breaker body 1 through the fixing bolts 5 and the screw holes 6, activating 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 interior of the limiting rod 706, and then activating 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 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 on-off switch 3 when moving, and the on-off switch 3 is toggled, thereby changing the circuit breaker body 1 to the started state.

[0034] 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.

[0035] 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 side wall of the reset spring 801 is fixed with a closing plate 802. 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 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 provided. 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.

[0036] like Figures 1 to 8As shown, a segmented clamping column 803 is fixed to the side wall of the closing plate 802, and 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 fixed to the inner wall of the electric operation housing 4, and the reset columns 805 are arranged at equal intervals about the central axis of the electric operation housing 4. The diameter of the limiting hole 804 is equal to the diameter of the reset groove 806.

[0037] The segmented clamping column 803 is cylindrical, and a convex ring 8032 is provided at the top of the segmented clamping column 803 . A contraction slope 8033 is provided on the convex ring 8032 . At least three contraction openings 8031 are opened on the side wall of the top of the segmented clamping column 803 .

[0038] The above solution is adopted: when the opening plate 701 is moved to toggle 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 expands to the four sides 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. After the closing plate 802 contacts the opening and closing switch 3, the opening and closing switch 3 can be closed, and the opening plate 701 is further opened. After moving, 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. During the previous movement, the return spring 801 always pulls back the closing plate 802 and the segmented clamping column 803, so that the convex ring 8032 is 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 next switching process.

[0039] like Figures 1 to 8As 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 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.

[0040] 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, thereby opening and closing multiple groups of opening and closing switches 3 in sections and synchronously.

[0041] 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 interior 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 on-off switch 3 when moving, and the on-off switch 3 is toggled to turn the circuit breaker body 1 into the started state. When the on-off switch 3 is toggled to the on state by moving the opening plate 701, the convex ring 8032 can be aligned with the opening plate 701. The edge of the limiting hole 804 opened on the plate 701 contacts the edge. 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 expands to the surrounding areas 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. After the closing plate 802 contacts the opening and closing switch 3, it can close the opening and closing switch 3. After the opening plate 701 moves further, the convex ring 8032 contacts the reset column 805 When the cam 8032 is in the closed position, the cam 8032 is in the closed position, and the cam 8032 is in the closed position, so that the cam 8032 can pass through the limit hole 804.

[0042] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and the scope of the 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 operating 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 operating 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); A closing mechanism (8) is installed inside the electric operation housing (4).

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, and 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), and the limiting rods (706) are arranged at equal intervals with respect to the central axis of the transmission plate (705). The diameter of the outer wall of the limiting rod (706) is equal to the diameter of the inner wall of the limiting cylinder (703).

4. The switch operating device for a circuit breaker according to claim 1, wherein: 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).

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 operating 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 operating 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, and a convex ring (8032) is provided at the top of the segmented clamping column (803), and a contraction inclined surface (8033) is provided on the convex ring (8032). At least three contraction openings (8031) are opened on the side wall of the top of the segmented clamping column (803).

7. The switch operating device for a circuit breaker according to claim 5, characterized in that: The closing plates (802) are provided in three groups, and the closing plates (802) are arranged at equal intervals about the central axis of the electric operating housing (4). The outer wall of the closing plate (802) is close to the inner wall of the electric operating housing (4), and the closing plate (802) and the electric operating housing (4) are slidably connected; the reset springs (801) are provided in two groups, and the reset springs (801) are symmetrically distributed about the central axis of the closing plate (802). The reset 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 limiting holes (804) are provided in two groups, and the 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 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). 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 symmetrically distributed 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 hole (6) is provided with four groups of symmetrically distributed about the central axis of the circuit breaker body (1); the fixing bolt (5) and the screw hole (6) are threadedly connected; and the control button (10) is provided with two groups of symmetrically distributed about the central axis of the electric operation housing (4).

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