Mechanical transmission and switchgear

Abstract

The utility model provides a kind of mechanism transmission device and switch device, the utility model mechanism transmission device includes pivot arm fixed seat, mechanism transmission shaft arm, connecting rod, dynamic cooperation arm and the dynamic cooperation structure for with circuit breaker transmission main shaft dynamic cooperation, wherein, the pivot arm fixed seat and dynamic cooperation structure are respectively arranged on same panel, the pivot arm fixed seat is connected with the mechanism transmission shaft arm rotation by bearing, one end of the mechanism transmission shaft arm is equipped with with the quick release structure of circuit breaker mechanism transmission main shaft butt joint, other end is fixedly connected with one end of the connecting rod, other end of the connecting rod is connected with one end of the dynamic cooperation arm, other end of the dynamic cooperation arm is connected with the dynamic cooperation structure, the circuit breaker mechanism transmission main shaft can be driven by mechanism transmission device circuit breaker transmission main shaft movement.The utility model mechanism transmission device and circuit breaker mechanism can be quickly disassembled, improve the convenience of overhaul maintenance.

Description

Technical Field

[0001] This utility model relates to the field of transmission structures, specifically to a mechanism transmission device, and also to a switching device for mounting the mechanism transmission device. Background Technology

[0002] In existing switchgear, due to height limitations, a linkage mechanism is required to lower the installation position of the circuit breaker mechanism, leaving space for the instrument box. The moving parts are located behind the instrument box and are obscured by it. If the mechanism is damaged and needs replacement, the linkage mechanism must be disassembled first. However, because the linkage mechanism is obscured by the instrument box, the instrument box must be disassembled first to allow sufficient space before the linkage mechanism can be disassembled. Then, the circuit breaker mechanism, which is fixedly connected to the linkage mechanism, can be disassembled. This structure is extremely inconvenient for the inspection and maintenance of the mechanism. Therefore, a new mechanism transmission method needs to be designed. Utility Model Content

[0003] To address the problems in the prior art, this utility model provides a mechanism transmission device and a switching device for mounting the mechanism transmission device. This utility model connects the circuit breaker mechanism and the mechanism transmission device via a quick-release structure. When the mechanism requires inspection and maintenance, only the mechanism itself needs to be disassembled; there is no need to disassemble the mechanism transmission device and instrument box, thus greatly improving the convenience of inspection and maintenance.

[0004] This utility model relates to a mechanism transmission device, comprising a rotating shaft crank arm fixing seat, a mechanism transmission shaft crank arm, a connecting rod, a dynamically engaging crank arm, and a dynamically engaging structure for dynamically engaging with the main transmission shaft of a circuit breaker. The rotating shaft crank arm fixing seat and the dynamically engaging structure are respectively mounted on the same panel. The rotating shaft crank arm fixing seat is rotatably connected to the mechanism transmission shaft crank arm via a bearing. One end of the mechanism transmission shaft crank arm is provided with a quick-release structure for docking with the main transmission shaft of the circuit breaker mechanism, and the other end is fixedly connected to one end of the connecting rod. The other end of the connecting rod is connected to one end of the dynamically engaging crank arm, and the other end of the dynamically engaging crank arm is connected to the dynamically engaging structure. The main transmission shaft of the circuit breaker mechanism can be driven to move via the mechanism transmission device.

[0005] Furthermore, the quick-release structure is a limiting connection groove that cooperates with the main drive shaft of the circuit breaker mechanism, and the cross-section of the main drive shaft of the circuit breaker mechanism matches the cross-sectional shape of the limiting connection groove.

[0006] Furthermore, the cross-section of the limiting connection groove is polygonal or elliptical.

[0007] Furthermore, one end of the transmission shaft crank arm and the moving engagement crank arm of the mechanism are provided with a U-shaped groove, and the two side walls of the U-shaped groove and both ends of the connecting rod are provided with fixing holes. The end of the connecting rod is set in the U-shaped groove and is fixedly connected to the transmission shaft crank arm and the moving engagement crank arm of the mechanism respectively through a connecting pin.

[0008] This utility model also provides a switchgear for installing the aforementioned mechanism transmission device, including a housing and a circuit breaker disposed within the housing. The mechanism transmission device is disposed on the gas box panel of the housing. The switchgear also includes an instrument box and a circuit breaker mechanism disposed on the outside of the housing. The circuit breaker mechanism is disposed below the instrument box and is connected to the quick-release structure. The moving-fit structure is disposed on the rear side of the instrument box.

[0009] Furthermore, the gas box panel is provided with a number of mechanism mounting posts, and the circuit breaker mechanism is provided with fixing holes at positions corresponding to the mechanism mounting posts. The circuit breaker mechanism is fixed to the gas box panel by the mechanism mounting posts and fastening bolts.

[0010] Compared with existing technologies, the advantages of this invention are: through a new mechanism transmission method, the mechanism transmission device and the circuit breaker mechanism can be quickly disassembled, thus ensuring that disassembly and assembly do not interfere with each other. When the mechanism needs maintenance, only the mechanism needs to be disassembled; there is no need to disassemble the mechanism transmission device and instrument box. The mechanism can be quickly disassembled and assembled, facilitating maintenance and greatly improving the convenience of maintenance. Attached Figure Description

[0011] To more clearly illustrate the solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 and Figure 2 This is a schematic diagram of the transmission device structure of this utility model; Figure 3 and Figure 4 This is a schematic diagram of the crank arm structure of the transmission shaft of this utility model. Figure 5 This is a schematic diagram of the assembly of the switchgear of this utility model; Figure 6 This is a schematic diagram of the circuit breaker mechanism and housing separation structure of this utility model. Detailed Implementation

[0013] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish different objects, not to describe a particular order.

[0014] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention can be combined with other embodiments.

[0015] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0016] like Figure 1 and Figure 2 As shown, the present invention relates to a mechanism transmission device, which is installed on the gas box panel 10 of a switchgear. It includes a rotating shaft crank arm fixing seat 6, a mechanism transmission shaft crank arm 9, a connecting rod 4, a moving engagement crank arm 3, and a moving engagement structure 1 for moving engagement with the circuit breaker transmission main shaft 2. The rotating shaft crank arm fixing seat 6 and the moving engagement structure 11 are respectively installed on the gas box panel 10. The rotating shaft crank arm fixing seat 6 is rotatably connected to the mechanism transmission shaft crank arm 9 via a bearing 7. One end of the mechanism transmission shaft crank arm 9 has a quick-release structure for docking with the circuit breaker mechanism transmission main shaft 5, and the other end is fixedly connected to one end of the connecting rod 4. The other end of the connecting rod 4 is connected to one end of the moving engagement crank arm 3, and the other end of the moving engagement crank arm 3 is connected to the moving engagement structure 1. The circuit breaker mechanism transmission main shaft 5 can drive the circuit breaker transmission main shaft 2 to move through the mechanism transmission device.

[0017] like Figure 3 and Figure 4As shown, the quick-release structure in this example includes a boss 901 on one end surface of the crank arm 9 of the mechanism drive shaft. The boss 901 has a limiting connecting groove 9011 in the middle that cooperates with the main drive shaft 5 of the circuit breaker mechanism. The cross-section of the main drive shaft 5 of the circuit breaker mechanism matches the cross-sectional shape of the limiting connecting groove 9011. The cross-section of the limiting connecting groove 9011 is polygonal or elliptical, etc. In this example, it is a regular hexagonal structure.

[0018] In this example, one end of the transmission shaft crank arm 9 of the mechanism is provided with a U-shaped groove 902. The two side walls of the U-shaped groove 902 and both ends of the connecting rod 4 are provided with fixing holes 903. Similarly, the end of the moving engagement crank arm 3 connected to the connecting rod 4 is also provided with a U-shaped groove. The end of the connecting rod 4 is located in the U-shaped groove 902 and is fixedly connected to the transmission shaft crank arm 9 and the moving engagement crank arm 3 of the mechanism through the connecting pin 8.

[0019] When the main drive shaft 5 of the circuit breaker mechanism rotates, the dynamic engagement mechanism rotates under the action of the connecting rod 4, thereby driving the main drive shaft 2 of the circuit breaker to swing, realizing the opening or closing operation of the circuit breaker.

[0020] like Figure 5 and Figure 6 As shown, the present invention provides a switchgear, including a housing and a circuit breaker disposed within the housing. The mechanism transmission device is disposed on the gas box panel 10 of the housing. The switchgear also includes an instrument box 11 and a circuit breaker mechanism 12 disposed on the outside of the housing. The circuit breaker mechanism 12 is disposed below the instrument box 11 and is connected to the quick-release structure. The moving fit structure is disposed on the rear side of the instrument box.

[0021] In existing technology, because the linkage device is fixedly connected to the circuit breaker mechanism, when the circuit breaker mechanism needs to be disassembled, the linkage device must also be removed from the housing. However, to disassemble the linkage device, the obstructing instrument box 11 must first be removed before the linkage device can be disassembled. This invention, through a new mechanism transmission method, allows for quick disassembly of the mechanism transmission device and the circuit breaker mechanism without altering the existing switchgear layout, thus ensuring that disassembly and assembly do not interfere with each other. When the mechanism requires maintenance, only the mechanism itself needs to be disassembled; the mechanism transmission device and instrument box do not need to be disassembled. This rapid disassembly and assembly greatly improves the convenience of maintenance. like Figure 6 As shown, the gas box panel 10 in this example is provided with several mechanism mounting columns 13. The mechanism base plate 121 of the circuit breaker mechanism 12 is provided with fixing holes at positions corresponding to the mechanism mounting columns 13. The circuit breaker mechanism 12 is fixed to the gas box panel 10 by the mechanism mounting columns 13 and fastening bolts.

[0022] When the circuit breaker mechanism 12 needs to be disassembled, first insert the mechanism mounting post 13 into the fixing hole. When the mechanism base plate 121 is close to the end face of the mechanism mounting post 13, the circuit breaker mechanism drive shaft 5 is inserted into the corresponding limiting connection groove 9011. Then, it is fixed by the fastening bolts, and the mechanism installation is completed. When the circuit breaker mechanism needs to be removed for inspection and maintenance, first remove the fastening bolts, and then pull the circuit breaker mechanism 12 away from the gas box panel 10, so that the circuit breaker mechanism drive shaft 5 leaves the limiting connection groove 9011, and the mechanism mounting post 13 disengages from the fixing hole, thus completing the disassembly.

[0023] The specific embodiments described above are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes but is not limited to the specific embodiments described above. All equivalent changes made in accordance with this utility model are within the protection scope of this utility model.

Claims

1. A mechanism transmission device, characterized in that: The device includes a rotating shaft crank arm fixing seat, a mechanism transmission shaft crank arm, a connecting rod, a movable engagement crank arm, and a movable engagement structure for movable engagement with the circuit breaker drive main shaft. The rotating shaft crank arm fixing seat and the movable engagement structure are respectively mounted on the same panel. The rotating shaft crank arm fixing seat is rotatably connected to the mechanism transmission shaft crank arm via a bearing. One end of the mechanism transmission shaft crank arm has a quick-release structure for docking with the circuit breaker mechanism drive main shaft, and the other end is fixedly connected to one end of the connecting rod. The other end of the connecting rod is connected to one end of the movable engagement crank arm, and the other end of the movable engagement crank arm is connected to the movable engagement structure. The circuit breaker mechanism drive main shaft can be driven to move via a mechanism transmission device.

2. The mechanism transmission device according to claim 1, characterized in that: The quick-release structure is a limiting connection groove that cooperates with the main drive shaft of the circuit breaker mechanism, and the cross-section of the main drive shaft of the circuit breaker mechanism matches the cross-sectional shape of the limiting connection groove.

3. The mechanism transmission device according to claim 2, characterized in that: The cross-section of the limiting connection groove is polygonal or elliptical.

4. The mechanism transmission device according to claim 1, characterized in that: The transmission shaft crank arm and the moving engagement crank arm of the mechanism are each provided with a U-shaped groove at one end. The two side walls of the U-shaped groove and the two ends of the connecting rod are provided with fixing holes. The end of the connecting rod is set in the U-shaped groove and is fixedly connected to the transmission shaft crank arm and the moving engagement crank arm of the mechanism respectively by a connecting pin.

5. A switching device, comprising the mechanism transmission device according to any one of claims 1-4, characterized in that: The device includes a housing and a circuit breaker housed inside the housing. The transmission mechanism is located on the air box panel of the housing. It also includes an instrument box and a circuit breaker mechanism located outside the housing. The circuit breaker mechanism is located below the instrument box and is connected to the quick-release structure. The moving fit structure is located on the rear side of the instrument box.

6. The switching device according to claim 5, characterized in that: The gas box panel is provided with several mechanism mounting columns. The circuit breaker mechanism is provided with fixing holes at the corresponding positions of the mechanism mounting columns. The circuit breaker mechanism is fixed to the gas box panel by the mechanism mounting columns and fastening bolts.

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