Mechanical characteristic running-in device for air cylinder and spring contact finger of circuit breaker

Abstract

The utility model discloses a mechanical characteristic running-in device for a circuit breaker air cylinder and a spring contact finger. The mechanical characteristic running-in device comprises a supporting assembly, a driving assembly, a transmission assembly and a sliding assembly. The supporting assembly comprises a bottom frame, a circuit breaker air cylinder to be subjected to running-in is installed on the bottom frame, the sliding assembly is located on the bottom frame, a spring contact finger to be subjected to running-in is located on the sliding assembly, one end of the spring contact finger to be subjected to running-in is located in the air cylinder, and the driving assembly and the transmission assembly are both located on the bottom frame. The driving assembly is connected with the sliding assembly through a transmission assembly and used for driving the sliding assembly to slide through the transmission assembly, and then the spring contact finger on the sliding assembly is driven to do reciprocating motion in the air cylinder. The utility model has the advantages of simple structure, simple disassembly and assembly, improved production efficiency and the like.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of electric power equipment, and in particular to a mechanical characteristic running-in device for a circuit breaker pressure cylinder and a spring contact finger. Background Art

[0002] Sulfur hexafluoride enclosed switchgear (GIS) is one of the important high-voltage power equipment. Before the equipment leaves the factory, it needs to undergo strict factory tests, of which 200 running-in mechanical characteristic tests are one of the important assessment items. After the equipment is assembled into one, it needs to be vacuumed and filled with SF6 gas to 0.6MPa for running-in and separation speed characteristic tests. Since the circuit breaker is equipped with a hydraulic spring mechanism, the motor needs to be re-pressurized after each separation and combination, and the motor cannot run for a long time, that is, it needs to be left to stand for 3 minutes after each separation and combination, and the running-in test takes 600 minutes, which has low production efficiency. Utility Model Content

[0003] In view of the technical problems existing in the prior art, the utility model provides a mechanical characteristic running-in device for a circuit breaker pressure cylinder and a spring contact finger, which has a simple structure and improves production efficiency.

[0004] In order to solve the above technical problems, the technical solution proposed by the utility model is:

[0005] A mechanical property running-in device for a circuit breaker air cylinder and a spring contact finger, comprising a supporting assembly, a driving assembly, a transmission assembly and a sliding assembly; the supporting assembly comprises a base frame, the circuit breaker air cylinder to be run-in is mounted on the base frame, the sliding assembly is located on the base frame, the spring contact finger to be run-in is located on the sliding assembly and one end of the spring contact finger is located inside the air cylinder, the driving assembly and the transmission assembly are both located on the base frame, the driving assembly is connected to the sliding assembly via the transmission assembly, and is used to drive the sliding assembly to slide via the transmission assembly, thereby driving the spring contact finger on the sliding assembly to reciprocate inside the air cylinder.

[0006] As a further improvement of the above technical solution:

[0007] The transmission assembly includes a crank arm and a connecting rod, one end of the crank arm is connected to the rotating end of the driving assembly, the other end of the crank arm is movably connected to one end of the connecting rod, and the other end of the connecting rod is movably connected to the sliding assembly.

[0008] The connecting rod is a telescopic connecting rod.

[0009] The other end of the crank arm is connected to one end of the first joint through a pin shaft, and the other end of the first joint is threadedly connected to one end of the connecting rod; the other end of the connecting rod is connected to the sliding assembly through a second joint, and the other end of the connecting rod is threadedly connected to one end of the second joint, and the other end of the second joint is connected to the sliding assembly through a pin shaft.

[0010] The support assembly further comprises a first support unit for supporting the spring contact finger, wherein the first support unit comprises a support frame, and the spring contact finger is located on the support frame.

[0011] The sliding assembly comprises a guide rod and a sliding block, wherein the guide rod is mounted on the base frame, and the sliding block is slidably disposed on the guide rod and is firmly connected to the supporting frame.

[0012] The support assembly also includes a second support unit for supporting the air cylinder. The second support unit includes a positioning plate and a mounting frame. The air cylinder is fixed to the mounting frame by the positioning plate, and the mounting frame is fixed to the base frame.

[0013] The driving component is a motor.

[0014] Compared with the prior art, the advantages of the utility model are:

[0015] The mechanical characteristic running-in device of the circuit breaker pressure cylinder and the spring contact finger of the utility model can run-in the moving contact part before the product is assembled, thereby reducing the running-in time of the assembly. At the same time, the running-in is in the state of parts, and there is no need to disassemble the equipment. After the running-in, since it is in the state of parts, it is convenient to clean it after the running-in, and it is also easy to observe the running-in effect. The pressure cylinder and the spring contact finger both adopt a copper-silver-plated structure, and the running-in tests the surface quality of the silver-plated layer to improve the surface effect of the silver-coated layer.

[0016] The mechanical characteristic running-in device of the circuit breaker pressure cylinder and spring contact finger of the utility model has a simple structure, and is convenient for disassembling and assembling the pressure cylinder and spring contact finger, and can quickly complete the disassembly and assembly of the running-in parts; the running-in efficiency of the pressure cylinder and the spring contact finger is fast, and the running-in of the pressure cylinder and the spring contact finger can be completed within 10 minutes, which greatly reduces the running-in time and improves production efficiency; because it is a single-piece running-in, there is no need to disassemble and assemble the product as a whole, which also greatly reduces the disassembly and assembly time of the product; single-piece running-in is also convenient for checking and cleaning the parts after running-in, and can efficiently complete the cleaning and inspection of the parts, and it is also easier to find abnormalities after running-in. This set of running-in device does not need to consider the time for the hydraulic mechanism to build pressure, and the pressure cylinder and spring can be run-in before use, which improves production efficiency, and it is easy to disassemble and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view structural diagram of the mechanical property running-in device of the utility model in an embodiment.

[0018] Figure 2 It is a top view of the mechanical property running-in device in an embodiment of the utility model.

[0019] Figure 3 This is one of the embodiment diagrams of the mechanical property running-in device of the utility model in a specific application.

[0020] Figure 4 This is the second embodiment of the mechanical property running-in device of the utility model in a specific application.

[0021] Legend: 1. Support assembly; 101. Base frame; 102. First support unit; 1021. Support frame; 103. Second support unit; 1031. Positioning plate; 1032. Mounting frame; 2. Drive assembly; 201. Motor; 3. Transmission assembly; 301. Crank arm; 302. Connecting rod; 303. First joint; 304. Second joint; 4. Sliding assembly; 401. Guide rod; 402. Sliding block; 5. Air cylinder; 6. Spring contact finger. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] like Figure 1-Figure 2 As shown, the mechanical characteristic running-in device of the circuit breaker pressure cylinder and the spring contact finger of the embodiment of the utility model comprises a driving component 2, a transmission component 3, a sliding component 4 and a supporting component 1; the supporting component 1 comprises a base frame 101, the circuit breaker pressure cylinder 5 to be run-in is installed on the base frame 101, the sliding component 4 is located on the base frame 101, the spring contact finger 6 to be run-in is located on the sliding component 4 and one end is located inside the pressure cylinder 5, the driving component 2 and the transmission component 3 are both located on the base frame 101, the driving component 2 is connected to the sliding component 4 through the transmission component 3, and is used to drive the sliding component 4 to slide via the transmission component 3, thereby driving the spring contact finger 6 on the sliding component 4 to reciprocate inside the pressure cylinder 5 to achieve mechanical characteristic running-in.

[0024] Specifically, the support assembly 1 further includes a first support unit 102 for supporting the spring contact finger 6 and a second support unit 103 for supporting the air cylinder 5; wherein the first support unit 102 includes a support frame 1021, and the spring contact finger 6 is located on the support frame 1021. The second support unit 103 includes a positioning plate 1031 and a mounting frame 1032, and the air cylinder 5 is fixed to the mounting frame 1032 by the positioning plate 1031 to maintain a horizontal state, and the mounting frame 1032 is fixed to the base frame 101. The above-mentioned support units are simple in structure and easy to implement.

[0025] Specifically, the transmission assembly 3 includes a crank arm 301, a connecting rod 302, a first joint 303 and a second joint 304; the crank arm 301 is connected to the first joint 303 by a pin, the pin is fixed by a retaining ring, and the contact surface of the pin is coated with Krupp grease. The first joint 303 and the connecting rod 302 are connected by M16-7H threads, the connecting rod 302 and the second joint 304 are connected by M16-LH-7H threads, and the second joint 304 is connected to the support frame 1021 by a pin. The connecting rod 302 is a retractable connecting rod. When used, the overall length of the connecting rod 302 can be adjusted to ensure the length of the running-in contact surface (the length of the motion trajectory of the spring contact finger 6) to achieve the expected running-in effect.

[0026] Specifically, the sliding assembly 4 includes a guide rod 401 and a slider 402. The guide rod 401 passes through the slider 402, and the slider 402 is fixed on the support frame 1021. A thin layer of Krupp grease is coated on the surface of the guide rod 401 to ensure smooth sliding.

[0027] Specifically, the driving assembly 2 includes a motor 201 with a power of 90W, an operating voltage of AC 220V, and a speed of 21r / min. The motor 201 is fixed to the mounting plate by bolts and connected to the crank arm 301 by a key. The rotation of the motor 201 drives the crank arm 301 to rotate, and drives the transmission assembly 3 to reciprocate.

[0028] The mechanical characteristic running-in device of the circuit breaker pressure cylinder and the spring contact finger of the utility model can run-in the moving contact part before the product is assembled, thereby reducing the running-in time of the assembly. At the same time, the running-in is in the state of parts, and there is no need to disassemble the equipment. After the running-in, since it is in the state of parts, it is convenient to clean it after the running-in, and it is also easy to observe the running-in effect. The pressure cylinder 5 and the spring contact finger 6 both adopt a copper-silver-plated structure, and the running-in tests the surface quality of the silver-plated layer to improve the surface effect of the silver-coated layer.

[0029] In specific use, the centers of the positioning plate 1031, the support ring of the spring contact finger 6 and the support rod are on the same horizontal line, and the center lines of the three are parallel to the center line of the guide rod 401. The guide rod 401 and each pin are coated with Krupp grease to ensure a smooth running-in process.

[0030] like Figure 2 As shown, first remove the pin between the second joint 304 and the support frame 1021, disengage the connecting rod 302 from the support frame 1021, push the connecting rod 302 to the other side, and slide the slider 402 to the right by a sufficient distance. The air cylinder 5 is fixed to the mounting frame 1032 with a positioning plate 1031, and kept horizontal. The two spring contact fingers 6 are respectively installed on the support ring and the support rod. VP980 grease is applied to the inner and outer walls of the air cylinder 5, and VP980 grease is applied to the surfaces of the two spring contact fingers 6.

[0031] like Figure 3-Figure 4 As shown, push the assembled spring contact finger 6 into the pressure cylinder 5, plug and unplug it several times, check whether the separation and connection are smooth, ensure that there is no jamming, and ensure that the grease is evenly distributed. Install the connecting rod 302 on the support frame 1021, fix it with a pin, adjust the length of the connecting rod 302, so that the minimum distance from the end of the support rod to the end of the mounting frame 1032 is 38.5mm, lock the nut of the connecting rod 302, and power on the motor 201 for 200 running-in actions. After the running-in is completed, the motor 201 is powered off, the connecting rod 302 is withdrawn as a whole, the slider 402 is slid to the right a sufficient distance as a whole, the spring contact finger 6 is removed, and the pressure cylinder 5 is removed for cleaning and inspection.

[0032] The mechanical characteristic running-in device of the circuit breaker pressure cylinder and spring contact finger of the utility model has a simple structure, and is convenient for disassembling and assembling the pressure cylinder 5 and the spring contact finger 6, and can quickly complete the disassembly and assembly of the running-in parts; the running-in efficiency of the pressure cylinder 5 and the spring contact finger 6 is fast, and the running-in work of the pressure cylinder 5 and the spring contact finger 6 can be completed within 10 minutes, which greatly reduces the running-in time and improves production efficiency; because it is a single-piece running-in, there is no need to disassemble and assemble the product as a whole, which also greatly reduces the disassembly and assembly time of the product; single-piece running-in is also convenient for checking and cleaning the parts after running-in, and can efficiently complete the cleaning and inspection of the parts, and it is also easier to find abnormalities after running-in. This set of running-in device does not need to consider the time for the hydraulic mechanism to build pressure, and can be run-in before the pressure cylinder 5 and the spring contact finger 6 are used, which improves production efficiency and is easy to disassemble and assemble.

[0033] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.

Claims

1. A mechanical characteristic running-in device for a circuit breaker pressure cylinder and a spring contact finger, characterized in that: The invention comprises a support component (1), a drive component (2), a transmission component (3) and a sliding component (4); the support component (1) comprises a base frame (101); a circuit breaker pressure cylinder (5) to be run-in is mounted on the base frame (101); the sliding component (4) is located on the base frame (101); a spring contact finger (6) to be run-in is located on the sliding component (4) and one end of the spring contact finger (6) is located inside the pressure cylinder (5); the drive component (2) and the transmission component (3) are both located on the base frame (101); the drive component (2) is connected to the sliding component (4) through the transmission component (3) and is used to drive the sliding component (4) to slide via the transmission component (3), thereby driving the spring contact finger (6) on the sliding component (4) to reciprocate inside the pressure cylinder (5).

2. The mechanical characteristic running-in device of the circuit breaker pressure cylinder and the spring contact finger according to claim 1, characterized in that: The transmission assembly (3) comprises a crank arm (301) and a connecting rod (302), one end of the crank arm (301) is connected to the rotating end of the driving assembly (2), the other end of the crank arm (301) is movably connected to one end of the connecting rod (302), and the other end of the connecting rod (302) is movably connected to the sliding assembly (4).

3. The mechanical characteristic running-in device of the circuit breaker pressure cylinder and the spring contact finger according to claim 2, characterized in that: The connecting rod (302) is a telescopic connecting rod.

4. The mechanical characteristic running-in device of the circuit breaker pressure cylinder and the spring contact finger according to claim 2 or 3, characterized in that: The other end of the crank arm (301) is connected to one end of the first joint (303) via a pin, and the other end of the first joint (303) is threadedly connected to one end of the connecting rod (302); the other end of the connecting rod (302) is connected to the sliding component (4) via a second joint (304), and the other end of the connecting rod (302) is threadedly connected to one end of the second joint (304), and the other end of the second joint (304) is connected to the sliding component (4) via a pin.

5. The mechanical characteristic running-in device of the circuit breaker pressure cylinder and the spring contact finger according to claim 1, 2 or 3, characterized in that: The support assembly (1) further comprises a first support unit (102) for supporting the spring contact finger (6); the first support unit (102) comprises a support frame (1021); and the spring contact finger (6) is located on the support frame (1021).

6. The mechanical characteristic running-in device of the circuit breaker pressure cylinder and the spring contact finger according to claim 5, characterized in that: The sliding assembly (4) comprises a guide rod (401) and a sliding block (402); the guide rod (401) is mounted on the base frame (101); the sliding block (402) is slidably mounted on the guide rod (401) and is fixedly connected to the support frame (1021).

7. The mechanical characteristic running-in device of the circuit breaker pressure cylinder and the spring contact finger according to claim 5, characterized in that: The support assembly (1) further comprises a second support unit (103) for supporting the air cylinder (5); the second support unit (103) comprises a positioning plate (1031) and a mounting frame (1032); the air cylinder (5) is fixed to the mounting frame (1032) by the positioning plate (1031), and the mounting frame (1032) is fixed to the base frame (101).

8. The mechanical characteristic running-in device of the circuit breaker pressure cylinder and the spring contact finger according to claim 1, 2 or 3, characterized in that: The driving component (2) is a motor (201).

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