Buffer limiting structure of isolating switch
By installing a buffer pad between the isolation tool and using the contact between the isolation contact and the extension end to absorb impact force, the problem of complex and high cost of static contact installation when the isolation switch is closed is solved, and the effect of simplifying the structure and reducing costs is achieved.
Patent Information
- Application Number
- CN202421535516.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-01
AI Technical Summary
When the isolating switch is closed, the buffering and limiting components of the static contacts are complex, which increases the cost.
A buffer limit structure of the isolating switch is designed. The structure of the static contact is simplified by installing a buffer pad between the isolation tool and using the contact between the isolation contact and the extension end to absorb the impact force during closing.
The processing process of static contacts is simplified, the cost is reduced, and the damage of the isolation knife is effectively avoided and the limiting effect is ensured.
Smart Images
Figure CN222762864U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a buffer limit structure of an isolating switch. Background Art
[0002] An isolation shaft is a mechanical component that is primarily used to transmit rotational motion or torque. It can be used in different mechanical systems to connect and transmit power, and may provide a certain degree of motion or load isolation. An isolation shaft may contain bearings to reduce friction and allow smooth rotational motion, while an isolating switch is an electrical device used to provide a safe disconnection point in a circuit. Its main function is to cut off the power supply during maintenance or overhaul to ensure that the circuit is in a safe disconnected state. Isolating switches are usually designed with a clearly visible disconnection point to prove that the circuit has been isolated. In electrical systems, isolation shafts can be used in conjunction with isolating switches to drive the blades (isolation knives) of the isolating switch to perform opening and closing operations.
[0003] However, when the disconnector is closed, the static contact has buffering and limiting components, refer to Figure 5 , a buffer pad, a steel plate, and a plurality of holes are opened on the back of the steel plate. In the actual installation process, not only the steel plate needs to be processed, but also additional screws are required to fix the buffer pad, thus increasing a certain cost. Utility Model Content
[0004] The utility model provides a buffer limit structure of an isolating switch, which can effectively solve the above problems.
[0005] The utility model is achieved in this way:
[0006] A buffer limit structure of an isolating switch, comprising an isolating rotating shaft and an upper isolating bracket, the two cooperate to close the switch;
[0007] A second isolation component is arranged on the upper isolation bracket at equal intervals; the second isolation component comprises a copper column, an isolation contact is arranged at one end of the copper column, and an extension end is arranged at one end of the isolation contact;
[0008] A first isolation component is arranged on the isolation shaft at equal intervals; the first isolation component comprises a protrusion, one end of the protrusion is provided with symmetrical isolation knives, and an isolation pad is provided between the two isolation knives;
[0009] When the switch is closed, the extended end of one end of the isolation contact contacts the isolation pad arranged between the isolation blades, and the isolation pad absorbs the impact force during the closing of the switch to avoid damage to the isolation blade.
[0010] As a further improvement, a flat head nut is passed through between the two isolation knives, a compression spring is sleeved on the outer wall of the flat head nut, and pressure caps are provided at both ends of the flat head nut.
[0011] As a further improvement, a lock hole is formed on the outer wall of the other end of the copper column for locking and fixing with the upper isolation bracket.
[0012] As a further improvement, the isolation pad is made of rubber, PU or PVC.
[0013] As a further improvement, the extension end has a length L, wherein 3cm≤L≤5cm.
[0014] As a further improvement, an inclined surface is formed between the isolating contact and the extending end, and the inclined surface is used for making way.
[0015] The beneficial effects of the utility model are:
[0016] (1) This case simplifies the stationary contact and abandons the original structure of installing the buffer pad on the stationary contact, so that the stationary contact only plays a partition role. At the same time, the buffer pad (isolation pad) is installed between the isolation knives, and the stationary contact contacts the buffer pad to reduce the mechanical stress of the stationary contact. Although it plays the same limiting role as the original stationary contact, this case simplifies the processing procedures of the stationary contact and reduces a certain cost, which is worthy of promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 It is the front view of the utility model.
[0019] Figure 2 It is a structural schematic diagram of the first isolation component of the utility model.
[0020] Figure 3 It is a side view of the utility model.
[0021] Figure 4 It is a structural schematic diagram of the second isolation component of the utility model.
[0022] Figure 5 It is a comparative structural schematic diagram of the second isolation component of the utility model.
[0023] Description of Figure Numbers:
[0024] 1. Isolation shaft; 2. Upper isolation bracket;
[0025] 3. First isolation component; 30. Protrusion; 31. Isolation knife; 32. Pressure cap; 33. Flat nut; 34. Compression spring; 35. Isolation pad;
[0026] 4. Second isolation component; 40. Copper pillar; 41. Keyhole; 42. Isolation contact; 43. Extension end;
[0027] 50. Copper column A; 51. Extension section; 52. Static contact; 53. Steel plate; 54. Buffer pad. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.
[0029] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot 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 invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0030] Reference Figure 1-4 As shown, a buffer limit structure of an isolating switch includes an isolating rotating shaft 1 and an upper isolating bracket 2, which cooperate with each other to perform closing.
[0031] The second isolation component 4 is arranged on the upper isolation bracket 2 at equal intervals; the second isolation component 4 includes a copper column 40, one end of which is provided with an isolation contact 42, and one end of the isolation contact 42 is provided with an extension end 43; the outer wall of the other end of the copper column 40 is formed with a lock hole 4 for locking and fixing with the upper isolation bracket 2.
[0032] Further, the extension end 43 has a length L, wherein 3cm≤L≤5cm. In one embodiment, preferably, 3cm≤L≤4.5cm. More preferably, 3cm≤L≤4cm. Further, in one embodiment, in order to ensure that the extension end 43 can better contact with the isolation pad 35 and does not touch other components, preferably, L is about 3.5cm. It should be noted that the length of the extension end 43 must be consistent with the length of the isolation pad 35, so as to ensure that the extension end 43 is completely in contact with the isolation pad 35 and does not touch the isolation knife 31.
[0033] Furthermore, an inclined surface is formed between the isolation contact 42 and the extension end 43, and the inclined surface is used for making way.
[0034] Comparative Example:
[0035] Reference Figure 5 The original second isolation component 4 is composed of a copper column A50, an extension section 51, a static contact 52, a steel plate 53 and a buffer pad 54. The buffer pad 54 is arranged between the static contact 52 and the steel plate 53. The extension section 51 is connected to the steel plate 53 and combined with the copper column A50, thereby forming a second isolation component 4. Among them, the structure of the comparative example is different from that of the present case in that the structure is provided with a buffer pad 54, an extension section 51 and a steel plate 53. Compared with the present case, the extra structure increases the materials required for processing and increases the cost. Moreover, when installing the buffer pad 54, it is necessary to drill holes on the back of the steel plate 53 so as to fix the buffer pad 54 by screws or other components. This not only increases the processing steps, but also adds additional fixing components, resulting in an increase in the cost of the product.
[0036] Furthermore, in this case, the buffer pad 54 (isolation pad 35) is arranged between the isolation knives 31 to simplify the structure and processing procedures of the second isolation component 4, which can not only play the same role, but also achieve the effect of reducing costs, which is conducive to promoting use.
[0037] The first isolation component 3 is arranged on the isolation shaft 1 at equal intervals. The first isolation component 3 includes a protrusion 30 , one end of which is provided with symmetrical isolation knives 31 , and an isolation pad 35 is provided between the two isolation knives 31 .
[0038] Further, the isolation pad 35 is made of rubber, PU or PVC. In one embodiment, the isolation pad 35 is made of rubber. Of course, the choice of material can be set according to actual needs, and this case does not make too many restrictions here.
[0039] A flat nut 33 is passed through between the two isolating knives 31 . A compression spring 34 is sleeved on the outer wall of the flat nut 33 . Pressure caps 32 are provided at both ends of the flat nut 33 .
[0040] Among them, the compression spring 34 provides elastic support, which can absorb the impact and vibration during the operation of the isolation knife 31, reduce the mechanical stress on the isolation knife 31 and the isolation contact 42 and the extension end 43, and due to the elastic effect of the compression spring 34, the isolation pad 35 can automatically adjust the contact pressure with the static contact (isolation contact 42 and extension end 43) to ensure the stability and consistency of the contact.
[0041] Furthermore, the fixing method of the flat head nut 33 and the compression spring 34 simplifies the installation and fixing of the isolation pad 35, and facilitates quick installation and maintenance.
[0042] The working principle of this utility model:
[0043] When closing the circuit breaker, the extended end 43 at one end of the isolating contact 42 contacts the isolating pad 35 arranged between the isolating blades 31, and the isolating pad 35 absorbs the impact force during closing the circuit breaker to avoid damage to the isolating blade 31, thereby playing a certain limiting effect. Furthermore, this case also simplifies the structure of the isolating contact 42 (static contact) and saves costs.
[0044] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A buffer limit structure of an isolating switch, characterized in that: include The isolation shaft (1) and the upper isolation bracket (2) cooperate with each other to close the circuit breaker; A second isolation component (4) is arranged on the upper isolation bracket (2) at equal intervals; the second isolation component (4) comprises a copper column (40), one end of the copper column (40) is provided with an isolation contact (42), and one end of the isolation contact (42) is provided with an extension end (43); A first isolation component (3) is arranged on the isolation shaft (1) at equal intervals; the first isolation component (3) comprises a protrusion (30), one end of the protrusion (30) is provided with symmetrical isolation knives (31), and an isolation pad (35) is provided between the two isolation knives (31); When the switch is closed, the extended end (43) at one end of the isolation contact (42) contacts the isolation pad (35) arranged between the isolation blades (31), and the isolation pad (35) absorbs the impact force during the closing of the switch, thereby preventing the isolation blade (31) from being damaged.
2. The buffer limit structure of the isolating switch according to claim 1, characterized in that: A flat nut (33) passes through the two isolation knives (31), a compression spring (34) is sleeved on the outer wall of the flat nut (33), and pressure caps (32) are arranged at both ends of the flat nut (33).
3. The buffer limit structure of the isolating switch according to claim 1, characterized in that: A locking hole (41) for locking and fixing with the upper isolation bracket (2) is formed on the outer wall of the other end of the copper column (40).
4. The buffer limit structure of the isolating switch according to claim 1, characterized in that: The isolation pad (35) is made of rubber, PU or PVC.
5. The buffer limit structure of the isolating switch according to claim 1, characterized in that: The extension end (43) has a length L, wherein 3cm≤L≤5cm.
6. The buffer limit structure of the isolating switch according to claim 1, characterized in that: An inclined surface is also formed between the isolation contact (42) and the extension end (43), and the inclined surface is used for making way.