Grounding switch
By designing a grounding switch with a rotary conductive frame and spring sheet, the problem of wear caused by sliding friction contact of existing grounding switches is solved, and a more stable contact area and higher conductivity are achieved, which improves power transmission efficiency and simplifies the replacement process.
Patent Information
- Application Number
- CN202421567148.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-04
AI Technical Summary
The existing grounding switches achieve grounding through sliding friction contacts between the movable contacts and the static contacts, which easily leads to wear, resulting in a decrease in contact area and an increase in contact resistance, which affects the conductivity.
A grounding switch is designed to push the conductive frame to rotate through the closing spring, driving the moving contacts on the spring piece to move to both sides of the static contacts, and pull the limit block through the spring. The limit block contacts the slider through the inclined guide, pushing the moving contacts to stably clamp to the static contacts, reducing the wear of sliding friction contacts.
It reduces wear during sliding friction contact, makes the contact area more stable, improves conductive performance and service life, reduces contact resistance, improves power transmission efficiency, and shortens replacement time by quickly replacing the limit block.
Smart Images
Figure CN222762854U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of grounding switches, in particular to a grounding switch. Background Art
[0002] A grounding switch is an electrical switch device used to ground a circuit. It is usually installed on distribution cabinets, transformers, busbars and other equipment in the power system to ground the circuit during maintenance, overhaul or troubleshooting to ensure the safety of the staff. The existing grounding switch achieves grounding through sliding friction contact between the moving contact and the static contact, which is prone to wear during the sliding friction contact process, resulting in a reduction in contact area and an increase in contact resistance, which affects the conductive performance of the grounding switch. To this end, the utility model proposes a grounding switch. Utility Model Content
[0003] The purpose of the utility model is to propose a grounding switch to address the problem in the background technology that a grounding switch is grounded by sliding friction contact between a moving contact and a stationary contact, which is prone to wear during the sliding friction contact process, thereby resulting in a reduction in contact area, an increase in contact resistance, and affecting the conductive performance of the grounding switch.
[0004] The technical solution of the utility model is as follows: a grounding switch, comprising: a base for support, a plurality of fixing frames fixedly arranged on one side of the base; a plurality of ceramic insulators fixedly mounted on the upper surface of the base, a conductive block fixedly arranged on the upper end of the ceramic insulator, and a static contact fixedly arranged on the bottom surface of one end of the conductive block; a mounting frame arranged on the fixing frame, a connecting rod penetrating between the mounting frames, a conductive frame movably sleeved on the outer wall of the connecting rod, and a conductive rod fixedly penetrating between the conductive frames; a spring sheet fixedly arranged on both sides of the upper end of the conductive frame, a moving contact fixedly arranged on one side of the spring sheet, and the moving contact is located on both sides of the static contact; and a guide component fixedly arranged on the fixing frame for limiting the spring sheet; a closing spring hingedly arranged between the fixing frames, and one end of the closing spring is hingedly connected to the conductive frame.
[0005] Optionally, the guide assembly includes a support frame fixedly mounted on a fixed frame, an outer rod and an inner rod fixedly mounted on opposite surfaces of the support frame, the outer rod and the inner rod are movably socketed, springs are socketed on outer walls of the outer rod and the inner rod, both ends of the spring are fixedly connected to the support frame, a connecting block is fixedly mounted on one side of an upper end of the support frame, a slot is provided on one side of the connecting block, an insert block is slidingly inserted into the interior of the slot, and one end of the insert block is fixedly connected to a limiting block.
[0006] Optionally, a contact slider is fixedly provided on one side of the spring sheet.
[0007] Optionally, the opposing surfaces of the limit block and the contact slider are both inclined and fit each other.
[0008] Optionally, the contact slider is made of insulating material.
[0009] Optionally, the static contact and the moving contact are made of stainless steel.
[0010] Optionally, the slot and the plug are arranged in a "T"-shaped structure.
[0011] Compared with the prior art, the utility model has the following beneficial technical effects:
[0012] The utility model drives the conductive frame to rotate by the closing spring, and the conductive frame drives the moving contact on the spring sheet to move to the two sides of the static contact, and pulls the limit block through the spring to limit the position, and the limit block guides the contact slider to squeeze the limit position through the inclined surface, and the contact slider pushes the moving contact on the spring sheet to stably clamp and tightly adhere to the static contact, which can reduce the wear generated in the sliding friction contact process, make the contact area more stable, thereby improving its conductive performance and service life, reducing contact resistance, and improving power transmission efficiency;
[0013] Furthermore, the utility model cooperates with the contact slider, the slot, the insert block and the limit block for use. When the contact slider and the limit block are worn against each other, the insert block is slid out of the slot to replace the limit block. The limit block can be quickly replaced, which can greatly shorten the replacement time and improve the replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 A schematic diagram of the structure of a grounding switch of the utility model is given;
[0015] Figure 2 For this utility model Figure 1 Schematic diagram of the structure of the conductive frame;
[0016] Figure 3 For this utility model Figure 1 Schematic diagram of the structure of the middle guide component.
[0017] Reference numerals:
[0018] 1. Base; 2. Fixing frame; 3. Ceramic insulator; 4. Conductive block; 5. Static contact; 6. Mounting frame; 7. Connecting rod; 8. Conductive frame; 9. Conductive rod; 10. Spring sheet; 11. Moving contact;
[0019] 12. Guide assembly; 121. Support frame; 122. Outer rod; 123. Inner rod; 124. Spring; 125. Connecting block; 126. Slot; 127. Insert block; 128. Limit block;
[0020] 13. Closing spring; 14. Contact slider. DETAILED DESCRIPTION
[0021] The technical solutions 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 only part of the embodiments of the utility model, rather than 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 are within the scope of protection of the utility model.
[0022] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0025] Example
[0026] like Figure 1 and Figure 2As shown in the figure, a grounding switch proposed by the utility model includes: a base 1 for support, and a plurality of fixing frames 2 are fixedly arranged on one side of the base 1; a plurality of ceramic insulators 3 fixedly installed on the upper surface of the base 1, a conductive block 4 is fixedly arranged at the upper end of the ceramic insulator 3, and a static contact 5 is fixedly arranged at the bottom surface of one end of the conductive block 4; a mounting frame 6 arranged on the fixing frame 2, and the mounting frame 6 is arranged in a "U" shape, a connecting rod 7 is arranged through between the mounting frames 6, and an insulating sleeve is arranged at the penetration of the mounting frame 6 and the connecting rod 7. The outer wall of the connecting rod 7 is movably sleeved with a conductive frame 8, and the conductive frame 8 is located between the mounting frames 6. A conductive rod 9 is fixedly arranged through between the conductive frames 8, which can make a plurality of conductive frames 8 rotate simultaneously; spring pieces 10 are fixedly arranged on both sides of the upper end of the conductive frame 8, a moving contact 11 is fixedly arranged on one side of the spring piece 10, one end of the moving contact 11 penetrates through the spring piece 10, the through groove at the penetration is larger than the diameter of the moving contact 11, and the moving contact 11 is located on both sides of the static contact 5; and a guiding component 12 fixedly arranged on the fixing frame 2 for limiting the spring piece 10; a closing spring 13 is hinged between the fixing frames 2, and one end of the closing spring 13 is hinged with the conductive frame 8, which is convenient for pulling the conductive frame 8 to rotate to realize the closing of the grounding.
[0027] As Figure 1 and Figure 2 shown in the figure, the guiding component 12 includes a support frame 121 fixedly arranged on the fixing frame 2, and the support frame 121 is arranged in a "U" shape. The opposite surfaces of the support frame 121 are fixedly provided with an outer sleeve rod 122 and an inner rod 123. The outer sleeve rod 122 and the inner rod 123 are movably sleeved, which can limit the support frame 121. A spring 124 is sleeved on the outer walls of the outer sleeve rod 122 and the inner rod 123, and both ends of the spring 124 are fixedly connected with the support frame 121, which can pull the support frame 121 to limit it. A connecting block 125 is fixedly arranged on one side of the upper end of the support frame 121, and the connecting block 125 is located on both sides of the opposite side of the spring piece 10. A slot 126 is opened on one side of the connecting block 125, and a plug block 127 is slidably inserted into the slot 126. One end of the plug block 127 is fixedly connected with a limiting block 128, which is convenient for limiting the spring piece 10.
[0028] Furthermore, a contact slider 14 is fixedly arranged on one side of the spring piece 10, and the surface of the contact slider 14 is smooth, which can reduce the friction force and wear when slidingly contacting with the limiting block 128.
[0029] Secondly, the opposite surfaces of the limiting block 128 and the contact slider 14 are both inclined and match with each other, which can reduce wear and improve the service life.
[0030] Moreover, the contact slider 14 is made of insulating material, which can improve the safety of the grounding switch.
[0031] In addition, the static contact 5 and the moving contact 11 are made of stainless steel, which has strong wear resistance, can withstand higher current and voltage, and has a longer service life.
[0032] Finally, the slot 126 and the insert block 127 are arranged in a “T”-shaped structure, which can be stably engaged with each other, making it easy to replace the limit block 128 .
[0033] The working principle of this embodiment is as follows: when wiring, the two ends of the cable are connected to the two ends of the conductive rod 9 respectively, and the other end of the cable is connected to the ground. Then, when closing the switch, the closing spring 13 pushes the conductive frame 8 to rotate on the connecting rod 7, and the connecting rod 7 drives multiple conductive frames 8 to rotate simultaneously through the conductive rod 9, and the conductive frame 8 drives the spring pieces 10 on both sides of the upper end to deflect, and the spring pieces 10 drive the moving contact 11 and the contact slider 14 to rotate simultaneously.
[0034] Furthermore, when the contact slider 14 contacts the inclined surface of the stop block 128 during the rotation process and continues to deflect, the spring sheet 10 generates elastic force to push the contact slider 14 to generate thrust on the stop block 128 during the contact process. The stop block 128 is limited by the outer rod 122, the inner rod 123 and the spring 124 to prevent the stop block 128 from being pushed by the thrust to move. Subsequently, during the deflection process, the contact slider 14 is guided by the inclined surface of the stop block 128, so that the contact slider 14 drives the moving contact 11 on the spring sheet 10 to squeeze and contact closely with each other on the side of the static contact 5, reducing the wear generated during the sliding friction contact process, making the contact area more stable, thereby improving its conductive performance and service life, reducing contact resistance, and improving power transmission efficiency.
[0035] Finally, when the contact slider 14 and the limit block 128 are worn out for a long time and need to be replaced, the insert block 127 is vertically pulled out from the slot 126 and replaced with a new limit block 128. The quick replacement can greatly shorten the replacement time and improve the replacement efficiency.
[0036] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.
Claims
1. A grounding switch, characterized in that: include: A base (1) for supporting, with a plurality of fixing frames (2) fixedly arranged on one side of the base (1); A plurality of ceramic insulators (3) fixedly mounted on the upper surface of the base (1), a conductive block (4) fixedly disposed on the upper end of the ceramic insulator (3), and a static contact (5) fixedly disposed on the bottom surface of one end of the conductive block (4); A mounting frame (6) is arranged on the fixing frame (2), a connecting rod (7) is arranged between the mounting frames (6), a conductive frame (8) is movably sleeved on the outer wall of the connecting rod (7), and a conductive rod (9) is fixedly arranged between the conductive frames (8); A spring sheet (10) is fixedly arranged on both sides of the upper end of the conductive frame (8), a moving contact (11) is fixedly arranged on one side of the spring sheet (10), and the moving contact (11) is located on both sides of the static contact (5); and, a guide assembly (12) fixedly arranged on the fixing frame (2) and used for limiting the position of the spring sheet (10); A closing spring (13) is hingedly arranged between the fixing frames (2), and one end of the closing spring (13) is hingedly connected to the conductive frame (8).
2. A grounding switch according to claim 1, characterized in that: The guide assembly (12) comprises a support frame (121) fixedly arranged on a fixed frame (2); an outer rod (122) and an inner rod (123) are fixedly arranged on opposite surfaces of the support frame (121); the outer rod (122) and the inner rod (123) are movably sleeved; springs (124) are sleeved on the outer walls of the outer rod (122) and the inner rod (123); both ends of the spring (124) are fixedly connected to the support frame (121); a connecting block (125) is fixedly arranged on one side of the upper end of the support frame (121); a slot (126) is provided on one side of the connecting block (125); an insert block (127) is slidably inserted inside the slot (126); one end of the insert block (127) is fixedly connected to a limiting block (128).
3. The grounding switch according to claim 1, characterized in that: A contact slider (14) is fixedly arranged on one side of the spring sheet (10).
4. A grounding switch according to claim 2, characterized in that: The opposing surfaces of the limit block (128) and the contact slider (14) are both inclined and coincide with each other.
5. The grounding switch according to claim 3, characterized in that: The contact slider (14) is made of insulating material.
6. The grounding switch according to claim 1, characterized in that: The static contact (5) and the moving contact (11) are made of stainless steel.
7. The grounding switch according to claim 2, characterized in that: The slot (126) and the insert block (127) are arranged in a "T"-shaped structure.