Spring replacement structure for operating mechanism
By designing a spring replacement structure for the operating mechanism and utilizing components such as limit cylinders, limit rods, and handles, the circuit breaker springs can be quickly disassembled and replaced by a single person, solving the problem of cumbersome operation that requires two people in the existing technology and improving efficiency.
Patent Information
- Application Number
- CN202422028005.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-08-21
AI Technical Summary
In existing technologies, replacing circuit breaker springs is a cumbersome operation that requires two people to work together, resulting in low efficiency and unnecessary labor consumption.
A spring replacement structure for an operating mechanism was designed, including components such as an upper limit plate, a lower limit plate, a limit cylinder, a limit rod, and a handle. Through the threaded connection between the limit cylinder and the lower limit plate, the guidance of the limit rod, and the convenient operation of the handle, one person can quickly disassemble and replace the spring.
The spring replacement process can be quickly operated by one person, which improves efficiency, reduces labor occupation and simplifies the operation process.
Smart Images
Figure CN223462134U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to spring replacement device technical field, concretely relates to a spring replacement structure for operating mechanism. BACKGROUND
[0002] The operating mechanism, also known as operating mechanism, is a key component for realizing the on-off operation of electrical equipment in power switching equipment (such as circuit breaker, isolating switch, load switch, etc.). It converts energy (usually electrical energy, hydraulic energy, pneumatic energy or mechanical energy) into mechanical movement required for driving switch operation to complete the connection or disconnection of the circuit.
[0003] Spring operating mechanism: using the energy released by the spring to quickly drive the switch, control the connection and disconnection of the circuit, suitable for occasions requiring fast response.
[0004] 10-35kV circuit breaker is generally a spring operating mechanism, which is widely used in substations due to its fast action speed and strong arc extinguishing ability. The opening and closing speed and time mainly rely on the performance of the spring. However, after a long period of operation (usually ≥8 years), the circuit breaker will gradually have a low opening and closing rate, which does not meet the requirements. At this time, the spring needs to be replaced.
[0005] At present, there is no special tool for replacing the circuit breaker spring. During on-site work, the spring is always stretched and compressed at the disassembly position, so the connected parts are usually removed first, and then the spring can be disassembled. The traditional disassembly method is to fix one end of the spring, and at least two people cooperate, one of whom uses a crowbar to stretch the spring, and then uses a gasket to put into the gap of the stretched spring. The other person uses a conventional wrench to move the stretched spring end to replace the spring. The operation is complicated, inefficient, and occupies unnecessary labor. UTILITY MODEL CONTENTS
[0006] Therefore, the utility model provides a spring replacement structure for operating mechanism, which can realize the quick disassembly and replacement of the spring body by replacing the structure when the spring body fails in elasticity and cannot drive the cam piece to rotate to connect the circuit. One person can operate more conveniently, solving the problem of fixing one end of the spring, at least two people cooperating, one of whom uses a crowbar to stretch the spring, and then uses a gasket to put into the gap of the stretched spring. The other person uses a conventional wrench to move the stretched spring end to replace the spring. The operation is complicated, inefficient, and occupies unnecessary labor.
[0007] To solve the above technical problems, the utility model provides a spring replacement structure for operating mechanism, including elastic structure including upper limit pad, lower limit pad and spring body between upper limit pad and lower limit pad, exert outside force and press spring body, make it compression, the return spring of spring body pushes the rotation of intercommunication cam piece to intercommunication circuit, when the spring body's elastic potential energy is invalid, replacement structure works, for replacing spring body, replacement structure includes the limit cylinder of detachable connection in the outside of lower limit pad, spring body is located in the inside of limit cylinder, is equipped with the through hole of limit cylinder, the positioning pin of through hole is inserted, is equipped with the pin hole of the upper limit pad with through hole adaptation, when needing intercommunication circuit, press upper limit pad to pin hole and through hole coincide, the positioning pin in through hole is inserted into pin hole, when press upper limit pad to pin hole and through hole coincide, the positioning pin in through hole is inserted into pin hole, also can not intercommunication circuit, it is invalid that the spring's elastic body's elastic potential energy, at this moment, it needs to replace spring body, the specific operation is, draw out positioning pin, make spring body restore to natural state, then take off upper limit pad or lower limit pad and take out spring and replace, the utility model discloses can realize the spring body in the elastic performance invalid through replacement structure, not enough to push the cam piece rotation to intercommunication circuit, can realize the quick disassembly and replacement operation of spring body by one person, operation is more convenient, solved the traditional replacement of spring needs to fix one end of spring, at least two people cooperate, one person uses crowbar to stretch spring, then uses gasket and puts into the gap of stretched spring, another person uses conventional wrench to move one end of stretched spring, can replace good spring, operation is tedious, and the problem of low efficiency occupies unnecessary labor.
[0008] The outer side wall of the lower limit pad is provided with an external thread, the lower part of the inner side of the limit cylinder is provided with an internal thread, and the limit cylinder is screw-connected to the lower limit pad.
[0009] A limiting rod is arranged on the axis of the lower limit pad, the upper part of the limiting rod is provided with an external thread, the spring body is sleeved on the limiting rod, guide holes larger than the diameter of the external thread on the limiting rod are arranged on the upper limit pad and the lower limit pad, and a nut is screw-connected to the upper part of the limiting rod.
[0010] The lower part of the nut is provided with a baffle disc, the baffle disc is inserted on the limiting rod, the utility model discloses can through screwing the nut with baffle disc along the limiting rod and slide up and down, and then realize the compression or release of spring body, it is convenient to adjust the elongation of spring, realize the adjustment and release operation of the effective elastic potential of spring body, operation is more convenient.
[0011] The outer side wall of the limiting disc is provided with a handle, the utility model discloses can be convenient for operator to hold and carry out the pressing and rotating operation of the limiting disc through the handle, operation is more convenient and labor-saving.
[0012] The diameter of the baffle disc is greater than the diameter of the limiting cylinder, which is convenient for the operator to hold the handle and press the limiting cylinder upward to abut against the upper part of the limiting cylinder and the lower part of the baffle disc, so that the through hole and the pin hole are coincided, the positioning pin is smoothly inserted into the through hole and the pin hole, the spring body is limitedly compressed, the spring body is conveniently disassembled and replaced, and the operation is more convenient.
[0013] Compared with the prior art, the utility model has at least one of the following beneficial technical effects:
[0014] 1. When the circuit needs to be connected, press the upper limiting disc to make the pin hole coincide with the through hole, and insert the positioning pin in the through hole into the pin hole. When the upper limiting disc is pressed to make the pin hole coincide with the through hole, and the positioning pin in the through hole is inserted into the pin hole, the circuit cannot be connected. It indicates that the elastic potential energy of the spring body has failed. At this time, the spring body needs to be replaced. The specific operation is to pull out the positioning pin, make the spring body return to the natural state, and then remove the upper limiting disc or the lower limiting disc to take out and replace the spring. The utility model can replace the structure to realize the quick disassembly and replacement of the spring body when the elastic performance fails and the cam plate cannot be rotated to connect the circuit. One person can realize the quick disassembly and replacement of the spring body, the operation is more convenient, and the problem of the traditional spring replacement is solved. The spring needs to be fixed at one end and at least two people need to cooperate. One person uses a crowbar to stretch the spring, then uses a gasket to put into the gap of the stretched spring, and the other person uses a regular wrench to move the stretched spring at one end to replace the spring. The operation is complicated, the efficiency is low, and unnecessary labor is occupied.
[0015] 2. The utility model can realize the disassembly of the limiting cylinder through the threaded connection of the limiting cylinder and the lower limiting disc, and the operation is more convenient and efficient.
[0016] 3. The utility model can realize the axial limiting and guiding of the spring body through the limiting rod, avoid the axial swing of the spring body, greatly increase the stability of the axial extension of the spring, and realize the axial limiting and effective protection of the spring body through the limiting cylinder, and the operation is more convenient.
[0017] 4. The utility model can facilitate the operator to grasp the handle to press and rotate the limit plate, which makes the operation more convenient and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of the spring replacement structure for the operating mechanism and the cam piece of the operating mechanism of the utility model;
[0019] Figure 2 A schematic structural diagram of the spring replacement structure of the operating mechanism and the cam piece of the operating mechanism from another perspective of the present invention;
[0020] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.
[0021] Explanation of the accompanying drawings: 100, elastic structure; 101, upper limit plate; 102, lower limit plate; 103, spring body; 104, limit rod; 200, limit cylinder; 300, through hole; 400, positioning pin; 500, pin hole; 600, nut; 700, stop plate; 800, handle. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solutions and advantages of the embodiment of the present invention clearer, the following will be combined with the appended drawings of the embodiment of the present invention. Figures 1-3 , clearly and completely describing the technical solutions of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field fall within the scope of protection of the present invention.
[0023] like Figures 1-3As shown: the embodiment provides a kind of spring replacement structure for operating mechanism, including elastic structure 100 including upper limit disc 101, lower limit disc 102 and spring body 103 between upper limit disc 101 and lower limit disc 102, when the spring body 103 is compressed by pressing, the elastic potential energy of spring body 103 is pushed to rotate to the communication circuit by the elastic force of spring body 103, when the elastic potential energy of spring body 103 is invalid, replacement structure works, for replacing spring body 103, replacement structure includes limit cylinder 200 detachably connected on the outside of lower limit disc 102, spring body 103 is located in the inside of limit cylinder 200, through-hole 300 is set on limit cylinder 200, positioning pin 400 is inserted in through-hole 300, pin hole 500 is set on upper limit disc 101 and matched with through-hole 300, when needing to communicate circuit, press upper limit disc 101 to pin hole 500 and through-hole 300 coincide, positioning pin 400 in through-hole 300 is inserted into pin hole 500, when press upper limit disc 101 to pin hole 500 and through-hole 300 coincide, positioning pin 400 in through-hole 300 is inserted into pin hole 500, when also cannot connect circuit, it indicates that the elastic potential energy of spring body has been invalid, at this time, spring body 103 needs to be replaced, specific operation is, positioning pin 400 is extracted, spring body 103 restores to natural state, then upper limit disc 101 or lower limit disc 102 is removed, and spring is removed and replaced, the utility model can be replaced by replacement structure to realize the elastic performance of spring body 103 in invalid, not enough to push cam piece to rotate to communicate circuit, one person can realize the quick disassembly and replacement operation of spring body 103, operation is more convenient, solve the problem that traditional spring is replaced, and one end of spring is fixed, and the other end is at least two people, wherein one person uses crowbar to stretch spring, then pad is placed in the gap of stretched spring, and another person uses conventional wrench to move the one end of stretched spring, to replace spring, operation is tedious, efficiency is low, and unnecessary labor is occupied.
[0024] According to one embodiment of the utility model, Figures 1-3 As shown, outer thread is set on the outside wall of lower limit disc 102, inner thread is set on the lower part of the inside of limit cylinder 200, limit cylinder 200 is screw-connected on lower limit disc 102, the utility model can realize the disassembly operation of limit cylinder 200 by the screw connection mode of limit cylinder 200 and lower limit disc 102, operation is more convenient and efficient.
[0025] According to another embodiment of the utility model, Figure 1 And Figure 2As shown, the axis of the lower limit disc 102 is provided with a limiting rod 104, the upper part of the limiting rod 104 is provided with an external thread, the spring body 103 is sleeved on the limiting rod 104, the upper limit disc 101 and the lower limit disc 102 are both provided with a guide hole with a diameter larger than that of the external thread on the limiting rod 104, and the upper part of the limiting rod 104 is threadedly connected with a nut 600, so that the axial position of the spring body 103 can be limited and guided by the limiting rod 104, the axial swing of the spring body 103 is avoided, the stability of the axial extension of the spring is greatly increased, and the axial position of the spring body 103 can be effectively limited and protected by the limiting cylinder 200, and the operation is more convenient.
[0026] The lower part of the nut 600 is provided with a baffle disc 700, the baffle disc 700 is inserted on the limiting rod 104, the spring body 103 can be compressed or released by rotating the nut 600 along with the baffle disc 700 on the limiting rod 104, so that the elongation of the spring can be adjusted, the effective elastic potential of the spring body 103 can be adjusted and released, and the operation is more convenient.
[0027] According to another embodiment of the utility model, as shown in Figure 1 and Figure 3 As shown, the outer side wall of the limiting disc is provided with a handle 800, the handle 800 can be conveniently gripped by the operator to press and rotate the limiting disc, and the operation is more convenient and labor-saving.
[0028] The diameter of the baffle disc 700 is larger than that of the limiting cylinder 200, so that the operator can press the limiting cylinder 200 upward to abut against the lower part of the baffle disc 700, the through hole 300 and the pin hole 500 are overlapped, the positioning pin 400 can be smoothly inserted into the through hole 300 and the pin hole 500, the spring body 103 can be limitedly compressed, the spring body 103 can be conveniently disassembled and replaced, and the operation is more convenient.
[0029] The use method of the utility model is as follows:
[0030] First, it needs to be clear that the replacement structure involved in the utility model is mainly used for the replacement operation of the spring, and the utility model takes the switch of the operating mechanism, for example, the controller with the spring, as an example to elaborate the use method in detail, when the circuit needs to be connected, press the upper limit disc 101 to the pin hole 500 and the through hole 300 are coincident, insert the positioning pin 400 in the through hole 300 into the pin hole 500, at this time, the spring is compressed to the limit, the compressed spring will push the lower limit disc 102 downward to extrude the cam piece to rotate the cam piece to connect the circuit under the action of restoring the elasticity of itself, when the upper limit disc 101 is pressed to the pin hole 500 and the through hole 300 are coincident, the positioning pin 400 in the through hole 300 is inserted into the pin hole 500, and the circuit cannot be connected, which indicates that the elastic potential energy of the spring body has failed, at this time, the spring body 103 needs to be replaced, and the specific operation mode has two kinds:
[0031] One is when the upper part of the positioning rod is fixedly connected with the switch, the spring needs to be replaced, the operator holds the handle 800 and pulls out the positioning pin 400, presses the limiting cylinder 200 upward to the lower part of the limiting cylinder 200 and the lower part of the baffle disc 700, and then the through hole 300 and the pin hole 500 are coincident, so that the positioning pin 400 is inserted into the through hole 300 and the pin hole 500, the limit compression of the spring body 103 is realized, then the operator holds the handle 800 and rotates counterclockwise to unscrew the lower limit disc 102 from the limiting cylinder 200, then the spring body 103 can be taken out, the new spring body 103 is inserted into the limiting rod 104, then the guide hole on the lower limit disc 102 is inserted into the limiting rod 104, then the lower limit disc 102 is pressed upward to contact the lower part of the limiting cylinder 200, then the limiting cylinder 200 is rotated clockwise to be screwed with the lower limit disc 102, so that the replacement operation of the spring body 103 is realized, then the circuit needs to be connected, the positioning pin 400 is pulled out, at this time, the compressed spring will push the lower limit disc 102 downward to extrude the cam piece to rotate the cam piece to connect the circuit under the action of the restoring force of itself and the gravity of the limiting cylinder 200 and the lower limit disc 102;
[0032] Secondly, when the upper part of the positioning rod is movably connected with the pressing part of the switch, for example, the positioning rod is inserted in the guide cylinder of the switch, when the spring needs to be replaced, the operator needs to press the baffle plate 700 downward to push the upper limiting disc 101 to compress the spring, until the pin hole 500 on the upper limiting disc 101 coincides with the through hole 300 of the limiting cylinder 200, then the positioning pin 400 is inserted into the through hole 300 and the positioning pin 400 hole, then the operator needs to remove the nut 600, then the baffle plate 700 and the upper limiting disc 101 are removed, the spring can be removed and replaced with a new spring, after the replacement is completed, the positioning pin 400 is extracted, at this time, the compressed spring will be pushed upward by the restoring force of the spring itself, and the upper limiting disc 101 is inserted into the guide cylinder.
[0033] The utility model discloses can realize the quick dismounting and replacement operation of spring body 103 by replacing structure when the spring body 103 is not enough to push the cam piece rotation to the intercommunication circuit in the elasticity performance failure, one person can realize the operation more convenient, the traditional spring replacement needs the fixed spring one end, and the other end at least two people cooperate, one person uses crowbar to stretch the spring, then uses the gasket and inserts into the stretched spring gap, and another person uses the conventional wrench to move the stretched spring one end, can replace the spring, and the operation is complicated, and the efficiency is low, and the unnecessary labor problem is occupied.
[0034] In addition, it also needs to be explained that, in the description of the utility model, unless another explicit provision and limitation, the terms "installation", "connection", "connection" should be understood broadly, for example, can be fixed connection, can be detachable connection, or integrally connected, can be mechanical connection, can be electrical connection, can be directly connected, can be indirectly connected through intermediate medium, can be the communication of two elements inside. For those skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.
[0035] The above is the preferred embodiment of the utility model, and it should be pointed out that, for ordinary skilled person in the prior art, without departing from the principle described in the utility model, a number of improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the utility model.
Claims
1. A spring replacement structure for an operating mechanism, wherein the elastic structure (100) comprises an upper limit plate (101), a lower limit plate (102), and a spring body (103) between the upper limit plate (101) and the lower limit plate (102); when an external force is applied to press the spring body (103) to compress it, the restoring elastic force of the spring body (103) pushes the connecting cam piece to rotate to connect the circuit; when the elastic potential energy of the spring body (103) fails, the replacement structure works and is used to replace the spring body (103), characterized in that; The replacement structure comprises a limiting cylinder (200) detachably connected outside the lower limiting disc (102), the spring body (103) is located inside the limiting cylinder (200), a through hole (300) is formed in the limiting cylinder (200), a positioning pin (400) is inserted in the through hole (300), a pin hole (500) matched with the through hole (300) is formed in the upper limiting disc (101), when the circuit needs to be connected, the upper limiting disc (101) is pressed until the pin hole (500) is coincided with the through hole (300), and the positioning pin (400) in the through hole (300) is inserted into the pin hole (500).
2. The spring replacement structure for an operating mechanism according to claim 1, characterized in that: An outer thread is formed in the outer side wall of the lower limiting disc (102), an inner thread is formed in the lower inner side of the limiting cylinder (200), and the limiting cylinder (200) is threadedly connected to the lower limiting disc (102).
3. The spring replacement structure for an operating mechanism according to claim 2, characterized in that: A limiting rod (104) is arranged on the axis of the lower limiting disc (102), an outer thread is formed in the upper part of the limiting rod (104), the spring body (103) is sleeved on the limiting rod (104), a guide hole larger than the diameter of the outer thread on the limiting rod (104) is formed in the upper limiting disc (101) and the lower limiting disc (102), and a nut (600) is threadedly connected to the upper part of the limiting rod (104).
4. The spring replacement structure for an operating mechanism according to claim 3, wherein: The lower part of the nut (600) is provided with a stop disc (700), and the stop disc (700) is inserted on the limiting rod (104).
5. The spring replacement structure for an operating mechanism according to claim 4, wherein: A handle (800) is arranged on the outer side wall of the limiting disc.
6. The spring replacement structure for an operating mechanism according to claim 5, wherein: The diameter of the stop disc (700) is larger than the diameter of the limiting cylinder (200).