A manual isolation mechanism with a buffer structure

Abstract

A kind of manual isolation mechanism with buffer structure, including front plate, back plate, ground operating assembly, isolation operating assembly and output shaft, the back plate is provided with the dialing plate on the sleeve and output shaft, the back plate is also provided with the buffer structure for absorbing the rotating impact force of dialing plate after closing, the buffer structure includes the buffer portion for absorbing the impact force of dialing plate after abutting with closing.The dialing plate can abut with buffer portion when closing in place, and the impact energy of dialing plate is absorbed by the elastic deformation of buffer portion, so that the impact force and noise generated at the moment of dialing plate closing are significantly reduced.By the energy-absorbing effect of buffer, the wear of dialing plate, limiting component and connecting shaft is reduced, and the service life and reliability of the whole manual isolation mechanism are prolonged.

Description

Technical Field

[0001] This utility model relates to a manual isolation mechanism with a buffer structure, belonging to the field of isolation mechanisms. Background Technology

[0002] Manual disconnection mechanisms are mechanical devices used to operate the main disconnect switches and grounding switches of power systems. The main types include manual operating mechanisms, compressed air operating mechanisms, hydraulic operating mechanisms, and electric operating mechanisms. All of them are required to have manual operation functions to meet the needs of power outages or debugging.

[0003] However, in traditional mechanisms, the closing impact of the output shaft actuation plate usually relies on metal limits or structural rigidity to withstand it, lacking an effective buffering and absorption device. The absence of a buffer structure to absorb the instantaneous impact force of the actuation plate easily leads to the following problems: long-term impact causes accelerated wear of mechanism components, such as the actuation plate edges, limit blocks, and bearings; the impact force is transmitted to the mechanism plates, easily causing deformation or loosening, affecting the overall lifespan and reliability of the mechanism; under high-frequency operation or heavy-load closing conditions, it may even lead to structural fatigue damage, reducing the operational stability of the equipment. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a manual isolation mechanism with a buffer structure.

[0005] A manual isolation mechanism with a buffer structure includes a front plate, a rear plate, a grounding operating component, an isolation operating component, and an output shaft. The rear plate is provided with a toggle plate sleeved on the output shaft. The rear plate is also provided with a buffer structure for absorbing the rotational impact force of the toggle plate after closing the circuit. The buffer structure includes a buffer part that abuts against the toggle plate after closing the circuit and absorbs its impact force.

[0006] This technical solution allows the actuating plate to contact the buffer section when the circuit is closed. The elastic deformation of the buffer section absorbs the impact energy of the actuating plate, thus significantly reducing the impact force and noise generated at the moment of closing. Through this buffering and energy absorption effect, wear on the actuating plate, limit components, and connecting shaft is reduced, extending the overall service life and reliability of the manual isolation mechanism.

[0007] Preferably, the rear plate is provided with a mounting shaft, one end of the buffer part is rotatably mounted on the mounting shaft, and the other end extends toward the actuating plate. A torsion spring is also sleeved on the mounting shaft, one end of the torsion spring is fixed to the side of the buffer part away from the mounting shaft, and the other end is limited and set on the rear plate.

[0008] Furthermore, a limiting shaft is fixedly provided on the rear plate, the buffer part abuts against the outer wall of the limiting shaft, the limiting shaft is provided with an annular groove, and the torsion spring abuts against the annular groove, so that the torsion spring can drive the buffer part to reset through elastic force.

[0009] This technical solution utilizes a torsion spring that deforms when absorbing the impact of the actuating plate. After the impact, the spring's elastic force pushes the buffer back to its original position, ensuring the buffer mechanism remains in a ready state and improving the reliability of repeated operations. The annular groove provides a limiting constraint on the torsion spring, preventing axial movement or rotational misalignment during stress, thus ensuring the stability of the spring's restoring force direction. The fixed fit between the limiting shaft and the annular groove facilitates installation, enabling rapid assembly and replacement of the torsion spring, simplifying maintenance, and reducing manufacturing and repair costs.

[0010] Furthermore, the buffer section is provided with a limiting hole, and the end of the torsion spring extends into the limiting hole in a bent shape to engage with the buffer section.

[0011] This technical solution uses a locking hole structure to fix the end of the torsion spring, preventing it from loosening or slipping under repeated stress or vibration. The locking method between the locking hole and the bent end simplifies the connection structure, achieving reliable fixation without additional fasteners, thus reducing assembly complexity and manufacturing costs. Rotational misalignment ensures the stability and reliability of the buffer structure.

[0012] Furthermore, the buffer section abuts against the toggle plate after the circuit is closed and then rotates clockwise around the mounting shaft.

[0013] This technical solution allows the buffer to rotate around the mounting shaft after being impacted, converting the impact energy into the elastic deformation energy of the torsion spring, significantly reducing the instantaneous impact force and alleviating the stress concentration on the components.

[0014] The beneficial effects of this utility model are as follows: When the actuating plate is in the closed position, it can abut against the buffer part. The elastic deformation of the buffer part absorbs the impact energy of the actuating plate, thereby significantly reducing the impact force and noise generated by the actuating plate at the moment of closing. Through the buffering energy absorption effect, the wear of the actuating plate, limit components and connecting shaft is reduced, extending the overall service life and reliability of the manual isolation mechanism. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of 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 only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 A magnified view showing the details at point A in the middle; In the diagram, 1 is the front plate; 2 is the rear plate; 3 is the output shaft; 4 is the actuating plate; 5 is the buffer section; 51 is the limiting hole; 6 is the mounting shaft; 7 is the torsion spring; 8 is the limiting shaft; and 81 is the annular groove. Detailed Implementation

[0017] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0018] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0019] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0020] like Figure 1-2 As shown, this is an embodiment of a manual isolation mechanism with a buffer structure according to the present invention. It includes a front plate 1, a rear plate 2, a grounding operating component, an isolation operating component, and an output shaft 3. The rear plate 2 is provided with a toggle plate 4 sleeved on the output shaft 3. The rear plate 2 is also provided with a buffer structure for absorbing the rotational impact force of the toggle plate 4 after closing the circuit. The buffer structure includes a buffer part 5 that abuts against the toggle plate 4 after closing the circuit and absorbs its impact force.

[0021] This technical solution allows the actuating plate 4 to contact the buffer part 5 when the circuit is closed. The elastic deformation of the buffer part 5 absorbs the impact energy of the actuating plate 4, thereby significantly reducing the impact force and noise generated by the actuating plate 4 at the moment of closing. Through the energy absorption effect of buffering, the wear of the actuating plate 4, the limit component, and the connecting shaft is reduced, extending the overall service life and reliability of the manual isolation mechanism.

[0022] The rear plate 2 is provided with a mounting shaft 6. One end of the buffer part 5 is rotatably mounted on the mounting shaft 6, and the other end extends toward the actuating plate 4. A torsion spring 7 is also sleeved on the mounting shaft 6. One end of the torsion spring 7 is fixed to the side of the buffer part 5 away from the mounting shaft 6, and the other end is limited and set on the rear plate 2.

[0023] A limiting shaft 8 is fixedly provided on the rear plate 2. The buffer part 5 abuts against the outer wall of the limiting shaft 8. An annular groove 81 is provided on the limiting shaft 8. The torsion spring 7 abuts against the annular groove 81, so that the torsion spring 7 can drive the buffer part 5 to reset through elastic force.

[0024] Through this technical solution, the torsion spring 7 deforms when absorbing the impact of the actuating plate 4. After the impact, it pushes the buffer part 5 back to its original position through its own elastic force, ensuring that the buffer mechanism always remains in a ready state and improving the reliability of repeated operations. The annular groove 81 limits and constrains the torsion spring 7, preventing axial movement or rotational misalignment of the torsion spring 7 during the force process, thereby ensuring the stability of the return force direction of the torsion spring 7. The fixed fit between the limiting shaft 8 and the annular groove 81 is easy to install, enabling quick assembly and replacement of the torsion spring 7, facilitating maintenance, and reducing manufacturing and maintenance costs.

[0025] The buffer section 5 is provided with a limiting hole 51, and the end of the torsion spring 7 extends in a bent shape into the limiting hole 51 and engages with the buffer section 5. This technical solution uses the limiting hole 51 to fix the end of the torsion spring 7, preventing it from loosening, slipping, or rotating under repeated stress or vibration. The engagement method between the limiting hole 51 and the bent end simplifies the connection structure, achieving reliable fixation without additional fasteners, reducing assembly complexity and manufacturing costs. Rotational misalignment ensures the stability and reliability of the buffer structure.

[0026] The buffer part 5 rotates clockwise around the mounting shaft 6 after it comes into contact with the toggle plate 4 after the circuit is closed. Through this technical solution, the buffer part 5 rotates around the mounting shaft 6 after being impacted, so that the impact energy is converted into the elastic deformation energy of the torsion spring 7, which significantly reduces the instantaneous impact force and reduces the stress concentration on the components.

[0027] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

[0028] Although the present invention has been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed. The present invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A manually operated isolation mechanism with a buffer structure, characterized in that: It includes a front plate, a rear plate, a grounding operating component, an isolation operating component, and an output shaft. The rear plate is provided with a toggle plate sleeved on the output shaft. The rear plate is also provided with a buffer structure for absorbing the rotational impact force of the toggle plate after closing the circuit. The buffer structure includes a buffer part that abuts against the toggle plate after closing the circuit and absorbs its impact force.

2. The manual isolation mechanism with a buffer structure as described in claim 1, characterized in that: The rear plate is provided with a mounting shaft. One end of the buffer part is rotatably mounted on the mounting shaft, and the other end extends toward the actuating plate. A torsion spring is also sleeved on the mounting shaft. One end of the torsion spring is fixed to the side of the buffer part away from the mounting shaft, and the other end is limited and set on the rear plate.

3. The manual isolation mechanism with a buffer structure as described in claim 2, characterized in that: A limiting shaft is fixedly provided on the rear plate. The buffer part abuts against the outer wall of the limiting shaft. An annular groove is provided on the limiting shaft. The torsion spring abuts against the annular groove, so that the torsion spring can drive the buffer part to reset through elastic force.

4. The manual isolation mechanism with a buffer structure as described in claim 2 or 3, characterized in that: The buffer section is provided with a limiting hole, and the end of the torsion spring extends into the limiting hole in a bent shape to engage with the buffer section.

5. The manual isolation mechanism with a buffer structure as described in claim 2, characterized in that: The buffer section abuts against the toggle plate after the circuit is closed and then rotates clockwise around the mounting shaft.

Images