Opening buffer limiting device of operating mechanism of high-voltage switch

Abstract

The utility model discloses an operating mechanism opening buffer limiting device of a high-voltage switch, which comprises a mounting rod, a mounting block, a tension spring, a tension spring scraper blade, a joint and a supporting rod, the mounting block is arranged at one end of the mounting rod, a mounting plate is arranged on the mounting rod and is of an annular structure, one end of the tension spring is fixedly connected onto the mounting plate, and the other end of the tension spring is fixedly connected onto the tension spring scraper blade. The joint is connected to the tension spring scraper; a first movable groove is formed in the mounting block, and the supporting rod is arranged in the first movable groove; a cavity is formed in the mounting block, a through groove communicated with the cavity is formed in the side wall of the first movable groove, the first movable groove is filled with hydraulic oil, a supporting spring is arranged at the bottom of the supporting rod, a baffle is arranged in the first movable groove, and the baffle moves to shield part of the area of the through groove; the supporting force of the supporting rod can be conveniently adjusted.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-voltage equipment, and particularly relates to a tripping buffer limiting device for an operating mechanism of a high-voltage switch. Background Art

[0002] At present, there are many operating mechanisms sold in China for high-voltage switches in the power industry. Among them, the tripping buffer device of the operating mechanism generally only has the functions of tripping and buffering, and the buffering stroke is not adjustable, nor is the tripping spring. Some operating mechanisms are equipped with an adjustable tripping buffer device, but its adjustment method is rather troublesome and generally there is no limiting device. If these operating mechanisms require a limiting function, a limiting device needs to be added to the operating mechanism or the tripping buffer device.

[0003] The utility model patent with the application number CN200920198740.5 discloses a tripping buffer limiting device for an operating mechanism of a high-voltage switch, which is designed for the technical problems of complex buffer and limiting structures and insufficient utilization of the space inside the tension spring in existing similar products. The technical key point is that an independently adjustable buffer and a tension spring threaded joint are arranged inside the tension spring of the device, and the stroke and elastic force of the buffer are smaller than those of the tension spring. That is, the stroke of the buffer is not controlled by the stroke of the tension spring. The stroke of the piston rod inside the buffer is controlled by adjusting the bolt, and the stroke of the tension spring is controlled by the position where the tension spring threaded joint is screwed into the tension spring. This structural design makes full use of the space inside the tension spring, and the buffer, the tension spring threaded joint and the tension spring are independently adjustable respectively. The buffer and the piston rod of this device are convenient to adjust. After being installed on the operating mechanism, the overall mechanical performance has good stability and safety, and it is applicable to the buffering and limiting during the tripping of the operating mechanism in high-voltage switches, and the improvement of its similar operating mechanisms and tension spring devices.

[0004] The above patent realizes the buffering and limiting of the operating mechanism. However, as a component, the operating mechanism needs to be installed in various occasions, and the supporting force of the corresponding piston rod needs to be adjusted according to different application occasions. The adjustment of the supporting force of the piston rod in this patent is not convenient enough. Content of the Utility Model

[0005] This part of the content of this application is used to briefly introduce the concepts, which will be described in detail in the following detailed implementation part. This part of the content of this application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a tripping buffer limiting device for an operating mechanism of a high-voltage switch.

[0007] To achieve the above object, the utility model adopts the following technical solutions: A closing buffer limiting device for the operating mechanism of a high-voltage switch, comprising a mounting rod, a mounting block, a tension spring, a tension spring scraper, a joint and a support rod. The mounting block is arranged at one end of the mounting rod. An installation plate is provided on the mounting rod. The installation plate is of an annular structure. One end of the tension spring is fixedly connected to the installation plate, and the other end of the tension spring is fixedly connected to the tension spring scraper. The joint is connected to the tension spring scraper. A first moving groove is provided on the mounting block, and the support rod is arranged in the first moving groove. A cavity is provided on the mounting block, and a through groove communicating with the cavity is provided on the side wall of the first moving groove. The first moving groove is filled with hydraulic oil. A support spring is provided at the bottom of the support rod, and a baffle is provided in the first moving groove. The baffle moves to cover a part of the area of the through groove.

[0008] Further, a rotating ring is provided in the first moving groove. A first connecting rod is provided on the rotating ring. The baffle is fixedly connected to one end of the first connecting rod. The baffle is of an arc-shaped structure.

[0009] Further, a guide block is provided on the rotating ring, and a guide groove for the guide block to move is provided at the bottom of the first moving groove. The guide groove is of a circular arc structure.

[0010] Further, a moving cavity is provided at the bottom of the guide groove. A turntable is provided in the moving cavity. The guide block is connected to the turntable. A through cavity is provided at the bottom of the moving cavity. A rotating shaft is provided on the turntable, and the rotating shaft passes through the through cavity.

[0011] Further, a connecting groove is provided at one end of the rotating shaft. A connecting shaft is provided in the connecting groove. The connecting shaft is connected to a second connecting rod, and a circular handle is provided on the second connecting rod.

[0012] Further, a limiting groove corresponding to the circular handle is provided at the bottom end of the mounting rod. A plurality of convex teeth are provided on the inner wall of the limiting groove, and a plurality of grooves corresponding to the convex teeth are provided on the side wall of the circular handle.

[0013] Further, an adjusting nut is provided at the bottom of the mounting plate, and a thread corresponding to the adjusting nut is provided on the mounting rod.

[0014] Further, a rotation stopping groove is provided on the mounting rod, and a first convex block corresponding to the rotation stopping groove is provided on the inner wall of the mounting plate.

[0015] Further, a second moving groove is provided on the adjusting nut. A push rod passes through the second moving groove. A second convex block is provided on the push rod. An annular groove corresponding to the second convex block is provided at the bottom of the mounting plate. A plurality of positioning grooves are provided on the side wall of the annular groove. A return spring is provided at one end of the push rod, and a push block is provided at the other end.

[0016] Further, a buffer pad is provided on the support rod. The buffer pad is made of an elastic material.

[0017] The beneficial effect of the utility model is: to provide a closing buffer limiting device for the operating mechanism of a high-voltage switch, which is convenient for adjusting the supporting force of the support rod. Brief Description of the Drawings

[0018] The drawings forming a part of this application are used to provide a further understanding of this application, making other features, objectives, and advantages of this application more obvious. The schematic embodiments of the drawings of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application.

[0019] In addition, throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic and the elements and components are not necessarily drawn to scale.

[0020] In the drawings:

[0021] Figure 1 It is a schematic structural diagram of the opening buffer and limit device of the operating mechanism of a high-voltage switch in an embodiment of the present utility model.

[0022] Figure 2 is Figure 1 A sectional view of the mounting rod of the opening buffer and limit device of the operating mechanism of the high-voltage switch in the shown embodiment.

[0023] Figure 3 is Figure 2 An enlarged view of part A in

[0024] Figure 4 is Figure 2 An enlarged view of part B in

[0025] Figure 5 is Figure 2 An enlarged view of part C in

[0026] Figure 6 is Figure 1 A sectional view of the guide groove of the opening buffer and limit device of the operating mechanism of the high-voltage switch in the shown embodiment.

[0027] Figure 7 is Figure 6 An enlarged view of part D in

[0028] Figure 8 is Figure 1 A bottom view of the mounting plate of the opening buffer and limit device of the operating mechanism of the high-voltage switch in the shown embodiment.

[0029] Figure 9 is Figure 8 An enlarged view of part E in

[0030] The meanings of the reference numerals in the drawings are as follows:

[0031] 101. Installation rod; 1011. Anti-rotation groove; 102. Fixed plate; 103. Mounting plate; 1031. Ring groove; 1032. Positioning groove; 1033. First convex block; 104. Tension spring; 105. Tension spring scraper; 106. Connector; 107. Fixed nut; 108. Mounting block; 1081. First movable groove; 1082. Cavity; 1083. Through groove; 109. Support rod; 110. Rotating shaft; 1101. Turntable; 111. Support spring; 112. Rotating ring; 1121. Guide block; 113. First connecting rod; 114. Baffle; 115. Push rod; 1151. Second convex block; 1152. Return spring; 116. Adjusting nut; 117. Connecting shaft; 118. Second connecting rod; 119. Ring-shaped handle. Detailed implementation mode

[0032] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0033] In addition, it should be noted that for the sake of convenience of description, only the parts related to the utility model are shown in the drawings. Without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0034] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependent relationships.

[0035] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly specified in the context, it should be understood as "one or more".

[0036] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only for illustrative purposes and are not used to limit the scope of these messages or information.

[0037] The present disclosure will be described in detail below with reference to the drawings and in combination with the embodiments.

[0038] As Figures 1-9As shown in the figure, a closing buffer limiting device for the operating mechanism of a high-voltage switch includes a mounting rod 101, a mounting block 108, a tension spring 104, a tension spring scraper 105, a joint 106, and a support rod 109. The mounting rod 101 is connected to a fixed plate 102, and the mounting rod 101 is fixed by screwing a fixing nut 107 onto the mounting rod 101. The mounting block 108 is provided at one end of the mounting rod 101. There is a mounting plate 103 on the mounting rod 101. The mounting plate 103 is of a ring structure and can move along the mounting rod 101. One end of the tension spring 104 is fixedly connected to the mounting plate 103, and the other end of the tension spring 104 is fixedly connected to the tension spring scraper 105. The joint 106 is connected to the tension spring scraper 105. There is a first moving groove 1081 on the mounting block 108, and the support rod 109 is provided in the first moving groove 1081. There is a cavity 1082 in the mounting block 108. A through groove 1083 communicating with the cavity 1082 is provided on the side wall of the first moving groove 1081. The first moving groove 1081 is filled with hydraulic oil. A support spring 111 is provided at the bottom of the support rod 109. A baffle 114 is provided in the first moving groove 1081, and the baffle 114 moves to cover a part of the area of the through groove 1083.

[0039] A rotating ring 112 is provided in the first moving groove 1081. A first connecting rod 113 is provided on the rotating ring 112. One end of the first connecting rod 113 is fixedly connected to the baffle 114. The baffle 114 is of an arc structure. A guide block 1121 is provided on the rotating ring 112. A guide groove for the guide block 1121 to move is provided at the bottom of the first moving groove 1081. The guide groove is of a circular arc structure.

[0040] There is a moving cavity at the bottom of the guide groove. A turntable 1101 is provided in the moving cavity. The guide block 1121 is connected to the turntable 1101. There is a through cavity at the bottom of the moving cavity. A rotating shaft 110 is provided on the turntable 1101. The rotating shaft 110 passes through the through cavity. A connecting groove is provided at one end of the rotating shaft 110. A connecting shaft 117 is provided in the connecting groove. The connecting shaft 117 can rotate in the connecting groove and cannot escape from the connecting groove. The connecting shaft 117 is in anti-rotation cooperation with the connecting groove. The connecting shaft 117 is connected to a second connecting rod 118. A ring-shaped handle 119 is provided on the second connecting rod 118. The second connecting rod 118 is of a hollow structure. A limiting groove corresponding to the ring-shaped handle 119 is provided at the bottom end of the mounting rod 101. A plurality of convex teeth are provided on the inner wall of the limiting groove. A plurality of grooves corresponding to the convex teeth are provided on the side wall of the ring-shaped handle 119.

[0041] The bottom of the mounting plate 103 is provided with adjusting nuts, and the mounting rod 101 is provided with threads corresponding to the adjusting nuts; the mounting rod 101 is provided with an anti-rotation groove 1011, and the inner wall of the mounting plate 103 is provided with a first convex block 1033 corresponding to the anti-rotation groove 1011; the adjusting nut is provided with a second moving groove, a push rod 115 is inserted into the second moving groove, the push rod 115 is provided with a second convex block 1151, and the bottom of the mounting plate 103 is provided with an annular groove 1031 corresponding to the second convex block 1151, and a plurality of positioning grooves 1032 are provided on the side wall of the annular groove 1031; one end of the push rod 115 is provided with a return spring 1152, and the other end is provided with a push block.

[0042] The support rod 109 is provided with a buffer pad made of rubber to buffer the tension spring scraper 105 hitting the support rod 109.

[0043] When the joint 106 is normally connected, the tension spring 104 is stretched and elongated, and the tension spring scraper 105 is above the support rod 109 and does not contact the support rod 109. Because the stroke of the tension spring 104 is greater than the stroke of the support spring 111, the support rod 109 can be fully extended until the support rod 109 is in place under the elastic force of the support spring 111. Finally, the support rod 109 is in a separated state from the hanging plate of the tension spring 104. At this time, the operating mechanism is in the closing state. Since the support rod 109 is not required in the closing state, the support rod 109 does not affect the operation of the operating mechanism during this process.

[0044] When the operating mechanism is tripped, the tension spring 104 releases energy and contracts, and the hanging plate of the tension spring 104 moves downward. At the beginning, the hanging plate of the tension spring 104 still does not contact the support rod 109, and all the energy of the tension spring 104 is used for tripping without affecting the tripping movement. However, when the tension spring 104 moves to a certain section, the operating mechanism has been tripped but has not reached the predetermined position. At this time, the tension spring 104 still has a part of elastic energy and inertial energy and has a certain moving speed, and this energy will have an adverse impact on the tripping of the operating mechanism. The smooth plate of the tension spring 104 hits the support rod 109, and the support rod 109 moves into the first moving groove 1081 and pushes the hydraulic oil in the first moving groove 1081 into the cavity 1082, using the hydraulic oil and the support spring 111 to provide a buffering effect for the movement of the support rod 109. At the same time, the support rod 109 provides a buffering and limiting effect for the tension spring scraper 105, absorbing the elastic energy and inertial energy of the tension spring 104 to achieve the smooth landing of the tension spring scraper 105.

[0045] When adjusting the elongation of the tension spring 104, the push block is squeezed. The push block pushes the push rod 115 to move into the second moving slot. The second bump 1151 moves from the positioning slot 1032 into the annular slot 1031. The adjusting nut is rotated. The second bump 1151 moves in the annular slot 1031. The rotation of the adjusting nut adjusts the position of the mounting plate 103, so as to control the elongation of the tension spring 104. After the tension spring 104 is adjusted, the push block is released. The return spring 1152 pushes the push rod 115 to move. The second bump 1151 enters the positioning slot 1032, making the adjusting nut unable to rotate, and fixing the mounting plate 103.

[0046] When adjusting the supporting force of the support rod 109, the annular handle 119 is taken out from the limiting slot. The hollow structure of the second connecting rod 118 enables the annular handle 119 to be conveniently removed from the limiting slot. The annular handle 119 is rotated. The annular handle 119 drives the rotating shaft 110 to rotate. The rotating ring 112 rotates, causing the baffle 114 to move in the first moving slot 1081. The baffle 114 shields a part of the area of the through slot 1083, adjusting the resistance of the hydraulic oil flowing from the first moving slot 1081 into the cavity 1082, so as to adjust the supporting force of the support rod 109 to meet the installation requirements of different scenarios. After the position of the baffle 114 is adjusted, the annular handle 119 is pushed into the limiting slot to fix the annular handle 119, completing the adjustment of the support rod 109.

[0047] The above description is only some preferred embodiments of the present disclosure and the description of the applied technical principles. Those skilled in the art should understand that the scope of the utility model involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A buffer limit device for the opening of an operating mechanism of a high-voltage switch, comprising a mounting rod, a mounting block, a tension spring, a tension spring scraper, a joint and a support rod, wherein the mounting block is arranged at one end of the mounting rod, the mounting rod is provided with a mounting plate, the mounting plate is an annular structure, one end of the tension spring is fixedly connected to the mounting plate, the other end of the tension spring is fixedly connected to the tension spring scraper, and the joint is connected to the tension spring scraper; the mounting block is provided with a first movable groove, and the support rod is arranged in the first movable groove; characterized in that: A cavity is provided on the mounting block, a through groove communicating with the cavity is provided on the side wall of the first movable groove, the first movable groove is filled with hydraulic oil, a supporting spring is provided at the bottom of the support rod, a baffle is provided in the first movable groove, and the baffle moves to cover part of the area of ​​the through groove.

2. The opening buffer limit device of the operating mechanism of the high-voltage switch according to claim 1 is characterized in that: A rotating ring is arranged in the first movable groove, a first connecting rod is arranged on the rotating ring, the baffle is fixedly connected to one end of the first connecting rod, and the baffle is an arc-shaped structure.

3. The opening buffer limit device of the operating mechanism of the high-voltage switch according to claim 2 is characterized in that: A guide block is arranged on the rotating ring, and a guide groove for the guide block to move is arranged at the bottom of the first movable groove, and the guide groove is an arc-shaped structure.

4. The opening buffer limit device of the operating mechanism of the high-voltage switch according to claim 3 is characterized in that: A movable cavity is provided at the bottom of the guide groove, a rotating disk is provided in the movable cavity, and the guide block is connected to the rotating disk; a through cavity is provided at the bottom of the movable cavity, a rotating shaft is provided on the rotating disk, and the rotating shaft passes through the through cavity.

5. The opening buffer limit device of the operating mechanism of the high-voltage switch according to claim 4 is characterized in that: A connecting groove is provided at one end of the rotating shaft, a connecting shaft is provided in the connecting groove, the connecting shaft is connected to a second connecting rod, and an annular handle is provided on the second connecting rod.

6. The opening buffer limit device of the operating mechanism of the high-voltage switch according to claim 5 is characterized in that: A limiting groove corresponding to the annular handle is provided at the bottom end of the mounting rod, a plurality of convex teeth are provided on the inner wall of the limiting groove, and a plurality of grooves corresponding to the convex teeth are provided on the side wall of the annular handle.

7. The opening buffer limit device of the operating mechanism of the high-voltage switch according to claim 1 is characterized in that: An adjusting nut is arranged at the bottom of the mounting plate, and a thread corresponding to the adjusting nut is arranged on the mounting rod.

8. The opening buffer limit device of the operating mechanism of the high-voltage switch according to claim 7 is characterized in that: The mounting rod is provided with a rotation-stopping groove, and the inner wall of the mounting plate is provided with a first protrusion corresponding to the rotation-stopping groove.

9. The opening buffer limit device of the operating mechanism of the high-voltage switch according to claim 8, characterized in that: The adjusting nut is provided with a second movable groove, a push rod is passed through the second movable groove, a second protrusion is provided on the push rod, an annular groove corresponding to the second protrusion is provided at the bottom of the mounting plate, and a plurality of positioning grooves are provided on the side wall of the annular groove; a return spring is provided at one end of the push rod, and a push block is provided at the other end.

10. The opening buffer limit device of the operating mechanism of the high-voltage switch according to claim 1, characterized in that: The support rod is provided with a buffer pad, and the buffer pad is made of elastic material.

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