Switch travel monitoring device and travel switch

Abstract

The utility model belongs to the technical field of circuit breakers, and discloses a switch travel monitoring device and a travel switch, comprising a boss plate which is provided with a first boss group and a second boss group; a plurality of bosses with different stroke lengths are arranged in the first boss group and the second boss group; the bosses of the first boss group and the bosses of the second boss group face opposite directions; and the positions of the table surfaces of the first boss group and the second boss group are matched with the positions of rollers of a microswitch. Through the design of the boss of the boss plate and the matching of the boss and the microswitch, the problems that in the prior art, a cam assembly is inconvenient to machine and install, the stroke is difficult to accurately correspond to the pressure, and the overall structure of equipment is complex can be solved.

Description

A switch travel monitoring device and a travel switch Technical Field

[0001] This utility model belongs to the field of circuit breaker technology, specifically relating to a switch travel monitoring device and a travel switch. Background Technology

[0002] In circuit breakers, the travel of the energy storage spring in the hydraulic spring operating mechanism corresponds one-to-one with the working pressure of the hydraulic mechanism. Typically, the working pressure is monitored using a spring travel switch. As shown in Figures 1 and 2, existing hydraulic spring operating mechanisms use a rack and pinion mechanism to drive a group of differently opened cam plates mounted on a rotating shaft. The switch switches at different travel points of the energy storage spring to detect the travel. This structure presents challenges in manufacturing and installation. Furthermore, the existing travel switch structure is complex and has numerous components, leading to reduced equipment reliability and increased maintenance costs.

[0003] Chinese patent publication number CN106298304A, entitled "A Hydraulic Spring Operating Mechanism and Its Limit Switch Assembly," describes a limit switch assembly comprising a mounting bracket for mounting a corresponding monitoring switch. A one-piece cam, driven by a disc spring of the hydraulic spring operating mechanism via a transmission mechanism, is rotatably mounted on the mounting bracket. The one-piece cam includes multiple cam plates corresponding to the trigger ends of the monitoring switches. The extension direction of the rotation center axis of the one-piece cam is defined as the left-right direction, and the multiple cam plates are spaced apart along the left-right direction. This patent application fails to address the problems of inconvenient processing and installation of cam assemblies, difficulty in accurately corresponding pressure control strokes, and the complex overall structure of the equipment in existing technologies. Summary of the Invention

[0004] In order to overcome the problems existing in the prior art, the purpose of this utility model is to provide a switch stroke monitoring device and a limit switch. Through the boss design of the boss plate, the boss cooperates with the micro switch to solve the problems of inconvenient processing and installation of cam assembly, difficulty in accurately corresponding pressure control stroke and complex overall structure of equipment in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] In a first aspect, this utility model provides a switch travel monitoring device, including a boss plate, the boss plate having a first boss group and a second boss group; both the first boss group and the second boss group have several bosses with different travel lengths; the bosses of the first boss group and the bosses of the second boss group have opposite table surfaces; the table surface positions of the first boss group and the second boss group are matched with the roller position of the micro switch.

[0007] Optionally, the first boss group includes a rated pressure control boss, a reclosing alarm pressure control boss, a closing pressure alarm control boss, and a tripping pressure alarm control boss; the second boss group includes a reclosing interlocking pressure control boss, a tripping interlocking pressure control boss, and a closing interlocking pressure control boss.

[0008] Optionally, the stroke lengths of the rated pressure control boss, the reclosing alarm pressure control boss, the closing pressure alarm control boss, and the opening pressure alarm control boss increase sequentially; the stroke lengths of the reclosing lockout pressure control boss, the opening lockout pressure control boss, and the closing lockout pressure control boss also increase sequentially.

[0009] Optionally, the bosses of the first boss group and the bosses of the second boss group have the same height.

[0010] Optionally, the boss plate is provided with a single protruding block, and the first boss group and the second boss group are respectively provided on both sides of the protruding block.

[0011] Optionally, the bosses in the first boss group and the second boss group are both boss strip plates.

[0012] Optionally, the first boss group includes a rated pressure control boss strip plate, a reclosing alarm pressure control boss strip plate, a closing pressure alarm control boss strip plate, and a opening pressure alarm control boss strip plate; the second boss group includes a reclosing interlocking pressure control boss strip plate, an opening interlocking pressure control boss strip plate, and a closing interlocking pressure control boss strip plate.

[0013] Optionally, the stroke lengths of the rated pressure control boss strip plate, the reclosing alarm pressure control boss strip plate, the closing pressure alarm control boss strip plate, and the opening pressure alarm control boss strip plate increase sequentially, and the second boss group includes the reclosing lockout pressure control boss strip plate, the opening lockout pressure control boss strip plate, and the closing lockout pressure control boss strip plate with sequentially increasing stroke lengths.

[0014] Optionally, the bottom surface of the boss plate is provided with a plurality of mounting holes, and the boss strip plates are all mounted on the top of the boss plate by mounting screws passing through the mounting holes.

[0015] Secondly, this utility model provides a spring energy storage limit switch for a hydraulic spring operating mechanism, including the aforementioned switch travel monitoring device.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The boss plate structure of this utility model is simple and intuitive. Whether integrally machined or assembled, it can accurately correspond to each pressure control stroke of the hydraulic spring operating mechanism, improving the accuracy of stroke monitoring. The boss's design, with bosses arranged on both sides, contrasts with conventional hydraulic operating mechanisms where the limit switch corresponds to alarm pressure control. The adjacent arrangement of the pressure control boss and the locking pressure control boss in this utility model reduces the machining difficulty of the boss plate and facilitates installation and operation.

[0018] Furthermore, the boss plate of this utility model achieves stroke monitoring through linear motion, optimizes the overall structure of the hydraulic spring operating mechanism, reduces unnecessary parts, improves the reliability and stability of the equipment, and reduces maintenance costs. Attached Figure Description

[0019] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the present invention and do not specifically limit the shapes and proportions of the components. In the drawings:

[0020] Figure 1 shows the spring energy storage limit switch of an existing hydraulic spring operating mechanism;

[0021] Figure 2 shows the cam plate of the spring energy storage limit switch of the existing hydraulic spring operating mechanism;

[0022] Figure 3 shows the boss plate of Embodiment 1 of this utility model;

[0023] Figure 4 shows the boss plate of Embodiment 2 of this utility model;

[0024] Figure 5 is a cross-sectional view of section AA in Figure 4 of this utility model;

[0025] Figure 6 shows a spring energy storage limit switch of a hydraulic spring operating mechanism according to an embodiment of the present utility model;

[0026] The components include: 1. Rated pressure control boss; 2. Reclosing alarm pressure control boss; 3. Closing pressure alarm control boss; 4. Opening pressure alarm control boss; 5. Reclosing interlocking pressure control boss; 6. Opening interlocking pressure control boss; 7. Closing interlocking pressure control boss; 8. Boss plate; 9. Opening pressure alarm control boss strip plate; 10. Closing interlocking pressure control boss strip plate; 11. Opening interlocking pressure control boss strip plate; 12. Rated pressure control boss strip plate; 13. Reclosing alarm pressure control boss strip plate; 14. Closing pressure alarm control boss strip plate; 15. Reclosing interlocking pressure control boss strip plate; 16. Boss mounting screw; 19. Movable platform; 20. Micro switch. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] When an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments. The use of the term "horizontal" does not imply that the component is required to be absolutely horizontal, but rather that it may be slightly tilted. "Horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0031] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be understood that the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0033] The present invention will now be described in detail with reference to the accompanying drawings.

[0034] As shown in Figure 3, the present invention provides a switch travel monitoring device, which includes a boss plate 8, on which a first boss group and a second boss group are provided; both the first boss group and the second boss group have several bosses with different travel lengths; the bosses of the first boss group and the bosses of the second boss group face opposite directions; the positions of the bosses of the first boss group and the second boss group are matched with the positions of the rollers of the micro switch 20.

[0035] The boss plate structure of this utility model is simple and intuitive. Whether integrally machined or assembled, it can accurately correspond to each pressure control stroke of the hydraulic spring operating mechanism, improving the accuracy of stroke monitoring. The design of the bosses arranged on both sides is different from the conventional hydraulic operating mechanism's limit switch corresponding to alarm pressure control. The pressure control bosses and locking pressure control bosses of this utility model are arranged adjacent to each other, reducing the machining difficulty of the boss plate 8 and facilitating installation and operation.

[0036] Example 1

[0037] A switch travel monitoring device according to this embodiment includes a boss plate 8, on which a single protruding block is provided.

[0038] The boss plate 8 is a rectangular plate, and the protruding block is arranged along one diagonal of the boss plate 8.

[0039] The two sides of the protruding block have a first group of protrusions and a second group of protrusions, respectively.

[0040] Both the first boss group and the second boss group have several bosses with different stroke lengths, and the bosses in the first boss group and the bosses in the second boss group have opposite platform orientations.

[0041] The orientation of each boss is parallel to the straight line of the long side of the boss plate 8.

[0042] Specifically, the bosses of the first boss group and the bosses of the second boss group have the same height.

[0043] The platform positions of the first boss group and the second boss group are matched with the roller position of the micro switch 20.

[0044] The first boss group includes a rated pressure control boss 1, a reclosing alarm pressure control boss 2, a closing pressure alarm control boss 3, and a opening pressure alarm control boss 4.

[0045] The second boss group includes a reclosing interlocking pressure control boss 5, a tripping interlocking pressure control boss 6, and a closing interlocking pressure control boss 7.

[0046] The stroke lengths of the rated pressure control boss 1, the reclosing alarm pressure control boss 2, the closing pressure alarm control boss 3, and the opening pressure alarm control boss 4 increase sequentially, as do the stroke lengths of the reclosing lockout pressure control boss 5, the opening lockout pressure control boss 6, and the closing lockout pressure control boss 7.

[0047] In this embodiment, a boss plate of a switch travel monitoring device is manufactured by selecting a flat plate according to the specific travel monitoring requirements of the hydraulic spring mechanism, and using processing equipment to directly process multiple bosses of different lengths on the whole flat plate.

[0048] During the manufacturing process, ensure that its relative dimensions are the same as the relative dimensions of each energy storage stroke monitoring of the hydraulic spring operating mechanism.

[0049] After processing, the boss plate 8 is fixedly installed on the movable table 19 below the micro switch 20 with screws.

[0050] When the hydraulic spring mechanism performs energy storage or pressure release operations, the movable platform 19 below the micro switch 20 drives the boss plate 8 to slide. The bosses on the boss plate 8 contact the rollers of the micro switch 20 in sequence, driving the opening and closing points of the micro switch piece to switch and output corresponding signals, thereby realizing accurate monitoring of the stroke of the hydraulic spring operating mechanism.

[0051] Example 2

[0052] A switch travel monitoring device according to this embodiment includes a boss plate 8, and the bottom surface of the boss plate 8 has a plurality of mounting holes.

[0053] The boss plate 8 is a rectangular plate. The boss plate 8 has a first boss group and a second boss group.

[0054] Specifically, both the first boss group and the second boss group have several boss strip plates with different stroke lengths.

[0055] The first end of the boss strip plate of the first boss group and the first end of the boss strip plate of the second boss group are respectively set on the two short sides of the boss plate 8; the second end of the boss strip plate of the first boss group and the second end of the boss strip plate of the second boss group are both table surfaces that match the position of the roller of the micro switch 20.

[0056] The long axis of the boss strip is parallel to the long side of the boss plate 8.

[0057] Specifically, the heights of the boss strip plates in the first boss group and the second boss group are the same.

[0058] The first boss group includes a rated pressure control boss strip plate 12, a reclosing alarm pressure control boss strip plate 13, a closing pressure alarm control boss strip plate 14, and a opening pressure alarm control boss strip plate 9.

[0059] The second boss group includes a reclosing interlocking pressure control boss strip plate 15, a tripping interlocking pressure control boss strip plate 11, and a closing interlocking pressure control boss strip plate 10.

[0060] The stroke lengths of the rated pressure control boss strip plate 12, the reclosing alarm pressure control boss strip plate 13, the closing pressure alarm control boss strip plate 14, and the opening pressure alarm control boss strip plate 9 increase sequentially.

[0061] The second boss group includes a reclosing interlocking pressure control boss strip plate 15, a tripping interlocking pressure control boss strip plate 11, and a closing interlocking pressure control boss strip plate 10, with the stroke lengths increasing sequentially.

[0062] Specifically, each of the boss strip plates is mounted on top of the boss plate 8 via mounting screws 16 and mounting holes on the bottom surface of the boss plate 8. The mounting screws 16 pass from the bottom of the boss plate 8 to the top of the boss plate 8. The bottom of the boss strip plate has several blind holes corresponding to the positions of the mounting holes on the boss plate 8.

[0063] In this embodiment, the boss plate of the switch travel monitoring device is manufactured by first preparing a flat plate and a narrow strip plate made of the same material to ensure consistent performance.

[0064] The narrow strip plate is assembled onto the flat plate using mounting screws 16, ensuring that the relative positions of each boss strip plate are accurate and that the dimensions of the boss strip plate are the same as the relative dimensions of each energy storage stroke monitoring of the hydraulic spring operating mechanism.

[0065] After assembly, the flatness and dimensional accuracy of the entire boss plate 8 are checked to ensure it meets the usage requirements. Then, the assembled boss plate is installed on the movable platform 19 below the micro switch 20. During equipment operation, the boss plate 8 slides along the movable platform 19 below the micro switch 20, enabling the monitoring of the stroke of the hydraulic spring operating mechanism.

[0066] Example 3

[0067] This embodiment of a hydraulic spring operating mechanism spring energy storage limit switch includes a switch travel monitoring device and a micro switch 20. A movable platform 19 is provided below the micro switch 20, and the boss plate 8 is mounted on the movable platform.

[0068] In summary, the switch travel monitoring device of this utility model effectively solves the problems in the prior art through the unique structural design and processing method of the boss plate 8.

[0069] Unless otherwise specified, the equipment components involved in the above embodiments are all conventional equipment components, and the structural settings, working methods or control methods involved are all conventional settings, working methods or control methods in the art unless otherwise specified.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A switch stroke monitoring device, characterized by, Includes a boss plate (8), on which there is a first boss group and a second boss group; the first boss group and the second boss group each have several bosses with different stroke lengths; the bosses of the first boss group and the bosses of the second boss group have opposite table surfaces; the table surface positions of the first boss group and the second boss group are matched with the roller position of the micro switch (20).

2. The switch travel monitoring device according to claim 1, characterized in that, The first boss group includes a rated pressure control boss (1), a reclosing alarm pressure control boss (2), a closing pressure alarm control boss (3), and a tripping pressure alarm control boss (4); the second boss group includes a reclosing interlocking pressure control boss (5), a tripping interlocking pressure control boss (6), and a closing interlocking pressure control boss (7).

3. A switch stroke monitoring device according to claim 2, wherein The stroke lengths of the rated pressure control boss (1), reclosing alarm pressure control boss (2), closing pressure alarm control boss (3) and opening pressure alarm control boss (4) increase sequentially; the stroke lengths of the reclosing lockout pressure control boss (5), opening lockout pressure control boss (6) and closing lockout pressure control boss (7) increase sequentially.

4. A switch stroke monitoring device according to claim 1, wherein The bosses of the first boss group and the bosses of the second boss group have the same height.

5. A switch stroke monitoring device according to claim 1, wherein The boss plate (8) is provided with a whole protruding block, and the first boss group and the second boss group are respectively provided on both sides of the protruding block.

6. The switch travel monitoring device according to claim 1, characterized in that, The bosses in the first boss group and the second boss group are both boss strip plates.

7. A switch stroke monitoring device according to claim 6, wherein The first boss group includes a rated pressure control boss strip plate (12), a reclosing alarm pressure control boss strip plate (13), a closing pressure alarm control boss strip plate (14), and a opening pressure alarm control boss strip plate (9); the second boss group includes a reclosing interlocking pressure control boss strip plate (15), an opening interlocking pressure control boss strip plate (11), and a closing interlocking pressure control boss strip plate (10).

8. A switch stroke monitoring device according to claim 7, characterised in that The stroke lengths of the rated pressure control boss strip plate (12), the reclosing alarm pressure control boss strip plate (13), the closing pressure alarm control boss strip plate (14), and the opening pressure alarm control boss strip plate (9) increase sequentially. The second boss group includes the reclosing interlocking pressure control boss strip plate (15), the opening interlocking pressure control boss strip plate (11), and the closing interlocking pressure control boss strip plate (10), whose stroke lengths increase sequentially.

9. A switch stroke monitoring device according to claim 6, wherein The bottom surface of the boss plate (8) is provided with several mounting holes, and the boss strip plates are all mounted on the top of the boss plate (8) by mounting screws (16) passing through the mounting holes.

10. A hydraulic spring operating mechanism spring energy storage travel switch, characterized by, Includes a switch travel monitoring device as described in any one of claims 1 to 9.

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