Operating system of grounding switch and switch cabinet using same

Abstract

The utility model relates to an operating system of a grounding switch, comprising a first gear transmission group which is configured to act on the grounding switch to control the opening and closing of the grounding switch; the second gear transmission set is located on the upstream of the first gear transmission set; the connecting rod is positioned between the first gear transmission group and the second gear transmission group and is used for connecting the two to transmit force; the operating rod is located on the upstream of the second gear transmission set and is operably connected with the second gear transmission set so as to transmit externally applied force to the second gear transmission set, and the operating rod and the link rod are arranged in the basically same direction; the second gear set is configured to convert rotational motion of the operating rod into linear motion of the link rod to transfer force to the first gear set. According to the operating system, the mutually matched gear transmission sets are designed to be connected through the three-connecting-rod structure, the movement mode conversion from a rotating pair to a moving pair is achieved, and the product has good structural stability and good electrical performance while the miniaturization requirement is met. The utility model also relates to a switch cabinet using the operating system.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical devices, in particular to an operating system of a grounding switch and a switch cabinet using the same. Background Art

[0002] At present, switchgear (such as 40.5kV) is widely used in power distribution systems, and grounding switches are important components of switchgear. Grounding switches can protect the safe operation of power systems and control the power systems. Among them, the operating transmission system in the grounding switch can control the opening and closing of the grounding switch. Therefore, the transmission operating system is crucial to the safe operation of the power system, especially the reliable mechanical transmission quality of the transmission operating system. In addition, there are clear requirements for the minimum air gap in air insulation in national and enterprise standards (such as GB / T3906, GB / T11022 and DL / T404).

[0003] The existing operating transmission system used in grounding switches is often controlled by rotating the shaft, but in order to meet the minimum air gap specified in the above standards, it is often necessary to add an insulating sleeve to the shaft to avoid breakdown and short circuit between the conductor and the ground. However, during the long-term operation of the system, due to environmental influences, there are often problems such as aging and moisture of the insulation material, which will cause the insulation performance of the system to deteriorate and increase the risk of power equipment operation.

[0004] Therefore, there is still a need in the relevant field to improve the operating system of the grounding switch to further optimize its performance to improve or solve the problems existing in the prior art. Utility Model Content

[0005] Therefore, the task of the present invention is to provide an operating system for a grounding switch and a switch cabinet using the same, thereby overcoming the above-mentioned shortcomings of the prior art.

[0006] In order to accomplish the above-mentioned task, the utility model provides an operating system for a grounding switch, comprising: a first gear transmission group, which is configured to act on the grounding switch to control the opening and closing of the grounding switch; a second gear transmission group, which is located upstream of the first gear transmission group; a connecting rod, which is located between the first gear transmission group and the second gear transmission group and connects the two to transmit force; an operating rod, which is located upstream of the second gear transmission group and is operably connected thereto, so as to transmit the externally applied force to the second gear transmission group, and the operating rod and the connecting rod are arranged in substantially the same direction; wherein the second gear transmission group is configured to be able to convert the rotational motion of the operating rod into the linear motion of the connecting rod to transmit the force to the first gear transmission group.

[0007] In a preferred embodiment, the second gear transmission group includes: a bevel gear group, which is configured to receive the force from the outside transmitted by the operating lever and convert the movement caused by the force from a rotational movement along a first direction into a rotational movement along a second direction angled to the first direction; a crank arm, a first end of which is engaged to the bevel gear group and is configured to be able to rotate along the second direction synchronously with the bevel gear group, and a second end of the crank arm is engaged to the connecting rod to convert the rotational movement of the crank arm along the second direction into linear movement of the connecting rod.

[0008] In a preferred embodiment, the bevel gear set includes: a first bevel gear, which is configured to engage the operating lever and can be driven by the operating lever to rotate along the first direction; a second bevel gear, which is configured as a disc-shaped bevel gear and is engaged to the first bevel gear so that it can rotate along the second direction under the rotation drive of the first bevel gear, and a gear shaft, which is engaged to the second bevel gear and is configured to rotate with the second bevel gear, thereby driving the crank arm to move synchronously.

[0009] In a preferred embodiment, the crank arm is located at an end of the gear shaft away from the second bevel gear, and the connecting rod is coupled to a side of the crank arm facing the second bevel gear.

[0010] In a preferred embodiment, the connecting rod is constructed as a stepped plate and includes: a first section, which is detachably connected to the first gear transmission group; a second section, which is detachably connected to the side of the crank arm facing the second bevel gear; and an intermediate section, which is located between the first section and the second section and protrudes relative to the two toward a side away from the second bevel gear.

[0011] In a preferred embodiment, the grounding switch includes: a rotating shaft, which is operably connected to the first gear transmission group and rotated by the operation thereof; a stationary contact, which is configured to be electrically connected to the insulating end of the grounding switch; and a rotating knife switch, which is operably arranged on the rotating shaft and rotates synchronously with the rotating shaft to engage or disengage the stationary contact, thereby closing or opening the grounding switch.

[0012] In a preferred embodiment, the first gear transmission group includes: another bevel gear group, which is configured to convert the linear motion of the connecting rod into the rotational motion of the rotating shaft; another crank arm, which is configured to form a three-link structure together with the connecting rod and the crank arm to perform linear motion together.

[0013] In a preferred embodiment, the gear shaft has an anti-rotation portion configured as a notch, and the crank arm has a matching portion configured as a protrusion, and the crank arm and the gear shaft are matched and engaged with the matching portion through the anti-rotation portion, so that the crank arm can rotate synchronously with the gear shaft but will not rotate relative to the gear shaft.

[0014] The utility model also provides a switch cabinet, wherein the switch cabinet is equipped with the above-mentioned operating system.

[0015] In a preferred embodiment, the invention comprises: a panel facing the operator and configured to control the operating lever; a side panel, the operating system being arranged adjacent to the side panel; a back panel configured to at least support a rotating shaft of the operating switch; the side panel being perpendicular to the panel and the back panel and configured to define a receiving space to receive the operating system and the grounding switch.

[0016] Some of the other features and advantages of the present invention will be obvious to those skilled in the art who have read the present invention, and the other parts will be described in the following specific embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, wherein:

[0018] Figure 1 is an internal view of the switch cabinet provided by the utility model, wherein an operating system and a grounding switch are shown;

[0019] Figure 2 It is a stereoscopic diagram of the operating system for the grounding switch provided by the utility model;

[0020] Figure 3 is a partial view of the earthing switch, which also shows part of the structure of the operating system;

[0021] Figure 4 yes Figure 2 A local structural view of the operating system;

[0022] Figure 5 It is an exploded view of the second gear transmission group of the operating system for the grounding switch provided by the utility model;

[0023] Figure 6 It is a schematic diagram of the grounding switch in the open state when the operating system provided by the utility model is in the non-starting state;

[0024] Figure 7 It is a schematic diagram of the closing state of the grounding switch when the operating system provided by the utility model is in the starting state.

[0025] Description of Reference Numerals

[0026] 1-operating system; 10-first gear transmission group; 12-second gear transmission group; 120-bevel gear group; 120a-first bevel gear; 120b-second bevel gear; 120c-gear shaft; 120d-anti-rotation part; 122-crank arm; 122a-matching part; 14-connecting rod; 140-first section; 142-second section; 144-middle section; 16-operating lever; 2-earthing switch; 20-rotating shaft; 22-static contact; 24-rotating knife switch; 3-switch cabinet; 30-panel; 32-side panel; 34; back panel. DETAILED DESCRIPTION

[0027] The operating system for the grounding switch and the exemplary scheme of the switch cabinet using the operating system for the grounding switch according to the utility model are now described in detail with reference to the accompanying drawings. The accompanying drawings are provided to present multiple embodiments of the utility model, but the accompanying drawings do not have to be drawn according to the dimensions of the specific embodiments, and certain features may be enlarged, removed or partially cut to better illustrate and explain the disclosure of the utility model. Some components in the accompanying drawings can be adjusted in position according to actual needs without affecting the technical effect. The phrase "in the accompanying drawings" or similar terms appearing in the specification do not necessarily refer to all the drawings or examples.

[0028] Certain directional terms used to describe the drawings below, such as "inner", "outer", "upper", "lower" and other directional terms will be understood to have their normal meanings and refer to those directions involved when the drawings are normally viewed. Unless otherwise specified, the directional terms described in this specification are basically in accordance with the conventional directions understood by those skilled in the art.

[0029] The terms "first", "first", "second", "second" and the like used in the present invention do not indicate any order, quantity or importance, but are used to distinguish one component from other components.

[0030] As used herein, the terms “substantially” or “approximately” mean that the referenced parameters or values ​​do not need to be achieved precisely, but deviations or variations (including, for example, tolerances, measurement errors, measurement precision limitations, and other factors known to those skilled in the art) may occur in an amount that does not interfere with the effect desired to be provided by the described features.

[0031] Figure 1 FIG. 1 is an internal view of a switch cabinet 3 provided by the present invention, wherein an operating system 1 and a grounding switch 2 are shown. Figure 1 As shown, the figure only shows a partial structure of the switch cabinet 3 by way of example. In order to facilitate observation of the interior of the switch cabinet 3, a partial housing structure of the switch cabinet 3 is omitted in the figure. Figure 1The panel 30, side panels 32 and back panel 34 of the switch cabinet 3 are shown, wherein the panel 30 and back panel 34 are opposite to each other, the side panels 32 are a pair and are arranged opposite to each other, and the switch cabinet 3 also has a top panel and a bottom panel (only the bottom panel is shown in the figure). The above panels together define a storage space for accommodating the operating system 1 and the grounding switch 2, and the space can be generally defined as a rectangular parallelepiped shape. Those skilled in the art can understand that the above shape can be adjusted as needed.

[0032] See again Figure 1 The operating system 1 is located between the panel 30 and the back panel 34 and is positioned relative to the two. The panel 30 faces the operator so that the operator can control the operating system 1 by acting on the operating lever 16. The operating system 1 is spaced a certain distance from the side panel 32. Part of the structure of the grounding switch 2, such as the rotating shaft 20, is positioned on the back panel 34.

[0033] Figure 2 It is a three-dimensional diagram of an operating system 1 for a grounding switch 2 provided by the utility model; Figure 3 FIG. 2 is a partial view of the grounding switch 2, which also shows a partial structure of the operating system 1. Figures 2 to 3 As shown, the grounding switch 2 includes a rotating shaft 20, a stationary contact 22 and a rotating knife switch 24. The rotating shaft 20 is operably connected to the first gear transmission group 10 to be mentioned below so as to rotate under the action of the gear transmission group. The rotating knife switch 24 is arranged on the rotating shaft 20 to rotate synchronously with the rotating shaft 20. The stationary contact 22 (including an insulating terminal and a copper bar) is usually electrically connected to the insulating end of the grounding switch 2. As the rotating shaft 20 rotates, the rotating knife switch 24 can switch between opening and closing with the stationary contact 22, thereby satisfying the user's opening and closing control of the grounding switch 2.

[0034] Specifically, the above-mentioned opening and closing control of the grounding switch 2 is mainly realized by the operating system 1. Figure 2The operating system 1 includes a first gear transmission group 10, a connecting rod 14, a second gear transmission group 12 and an operating rod 16. As described above, the first gear transmission group 10 is operably connected to the rotating shaft 20 of the grounding switch 2 to control the rotating shaft 20, and further control the rotating knife switch 24 on the rotating shaft 20. The connecting rod 14 is located upstream of the first gear transmission group 10, one end of the connecting rod 14 is connected to the first gear transmission group 10, and the other end is connected to the second gear transmission group 12. The second gear transmission group 12 is also connected to the operating rod 16, so that it is directly controlled by the operating rod 16. During the operation, the user applies an external force to the operating rod 16, and the operating rod 16 rotates and transmits the force to the second gear transmission group 12, and then to the connecting rod 14 and then to the first gear transmission group 10. Due to the structural characteristics of the second gear transmission group 12, it converts the rotation pair of the operating rod 16 into the translation pair of the connecting rod 14, that is, the rotational motion of the operating rod 16 is converted into the linear motion of the connecting rod 14 after passing through the second gear transmission group 12. The operating rod 16 and the connecting rod 14 are arranged substantially along the same direction, which is approximately the depth direction of the switch cabinet 3 .

[0035] Figure 4 yes Figure 2 A local structural view of the operating system 1; Figure 5 FIG. 1 is an exploded view of the second gear transmission group 12 of the operating system 1 for the grounding switch 2 provided by the present invention. Figures 4 to 5 As shown, the second gear transmission group 12 includes a bevel gear group 120 and a crank arm 122. The bevel gear group 120 receives force from the outside by engaging the operating rod 16, and converts the force from rotational motion to linear (translational) motion. The crank arm 122 transmits the linear motion to the connecting rod 14 by engaging with the bevel gear group 120.

[0036] Specifically, the process of converting the rotating pair into the moving pair is mainly achieved through the following structures and methods. Figure 5The bevel gear set 120 includes a first bevel gear 120a, a second bevel gear 120b and a gear shaft 120c. The first bevel gear 120a is configured to engage the operating rod 16, and both the first bevel gear 120a and the operating rod 16 rotate in the same direction. The second bevel gear 120b is configured as a disc-shaped bevel gear and is engaged with the first bevel gear 120a, so that the second bevel gear 120b is driven by the first bevel gear 120a to rotate. The rotation direction of the first bevel gear 120a can be, for example, in the depth direction (first direction) of the switch cabinet 3, for example, clockwise (those skilled in the art can understand that the rotation direction can also be adjusted as needed), while the second bevel gear 120b rotates in a second direction perpendicular to the first direction (i.e., the width direction of the switch cabinet 3). The gear shaft 120c is engaged with the second bevel gear 120b and is designed to rotate synchronously with the second bevel gear 120b. The gear shaft 120c is also engaged with the crank arm 122, so that when the gear shaft 120c rotates, the crank arm 122 is also driven to move synchronously. The synchronous rotation of the gear shaft 120c and the second bevel gear 120b can be achieved, for example, by the cooperation of the convex part and the concave part. The gear shaft 120c is provided with an anti-rotation part 120d (the anti-rotation part 120d is configured as a notch) at the position where the gear shaft 120c engages with the crank arm 122, and the crank arm 122 has a matching part 122a configured as a convex block. The crank arm 122 and the gear shaft 120c are matched and engaged by the anti-rotation part 120d and the matching part 122a, so that the crank arm 122 can rotate synchronously with the gear shaft 120c but will not rotate relative to the gear shaft 120c. The above-mentioned matching structure ensures the synchronization of the rotation of the gear shaft 120c and the crank arm 122. The anti-rotation portion 120d (eg, notch) of the gear shaft 120c may be constructed as the same structure as the recess (which is configured to engage with the second bevel gear 120b and cooperate with the protrusion thereof) or may be formed as one piece.

[0037] like Figure 1 and 4As shown, in the second gear transmission group 12, the crank arm 122 is located on a side closer to the side plate 32 of the switch cabinet 3, and the bevel gear group 120 is slightly farther from the side plate 32 of the switch cabinet 3 than the crank arm 122. The other end of the crank arm 122 engages the connecting rod 14, and specifically, the connecting rod 14 is arranged on the side of the crank arm 122 facing the inside of the switch cabinet 3. Here, the connecting rod 14 is configured as a stepped plate. The connecting rod 14 includes a first section 140, a second section 142, and an intermediate section 144 located therebetween. Among them, the first section 140 is detachably connected to the first gear transmission group 10. The second section 142 is detachably connected to the crank arm 122, and specifically, the second section 142 engages with the crank arm 122 on the side facing the inside of the switch cabinet 3. The middle section 144 protrudes toward one side of the side plate 32 of the switch cabinet 3 relative to the first section 140 and the second section 142 (this side can also be regarded as the side away from the inside of the switch cabinet 3). The design of the middle section 144 makes the connecting rod 14 look roughly like a stepped plate as a whole. This design of the connecting rod 14 can reduce its occupation of the internal space (for example, when the copper busbars of the same specifications are used, the phase-to-phase size of the copper busbars is effectively expanded (for example, to 245 mm)), thereby providing more space for the main structure inside the switch cabinet 3 to achieve product miniaturization while taking into account the gap requirements and performance requirements of electrification. Compared with the switch cabinet 3 in the prior art, the switch cabinet 3 using the above-mentioned design in the utility model does not need to use an insulating partition, but can still meet the insulation performance requirements (for example, avoiding the risk of breakdown caused by long-term operation), while also achieving product miniaturization.

[0038] The process of converting the moving pair into the rotating pair is mainly realized by the following structures and methods. That is, the conversion of the rotational motion of the connecting rod 14 into the linear motion of the grounding switch 2 can be mainly realized by the first gear transmission group 10. The first gear transmission group 10 includes another bevel gear group 120 and another crank arm 122. The first gear transmission group 10 is configured to convert the linear motion of the connecting rod 14 into the rotational motion of the rotating shaft 20 of the grounding switch 2. The above-mentioned motion conversion is realized, for example, by a bevel gear member configured as a disc and a gear shaft 120c member engaged therewith. Among them, the bevel gear member is engaged with the gear shaft 120c member, the gear shaft 120c member is engaged with another crank arm 122, and the other crank arm 122 is engaged with the aforementioned connecting rod 14. The crank arm 122 of the second gear transmission group 12, the connecting rod 14 and the other crank arm 122 of the first gear transmission group 10 together constitute a three-link structure to complete the linear motion, thereby realizing a multi-stage mechanical hard connection transmission (i.e., the operating rod 16 rotates-the three-link translation reciprocates-the grounding switch 2 rotates). The above design provides a safe and reliable connection structure.

[0039] Figure 6 This is a schematic diagram of the grounding switch 2 in the open state when the operating system 1 provided by the utility model is in the unstarted state; Figure 7It is a schematic diagram of the closing state of the grounding switch 2 when the operating system 1 provided by the utility model is in the starting state.

[0040] like Figures 6 to 7 As shown, the transition from the open state to the closed state of the grounding switch 2 is shown. Specifically, the operation of the closing process is as follows: the operating lever 16 is rotated, and the crank arm 122 on the second bevel gear 120b transmission group drives the connecting rod 14 to rotate, and the crank arm 122 is connected to the connecting rod 14 to move to the left, and the connecting rod 14 is connected to the crank arm 122 of the first bevel gear 120a transmission group, thereby driving the rotating shaft 20 of the grounding switch 2 to rotate clockwise, and then driving the rotating knife switch 24 of the grounding switch 2 to rotate clockwise, thereby completing the closing action. Correspondingly, the operation process of the grounding switch 2 transitioning from the closed state to the open state is opposite to the above process. Those skilled in the art can understand that the above-mentioned directions can be adaptively changed as needed, which will not deviate from the protection scope of the utility model.

[0041] The utility model provides an operating system for a grounding switch and a switch cabinet using the same. The grounding switch operating system has a novel structural design. By designing the gear transmission groups that cooperate with each other to adopt a three-link structure connection, the movement mode conversion from the rotating pair to the moving pair is realized, so that the product has good structural stability and good electrical performance while achieving miniaturization requirements.

[0042] Although the present invention is described in detail with only a limited number of embodiments, it should be readily understood that the present invention is not limited to such disclosed embodiments. On the contrary, the present invention may be modified by incorporating any number of previously undescribed variations, changes, substitutions, or equivalent devices, but this is commensurate with the spirit and scope of the present invention. In addition, although various different embodiments of the present invention have been described, it is understood that aspects of the present invention may include only some of the embodiments. Therefore, the present invention is not to be considered as being limited by the foregoing description, but only by the appended claims.

Claims

1. An operating system (1) for a grounding switch (2), characterized in that: include: A first gear transmission group (10) is configured to act on the grounding switch (2) to control the opening and closing of the grounding switch (2); a second gear transmission set (12) located upstream of the first gear transmission set (10); A connecting rod (14) located between the first gear transmission group (10) and the second gear transmission group (12) and connecting the two to transmit force; an operating rod (16) located upstream of the second gear transmission group (12) and operably connected thereto so as to transmit an externally applied force to the second gear transmission group (12), the operating rod (16) being arranged in substantially the same direction as the connecting rod (14); The second gear transmission group (12) is configured to convert the rotational movement of the operating rod (16) into the linear movement of the connecting rod (14) so ​​as to transmit the force to the first gear transmission group (10).

2. The operating system (1) of the grounding switch (2) according to claim 1, characterized in that: The second gear transmission group (12) comprises: a bevel gear set (120) configured to receive a force from the outside transmitted by the operating rod (16) and convert the movement caused by the force from a rotational movement in a first direction into a rotational movement in a second direction that is angled with the first direction; A crank arm (122), a first end of which is engaged with the bevel gear set (120) and is configured to be able to rotate in the second direction synchronously with the bevel gear set (120), and a second end of the crank arm (122) is engaged with the connecting rod (14) to convert the rotational movement of the crank arm (122) in the second direction into the linear movement of the connecting rod (14).

3. The operating system (1) of the grounding switch (2) according to claim 2, characterized in that: The bevel gear set (120) comprises: a first bevel gear (120a) configured to engage the operating rod (16) and to be driven by the operating rod (16) to rotate in the first direction; a second bevel gear (120b) configured as a disc-shaped bevel gear and coupled to the first bevel gear (120a) so as to be rotatable in the second direction by the rotation drive of the first bevel gear (120a), The gear shaft (120c) is coupled to the second bevel gear (120b) and is configured to rotate following the second bevel gear (120b), thereby driving the crank arm (122) to move synchronously.

4. The operating system (1) of the grounding switch (2) according to claim 3, characterized in that: The crank arm (122) is located at an end of the gear shaft (120c) away from the second bevel gear (120b), and the connecting rod (14) is connected to a side of the crank arm (122) facing the second bevel gear (120b).

5. The operating system (1) of the grounding switch (2) according to claim 3, characterized in that: The connecting rod (14) is constructed as a stepped plate and comprises: a first section (140) detachably connected to the first gear transmission set (10); a second section (142) detachably connected to a side of the crank arm (122) facing the second bevel gear (120b); A middle section (144) is located between the first section (140) and the second section (142) and protrudes relative to the first section (140) and the second section (142) toward a side away from the second bevel gear (120b).

6. The operating system (1) of the grounding switch (2) according to claim 1, characterized in that: The grounding switch (2) comprises: A rotating shaft (20) operatively connected to the first gear transmission set (10) and rotated by the operation thereof; a stationary contact (22) configured to be electrically connected to an insulating end of the grounding switch (2); A rotary knife switch (24) is operably arranged on the rotary shaft (20) and rotates synchronously with the rotary shaft (20) to engage or disengage the stationary contact (22), thereby closing or opening the grounding switch (2).

7. The operating system (1) of the grounding switch (2) according to claim 6, characterized in that: The first gear transmission set (10) comprises: Another bevel gear set, which is configured to convert the linear motion of the connecting rod (14) into the rotational motion of the rotating shaft (20); Another crank arm is configured to form a three-link structure together with the connecting rod (14) and the crank arm (122) to perform linear motion together.

8. The operating system (1) of the grounding switch (2) according to claim 3, characterized in that: The gear shaft (120c) has an anti-rotation portion (120d) configured as a notch, and the crank arm (122) has a matching portion (122a) configured as a protrusion. The crank arm (122) and the gear shaft (120c) are matched and engaged with the anti-rotation portion (120d) and the matching portion (122a), so that the crank arm (122) can rotate synchronously with the gear shaft (120c) but will not rotate relative to the gear shaft (120c).

9. A switch cabinet (3), characterized in that: The switch cabinet (3) is equipped with an operating system (1) for the grounding switch (2) according to any one of claims 1 to 8.

10. The switch cabinet (3) according to claim 9, characterized in that: include: a panel (30) facing the operator and configured to enable the operating lever (16) to be controlled therethrough; a side panel (32), the operating system (1) being arranged adjacent to the side panel (32); a back plate (34) configured at least to support a rotating shaft (20) for operating the switch; The side plate (32) is perpendicular to the front plate (30) and the back plate (34) and is configured to define a receiving space for receiving the operating system (1) and the grounding switch (2) therein.

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