Grounding knife switch

Abstract

The utility model discloses a grounding knife-switch, and belongs to the technical field of power equipment. The grounding knife switch comprises a knife switch assembly, a transmission rod, a driving assembly and a limiting assembly, the knife switch assembly comprises a plurality of moving contacts and a rotating rod, and one end of each moving contact is fixedly arranged on the rotating rod; the transmission rod is in transmission connection with the rotating rod through the connecting rod assembly, and the rotating rod can drive the moving contact and the static contact to be switched off or switched on by rotating the transmission rod. The driving assembly comprises a driven bevel gear and a driving bevel gear, the driven bevel gear is fixedly arranged on the transmission rod in a sleeving mode, and the driving bevel gear is meshed with the driven bevel gear; the limiting assembly comprises a first limiting piece and a second limiting piece, the first limiting piece and the second limiting piece are both detachably connected with the transmission rod, and the driving bevel gear is stopped by the first limiting piece and the second limiting piece. According to the utility model, the rotation stroke of the transmission rod in the switching-off and switching-on processes can be controlled, and the accuracy and safety of switching-on and switching-off are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to power equipment technical field especially relates to a grounding knife switch. BACKGROUND

[0002] In power production, the change of power equipment operation state is realized through switching operation. Switching operation refers to the process of changing electrical equipment from one operation state to another state, or an operation that changes the operation mode of the system. Its main purpose is to cut off or connect the circuit, realize the control of the equipment, and ensure the normal operation and safety of the electrical equipment. It plays an important role in power system maintenance and fault handling.

[0003] The grounding knife switch is an important device for converting the equipment from the running state to the maintenance state in the switching operation. The convenience, operability and universality of the grounding knife switch directly affect the smooth progress of the switching operation process and the safety of the equipment maintenance personnel.

[0004] In the prior art, the transmission rod of the grounding knife switch is rotated by the operation and maintenance personnel. Since there is no limiting mechanism, the rotation stroke of the transmission rod cannot be controlled during the opening and closing process, and it completely relies on manual observation, which is time-consuming and labor-intensive.

[0005] Therefore, there is an urgent need to provide a grounding knife switch to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a grounding knife switch, which can control the rotation stroke of the transmission rod during the opening and closing process, and ensure the accuracy and safety of the closing and opening.

[0007] To achieve the above-mentioned purpose, the following technical scheme is provided:

[0008] The grounding knife switch comprises:

[0009] The knife switch assembly comprises a plurality of movable contacts and a rotating rod, one end of each of the plurality of movable contacts is fixedly arranged on the rotating rod;

[0010] The transmission rod is drivingly connected to the rotating rod through the connecting rod assembly. Rotating the transmission rod can drive the rotating rod to drive the movable contact and the static contact to open or close;

[0011] The driving assembly comprises a driven bevel gear and a driving bevel gear. The driven bevel gear is fixedly sleeved on the transmission rod, and the driving bevel gear is engaged with the driven bevel gear.

[0012] The limiting assembly comprises a first limiting piece and a second limiting piece. The first limiting piece and the second limiting piece are detachably connected to the transmission rod. The driving bevel gear is stopped by the first limiting piece and the second limiting piece.

[0013] As an alternative to the ground knife switch, the first limiting member comprises:

[0014] a first limiting half-ring;

[0015] a first clamping hoop, a first end of the first limiting half-ring being connected to an annular wall of the first clamping hoop, the first clamping hoop being sleeved on the transmission rod and located above the driven bevel gear.

[0016] As an alternative to the ground knife switch, the first limiting member further comprises:

[0017] a second clamping hoop, a second end of the first limiting half-ring being connected to an annular wall of the second clamping hoop, the second clamping hoop being sleeved on the transmission rod and located below the driven bevel gear.

[0018] As an alternative to the ground knife switch, the second limiting member comprises:

[0019] a second limiting half-ring;

[0020] a third clamping hoop, a first end of the second limiting half-ring being connected to an annular wall of the third clamping hoop, the third clamping hoop being sleeved on the transmission rod and located above the driven bevel gear.

[0021] As an alternative to the ground knife switch, the second limiting member further comprises:

[0022] a fourth clamping hoop, a second end of the second limiting half-ring being connected to an annular wall of the fourth clamping hoop, the fourth clamping hoop being sleeved on the transmission rod and located below the driven bevel gear.

[0023] As an alternative to the ground knife switch, the drive assembly further comprises:

[0024] an operation handle, the operation handle being detachably connected to the driving bevel gear.

[0025] As an alternative to the ground knife switch, one end of the operation handle is provided with a socket, a plug pin is coaxially arranged at an axial center of the driving bevel gear, and the plug pin is inserted into the socket.

[0026] As an alternative to the ground knife switch, the socket is a square hole.

[0027] As an alternative to the ground knife switch, a sleeve is coaxially arranged on the driving bevel gear, and the plug pin is located in the sleeve.

[0028] As an alternative to the ground knife switch, an outer wall surface of the operation handle is provided with an anti-slip structure; and / or

[0029] The grounding knife switch further comprises a protective shell having a containing cavity, and the driven bevel gear, the driving bevel gear, the first limiting piece and the second limiting piece are located in the protective shell.

[0030] Compared with the prior art, the grounding knife switch has the following beneficial effects:

[0031] The grounding knife switch provided by the utility model, in the upper half part of the transmission rod, is connected with the rotating rod of the knife switch assembly through the connecting rod assembly, and the rotating transmission rod can drive the rotating rod to open or close the moving contact and the static contact. The driven bevel gear of the driving assembly is installed on the transmission rod, and the transmission rod can be driven to rotate through the driving bevel gear. The first limiting piece and the second limiting piece are detachably connected on the transmission rod, on the one hand, the rotation range of the driving bevel gear is limited by the interval between the first limiting piece and the second limiting piece, the rotation stroke of the transmission rod during opening and closing can be controlled, and the accuracy and safety of closing and opening are ensured, and on the other hand, the interval between the first limiting piece and the second limiting piece can be adjusted, different rotation ranges of the driving bevel gear can be met, and various application scenarios can be adapted. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the drawings needed to be used in the following description of the embodiments of the utility model will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the contents of the embodiments of the utility model and the drawings for the ordinary skilled in the art without paying creative labor.

[0033] Fig. 1 It is the assembly diagram of the upper half part of the grounding knife switch in the embodiments of the utility model;

[0034] Fig. 2 It is the structural diagram of the lower half part of the grounding knife switch in the embodiments of the utility model;

[0035] Fig. 3 It is the explosion diagram of the lower half part of the grounding knife switch in the embodiments of the utility model.

[0036] REFERENCE SIGNS:

[0037] 1, knife switch assembly; 2, transmission rod; 3, driving assembly; 4, limiting assembly; 5, connecting rod assembly;

[0038] 11, moving contact; 12, rotating rod;

[0039] 31, driven bevel gear; 32, driving bevel gear; 321, bolt; 322, sleeve; 33, operation handle; 331, insertion hole;

[0040] 41, first limiting member; 411, first limiting half ring; 412, first clamping hoop; 413, second clamping hoop; 42, second limiting member; 421, second limiting half ring; 422, third clamping hoop; 423, fourth clamping hoop;

[0041] 51, first connecting rod member; 52, second connecting rod member; 53, third connecting rod member; 54, rotating shaft. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0043] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships in which the product of the present application is usually placed during use, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third", etc. are only used for differentiation in description and cannot be understood as indicating or implying relative importance. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0044] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided", "connected" should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, in which the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0046] In order to be able to control the rotating stroke of the transmission rod during the opening and closing process, and to ensure the accuracy and safety of the closing and opening, the present embodiment provides a grounding knife switch, which will be described below in combination withFigs. 1 to 3 The specific content of the present embodiment is described in detail.

[0047] The grounding knife switch in the present embodiment comprises a knife switch assembly 1, a transmission rod 2, a driving assembly 3 and a limiting assembly 4. The knife switch assembly 1 comprises a plurality of moving contacts 11 and a rotating rod 12, and one end of each of the moving contacts 11 is fixedly arranged on the rotating rod 12. The transmission rod 2 is in transmission connection with the rotating rod 12 through a connecting rod assembly 5, and rotating the transmission rod 2 can drive the rotating rod 12 to drive the moving contacts 11 to open or close with the static contacts. The driving assembly 3 comprises a driven bevel gear 31 and a driving bevel gear 32, the driven bevel gear 31 is fixedly sleeved on the transmission rod 2, and the driving bevel gear 32 is in meshing connection with the driven bevel gear 31. The limiting assembly 4 comprises a first limiting piece 41 and a second limiting piece 42, and the first limiting piece 41 and the second limiting piece 42 are in detachable connection with the transmission rod 2, and the driving bevel gear 32 is stopped by the first limiting piece 41 and the second limiting piece 42. Specifically, the connecting rod assembly 5 comprises a first connecting rod piece 51, a second connecting rod piece 52 and a third connecting rod piece 53, the first end of the first connecting rod piece 51 is fixedly connected with the rotating rod 12, the first end of the second connecting rod piece 52 is hingedly connected with the second end of the first connecting rod piece 51, the third connecting rod piece 53 is fixedly sleeved on the transmission rod 2, and a rotating shaft 54 is rotatably arranged on the third connecting rod piece 53, and the upper end of the rotating shaft 54 is hingedly connected with the second end of the second connecting rod piece 52.

[0048] Briefly, the grounding knife switch provided by the present embodiment is in transmission connection with the rotating rod 12 of the knife switch assembly 1 through the connecting rod assembly 5 at the upper half of the transmission rod 2, and rotating the transmission rod 2 can drive the rotating rod 12 to drive the moving contacts 11 to open or close with the static contacts. The driven bevel gear 31 of the driving assembly 3 is installed on the transmission rod 2, and the driving bevel gear 32 can drive the transmission rod 2 to rotate. The first limiting piece 41 and the second limiting piece 42 are in detachable connection with the transmission rod 2, on the one hand, the rotating range of the driving bevel gear 32 is limited by the interval between the first limiting piece 41 and the second limiting piece 42, which can control the rotating stroke of the transmission rod 2 during the opening and closing process, and ensure the accuracy and safety of the closing and opening; on the other hand, by adjusting the interval between the first limiting piece 41 and the second limiting piece 42, the different rotating ranges of the driving bevel gear 32 can be met, and various application scenarios can be adapted.

[0049] Further, the first limiting piece 41 comprises a first limiting half ring 411 and a first clamp 412, the first end of the first limiting half ring 411 is connected with the annular wall of the first clamp 412, and the first clamp 412 is sleeved on the transmission rod 2 and located above the driven bevel gear 31. The first clamp 412 can quickly assemble and disassemble the first end of the first limiting half ring 411 with the transmission rod 2.

[0050] Further, the first limiting member 41 further comprises a second clamping hoop 413, the second end of the first limiting half ring 411 is connected with the annular wall of the second clamping hoop 413, the second clamping hoop 413 is sleeved on the transmission rod 2 and is located below the driven bevel gear 31. The second clamping hoop 413 can quickly assemble and disassemble the second end of the first limiting half ring 411 with the transmission rod 2.

[0051] Further, the second limiting member 42 comprises a second limiting half ring 421 and a third clamping hoop 422, the first end of the second limiting half ring 421 is connected with the annular wall of the third clamping hoop 422, the third clamping hoop 422 is sleeved on the transmission rod 2 and is located above the driven bevel gear 31. The third clamping hoop 422 can quickly assemble and disassemble the first end of the second limiting half ring 421 with the transmission rod 2.

[0052] Further, the second limiting member 42 further comprises a fourth clamping hoop 423, the second end of the second limiting half ring 421 is connected with the annular wall of the fourth clamping hoop 423, the fourth clamping hoop 423 is sleeved on the transmission rod 2 and is located below the driven bevel gear 31. The fourth clamping hoop 423 can quickly assemble and disassemble the second end of the second limiting half ring 421 with the transmission rod 2.

[0053] Optionally, the drive assembly 3 further comprises an operation handle 33, the operation handle 33 is detachably connected with the driving bevel gear 32. When it is needed to drive the driving bevel gear 32 to rotate, the operation handle 33 is connected with the driving bevel gear 32 together, manual operation is adopted to realize opening and closing. When it is not needed to drive the driving bevel gear 32 to rotate, the operation handle 33 is separated from the driving bevel gear 32.

[0054] Illustratively, one end of the operation handle 33 is provided with a insertion hole 331, the insertion hole 331 is coaxially provided with a insertion pin 321 on the driving bevel gear 32, the insertion pin 321 is inserted into the insertion hole 331. The insertion pin 321 and the insertion hole 331 can be quickly assembled together.

[0055] Preferably, the insertion hole 331 is a square hole, the cross section of the insertion pin 321 is square, when the insertion pin 321 is inserted into the insertion hole 331, the insertion pin 321 can be prevented from rotating relative to the insertion hole 331.

[0056] Further, the driving bevel gear 32 is coaxially provided with a sleeve 322, the insertion pin 321 is located in the sleeve 322. The sleeve 322 is provided on the periphery of the insertion pin 321, which improves the appearance.

[0057] Further, the outer wall surface of the operating handle 33 is provided with an anti-skid structure; and / or the grounding knife switch further comprises a protective shell, the protective shell has a containing cavity, the driven bevel gear 31, the driving bevel gear 32, the first limiting piece 41 and the second limiting piece 42 are all located in the protective shell. By additionally adding the anti-skid structure, hand slip when rotating the operating handle 33 is avoided. By additionally adding the protective shell, corrosion of the driven bevel gear 31, the driving bevel gear 32, the first limiting piece 41 and the second limiting piece 42 is avoided, and the functions of rust prevention and dust prevention are achieved. In some application scenarios, the protective shell can be designed as two shells that can be buckled with each other.

[0058] It should be noted that the above are only the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. Grounding disconnector, characterized in that The utility model relates to a circuit breaker, which comprises a knife switch assembly (1) including a plurality of movable contacts (11) and a rotating rod (12), one end of each of the movable contacts (11) being fixedly arranged on the rotating rod (12); a transmission rod (2) which is in transmission connection with the rotating rod (12) through a connecting rod assembly (5), and rotation of the transmission rod (2) can drive the rotating rod (12) to drive the movable contacts (11) to be separated from or combined with static contacts; a driving assembly (3) including a driven bevel gear (31) and a driving bevel gear (32), the driven bevel gear (31) being fixedly sleeved on the transmission rod (2), and the driving bevel gear (32) being in meshing connection with the driven bevel gear (31); a limiting assembly (4) including a first limiting member (41) and a second limiting member (42), the first limiting member (41) and the second limiting member (42) being detachably connected with the transmission rod (2), and the driving bevel gear (32) being stopped by the first limiting member (41) and the second limiting member (42). The first limiting member (41) comprises a first limiting half ring (411) and a first clamping hoop (412), the first end of the first limiting half ring (411) being connected with the annular wall of the first clamping hoop (412), the first clamping hoop (412) being sleeved on the transmission rod (2) and located above the driven bevel gear (31). The first limiting member (41) further comprises a second clamping hoop (413), the second end of the first limiting half ring (411) being connected with the annular wall of the second clamping hoop (413), the second clamping hoop (413) being sleeved on the transmission rod (2) and located below the driven bevel gear (31). The second limiting member (42) comprises a second limiting half ring (421) and a third clamping hoop (422), the first end of the second limiting half ring (421) being connected with the annular wall of the third clamping hoop (422), the third clamping hoop (422) being sleeved on the transmission rod (2) and located above the driven bevel gear (31). The second limiting member (42) further comprises a fourth clamping hoop (423), the second end of the second limiting half ring (421) being connected with the annular wall of the fourth clamping hoop (423), the fourth clamping hoop (423) being sleeved on the transmission rod (2) and located below the driven bevel gear (31).

2. The grounding switch according to claim 1, characterized in that The driving assembly (3) further comprises an operation handle (33) which is detachably connected with the driving bevel gear (32). One end of the operation handle (33) is provided with a socket (331), and the driving bevel gear (32) is coaxially provided with a bolt (321) at the shaft center, the bolt (321) being inserted into the socket (331). The socket (331) is a square hole.

3. The grounding link of claim 2, wherein, The driving bevel gear (32) is coaxially provided with a sleeve, and the bolt (321) is located in the sleeve. The outer wall surface of the operation handle (33) is provided with an anti-skid structure; and / or 4. The grounding gap of claim 1, wherein, ​ ​ ​ 5. The grounding link of claim 4, wherein, ​ ​ 6. The grounding gap of claim 1, wherein, ​ ​ 7. The grounding gap of claim 6, wherein, ​ 8. The grounding link claimed in claim 7, characterized in that ​ 9. The grounding gap of claim 7, wherein, ​ 10. The grounding gap of claim 7, wherein, ​ The grounding knife switch further comprises a protective cover shell having a containing cavity, the driven bevel gear (31), the driving bevel gear (32), the first limiting piece (41) and the second limiting piece (42) are all located in the protective cover shell.

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