Single-phase contact clamp and bus rapid grounding switch

Abstract

The embodiment of the utility model provides a single-phase contact clamp and a bus quick grounding switch. The single-phase contact clamp comprises an insulating operating rod and a gripper type conductive clamp, the tail part of the insulating operating rod is provided with a hand-held device used for setting the opening and closing state of the gripper type conductive clamp. The head part of the insulating operating rod is connected with the gripper type conductive clamp; and the handheld device is connected with the gripper type conductive clamp.

Description

TECHNICAL FIELD

[0001] The utility model relates to high -voltage distribution safety technical field especially, relates to a single -phase contact clamp and busbar quick grounding switch. BACKGROUND

[0002] Traditional high -voltage grounding switch is also called high -voltage grounding wire, and the structure includes insulating operating rod, grounding clamp, wire clamp, bus clamp, short circuit wire, grounding wire etc., and the traditional high -voltage grounding wire grounding clamp and wire clamp need to be manually adjusted opening degree and tightness, and the insulating operating rod needs to be manually rotated, and the tightness of the traditional high -voltage grounding wire grounding clamp or conducting clamp is suitable for the grounding equipment of plane structure.

[0003] In the implementation of the utility model, the applicant finds that at least the following problems exist in the prior art:

[0004] The conducting clamp of the traditional high -voltage grounding switch is not suitable for the high -voltage equipment of curved surface structure, and cannot be efficiently and reliably clamped. INVENTION CONTENTS

[0005] The utility model embodiment provides a single -phase contact clamp and busbar quick grounding switch, solve the problem that the conducting clamp of traditional high -voltage grounding switch is not suitable for the high -voltage equipment of curved surface structure, and cannot be reliably clamped.

[0006] To achieve the above purpose, on the one hand, the utility model embodiment provides a single -phase contact clamp, which comprises: insulating operating rod, grab hand type conducting clamp and hand gripping device;

[0007] The hand gripping device is arranged at the tail of the insulating operating rod;

[0008] The head of the insulating operating rod is connected with the grab hand type conducting clamp;

[0009] The hand gripping device is connected with the grab hand type conducting clamp;

[0010] The grab hand type conducting clamp has two working state positions of open state and closed state, the open state is the state that the grab hand type conducting clamp is opened, and the closed state is the state that the grab hand type conducting clamp is gathered and tightened.

[0011] Further, the grab hand type conducting clamp comprises: hollow conical frustum type grab hand seat, at least 3 groups of connecting rod devices;

[0012] One end of the conical frustum type grab hand seat is large circular ring section, and the other end is small circular ring section;

[0013] The small circular ring section of the grab hand seat is connected with the insulating operating rod;

[0014] The at least 3 groups of connecting rod devices are evenly arranged along the circumferential direction of the large circular ring section of the grab hand seat.

[0015] The linkage device includes: a first link, a second link, a third link, a fourth link, and a fifth link;

[0016] The first connecting rod is perpendicular to the large annular cross-section of the gripper base and is fixedly connected to the large annular cross-section of the gripper base;

[0017] The second link is arranged above the first link, and the intersection of the second link and the first link is connected by a hinge. One end of the second link is connected to the upper end of the fourth link, and the other end of the second link is connected to the upper end of the fifth link.

[0018] The third link is intersected and disposed below the first link, and the intersection of the third link and the first link is hinged and rotatably connected. One end of the third link is connected to the lower end of the fourth link, and the other end of the third link is connected to the lower end of the fifth link.

[0019] The second link and the third link are parallel to each other;

[0020] The fourth link, the fifth link, and the first link are parallel to each other, and the fourth link and the fifth link are respectively located on both sides of the first link. The fourth link is located on the inner side of the gripper base, and the fifth link is located on the outer side of the gripper base.

[0021] At least one first spring is connected between the fourth links of adjacent links in the at least three sets of linkages.

[0022] The outer side of the gripper base is provided with a first terminal post, and the middle of the first terminal post is provided with a first radial wiring hole. The first terminal post is axially threaded with a first wiring bolt, and the first wiring bolt passes through the first terminal post from the top of the first terminal post along the axial direction of the first terminal post and enters the first radial wiring hole.

[0023] The gripping device rests on the inner side of the third link in each linkage assembly, and the gripping device can translate back and forth along the axial direction of the gripper seat.

[0024] Furthermore, the insulating operating rod has a hollow structure; the hand grip device includes: a push rod, a sixth link, and a seventh link;

[0025] The push rod is sleeved inside the hollow insulating operating rod in a sliding manner along the longitudinal direction of the insulating operating rod;

[0026] The head end of the push rod rests against the inside of the third link in each linkage assembly;

[0027] The tail end of the push rod is located at the tail of the insulated operating rod;

[0028] The insulated operating rod is provided with a long strip-shaped gap in the axial direction;

[0029] One end of the seventh connecting rod is rotationally connected to the tail of the insulated operating rod, the other end of the seventh connecting rod is towards the head of the insulated operating rod, the seventh connecting rod is inclined along the axial direction of the insulated operating rod and forms an acute angle with the insulated operating rod, the other end of the seventh connecting rod is rotationally connected to one end of the sixth connecting rod, the sixth connecting rod forms an obtuse angle with the seventh connecting rod, and the other end of the sixth connecting rod is rotationally connected to the tail end of the push rod through the long strip-shaped gap;

[0030] The push rod, the sixth connecting rod and the seventh connecting rod are made of insulating material.

[0031] Further, the single-phase contact clamp further comprises a cylindrical elastic protective cover sleeved outside the claw-shaped conductive clamp.

[0032] Further, the single-phase contact clamp further comprises a cylindrical elastic protective cover; the cylindrical elastic protective cover is sleeved outside all the connecting rod devices in a constricted state. Specifically, the cylindrical elastic protective cover is sleeved outside all the fifth connecting rods in a constricted state.

[0033] On the other hand, the utility model provides a kind of bus quick grounding switch, comprising: at least one of any one single-phase contact clamp described above, at least one grounding clamp and the grounding wire with insulating sheath;

[0034] The grounding clamp is electrically connected with the claw-shaped conductive clamp on the single-phase contact clamp by the grounding wire with insulating sheath.

[0035] Further, a cylindrical elastic protective cover is sleeved outside the claw-shaped conductive clamp on each single-phase contact clamp in a constricted state, and all the cylindrical elastic protective covers are connected by connecting plates into linear distribution or circular distribution.

[0036] Further, the grounding clamp comprises a first clamp plate, a second clamp plate, a second spring, a first insulating plate and a second insulating plate.

[0037] The first clamp plate and the second clamp plate are arranged in V shape, and the middle part is rotationally connected.

[0038] The head of the first clamp plate and the second clamp plate near the sharp side of the V shape is provided with a sawtooth structure that engages each other.

[0039] The second spring is arranged near one side of the V-shaped opening at the hinge, one end of the second spring is connected to the lower side of the first clamping plate, and the other end of the second spring is connected to the upper side of the second clamping plate;

[0040] The first insulating plate is connected to the tail of the first clamping plate on the side facing the V-shaped opening, and the second insulating plate is connected to the tail of the second clamping plate on the side facing the V-shaped opening;

[0041] The second terminal post is arranged on the first clamping plate, a second radial terminal hole is radially arranged in the middle of the second terminal post, and a second terminal screw is axially threadedly connected to the second terminal post, and the second terminal screw penetrates into the second radial terminal hole from the top end of the second terminal post along the axial direction of the second terminal post;

[0042] One end of the grounding wire is inserted into the second radial terminal hole and locked by the second terminal screw, and the other end is connected to the grab-type conductive clamp on each single-phase contact clamp.

[0043] The above technical scheme has the following beneficial effects: by applying the hand grab-type conductive clamp, the moving contact or the stationary contact of the curved surface structure is clamped after the hand grab-type conductive clamp is closed, so that the problem that the traditional high-voltage grounding switch cannot quickly and firmly clamp the device and facility with the curved surface structure is solved, and manual slow adjustment and clamping are not needed, thereby realizing the technical effect of quickly clamping the curved surface structure. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0045] Figure 1 is a perspective structural schematic view of a single-phase contact clamp according to one of the embodiments of the present application;

[0046] Figure 2 is an assembly front view of an insulating operating rod and a hand gripping device of a single-phase contact clamp according to one of the embodiments of the present application;

[0047] Figure 3 is an assembly left view of an insulating operating rod and a hand gripping device of a single-phase contact clamp according to one of the embodiments of the present application;

[0048] Figure 4 is an assembly bottom view of an insulating operating rod and a hand gripping device of a single-phase contact clamp according to one of the embodiments of the present application;

[0049] Figure 5 is a front view of a grabber type conductive clamp of a single phase contact clamp according to an embodiment of the present invention;

[0050] Figure 6 is a top view of a grabber type conductive clamp of a single phase contact clamp according to an embodiment of the present invention;

[0051] Figure 7 is a right view of a grabber type conductive clamp of a single phase contact clamp according to an embodiment of the present invention;

[0052] Figure 8 is a B-B sectional view of a grabber type conductive clamp of a single phase contact clamp according to an embodiment of the present invention;

[0053] Figure 9 is an A-A sectional view of a grabber type conductive clamp of a single phase contact clamp according to an embodiment of the present invention;

[0054] Figure 10 is a front view of a single phase contact clamp with a cylindrical protective cover according to an embodiment of the present invention;

[0055] Figure 11 is a top view of a single phase contact clamp with a cylindrical protective cover according to an embodiment of the present invention;

[0056] Figure 12 is a single phase structure schematic view of a busbar quick grounding switch according to an embodiment of the present invention;

[0057] Figure 13 is a C partial enlarged view of a front view of a 3-phase structure of a busbar quick grounding switch according to an embodiment of the present invention;

[0058] Figure 14 is a front view of a 3-phase structure of a busbar quick grounding switch according to an embodiment of the present invention;

[0059] Figure 15 is a top view of a 3-phase structure of a busbar quick grounding switch according to an embodiment of the present invention;

[0060] Figure 16 is a perspective schematic view of a 3-phase structure of a busbar quick grounding switch according to an embodiment of the present invention;

[0061] Figure 17 is another perspective schematic view of a 3-phase structure of a busbar quick grounding switch according to an embodiment of the present invention;

[0062] Figure 18 is another perspective schematic view of a 3-phase structure of a busbar quick grounding switch according to an embodiment of the present invention;

[0063] Figure 19 This is another three-dimensional schematic diagram of a three-phase structure of a busbar fast grounding switch, which is one embodiment of the present invention;

[0064] Figure 20 This is a front view of the grounding clamp of a busbar fast grounding switch according to one embodiment of the present invention;

[0065] Figure 21 This is a top view of the grounding clamp of a busbar fast grounding switch according to one embodiment of the present invention;

[0066] Figure 22 This is a right view of the grounding clamp of a busbar fast grounding switch according to one embodiment of the present invention;

[0067] Figure 23 This is a DD cross-sectional view on the right side of the grounding clamp of a busbar fast grounding switch, which is one embodiment of the present invention.

[0068] The reference numerals in the attached drawings are as follows: 1. Insulated operating rod; 2. Grip-type conductive clamp; 3. Hand gripping device; 21. Grip base; 22. Linkage device; 221. First link; 222. Second link; 223. Third link; 224. Fourth link; 225. Fifth link; 226. First spring; 227. First connecting bolt; 228. First terminal; 229. First radial wiring hole; 31. Push rod; 32. Sixth link; 33. Seventh link; 11. Long strip-shaped gap; 4. Cylindrical protective cover; 6. Grounding clamp; 7. Grounding wire; 8. Connecting plate; 61. First clamping plate; 62. Second clamping plate; 63. Second spring; 64. First insulating plate; 65. Second insulating plate; 66. Second terminal; 67. Second radial wiring hole; 68. Second connecting bolt. Detailed Implementation

[0069] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0070] On the one hand, such as Figure 1 As shown, an embodiment of the present invention provides a single-phase contact clamp, including: an insulating operating rod 1, a gripper-type conductive clamp 2, and a hand-holding device 3;

[0071] The hand grip device 3 is located at the tail of the insulating operating rod 1;

[0072] The head of the insulating operating rod 1 is connected to the gripper-type conductive clamp 2;

[0073] The hand gripping device 3 is connected to the pincer-shaped conductive clamp 2;

[0074] The pincer-shaped conductive clamp 2 has two working state positions, i.e., an open state and a closed state. The open state is a state in which the pincer-shaped conductive clamp 2 is opened, and the closed state is a state in which the pincer-shaped conductive clamp 2 is gathered and tightened. The pincer-shaped conductive clamp 2 is made of a conductive material.

[0075] In some embodiments, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the tail of the insulating operating rod 1 is provided with a hand gripping device 3 for setting the open and closed states of the pincer-shaped conductive clamp 2. The pincer-shaped conductive clamp 2 is operated in a gripping or loosening manner by operating the hand gripping device. For example, when the hand gripping device 3 is loosened, the pincer-shaped conductive clamp 2 is in the closed state, and when the hand gripping device 3 is gripped, the pincer-shaped conductive clamp 2 is in the open state. In use, the hand gripping device 3 is first gripped, the pincer-shaped conductive clamp 2 is kept in the open state, the tail of the insulating operating rod 1 is held, the pincer-shaped conductive clamp 2 is aligned with the contact, the contact is located inside the pincer-shaped conductive clamp 2, the hand gripping device 3 is loosened, and the pincer-shaped conductive clamp 2 is switched to the closed state, thereby clamping the contact.

[0076] The embodiments of the present application have the following technical effects: by applying the hand pincer-shaped conductive clamp, the moving contact or the static contact of the curved structure is clamped after the pincer-shaped conductive clamp is gathered in the closed state, thereby solving the problem that the traditional high-voltage grounding switch cannot quickly and firmly clamp the device with the curved structure, and the device has to be manually adjusted and clamped slowly, thereby realizing the technical effect of quickly clamping the curved structure.

[0077] Further, as shown in Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 , the pincer-shaped conductive clamp 2 comprises an inner hollow conical frustum-shaped pincer seat 21 and at least three groups of connecting rod devices 22.

[0078] One end of the conical frustum-shaped pincer seat 21 is a large circular ring cross section, and the other end is a small circular ring cross section.

[0079] The small circular ring cross section of the pincer seat 21 is connected to the insulating operating rod 1.

[0080] The at least three groups of connecting rod devices 22 are uniformly arranged along the circumferential direction of the large circular ring cross section of the pincer seat 21.

[0081] The connecting rod device 22 comprises a first connecting rod 221, a second connecting rod 222, a third connecting rod 223, a fourth connecting rod 224, and a fifth connecting rod 225.

[0082] The first connecting rod 221 is perpendicular to the large circular ring section of the grab seat 21 and is fixedly connected to the large circular ring section of the grab seat 21;

[0083] The second connecting rod 222 is arranged at the upper portion of the first connecting rod 221 and is rotatably connected to the first connecting rod 221 at the intersection point through a hinge, one end of the second connecting rod 222 is connected to the upper end of the fourth connecting rod 224, and the other end of the second connecting rod 222 is connected to the upper end of the fifth connecting rod 225;

[0084] The third connecting rod 223 is arranged at the lower portion of the first connecting rod 221 and is rotatably connected to the first connecting rod 221 at the intersection point through a hinge, one end of the third connecting rod 223 is connected to the lower end of the fourth connecting rod 224, and the other end of the third connecting rod 223 is connected to the lower end of the fifth connecting rod 225;

[0085] The second connecting rod 222 and the third connecting rod 223 are parallel to each other;

[0086] The fourth connecting rod 224, the fifth connecting rod 225 and the first connecting rod 221 are parallel to each other, and the fourth connecting rod 224 and the fifth connecting rod 225 are arranged on both sides of the first connecting rod 221, the fourth connecting rod 224 is arranged on the inner side of the grab seat 21, and the fifth connecting rod 225 is arranged on the outer side of the grab seat 21;

[0087] At least one first spring 226 is connected between the fourth connecting rods 224 in adjacent connecting rod devices 22 in the at least 3 groups of connecting rod devices 22;

[0088] A first terminal stud 228 is arranged on the outer side of the grab seat 21, a first radial terminal hole 229 is arranged in the middle portion of the first terminal stud 228 in the radial direction, a first terminal bolt 227 is axially threadedly connected to the first terminal stud 228, and the first terminal bolt 227 penetrates into the first radial terminal hole 229 from the top end of the first terminal stud 228 along the axial direction of the first terminal stud 228; the first terminal bolt 227 is used for connecting a grounding wire;

[0089] As shown in Figure 1 The hand gripping device 3 is arranged on the inner side of the third connecting rod 223 in each connecting rod device 22, and the hand gripping device 3 can translate forward and backward along the axial direction of the grab seat 21; the grab seat 21, the first terminal stud 228 and the connecting rod device 22 are made of conductive material, and the hand gripping device 3 is made of insulating material.

[0090] In some embodiments, the connecting rod device 22 is in a parallelogram structure. When pressure is applied to one end of the handgrip device 3, for example, when the handgrip device 3 is squeezed, the handgrip device 3 moves along the axis of the holder 21 towards the contact side. The third connecting rod 223 is subjected to an outwardly directed pushing force from the handgrip device 3. The angle between the third connecting rod 223 and the first connecting rod 221 decreases. The second connecting rod moves synchronously with the third connecting rod. The second connecting rod and the third connecting rod together move the fourth connecting rod outwardly or towards the first connecting rod. The first spring 226 is stretched. The central space surrounded by all the fourth connecting rods becomes larger. The insulating operating rod 1 allows the contact to be covered in the central space surrounded by all the fourth connecting rods. When the handgrip device 3 is released, the first spring 226 is reset. All the fourth connecting rods are pulled back to the center. The central space surrounded by all the fourth connecting rods becomes smaller. All the fourth connecting rods clamp the contact from different directions. When the fourth connecting rod is reset, the third connecting rod is also reset. The third connecting rod pushes the handgrip device 3 to reset, i.e. to move along the axis of the holder 21 away from the contact. The ground wire is inserted into the first radial wire hole 229. The first wire bolt 227 is tightened. The first wire bolt 227 radially presses the ground wire. Preferably, the holder 21 has a large circular ring section with a notch that cooperates with the third connecting rod 223. When the third connecting rod 223 is installed close to the large circular ring section of the holder 21, the notch provides a swinging space for the third connecting rod 223. The third connecting rod 223 can also be installed as far away from the large circular ring section of the holder 21 as possible. Even if the holder 21 does not have a notch in the large circular ring section, the swinging of the third connecting rod 223 will not interfere with the large circular ring section of the holder 21. However, the first connecting rod 221 needs to be longer in this case.

[0091] The embodiment of the present application has the following technical effects: At least three connecting rod devices lock the contact from at least three different directions, increasing the clamping stability. It can also adapt to contacts of different radii and different curved surfaces, such as but not limited to cylindrical surfaces or square columns. Since the fourth connecting rods are connected by the first spring, the reset distance of each fourth connecting rod can be different. Different reset distances of the fourth connecting rods from different directions adapt to the surface of the contact, thereby more stably clamping contacts of various shapes.

[0092] Further, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the insulating operating rod 1 is a hollow structure. The handgrip device 3 includes a push rod 31, a sixth connecting rod 32, and a seventh connecting rod 33.

[0093] The push rod 31 is sleeved in the hollow structure of the insulated operating rod 1 in a sliding mode along the longitudinal direction of the insulated operating rod 1;

[0094] The head end of the push rod 31 is located on the inner side of the third connecting rod 223 in each connecting rod device 22;

[0095] The tail end of the push rod 31 is located at the tail of the insulated operating rod 1;

[0096] The insulated operating rod 1 is provided with a long strip-shaped gap 11 in the axial direction;

[0097] One end of the seventh connecting rod 33 is rotationally connected to the tail of the insulated operating rod 1, the other end of the seventh connecting rod 33 is directed to the head of the insulated operating rod 1, the seventh connecting rod 33 is inclined along the axial direction of the insulated operating rod 1 and forms an acute angle with the insulated operating rod 1, the other end of the seventh connecting rod 33 is rotationally connected to one end of the sixth connecting rod 32, the sixth connecting rod 32 forms an obtuse angle with the seventh connecting rod 33, and the other end of the sixth connecting rod 32 is rotationally connected to the tail end of the push rod 31 through the long strip-shaped gap 11;

[0098] The push rod 31, the sixth connecting rod 32 and the seventh connecting rod 33 are made of insulating materials.

[0099] In some embodiments, by pressing the seventh connecting rod 33 at the tail of the insulated operating rod 1, the seventh connecting rod 33 pushes the sixth connecting rod 32, the sixth connecting rod 32 pushes the push rod 31 to translate along the axial center of the insulated operating rod 1 to the head of the insulated operating rod 1, so that the head end of the push rod 31 pushes the third connecting rod 223 in each connecting rod device 22 to move, causing the fourth connecting rod 224 to translate outward (while the first spring 226 is stretched), the space in the center of the grab-type conductive clamp 2 is enlarged, and the state of the grab-type conductive clamp 2 changes to the open state. When it is intended to clamp the contact, the hand holding device 3 can be gripped with one hand, at this time the grab-type conductive clamp 2 is in the open state, the insulated operating rod 1 is lifted to make the grab-type conductive clamp 2 align and cover the contact, and the hand holding device 3 is released. Under the action of the restoring force of the first spring 226, the fourth connecting rod 224 translates inward, drives the third connecting rod 223 to move, and the third connecting rod 223 pushes the push rod 31 to move to the tail of the insulated operating rod 1, at this time the grab-type conductive clamp 2 is in the closed state, and the clamping of the contact is completed. Wherein, the head of the insulated operating rod 1 is defined as the end close to the grab-type conductive clamp 2, and the tail of the insulated operating rod 1 is defined as the end away from the grab-type conductive clamp 2.

[0100] The embodiment of the application has the following technical effects: the hand holding device 3 has a simple structure and is easy to maintain, and the operation of the insulated operating rod 1 and the clamping process are combined into one action, so that efficient and stable clamping is achieved.

[0101] Further, the single-phase contact clamp further comprises a cylindrical elastic protective cover sleeved outside the claw-type conductive clamp.

[0102] In some embodiments, the cylindrical elastic protective cover 4 is sleeved outside the claw-type conductive clamp 2 in a constricted state. As shown in Figure 10 and Figure 11 The claw-type conductive clamp 2 can be protected from impact damage by the cylindrical elastic protective cover 4. The cylindrical elastic protective cover 4 is made of an elastic material, such as but not limited to elastic rubber. The cylindrical elastic protective cover 4 is sleeved outside the claw-type conductive clamp 2 in a constricted state, and in a normal state (or in an idle state or when the hand-held device 3 is not subjected to a gripping force), the claw-type conductive clamp 2 is constrained to be in a closed state. When the claw-type conductive clamp 2 is in an open state, the cylindrical elastic protective cover 4 is in a stretched state due to being stretched by the claw-type conductive clamp 2, thereby providing a contraction force for compressing the claw-type conductive clamp 2 from the open state to the closed state, and the contact can be clamped more tightly.

[0103] Further, the single-phase contact clamp further comprises a cylindrical elastic protective cover 4; the cylindrical elastic protective cover 4 is sleeved outside all the linkage devices 22 in a constricted state. Specifically, the cylindrical elastic protective cover 4 is sleeved outside all the fifth linkages 225 in a constricted state.

[0104] In some embodiments, the claw-type conductive clamp 2 can be protected from impact damage by the cylindrical elastic protective cover 4. The cylindrical elastic protective cover 4 is made of an elastic material, such as but not limited to elastic rubber. The cylindrical elastic protective cover 4 is sleeved outside the claw-type conductive clamp 2 in a constricted state, and in a normal state (or in an idle state or when the hand-held device 3 is not subjected to a gripping force), the claw-type conductive clamp 2 is constrained to be in a closed state. When the claw-type conductive clamp 2 is in an open state, the cylindrical elastic protective cover 4 is in a stretched state due to being stretched by the claw-type conductive clamp 2, thereby providing a contraction force for compressing the claw-type conductive clamp 2 from the open state to the closed state, and the contact can be clamped more tightly. Figure 10 and Figure 11 The claw-type conductive clamp 2 can be protected from impact damage by the cylindrical elastic protective cover 4. The cylindrical elastic protective cover 4 is made of an elastic material, such as but not limited to elastic rubber. The cylindrical elastic protective cover 4 is sleeved outside the claw-type conductive clamp 2 in a constricted state, and in a normal state (or in an idle state or when the hand-held device 3 is not subjected to a gripping force), the claw-type conductive clamp 2 is constrained to be in a closed state. When the claw-type conductive clamp 2 is in an open state, the cylindrical elastic protective cover 4 is in a stretched state due to being stretched by the claw-type conductive clamp 2, thereby providing a contraction force for compressing the claw-type conductive clamp 2 from the open state to the closed state, and the contact can be clamped more tightly.

[0105] In another aspect, the utility model provides a kind of bus quick grounding switch, comprising: at least one single-phase contact clamp as described above any one, at least one grounding clamp 6 and the grounding wire 7 with insulating sheath;

[0106] The grounding clamp 6 is electrically connected with the handgrip type conductive clamp 2 on the single-phase contact clamp through the insulated ground wire 7. Figure 12 The busbar quick grounding switch comprises a single-phase contact clamp, a grounding clamp 6 and an insulated ground wire 7, and the grounding clamp 6 is connected with the handgrip type conductive clamp 2 on the single-phase contact clamp through the ground wire 7. Figure 13 、 Figure 14 、 Figure 15 、 Figure 16 、 Figure 17 and Figure 19 The busbar quick grounding switch comprises three single-phase contact clamps, three grounding clamps 6 and three insulated ground wires 7, one single-phase contact clamp is connected with one grounding clamp 6 through an independent ground wire 7, forming three parallel grounding switches. Figure 18 The busbar quick grounding switch comprises three single-phase contact clamps, one grounding clamp 6 and one insulated ground wire 7 in a one-to-three form, the grounding clamp 6 is connected with the ground wire 7, and the three branches of the ground wire 7 are respectively connected with the handgrip type conductive clamps 2 of the three single-phase contact clamps. Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 、 Figure 16 、 Figure 17 、 Figure 18 and Figure 19 In the embodiment, some connection modes between the single-phase contact clamp, the grounding clamp 6 and the ground wire 7 are exemplified.

[0107] The embodiment has the following technical effects: by applying the handgrip type conductive clamp, the moving contact or the stationary contact of the curved surface structure is clamped after the handgrip type conductive clamp is closed, thereby solving the problem that the traditional high-voltage grounding switch cannot be quickly and firmly matched and clamped for the equipment and facilities with the curved surface structure, and the equipment and facilities have to be manually and slowly adjusted and clamped, thereby realizing the technical effect of quickly clamping the curved surface structure, and specifically, taking the maintenance of the high-voltage cabinet as an example, after the moving contact and the stationary contact of the high-voltage circuit breaker are separated, the PT cabinet high-voltage circuit breaker stationary contact needs to be grounded, the grounding time of the grounding clamp of the application is 1-2 seconds, the grounding clamp of the ordinary grounding switch needs 10-15 seconds, the single-phase grounding time of the conductive clamp of the application is 3-5 seconds, the conductive clamp of the ordinary grounding switch needs 25-45 seconds, and the grounding of the application is more reliable than that of the ordinary grounding switch.

[0108] Further, the outer side of the claw type conductive clamp 2 on each single-phase contact clamp is sleeved with a cylindrical elastic protective cover 4 in a constricted state, and all the cylindrical elastic protective covers 4 are connected into a linear distribution or a circular distribution through the connecting plate 8.

[0109] In some embodiments, the contact layout of multiple phases, for example, three phases, can be arranged along a straight line or uniformly arranged along a circumference, and the claw type conductive clamp 2 of the multiple single-phase contact clamps is connected into a contact layout style through the connecting plate 8, facilitating the grounding of the multiple-phase contact in one operation. As shown in Figure 15 and Figure 16 , three single-phase contact clamps are connected into a three-phase bus rapid grounding switch arranged in a straight line through the connecting plate 8 connecting the cylindrical elastic protective covers 4. As shown in Figure 19 , the connecting plate 8 is a circular ring, and the outer side of the cylindrical elastic protective cover 4 is connected with the inner side of the connecting plate 8, so as to fix the three single-phase contact clamps on the circumference formed by the connecting plate 8.

[0110] The embodiments of the present application have the following technical effects: the three single-phase contact clamps of the three-phase bus rapid grounding switch are arranged according to the layout of the three-phase contact, facilitating the rapid alignment of the three-phase contact and the rapid completion of the three-phase clamping grounding. Preferably, the connecting plate 8 is made of elastic insulating material, including but not limited to elastic rubber, and when there is a slight deviation between the three single-phase contact clamps of the bus rapid grounding switch and the layout of the three-phase contact, the alignment can be adjusted by the elasticity of the connecting plate 8.

[0111] Further, as shown in Figure 20 , Figure 21 , Figure 22 and Figure 23 , the grounding clamp 6 comprises a first clamp plate 61, a second clamp plate 62, a second spring 63, a first insulating plate 64 and a second insulating plate 65.

[0112] The first clamp plate 61 and the second clamp plate 62 are arranged in a V shape, and the middle part is hingedly connected in a rotating manner.

[0113] The head part of the first clamp plate 61 and the second clamp plate 62 near the sharp side of the V shape is provided with a sawtooth structure that engages with each other.

[0114] The second spring 63 is arranged near the V-shaped opening side at the hinge, one end of the second spring 63 is connected to the lower side of the first clamp plate 61, and the other end of the second spring 63 is connected to the upper side of the second clamp plate 62.

[0115] The first insulating plate 64 is connected to the tail part of the first clamp plate 61 towards the V-shaped opening side, and the second insulating plate 65 is connected to the tail part of the second clamp plate 62 towards the V-shaped opening side.

[0116] The first clamping plate 61 is provided with a second terminal post 66, a second radial terminal hole 67 is radially arranged in the middle of the second terminal post 66, and a second terminal bolt 68 is axially screwed to the second terminal post 66, and the second terminal bolt 68 penetrates into the second radial terminal hole 67 from the top end of the second terminal post 66 along the axial direction of the second terminal post 66;

[0117] One end of the grounding wire 7 is inserted into the second radial terminal hole 67 and locked and fixed by the second terminal bolt 68, and the other end is connected to the claw-shaped conductive clamp 2 on each single-phase contact clamp 6;

[0118] The first clamping plate 61 and the second clamping plate 62 are made of conductive material.

[0119] In some embodiments, the V-shaped grounding clamp 6 is used instead of the traditional hook-shaped grounding clamp, which is more convenient and efficient to operate.

[0120] The above technical solutions of the embodiments of the utility model will be described in detail below in combination with specific application examples, and the technical details not introduced in the implementation process can be referred to the related description in the foregoing.

[0121] For general or traditional high-voltage grounding switches, also known as high-voltage grounding wires, the structure includes an insulating operating rod, a grounding clamp, a wire clamp, a bus clamp, a short-circuit wire, a grounding wire, etc. The applicant finds the following significant defects: ① Inefficiency: The opening degree and tightness of the general or traditional high-voltage grounding wire grounding clamp and wire clamp need to be manually adjusted, and the insulating operating rod needs to be manually rotated. Both are slow in operation. ② Delay: The tightness of the general or traditional high-voltage grounding wire grounding clamp or conductive clamp is suitable for grounding equipment with a flat structure, but it cannot be quickly adapted to facilities with a curved structure and needs to be manually adjusted slowly. For devices with relatively large curvature, it is even more difficult to achieve firm clamping. For example, for the moving contact or static contact of a high-voltage circuit breaker, the inefficiency and delay of the general or traditional high-voltage grounding wire are particularly obvious.

[0122] The utility model solves the low efficiency and tardiness problem of high voltage grounding switch, provides a kind of quick grounding switch, it is also a bus grounding switch, especially for the obvious advantage of curved surface structure high voltage equipment.For the present situation that general high voltage grounding switch grounding clamp or conducting clamp is difficult to reliably clamp the curved surface structure high voltage equipment, the utility model single-phase conducting clamp adopts gripper structure to replace clamp structure, realizes the grounding of curved surface structure high voltage equipment fast clamp.The utility model is designed to replace rotary type by hand-held type, to realize the quickness of grounding switch.The technical scheme adopted by the utility model includes: design hand-held grounding switch insulating operating rod, to realize the quickness of grounding switch operation;Design gripper type grounding switch conducting clamp, to realize the efficiency and reliability of grounding switch grounding;Design connecting mechanism, to realize the stable connection of hand-held insulating operating rod and gripper type conducting clamp.

[0123] The utility model replaces rotary type insulating operating rod by hand-held insulating operating rod, replaces clamp structure type conducting clamp by gripper type conducting clamp, replaces clamp structure type grounding clamp by hand-held grounding clamp, realizes the connection of hand-held insulating operating rod and gripper type conducting clamp mechanism, achieves the effect that hand-held grounding clamp replaces clamp structure type grounding clamp to realize the quick grounding of grounding end, gripper type conducting clamp realizes the quick grounding of single-phase equipment, and hand-held insulating operating rod realizes the quick operation of single-phase grounding.

[0124] It should be understood that the specific order or hierarchy of steps in the processes disclosed should not be taken as a reflection of a method's preferred or essential steps. The specific order or hierarchy of steps in the processes can be re-arranged based on design preferences without departing from the scope of the present disclosure. The accompanying method claims present elements of the various steps in a sample order, and are not meant to be limited to the specific order or hierarchy presented.

[0125] In the above detailed description, various features are grouped together in single embodiments for the purpose of streamlining the disclosure. Such disclosed approaches should not be interpreted as reflecting an intention that the claimed embodiments require more features than are explicitly recited in each claim. On the contrary, as indicated previously, the inventive concept is intended to cover all modifications of this concept which fall within the scope of the claims. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate preferred embodiment.

[0126] The foregoing description of the exemplary embodiments includes the best mode known to the inventors of practicing the disclosed application. Of course, variations on described embodiments can become apparent to those of ordinary skill in the art once the nature of the application is understood. Accordingly, it is intended that the disclosure be subject to reasonable modification by any of these variations.

[0127] The foregoing description of one or more implementations has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the application to the precise form disclosed, and various modifications and variations are possible in light of the above teachings or can be acquired from practice of the application. The described implementations and / or examples were chosen and described to provide the best illustration of the principles of the application and its practical application and to enable one of ordinary skill in the art to other implementations and to understand the application for various implementations. Other implementations can be implemented with or without material departure from the scope of the present disclosure, and the scope of the disclosure should not be limited to these implementations. Further scope of the disclosure will become apparent from the full contents of the specification and drawings.

[0128] The above detailed description has shown, described and pointed out the aspects of the application in connection with the illustrative embodiments. However, it will be understood that various modifications and variations can be made to the disclosed embodiments without departing from the spirit or scope of the application. Accordingly, it should be understood that the application is not to be limited by what has been presented above, but is to be understood to cover all alternatives, modifications and equivalents falling within the scope of the application.

Claims

1. A single-phase contact clamp, characterized in that, include: An insulated operating rod (1), a gripper-type conductive clamp (2), and a hand-held device (3); The hand grip device (3) is located at the tail of the insulating operating rod (1); The head of the insulating operating rod (1) is connected to the gripper-type conductive clamp (2); The hand gripping device (3) is connected to the gripper-type conductive clip (2); The gripper-type conductive clamp (2) has two working states: open and closed. The open state is when the gripper-type conductive clamp (2) is open, and the closed state is when the gripper-type conductive clamp (2) is closed and tightened.

2. The single-phase contact clamp as described in claim 1, characterized in that, The gripper-type conductive clamp (2) includes: a hollow, frustum-shaped gripper base (21) and at least 3 sets of linkage devices (22); The frustum-shaped gripper seat (21) has a large circular cross section at one end and a small circular cross section at the other end; The small annular section of the gripper base (21) is connected to the insulating operating rod (1); At least three sets of connecting rod devices (22) are evenly arranged along the circumferential direction of the large annular cross section of the gripper seat (21); The linkage device (22) includes: a first link (221), a second link (222), a third link (223), a fourth link (224), and a fifth link (225); The first connecting rod (221) is perpendicular to the large annular cross section of the gripper seat (21) and is fixedly connected to the large annular cross section of the gripper seat (21); The second link (222) is cross-located above the first link (221), and the intersection of the second link (222) and the first link (221) is hinged and rotatably connected. One end of the second link (222) is connected to the upper end of the fourth link (224), and the other end of the second link (222) is connected to the upper end of the fifth link (225). The third link (223) is intersected at the lower part of the first link (221), and the intersection of the third link (223) and the first link (221) is hinged and rotatably connected. One end of the third link (223) is connected to the lower end of the fourth link (224), and the other end of the third link (223) is connected to the lower end of the fifth link (225). The second link (222) and the third link (223) are parallel to each other; The fourth link (224), the fifth link (225) and the first link (221) are parallel to each other, and the fourth link (224) and the fifth link (225) are respectively disposed on both sides of the first link (221). The fourth link (224) is disposed on the inner side of the gripper seat (21), and the fifth link (225) is disposed on the outer side of the gripper seat (21). At least one first spring (226) is connected between the fourth link (224) of adjacent link devices (22) in the at least three sets of link devices (22); The outer side of the gripper base (21) is provided with a first terminal post (228), and a first radial terminal hole (229) is provided in the middle of the first terminal post (228). The first terminal post (228) is axially threaded with a first terminal bolt (227), and the first terminal bolt (227) passes through the first terminal post (228) from the top of the first terminal post (228) along the axial direction of the first terminal post (228) and enters the first radial terminal hole (229). The gripping device (3) rests on the inside of the third link (223) in each link device (22), and the gripping device (3) can translate back and forth along the axial direction of the gripper seat (21).

3. The single-phase contact clamp as described in claim 2, characterized in that, The insulating operating rod (1) has a hollow structure; the hand grip device (3) includes: a push rod (31), a sixth connecting rod (32) and a seventh connecting rod (33); The push rod (31) is sleeved inside the hollow insulating operating rod (1) in a sliding manner along the longitudinal direction of the insulating operating rod (1); The head end of the push rod (31) abuts against the inside of the third link (223) in each linkage (22); The tail end of the push rod (31) is located at the tail of the insulating operating rod (1); The insulating operating rod (1) is provided with a long strip-shaped slit (11) along the axial direction; One end of the seventh link (33) is rotatably hinged to the tail of the insulating operating rod (1), and the other end of the seventh link (33) faces the head of the insulating operating rod (1). The seventh link (33) is inclined along the axial direction of the insulating operating rod (1) and forms an acute angle with the insulating operating rod (1). The other end of the seventh link (33) is rotatably hinged to one end of the sixth link (32). The sixth link (32) forms an obtuse angle with the seventh link (33). The other end of the sixth link (32) is rotatably hinged to the tail of the push rod (31) through the elongated slit (11).

4. The single-phase contact clamp as described in claim 1, characterized in that, The single-phase contact clamp also includes a cylindrical elastic protective cover (4) sleeved on the outside of the gripper-type conductive clamp (2).

5. A busbar fast grounding switch, characterized in that, include: At least one single-phase contact clamp as described in any one of claims 1-4, at least one grounding clamp (6), and a grounding wire (7) with an insulated outer sheath; The grounding clamp (6) is electrically connected to the gripper-type conductive clamp (2) on the single-phase contact clamp via the grounding wire (7) with an insulated outer sheath.

6. The busbar fast grounding switch as described in claim 5, characterized in that, A cylindrical elastic protective cover (4) is fitted onto the outside of the gripper-type conductive clamp (2) on each single-phase contact clamp in a tightened state, and all cylindrical elastic protective covers (4) are connected by connecting plates (8) in a linear or circular distribution.

7. The busbar fast grounding switch as described in claim 5, characterized in that, The grounding clamp (6) includes: a first clamping plate (61), a second clamping plate (62), a second spring (63), a first insulating plate (64), and a second insulating plate (65); The first clamping plate (61) and the second clamping plate (62) are arranged in a V-shape and are hinged in the middle by rotation; The heads of the first clamping plate (61) and the second clamping plate (62) on the side near the V-shaped tip are provided with interlocking serrated structures. A second spring (63) is provided at the hinge near the V-shaped opening. One end of the second spring (63) is connected to the lower side of the first clamping plate (61), and the other end of the second spring (63) is connected to the upper side of the second clamping plate (62). The first insulating plate (64) is connected to the tail of the first clamping plate (61) facing the V-shaped opening side, and the second insulating plate (65) is connected to the tail of the second clamping plate (62) facing the V-shaped opening side; The first clamping plate (61) is provided with a second terminal post (66), and a second radial wiring hole (67) is provided in the middle of the second terminal post (66). The second terminal post (66) is axially threaded with a second wiring bolt (68), and the second wiring bolt (68) passes through the second terminal post (66) from the top of the second terminal post (66) along the axial direction of the second terminal post (66) and enters the second radial wiring hole (67). One end of the grounding wire (7) is inserted into the second radial wiring hole (67) and locked by the second wiring bolt (68), and the other end is connected to the gripper-type conductive clamp (2) on each single-phase contact clamp.

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