Fuse wire replacing device of drop-out fuse

Abstract

The invention relates to the technical field of electric power overhaul equipment, in particular to a drop-out fuse wire replacement device which comprises a holding unit and a clamping unit. Wherein the holding unit comprises a holding piece and a first insulating piece which are connected with each other; the clamping unit is connected to the first insulating part so that the clamping unit and the holding part can be arranged in a spaced and insulated mode, the clamping unit comprises a clamping jaw set, the clamping jaw set can clamp objects and comprises a movable clamping jaw and a fixed clamping jaw which are oppositely arranged, and the movable clamping jaw is configured to be capable of moving so as to adjust the clamping space between the movable clamping jaw and the fixed clamping jaw. The fuse replacement device of the drop-out fuse can clamp and fix the fuse tube, facilitates the replacement of the fuse, and improves the working efficiency. And the holding piece and the clamping unit are separated through the first insulating piece, so that the safety risk can be reduced, and the personal safety of workers is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of electric power maintenance equipment, and in particular to a device for replacing a fuse of a drop-out type fuse. Background Art

[0002] The overhead line transformers of the power grid are generally equipped with drop-out fuses. In summer, due to excessive load, the fuse of the drop-out fuse is easy to burn out, that is, the fuse in the drop-out fuse needs to be replaced. The fuse replacement process includes at least the following steps: removing the fuse tube of the drop-out fuse, replacing the fuse in the fuse tube, and reinstalling the fuse tube. In the prior art, the staff will use an insulating operating rod to assist in completing the above process, but the existing insulating operating rod cannot clamp and fix the fuse tube, which is inconvenient to apply force to the fuse tube, inconvenient to disassemble, and inconvenient to install, resulting in low operating efficiency and high safety risks. Summary of the invention

[0003] The object of the present invention is to provide a device for replacing the fuse of a drop-out type fuse, which can facilitate the replacement of the fuse, improve work efficiency and reduce safety risks.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A drop-out fuse replacement device is provided, comprising:

[0006] A holding unit, comprising a holding member and a first insulating member connected to each other;

[0007] A clamping unit, wherein the clamping unit is connected to the first insulating member so that the clamping unit is insulated from the holding member, the clamping unit comprises a jaw group, the jaw group can clamp an object, the jaw group comprises a movable jaw and a fixed jaw arranged opposite to each other, the movable jaw is configured to be movable to adjust the clamping space between the movable jaw and the fixed jaw.

[0008] Optionally, the clamping unit further includes a driving member, a conveyor belt and a base, the base is connected to the conveyor belt, the driving member is used to drive the conveyor belt to rotate, the fixed clamp is connected to the base, and the movable clamp is movably arranged on the base.

[0009] Optionally, the clamping unit also includes a shell, a first elastic member, and a first magnetic member and a second magnetic member that repel each other. The first magnetic member is arranged on the shell, the second magnetic member is arranged on the movable jaw, the second magnetic member is located between the first magnetic member and the fixed jaw, the first elastic member is connected to the movable jaw and the base, and the first elastic member has a tendency to move the movable jaw away from the fixed jaw.

[0010] Optionally, the clamping unit also includes a rack, a gear and a locking piece, the rack is connected to the movable jaw, the gear shaft of the gear is connected to the base, the locking piece is connected to the base, the gear is meshingly connected to the rack, and the locking piece is used to clamp the gear so that the gear can only rotate in a first direction, and when the movable jaw approaches the fixed jaw, the gear rotates in the first direction.

[0011] Optionally, the clamping unit further includes an unlocking member, which is used to abut against the locking member to disengage the locking member from the gear, and the unlocking member is connected to the shell and is located at an end of the shell where the first magnetic member is not provided.

[0012] Optionally, the clamping unit further includes an airbag and an inflation component, wherein the airbag is arranged on the surface of the movable jaw facing the fixed jaw, and / or the airbag is arranged on the surface of the fixed jaw facing the movable jaw, and the inflation component is configured to inflate the airbag when the movable jaw approaches the fixed jaw.

[0013] Optionally, the inflation component comprises an outer cylinder and an inner cylinder arranged coaxially, one end of the outer cylinder and the inner cylinder along the axial direction is connected to the fixed clamping jaw, and the other end is connected to the movable clamping jaw, one end of the inner cylinder blocks the opening on the outer cylinder, and the inner cylinder is retractably inserted into the outer cylinder along the axial direction of the outer cylinder through the opening to adjust the volume of the inner cavity of the outer cylinder, the inner cavity of the inner cylinder is connected with the inner cavity of the outer cylinder, a first through hole is opened on the inner cylinder, and the inner cavity of the inner cylinder is connected to the inner cavity of the airbag through the first through hole;

[0014] And / or, the airbag includes a first airbag and a second airbag, the first airbag is arranged on the movable clamping jaw, the second airbag is arranged on the fixed clamping jaw, the inflation component also includes a telescopic connecting pipe, the first port of the telescopic connecting pipe is connected to the first airbag, the second port of the telescopic connecting pipe is connected to the second airbag, and the third port of the telescopic connecting pipe is provided with a first one-way valve, and the gas in the telescopic connecting pipe can be discharged when the first one-way valve is opened;

[0015] And / or, the inflation component further comprises an air intake pipe, the air intake pipe is connected to the airbag, a second one-way valve is arranged on the air intake pipe, and the air intake pipe can input gas when the second one-way valve is opened.

[0016] Optionally, the drop-out fuse replacement device also includes a purging unit, which includes a purging tube, and the purging tube is connected to the fixed clamp and / or the movable clamp, and one end of the purging tube is connected to the retractable connecting tube, so that the gas released by the airbag can be blown toward the object through the retractable connecting tube and the purging tube.

[0017] Optionally, the drop-out fuse replacement device further comprises an electrical testing unit, wherein the electrical testing unit comprises an electrical testing piece and a second insulating piece, wherein one end of the second insulating piece is connected to the clamping unit, and the other end is connected to the electrical testing piece.

[0018] Optionally, the drop-out fuse replacement device further comprises a support plate and a sawtooth piece, wherein the support plate is connected to the second insulating member, the test terminal of the test member is connected to the support plate, and the sawtooth piece is detachably connected to the support plate.

[0019] Beneficial effects of the present invention:

[0020] The present invention provides a device for replacing the fuse of a drop-type fuse, comprising a holding unit and a clamping unit. The holding unit comprises a holding piece and a first insulating piece connected to each other. The clamping unit is connected to the first insulating piece so that the clamping unit and the holding piece are spaced and insulated. The clamping unit comprises a jaw group, which can clamp objects. The jaw group comprises a movable jaw and a fixed jaw that are relatively arranged. The movable jaw is configured to be movable to adjust the clamping space between the movable jaw and the fixed jaw. The device for replacing the fuse of a drop-type fuse can clamp and fix the fuse tube, facilitate the replacement of the fuse, and improve work efficiency. The holding piece and the clamping unit are separated by the first insulating piece, which can reduce safety risks and ensure the personal safety of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a partial structural schematic diagram of a fuse replacement device of a drop-out type fuse provided in an embodiment of the present invention;

[0022] Figure 2 It is a partial cross-sectional view of a partial structure of a fuse replacement device of a drop-out type fuse provided in an embodiment of the present invention;

[0023] Figure 3 is a partial structural schematic diagram of a clamping unit provided in an embodiment of the present invention;

[0024] Figure 4 is a partial cross-sectional view of a partial structure of a clamping unit provided by an embodiment of the present invention;

[0025] Figure 5 is a cross-sectional view of an outer cylinder, an inner cylinder and a second elastic member provided by an embodiment of the present invention;

[0026] Figure 6 It is a partial structural schematic diagram of a clamping unit and a purge unit provided in an embodiment of the present invention.

[0027] In the figure:

[0028] 1. holding unit; 11. holding piece; 111. handle; 12. first insulating piece;

[0029] 2. Clamping unit; 201. Movable clamping jaw; 202. Fixed clamping jaw; 203. Driving member; 204. Conveyor belt; 205. Base; 206. Shell; 207. Second elastic member; 208. Rack; 209. Gear; 210. Locking member; 211. Unlocking member; 212. First magnetic member; 213. Air bag; 214. Outer cylinder; 2141. Compressible space; 215. Inner cylinder; 216. Telescopic connecting pipe; 217. First one-way valve; 218. Suction pipe; 219. Second one-way valve; 220. Passive shaft;

[0030] 3. Purge unit; 31. Purge end; 32. Purge bracket; 33. Fixed magnetic suction piece; 34. Connecting tee pipe;

[0031] 4. Electricity testing unit; 41. Electricity testing member; 411. Electricity testing terminal; 42. Second insulating member; 43. Display screen;

[0032] 5. Support plate; 6. Sawtooth blade. DETAILED DESCRIPTION

[0033] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above drawings.

[0034] In this application, the terms "comprises", "includes", "has" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0035] In this application, the term "and / or" is a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects before and after are in an "and / or" relationship.

[0036] In the present application, the terms "connect", "combine", "couple", and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, direct connection refers to two parts or components being connected together without the need for an intermediate piece, and indirect connection refers to two parts or components being connected to at least one intermediate piece respectively, and the two parts or components being connected via the intermediate piece. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0037] In this application, it will be understood by those of ordinary skill in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerances caused by manufacturing, assembly, and use associated with a specific value, etc. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0038] In this application, it will be understood by those skilled in the art that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0039] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, the bottom can include directly below, lower left, lower right, lower front, and lower back, etc.

[0040] like Figure 1-Figure 6As shown, the drop-type fuse replacement device of this embodiment includes a holding unit 1 and a clamping unit 2. Among them, the holding unit 1 includes a holding piece 11 and a first insulating piece 12 connected to each other. The clamping unit 2 is connected to the first insulating piece 12 so that the clamping unit 2 and the holding piece 11 are spaced and insulated. The clamping unit 2 includes a jaw group, which can clamp objects. The jaw group includes a movable jaw 201 and a fixed jaw 202 that are relatively arranged. The movable jaw 201 is configured to be movable to adjust the clamping space between the movable jaw 201 and the fixed jaw 202. The drop-type fuse replacement device can clamp and fix the fuse tube, facilitate the replacement of the fuse, and improve work efficiency. And the first insulating piece 12 is used to separate the holding piece 11 and the clamping unit 2, which can reduce safety risks and ensure the personal safety of the staff.

[0041] Optionally, the holding member 11 has a main body and a handle 111 , one end of the main body is connected to the first insulating member 12 , and the handle 111 is disposed on the main body, so that a worker can conveniently apply force to the device by holding the handle 111 .

[0042] Optionally, in this embodiment, the holding piece 11, the first insulating piece 12 and the clamping unit 2 are arranged in a straight line to ensure that the holding piece 11 and the clamping unit 2 are spaced and insulated to the greatest extent.

[0043] Optionally, the clamping unit 2 includes a driving member 203, a conveyor belt 204 and a base 205, wherein the base 205 is connected to the conveyor belt 204, and the driving member 203 is used to drive the conveyor belt 204 to rotate. Optionally, the driving member 203 is a motor. Optionally, the clamping unit 2 also includes an active shaft and a passive shaft 220, which jointly support the conveyor belt 204, wherein the output end of the motor is connected to the active shaft to drive the active shaft to rotate. Optionally, a guide protrusion is provided on the base 205, and a guide groove is provided on the inner side of the housing 206, wherein the extension direction of the guide groove is parallel to the conveying direction of the conveyor belt 204, and the guide protrusion is inserted in the guide groove to guide the base 205 as the conveyor belt 204 moves.

[0044] Optionally, the fixed clamping jaw 202 is connected to the base 205, and the movable clamping jaw 201 is movably arranged on the base 205. Optionally, a sliding groove is arranged on the side of the base 205, and the extending direction of the sliding groove is parallel to the connecting direction of the movable clamping jaw 201 and the fixed clamping jaw 202. The bottom side of the movable clamping jaw 201 has a sliding protrusion, and the sliding protrusion can be slidably inserted in the sliding groove, so as to guide the movement of the movable clamping jaw 201 and ensure that the movable clamping jaw 201 moves in a direction close to or away from the fixed clamping jaw 202.

[0045] Optionally, in this embodiment, the base 205, the movable clamping jaw 201 and the fixed clamping jaw 202 are each provided with two groups, and two groups can be provided to clamp two objects. One group is located on the first side of the conveyor belt 204, and the other group is located on the second side of the conveyor belt 204. When the conveyor belt 204 is driven, the two groups of bases 205 move in opposite directions.

[0046] Other components of the clamping unit 2 and other units will be introduced below, some of which are closely related to the clamping jaw group. These components are provided in two groups to correspond to the two groups of clamping jaw groups respectively, and the subsequent description will take one group as an example.

[0047] Optionally, the clamping unit 2 further comprises a housing 206, a first elastic member (not shown in the figure), and a first magnetic member 212 and a second magnetic member that repel each other. The first magnetic member 212 is arranged on the housing 206, and the motor and the conveyor belt 204 are also arranged in the housing 206. The clamping jaw group extends out of the housing 206 through the through hole on the housing 206. In order to enable the movable clamping jaw 201 to automatically approach the fixed clamping jaw 202, the second magnetic member (not shown in the figure) is arranged on the movable clamping jaw 201, and the second magnetic member is located between the first magnetic member 212 and the fixed clamping jaw 202. The first magnetic member 212 is arranged at one end of the housing 206 along the conveying direction of the conveyor belt 204, that is, when the conveyor belt 204 drives the base 205 and the clamping jaw group to approach this end of the housing 206, the first magnetic member 212 has a tendency to push the second magnetic member and the movable clamping jaw 201 to move close to the fixed clamping jaw 202, so that the distance between the two clamping jaws can be shortened.

[0048] Optionally, the first elastic member is connected to both the movable jaw 201 and the base 205, and has a tendency to move the movable jaw 201 away from the fixed jaw 202, that is, it can drive the movable jaw 201 to restore its position. Optionally, the first elastic member is a spring or an elastic sheet.

[0049] Optionally, the clamping unit 2 further includes a rack 208, a gear 209 and a locking member 210, wherein the rack 208 is connected to the movable jaw 201, the gear shaft of the gear 209 is connected to the base 205, the locking member 210 is connected to the base 205, the gear 209 is meshedly connected with the rack 208, and the locking member 210 is used to clamp the gear 209 so that the gear 209 can only rotate in a first direction, and when the movable jaw 201 approaches the fixed jaw 202, the gear 209 rotates in the first direction. That is, when the movable jaw 201 moves toward the fixed jaw 202, the rack 208 moves with the movable jaw 201, and the rack 208 drives the gear 209 to rotate, and the locking member 210 will clamp the gear 209 at any time to prevent the gear 209 from reversing, that is, to prevent the movable jaw 201 from moving away from the fixed jaw 202.

[0050] Optionally, the clamping unit 2 further includes an unlocking member 211, which is used to abut against the locking member 210 to disengage the locking member 210 from the gear 209. The unlocking member 211 is connected to the housing 206 and is located at an end of the housing 206 where the first magnetic member 212 is not provided. In this embodiment, the unlocking member 211 is a pin, which is located at the other end of the housing 206 along the conveying direction of the conveyor belt 204, that is, along the moving direction of the base 205 and the clamping jaw group, and the first magnetic member 212 and the unlocking member 211 are respectively provided at both ends.

[0051] When the motor drives the conveyor belt 204 to rotate, the conveyor belt 204 drives the base 205 and the clamping jaw group to move toward the first magnetic member 212, and the magnetic repulsion force between the first magnetic member 212 and the second magnetic member pushes the movable clamping jaw 201 to move close to the fixed clamping jaw 202. At the same time, the movable clamping jaw 201 drives the rack 208 to move, and the rack 208 drives the gear 209 to rotate, and the gear 209 is clamped by the locking member 210 at any time. Until the distance between the movable clamping jaw 201 and the fixed clamping jaw 202 is appropriate, the motor stops driving, and the locking member 210 clamps the gear 209, and the gear 209 is meshed with the rack 208, which can ensure that the position of the movable clamping jaw 201 relative to the fixed clamping jaw 202 remains unchanged, so that a reliable clamping mode can be formed, which can ensure that the object is always clamped.

[0052] When the staff needs to release the object after completing the operation, the staff only needs to reverse the motor, and the conveyor belt 204 drives the base 205 to move to the unlocking member 211. The unlocking member 211 will abut the locking member 210 to disengage it from the gear 209. At this time, the movable clamp 201 will move away from the fixed clamp 202 under the action of the first elastic member, and the object can be released.

[0053] In order to prevent the clamping jaws from damaging the object when clamping the object, the clamping unit 2 may further include an airbag 213 and an inflatable component, wherein the airbag 213 is arranged on the surface of the movable clamping jaw 201 facing the fixed clamping jaw 202, or the airbag 213 is arranged on the surface of the fixed clamping jaw 202 facing the movable clamping jaw 201, or the airbag 213 is arranged on the surface of the movable clamping jaw 201 facing the fixed clamping jaw 202 and on the surface of the fixed clamping jaw 202 facing the movable clamping jaw 201. The inflatable component is configured to inflate the airbag 213 in the process of the movable clamping jaw 201 approaching the fixed clamping jaw 202, that is, to achieve flexible clamping of the object.

[0054] Optionally, the inflatable assembly includes an outer cylinder 214 and an inner cylinder 215 which are coaxially arranged, and the axial directions of the outer cylinder 214 and the inner cylinder 215 are parallel to the line between the two clamping jaws. One end of the outer cylinder 214 and the inner cylinder 215 along the axial direction is connected to the fixed clamping jaw 202, and the other end is connected to the movable clamping jaw 201. One end of the inner cylinder 215 blocks the opening on the outer cylinder 214, and the inner cylinder 215 is retractably inserted into the outer cylinder 214 along the axial direction of the outer cylinder 214 through the opening to adjust the volume of the inner cavity of the outer cylinder 214, that is, the overall volume of the inner cavities of the outer cylinder 214 and the inner cylinder 215, that is, the volume of the compressible space 2141 in the figure. The inner cavity of the inner cylinder 215 is connected to the inner cavity of the outer cylinder 214, and a first through hole is opened on the inner cylinder 215, and the inner cavity of the inner cylinder 215 is connected to the inner cavity of the airbag 213 through the first through hole. That is, when the movable jaw 201 approaches the fixed jaw 202, the inner cylinder 215 and the outer cylinder 214 will be compressed, so that the inner cylinder 215 moves relative to the outer cylinder 214 in the direction of extending into the outer cylinder 214, the compressible space 2141 will become smaller, and the gas in the compressible space 2141 will be pressed into the airbag 213 to expand the airbag 213, thereby realizing the flexible clamping of the airbag 213 on the object.

[0055] Optionally, a second elastic member 207 is sleeved on the outer side of the outer cylinder 214 and the inner cylinder 215. The second elastic member 207 is a spring. The two ends of the second elastic member 207 are respectively connected to the two ends of the overall length direction of the outer cylinder 214 and the inner cylinder 215. The second elastic member 207 has a tendency to stretch the outer cylinder 214 and the inner cylinder 215 as a whole to further ensure that after the work is completed, the movable jaw 201 can quickly move away from the fixed jaw 202 to release the clamped object.

[0056] Optionally, the airbag 213 includes a first airbag and a second airbag, the first airbag is arranged on the movable jaw 201, and the second airbag is arranged on the fixed jaw 202. The inflation assembly also includes a telescopic connecting tube 216, the first port of the telescopic connecting tube 216 is connected to the first airbag, and the second port of the telescopic connecting tube 216 is connected to the second airbag. Optionally, the telescopic connecting tube 216 is a bellows with adjustable length, and the length of the bellows is adjusted accordingly when the distance between the two jaws changes.

[0057] Optionally, the first through hole of the inner cylinder 215 is directly connected to the inner cavity of the movable jaw 201, and the inner cavity of the movable jaw 201 is connected to the first airbag. One end of the telescopic connecting tube 216 is connected to the movable jaw 201, and the other end is connected to the fixed jaw 202. The two ends of the telescopic connecting tube 216 are respectively connected to the inner cavities of the two jaws. When the movable jaw 201 approaches the fixed jaw 202, the inner cylinder 215 moves relative to the outer cylinder 214 in the direction of extending into the outer cylinder 214, and the compressible space 2141 will become smaller. The gas in the compressible space 2141 will be partially pressed into the first airbag through the inner cavity of the movable jaw 201, and partially pressed into the second airbag through the inner cavity of the telescopic connecting tube 216 and the fixed jaw 202. The two airbags 213 are both expanded, and the double-sided flexible clamping of the object can be achieved.

[0058] Optionally, the telescopic connecting tube 216 also has a third port, that is, the telescopic connecting tube 216 is a three-way tube, and a first one-way valve 217 is provided on the pipeline of the third port of the telescopic connecting tube 216, and the gas in the telescopic connecting tube 216 can be discharged when the first one-way valve 217 is opened. That is, when it is necessary to release the object, the first one-way valve 217 can be opened to quickly discharge the gas in the first airbag and the second airbag, so that the object can be quickly released. Optionally, the inflation component also includes an air intake pipe 218, the air intake pipe 218 is connected to the airbag 213, and the air intake pipe 218 is provided with a second one-way valve 219, and the air intake pipe 218 can input gas when the second one-way valve 219 is opened. Optionally, in this embodiment, the air intake pipe 218 is connected to the movable clamp 201, and the air intake pipe 218 is connected to the inner cavity of the movable clamp 201.

[0059] That is, when the locking piece 210 is unlocked and the movable jaw 201 quickly moves away from the fixed jaw 202, the inner cylinder 215 and the outer cylinder 214 will be driven to extend, and the volume of the compressible space 2141 will increase. At this time, the second one-way valve 219 will automatically open, and the gas will enter the compressible space 2141 through the suction pipe 218 and the inner cavity of the movable jaw 201, preparing for the next clamping of an object.

[0060] In order to purge the object and remove the debris on the surface of the object, the drop-out fuse replacement device may further include a purge unit 3. The purge unit 3 includes a purge pipe connected to the fixed jaw 202 or the movable jaw 201, or the fixed jaw 202 and the movable jaw 201 are both provided with the purge pipe.

[0061] Optionally, the purge tube is fixed to the clamp through a purge bracket 32, and the purge bracket 32 ​​is detachably connected to the clamp through a fixed magnetic suction piece 33. In the present embodiment, a purge bracket 32 ​​may be provided on both the fixed clamp 202 and the movable clamp 201, and the purge bracket 32 ​​is located on the side of the clamp, and a purge tube is provided on both purge brackets 32. The cross section of the purge bracket 32 ​​is C-shaped, and the purge tube is located in the inner cavity of the purge bracket 32 ​​to prevent the purge tube from being squeezed. Optionally, a fixing hole is provided on the purge bracket 32, and the purge end 31 of the purge tube extends toward the object through the fixing hole, and the fixing hole can clamp the purge end 31 and position it to ensure that the purge direction of the airflow is fixed. Optionally, in other embodiments, a plurality of fixing holes may also be provided on the purge bracket 32, and the purge tube may have a plurality of branch ends to purge different positions of the object.

[0062] Optionally, one end of the purge pipe is connected to the telescopic connecting pipe 216, so that the gas released by the airbag 213 can be blown toward the object through the telescopic connecting pipe 216 and the purge pipe. Optionally, the telescopic connecting pipe 216 has a third branch pipe, and the second one-way valve 219 is arranged on the third branch pipe. The third branch pipe is connected to one port of the connecting three-way pipe 34, and the other two ports of the connecting three-way pipe 34 are respectively connected to the two purge pipes.

[0063] In order to facilitate the staff to perform the electricity testing operation, optionally, the drop-out type fuse replacement device further includes an electricity testing unit 4, which includes an electricity testing piece 41 and a second insulating piece 42, one end of the second insulating piece 42 is connected to the clamping unit 2, and the other end is connected to the electricity testing piece 41. Optionally, the electricity testing piece 41 has two electricity testing terminals 411, and the two electricity testing terminals 411 extend in two perpendicular directions to facilitate the electricity testing operation.

[0064] Optionally, the drop-out fuse replacement device further comprises a support plate 5 , which is connected to the second insulating member 42 , and the test terminal 411 of the test member 41 is connected to the support plate 5 to facilitate fixation with the test terminal 411 .

[0065] Optionally, the test piece 41 is located in a groove of the second insulating piece 42 , and a cable of the test piece 41 is located in a support rod, and the support rod extends to the test terminal 411 through a through hole in the second insulating piece 42 .

[0066] Optionally, a display screen 43 is provided on the main body of the holding unit 1 , and the display screen 43 is communicatively connected with the electrical testing component 41 , so that the staff can view the electrical testing data and the like on the display screen 43 .

[0067] Optionally, the drop-out fuse replacement device further comprises a sawtooth piece 6, which is detachably connected to the support plate 5, that is, when cutting is required, the sawtooth piece 6 can be installed on the support plate 5. Optionally, the sawtooth piece 6 is connected to the support plate 5 by bolts.

[0068] It is known that there is a first insulating member 12 between the holding unit 1 and the clamping unit 2, and there are a first insulating member 12 and a second insulating member 42 between the sawtooth and the electrical testing unit 4. Double insulation protection can further improve the safety of operation.

[0069] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A device for replacing a drop-out fuse, characterized in that: include: A gripping unit (1) comprising a gripping member (11) and a first insulating member (12) connected to each other; A clamping unit (2), the clamping unit (2) being connected to the first insulating member (12) so that the clamping unit (2) and the holding member (11) are spaced and insulated from each other, the clamping unit (2) comprising a clamping jaw group, the clamping jaw group being capable of clamping an object, the clamping jaw group comprising a movable clamping jaw (201) and a fixed clamping jaw (202) being arranged opposite to each other, the movable clamping jaw (201) being configured to be movable so as to adjust the clamping space between the movable clamping jaw (201) and the fixed clamping jaw (202).

2. The device for replacing a drop-out fuse according to claim 1, characterized in that: The clamping unit (2) further comprises a driving member (203), a conveyor belt (204) and a base (205); the base (205) is connected to the conveyor belt (204); the driving member (203) is used to drive the conveyor belt (204) to rotate; the fixed clamping jaw (202) is connected to the base (205); and the movable clamping jaw (201) is movably arranged on the base (205).

3. The device for replacing a drop-out fuse according to claim 2, characterized in that: The clamping unit (2) further comprises a shell (206), a first elastic member, and a first magnetic member (212) and a second magnetic member that repel each other. The first magnetic member (212) is arranged on the shell (206), the second magnetic member is arranged on the movable clamping jaw (201), and the second magnetic member is located between the first magnetic member (212) and the fixed clamping jaw (202). The first elastic member is connected to the movable clamping jaw (201) and the base (205), and the first elastic member has a tendency to move the movable clamping jaw (201) away from the fixed clamping jaw (202).

4. The device for replacing a drop-out fuse according to claim 3, characterized in that: The clamping unit (2) further comprises a rack (208), a gear (209) and a locking member (210); the rack (208) is connected to the movable clamping jaw (201); the gear shaft of the gear (209) is connected to the base (205); the locking member (210) is connected to the base (205); the gear (209) is meshingly connected with the rack (208); the locking member (210) is used to clamp the gear (209) so that the gear (209) can only rotate in a first direction; when the movable clamping jaw (201) approaches the fixed clamping jaw (202), the gear (209) rotates in the first direction.

5. The device for replacing a drop-out fuse according to claim 4, characterized in that: The clamping unit (2) further comprises an unlocking member (211), the unlocking member (211) being used to abut against the locking member (210) so as to disengage the locking member (210) from the gear (209), the unlocking member (211) being connected to the housing (206) and being located at an end of the housing (206) where the first magnetic member (212) is not provided.

6. The device for replacing a drop-out fuse according to any one of claims 1 to 5, characterized in that: The clamping unit (2) further comprises an airbag (213) and an inflation component, wherein the airbag (213) is arranged on the surface of the movable clamping jaw (201) facing the fixed clamping jaw (202), and / or the airbag (213) is arranged on the surface of the fixed clamping jaw (202) facing the movable clamping jaw (201), and the inflation component is configured to be able to inflate the airbag (213) when the movable clamping jaw (201) approaches the fixed clamping jaw (202).

7. The device for replacing a drop-out fuse according to claim 6, characterized in that: The inflation component comprises an outer cylinder (214) and an inner cylinder (215) which are coaxially arranged; one end of the outer cylinder (214) and the inner cylinder (215) is connected to the fixed clamp (202) in the axial direction, and the other end is connected to the movable clamp (201); one end of the inner cylinder (215) blocks an opening on the outer cylinder (214); and the inner cylinder (215) is telescopically inserted into the outer cylinder (214) in the axial direction of the outer cylinder (214) through the opening to adjust the volume of the inner cavity of the outer cylinder (214); the inner cavity of the inner cylinder (215) is communicated with the inner cavity of the outer cylinder (214); a first through hole is provided on the inner cylinder (215); and the inner cavity of the inner cylinder (215) is communicated with the inner cavity of the airbag (213) through the first through hole; And / or, the airbag (213) comprises a first airbag and a second airbag, the first airbag is arranged on the movable clamp (201), and the second airbag is arranged on the fixed clamp (202), the inflation component further comprises a telescopic connecting tube (216), a first port of the telescopic connecting tube (216) is connected to the first airbag, a second port of the telescopic connecting tube (216) is connected to the second airbag, a first one-way valve (217) is arranged on the pipeline of the third port of the telescopic connecting tube (216), and when the first one-way valve (217) is opened, the gas in the telescopic connecting tube (216) can be discharged; And / or, the inflation component further comprises an air intake pipe (218), the air intake pipe (218) being connected to the air bag (213), the air intake pipe (218) being provided with a second one-way valve (219), and the air intake pipe (218) being able to input gas when the second one-way valve (219) is opened.

8. The device for replacing a drop-out fuse according to claim 6, characterized in that: The drop-out type fuse replacement device further comprises a purging unit (3), the purging unit (3) comprising a purging pipe, the purging pipe being connected to the fixed clamping jaw (202) and / or the movable clamping jaw (201), one end of the purging pipe being connected to a retractable connecting pipe (216), so that the gas discharged from the air bag (213) can be blown toward the object through the retractable connecting pipe (216) and the purging pipe.

9. The device for replacing a drop-out fuse according to any one of claims 1 to 5, characterized in that: The drop-out type fuse replacement device further comprises an electric test unit (4), the electric test unit (4) comprising an electric test piece (41) and a second insulating piece (42), one end of the second insulating piece (42) being connected to the clamping unit (2) and the other end being connected to the electric test piece (41).

10. The device for replacing a drop-out fuse according to claim 9, characterized in that: The drop-out type fuse replacement device further comprises a support plate (5) and a sawtooth piece (6); the support plate (5) is connected to the second insulating member (42); the electric test terminal (411) of the electric test member (41) is connected to the support plate (5); and the sawtooth piece (6) is detachably connected to the support plate (5).

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