Drop-out fuse operating lever

Abstract

The present invention discloses a drop-type fuse operating rod, comprising a multi-stage telescopic rod with an operating head fixedly connected to the top, the operating head comprising an operating top rod, an operating clamp fixing rod, a fusion tube operating clamp, an operating cross bar, an anti-drop hook mounting rod and an anti-drop hook, the operating top rod being fixed to the top of the multi-stage telescopic rod and extending vertically upward along its axis, the operating clamp fixing rod, the operating cross bar and the proximal ends of the anti-drop hook mounting rod being fixed to the bottom of the operating top rod, the operating clamp fixing rod, the operating cross bar and the anti-drop hook mounting rod extending outward in the horizontal direction respectively, the fusion tube operating clamp being mounted at the distal end of the operating clamp fixing rod, and the anti-drop hook being mounted at the distal end of the anti-drop hook mounting rod. The drop-type fuse operating rod of the present invention has a simple structure and is multifunctional in one, which enables operators to quickly and accurately complete the disassembly and installation of the fusion tube without the fusion tube falling, thereby effectively improving work efficiency and ensuring the safety of operators and equipment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of power equipment auxiliary tools, and particularly relates to an operating rod for a drop-out fuse. BACKGROUND

[0002] The drop-out fuse is one of important electrical equipment in a power supply and distribution system, and is a relatively safe and economical primary equipment. With the expansion of the construction scale of the power grid power distribution system, the number of drop-out fuses in the power distribution system has experienced explosive growth, and mainly exists in line PT station equipment such as transformers. Meanwhile, the operation and fault handling of the drop-out fuse become more and more frequent. Today, with the increasing requirement for power supply reliability, how to quickly operate the drop-out fuse and quickly handle its fault becomes increasingly important.

[0003] In the general type drop-out fuse tube device, the fuse tube, the base and the top structure are included, and the top moving contact of the fuse tube device can be designed into a shape with adjustable distance into the fuse tube body, so that the length of the fuse tube can be adjusted, and the top of different models of fuses can be adapted. In the actual installation and application of the general type drop-out fuse tube device, the top is rotated, and then the moving contact at the top of the fuse tube device is fixed to complete the installation. Meanwhile, in the lower base of the general type drop-out fuse tube, a lower contact copper rod is provided on the upper portion, and the lower contact copper rod is characterized in that at least one gasket assembly is detachably arranged on the exposed portion on both sides of the lower base of the general type drop-out fuse tube.

[0004] Now the operating tool mainly uses a high-voltage pole, and in the process of switching operation and replacing the fuse, the high-voltage pole has many problems when taking down and putting on the drop-out fuse. First, when putting on the fuse, it is not easy to accurately put into the base socket, which can easily cause the drop-out fuse to fall off, causing damage to the equipment or injury to the personnel. Second, when taking down, the high-voltage pole is not easy to align the operation hole, and the operation is difficult. After alignment, as the angle becomes lower and lower, the existing high-voltage pole does not have a fixing device, which can easily cause falling, and in the case of light, it can affect the operation efficiency, and in the case of heavy, it can cause damage to the equipment and personnel. Third, the existing high-voltage pole is relatively heavy, and needs to be connected by several sections. It is easy to rust outdoors, causing difficulty in connection and taking down, and causing the operation personnel with small force to be unable to carry out this work, greatly prolonging the operation and replacement time of the equipment. SUMMARY

[0005] The present application aims to overcome the shortcomings of the prior art that the drop-out fuse operating rod is prone to misalignment of the fuse tube, difficult to control disassembly and assembly, and even falling of the fuse tube, and proposes a drop-out fuse operating rod.

[0006] The application adopts the following technical scheme: a drop-out fuse operating rod, which is characterized by comprising a multi-stage telescopic rod with an operating head fixed at the top, wherein the operating head comprises an operating top rod, an operating clamp fixing rod, a fuse tube operating clamp, an operating cross rod, an anti-falling hook mounting rod and an anti-falling hook; the operating top rod is fixed at the top of the multi-stage telescopic rod and vertically extends along the axial line thereof; the operating clamp fixing rod, the operating cross rod and the anti-falling hook mounting rod are all fixed at the bottom of the operating top rod; the operating clamp fixing rod, the operating cross rod and the anti-falling hook mounting rod respectively extend horizontally outward; the fuse tube operating clamp is mounted at the distal end of the operating clamp fixing rod; and the anti-falling hook is mounted at the distal end of the anti-falling hook mounting rod.

[0007] The effect of the scheme is that when the fuse tube is disassembled, the operating cross rod is inserted into the upper end operating ring of the fuse tube to pull the fuse tube out of the upper triggering head of the fuse, and then the fuse tube is taken off from the lower triggering head of the fuse by clamping the fuse tube with the fuse tube operating clamp (or clamping the lower end operating ring of the fuse tube with the anti-falling hook), thereby completing the disassembly of the fuse tube.

[0008] When the fuse tube is installed, the bottom end of the fuse tube can be hung on the lower triggering head of the fuse by clamping the fuse tube with the fuse tube operating clamp, and then the upper end of the fuse tube is inserted into the upper triggering head by inserting the operating cross rod into the upper end operating ring of the fuse tube, thereby completing the installation; or the lower end operating ring of the fuse tube can be buckled by the anti-falling hook to hang the bottom end of the fuse tube on the lower triggering head of the fuse, and then the upper end of the fuse tube is inserted into the upper triggering head by inserting the operating cross rod into the upper end operating ring of the fuse tube, thereby completing the installation; the operating top rod facilitates the top triggering head of the fuse to loosen the upper end of the fuse tube during disassembly; the device can adapt to different operating conditions and select different operating modes, the operating method is simple and the fuse tube is not easy to fall off, which can improve the work efficiency of the operator and improve the safety of on-site operation, thereby avoiding equipment damage or personal injury.

[0009] As a preferred scheme, a pull wire control assembly is arranged inside the multi-stage telescopic rod, and a pull wire device is arranged at the bottom of the multi-stage telescopic rod, wherein the pull wire device is used to control the opening and closing of the fuse tube operating clamp through the pull wire control assembly.

[0010] The effect of the scheme is that the pull wire device arranged at the bottom of the multi-stage telescopic rod controls the opening and closing of the fuse tube operating clamp, which can facilitate the operator to remotely clamp or release the fuse tube, thereby ensuring that the fuse tube does not fall off.

[0011] As a preferred solution, the pull wire control assembly comprises a pull wire, a guide wheel, a spring reel, a reel mounting seat, the multi-stage telescopic rod is a hollow structure, the guide wheel is fixedly installed in the top inner cavity of the multi-stage telescopic rod, the reel mounting seat is slidably installed in the bottom inner cavity of the multi-stage telescopic rod, the spring reel is installed on the reel mounting seat, one end of the pull wire is fixed on the fuse tube operating clamp after being horizontally led out of the multi-stage telescopic rod through the guide wheel, the other end of the pull wire is fixed on the spring reel, and the pull wire controller is used to control the reel mounting seat to slide up and down along the multi-stage telescopic rod.

[0012] The effect of this solution is that the reel mounting seat slides up and down along the multi-stage telescopic rod through the pull wire controller to open and close the fuse tube operating clamp through the pull wire, and the spring reel can adjust the length of the multi-stage telescopic rod to adaptively adjust the length of the pull wire.

[0013] As a preferred solution, the anti-falling hook comprises a vertical plate, a rotating connecting plate and a locking rod, the bottom of the vertical plate is fixed to the distal end of the anti-falling hook mounting rod, and the vertical plate extends vertically upward;

[0014] One end of the rotating connecting plate is installed on the top of the inner side of the vertical plate through a first rotating shaft, the rotating connecting plate is arranged in parallel with the plate surface of the vertical plate, the axis of the first rotating shaft is perpendicular to the plate surface of the vertical plate, and the rotating connecting plate can rotate circumferentially along the vertical direction of the vertical plate;

[0015] The locking rod is installed on the inner side of the rotating connecting plate through a second rotating shaft, the axis of the first rotating shaft is perpendicular to the axis of the second rotating shaft, the inner side of the rotating connecting plate is provided with a limiting groove extending in the length direction, the second rotating shaft is installed on the groove wall close to the first rotating shaft, one end of the locking rod is installed in the limiting groove, the other end of the locking rod extends outward in the horizontal direction, a spring is arranged between the groove wall away from the first rotating shaft and the locking rod, and the locking rod can rotate in the limiting groove.

[0016] The effect of this solution is that the direction of the rotating connecting plate is switched to switch the opening state and the closed state of the anti-falling hook, when the included angle between the rotating connecting plate and the locking rod is 90°, the locking rod points to the operating top rod, the operating top rod, the anti-falling hook mounting rod, the vertical plate and the locking rod form a closed lock, and the locking rod can only rotate downward to put in the fuse tube operating ring but cannot put out the fuse tube operating ring, which can be used for dismounting the fuse tube; when the included angle between the rotating connecting plate and the locking rod is 0°, the locking rod cannot form a closed lock with the operating top rod, the anti-falling hook mounting rod and the vertical plate, and a U-shaped clamping opening is formed between the operating top rod, the anti-falling hook mounting rod and the vertical plate, which can be used for mounting the fuse tube, and the U-shaped clamping opening can be used for mounting operation when the lower end of the fuse tube is clamped to prevent the fuse tube from falling.

[0017] As a preferred solution, the puller is a ring structure sheathed at the bottom of the multi-stage telescopic rod, the multi-stage telescopic rod is provided with a vertically extending sliding groove corresponding to the winding wheel mounting seat, the winding wheel mounting seat is clamped in the sliding groove through a mounting crossbar, the mounting crossbar is fixedly connected with the inner wall of the puller after horizontally penetrating out of the multi-stage telescopic rod, and the winding wheel mounting seat and the bottom end face of the inner cavity of the multi-stage telescopic rod are connected through a telescopic spring. The effect of this solution is that the telescopic spring can be used for automatic resetting of the puller.

[0018] As a preferred solution, the puller is further provided with a pay-off locking button for locking the spring winding wheel. The effect of this solution is that the pay-off locking button can lock the spring winding wheel to limit the length of the pull wire, so that the puller can better control the opening and closing state of the operation clamp of the fuse tube.

[0019] As a preferred solution, the multi-stage telescopic rod is formed by combination of three hollow insulating sleeve rods, and the three insulating sleeve rods are gradually contracted. The effect of this solution is that the length of the multi-stage telescopic rod can be adaptively adjusted to adapt to different working conditions, and the insulating rod can prevent the operator from being electrocuted.

[0020] As a preferred solution, the included angle between the operation clamp fixing rod and the operation crossbar and the included angle between the operation crossbar and the anti-falling hook mounting rod are both right angles. The effect of this solution is that the components can be maximally separated to ensure a good operation space.

[0021] As a preferred solution, the operation top rod, the operation clamp fixing rod, the operation crossbar and the anti-falling hook mounting rod are integrally formed. The effect of this solution is to ensure the stability of the equipment and prevent the occurrence of sliding rod during actual operation due to loose connection.

[0022] Beneficial effects: The drop-out fuse operating rod has simple structure, multifunctional integration, can enable the operator to quickly and accurately complete the disassembly and installation of the fuse tube without falling of the fuse tube, can effectively improve work efficiency, and can ensure the safety of the operator and the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 FIG. 1 is a structural overall schematic diagram of the drop-out fuse operating rod;

[0024] Figure 2 FIG. 3 is a structural schematic diagram of the operating head 1 of the drop-out fuse operating rod;

[0025] Figure 3 FIG. 4 is a perspective view of the top structure of the drop-out fuse operating rod;

[0026] Figure 4The figure is a perspective view of the bottom structure of a drop-out fuse operating rod of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below with reference to the accompanying drawings:

[0028] Example: As shown in the attached Figures 1-4 As shown, a drop-type fuse operating rod comprises a multi-stage telescopic rod 2 with an operating head 1 fixedly connected to the top, the operating head 1 comprises an operating top rod 11, an operating clamp fixing rod 12, a fuse operating clamp 13, an operating cross rod 14, an anti-drop hook mounting rod 15 and an anti-drop hook 16, the operating top rod 11 is fixed to the top of the multi-stage telescopic rod 2 and extends vertically upward along its axis, the proximal ends of the operating clamp fixing rod 12, the operating cross rod 14, and the anti-drop hook mounting rod 15 are all fixed to the bottom of the operating top rod 11, the operating clamp fixing rod 12, the operating cross rod 14, and the anti-drop hook mounting rod 15 extend outward in the horizontal direction respectively, the fuse operating clamp 13 is installed at the distal end of the operating clamp fixing rod 12, and the anti-drop hook 16 is installed at the distal end of the anti-drop hook mounting rod 15.

[0029] A wire pulling control assembly is provided inside the multi-stage telescopic rod 2 , and a wire pulling device 3 is provided at the bottom of the multi-stage telescopic rod 2 . The wire pulling device 3 is used to control the opening and closing of the melting tube operating clamp 13 through the wire pulling control assembly.

[0030] Specifically, the wire pulling control assembly includes a wire pulling wire 21, a guide wheel 22, a spring winding wheel 23, and a winding wheel mounting seat 24. The multi-stage telescopic rod 2 is a hollow structure. The guide wheel 22 is fixedly installed in the top inner cavity of the multi-stage telescopic rod 2. The winding wheel mounting seat 24 is slidably installed in the bottom inner cavity of the multi-stage telescopic rod 2. The spring winding wheel 23 is installed on the winding wheel mounting seat 24. One end of the wire pulling wire is turned horizontally through the guide wheel 22 to pass through the multi-stage telescopic rod 2 and is fixed on the melting tube operating clamp 13. The other end is fixedly wound on the spring winding wheel 23. The wire pulling device 3 is used to control the winding wheel mounting seat 24 to slide up and down along the multi-stage telescopic rod 2.

[0031] As attached Figure 2As shown, the anti-falling hook 16 includes a vertical plate 161, a rotating connecting plate 162 and a locking rod 163. The vertical plate 161 is fixed at the bottom of the anti-falling hook mounting rod 15, and extends vertically upward. The rotating connecting plate 162 is installed at the top of the inner side of the vertical plate 161 through a first rotating shaft, and is arranged in parallel with the plate surface of the vertical plate 161. The first rotating shaft is perpendicular to the plate surface of the vertical plate 161, and the rotating connecting plate 162 can rotate circumferentially along the vertical direction of the vertical plate 161. The locking rod 163 is installed on the inner side of the rotating connecting plate 162 through a second rotating shaft, and the first rotating shaft is perpendicular to the second rotating shaft. The inner side of the rotating connecting plate 162 is provided with a limiting slot extending in the length direction, and the second rotating shaft is installed on the slot wall close to the first rotating shaft. One end of the locking rod 163 is installed in the limiting slot, and the other end of the locking rod 163 extends outward in the horizontal direction. A return spring is arranged between the slot wall away from the first rotating shaft and the locking rod 163, and the locking rod 163 can rotate in the limiting slot. In specific use, the application structure of the anti-falling hook 16 is controlled by the direction of the rotating connecting plate 162.

[0032] Further, the puller 3 is a ring structure sleeved on the bottom of the multi-stage telescopic rod 2. The bottom of the multi-stage telescopic rod 2 is provided with a vertical extending sliding groove corresponding to the winding wheel mounting seat 24. The winding wheel mounting seat 24 is clamped in the sliding groove through the installation horizontal rod, and the installation horizontal rod is fixedly connected with the inner wall of the puller 3 after horizontally penetrating through the multi-stage telescopic rod 2. The winding wheel mounting seat 24 and the bottom end surface of the inner cavity of the multi-stage telescopic rod 2 are connected through the extension spring 25. The puller 3 is also provided with a pay-off locking button for locking the spring winding wheel 23, thereby limiting the length of the pull wire and ensuring the control effect of the puller 3.

[0033] In the embodiment, the multi-stage telescopic rod 2 is preferably composed of three hollow insulating sleeve rods, and the three insulating sleeve rods are gradually contracted. The length of each insulating sleeve rod is 1 meter, and the number of insulating sleeve rods can be combined according to specific working conditions during specific implementation.

[0034] Further, in order to maximize the operation space, the included angle between the operation clamp fixed rod 12 and the operation horizontal rod 14 and the included angle between the operation horizontal rod 14 and the anti-falling hook mounting rod 15 are both right angles during specific implementation.

[0035] Further, in order to prevent the operation head components from loosening and causing the sliding rod during actual operation, the operation top rod 11, the operation clamp fixed rod 12, the operation horizontal rod 14 and the anti-falling hook mounting rod 15 are integrally formed by molding.

[0036] The specific use method of the device is as follows:

[0037] The operation method for disassembling the melting pipe is as follows:

[0038] The fuse tube is pulled out of the upper contact head of the fuse by inserting the operating crossbar 14 into the upper end operating ring of the fuse tube and pulling the fuse tube. If the upper contact head needs to be pushed up to remove the fuse tube, the operating push rod 11 can be used to push up first. Then, the direction of the connecting plate 162 is switched, and the locking rod 163 is directed to the operating push rod 11. The operating push rod 11, the anti-falling hook mounting rod 15, the vertical plate 161, and the locking rod 163 form a closed lock, and the locking rod 163 can only be turned down. Then, the bottom end operating ring of the fuse tube can be placed in the closed lock formed, and then the multi-stage telescopic rod 2 is lifted upwards to remove the fuse tube from the lower contact head of the fuse, and the disassembly operation of the fuse tube is completed.

[0039] Fuse tube installation operation method 1: The fuse tube is clamped by the fuse tube operating clamp 13 to be inverted, and then the lower end of the fuse tube is hung on the lower contact head of the fuse and moved away from the operating rod. Then, the upper end operating ring of the fuse tube is pushed by the operating crossbar 14, and the upper end of the fuse tube is pushed into the clamping groove of the upper contact head, and the installation operation is completed.

[0040] Fuse tube installation operation method 2: The included angle between the rotating connecting plate 162 and the locking rod 163 is adjusted to 0°, and the locking rod 163 cannot form a closed lock with the operating push rod 11, the anti-falling hook mounting rod 15, and the vertical plate 161, but forms a U-shaped clamping hole. The lower end of the fuse tube is hung on the lower contact head of the fuse by clamping the lower end operating ring of the fuse tube with the U-shaped clamping hole (which can effectively prevent the fuse tube from falling), and then the operating rod is moved away. Then, the upper end operating ring of the fuse tube is clamped by the U-shaped clamping hole, and the upper end of the fuse tube is pushed into the clamping groove of the upper contact head (or the operating crossbar 14 can be directly used to push), and the installation operation is completed.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present application, and those of ordinary skill in the art can make various similar modifications under the inspiration of the present application without departing from the purpose and scope of the present application. Such changes fall within the scope of the present application.

Claims

1. A drop-out fuse operating rod, characterized in that: The invention relates to a multi-stage telescopic rod (2) having an operating head (1) fixedly connected to the top thereof, wherein the operating head (1) comprises an operating top rod (11), an operating clamp fixing rod (12), a melting tube operating clamp (13), an operating cross rod (14), an anti-drop hook mounting rod (15) and an anti-drop hook (16); the operating top rod (11) is fixed to the top of the multi-stage telescopic rod (2) and extends vertically upward along its axis; the proximal ends of the operating clamp fixing rod (12), the operating cross rod (14) and the anti-drop hook mounting rod (15) are all fixed to the bottom of the operating top rod (11); the operating clamp fixing rod (12), the operating cross rod (14) and the anti-drop hook mounting rod (15) extend outwardly in the horizontal direction respectively; the melting tube operating clamp (13) is mounted at the distal end of the operating clamp fixing rod (12); and the anti-drop hook (16) is mounted at the distal end of the anti-drop hook mounting rod (15); A wire pulling control assembly is provided inside the multi-stage telescopic rod (2), and a wire pulling device (3) is provided at the bottom of the multi-stage telescopic rod (2). The wire pulling device (3) is used to control the opening and closing of the melting tube operating clamp (13) through the wire pulling control assembly; The wire pulling control assembly includes a wire pulling wire (21), a guide wheel (22), a spring winding wheel (23), and a winding wheel mounting seat (24); the multi-stage telescopic rod (2) is a hollow structure; the guide wheel (22) is fixedly mounted in the top inner cavity of the multi-stage telescopic rod (2); the winding wheel mounting seat (24) is slidably mounted in the bottom inner cavity of the multi-stage telescopic rod (2); the spring winding wheel (23) is mounted on the winding wheel mounting seat (24); one end of the wire pulling wire passes through the guide wheel (22) and is turned horizontally to pass through the multi-stage telescopic rod (2) and is then fixed on the melting tube operating clamp (13); the other end is fixedly wound on the spring winding wheel (23); the wire pulling device (3) is used to control the winding wheel mounting seat (24) to slide up and down along the multi-stage telescopic rod (2); The anti-drop hook (16) comprises a vertical plate (161), a rotating connecting plate (162) and a locking rod (163); the bottom of the vertical plate (161) is fixed to the distal end of the anti-drop hook mounting rod (15); and the vertical plate (161) extends vertically upward; One end of the rotating connecting plate (162) is mounted on the top of the inner side surface of the vertical plate (161) through a first rotating shaft. The rotating connecting plate (162) is arranged parallel to the plate surface of the vertical plate (161). The axis of the first rotating shaft is perpendicular to the plate surface of the vertical plate (161). The rotating connecting plate (162) can rotate circumferentially along the vertical direction of the vertical plate (161). The locking rod (163) is installed on the inner side surface of the rotating connecting plate (162) through the second rotating shaft, the first rotating shaft is perpendicular to the axis of the second rotating shaft, the inner side surface of the rotating connecting plate (162) is provided with a limiting groove extending along its length direction, the second rotating shaft is installed on the groove wall of the limiting groove close to the first rotating shaft, one end of the locking rod (163) is installed in the limiting groove, and the other end of the locking rod (163) extends outward in the horizontal direction, a reset spring is provided between the groove wall of the limiting groove away from the first rotating shaft and the locking rod (163), and the locking rod (163) can rotate in the limiting groove.

2. The drop-out fuse operating rod according to claim 1, characterized in that: The wire puller (3) is an annular structure that is sheathed on the bottom of the multi-stage telescopic rod (2). A vertically extending sliding groove is provided at the bottom of the multi-stage telescopic rod (2) corresponding to the winding wheel mounting seat (24). The winding wheel mounting seat (24) is clamped in the sliding groove through a mounting cross bar. The mounting cross bar passes through the multi-stage telescopic rod (2) horizontally and is fixedly connected to the inner wall of the wire puller (3). The winding wheel mounting seat (24) is connected to the bottom end face of the inner cavity of the multi-stage telescopic rod (2) through a telescopic spring (25).

3. The drop-out fuse operating rod according to claim 2, characterized in that: The wire puller (3) is also provided with a wire-releasing locking button, which is used to lock the spring winding wheel (23).

4. The drop-out fuse operating rod according to claim 1, characterized in that: The multi-stage telescopic rod (2) is formed by combining three hollow insulating sleeve rods, and the three insulating sleeve rods are contracted step by step.

5. The drop-out fuse operating rod according to claim 1, characterized in that: The angle between the operating clamp fixing rod (12) and the operating cross rod (14), and the angle between the operating cross rod (14) and the anti-drop hook installation rod (15) are both right angles.

6. The drop-out fuse operating rod according to claim 1, characterized in that: The operating top rod (11), the operating clamp fixing rod (12), the operating cross rod (14), and the anti-drop hook mounting rod (15) are an integrally formed structure.

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