Tubular busbar holding clamp replacement tool and method

Abstract

The invention relates to the technical field of tubular busbar holding clamp replacement, and provides a tubular busbar holding clamp replacement tool and method. The tool is composed of a clamping plate, a force unloading lead screw, a fixing base, a driving rod, an angle adjusting device and a hoop. The unloading lead screw achieves linear stretching and retracting through worm and worm wheel transmission, the angle adjusting device can be clamped and locked at multi-angle positions, and a clamp is convenient to install. After the tool is respectively fixed with the V-shaped insulator end plate and the tubular bus, the tubular bus load borne by the old holding clamp is stably transferred to the unloading screw rod through the driving mechanism, so that the tubular bus is stable in the processes of dismantling the old holding clamp and installing the new holding clamp and the old holding clamp. The replacement method depends on the device, load unloading of the old holding clamp, installation of the new holding clamp and controllable operation can be achieved, the risks of torsion, sagging, deviation and the like of the bus are effectively avoided, and the replacement efficiency and safety of the holding clamp are improved. The device is compact in structure, high in adaptability and suitable for rapid and safe replacement of various tubular bus holding clamps in a transformer substation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe-type bus clamp replacement, and in particular to a pipe-type bus clamp replacement tool and method. BACKGROUND

[0002] As the core conductive and support component of the primary equipment of a substation, the running safety of the pipe-type bus depends largely on the rigid support provided by the bus clamp. The pipe-type bus clamp is subjected to multiple effects of thermal expansion and contraction, electric force impact, wind load, and environmental corrosion for a long time, and is prone to defects such as rust, loose bolts, attenuation of clamping force, cracks in fittings, and fatigue damage. In order to ensure the safe operation of the substation, the clamp must be subjected to periodic inspection and necessary replacement operation according to the regulations.

[0003] The existing clamp replacement operation adopts the process of "hoisting the pipe-type bus - loosening the old clamp - temporarily supporting the pipe-type bus and insulator string - removing the old clamp - installing the new clamp - resetting and fastening". In this process, the bus needs to be supported by the temporary support structure, and it is essentially in a semi-suspended, non-rigid fixed state, which has the following problems: After the old clamp is loosened, the bus relies on the temporary support to maintain its position, the stress path changes, and it is easy to sway, twist or droop due to wind load, operation disturbance or inertial force.

[0004] The old clamp often still bears a large load after long-term operation, and the loosening or disassembly process needs to overcome the clamping force, friction force and residual stress, which is laborious and has certain safety risks.

[0005] The bus is not effectively locked, and the posture of the bus is easy to deviate during the installation of the new clamp, which causes difficult alignment, uneven clamping force and repeated adjustment, resulting in prolonged operation time.

[0006] In the high-altitude operation scenario, the bus swing and the sudden change of the force on the clamp may cause the installation tool to slip, the components to collide, and there is a high safety risk.

[0007] Therefore, the traditional clamp replacement method has obvious deficiencies in bus fixation reliability, operation difficulty, safety and construction efficiency, and there is an urgent need for a replacement tool and a matching construction method that can keep the bus stable during the replacement of the clamp, reduce the disassembly resistance, improve the alignment accuracy and improve the operation safety, to solve the problems of unstable structure, difficult disassembly and safety risks in the prior art. SUMMARY

[0008] The purpose of the present application is to solve the problems in the prior art and provide a pipe-type bus clamp replacement tool and method to solve the problems in the background art.

[0009] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: The utility model provides a kind of tubular bus clamp replacement tool, including: with the end plate of V-shaped insulator connection card board, unloading screw rod, fixed seat, drive rod, two angle adjusting devices separately in fixed seat both sides, the clamp of being equipped with every angle adjusting device far from fixed seat side;The clamp is connected with tubular bus; The unloading screw rod is installed on the top of the fixed seat, and the unloading screw rod comprises a connecting head fixedly connected with the bottom of the card board, a screw rod body fixedly connected with one end of the connecting head, a worm wheel rotatably connected with the screw rod body, and a limiting head arranged at the end of the screw rod body;The worm wheel is rotatably connected to the top of the fixed seat. The drive rod comprises a worm gear installed on the top of the fixed seat and a drive block arranged at one end of the worm gear;The worm gear is engaged with the worm wheel;One end of the drive block penetrates through the fixed seat.

[0010] Preferably, the angle adjusting device comprises a clamping seat fixedly connected with the fixed seat, a rotating shaft screw fixedly connected with one side of the clamping seat, a clamping table slidably connected with the rotating shaft screw, and a fixed nut sleeved at the end of the rotating shaft screw;The opposite side of the clamping table and the clamping seat is provided with a plurality of grooves arranged in a circumferential array along the axis thereof;The opposite side of the clamping table and the clamping seat is provided with a plurality of protrusions arranged in a circumferential array along the axis thereof;The clamping table is clamped with the clamping seat.

[0011] Preferably, the positioning hole corresponds to the connecting hole of the V-shaped insulator end plate;The bottom of the card board is provided with an ear;At least two through holes are arranged on the ear;A through hole corresponding to the two through holes of the ear is arranged on the connecting head, and a limiting bolt is sleeved in the two through holes.

[0012] Preferably, the bottom of the card board is provided with an ear;One through hole is arranged on the ear, and an annular key groove is arranged around the through hole;A through hole corresponding to the through hole of the ear is arranged on the connecting head;A cylindrical key groove is formed at a position corresponding to the annular key groove of the connecting head;A limiting bolt is sleeved in the through hole;A locking key is arranged on the limiting bolt, and the locking key is in abutment with the annular key groove through the cylindrical key groove.

[0013] Preferably, the annular key groove is a plurality of cylindrical key grooves arranged in a circumferential array.

[0014] Preferably, the card board is a U-shaped plate.

[0015] Preferably, the worm gear is rotatably connected with the fixed seat through a positioning bearing, the worm is rotatably connected with the fixed seat through a rotating bearing, and the drive block is a hexagonal prism.

[0016] Another object of the present application is to provide a method for replacing the tubular bus clamp using the above-mentioned tubular bus clamp replacement tool, comprising the following steps: S1, the staff on the ground connects the lifting lug provided at the bottom of the clamping plate with the connecting head through two limiting bolts; loosen the fixing nut to make the clamping base and the rotating shaft screw rotate and connect; S2, the staff connects the clamping plate with the V-shaped insulator end plate by using the platform car; and fixes and connects the clamp with the tubular busbar; S3, after the tubular busbar is fixed and connected with the clamp, the fixing nut is locked to make the clamping base and the clamping base clamp; S4, draw a line at the old clamp position of the tubular busbar, and then rotate the driving block by using the electric wrench to transfer the load on the old clamp to the unloading screw rod; S5, after the load is transferred, loosen the old clamp bolt and remove the old clamp; S6, install the new clamp at the line drawn at the old clamp position of the tubular busbar, and then connect the new clamp with the V-shaped insulator end plate; S7, after the new clamp is installed, rotate the driving block by using the electric wrench to transfer the load on the unloading screw rod to the new clamp, and remove the tubular busbar clamp replacement tool.

[0017] Another purpose of the present application is to provide a method for replacing the tubular busbar clamp by using the tubular busbar clamp replacement tool, which comprises the following steps: S1, the staff on the ground connects the lifting lug provided at the bottom of the clamping plate with the connecting head through two limiting bolts; loosen the fixing nut to make the clamping base and the rotating shaft screw rotate and connect; S2, the staff connects the clamping plate with the V-shaped insulator end plate by using the platform car; and fixes and connects the clamp with the tubular busbar, slides the clamp away from the clamping plate to the limit, and then fixes and connects the clamp with the tubular busbar to make the included angle between the unloading screw rod and the tubular busbar be the smallest; S3, after the tubular busbar is fixed and connected with the clamp, the fixing nut is locked to make the clamping base and the clamping base clamp; S4, draw a line at the old clamp position of the tubular busbar, and then rotate the driving block by using the electric wrench to transfer the load on the old clamp to the unloading screw rod; S5, after the load is transferred, loosen the old clamp bolt and remove the old clamp; S6, install the new clamp at the line drawn at the old clamp position of the tubular busbar, and then connect the new clamp with the V-shaped insulator end plate; S7, after the new clamp is installed, rotate the driving block by using the electric wrench to transfer the load on the unloading screw rod to the new clamp, and remove the tubular busbar clamp replacement tool.

[0018] The present application discloses a tubular busbar clamp replacement tool and method, which has the following beneficial effects.

[0019] The application realizes controllable transfer of load between old clamp, pipe type bus clamp replacement tool and new clamp through the force relief lead screw, worm and worm gear transmission mechanism, angle adjusting device and clamp. The force relief lead screw has self-locking and force amplification characteristics, can stably connect the pipe type bus, and avoids sinking, twisting or swinging of the pipe type bus due to sudden unloading in the traditional replacement method. The angle adjusting device adopts a groove-bulge disc tooth type clamping structure, which can facilitate connection of the clamp with the pipe type bus, cooperate with the locking key passing through the cylindrical key groove and abutting against the annular round key groove at different positions, and minimize the included angle between the force relief lead screw and the bus axis. The reduced included angle can reduce the shear component in the load transfer process, improve the axial consistency of force transmission, make the unloading process more stable, and avoid lateral swinging and displacement of the bus in the clamp removal stage.

[0020] The application can reduce manual operation strength, avoid wind swinging or displacement of the bus in the clamp removal stage, make the clamp replacement operation more safe, efficient and controllable, and has engineering application value. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 FIG. 1 is a schematic diagram of the overall structure of the pipe type bus clamp replacement tool of embodiment 1-2 of the application.

[0022] Fig. 2 FIG. 2 is a side view schematic diagram of the pipe type bus clamp replacement tool of embodiment 1-2 of the application.

[0023] Fig. 3 FIG. 3 is a cutaway structure schematic diagram of the pipe type bus clamp replacement tool of embodiment 1-2 of the application.

[0024] Fig. 4 FIG. 4 is a side view schematic diagram of the pipe type bus clamp replacement tool of embodiment 3 of the application.

[0025] Fig. 5 FIG. 5 is a schematic diagram of the connection structure of the clamping plate and the connecting head of embodiment 3 of the application.

[0026] Fig. 6 FIG. 6 is a side view schematic diagram of the clamping plate of embodiment 3 of the application.

[0027] In the drawings: 1, clamping plate; 101, lifting lug; 1011, annular round key groove; 102, positioning hole; 103, limiting bolt; 1031, locking key; 2, force relief lead screw; 201, connecting head; 202, lead screw body; 203, worm gear; 204, positioning bearing; 205, limiting head; 3, fixed seat; 301, cover body; 4, angle adjusting device; 401, clamping seat; 402, clamping table; 403, rotating shaft screw; 404, fixed nut; 5, connecting rod; 6, clamp; 7, driving rod; 701, worm; 702, rotating bearing; 703, driving block. DETAILED DESCRIPTION

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Example 1 Please refer to Figs. 1-3 A tool for replacing tubular busbar clamps includes: a clamping plate 1 connected to a V-shaped insulator end plate, a stress relief screw 2, a fixed base 3, a drive rod 7, two angle adjustment devices 4 respectively disposed on both sides of the fixed base 3, and a clamp 6 disposed on the side of each angle adjustment device 4 away from the fixed base 3; the clamp 6 is connected to the tubular busbar. The clamp 6 is connected to the fixed seat 3 via the connecting rod 5.

[0031] The unloading screw 2 is installed on the top of the fixed base 3. The unloading screw 2 includes: a connector 201 fixedly connected to the bottom of the clamping plate 1, a screw body 202 fixedly connected to one end of the connector 201, a worm gear 203 rotatably connected to the screw body 202, and a limiting head 205 located at the end of the screw body 202; the worm gear 203 is rotatably connected to the top of the fixed base 3; the screw body 202 and the worm gear 203 are threadedly engaged. The drive rod 7 includes: a worm 701 mounted on the top of the fixed base 3, and a drive block 703 located at one end of the worm 701; the worm 701 meshes with the worm wheel 203; one end of the drive block 703 extends out of the fixed base 3.

[0032] In this embodiment, the top of the fixed base 3 is fixed with a cover 301 by bolts, and the worm gear 203 and worm 701 rotate in the cavity formed by the cover 301 and the fixed base 3.

[0033] When it is necessary to transfer the load from the old clamp to the unloading screw 2 or to the new clamp, simply use an electric wrench to drive the drive block 703 in both forward and reverse directions. When the electric wrench drives the drive block 703, the drive rod 7 drives the worm 701 to rotate, the worm 701 drives the worm wheel 203 to rotate, the inner wall of the worm wheel 203 meshes with the screw body 202, and the worm wheel 203 drives the screw to rotate, thereby controlling the relative distance between the clamp 6 and the clamp plate 1 to transfer the load.

[0034] In this embodiment, the structure of the force-releasing screw rod 2 driven by the worm 701-worm gear 203 is adopted. By converting the rotary motion into the axial extension and contraction of the screw rod, the force-releasing process has high mechanical advantages and self-locking characteristics, can smoothly take over the original load of the busbar, and realizes the step-by-step transfer from the old clamp to the force-releasing screw rod 2 to the new clamp. The entire process does not need to use a crane or other equipment to directly bear the weight of the busbar, effectively avoiding the safety risks caused by the instantaneous unloading, rebound or sinking of the busbar in the traditional method.

[0035] As preferred, in this embodiment, the angle adjusting device 4 comprises a clamping seat 401 fixedly connected with the fixed seat 3, a rotating shaft screw 403 fixedly connected on one side of the clamping seat 401, a clamping table 402 in sliding connection with the rotating shaft screw 403, and a fixed nut 404 sleeved on the end of the rotating shaft screw 403. The opposite sides of the clamping seat 401 and the clamping table 402 are provided with a plurality of grooves arranged in a circumferential array along the axis thereof. The opposite sides of the clamping table 402 and the clamping seat 401 are provided with a plurality of protrusions arranged in a circumferential array along the axis thereof. The clamping seat 401 and the clamping table 402 are clamped.

[0036] As preferred, in this embodiment, the clamping plate 1 is a U-shaped plate.

[0037] As preferred, in this embodiment, the worm gear 203 is rotatably connected with the fixed seat 3 through a positioning bearing 204, and the worm 701 is rotatably connected with the fixed seat 3 through a rotating bearing 702. The driving block 703 is a hexagonal prism.

[0038] Embodiment 2 Please refer to Figs. 1-3 , based on embodiment 1, as preferred, in this embodiment, the positioning hole 102 corresponds to the V-shaped insulator end plate connecting hole; the clamping plate 1 is provided with an ear 101 at the bottom; the ear 101 is provided with at least two through holes; the connecting head 201 is provided with through holes corresponding to the two through holes of the ear 101, and the two through holes are both sleeved with a limiting bolt 103.

[0039] Embodiment 3 Please refer to Figs. 4-6 , based on embodiment 1, in order to improve the stability during load transfer, as preferred, in this embodiment, the clamping plate 1 is provided with an ear 101 at the bottom; the ear 101 is provided with a through hole, and an annular round key groove 1011 is provided around the through hole; the connecting head 201 is provided with a through hole corresponding to the through hole of the ear 101; a cylindrical key groove is provided at the position corresponding to the annular key groove of the connecting head 201; a limiting bolt 103 is sleeved in the through hole; the limiting bolt 103 is provided with a locking key 1031, and the locking key 1031 passes through the cylindrical key groove and abuts against the annular round key groove 1011.

[0040] As preferred, in this embodiment, the annular round key groove 1011 is formed by a plurality of equal-diameter cylindrical key grooves arranged in a circumferential array.

[0041] In this embodiment, in order to improve the stability during load transfer, the angle between the unloading screw rod 2 and the tubular busbar should be as small as possible. In use, the clamp 6 is slidably connected with the tubular busbar, and the clamp 6 is slid to the limit away from the clamping plate 1. In this process, the connecting head 201 is rotatably connected with the lifting lug 101 at the bottom of the clamping plate 1, and the clamping seat 401 and the clamping table 402 are rotatable, so that the clamp 6 can slide along the tubular busbar. When sliding in place, the clamp 6 is fixedly connected with the tubular busbar, the locking limiting bolt 103 is locked, and the locking key 1031 is in abutment with the annular circular key groove 1011 through the cylindrical key groove. The locking limiting bolt 103 fixes the nut 404, and the clamping seat 401 and the clamping table 402 are clamped. At this time, the angle between the unloading screw rod 2 and the tubular busbar is in the minimum state.

[0042] In this embodiment, the locking key 1031 is in abutment with the annular circular key groove 1011 at different positions through the cylindrical key groove. The recess-protrusion disc tooth type limiting structure is used to realize the quick adjustment and rigid locking of the busbar clamping angle, so that the angle between the unloading screw rod 2 and the busbar axis is minimized. The reduction of the included angle can reduce the shear component during load transfer, improve the axial consistency of force transmission, make the unloading process more stable, and avoid the lateral swing and displacement of the busbar during the unloading and loading processes.

[0043] Embodiment 4 Please refer to Figs. 1-3 Based on embodiment 1, this embodiment provides a method for replacing the tubular busbar clamp using the above-mentioned tubular busbar clamp replacement tool, which comprises the following steps: S1, the staff connects the connecting head 201 with the lifting lug 101 provided at the bottom of the clamping plate 1 through two limiting bolts 103 on the ground; loosen the fixing nut 404, so that the clamping table 402 is rotatably connected with the rotating shaft screw 403; S2, the staff connects the clamping plate 1 with the V-shaped insulator end plate by using a platform car; the clamp 6 is fixedly connected with the tubular busbar; during the process of fixing the clamp 6 with the tubular busbar, the clamping table 402 can be rotated along the rotating shaft screw 403, so that the clamp 6 and the tubular busbar can be locked by bolts first, and then the clamping table 402 is rotated to make the recesses of the clamping seat 401 and the clamping table 402 abut against the protrusions; so as to improve the installation convenience of the clamp 6 and the tubular busbar, without hard bending the clamp 6 during installation.

[0044] S3, after the tubular busbar is fixedly connected with the clamp 6, the fixing nut 404 is locked to make the clamping seat 401 and the clamping table 402 clamped and locked; S4, draw a line at the position of the old clamp of the tubular busbar, and then transfer the load on the old clamp to the unloading screw rod 2 by rotating the driving block 703 by an electric wrench; the load transfer path is 'busbar→ clamp 6→ angle adjusting assembly→ fixed seat 3→ unloading screw rod 2'; S5, after the load transfer is completed, the old clamp bolt is loosened, and the old clamp is removed; S6, the new clamp is installed at the old clamp position of the tubular bus, and then the new clamp is connected with the V-shaped insulator end plate; S7, after the new clamp is installed, the load on the unloading screw rod 2 is transferred to the new clamp by rotating the driving block 703 through the electric wrench, and the tubular bus clamp replacement tool is removed.

[0045] Example 4 Please refer to Figs. 4-6 Based on example 1, the present embodiment provides a method for replacing the tubular bus clamp using the above tubular bus clamp replacement tool, comprising the following steps: S1, the staff connects the connecting head 201 with the lifting lug 101 provided at the bottom of the clamping plate 1 through the limiting bolt 103, so that the locking key 1031 does not abut against the annular circular key groove 1011; loosen the fixing nut 404, and the clamping block 402 is rotatably connected with the rotating shaft screw 403; S2, the staff connects the clamping plate 1 with the V-shaped insulator end plate by using the platform car; the clamping hoop 6 is slidably connected with the tubular bus, and after sliding the clamping hoop 6 to the limit away from the clamping plate 1, the clamping hoop 6 is fixedly connected with the tubular bus, so that the included angle between the unloading screw rod 2 and the tubular bus is in the minimum state; It should be noted that after the clamping hoop 6 is slidably connected with the tubular bus, the clamping hoop 6 is sleeved with the tubular bus but not locked, and the clamping hoop 6 is slid to the limit away from the clamping plate 1, and in this process, the connecting head 201 can be rotatably connected with the lifting lug 101 at the bottom of the clamping plate 1, the clamping block 401 and the clamping block 402 can rotate, so that the clamping hoop 6 can slide along the tubular bus, and when it is slid in place, the clamping hoop 6 is fixedly connected with the tubular bus, the locking limiting bolt 103 is locked, and the locking key 1031 abuts against the annular circular key groove 1011 through the cylindrical key groove; the locking limiting bolt 103 fixes the nut 404, and the clamping block 401 and the clamping block 402 are clamped, and at this time, the included angle between the unloading screw rod 2 and the tubular bus is in the minimum state.

[0046] S3, after the tubular bus is fixedly connected with the clamping hoop 6, the locking limiting bolt 103 is locked, and the locking key 1031 abuts against the annular circular key groove 1011 through the cylindrical key groove; the locking limiting bolt 103 fixes the nut 404, and the clamping block 401 and the clamping block 402 are clamped; S4, the old clamp position of the tubular bus is marked, and then the load on the old clamp is transferred to the unloading screw rod 2 by rotating the driving block 703 through the electric wrench, and since the included angle between the unloading screw rod 2 and the tubular bus is small at this time, the shear force is small when the load is transferred, and the stability is good when the load is transferred; S5, after the load transfer is completed, the old clamp bolt is loosened, and the old clamp is removed; S6, install the new clamp at the position of the old clamp of the tubular bus, and then connect the new clamp with the end plate of the V-shaped insulator; S7, after the installation of the new clamp, rotate the driving block 703 by the electric wrench to transfer the load on the unloading screw rod 2 to the new clamp, and remove the clamp replacement tool of the tubular bus.

[0047] The whole load transfer process is realized by the electric wrench driving, without manual hard prying or supporting the bus, and the operation strength is reduced. The replacement method has strong repeatability, and the risk of bus damage or clamp installation deviation caused by improper manual operation is reduced.

[0048] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. The substitution can be the substitution of part of the structure, device, method step, or the complete technical solution. According to the technical solution and the inventive concept of the present application, equivalent substitution or change should be covered within the protection scope of the present application.

Claims

1. A tube bus bar clamp replacement tool and method, characterized by, The utility model relates to a V-shaped insulator end plate connecting device, including: The clamping plate connected with the V-shaped insulator end plate, the force relieving screw rod, the fixed seat, the driving rod, the two angle adjusting devices separately arranged on the two sides of the fixed seat, the clamping hoop arranged on the side far from the fixed seat of each angle adjusting device; The clamping hoop is connected with the tubular bus; The force relieving screw rod is installed on the top of the fixed seat, and the force relieving screw rod includes the connecting head fixedly connected with the bottom of the clamping plate, the screw rod body fixedly connected with one end of the connecting head, the worm wheel rotationally connected with the screw rod body, and the limiting head arranged at the tail end of the screw rod body; The worm wheel is rotationally connected on the top of the fixed seat; The driving rod includes the worm gear installed on the top of the fixed seat and the driving block arranged on one end of the worm gear; The worm gear is engaged with the worm wheel; One end of the driving block passes through the fixed seat.

2. A tube bus bar clamp replacement tool according to claim 1, wherein A plurality of positioning holes are arranged on the clamping plate, and the angle adjusting device includes the clamping seat fixedly connected with the fixed seat, the rotating shaft screw fixedly connected with one side of the clamping seat, the clamping table slidingly connected with the rotating shaft screw, and the fixed nut sleeved at the tail end of the rotating shaft screw; A plurality of grooves are arranged on the opposite side of the clamping seat and the clamping table along the axis of the clamping seat and the clamping table; A plurality of convex blocks are arranged on the opposite side of the clamping seat and the clamping table along the axis of the clamping seat and the clamping table; The clamping seat and the clamping table are clamped.

3. The pipe bus bar clamp replacement tool of claim 2, wherein, The positioning holes correspond to the connecting holes of the V-shaped insulator end plate; The bottom of the clamping plate is provided with an ear; At least two through holes are arranged on the ear; The connecting head is provided with through holes corresponding to the two through holes of the ear, and limiting bolts are sleeved in the two through holes.

4. The pipe bus bar clamp replacement tool of claim 2, wherein, The bottom of the clamping plate is provided with an ear; One through hole is arranged on the ear, and an annular key groove is arranged on the periphery of the through hole; The connecting head is provided with a through hole corresponding to the through hole of the ear; A cylindrical key groove is formed in the corresponding position of the connecting head and the annular key groove; A limiting bolt is sleeved in the through hole; The limiting bolt is provided with a locking key, and the locking key passes through the cylindrical key groove and abuts against the annular key groove.

5. The pipe bus duct clamp replacement tool of claim 4, wherein, The annular key groove is formed by a plurality of equidiameter cylindrical key grooves arranged in a circumferential array.

6. The pipe bus duct clamp replacement tool of claim 1, wherein, The clamping plate is a U-shaped plate.

7. The pipe bus duct clamp replacement tool of claim 1, wherein, The worm wheel is rotationally connected with the fixed seat through a locating bearing; The worm gear is rotationally connected with the fixed seat through a rotating bearing; The driving block is a hexagonal prism.

8. A tubular bus duct clamp replacement method, the tubular bus duct clamp replacement tool according to claim 3, characterized by, The utility model includes the following steps: S1, the staff connects the connecting head and the ear arranged on the bottom of the clamping plate through two limiting bolts on the ground; Loosen the fixed nut, so that the clamping table is rotationally connected with the rotating shaft screw; S2, the staff connects the clamping plate and the V-shaped insulator end plate by using a platform car; The clamping hoop is fixedly connected with the tubular bus; S3, after the tubular bus is fixedly connected with the clamping hoop, the fixed nut is locked, so that the clamping seat and the clamping table are clamped; S4, mark the old clamp position of the tubular bus, and then rotate the driving block by using an electric wrench to transfer the load on the old clamp to the force relieving screw rod; S5, after the load is transferred, loosen the old clamp bolt and remove the old clamp; S6, install the new clamp at the marked position of the old clamp of the tubular bus, and then connect the new clamp with the V-shaped insulator end plate; S7, after the new clamp is installed, rotate the driving block by using an electric wrench to transfer the load on the force relieving screw rod to the new clamp, and remove the tubular bus clamp replacement tool.

9. A tubular bus duct clamp replacement method, the tubular bus duct clamp replacement tool according to claim 4, characterized by, The utility model includes the following steps: S1, the staff on the ground will be connected with the card plate bottom provided by the lifting lug through the limiting bolt rotation connection, so that the locking key does not resist the annular round key groove; loosen the fixed nut, so that the card table and the rotating shaft screw rod rotation connection; S2, the staff use platform car to connect the card plate with the V-shaped insulator end plate; the clamp and the pipe type busbar are slidingly connected, and the clamp is slid to the limit away from the card plate, and then the clamp and the pipe type busbar are fixedly connected, so that the angle between the unloading screw rod and the pipe type busbar is the minimum state; S3, after the pipe type busbar and the clamp are fixedly connected, the locking limiting bolt is locked, so that the locking key passes through the cylindrical key groove and abuts against the annular round key groove; the locking limiting bolt is locked, so that the card seat and the card table are clamped; S4, draw a line at the old clamp position of the pipe type busbar, and then transfer the load on the old clamp to the unloading screw rod by rotating the driving block through the electric wrench; S5, after the load transfer is completed, the old clamp bolt is loosened, and the old clamp is removed; S6, install the new clamp at the old clamp position of the pipe type busbar, and then connect the new clamp with the V-shaped insulator end plate; S7, after the new clamp is installed, the load on the unloading screw rod is transferred to the new clamp by rotating the driving block through the electric wrench, and the pipe type busbar clamp replacement tool is removed.

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