CN215989945U

CN215989945U - Auxiliary tool for replacing high-pressure fusion tube

Info

Publication number: CN215989945U
Application number: CN202122357466.5U
Authority: CN
Inventors: 郑林刚; 吴义庆; 何杨锋; 吕文峰; 程诗恩; 汪树林; 李春霞; 余磊; 詹菊丽
Original assignee: Taihu Power Supply Co of State Grid Anhui Electric Power Co Ltd
Current assignee: Taihu Power Supply Co of State Grid Anhui Electric Power Co Ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-03-08
Anticipated expiration: 2031-09-27

Abstract

The utility model discloses an auxiliary tool for replacing a high-pressure fusion tube, which comprises a clamping piece, a screw rod and a bidirectional intermittent motion mechanism, wherein the clamping piece, the screw rod and the bidirectional intermittent motion mechanism are oppositely arranged; the two clamping pieces are provided with screw holes matched with the screw rod, and the two clamping pieces are respectively in threaded fit with two ends of the screw rod; the thread turning directions of the two ends of the screw rod are opposite; the bidirectional intermittent motion mechanism is positioned between the two clamping pieces and drives the screw rod to rotate forward and backward. According to the utility model, the fixing clamp and the bidirectional intermittent motion assembly form a tool for assembling, disassembling and replacing the high-pressure hot melting pipe in a tightening or loosening manner, when the high-pressure hot melting pipe is assembled, the bidirectional intermittent motion assembly enables the screw rod and the clamp to rotate relatively, and the spring pieces at two ends of the high-pressure hot melting pipe are pressed tightly, so that the high-pressure hot melting pipe is convenient for an installer to operate at high altitude. The use is convenient, the labor force of personnel is saved, and the superiority is strong; the replacement process is simple, the use is convenient, and the adaptability is strong.

Description

Auxiliary tool for replacing high-pressure fusion tube

Technical Field

The utility model relates to the technical field of electrical equipment maintenance, in particular to an auxiliary tool for replacing a high-voltage fusion tube.

Background

In a 35kV transformer substation, a voltage transformer and a station transformer are usually connected in series with a group of high-voltage fusion tubes in a loop to serve as short-circuit or overcurrent protection devices, but under the influence of factors such as lightning weather, untight sealing of two ends of the fusion tubes and damp, short circuit of the loop and the like, the internal melt of the high-voltage fusion tubes is easily fused, and the internal melt needs to be replaced immediately to recover power transmission so as to ensure the operation reliability of a power grid. High-pressure fusion tube primary structure is outside insulating porcelain sleeve, top cap and inside fuse-element, it is good to contact with conductive part for the fuse-element, a pressure spring need respectively be placed at the intraductal both ends of porcelain sleeve, consequently, need two people's cooperation at the in-process of changing, alone press down porcelain sleeve top cap hard and overcome the resistance, alone use the plum blossom bottle opener to screw four nuts of top cap and fix, waste time and energy in the installation, and the in-process of eminence operation does not have the strong point, be difficult to overcome the resistance of spring, certain danger has.

In order to solve the problem, the patent No. 201620649731.3 discloses an outdoor fuse replacement tool, and the primary structure of this instrument is interval adjusting device and porcelain ring sleeve pipe, and the porcelain ring sleeve pipe contains loop bar and board knot, and interval adjusting device contains hydraulic assembly and flexible subassembly. The use method is that the ceramic ring sleeve supports the top cover of the fuse, the screw rod on the top cover is sleeved by the retaining ring to expose the ceramic ring sleeve, the hydraulic assembly is started to drive the telescopic assembly to do linear reciprocating motion in the horizontal direction, and one end of the telescopic assembly is connected with the sleeve rod, so that the sleeve rod can be driven to do reciprocating motion at the same time, the end face of the top cover is extruded by the retaining plate, the elasticity of a spring inside the fuse on the side cover is reduced, the screw rod on the top cover is convenient to disassemble and assemble, and the purpose of conveniently replacing the fusion tube is achieved. The utility model has the problems that the operating rod of the operating mechanism is in the horizontal direction, the operation is inconvenient in the high-altitude operation, and the designed connecting rods are too many and are easy to fail and jam; the pinch plate is unreasonable in design and comprises four types of pinch plates, wherein two types of pinch plates are sealed, one type of pinch plate can be operated and the other type of pinch plate can not be sealed, the application range of the sealed pinch plate is small, and the top cover is connected with a lead when the pinch plate is replaced at a high place and can not pass through the sealed pinch plate; the operable and closed buckle plate is closed after a screw penetrates through the U-shaped notch, more time is consumed in the fixing process, and the bearing capacity of the screw does not necessarily meet the requirement; the fusion tube cannot be fixed by the buckle plate which cannot be closed in the high-altitude operation, and great potential safety hazard is realized.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that how to replace a tool for replacing a high-pressure fusion tube in the prior art has potential safety hazards.

The utility model solves the technical problems through the following technical means:

a high-pressure fusion tube replacement auxiliary tool comprises a clamp (1), a screw rod (2) and a bidirectional intermittent motion mechanism which are oppositely arranged; screw holes matched with the screw rod (2) are formed in the two clamping pieces (1), and the two clamping pieces (1) are respectively in threaded fit with two ends of the screw rod (2); the thread turning directions of the two ends of the screw rod (2) are opposite; the bidirectional intermittent motion mechanism is positioned between the two clamping pieces (1) to drive the screw rod (2) to rotate in the forward and reverse directions.

Utility model discloses a fixed folder constitutes with two-way intermittent motion subassembly and tightens up or loosely put and form high-pressure hot melt pipe installation, demolish and change instrument, when the installation, makes lead screw and folder take place relative rotation with two-way intermittent motion subassembly, compresses tightly high-pressure hot melt pipe both ends spring leaf, and the installer of being convenient for is in the operation of high altitude. The use is convenient, the labor force of personnel is saved, and the superiority is strong; the replacement process is simple, the use is convenient, and the adaptability is strong.

Further, the bidirectional intermittent motion mechanism comprises a ratchet wheel (31), a pawl (32), a shell (33), a handle (34) and a cam (35); the ratchet wheel (31) is positioned in the shell (33), a through hole coaxial with the ratchet wheel (31) is formed in the shell (33), and the screw rod (2) penetrates through the shell (33) and the ratchet wheel (31), is in running fit with the shell (33), and is fixedly matched with the ratchet wheel (31); the two pawls (32) are positioned in the shell (33), one ends of the two pawls (32) are rotationally fixed with the shell (33), and the other ends of the two pawls face opposite directions and are matched with the ratchet wheel (31); the cam (35) is rotationally fixed in the shell (33) and is positioned between the two pawls (32); one end of the handle (34) is fixed with the cam (35), and the other end of the handle extends out of the shell (33).

Furthermore, the screw rod (2) is provided with an inserting key (21) along the axis direction, and the through hole of the ratchet wheel (31) is provided with a slot (311) matched with the inserting key (21); the screw rod (2) and the ratchet wheel (31) are matched and fixed with the slot (311) through the inserting key (21).

Furthermore, a limiting groove (11) is formed in the clamping piece (1); the limiting groove (11) is communicated from one side to the other side of the clamping piece (1), and the bottom of the limiting groove (11) is open.

Furthermore, the two pawls (32) are arranged in a splayed shape.

Furthermore, a spring (36) is fixed between the splayed outer side of the pawl (32) and the shell (33), and the spring (36) is pressed under a normal state.

Further, the cam (35) is positioned between the two pawls (32), and the cam (35) is positioned inside the splayed shape of the two pawls (32).

Further, the device also comprises a spanner (4); the wrench (4) is fixed with the shell (33).

Furthermore, a wrench hole (331) is formed in the housing (33), and the wrench (4) is detachably inserted into and matched with the wrench hole (331).

Furthermore, a pin hole is formed in the clamping piece (1), and a spring bolt (12) is installed in the pin hole; and the pin shaft of the spring bolt (12) faces the limiting groove (11).

The utility model has the advantages that:

according to the utility model, the fixing clamp and the bidirectional intermittent motion assembly form a tool for assembling, disassembling and replacing the high-pressure hot melting pipe in a tightening or loosening manner, when the high-pressure hot melting pipe is assembled, the bidirectional intermittent motion assembly enables the screw rod and the clamp to rotate relatively, and the spring pieces at two ends of the high-pressure hot melting pipe are pressed tightly, so that the high-pressure hot melting pipe is convenient for an installer to operate at high altitude. The use is convenient, the labor force of personnel is saved, and the superiority is strong; the replacement process is simple, the use is convenient, and the adaptability is strong.

Particularly, the ratchet wheel assembly with double pawls can be used for adjusting gears with the handle, so that the forward and reverse rotation of the screw rod is realized, and the distance adjustment of the clamping piece is completed. In addition, through the design of spanner, can easily rotate the shell, labour saving and time saving is convenient for the high worker operation.

Drawings

FIG. 1 is a schematic structural diagram of an application of an auxiliary tool for replacing a high-pressure fusion tube in an embodiment of the utility model;

FIG. 2 is a schematic overall structure diagram of an auxiliary tool for replacing a high-pressure fusion tube in an embodiment of the utility model;

fig. 3 is a schematic diagram of the internal structure of the bidirectional intermittent motion mechanism in the embodiment of the utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model discloses an auxiliary tool for replacing a high-pressure fusion tube, which is used for clamping and fixing two ends of a high-pressure fusion tube 10 as shown in figure 1. Comprises a clamping piece 1, a screw rod 2 and a bidirectional intermittent motion mechanism which are oppositely arranged.

As shown in fig. 2, the clamping members 1 in this embodiment are plate-shaped, and the two clamping members 1 are symmetrically installed at two ends of the screw rod 2. The clamp 1 is provided with a screw hole in threaded fit with the screw rod 2. Screw holes matched with the screw rods 2 are formed in the two clamping pieces 1. The clamp 1 is provided with a limiting groove 11 below the screw hole, the limiting groove 11 is communicated from one side to the other side of the clamp 1 and is in an inverted U shape, and spring pieces (sheet structures) at two ends of the high-pressure fusion tube 10 are limited in the limiting groove 11 of the clamp 1. The inverted U-shaped design can be conveniently assembled with the connecting sheets at the two ends of the high-pressure fusion tube 10.

In this embodiment, in order to make the high-pressure fusion tube 10 fixed more stable, still be provided with spring bolt 12, concrete structure is: pin holes are arranged on the plate bodies on two sides of the U-shaped limiting groove 11 of the clamping piece 1, and spring bolts 12 are arranged in the pin holes; the pin shaft of the spring bolt 12 faces the limiting groove 11. In this embodiment, the spring bolt 12 is a conventional structure, and will not be described in detail.

The screw rod 2 is a rod piece with external threads at two ends and a smooth surface in the middle. The screw threads at the two ends of the screw rod 2 are opposite in rotating direction, so that the clamping pieces 1 at the two ends of the screw rod 2 can be ensured to move oppositely or oppositely when the screw rod 2 is rotated, and the distance between the two clamping pieces 1 can be adjusted.

As shown in fig. 3, the bidirectional intermittent mechanism in this embodiment includes a ratchet 31, a pawl 32, a housing 33, a handle 34, and a cam 35.

The housing 33 is formed by clamping or screwing two half-shells (not shown) and has a cavity therein for accommodating the ratchet 31, the pawl 32 and the cam 35. The shell 33 is provided with a through hole from one side to the other side, the screw rod 2 penetrates through the hole of the shell 33 and is rotationally fixed with one half shell through a bearing, and the hole diameter of the other half shell can be slightly larger than the diameter of the screw rod 2 so as to avoid interference when the screw rod 2 rotates. The ratchet wheel 31 is positioned in the cavity of the shell 33 and is sleeved on the screw rod 2 to be fixed with the screw rod 2, the screw rod 2 is provided with an inserting key 21, the hole wall of the ratchet wheel 31 is provided with an inserting groove 311 matched with the inserting key 21, and the ratchet wheel 31 and the inserting groove 311 are inserted and fixed through the inserting key 21 and the inserting groove 311 to form a whole body and can synchronously rotate. The two pawls 32 are fixed in the inner cavity of the housing 33 in a splayed shape and abut against both sides of the ratchet 31. A cam 35 is located within the housing 33 and is rotatably secured to the housing 33 intermediate the pawls 32. One pawl 32 is jacked up through the wave cam 35, the other pawl 32 is matched with the ratchet wheel 31, the rotation of the screw rod 2 in one direction is realized, and the rotation of the screw rod 2 in the other direction is realized. In order to facilitate the wave cam 35, a handle 34 is further provided in the embodiment, the handle 34 penetrates through the housing 33 and is fixed with the cam 35, and the handle 34 is operated to control the cam 35 to rotate, so that one of the pawls 32 is matched with the ratchet wheel 31, the forward and reverse rotation of the screw rod 2 is realized, and the clamp 1 is driven to move.

In this embodiment, in order to maintain the stability of the posture of the pawl 32, a spring 36 is further provided, and the specific structure is that a spring 36 is respectively installed on the splayed outer sides of the two pawls 32, one end of the spring 36 is fixed with the splayed outer side of the pawl 32, the other end of the spring is fixed with the inner wall of the shell 33, no matter the clamping jaw is jacked up by the cam 35 or matched with the ratchet wheel 31, the spring 36 is in a pressed state, the tight abutting of the pawl 32 and the cam 35 or the ratchet wheel 31 is ensured, and the good abutting is the key for ensuring the normal operation of the tool.

In the embodiment, the wrench 4 rotates the housing 33, so as to drive the screw rod 2 to rotate. Because the size of the equipment is limited greatly during high-altitude operation, the wrench 4 and the housing 33 in this embodiment are fixed in a detachable and fixed manner, for example, the housing 33 is provided with a wrench hole 331 matching with the end of the wrench 4, and the housing 33 can be rotated by inserting the wrench 4 into the wrench hole 331. In this embodiment, the wrench opening 331 is generally formed at the top of the housing 33 for easy manipulation.

The working principle is as follows: firstly, the distance between the two clamping pieces 1 is adjusted to be larger through manual adjustment, the length of the high-pressure fusion tube 10 is met, and the spring pieces at the two ends of the high-pressure fusion tube 10 are limited in the limiting grooves 11 of the clamping pieces 1. Next, the distance between the clips 1 is adjusted, and the specific method is as follows:

the cam 35 is adjusted to a forward rotation gear position through the handle 34, so that the forward pawl 32 is matched with the ratchet wheel 31; then the shell 33 is rotated by the wrench 4, the shell 33 and the screw rod 2 rotate relatively to drive the forward pawl 32 to slide on the ratchet wheel 31, then the shell 33 is rotated reversely by the wrench 4, at the moment, the forward pawl 32 drives the ratchet wheel 31 to rotate, the ratchet wheel 31 drives the screw rod 2 to rotate, the two clamping pieces 1 rotate with the screw rod 2 under the limit of the spring pieces at the two ends of the high-pressure fusion tube 10, the distance between the two clamping pieces 1 is gradually reduced until the clamping of the high-pressure fusion tube 10 is met, and finally the bolt 12 locks the spring pieces at the two ends of the high-pressure fusion tube 10 by the adjusting spring 36. After the operation is finished, the cam 35 is adjusted to a reverse gear position through the handle 34, then the shell 33 is reversely rotated through the wrench 4, the shell 33 is forwardly rotated, so that the reverse pawl 32 drives the ratchet wheel 31 to reversely rotate, the ratchet wheel 31 drives the screw rod 2 to reversely rotate, the distance between the two clamping pieces 1 is gradually enlarged, and finally the high-pressure fusion tube 10 is released.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The auxiliary tool for replacing the high-pressure fusion tube is characterized by comprising a clamping piece (1), a screw rod (2) and a bidirectional intermittent motion mechanism which are oppositely arranged; screw holes matched with the screw rod (2) are formed in the two clamping pieces (1), and the two clamping pieces (1) are respectively in threaded fit with two ends of the screw rod (2); the thread turning directions of the two ends of the screw rod (2) are opposite; the bidirectional intermittent motion mechanism is positioned between the two clamping pieces (1) to drive the screw rod (2) to rotate in the forward and reverse directions.

2. A high-pressure fusion tube replacement assisting tool according to claim 1, characterized in that the bidirectional intermittent movement mechanism comprises a ratchet wheel (31), a pawl (32), a housing (33), a handle (34), a cam (35); the ratchet wheel (31) is positioned in the shell (33), a through hole coaxial with the ratchet wheel (31) is formed in the shell (33), and the screw rod (2) penetrates through the shell (33) and the ratchet wheel (31), is in running fit with the shell (33), and is fixedly matched with the ratchet wheel (31); the two pawls (32) are positioned in the shell (33), one ends of the two pawls (32) are rotationally fixed with the shell (33), and the other ends of the two pawls face opposite directions and are matched with the ratchet wheel (31); the cam (35) is rotationally fixed in the shell (33) and is positioned between the two pawls (32); one end of the handle (34) is fixed with the cam (35), and the other end of the handle extends out of the shell (33).

3. The high-pressure fusion tube replacement auxiliary tool is characterized in that the screw rod (2) is provided with an inserting key (21) along the axial direction, and a slot (311) matched with the inserting key (21) is formed in a through hole of the ratchet wheel (31); the screw rod (2) and the ratchet wheel (31) are matched and fixed with the slot (311) through the inserting key (21).

4. The high-pressure fusion tube replacement auxiliary tool according to any one of claims 1 to 3, wherein a limiting groove (11) is formed in the clamping piece (1); the limiting groove (11) is communicated from one side to the other side of the clamping piece (1), and the bottom of the limiting groove (11) is open.

5. A high-pressure fusion tube replacement aid according to claim 2, characterised in that the two pawls (32) are arranged in a splayed configuration.

6. A high-pressure fuse tube replacement auxiliary tool according to claim 5, characterized in that a spring (36) is also fixed between the splayed outer side of the pawl (32) and the housing (33), the spring (36) being normally compressed.

7. The high-pressure fusion tube replacement assisting tool as claimed in claim 5, wherein the cam (35) is located between the two pawls (32), and the cam (35) is located inside a splay of the two pawls (32).

8. A high-pressure fusion tube replacement auxiliary tool according to any one of claims 1 to 3, further comprising a wrench (4); the wrench (4) is fixed with the shell (33).

9. The high-pressure fusion tube replacement auxiliary tool as claimed in claim 8, wherein a wrench hole (331) is formed in the housing (33), and the wrench (4) is detachably inserted into and matched with the wrench hole (331).

10. The high-pressure fusion tube replacement auxiliary tool is characterized in that a pin hole is formed in the clamping piece (1), and a spring bolt (12) is installed in the pin hole; and the pin shaft of the spring bolt (12) faces the limiting groove (11).