Insulating pull rod for high-voltage vacuum circuit breaker

Abstract

The utility model provides an insulating pull rod for a high-voltage vacuum circuit breaker, and relates to the technical field of insulating pull rods. The insulating shell is of a cylindrical structure, a spring barrel is connected into the insulating shell in a threaded mode, and the spring barrel is of a cylindrical structure. Through the arrangement of the clamping grooves and the auxiliary rods, on one hand, when the spring barrel is installed, the spring barrel is placed into the insulating shell and is rotated by hands, and when the spring barrel cannot be rotated by hands, the two auxiliary rods are clamped into the two clamping grooves and are rotated, and at the moment, the spring barrel can be tightened; on the other hand, when the blocking base is installed, the two auxiliary rods can be held to rotate, compared with an existing device, the spring barrel and the blocking base of the device are more convenient to install, and the problems that when an existing insulation pull rod is assembled, especially when the spring barrel is in threaded connection with an insulation shell, screwing cannot be achieved manually, screwing can only be achieved with the help of a tool, and limitation is large are solved; and when the baffle seat is mounted, the baffle seat can be tightened by means of a tool, so that the practicability is low.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of insulating pull rod, more specifically, it is especially related to insulating pull rod for high voltage vacuum circuit breaker. BACKGROUND

[0002] At present, high voltage vacuum circuit breaker is widely used in power transmission and distribution system, and the insulating pull rod is a very important part of the high voltage vacuum circuit breaker, which is used to operate the connecting movement part of the vacuum arc-extinguishing chamber connecting contact, plays the role of high voltage insulation and connecting the main shaft movement of the vacuum circuit breaker, and has a very high voltage and a very large impact force and an operating life of ten thousand times.

[0003] The existing insulating pull rod cannot be tightened manually when assembling, especially when the spring barrel is screwed with the insulating shell, and tools are needed to tighten it, which has great limitations. When installing the stop seat, tools are also needed to tighten it, which has low practicability. UTILITY MODEL CONTENTS

[0004] In order to solve the above technical problems, the utility model provides an insulating pull rod for high voltage vacuum circuit breaker, which solves the problem that the existing insulating pull rod cannot be tightened manually when assembling, especially when the spring barrel is screwed with the insulating shell, and tools are needed to tighten it, which has great limitations. When installing the stop seat, tools are also needed to tighten it, which has low practicability.

[0005] The purpose and effect of the insulating pull rod for high voltage vacuum circuit breaker are achieved by the following specific technical means:

[0006] The insulating pull rod for high voltage vacuum circuit breaker comprises an insulating shell, which is a cylindrical barrel structure, and a spring barrel is screwed in the insulating shell, and the spring barrel is a cylindrical barrel structure.

[0007] Further, a stop block of annular structure is slidably connected in the spring barrel, and a first pull rod is welded in the stop block.

[0008] Further, a spiral spring is placed in the spring barrel, the bottom of the spiral spring is in contact with the bottom end surface of the inner wall of the spring barrel, and the top of the spiral spring is in contact with the bottom end surface of the stop block.

[0009] Further, a stop seat of annular structure is screwed in the spring barrel, and the bottom end surface of the stop seat is in contact with the top end surface of the stop block. When the stop seat is tightened, the bottom end surface of the stop seat is in elastic contact with the top end surface of the stop block.

[0010] Further, a connecting seat is formed on the bottom end surface of the insulating shell, and a second pull rod is screwed on the connecting seat.

[0011] Further, a first exhaust hole is formed on the insulating shell, and a second exhaust hole is formed on the connecting seat, and the second exhaust hole and the first exhaust hole are both circular hole structures.

[0012] Further, two clamping grooves are symmetrically formed on the top end surface of the spring barrel, and the two clamping grooves are both rectangular groove structures.

[0013] Further, two auxiliary rods are symmetrically welded on the top end surface of the blocking seat, and the two auxiliary rods are both L-shaped bent rod structures, and the two auxiliary rods together form an adjusting piece of the blocking seat.

[0014] Further, the auxiliary rod can be inserted into the clamping groove, and the auxiliary rod and the clamping groove together form an adjusting piece of the spring barrel.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] According to the application, on the one hand, when the spring barrel is installed, the spring barrel is placed into the insulating shell, and is rotated by hand, when the spring barrel cannot be rotated by hand, the two auxiliary rods are clamped into the two clamping grooves and are rotated, and at this time, the spring barrel can be tightened.

[0017] On the other hand, when the blocking seat is installed, the two auxiliary rods are held and are rotated, and compared with the prior device, the spring barrel and the blocking seat of the device are more convenient to install.

[0018] According to the application, on the one hand, when the spring barrel is screwed into the insulating shell, the gas in the insulating shell can be discharged through the first exhaust hole.

[0019] On the other hand, when the second pull rod is screwed into the connecting seat, the gas in the connecting seat can be discharged through the second exhaust hole, and compared with the prior device, the device has higher stability after the spring barrel and the second pull rod are installed. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the axial view structural schematic diagram of the insulating pull rod for the high-voltage vacuum circuit breaker.

[0021] Figure 2 is the main view structural schematic diagram of the insulating pull rod for the high-voltage vacuum circuit breaker.

[0022] Figure 3 is the axial view structural schematic diagram of the insulating pull rod for the high-voltage vacuum circuit breaker.

[0023] Figure 4 is the axial view structural schematic diagram of the spring barrel and the blocking seat.

[0024] Figure 5is the axial view split structure schematic diagram of the utility model Figure 4 .

[0025] Figure 6 is the axial view structure schematic diagram of the utility model after the connecting seat is split.

[0026] In the drawing, the corresponding relationship of component name and drawing number is:

[0027] 1, insulating shell; 101, first exhaust hole; 2, spring barrel; 201, clamping groove; 3, stop block; 4, first pull rod; 5, helical spring; 6, stop seat; 601, auxiliary rod; 7, connecting seat; 701, second exhaust hole; 8, second pull rod. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be described clearly and completely below by combining the drawings of the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all. Based on the described embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0029] Unless otherwise defined, the technical terms or scientific terms used in this document should be understood as the usual meaning understood by those skilled in the art to which the utility model belongs. The "one", "a" or "the" and similar words used in the utility model patent application description and claims do not mean quantity limitation, but mean that there is at least one. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents. "Connection" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] The embodiments of the utility model will be further described in detail below by combining the drawings and examples.

[0031] Example one:

[0032] As shown in the accompanying Figure 1 to the accompanying Figure 6 :

[0033] The utility model provides an insulating pull rod for high voltage vacuum circuit breaker, including insulating shell 1, insulating shell 1 is cylindrical tubular structure, one spring cylinder 2 is connected in the insulating shell 1 with the internal thread, and the spring cylinder 2 is cylindrical tubular structure.

[0034] Wherein, the spring cylinder 2 is slidably connected with a baffle 3 of annular structure, and the baffle 3 is welded with a first pull rod 4 inside.

[0035] Wherein, a spiral spring 5 is placed in the spring cylinder 2, the bottom of the spiral spring 5 is in contact with the bottom end surface of the inner wall of the spring cylinder 2, and the top of the spiral spring 5 is in contact with the bottom end surface of the baffle 3.

[0036] Wherein, the spring cylinder 2 is threadedly connected with a baffle seat 6 of annular structure, and the bottom end surface of the baffle seat 6 is in contact with the top end surface of the baffle 3, and the bottom end surface of the baffle seat 6 is in elastic contact with the top end surface of the baffle 3 when the baffle seat 6 is tightened.

[0037] Wherein, the bottom end surface of the insulating shell 1 is integrally formed with a connecting seat 7, and the connecting seat 7 is threadedly connected with a second pull rod 8.

[0038] Wherein, a first exhaust hole 101 is formed in the insulating shell 1, and a second exhaust hole 701 is formed in the connecting seat 7, and the second exhaust hole 701 and the first exhaust hole 101 are both circular hole structures, and when the spring cylinder 2 is threadedly connected in the insulating shell 1, the gas in the insulating shell 1 can be discharged through the first exhaust hole 101, and when the second pull rod 8 is threadedly connected in the connecting seat 7, the gas in the connecting seat 7 can be discharged through the second exhaust hole 701.

[0039] Wherein, two clamping grooves 201 are symmetrically formed in the top end surface of the spring cylinder 2, and the two clamping grooves 201 are both rectangular slot structures.

[0040] Wherein, two auxiliary rods 601 are symmetrically welded on the top end surface of the baffle seat 6, and the two auxiliary rods 601 are both L-shaped bent rod structures, and the two auxiliary rods 601 together form an adjusting member of the baffle seat 6.

[0041] Example two:

[0042] On the basis of example one, the auxiliary rod 601 can be inserted into the clamping groove 201, and the auxiliary rod 601 and the clamping groove 201 together form an adjusting member of the spring cylinder 2, when installing the spring cylinder 2, the spring cylinder 2 is placed inside the insulating shell 1, and is rotated by hand, when the spring cylinder 2 cannot be rotated by hand, the two auxiliary rods 601 are clamped into the two clamping grooves 201 and are rotated, at this time, the spring cylinder 2 can be tightened, and when the baffle seat 6 is rotated, the two auxiliary rods 601 can be held and rotated.

[0043] Working principle: when assembling, the spring cylinder 2 is coated with adhesive and then put into the insulating shell 1, and rotated by hand, when it cannot be rotated by hand, the two auxiliary rods 601 are clamped into the two clamping grooves 201 and rotated, at this time the spring cylinder 2 can be tightened, at this time the gas is discharged through the first exhaust hole 101; the coil spring 5 is put into the spring cylinder 2, the stop block 3 is put into the spring cylinder 2, the stop seat 6 is threadedly connected inside the spring cylinder 2, when rotating the stop seat 6, the two auxiliary rods 601 can be held and rotated, the second pull rod 8 is coated with adhesive and threadedly connected on the connecting seat 7, at this time the gas can be discharged through the second exhaust hole 701.

[0044] While the application has been described with reference to the above embodiments, it will be understood by those skilled in the art that various changes can be made and equivalents can be substituted for elements thereof without departing from the scope of the application as defined in the appended claims. Although the specification contains many specific implementation details, these should not be construed as limiting the scope of the application but merely as illustrating the features of specific embodiments. The scope of the application is defined by the appended claims and equivalents thereof, rather than by the description of the embodiments preceding it.

Claims

1. An insulating tie rod for a high-voltage vacuum circuit breaker, characterized by: The utility model provides an insulating shell (1), the insulating shell (1) is cylindrical structure, and the insulating shell (1) is screwed with a spring cylinder (2) in, and the spring cylinder (2) is cylindrical structure, and the spring cylinder (2) is slidably connected with a ring structure's stopper (3) in, and the stopper (3) is welded with a first pull rod (4) in, and the spring cylinder (2) is placed with a spiral spring (5) in, and the spiral spring (5) bottom is in contact with the inner wall bottom end surface of spring cylinder (2), and the top of spiral spring (5) is in contact with the bottom end surface of stopper (3), and the spring cylinder (2) is screwed with a ring structure's stop seat (6) in, and the stop seat (6) bottom end surface is in contact with the top end surface of stopper (3), and when stop seat (6) is screwed, stop seat (6) bottom end surface and stopper (3) top end surface elastic contact.

2. The insulating pull rod for a high-voltage vacuum circuit breaker according to claim 1, characterized in that: The insulating shell (1) bottom end surface once forms a connecting seat (7), and the connecting seat (7) is screwed with a second pull rod (8).

3. The insulating pull rod for a high-voltage vacuum circuit breaker according to claim 2, characterized in that: The insulating shell (1) is provided with a first exhaust hole (101), and the connecting seat (7) is provided with a second exhaust hole (701), and the second exhaust hole (701) and the first exhaust hole (101) are both circular hole structures.

4. The insulating pull rod for a high-voltage vacuum circuit breaker according to claim 3, wherein: The spring cylinder (2) top end surface is provided with two clamping grooves (201), and the two clamping grooves (201) are both rectangular groove structures.

5. The insulating pull rod for a high-voltage vacuum circuit breaker according to claim 4, characterized in that: The stop seat (6) top end surface is symmetrically welded with two auxiliary rods (601), and the two auxiliary rods (601) are both L-shaped bent rod structures, and the two auxiliary rods (601) together constitute the adjusting member of the stop seat (6).

6. The insulating pull rod for a high-voltage vacuum circuit breaker according to claim 5, characterized in that: The auxiliary rod (601) can be inserted into the clamping groove (201), and the auxiliary rod (601) and the clamping groove (201) together constitute the adjusting member of the spring cylinder (2).

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