Insulating shaft connecting mechanism of three-station isolating switch

Abstract

The utility model discloses an insulating shaft connecting mechanism of a three-station isolating switch, which belongs to the technical field of high-voltage switches and comprises a shell, a connecting shaft, an insert and an end cover, the insert is arranged on the shell and connected with the insulating shaft, and the connecting shaft is arranged in the shell and connected with the insert through an equipotential spring; the end cover is arranged on the outer side of the shell and is used for fixing the connecting shaft; through the design of the shell, the insert and the connecting shaft, the whole device is compact in structure, small in occupied space and suitable for being installed and used in a limited space, standardization and unification of various insulation shafts deflecting at different angles are achieved at the same time, the assembly efficiency is improved, and the management cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to high -voltage switch technical field, concretely is a kind of three-position disconnecting switch insulation shaft connecting mechanism. BACKGROUND

[0002] In high-voltage power systems, three-position disconnecting switch as an important electrical equipment, its main function is to realize the safe isolation and switching of circuit. The device plays a key role in power system, especially in maintenance, repair and emergency operation, must ensure the quick switching and reliable isolation of circuit. In order to achieve this purpose, the insulation shaft connecting mechanism of three-position disconnecting switch is crucial. However, there are some significant problems in the design of traditional three-position disconnecting switch insulation shaft connecting mechanism.

[0003] Firstly, the traditional design often causes cumbersome installation process due to complex structure. The connecting mechanism of insulation shaft involves multiple components, which need to be accurately assembled in a small space. If assembled improperly, not only the performance of the equipment will be affected, but also the equipment may fail during operation. Secondly, the complex structure also increases the difficulty of maintenance. In the long-term operation of the equipment, the insulation shaft connecting mechanism is prone to wear due to friction, vibration, etc., and needs regular maintenance. However, in the traditional design, the disassembly and repair of insulation shaft connecting mechanism is time-consuming and labor-intensive, increasing maintenance cost and downtime. In addition, the design of traditional insulation shaft connecting mechanism in dustproof and waterproof aspects is often not perfect, which is easy to cause the invasion of dust and water in the external environment, affecting the service life and stability of the equipment. SUMMARY

[0004] The utility model aims at the problem that existing sampling equipment usually needs to take out sampling cylinder frequently to obtain soil sample of set depth. This operation not only greatly reduces sampling efficiency, but also increases operation complexity, causes workload to increase significantly, thereby causing the problems of time and economic cost waste, and provides a kind of automatic sampling device for hydrogeological survey.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of three-position disconnecting switch insulation shaft connecting mechanism, including shell, connecting shaft, insert and end cover, insert is arranged on the shell, the insert is connected with insulation shaft, the connecting shaft is arranged in the inside of the shell and is connected with the insert by equipotential spring;The end cover is arranged on the outside of the shell and is used to fix the connecting shaft.

[0006] Preferably, the insert is a three-step structure, which comprises a square shaft, a round shaft one and a round shaft two, the round shaft one is arranged on one side of the insert, the round shaft two is arranged on one side of the round shaft one, and the square shaft is located on one side of the round shaft two, wherein the middle part of the square shaft is provided with an internal thread, and the equal potential spring is connected with the internal thread.

[0007] Preferably, one end of the connecting shaft is an internal spline structure, and the other end of the connecting shaft is a square hole structure matched with the insert, wherein a dustproof ring mounting groove is arranged on the square hole structure, and a dustproof ring is arranged in the dustproof ring mounting groove.

[0008] Preferably, the power mechanism is arranged on the outer side of the end cover, and the power mechanism is connected with the connecting shaft through a spline shaft.

[0009] Preferably, the center line of the square hole of the connecting shaft is aligned with the center line of one spline tooth of the internal spline on the opposite side.

[0010] Preferably, the bearing is arranged in the bearing mounting groove on the shell and used for supporting the connecting shaft.

[0011] Preferably, the guide ring is arranged in the guide ring mounting groove on the shell and used for guiding the connecting shaft.

[0012] Preferably, the sealing ring is arranged between the shell and the connecting shaft.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] Through the design of the shell, the insert and the connecting shaft, the whole device is compact in structure, small in space occupation and suitable for installation and use in limited space.

[0015] The internal spline and square hole structure design between the connecting shaft and the insert ensure the stability and reliability of transmission, improve the operation precision and response speed of the disconnecting switch.

[0016] The three-step structure design of the insert can adapt to the connection requirements of different types of insulating shafts, and enhances the applicability and universality of the product.

[0017] By arranging the dustproof ring and the sealing ring, external dust and moisture can be effectively prevented from entering the mechanism, the service life of the device is prolonged, and the normal operation of the device in harsh environment is ensured.

[0018] By arranging the bearing and the guide ring on the shell, the movement of the connecting shaft can be effectively supported and guided, the friction and wear are reduced, and the disconnecting switch is more stable and reliable during operation.

[0019] Through the setting of the power mechanism and the spline shaft, flexible driving of the disconnecting switch is realized, and the operability and the automation degree of the device are enhanced.

[0020] In summary, the three-position disconnecting switch insulation shaft connecting mechanism solves many problems in traditional design through structure optimization and function improvement, not only improves the performance and service life of the equipment, but also provides more reliable protection for the safe operation of the power system. The improvement of this design will significantly reduce the maintenance cost and operation risk, bring higher economic benefits to the users, and the three-position disconnecting switch insulation shaft connecting mechanism realizes the standardization of the deflection insulation shaft at different angles through the spline shaft cooperation mode, improves the assembly efficiency, and reduces the management cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 is a schematic diagram of the overall structure of the utility model.

[0022] Legend: 1, insulation shaft; 2, insert; 3, shell; 4, dustproof ring; 5, connecting shaft; 6, screw; 7, end cover; 8, spline shaft; 9, power mechanism; 10, bearing; 11, equipotential spring; 12, sealing ring; 13, guide ring. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in 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.

[0024] Referring to Fig. 1, the utility model discloses a three-position disconnecting switch insulation shaft connecting mechanism, which comprises a shell 3, a connecting shaft 5, an insert 2 and an end cover 7, the insert 2 is connected with the insulation shaft 1, the connecting shaft 5 is arranged in the interior of the shell 3 and is connected with the insert 2 through the equipotential spring 11, and the end cover 7 is arranged outside the shell 3 and is used for fixing the connecting shaft 5.

[0025] The end cover 7 is fixed on the shell 3 through the screw 6, and the end cover 7 can be used for preventing the outer extension of the connecting shaft 5 after inflation in the switch.

[0026] The insert 2 is a three-step structure, which comprises a square shaft, a first circular shaft and a second circular shaft, the first circular shaft is arranged on one side of the insert 2, the second circular shaft is arranged on one side of the first circular shaft, and the square shaft is located on one side of the second circular shaft, wherein the middle part of the square shaft is provided with an internal thread, and the equal potential spring 11 is connected with the internal thread; in the embodiment, the equal potential spring 11 is used for equal potential connection of the insert 2 and the connecting shaft 5.

[0027] The inner end of the connecting shaft 5 is an internal spline structure, the other end of the connecting shaft 5 is a square hole structure matched with the insert 2, wherein the square hole structure is provided with a dust ring mounting groove, and the dust ring 4 is arranged in the dust ring mounting groove; the dust ring 4 is arranged between the insert 2 and the connecting shaft 5; the dust ring 4 is used for preventing metal powder possibly worn and fallen during movement of the insert 2 and the connecting shaft 5 from entering an internal air chamber of the switch.

[0028] The utility model also includes a power mechanism 9, the power mechanism 9 is arranged on the outside of the end cover 7, and the power mechanism 9 is connected with the connecting shaft 5 through the spline shaft 8.

[0029] In order to ensure assembly consistency, the center line of the square hole of the connecting shaft 5 is aligned with the center line of one spline tooth of the internal spline on the opposite side, and the spline tooth groove of the spline shaft 8 is aligned with the center line of the internal square hole.

[0030] The utility model also includes a bearing 10, the bearing 10 is arranged in a bearing mounting groove on the shell 3 and is used for supporting the connecting shaft 5; the shell 3 is provided with a guide ring mounting groove, and a guide ring 13 is arranged in the guide ring mounting groove and is used for guiding the connecting shaft 5; the bearing 10 and the guide ring 13 can avoid wear of the connecting shaft 5 and the shell 3 caused by three-phase assembly coaxiality error.

[0031] The utility model also includes a sealing ring 12, the sealing ring 12 is arranged between the shell 3 and the connecting shaft 5, and the sealing ring 12 is used for rotary dynamic sealing.

[0032] The utility model is suitable for the insulation shaft connecting structure of three-position disconnecting switch under multiple working conditions, realizes standardization and unification of multiple different angle deflection insulation shafts through spline shaft cooperation mode, improves assembly efficiency and reduces management cost.

[0033] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-position disconnector insulation shaft connection mechanism, characterized in that, The utility model relates to a kind of electric power distribution box, including shell (3), connecting shaft (5), insert (2) and end cover (7), the insert (2) is connected with insulated shaft (1), the connecting shaft (5) is arranged in the inside of the shell (3) and is connected with the insert (2) by equipotential spring (11);The end cover (7) is arranged on the outside of the shell (3) and is used to fix the connecting shaft (5);The inside one end of the connecting shaft (5) is internal spline structure, the other end of the connecting shaft (5) is square hole structure matched with the insert (2), wherein dustproof ring installation groove is provided on square hole structure, dustproof ring (4) is arranged in dustproof ring installation groove;It further includes power mechanism (9), the power mechanism (9) is arranged on the outside of the end cover (7), and the power mechanism (9) is connected with the connecting shaft (5) by spline shaft (8);It further includes bearing (10), the bearing (10) is installed in bearing installation groove on the shell (3) and is used to support connecting shaft (5);It further includes guide ring (13), the shell (3) is provided with guide ring installation groove, and the guide ring is installed in guide ring installation groove and is used for the guidance of connecting shaft (5);It further includes sealing ring (12), and the sealing ring (12) is installed between the shell (3) and connecting shaft (5).

2. The triple position disconnecting circuit switch insulated shaft connecting mechanism of claim 1, wherein, The insert (2) is three-step structure, including square shaft, round shaft one and round shaft two, the round shaft one is arranged at one side of the insert (2), the round shaft two is arranged at one side of the round shaft one, the square shaft is located at one side of the round shaft two, the middle part of the square shaft is provided with internal thread, and the equipotential spring (11) is connected with internal thread.

3. The triple position disconnecting circuit switch insulated shaft connecting mechanism of claim 1, wherein, The square hole center line of the connecting shaft (5) is aligned with the center line of one spline tooth of the opposite internal spline.

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