Insulation pull rod convenient to install

Abstract

An insulating pull rod convenient to install belongs to the field of insulating pull rods and structurally comprises an insulator, a first insert and a second insert. The first insert is arranged at the lower end of the insulator; the second insert is arranged at the upper end of an insulator, the metal insert, connected with the electrified part of the main loop of the circuit breaker, on the insulating pull rod has an adjusting function, the caliber of threaded connection can be directly adjusted, the convenience of installation work is effectively improved, and during adjustment, the driving wheel is rotated through a tool or manually, so that the driving wheel drives the bidirectional threaded rod to rotate; the two-way threaded rod drives the two adjusting pieces in threaded connection to move in opposite directions, the two adjusting pieces move towards the driving wheel to reduce the diameter of the threaded connection, and the two adjusting pieces move in the direction away from the driving wheel to increase the diameter of the threaded connection.

Description

Technical Field

[0001] This utility model is an easy-to-install insulating tie rod, belonging to the field of insulating tie rods. Background Technology

[0002] When the switchgear is in a energized operating state, the energized parts of the main circuit of the circuit breaker need to be isolated from the mechanical operating parts with insulation to prevent them from becoming energized. This requires an object with excellent strength and insulation performance, namely an insulating tie rod.

[0003] The existing insulating tie rod has a metal insert that connects to the live parts of the main circuit of the circuit breaker. This metal insert has a non-adjustable internal thread structure. During installation, the operator needs to select a metal insert with a matching thread diameter for connection, which is inconvenient. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an easily installable insulating tie rod, thereby solving the problem that the metal inserts on existing insulating tie rods that connect to the live parts of the main circuit of the circuit breaker have a non-adjustable internal thread structure. During installation, workers need to select a metal insert with a matching thread diameter for connection, which is quite inconvenient.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an insulating pull rod that is easy to install, the structure of which includes an insulating material, a first insert, and a second insert; the first insert is disposed at the lower end of the insulating material; the second insert is disposed at the upper end of the insulating material;

[0006] The second insert has an upward-opening mounting groove in the middle. A transmission slot seat with an upward-opening groove is fixed in the bottom of the mounting groove. A bidirectional threaded rod is horizontally rotatably mounted in the groove of the transmission slot seat. Adjusting plates are threadedly connected to the left and right parts of the bidirectional threaded rod. The two adjusting plates have threaded structures on their opposite end faces. A drive wheel is wrapped around the middle section of the bidirectional threaded rod.

[0007] Furthermore, to improve the firmness of the threaded connection, the top of the adjusting plate extends vertically to be flush with the opening of the mounting groove.

[0008] Furthermore, in order to enable the adjusting plate to slide horizontally, the inner wall of the transmission groove seat is provided with a slide rail that restricts the rotation of the adjusting plate.

[0009] Furthermore, in order to perform threaded transmission, the bottom of the adjusting plate is provided with an internal threaded hole corresponding to the bidirectional threaded rod.

[0010] Furthermore, in order to improve the insulation effect, the insulating material is columnar epoxy resin, and its outer wall is provided with several umbrella-shaped structures from top to bottom.

[0011] Furthermore, to facilitate pulling, the first insert is a long column with its top fixedly embedded in the center of the lower end of the insulator.

[0012] Furthermore, in order to connect with the energized part of the main circuit of the circuit breaker, the second insert is a cylindrical cup structure. The second insert is fixedly embedded in the upper end of the insulator, and its top surface is flush with the top surface of the insulator.

[0013] Furthermore, in order to form a rod-shaped structure as a whole, the insulator, the first insert, and the second insert are coaxially arranged.

[0014] Furthermore, in order to perform rotational positioning, the transmission slot seat is specifically a cylindrical structure with a central slot, and bearings for rotating and positioning the left and right ends of the bidirectional threaded rod are respectively provided on both sides of the inner wall of the slot.

[0015] The beneficial effects of this utility model are: the metal insert on the insulating rod that connects to the live part of the main circuit of the circuit breaker has an adjustment function, which can directly adjust the diameter of the threaded connection, effectively improving the convenience of installation. During adjustment, the drive wheel is rotated by a tool or manually, causing the drive wheel to drive the bidirectional threaded rod to rotate. The bidirectional threaded rod drives the two adjusting plates of the threaded connection to move in opposite directions. When the two adjusting plates move toward the drive wheel, the diameter of the threaded connection is reduced; when the two adjusting plates move away from the drive wheel, the diameter of the threaded connection is increased. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the structure of an insulating tie rod that is easy to install according to this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of an insulating tie rod that is easy to install according to this utility model;

[0019] Figure 3 This is a schematic diagram of the adjustment plate.

[0020] In the diagram: Insulator-1, First Insert-2, Second Insert-3, Mounting Slot-31, Transmission Slot Seat-32, Bidirectional Threaded Rod-33, Adjusting Plate-34, Drive Wheel-35 Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments. Example 1

[0022] Please see Figure 1 , Figure 2 , Figure 3 This utility model provides an easy-to-install insulating pull rod technical solution: its structure includes an insulating material 1, a first insert 2, and a second insert 3; the first insert 2 is disposed at the lower end of the insulating material 1; the second insert 3 is disposed at the upper end of the insulating material 1;

[0023] like Figure 2 , 3 As shown, the second insert 3 has an upward-opening mounting groove 31 in the middle. A transmission slot seat 32 with an upward-opening groove is fixed in the bottom of the mounting groove 31. A bidirectional threaded rod 33 is horizontally rotatably provided in the groove of the transmission slot seat 32. Adjusting pieces 34 are threadedly connected to the left and right parts of the bidirectional threaded rod 33 respectively. The two adjusting pieces 34 have a threaded structure on their opposite end faces. A drive wheel 35 is wrapped around the middle section of the bidirectional threaded rod 33. The outer wall of the drive wheel 35 has anti-slip texture to facilitate user operation.

[0024] Specifically, the bidirectional threaded rod 33 is a rod-shaped structure with two threaded sections of opposite directions on the left and right sides. During rotation, the threads simultaneously drive the two adjusting plates 34 to move in opposite directions.

[0025] To improve the firmness of the threaded connection, the top of the adjusting piece 34 extends vertically to be flush with the opening of the mounting groove 31, and the upper middle part of the two adjusting pieces 34 is used for threaded connection with the live parts of the main circuit of the circuit breaker.

[0026] In order to allow the adjusting plate 34 to slide horizontally, the inner wall of the transmission groove seat 32 is provided with a slide rail that restricts the rotation of the adjusting plate 34.

[0027] In order to perform threaded transmission, the bottom of the adjusting plate 34 is provided with an internal threaded hole corresponding to the bidirectional threaded rod 33.

[0028] To facilitate pulling, the first insert 2 is a long column, with its top fixedly embedded in the center of the lower end of the insulator 1.

[0029] In order to connect with the live parts of the main circuit of the circuit breaker, the second insert 3 is a straight cylindrical cup structure. The second insert 3 is fixedly embedded in the upper end of the insulator 1, and its top surface is flush with the top surface of the insulator 1.

[0030] In order to form a rod-shaped structure as a whole, the insulator 1, the first insert 2, and the second insert 3 are coaxially arranged.

[0031] For rotational positioning, the transmission slot seat 32 is specifically a cylindrical structure with a central slot, and bearings for rotational positioning of the left and right ends of the bidirectional threaded rod 33 are respectively provided on both sides of the inner wall of the slot.

[0032] Principle: The metal insert on the insulating rod that connects to the live parts of the main circuit of the circuit breaker has an adjustment function, which can directly adjust the diameter of the threaded connection. During adjustment, the drive wheel 35 is rotated by a tool or manually, causing the drive wheel 35 to drive the bidirectional threaded rod 33 to rotate. The bidirectional threaded rod 33 drives the two adjusting plates 34 of the threaded connection to move in opposite directions. When the two adjusting plates 34 move toward the drive wheel 35, the diameter of the threaded connection is reduced. When the two adjusting plates 34 move away from the drive wheel 35, the diameter of the threaded connection is increased. During installation, the threaded structures on the two adjusting plates 34 cooperate with each other to fix the live parts of the main circuit of the circuit breaker. Example 2

[0033] For the sake of brevity, the parts that are the same as those in other embodiments will not be described again. The main focus here is on the structure that is different from other embodiments of this utility model. In order to improve the insulation effect, the insulating material 1 described in this application is a columnar epoxy resin, and its outer wall is provided with a number of umbrella skirt structures from top to bottom.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An insulated pull rod for facilitating installation, characterized by: Its structure includes an insulator (1); The first insert (2) is disposed at the lower end of the insulator (1); The second insert (3) is disposed on the upper end of the insulator (1); The second insert (3) has an upward-facing mounting groove (31) in the middle. A transmission slot seat (32) with an upward-facing slot is fixed in the bottom of the mounting groove (31). A bidirectional threaded rod (33) is horizontally rotatably provided in the slot of the transmission slot seat (32). Adjusting plates (34) are threadedly connected to the left and right sides of the bidirectional threaded rod (33). The two adjusting plates (34) have threaded structures on their opposite end faces. A drive wheel (35) is wrapped around the middle section of the bidirectional threaded rod (33).

2. An insulated pull rod for easy installation according to claim 1, characterized in that: The top of the adjustment piece (34) extends vertically to be flush with the opening of the mounting groove (31).

3. An insulated pull rod for easy installation according to claim 1, characterized in that: The inner wall of the transmission slot (32) is provided with a slide rail that limits the rotation of the adjustment plate (34).

4. An insulated pull rod for easy installation according to claim 3, characterized in that: The bottom of the adjusting plate (34) is provided with an internal thread hole corresponding to the bidirectional threaded rod (33).

5. The insulated pull rod of claim 1, wherein: The insulating material (1) is a columnar epoxy resin, and its outer wall is provided with several umbrella-shaped structures from top to bottom.

6. The insulated pull rod of claim 1, wherein: The first insert (2) is a long column, and its top is fixedly embedded in the center of the lower end of the insulator (1).

7. The insulated pull rod of claim 1, wherein: The second insert (3) is a cylindrical cup structure. The second insert (3) is fixedly embedded in the upper end of the insulator (1), and its top surface is flush with the top surface of the insulator (1).

8. The insulated pull rod of claim 1, wherein: The insulator (1), the first insert (2), and the second insert (3) are coaxially arranged.

9. The insulated pull rod of claim 1, wherein: The transmission slot seat (32) is specifically a cylindrical structure with a central slot, and bearings for rotating and positioning the left and right ends of the bidirectional threaded rod (33) are respectively provided on both sides of the inner wall of the slot.

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