Column switch adjusting tool

Abstract

The utility model provides a column switch adjusting tool. The column switch adjusting tool comprises a bolt screwing mechanism and a nut screwing mechanism. The bolt screwing mechanism comprises a bolt screwing main body, one end of the bolt screwing main body is provided with a bolt matching part, and the bolt matching part can be matched with an adjusting bolt of the column switch to limit or drive the adjusting bolt to rotate; the nut screwing mechanism comprises a nut screwing main body, the nut screwing main body is of a sleeve structure, one end of the nut screwing main body is provided with a nut matching part, and the nut matching part can be matched with a fastening nut of the column switch to drive the fastening nut to be screwed; the bolt matching part can extend into the nut screwing main body, and when the bolt matching part is located in the nut screwing main body, the bolt screwing main body can rotate relative to the nut screwing main body, and a part of the bolt screwing mechanism is located outside the nut screwing main body. When the adjusting tool is used for adjusting the over travel of the pole-mounted switch, the over travel of the pole-mounted switch after adjustment can be ensured to be within a reasonable range, and the mechanical performance of the pole-mounted switch is stable.

Description

Technical Field

[0001] The present application relates to the technical field of pole-mounted switches, and in particular to a pole-mounted switch adjustment tool. Background Art

[0002] Pole switches are widely used in power distribution systems. Pole switches mainly include three types: pole circuit breakers, pole load switches, and pole isolating switches. Among them, pole circuit breakers are mainly used for segmented switching, control, and protection of distribution line sections, and can open and close short-circuit currents. Pole load switches have the ability to carry and open and close rated currents, and are mainly used for line segmentation and fault isolation. Pole isolating switches have obvious breaks in the open state, and are mainly used to isolate circuits.

[0003] Figure 1 This is a top view of a typical pole-mounted switch. Figure 1 As shown, the pole switch includes an insulating rod assembly 01. When the pole switch is opened, the insulating rod assembly 01 moves upward under the action of the opening spring (i.e. Figure 1 When the pole switch is closed, the insulating rod assembly 01 moves downward under the action of the closing spring (i.e. Figure 1 Move inward vertically on the paper surface) to make the moving and static contacts of the vacuum interrupter contact.

[0004] Figure 2 for Figure 1 Front view of the center insulating tie rod assembly. Figure 3 for Figure 2 An enlarged view of the insulating pull rod assembly. Figure 3 As shown, the insulating pull rod assembly 01 includes an insulating pull rod 011, an overtravel spring 012, an overtravel spring cover 013, a cylindrical pin 014, a fastening nut 015, an adjusting bolt 016 and a pull rod sleeve 017. Among them, the overtravel spring 012 is sleeved outside the upper end shaft of the insulating pull rod 011. The overtravel spring cover 013 is sleeved outside the upper end shaft of the insulating pull rod 011 and contacts the upper end of the overtravel spring 012. The pull rod sleeve 017 is sleeved outside the upper end shaft of the insulating pull rod 011 and contacts the upper end surface of the overtravel spring cover 013. The pull rod sleeve 017 and the overtravel spring cover 013 play the role of limiting the overtravel spring 012. The pull rod sleeve 017 and the insulating pull rod 011 are both provided with transverse holes. During assembly, the pressure of the press is used to align the transverse holes of the two, and the cylindrical pin 014 is inserted into the transverse holes of the two. The lower end of the adjusting bolt 016 is connected to the threaded hole at the upper end of the pull rod sleeve 017, and the fastening nut 015 is threadedly connected with the adjusting bolt 016. The lower end surface of the fastening nut 015 abuts against the upper end surface of the pull rod sleeve 017, playing the role of locking the adjusting bolt 016.

[0005] During the assembly of the pole switch, the overtravel needs to be adjusted. Overtravel refers to the distance that the moving contact or the static contact can move after the switch is closed. In other words, after the moving and static contacts are in contact, if the static contact is withdrawn, the distance that the moving contact can move is the overtravel. If the overtravel is too small, the contact will not close normally after wear. If the overtravel is too large, it will require a large closing power to close the switch, making the closing extremely unreliable.

[0006] The overtravel adjustment process of the column switch is: when the overtravel is small, first loosen the fastening nut 015, then rotate the adjusting bolt 016 to move the adjusting bolt 016 downward and screw it more into the upper threaded hole of the pull rod sleeve 017. After measuring the overtravel to meet the requirements, keep the adjusting bolt 016 stationary and tighten the fastening nut 015 until the lower end face of the fastening nut 015 abuts against the upper end face of the pull rod sleeve 017. When the overtravel is large, first loosen the fastening nut 015, then rotate the adjusting bolt 016 in the opposite direction to move the adjusting bolt 016 upward and screw it less into the upper threaded hole of the pull rod sleeve 017. After measuring the overtravel to meet the requirements, keep the adjusting bolt 016 stationary and tighten the fastening nut 015 until the lower end face of the fastening nut 015 abuts against the upper end face of the pull rod sleeve 017.

[0007] At present, after the pole-mounted switch has actually adjusted the overtravel, the overtravel is sometimes still too large or too small. Moreover, the mechanical properties of the pole-mounted switch are sometimes unstable. How to avoid these two situations is a technical problem that urgently needs to be solved by technical personnel in this field. Utility Model Content

[0008] In order to solve the above problems, the present application provides a column switch adjustment tool, the column switch adjustment tool comprising:

[0009] A bolt screwing mechanism, the bolt screwing mechanism comprising a bolt screwing body, one end of the bolt screwing body being provided with a bolt fitting portion, the bolt fitting portion being capable of fitting with an adjusting bolt of a column switch to limit or drive the adjusting bolt to rotate;

[0010] A nut screwing mechanism, wherein the nut screwing mechanism comprises a nut screwing body, the nut screwing body is a sleeve structure, one end of the nut screwing body is provided with a nut mating portion, the nut mating portion can be mated with a fastening nut of a column switch to drive the fastening nut to be tightened;

[0011] The bolt fitting portion can extend into the interior of the nut screwing body. When the bolt fitting portion is located inside the nut screwing body, the bolt screwing body can rotate relative to the nut screwing body and a part of the bolt screwing mechanism is located outside the nut screwing body.

[0012] In one implementation manner of the column switch adjustment tool, the bolt matching portion is a non-circular protrusion structure that matches with the non-circular groove on the head end surface of the adjustment bolt.

[0013] In one implementation of the column switch adjustment tool, the nut mating portion is a non-circular hole-shaped structure that matches with the non-circular outer side surface of the fastening nut.

[0014] In one implementation of the column switch adjustment tool, the non-circular hole structure is integrally arranged on or fixedly connected to or unidirectionally rotatably connected to one end of the nut screwing body through a ratchet structure.

[0015] An implementation manner of a column switch adjustment tool, wherein the bolt tightening mechanism includes a bolt tightening handle, and the bolt tightening handle is connected to the bolt tightening body; the nut tightening mechanism includes a nut tightening handle, and the nut tightening handle is connected to the nut tightening body; when the bolt mating portion is located inside the nut tightening body, the bolt tightening handle and the nut tightening handle are both located outside the nut tightening body.

[0016] An implementation manner of a column switch adjustment tool, the bolt tightening handle and the nut tightening handle are both long strip structures, the length direction of the bolt tightening handle is perpendicular to the length direction of the bolt tightening body, and the length direction of the nut tightening handle is perpendicular to the length direction of the nut tightening body.

[0017] An implementation manner of a column-mounted switch adjustment tool, when the bolt mating portion is located inside the nut tightening body, the bolt tightening body can move along the length direction of the nut tightening body, when the bolt tightening body moves to an extreme position along the length direction of the nut tightening body, the bolt tightening handle abuts against an end face of the nut tightening body away from the nut mating portion, and the bolt mating portion extends from an end of the nut tightening body where the nut mating portion is set.

[0018] In one implementation of the column switch adjustment tool, when the bolt tightening body moves to the limit position along the length direction of the nut tightening body, there is a gap between the bolt tightening handle and the nut tightening handle.

[0019] When using the adjustment tool provided in the present application to adjust the overtravel of the column switch, the nut tightening mechanism tightens the fixing nut while the bolt tightening mechanism fixes the adjusting bolt. The nut tightening mechanism and the bolt tightening mechanism can be used at the same time without interfering with each other, so that the adjusting bolt does not rotate when the fixing nut is tightened and the fixing nut can be tightened in place. Therefore, it can be ensured that the overtravel of the column switch after adjustment is within a reasonable range and the mechanical properties of the column switch are stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A top view of a typical column mounted switch;

[0021] Figure 2 for Figure 1 A front view of the location of the middle insulating tie rod assembly;

[0022] Figure 3 for Figure 2 A magnified view of the middle insulating tie rod assembly;

[0023] Figure 4 A three-dimensional diagram of an embodiment of a column switch adjustment tool provided in the present application;

[0024] Figure 5 for Figure 4 A three-dimensional diagram of the middle bolt tightening mechanism;

[0025] Figure 6 for Figure 4 A three-dimensional perspective view of the middle nut screwing mechanism;

[0026] Figure 7 For use Figure 4 The schematic diagram of the overtravel of the switch on the adjusting column of the adjusting tool is shown;

[0027] The following are the descriptions of the reference numerals:

[0028] 01 insulating pull rod assembly, 011 insulating pull rod, 012 overtravel spring, 013 overtravel spring cover, 014 cylindrical pin, 015 fastening nut, 016 adjusting bolt, 017 pull rod sleeve;

[0029] 1 bolt screwing mechanism, 11 bolt screwing body, 11a bolt matching part, 12 bolt screwing handle, 2 nut screwing mechanism, 21 nut screwing body, 21a nut matching part, 22 nut screwing handle. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] At present, after the pole-mounted switch is actually adjusted to have an overtravel, there is sometimes still a situation where the overtravel is too large or too small, and sometimes there is also a situation where the mechanical performance of the pole-mounted switch is unstable.

[0032] The applicant analyzed and found that the above situation existed because:

[0033] After the overtravel is adjusted to a suitable range, when the existing screwing tool is used to rotate the fastening nut 015, the existing limit tool cannot be used to limit the adjustment bolt 016 from rotating, and the adjustment bolt 016 can only be limited by hand to prevent it from rotating. However, hand support usually cannot ensure that the adjustment bolt 016 does not rotate at all. Once the adjustment bolt 016 rotates, the overtravel will change, which may result in the overtravel being too large or too small after the actual adjustment.

[0034] After the overtravel is adjusted to an appropriate range, when the existing limit tool is used to limit the adjustment bolt 016 from rotating, the existing screwing tool cannot be used to rotate the fastening nut 015, and the fastening nut 015 can only be rotated manually. However, manual rotation usually cannot tighten the fastening nut 015 into place. If the fastening nut 015 is not tightened into place, the adjusting bolt 016 will become loose, which may cause the stroke of the insulating pull rod assembly to change when closing and opening the switch, thereby causing the mechanical performance of the pole-mounted switch to be unstable.

[0035] That is to say, the above situation is caused by the lack of a suitable adjustment tool. Therefore, the present application provides a column switch adjustment tool. During the process of adjusting the column switch overtravel, the adjustment tool can be used to tighten the fixing nut 015, and the adjustment tool can also be used to limit the rotation of the adjustment bolt 016 and drive the adjustment bolt 016 to rotate.

[0036] like Figure 4 As shown, the column switch adjustment tool provided in the present application includes a bolt tightening mechanism 1 and a nut tightening mechanism 2.

[0037] like Figure 5 As shown, the bolt tightening mechanism 1 includes a bolt tightening body 11. A bolt fitting portion 11a is provided at one end of the bolt tightening body 11. The bolt fitting portion 11a can be matched with the adjusting bolt 016 of the column switch to limit the rotation of the adjusting bolt 016 and drive the adjusting bolt 016 to rotate. In other words, when the bolt fitting portion 11a is matched with the adjusting bolt 016 of the column switch, the bolt fitting portion 11a can limit the adjusting bolt 016 when it does not rotate, so that the adjusting bolt 016 cannot rotate, and when the bolt fitting portion 11a rotates, it can drive the adjusting bolt 016 of the column switch to rotate.

[0038] like Figure 6 As shown, the nut screwing mechanism 2 includes a nut screwing body 21. The nut screwing body 21 is a sleeve structure. A nut fitting portion 21a is provided at one end of the nut screwing body 21. The nut fitting portion 21a can be matched with the fastening nut 015 of the column switch to drive the fastening nut 015 to be tightened. In other words, when the nut fitting portion 21a is matched with the fastening nut 015 of the column switch, the nut fitting portion 21a can drive the fastening nut 015 of the column switch to be tightened when rotating in one direction.

[0039] The bolt fitting portion 11 a can extend into the nut screwing body 21 . When the bolt fitting portion 11 a is located inside the nut screwing body 21 , the bolt screwing body 11 can rotate relative to the nut screwing body 21 and a part of the bolt screwing mechanism 1 is located outside the nut screwing body 21 .

[0040] like Figure 7 As shown, the process of adjusting the overtravel of the switch on the column using the above-mentioned adjustment tool can be:

[0041] Loosen the fastening nut 015 of the column switch, let the bolt matching part 11a match with the adjusting bolt 016 of the column switch, let the nut matching part 21a match with the fastening nut 015 of the column switch, after matching, the bolt matching part 11a is located inside the nut screwing body 21;

[0042] Then, the operator applies force to the portion of the bolt tightening mechanism 1 located outside the nut tightening body 21, so that the bolt fitting portion 11a rotates, driving the adjusting bolt 016 to rotate, and realizing over-travel adjustment;

[0043] After measuring the overtravel and finding that it meets the requirements, the operator applies force to the portion of the bolt tightening mechanism 1 located outside the nut tightening body 21 to fix the bolt mating portion 11a, and then the operator applies force to the nut tightening mechanism 2 to rotate the nut mating portion 21a in one direction to tighten the fastening nut 015 until the fastening nut 015 abuts against the upper end surface of the pull rod sleeve 017.

[0044] From the above description, it can be seen that in the process of using the above-mentioned adjustment tool to adjust the overtravel of the column switch, the nut tightening mechanism 2 tightens the fastening nut 015 while the bolt tightening mechanism 1 fixes the adjusting bolt 016. The nut tightening mechanism 2 and the bolt tightening mechanism 1 can be used at the same time without interfering with each other, so that when the fastening nut 015 is tightened, the adjusting bolt 016 does not rotate and the fastening nut 015 can be tightened in place. Therefore, it can be ensured that the overtravel of the column switch after adjustment is within a reasonable range and the mechanical properties of the column switch are stable.

[0045] Specifically, the bolt matching portion 11a may be a non-circular groove ( Figure 7 For example, when the groove on the head end face of the adjusting bolt 016 is a straight groove, the protruding structure is set to a straight shape; when the groove on the head end face of the adjusting bolt 016 is a cross groove, the protruding structure is set to a cross shape.

[0046] Alternatively, the bolt mating portion 11a may be a non-circular hole structure that cooperates with the non-circular outer side surface of the adjusting bolt 016. For example, when the outer side surface of the adjusting bolt 016 is a hexagonal surface, the hole structure is a hexagonal hole structure; when the outer side surface of the adjusting bolt 016 is an elliptical surface, the hole structure is an elliptical hole structure.

[0047] In short, the structure of the bolt fitting part 11a can be flexibly designed according to needs, as long as it is ensured that "when the nut fitting part 21a is in the fitting state with the adjusting bolt 016 of the column switch, the bolt fitting part 11a can limit the adjusting bolt 016 of the column switch when it is not rotating, so that the adjusting bolt 016 of the column switch cannot rotate, and when the bolt fitting part 11a rotates, it can drive the adjusting bolt 016 of the column switch to rotate."

[0048] Specifically, the nut mating portion 21a can be a non-circular hole structure that cooperates with the non-circular outer side surface of the fastening nut 015. For example, when the outer side surface of the fastening nut 015 is a hexagonal surface, the hole structure is a hexagonal hole structure; when the outer side surface of the fastening nut 015 is an elliptical surface, the hole structure is an elliptical hole structure.

[0049] Alternatively, the nut mating portion 21a may also be a latch structure that fits with the pin hole on the end face of the fastening nut 015.

[0050] More specifically, the nut mating portion 21a of the non-circular hole structure can be integrally provided at one end of the nut screwing body 21, or fixedly connected to one end of the nut screwing body 21, or unidirectionally rotatably connected to one end of the nut screwing body 21 through a ratchet structure.

[0051] In short, the structure of the nut fitting part 21a can be flexibly designed according to needs, as long as it is ensured that "when the nut fitting part 21a is in the matching state with the fastening nut 015 of the column switch, the nut fitting part 21a can drive the fastening nut 015 of the column switch to be tightened when it rotates in one direction."

[0052] Further, such as Figure 5 As shown, the bolt tightening mechanism 1 further includes a bolt tightening handle 12, and the bolt tightening handle 12 is connected to the bolt tightening body 11, and the connection method is not limited, for example, it can be integrally formed or assembled and fixed.

[0053] like Figure 6 As shown, the nut screwing mechanism 2 further includes a nut screwing handle 22, which is connected to the nut screwing body 21. The connection method is not limited, for example, it can be integrally formed or assembled and fixed.

[0054] When the bolt fitting portion 11a is located inside the nut screwing body 21, the bolt screwing handle 12 and the nut screwing handle 22 are both located outside the nut screwing body 21. In this way, the operator can apply force to the bolt screwing mechanism 1 and the nut screwing mechanism 2 by holding the bolt screwing handle 12 and the nut screwing handle 22. The bolt screwing handle 12 and the nut screwing handle 22 are preferably designed to be in a shape that is convenient for the operator to hold, such as a long strip, a circular ring, etc.

[0055] In the figure, in order to facilitate the operator's holding and increase the torque to save operating force, the bolt tightening handle 12 and the nut tightening handle 22 are designed to be long strips, and the length direction of the bolt tightening handle 12 is perpendicular to the length direction of the bolt tightening body 11, and the length direction of the nut tightening handle 22 is perpendicular to the length direction of the nut tightening body 21.

[0056] Specifically, when the bolt fitting portion 11 a is located inside the nut tightening body 21 , the bolt tightening body 11 can move along the length direction of the nut tightening body 21 .

[0057] like Figure 4 As shown, when the bolt screwing body 11 moves to an extreme position along the length direction of the nut screwing body 21, the bolt screwing handle 12 and the end surface of the nut screwing body 21 away from the nut mating portion 21a ( Figure 4 The bolt engaging portion 11a is abutted against the upper end face of the nut screwing body 21 indicated by B in the figure, and the bolt engaging portion 11a extends out from one end of the nut screwing body 21 where the nut engaging portion 21a is provided (the lower end of the nut screwing body 21 in the figure). In this way, when the bolt engaging portion 11a is engaged with the adjusting bolt 016, the bolt engaging portion 11a can be extended out of the nut screwing body 21, so that the bolt engaging portion 11a can be visually seen, so that the engagement of the bolt engaging portion 11a with the adjusting bolt 016 can be completed more accurately and quickly.

[0058] Specifically, when the bolt screwing body 11 moves to the above-mentioned limit position along the length direction of the nut screwing body 21, there is a gap between the bolt screwing handle 12 and the nut screwing handle 22. In this way, the bolt screwing handle 12 and the nut screwing handle 22 can prevent the operator from being pinched, thereby improving the safety of operation.

[0059] The above specific examples are used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A column switch adjustment tool, characterized in that: The column switch adjustment tooling comprises: A bolt tightening mechanism (1), the bolt tightening mechanism (1) comprising a bolt tightening body (11), one end of the bolt tightening body (11) being provided with a bolt fitting portion (11a), the bolt fitting portion (11a) being capable of fitting with an adjusting bolt (016) of a column switch to limit or drive the adjusting bolt (016) to rotate; A nut screwing mechanism (2), the nut screwing mechanism (2) comprising a nut screwing body (21), the nut screwing body (21) being a sleeve structure, one end of the nut screwing body (21) being provided with a nut mating portion (21a), the nut mating portion (21a) being capable of mating with a fastening nut (015) of a column switch to drive the fastening nut (015) to be tightened; The bolt fitting portion (11a) can extend into the interior of the nut screwing body (21); when the bolt fitting portion (11a) is located inside the nut screwing body (21), the bolt screwing body (11) can rotate relative to the nut screwing body (21) and a portion of the bolt screwing mechanism (1) is located outside the nut screwing body (21).

2. The column switch adjustment tool according to claim 1, characterized in that: The bolt matching portion (11a) is a non-circular protruding structure that matches with a non-circular groove on the head end surface of the adjusting bolt (016).

3. The column switch adjustment tool according to claim 1, characterized in that: The nut matching portion (21a) is a non-circular hole-shaped structure that matches the non-circular outer side surface of the fastening nut (015).

4. The column switch adjustment tool according to claim 3, characterized in that: The non-circular hole-shaped structure is integrally arranged on or fixedly connected to or unidirectionally rotatably connected to one end of the nut screwing body (21) via a ratchet structure.

5. The column switch adjustment tool according to any one of claims 1 to 4, characterized in that: The bolt tightening mechanism (1) comprises a bolt tightening handle (12), the bolt tightening handle (12) being connected to the bolt tightening body (11); the nut tightening mechanism (2) comprises a nut tightening handle (22), the nut tightening handle (22) being connected to the nut tightening body (21); when the bolt mating portion (11a) is located inside the nut tightening body (21), the bolt tightening handle (12) and the nut tightening handle (22) are both located outside the nut tightening body (21).

6. The column switch adjustment tool according to claim 5, characterized in that: The bolt tightening handle (12) and the nut tightening handle (22) are both long strip structures; the length direction of the bolt tightening handle (12) is perpendicular to the length direction of the bolt tightening body (11); and the length direction of the nut tightening handle (22) is perpendicular to the length direction of the nut tightening body (21).

7. The column switch adjustment tool according to claim 6, characterized in that: When the bolt fitting portion (11a) is located inside the nut screwing body (21), the bolt screwing body (11) can move along the length direction of the nut screwing body (21); when the bolt screwing body (11) moves to an extreme position along the length direction of the nut screwing body (21), the bolt screwing handle (12) abuts against an end surface of the nut screwing body (21) away from the nut fitting portion (21a), and the bolt fitting portion (11a) extends from an end of the nut screwing body (21) where the nut fitting portion (21a) is provided.

8. The column switch adjustment tool according to claim 7, characterized in that: When the bolt screwing body (11) moves to the limit position along the length direction of the nut screwing body (21), a gap exists between the bolt screwing handle (12) and the nut screwing handle (22).

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